BE621802A - - Google Patents

Description

       

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  The present invention relates to iiachln e 4 t, b, 1- quet, ¯blaae. and elements * of this gwohino trtea which back hermetically sealed packages * containing * of * food or other products .... t1'r .. suitable ptuvèni be formed continuously and self-mutually Plu * PArt1lul1 "" ment # 1 The invention is especially concerned with a new and improved apparatus suitable for the automatic and automatic forming of packaging from polychloride film 40,. tn, .U, d'n1 'while making a packaging. advantageous use of $ property * of eur-refrigeration or surplus only * if their totnft of such film.



  Polyvinf1ldin chloride tila. In the 8ur-r state, rrll1ér 'is formed from a copolymer of vinyl chloride and v1ny114'n chloride, the film being extruded .or. for a*
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 with a * tumbler and immediately cooled for example,
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 by ttiquing to advance and spin 1 through a water ball Maintained at a temperature of tnynron 58 * F. Simply as 4o ... pl., The film or film can be oonvo- nablèment had by passing it in the bath d <* M dan. the inter-. & 11. of 0.1 AJ # O seconds following its formation by ttruKiont and the time during which the excavation passes * 4 spans The bath ranging from 1 to seconds * The film of polyvinyl chloride in the state <u <0 '<ffif <rest A80rph. until and one. combination of time and water temperature condition. ' 1. crystallized.

   A substantial extension (of the chloride film of

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 refrigerated polyYlny11dàne also results in a cr18ttL '..'-
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 action, the crystals formed 'both at least substantially orient.
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 While this film is maintained in its managed ar-refri state without any appreciable crystallization occurring, the
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 film can be sealed by reattaching it to itself simply by contact and without the need to apply
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 heat to wrap to mow it.

   Thus, a con naked pair of sheets of polyv1nY11dnl our-r4frigér5t. Polyv1nY11dnl c4lovurt., May receive accumulations of product eapt-ceea from each other at the bottom of the foil # rdetOnO and the skin regions; which surrounds; these * being 3UC (: tH, being locked up by ooyono eônfortteur * .. matrix (. (O, JJ, moving and moving, continuously which 4V during their operation in 40 vice conditions will control will cause> .. contact automatic sntro the r6.1Qn .. ".-. 11 ... do the film to enclose aoMpleMwnt the * accumulations of Il- duite and automatically form <J s self-contained packages The * packages formed in this way remain spaced throughout adjoining pellteillos OQ..b "'. 1 and move continuously ot the film t $ tt Then eriata.Mitee to an extent suitable for V41" ".

   at least #tnsibltment the properties of and of this film after
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 what the packaging. individual sheets are automatically separated from the sheets *
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 The films (nI polyvinylidene chloride films used in the described packaging opôrat-ion c1-d80IUI- may have varying compositions depending on the particular packaging properties that are known to them. ? - - Perpoaeaeous layers of polyvinylidene chloride peUieulo'P can be prepared in a continuous fashion by forint of the separate films and by continuously combining them with a \ ri \ t.r1t.

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 the function do 1 f afcalliije Uno .f''i? ('; LF t4A f ..' Yj.r 1 "" ,, a "R rie j oly- V'I7lrli.iifi9 constituunt barrier aa! Rc; .. :: e rplit Pti, fr'n4e &. Par- tir dlelviron C, 10, '* d chlorupp from vlaylid $ n.

    10 of ylnylchloride while a VII film; rsantu * un; ', r3nd de-rl de sou- "Ilf-c'me 4-o.-z otre foT'n {1,, Irtir d'nvrcn 60 $ A * rhloride" 3 vi- nyidt <' ' <* tt '? .- do el.11irtire fixes v, 4nlleb. 'hmra <ret (1-Aix tyros diff-' ror * # I X ', iel7.nrs catr, M;: f-rt ill, e .3etile i, "E1! ti, ïl e; ,, su. fer | o * 8 | the individual f'3r <tn r;! rrr c cover to form u, n y-bail 'i * 6 fjul r'nnt: IA .flax, i39'i.iG v-'ilm: for ni3niter 14 proteettofl ':?. y "8 of fJf .-? rlor" 4; Liinfl ilr.

   G'c? Tt, ''! de tF: ll.rl'1..C1 "" tlriri.i f, 4Anel u * l'i '<; M': tbJHt4 l'oxyn * renui # for w.ixm life frolnftjo! t l''Hit atr "n = 'dom jurofinl'ift' # 'lttn #' rst> oirBB, we start from prif)" '? -': H cnnstituany d H rër5nm, In addition , h titra rf r, txrsrng 1 BPulenetjt # un 1 u. c ') r'iuant bt rrfHf oxy | è- cannot fttru faith'ine - "vec' nf p <îi r * ur about '' ', '00 :! nu; n,' while littlint p <jïHpu1 e '! up'! ') x i'.1: nwolf un "fp <# ûHnylrnt), 0 # 003 uu4 tiu T.Uc'a.d h1 t") d p'yvinyHd & cannot title s; t'a m ujrfosHin vr d '.' tttpt! ") hair J yes # | t '* flontfint dort c / irnéft>' rifijr.1ni ** d '! <ip ")., t <'! t dif # fpwm.iB and p- tocton from i-rndijttm oomn.d 1 ci rr, '7 rü. Says diîoride of,',) 'Iyvinvl e and If x c. I ta'n dtvcfçtllto de n7.yYgti "'.

   Ilivermen combinfiaoa df!. <Uf: '' '! F! 1, ptit'ent 4tr-e prittto en tl: il1 ^ rctrtG le% Gnrnr ,, "r G9 nr + of ficallfnenfc ri '! .N {f'Tl''cu1.' Dm ohlorur of 1 .-) Iyvin>, Iiiiùne di9ri1 fl'in t. Rurfrfï1 !!! " {'- "Jtp frm * p lo bchIw 1 * ##" #. > ot * dp n''la.'Krtrf9 1.0 r.-t-e df, de ') <fib:' n8 if.r. iltlirrk "çttirt.w 114 -9; rO do scf-Hp '-' * 1 f'r '' ', fJnf.l.' 'tat) <'" '' '"p'! nt end Ili (the r9nrza de "'tyvyHda, In' Dae pu c? nWt flfs nitan t4rr% i.r'nl.rrr do renillft nn '<uj [' 9t''poal, -, ^ tif, la 'f't.Uc'do , fli *, -,> ir of a f.iduj, will give Itou jC) m split joint our <nlnu r'h'p't).

   Co joint | fl>! ït <* t '.' içotilreiant pni, In do la gj, 'iart.a ot en fnlt,

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 100 J1Ítrt1f1 \ fI d)) 1'1: 11 (1111.8 qu * M'lt4t Vflnt) M 0 On 00-It 0 Ct fi 'fuse um nifimlire $ 11 * tW (fjU. Fnt'! 'IIlIInt a mitnir4 meme .. mr.! jrnfmt da-% 1 \ .. ('1I \ tilr8 Il''I'U' cliatiffer de ", '\ nU :!". e' '' mwbnd4 <la r 1.! ic '! l tiiiiiii Mn ") nftiqure tfll11.tI Itis la crtH * 'tglllntit4illi imit J'f! fUt' 1 \., 1nll r.a'J'tt" 1'I .. "'' '.nt, He On rIL 'Iu1 .... te la formation' ifun jtljnt htJ'l! \ Ltl (tl '"1.'. 1 'we can remiz lem rt.1 () nl! Tif 1'011 iClJtu du 8C'fIIU '' 'Uf'nt tel le t? <- 4 la fi-on d | 5nlfevc ""> nts' j'un <* po "Ut l.n'!! Jrf>:> ri H4 IJatt:

  1cmlnrea dfll types do, pelHculei1 described * ci "d''s '!' T <! Are particularly suitable 4 Iteelble) i in a self-working emballare-forming apparatus
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 rtIfjt1ue and! 'Jt'lntinl1e ..



  The following invention has been revised to provide an MtbUage forming apparatus for use with the reloading of PQly \ t1nylidèn chloride in its 4tAt or * réfrisr4l comprising avg. trainers z. matrix which include slaps of '! 1R':. rice ooet- J'14rEJnte Pt df's means carriers to move these plates so as to let them associate ten '! lI, rl1:!. re (' / \ ent fI "J ' .1'f 'training c: i'emb911ng:

  e and 4 1pq s4j> ± jrer then, at least one of the motor ilaf'l.1fas, or matrix plates having a part 1. cavity * d
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 matrix to receive the product, means to provide a
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 first film L this plate-raatrled by covering el1e1 in, the part & here-quickly *, means to put us empty \ 9 prenièrw plate matr1 ('Iq can gtre actionnât compared 4 this VIA that d latrie'! to seal p4rirl , -. Ariquent the first
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 first film against the first plate and attract this film,
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 (1Mtral''T \ ent in the cavity part, moreover, means * for
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 provide a second film on the other die plate to
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 be utUiasini.

     the formation of a package enclosing a product when 1 * ":!, ltll"! t (llfl ... matr "tc9 's: mt fines ln, 888001 ... ation clean to close a package, and seconda means < 1., dis- vacuum of the druyl?: E pl; q'Je..r, -. ", Tr1ce act1 <.1r..nablea with cha" eur.e-Jes plate E.tJ "ic"! ! pnd! jnt their association to close a. 4 fi-jon packaging to attract dandruff parts

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 'dd pu la plates 1111 a diapoaition A oéol% tittg4 1' Ii'11 "'t11 1. produced The invention tara dteyitw A lend a If' pfl'l 'nue dtttinr <mH <M6 << 4mi which 9 # Figure & there r lu HIll forât a hundred o ... 'il' '' '' view 60 side elevation of 1 * thing * A formation of '' 'ba11a. " according to the loan * inventions some party "being matâtes Ibh, ..,:

  L4ulment to% certain other p & rt.1 being nr "1 broken or cut. The left party in figure 18 being
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 a continuation of the right-wing parties of Itaurl 1A 00 ...
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 we see her-
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 - Figure 2 is a * side elevational view of the bottom homeland plate with the empty mud potto il * rdEli constituting a part of the I \ I.ch1ril and located in the gaucho part of the figure lA.



  .. laughing. 3 * and a view in planfragwtntéi of the niar station $ or * empty of the atxioi plate of the bottom toms we see it on line 3 <* 3 t there figure 2.



  #laughing. 4 * tt a * trrrtrr tr * cut; wrdir of the dick post $ or empty of the pirgur brio * Inside * as on the 8Oat. of one. generally following line 4-4 of the
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 figure
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 to Figure * v5 is a * view "in the table. 1 Figure 2 80repro input from tonotlonnomnt to the poet's room from the * empty end of the plate ... very. int't1'ut ,,, .. Figure 6 is a cut '..a8..rea.1, ".t & Ddt. of a <plate .. 'r1c. from the bottom and 4-'1 '.. nt. assets of the vacuum mitt station # this view being given * generally in line 6 * 6 of figure 5.



  - 'is a fragmented plan view of a lower u4trice plate showing the operation of a. valve der co8llUd. do void who we conUt you. a party, this view being

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 taken generally along line 7-7 of figure 4,
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   Figure 8 * and a fragmented p; gn vw & S8rd1e of a. part of the forming machine 1 * packing showing cer-
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 some active aspects * of these elements having the formation of
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 packaging, this view being taken generally along 1 line S-8 of Figure Ut 0 Figure 9 have a transverse section * fragmented of 4 packaging forming machine at the packing standard station * comra * it is generally seen from after line 9-1 of U figure 1 ..



  - Figure 10 is a * fragmentary view * in side elevation, 4 * part cut away of various elements of the packaging forming machine representing the active cooperation at the so-called packaging forming station $ 0 showing 4 years. , the party * irrita says read figure 1A. m figure It is a cross-section o.ï'mdiA, teament4es of an embA11 formation matrix .. 't.nQ4 &; considered as entered along line 11-11 Ut in figure 10.



    Figure 10 is an enlarged fragmentary cross-sectional view of a portion of a formation die ct "= a11 ... ter 60 generally considered along line 12-la said the ti44re 100 Figure 13 is a view in per4peettys tr4é "nttè of part 0 & ': 1." do Ruitrlet 41' "11 plate ..trio. from the top.



  ## l'igwrfl 14 reads me view on perspective trN> Ont4o of a part introduced to carry out the setting under vacuum of a matrix plate, m ': Their .. 15 @et une tue fl'lIIQ.ntô8 agyrandit and we left a soup, in side 41'vlt10n * d, wie left from the post of "n '.. assembly of the packaging of the machine according to the present * invention 0 @ P04te being shown in figure Ut
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 Fi "16 is a * fr * fflntée one cut * view of a slope of the packaging removal Itappartil, considered in general terms according to the ItM * X6-16 of figure 15 * z Figure 17 is a transverse * fragmented shots of an array z airart dies of packaging te%, pëo considered * in a general way according to the lianas 3,7 * 1? of figure 15.

   w Figure 10 held out fragmented tromavernale dr lesogouble aatrice dooolèveinont packagings toro4o # considered general tacon '1 1 1Ô 4a la tiorti 150 Figure 19 $ and a fragmented plan view of part of the foMttatf <matrix. e $ doba ,, xr ocont we see it following the lines $ 19 * 19 *! # fm 1A and at the jftgupt 1B.



  Figure 20 have a fragmented OMUpw br4n & vtroalo part * cavity of lH) nM9blt i utrtos forming; ua packaging f <m4 of 14 Figure II # considered generally along liana 2 <! 30 thereof. m Figure 21 is a view on poropootïvo trffltntèe Woodts of a part of the means A cost4u for the removal of $ 014ballgase aart, a part of the station 41 # 9 # you have packaging of the machine, m Figure 2% * and a read in poreptettve 4arudis fraipsentée element @ of separation of packaging which faded part of the mohine and which are located so would end A, right of the figurw 18, Figure 23 * and 4n view in psfepwstivw of a plate;

  , sorts from the bottom mod4t% doo fropre A otre Used do = @ a 1- ment of the trainer dtomb41, agoo following} the prent * tnventteat "'Ftgm'0 24 and a View erable In figure 23 representing some aspects of the operation plate

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 Mtriew tMdifiwe. Figure 25 is a fragmentary sectional view of part of the 04trtet plate generally taken along line 25-8 $ of Figure 24.



  .. Figure 26 this a perspective view of p1lqu.a 8 & tr: l.a. top and bottom flaoperanfc, a. design aediif! ## * the plate. bottom matrix 2-25 part of the <pMebi <
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 represented*
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 M f'M 27 is a view ... tllabl1 at the ti, ut. ,, 6 mais a, an 'the part of a * base plate of the bottom aatri plate of Ilenatouts removed # ## Figure 2d shows a perspective view of the modified top die plate of Inltmb1. of Figure 26, as Figure 29 * and a view ## ablablable at frame 20 but having the cavity plate 16mn removed * from the top matrix plate to show some of its part1cul .. ritla.



  00 ... ï '<pt * << e'tnt4 schematically in Figures 1A and lot the MtehiRt formatric. The present packaging includes a rïrl, dirporir as both fine conveyor, of Pl * - as $ do matrix from below 10 which are connected * aorwnrhlran to endless belts or chains 11 which run around the right of road chain ospaod * 4 12 including one. is suitably driven by a motor not shown. The conveyor series both end of plates and catr1 'from below 10 extend over the entire length of the machine. the pi. eggs being auccao ..



   ur all * lMtgu <m * d <t! Mohint 1 '*;% q <t <uat eueea' a ': .. ment moved in direction c "eF .chsr in po.1tl \' \.
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 upright * left. straight as we see it and turned
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 inverted position. from right to left as seen. 11 Left part of Fig. LA, a continuous sheet 13 over-chilled polyvinylidene film is supplied to the series of en baa matrix plates from a single

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 eonvtnablt not shown, of axtrMioa of PellicUle 0% of Oux- refrigeration of the pollioulo ,, The chloride film'da polivinylidîno * and formed by axtruaion anyway oon, .. 'nabi * well known, the continuous film stirs . ' being directed through a water bath while being $ tttd <$ <by a system of broom or rollers and the pel11cul.

   d4mo its state of continuous stirring * aur-refrigerated *, and d <lj.vr <w ê the continuous series of plaquai matriet de tn low # and directed tur oolltà * oi so as to cover them.



  Sttf each pl * qut of matrix of the bottom 10 retaining the pellioul stirring. of one bottom 13 of man1 '.... one Itre rocots "voettio law element of a Post 14 of crumb * under V1d. dt, the bottom die plate working with each pliquo ..tr1ee of the boa to attract the part of film that covers this matrix plate a sound centra pouf enter dada a partit one cavity totr1c. of packaging and to make
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 this cavity part of the matrix plate prote to receive the load of a product. The continued movement of * die plates
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 10 beyond the niât post empty 14 and translated by the
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 causes a product 15 to be loaded therein on the film 13 which covers the upper surface of the die plate.

   All
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 Suitable product loading device can shoot used -.1. amnifeatent loading. the hand / of the product, can be used as desired * The continued movement of the bottom die plate 10 loads as a result that the product received therein is automatically covered by a search 16 of the top delivered film * so eObtiDu, conet1tu '. of supercooled polyvinylidana chloride. The film 16 is delivered by conveyor 11 shown partially in a product cover arrangement at the location of the packaging station 18 of the machine.

   This post includes a series at
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 endless transport (placed overhang, of 20 matrix plates

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   ? from above which are suitably attached to chains
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 in end 21 or the like which are portion to,

  their turn by road bosses. rotating chains 22. The top Miriez plates 20 move in the direction of the arrows associated with them and are synchronized with operation with the bottom die plates to cooperate.
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 ranting these plates so as to form a fully closed packaging conforming matrix. The top film or wrap 16 is directed so.

   cover the die cavity taos of each die plate 20 of the dee4u * making the initial step of combining 4..0 top and bottom die plates * the top and bottom films 16 and @ are.



    Maintained separate from each other in clean regions
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 receiving the pPd to the matrix plates until a suitable vacuum (and if desired inert gas flushing) of the regions. containing the product is carried out.
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  The separation of the film * and vacuum of the die is achieved by the operation of a rotary valve assembly 23 of known type having a pair of flexible handles 24 and 25 which go to each upper die plate 20.



  Any suitable type of rotary valve assembly * having a plurality of ports connected by flexible tubes * or the like
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 AUX 40 # 04M die plate * can be used to cock the preferred sequence of vacuuming the sort. forming the packaging.
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  AU poisto there of formation of packages, of .liblillag68 containing individual products August formed by the c / bmb1- .... 18 ('1n of die plates 0 000 packaging * being a1tl'. At lt1t.r1, url god margins of continuous film sheets.



  13 and 16 which remain not 1ntorropu'8. A1n.i. several successive idrcballa- 900 and separated from each other * formed when

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 sheets 13 and 16 are combined at the training station
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 18. The top die plates r 0 are removed from their cooperative association as the bottom die plates 10 follow the package forming operation.
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 and IOnt "rD, 01 '' 'on top for Itrf continuously reused. The packages tormd4, encort r011'. together in the combined excavations ** continuously 13 and 16, have been moved continuously by the plates bottom dies 10 through a film crystallization station, part of which is shown in Figure 18.

   This spawning comprises suitable film heating means 26 as well as an infrared light heater assembly which suitably raises the temperature of the combined films 13 and 16 to such an extent that crystallization is sufficiently advanced to overcome in any way. suitable the supercooling properties of the film. While only a top heater assembly has been shown, a bottom assembly placed below the bottom die plate can be used as well.



   In this connection, the film heating station accelerates crystallization to such an extent that the film and the packages formed by it can be easily handled without causing self-melting or sticking.



   From the post of crystallization of the film, the packaging and parts of the film sheets
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 Continues which are arranged around are advanced by the bottom die plates 10 to a station 27 for removing the packaging or cutting the packaging * This station includes a series with endless conveyor placed above the dies
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 28 for removing packages which are cable-bound to yokes or to an endless conveyor 30 running around a wheel.

   , spaced chains 31. The dies 28 to

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 package removal actuated * in the or indicated by the fitchea and cooperatively combine with the bottom die plates successively 10, This going, of the Convenient Knife Moyena * constituting part d <t * Removal 209 separates the individual wrappers of the continuous film strips ** which surround them 13 and 16 # ct "leaves from the surrounding film sheet *. 1 ... .ball "l. te qui et pr4sonte soue forro. 32 'of waste both removed from the outlet with 193 die plate. of. bottom 10 and r.Ct..1111. by one in.8mbl. , suitable drive rollers 33 * Tepara 3 packs fall from 3 die plates from bottom 10 to -¯on.

   qu% l * t and move downwards passing around the rouis à chana tormînatuo, 1 shown * $ on the other hand so that the return don pln <; n 4 4 e = r'II1 "before the machin., in posltlnt) 1, e * tJtIb & 11al "'4 falling from the plaquât of Mêtiefa t>' x which rooked on a transporter as lin 35 which delivered elild. at na post of mist on boot and sending not shown4. your illustrations don t11 "1A and 10 are of a very nature to it generated and aim at '1u1 ... nt. expose 1 ..... p." tl do faii <Ti: l, on tmtnt general of the Rebin. tOrmAtric. packaged, .. and illappar4illait of the first invention, The description which follows will deal specifically with certain new and improved elements of the machine and aspects of their operation.



  The vacuum dae station 14 of the bottom die plates and the various element * and station are shown in detail in Figures 2 <-7. Cororae we see the crumb in figures $ 2 and 5 # each bottom die plate 10 is pivotally attached by an ear 36 which is part of it .. a chain carries; # '* 11 which is suitably driven by roui 1 chI- '11.



  12. The parties * described are duplicated or arranged ** by r \ 1rg as best seen in figure 9 the pair of roust to

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 ehalntt 11 being obtained by an oommua tree and the ears 36 dit, 114uI..aefio .. from the bottom being located along their 0 '"opposite #, Po adant the continuous movement of the die plates 10 from the inverted position at the de84ou4 of the routa to cbai- net 12. up li up around the road to chtin $ a for some won? ' a potittoû dremâdo # the matrix plates are in contact with a see at so 37 by the ihtlrw'd, 1a1 "of a cane aulvaur 36 of type 4- plot tailant 1 & 111:

  1 .. relative to the inner surface of the neighboring die plate a. extrioïtî. La Il referring moaiantanémant to figure 99 loti crown followers I ptuvedt Itrt grouped in pair with the volt of or * 37 A 10 '"at $ in cross section $." 10 e <t ttwnowaMtt ohaqüé' * 4U. The bat mtriet is equipped with a position oomaandl po.1tl ...... active fairway wood. denies it best seen in figures 3 tt 70 each plaqua matliot da bottom 10 is friendly against its counter of a pair of. & '1'. "C" '"40 on which Pelltoule's search of the bottom $ 13 and roqué osau Shown part1aul1'r.m.nt to the figure $ 2 * 9 $ 0 a gone d ... ly1t ', 40 of the plates 8Itr108..t eléteri- du% due a direction which ooo1d. with talla du) MHV < M <nt the sirte due p1 & qu .... 'rJ.oÍ ... finds a mysa dr <for eoépérar avaa the ptiliculop in the form of a banda soul to which * of either 41.

   As can be seen best in Figures 3 and 4 # the pel'ii- oul. from the bottom 13 loroquleils is received so as to cover the aatfiota cavity 40 is a. width proper to be rt9 required of band 41. This band can be drilled from any * ¯t1 .... suitable such as metal and it is introduced * in a suitable tent to Me in the matrix cavity in front of la plaqua de matriob 10. The op4citic function of this band
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 will be described which follows *
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 Its refer to figures 4 and 6, where the bottom die plate 10 is drilled from a bottom plate *

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 -and a plate 43 css plated cavity being fixed coïtvenablement one 1 the other and spaced at the center of one of
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 the other by an intermediate seal 44.

   Joint 44 is. of a
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 type that aera describes and in fact defines an empty z chamber or vacuum region between the bauw plate 42 and the cavity plate 43 The z cavity plate is mutai * 4't.UVlrtur .. vertical 45 and 46 located * just towards. ': u3.t From 1;: otcS. oppo side # 440 shown in t1l \ 1r.1I ut.- 4 The opener 45 is a recess peculiar to Feweveir a tbroch.



  4'.ntrl! N.ment which will be written. and do not aotsgftuniqut. i5 - empty paee or aara 1 empty between the partit * of plate 42 and 43 <The openings 461 '111 ..' I18AO, r4g do not constitute <n! direct eoammnicâticn with the chamber, ide nacairüiJ defined by the joint 44 Maix extending through uhe IIlQ.i'1ot dl joint and coMauniquen with a part of vaxicl pautiage 47 a valve assembly. from eontsaade of vacuum nomaloigarit closed 4d and grooming $ 4b # ntending inwards 50 until a passage 51 directed 'tI'U, ol1, .. n1J which 00¯ \ ln1qo. with the vacuum chlltjl} 'bre defined by 1., joint 44 in the center thereof.



  The interior vacuum chamber is in cOh1lun1cltlon with each *
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 cavity forming a package @ by several small passages 52
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 (see Fig, 6 and 7). These passages are preferably performed every 00: 1.111 on the back of the matrix and in the center of the
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 this one,
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 , La P'lt. wagering. or. vacuum 14 includes a pltqu <5> in the form of care or reciprocating frame which is. fixed on a transverse arm 54 suitably mounted aul a mechanism eoutonu by one of the lateral elements A badre is formed of the longitudinal waiter mounted, between which and moves the aërio) of the die plates of the ban. Plate 53 have .t.bUt .., on arm 54 by an arm eh cross $ 1 including.

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 EMI16.1
 



  1 # 4 ends are suitably attached to the plate.



  The arm 54 is attached to a spring casing member 37 which can slide vertically within the cooperating spring casing member 58 # and the last member being attached to a cross plate 60 which is parallel to the frame member neighbor side 55 * As can be seen the * cough In figure 3 # the transverse plate element 60 is part of a shift carriage * which and moves it forward and green! rear along an axis parallel to the longitudinal axis of the machine for packaging A rear transverse plate 61 is attached to the transverse plate 60 by means of a bar *
 EMI16.2
 transverse 62 A had * opposite ends of the carriage and fitted
 EMI16.3
 a pair of roller * 63 At each end receiving between them the edges eop'c8 of support plates 64 and 65.

   Between the support plates 64 and 65 and the plates tran "lr. & 1e. 60 and 61 and find a pair of discs.% A or * 66 and 67, These discs * are mounted excenteiquomunt on a shaft 60 which can turn who have
 EMI16.4
 suitably driven by the bear = trio of plates $
 EMI16.5
 Mflett from the bottom (not 8Qntr6t) It which is journalled in an element 70 (figure 4) during. plate 6 ,. 140 disc to CAM * 66 bearing close against him ,, a follower of ci = *
 EMI16.6
 in the form of a roller 71 which is part of a device for
 EMI16.7
 rotenuerde spring 57. A spring of oompr .. '1on 72 $ and held capt1t between 3o4 party ,. cooperating elements of restraint.



  57 and S8 and operates in such a way that the wedge '71 is pressed continuously against the surface of the disc A carl' 66, The transverse plate 61 of the pre-softened carriage described is provided with a
 EMI16.8
 pair of protruding arms 73 which carry cam followers
 EMI16.9
 contitude of saleta 74 cooperating with the disk IL cam 67 on
 EMI16.10
 the opposite marginal parts of it.
 EMI16.11
 



  The rotation of the shaft 60 results in the eccentric rotation * of the disks at eue 66 and h7 with the disk 67

 <Desc / Clms Page number 17>

 
 EMI17.1
 by Ilinteroddiaire de * rollers 74. placing the green carriage front and rear following a this' of the formatting machine <Mtteballagt8 Lt disc at eme 67 have conformed to give us 8OUYt.ent alternating longitudinal part1cu11.r ** carriage described * 1 # * cam disc 66 is shaped such that after rotation the cage follower galtt 71 and moved .... rtical'm4lnt "! III" up and down while being 4 & * Iomont moved longi-
 EMI17.2
 
 EMI17.3
 tud1n & l.m.r.t forward and backward. with the carriage on the side of the machine.

   During the movement towards the top of the toast 71 # 10 arm 54 * '<M <tV <! T and the spring 72 is compressed, This spring has for rele to bring back the arm y.rt1cal..at towards Io low for s fit the corn configuration of the disk 66 and the g <tl t 71 in close contact with and diaqut.



  Ayto and type of operation, the plate 53 is abaiaaet at each die plate 10 from the bottom and moving continuously *, moves you with the plate of one. distance .p4citi't, high bed your to the top from plate # * and returned @ to pooîtion
 EMI17.4
 
 EMI17.5
 Initiates to the <-4taau of the plate = trio * of the bottom 10 and the other .- plate * and is lowered to cooperate with it following a
 EMI17.6
 continuous operating cycle *
 EMI17.7
 The cooperating operation of the plate 53 with a * ..tried plate.

   bottom 10 includes the loan and the flatten-
 EMI17.8
 peripheral edge of the bottom film 13 against the surface
 EMI17.9
 1 cavity of the matrix plate and p4Snph'riqullitnt around the cavities 40 which are not there, the proosage effect is Died by a base buffer 7S in the form of an elastic frame formed 4th 0 & 0 \ 1 ", - cabbage or d ' an M & lC1tttH- material:

   to the convtirable rubber which can 't.:r (' (Jll., p'l.! "against the surface of the top of the plate ru.t: ot .. and the ball 10, as shown in Figure 6 to maintain perished1
 EMI17.10
 rically and tightly establish the bottom film 13 against the plate.
 EMI17.11
 The outermost end of the arm 54 carries

 <Desc / Clms Page number 18>

 
 EMI18.1
 way fi. its mfvà 76 the application of vacuum and ftmant of lul ** lat of the type to ajoti4o of My known typo which is connected 00IlY .. \) 1 .... by <m <wanehw flexible 77 th wat source of vacuum note Show.

   The novelty towards the bottom of the plate 93 in 000 operation with my trio plate * 10 results in the opening of 3L '<Mag <76 in vertical alignment and in oondltloni <t <portpheric closure with the opening 46 of the plate #atrlGt li'ajutagt 76 can Itrl provided with a gasket d <batwo which can cooperate with the surface of the plate to temer .ollpl "IIi.ni 1'ollv'l1I" 46. To open the valve 48 and give comwbice) - tiaa Mtrt the parts of pa "ac" 46, 47 and}! 0 <the 414 year of frame priQQlpa3, of the thing * 55 in lakes of the Mi-om Ion station, empty # and we have the Matra the soft in figure 7j fat mxm d * My block of 0 '"78 which is 1 & 1111. towards the interior in the trajectory of the movement of lever 80 dlactiomment de Iten- ... b1., 8OUPfoP'" # The drop of 1., 1.1 '00 in. 81118 sonps that the application of the vacuum to the passage 46 has for con "quino.



  1 * open the valve assembly and miso'on comMùn1c .. tion due parts of pattatta 47 and 50.



  Vacuum is produced through the passages 1ftt'r1 .. which *> 111 now counie.t1on and into the 111ft room. vacuum defined by seal 44 and t1Dtl ... nt. through the small * passages 52 communicating with the interior don cavities of ... t10 "406 TA p.l11cult du baa lâ covers co.pt'C8n 'loft cavity * of tricos4O and is lido so as to constitute a closure ptiriph'1'1qul complete all around with this result
 EMI18.2
 that the all-empty ease of the bottom die plate means that
 EMI18.3
 the parts .. of film placed .. above are attracted to the bottom in the cavities * 40, com * shown. Figure 6. The 4tft # ur-refrigerated of the film 13 allows easy attraction or stretching of this film, the thread * or rea- * pollicle.
 EMI18.4
 both in its stretched or stretched state.

   As described previously,

 <Desc / Clms Page number 19>

 
 EMI19.1
 The amorphous polyvinylidene chloride film may be crystallized by extension but it will be understood that the extent of extension caused by the operational aspects just described is not suitable to cause any substantial crystallization to an extent which hinders full use of unique properties
 EMI19.2
 Muting or autofu $ ïon of the over-chilled polyvinylidene fila or venlo-ruro film When the fila parts have been drawn down into the cavities. 40.

   The matrix plate of the b &. <is now in a condition to receive a loading of product * the continued operation of the vacuum mine apparatus of the town plate * at the bottom, results in the separation of the nozzle 76 of with
 EMI19.3
 the Matrix plate.

   The branch 54 at this 4t * pu of the to4r-tlonnement cycle will rise vertically and the apparatus carriage will shift longitudinally in the longitudinal direction of the machine to bring the plate $ 3 and the nozzle 76 into cooperation.
 EMI19.4
 with the following die plate 10 # At the moment of the separation with the filling device empty, the block or * 78 takes
 EMI19.5
 end and the valve assembly 49 expires to maintain the established vacuum in the chamber defined by seal 44.

   In this way the parts of the film which have been drawn inwards
 EMI19.6
 die cavity 40 are held there by vacuum. any possible effect of memory or the like is thus-defeated Quran described previously, as a result of the evacuated
 EMI19.7
 tion of the matrix plates * from the bottom to attract the film from the bottom U Downwards in each die cavity 40 * the ilm die cavities born are loaded with product 15.

   The particular product shown is such as sausages such as chain-type Vienna sausages, the product being deposited on the film Ij attracts inwardly four cavities 40 through the filling.

 <Desc / Clms Page number 20>

 any product loading equipment @ or by hand,
Immediately before the movement of the product loaded bottom die plates to come into die cooperation formed 1 * package with the top die plates * 20 at the package forming deck * 18,

     a series 81 of means * for- matrix and continuously moving authors formed by introduced elements *, ** combine with the bottom matrix plates * along a lateral extent of these to put successive elements * 82 fork-shaped in cooperative association with the plated. Figure 19 shows the complete set of Insert Parts 81 which have extended same as the set of bottom die plates from a point not located immediately before the forming station

    packaging 18 and to the end of the bottom die plate series following the ball removal station @ 27. The forks 82 best seen at Fig. 9 include a part * 83 N extending vertically, attached from above and below to end conveyor chains 84 which are suitably driven around chain wheels 85 spaced vertically (Figure 19) in temporary relation to the series of matrix plates.

   bottom 10 which move continuously * The vertical part * 83 of each fork 82 is provided * with a pair of arms 86 directed in the opposite direction which extend inward and which carry at their ends the outermost outer rollers cam followers 87 which mount vertically spaced from each other.



  The rollers 87 cooperate with a pair of vertically spaced cam flights 88 suitably mounted on the elements. frame or frame 90 and 91 which extend through the series of insert pieces for the die plates 8) The support elements 90 and 91 are in turn carried by

 <Desc / Clms Page number 21>

 
 EMI21.1
 a * transverse * main intake plate * 92 which are worn
 EMI21.2
 by do * bottom frame elements 93 'extending into $ le $ * ne
 EMI21.3
 longitudinal of the packaging machine.
 EMI21.4
 



  Don successive forked elements * 62 * were guided in their course by the track. of barrel 08 cooperating with the cam followers 81. The vertical parts 83 of the ch * 4u fork are moreover # provided with a follower gulet of caNt 4 which cooperates with a cam follower not shown *, for 614, v * r Ï6gè¯ roAQent each fork 62 while it comes in alignment with a matrix plate 10 to raise each fork above 3cu-i
 EMI21.5
 from the edge next to the bottom film 13 for
 EMI21.6
 touching wrinkling or scratching or other damage to the head film. Cotte particularity of lifting this. horsefly-
 EMI21.7
 very to the left part of figure 10.

   Once the
 EMI21.8
 the fork 62 is suitably disposed above the part of the adjacent film and the bottom die plate 10. The fork is lowered to rest on the edge portion -U.
 EMI21.9
 film.
 EMI21.10
 



  Each fork element 82 # as best seen in Figure llu 1-o ,,,., Takes a pair of spaced protruding pipeline pieces 1, 95 which are fully trimmed, iit at louis end;) exterior by a like rubber member 4 of the rubber 96 which is designed to provide a complete seal with opposing surface portions. number of IlAtr1 plates ...

   this from above and below when. ' these do not combine lice '
 EMI21.11
 packing formation buta as will be described, La face
 EMI21.12
 vertical end 97 of each protrusion 95 is exposed cl present tori> 1 through 11, several outwardly opening passages 98 which extend inwardly in relief.
 EMI21.13
 convergent and which are in communication with an opening-
 EMI21.14
 vertical 100 and extending across the top of the room 96

 <Desc / Clms Page number 22>

 
 EMI22.1
 and It, 'ni. lOr ... o.nt. from 1a111:

  t. ' The fork 95 Coma * on 10 volts 10 better at the bottom of the element 96 closes the opening 100 at its bottom * and this opening is available only through the surface of the relief of the element. plies introduced @ and through the outer vertical face * 97 thereof ..



     With the combination of forks $ 82 with Ion plated. bottom dies 10, the top skin; 16 is supplied on the bottom 10 $ die * plate as shown. figure 10,
 EMI22.2
 in #! # times WHICH and join their top 20 die plates with the bottom die plates 10 * Each fork 8.



   and provided with a. wherevirturs central 101 which apyto put in place. auwdesous 4'a. The bottom die plate 10 aligns directly with the opening 46 in the cavity plate 43 of the inner die plate 10 described in Figure 12. This alignment is best seen in Figure 12.



  Figures 9 and 10 show the nMi'nt * $ t for the operation of the a <S) * i <t of the top die plates 20 in the package forming station 16. Each pack of the above 20 is formed of a base plate 102 which * and provided * with a. pair of attachment ears' of chains 103, located * along the edge. opposite sides and suitably connected to a * pair. of chain of * contribution 21.

   This arrangement is the mima
 EMI22.3
 that the one described above knows about the mounting for operation of the bottom die plates 10 and not that the plate support chains * 21 are properly mounted around everything. matched strings 24 of which only two are
 EMI22.4
 shown ** 11.figure 10.

   The positive placement of the successive top die plates 20 during their active movement and ob- tained by a cam structure 104 (Fig, 9) suitably supported against the set of the top die plates by one or more. several element. cross beam

 <Desc / Clms Page number 23>

   105 which are supported at their furnace by frame elements
 EMI23.1
 bttl 106 mounted on the main tranverealg blt1 plate. 92 of the machine.

   the cam track assembly 104 includes a continuous cam track 107 in cooperation with
 EMI23.2
 camo follower assembly * 108 suitably mounted to the rear face of the bottom plate member * of each top die plate 20 between the lugs * of attachment thereof * This cam arrangement provides a positive guide for
 EMI23.3
 the top set of die plates 20 to maintain their proper placement during movement and return during a pack forming cycle?. *
 EMI23.4
 donation series, deacuo 20 matrix plates *,

   go finds a $ 110 Spring Loaded cap assembly that includes an absorber roller
 EMI23.5
  t'hâta: L3.a. 1.1,. '.. 111' itvtf 19 fi t A # *> ** # Il. "'11. ,,". N. d to each top die plate 90 as it passes below, for X'f / vlt.r IU111-.01 of a release agefi oonvllnabl1 to avoid any 00: \. 1 "1. possible of the film fflMr- <r * fri managed to this plate during the formation of the umboh- llage.
 EMI23.6
 



  With particular reference to Figure 11. each top die plate 20 is of general construction * .. = b81. , the bottom Matrix plate 10 which. previously described. The top die plate closed with the part
 EMI23.7
 of ba & e plate 104 / provided with a drilled opening 112 into which a connection is properly screwed with a $ = chu 113, this connection or connection being attached in turn to a * tench 34 which extends '1':

  1 "the valve & vacuum assembly, ilpota- kit, 239 The passage 112 together with a vertical passage 124 formed in a part of cavity plate 113 constituting a part of the structure of the top Matrix plate, The part of plate A cavity 115 is properly attached to the part of base plate 102 * your is separated by a member of,

  joint

 <Desc / Clms Page number 24>

      116 which among other things knows * a peripheral closure of the parts of the plates with each other. As in the whole '
 EMI24.1
 of the bottom die plate * 0 # the gasket 116 defines a transverse slot tome region 117 located at the back and part of a gasket 116 as seen at the right part of figure 11 close the combined passages 112 and 114 by
 EMI24.2
 report A la rûgioa de mise loua vide 117.

   This area is formed in conjunction with several small passages 118 leading vertically which in turn come into communication with die cavities 120 formed in the face of the plate portion 115. with cavities correspond to the cavities of dies 40 and
 EMI24.3
 andcording with Islands, of the cooperating base plate 10.



  The vertical passage 114 of the partit 115 of the cavity plate
 EMI24.4
 of each top 20 die plate is communicated with a passage 121 directed hortsontaloment inwards which communicates in turn with a vertical passage 122. 'opening onto the tac. da gone. of die plate and lined with the vertical opening 100 of a part of pl4os Introduced * protrusion 95 of a fork 62.



  Going to 1.fAurl la, oh4que top die plate 20 1.4 ') mpr.nd, all the same a pasjagt twists 12' in * the lacquer is aimed * a 3.24 attachment fitting For a Channel which rolte a flaadbla 25 sleeve & deaaut die plate.



  The pad 123 is vertically downward in communication with the transverse region * of empty plate 117 and in 1. Communication mae # a joint 116 will simply have the) peripheral stanchion between the combined parts ** of plate . dies 102 and 115 The * adjoining * part of the cavity plate * part 115 is suitably perforated to receive a nozzle member 125 which tmlt e * lllio downward from the face of the member. (the top Matrix plate and which is dimti. given to be received * in the opening 101 of the fork 82

 <Desc / Clms Page number 25>

 
 EMI25.1
 and 8 # 6t # hdto through its most haawed tapered end castles tightly into opening 46 of a bottom die plate Handset 10.

   t1 element, nozzle 123 * and provided with a passage 126 Anterior directed vertically which. and the branch: 25 in ClolAll1llmLc.tion with the bottom matrix plate 10p c * t element dtajut4i & t also functions as a spindle gtentratniment d4tno 10UVW'AfO 46, In bone particularly deferring 1 in figure 13, the face to cAVlt4do the plate part , cavities 115 (a .omp6rtourt die plate 20 is shown in detail.

   It will be seen that the passage * 114 communicating with the passage 121 is furthermore in communication with a right-angled passage 127 which
 EMI25.2
 These are then communicated with a pair of spaced passages 122 of the type described above. This arrangement is necessary to give proper communication between the branch 24 of Figure 11 and the pair of protruding inserts 95 of a fork 82 * Each End portion of a die cavity 120 is defined with a dyid region 128 which receives an inserted fork portion 95 with passages 122 aligning with passages 100 and 98 in each inserted fork portion.

   To seal the faces which come into contact with the cooperating matrix plates from above and below the cavity plate portion $ 11 of
 EMI25.3
 each top die plate 20 is suitably grooved around the cavities 120 therein and protruding gaskets 130 are inserted into the grooves. Each plate part
 EMI25.4
 The cavity II5 is outturned by a protruding drive pin 131 which is received in a pin opening 45 of a bottom die plate 10. The meeting of these elements is shown in Figure 11.



   As previously described, the lower matrix plate carrier series 10 can be trained.

 <Desc / Clms Page number 26>

 
 EMI26.1
 k uni 80 "'"' triât single. cotto letter, movement in% 'C & 1 ... ht proper to drive the equipment do Met in vacuum of 14 pll4 ... triol from the bottom to the poet 140 his addition, due to the <<: eneet9tnt do 1 correspondence do the training spindle described * Oi-d..I "'1 with regard to the * pl.qu .... tr1cer from above and donbouso the M <s) e wouï'co' of asoviveiatnt also controls the , 'ri..upér1.urt d plaqua mat11c .. from above At the packing station 18.

   Bu plus # with the rotation of the wheel 4 cho $ no 24 that we see at gnuçhi of 1'1 figure 10, its shaft 132 runs away from turning * wind and carries a chain wheel 133 which pAT 3t.'initë! [ iadi * i of a * chain 134 drives a "chain wheel 135 fixed to a shaft i36. Referring to figure 9 the shaft 1) 6 is suitably connected At my inner end * dan, the set of, vote do cam 104 and is attached by its other end to the assembly dw aoupapo rotary 93 and it is suitably connected to actuate it in synchronism With the operation of the assembly of the valve deanuei Jw'natMbIt $ patrices Rotary 23 is suitably mounted to a b'tt element 137 on the trane blt1 element, veraal 138 which is supported by the element.

   frames, verticals 90 and 91 * A unique motion source arrangement of this kind ensures complete synchronization of the various islands.
 EMI26.2
 ment $ which constitute the Multiply positions.
 EMI26.3
 



  With particular reference to Figure 1, the operation of the top and bottom die plates results in completely covering the product 15 outside the cavities of the cooperating die plates 40 and 120.



  The bottom film 13, as previously described, was drawn down into the .vit '. 40 bottom die plates
 EMI26.4
 
 EMI26.5
 and the product 15 rests on it. The top film 116 is slightly larger in width than the bottom film
 EMI26.6
 13 and extends over the product 15 in the cavities 120 and

 <Desc / Clms Page number 27>

 externally with respect to it / by covering the b4mde 41 of each bottom die plate 10.

   In figure 11 we show
 EMI27.1
 that along the left border as shown the top film 16 is pressed against the bottom film 13 and extends over the uppermost part of the web 41 and is punched as follows to be held in place during the package forming operation. A complete match of these die plate surfaces is expected by
 EMI27.2
 a groove 40 which extends along the upper die plate 20 and in which received the strip 41 of protruding film retainers.

   The bottom die plate 10 is joined by peripheral grooves 141 which extend around the cavities 40 but the grooves do not play a role during operation.
 EMI27.3
 packaging forming part and are ready to be operated during the packaging lifting operation as will be described.



   Referring again to figure 11, the
 EMI27.4
 on the right, the films 13 and 16, as seen in this figure, are separated by the introduction of the projections 95 of the fork 82 received between the top and bottom die plates. In this respect, communication with the interior of
 EMI27.5
 packaging and with the product itself is ensured by the combined passages of the inserted forks 95 and those which. '& 11-, gn4with these in the upper die plate 20. The remaining edges of the die plate cavities tighten strongly the portions of film which have received between them, as shown in Fig. 20 and the only access to the package which is embedded between the combined die plates, is through a protruding portion 95 of the fork 82.

   The die plates are tightly clamped together by the operation of the cam track 101 through the roller assemblies 10ed.

 <Desc / Clms Page number 28>

 



   When the plates are completely closed,? 1 vacuum build-up cycle can be started. This cycle can change and the description given here is simply intended to provide an example. Vacuum is drawn through tubes * 24 and 25 by the operation of the rotary valve assembly 23 and as shown in Figure 12 results in evacuation of the transverse vacuum regions defined by *
Joined 44 and 116 and all of the combined cavities 40 and 120 are emptied through passages 52 and 118.

   The vacuum release valve assembly 48 is actuated together prior to the vacuum cycle by a suitable cam block, not shown, but similar to block 78 previously described. The vacuum produced in the cavities,
40 and 116 behind the regions of film therein results in the regions of film being held against the recessed surfaces and in fact away from the product. This prevents complete combination of the film parts during the evacuation of the interior of the package around the product 15.

   Flushing can be performed by injecting an inert gas or the like through tube 24 and the adjoining bandages * which go between the film portions 13 and 16 through the protruding portions of the fork 95 as shown in figure 11.

   Complete flushing of the interior of the package that made possible by this arrangement considering the rotary valve attic 23 may be designed to operate for intermittent injection of inert gas and for intermittent purging but during this time. particular operating cycle; any purge will be produced under vacuum conditions which are unable to overcome the vacuum imposed on the film portions within the cavities through tube 25 to prevent the film from crushing around the product.

   When the interior of the packaging is evacuated and any air and oxygen which may be present therein is removed.

 <Desc / Clms Page number 29>

 the packaging is now completely sealed.
 EMI29.1
 To achieve this, the tube 2j is opened to 1 atewrphere and the vacuum established in the die plates and behind the parts of the stirred films in the combined cavities is completely broken In the meantime an intense vacuum is
 EMI29.2
 applied to tube 24 and the interior of, *. ' packaging * and completely emptied.

   This causes the parts of the film * which make up the product to be completely drawn together on * a measure indicated by the broken lines in FIG. 20. The partners discarded. film. 13 and 16 which extend between the * end faces 97 of the inserted fork parts * 95 are
 EMI29.3
 strongly pressed against each other to properly bond this marginal region of each package. Poly-rilethylidene chloride film super-cooling features facilitate the kind of packaging formation described and allow complete pulling of the film all around the surfaces of the product by conforming to it. exact.



   As previously described following the formation of the package and the separation of the matrix plates from the. Above 20 relative to the bottom die plates 10, the packages still attached to continuous and combined sheets of film surrounding them are transported through a film crystallization zone comprising. the heater assembly 26 or more of these contract assemblies in Figure 1B.

   Heating of the wrapping film is
 EMI29.4
 performed to such an extent that the film cooling properties; are completely conquered to allow easy handling of the packaging following
 EMI29.5
 removal of the packaging.



  Packaging still carried by the die plates
 EMI29.6
 down 10 after passing through the film cr1t1! jQn region, reach the embll, en!

 <Desc / Clms Page number 30>

 
 EMI30.1
 packaging lift 27 which includes the endless series of laughed. Package removal neck 28. Referring particularly to Figures 15 and 18, each package removal die 28 is formed by a cup-shaped base member 142 opening downward. on which and resiliently mounted a boot-shaped frame member 143 which is the same diameter as the cross-sectional interior portion of base member 142.

   As shown in the left part of FIG.



  15. Each frame or frame member 143 is resiliently mounted on a bottom member. 142 in its four corners by a spring and pin assembly. The base member 142 comprises a downwardly opening housing portion 144 provided with an annular shoulder portion 145 of reduced diameter through which a pin 146 is received. This pin has an enlarged head portion. 147 which abuts against the region of the upper surface of the shoulder 145 but which is free
 EMI30.2
 of and move upwards from it.

   The lower end of the lute pin properly attached to a clip 148 which was part of the frame member 143.
 EMI30.3
 A coil spring 150 surrounds pin 1r6 and rests. by its upper end against the lower surface of the shoulder 145 and by its lower end beam the surface
 EMI30.4
 upper ie the spindle attachment part 140.

   Thus when the frame member 143 comes into contact with the top surface of a bottom die plate 10, additional downward pressure on the base member 142 results in an elevation.
 EMI30.5
 tion of spindles * H7 From the shoulders. 145 against the force of the springs 150. This ensures an elastic clamping of the part of the film sheet which surrounds the packaging *
 EMI30.6
 finished., against the surge of the matrix plate 10. For ailler. to this fixed clamping of the marginal parts of films con re
 EMI30.7
 the bottom die plate 10, the cooperating surface of 1616; 0 ment of frame 143 has a peripheral seal 151.

   The ment

 <Desc / Clms Page number 31>

   com @ e shown in figure 18, is an outrât with a part
152 outwardly protruding which carries a bottom protruding alignment pin 153 which is received in the pin recess 45 of a lower die plate 10.



   After active encounter of the packing removal dies 28 and the bottom die plates 10, the pin 153 co-operates with the bottom die plates to ensure the entry into proper alignment of the blade 164 into the recess 141 of the. the bottom die plate, A pair of pins 153 can be used to also give a control link if desired,
In the frame member 143 is received a zoning plate 154 for the knife means to which are attached several rods 155 directed * vertically.

   As best seen in the right part of Figure 15. the rods *
155 a 'extend upwardly into rod shells 156 formed in the base plate member 142 and protrude outwardly from that member through the central openings 157. A compressed coil spring 158 surrounds each rod. 155 in its envelope 156 and rest * at its base end against the base of the rod 155 and at its upper end to a shoulder portion 160 defined by the opening 157.

   The various springs -158 have the effect of continuously forcing the lamina plate 154 downward to the cut position.



  A collar member 161 is slidably mounted on each rod outwardly of the opening 157 to abut the outer upper surface of the rod shell 156 as the rod 155 moves downward in direction. - belly to the pressure of the spring 158. A spring seat device 162 is attached to the uppermost end of the rod 155 and retains an upper end of a coil spring 163 between that bitch and the collar member 161.

   Lora of the downward movement of the knife blade assembly tompre- naht plate 154 in the manner to be described, the element

 <Desc / Clms Page number 32>

 Collior 161 abuts against the outer top surface of stem shell 156 and spring 163 is compressed by the sliding movement of member 161 toward spring seat 162. This particular arrangement has a damping effect. Damping, when the blade assembly is actuated.



   Plate 154 suitably carries a flexible band blade means 164 which extends around the periphery of each cavity 40 of a bottom die plate 10 with its cutting edge accommodating in cutting grooves 141. previously described and as shown in Figure 17. Part of the band-shaped knife blade 164 is countered in Figure 21.

   It will be seen that its cutting edge is provided with several surfaces with an edge cut in teeth of act 165 and behind the cutting edge the strip is united with openings 166 by which * fixing means can be cast to fix the cutting strip. to the backing plate 154. The backing plate 154 is provided with lip-like portions at the periphery and in the center 16? which support the uniform edge of the knife strip 164. Various portions of the knife strip 164 are provided with tents 168 tooth the recess is sufficient to create tab-type connections between an edge of a package and.

   the film which surrounds it during the packaging removal operations. The connections of the leg type will be described more fully below.



   Each package removal die 28 is suitably attached to a pair of conveyor chains 30 by lugs 170 formed along opposing side margins of base member 142. Chains 30 pass around paired chain wheels 31 as described above the base element 142 carries along its outer surface an assembly of cam follower roller 171 which cooperates with the edge of a cam track of a properly mounted plate 172.

 <Desc / Clms Page number 33>

 
 EMI33.1
 between the chain wheels 31. The cam track plate 172 is large and extends between the spaced shafts of the paired chain wheels. 31.

   The inward plaque of aa peri-
 EMI33.2
 outer cam track is provided with a recess of
 EMI33.3
 cam track in the form of a groove on its two sides, Us pairs of rod 155 da actuating the knife plate dp type added to figure 15 are arranged on the opposite side * of the cam track plate 172p 1 * structural arrangement being identical
 EMI33.4
 in each case.
 EMI33.5
 



  Also, on the opposite sides of the back plate of sa * 172 there is a control rod directed "trti (; a1..nt 174 which is fixed at its bottom end to the knife plate 154). 174 * 'extends upwards through a suitable opening 17 of the fuck plate 142 and at abn * xtr4 mited Upper * is fitted with ita together at S% let follower 40
 EMI33.6
 
 EMI33.7
 cam 176 which is contact with the hollowed out bu surface 13
 EMI33.8
 
 EMI33.9
 as seen in figure 15.

   Lea comes out 158 continually pressing the knife plate 154 towards 11.beats # the roller 176 functions as the sole holdback to hold the plate
 EMI33.10
 knife 154 in the retracted position in the frame member or
 EMI33.11
 of frame 143 as shown in broken lines left z at ig. 15.
 EMI33.12
 The hollow cam track 173 is provided with a part *
 EMI33.13
 intelOmpu, defined by a bftaque falling surface 177 at a point in the cooperative movement of the packaging removal dies and combined with the matrices. from ... so, had
 EMI33.14
 ort desires separation of packaging.

   Roller 176 is preferably stopped a short distance from the lower end
 EMI33.15
 of a pivotally mown bridge member 178 which has * an inclined cam track surface * 180 along which
 EMI33.16
 way of
 EMI33.17
 roller 176 rises to meet * its / out trislool level and remove knife blade 64 in linked cam element3 ,,

   lino nylon 179 washer received around the rod of CQQI1t '174

 <Desc / Clms Page number 34>

 
 EMI34.1
 eep the roller 176 from striking the lower end of the bridge-shaped element 178 to avoid damage.
 EMI34.2
 Ceatee previously described the total downward movement of the knife plate 174 will also be damped by the compression of the damper springs 163 between the sliding collar 161 and the spring seat means 162, attached to each rod 155.
 EMI34.3
 



  The poM element 178 is pivoted by a $ 1 pin attached to the camgà 172 track plate. A rod 182 is attached by a pin 183 to the bridge element 178 near its center for raising and lowering. this during the vertical March * of the rod 182. In the raised position in the position of bridge 178 the cam track surface 180 of the latter will adorn a continuation of the cam surface of the groove 173
 EMI34.4
 The rod 182 * # extends downwardly through a support envelope 164 and can slide therein, as shown in figure 16. The rod 182 is provided with a slot 185 which o # 6. tends above the upper surface of the support shell 184.

   A roller 186 is suitably mounted in the upper part of the tent 185 and is in contact with a surface
 EMI34.5
 of cams 18 with a sliding arm operable like a. plate 188 which, along its bottom surface, slides against the top surface of 1tntrelapp. support; 184. The rod 182 at its soNet is provided with a partit rod 190 of smaller diameter around which is mounted a spring, coil 191.



  From 8Of.n. conyaDabl .. Not Shown works in cooperation with coil spring 191 to coast * rod 102 downward to hold 1 * bridge member 178 in.
 EMI34.6
 its lowered position, as shown in figure 15.



  The locking arm 188 is provided with a part 192 of inclined cam surface which joins 1 <horizontal surface formed by the part 178 and gives a surface by which

 <Desc / Clms Page number 35>

 the roller 186 and the rod 182 attached to it are raised
 EMI35.1
 when the arm 188 is forced to pass through the slot 185 in the rod 182 in the direction of the arrow of Figure 16, In this way the rod 182 can be raised with the bridge member 179 pivoting upward to close the interrupted region of the
 EMI35.2
 yote 4.

   recessed cam 173 * The top surface of the inclined cam track portion 192 of the locking arm 188 connects to a flat cam track surface portion 193 which when contacted with the roller u 186 holds the rod 182 and
 EMI35.3
 bridge member 178 in the uppermost position against spring 191.
 EMI35.4
 Figure 22 shows a preferred shape and. separation of packages from combined waste film sheets
 EMI35.5
 as indicated by the general schematic arrangement r.pr4 * 8ntt in figure lob.

   Due to the slit recesses 163 formed in the knife bands 164 in the package removal dies 28 which have been described above, each package 34 is substantially separated from the film that surrounds it.
 EMI35.6
 all except oe small areas thundering pattl 194r The tab forming areas 194 are simply sufficient to give sufficient retention between the waste film and the packaging.
 EMI35.7
 whereby after separation of the waste film portion from the bottom die plates 10, the packages 34 will also easily separate from the die plates and lift from the die cavities 40.

   The decree film material, following the separation of the package removal dies 28 and the lower die plates 10 is wound onto a roll assembly 195 and at least.
 EMI35.8
 itartiellemont returned to waste accumulation roll 13 Shown in Figure 1B.

   The roller assembly 19 includes opposing end frame members 196 of which the one ui is furthest apart, as seen in Figure 22, is bored.

 <Desc / Clms Page number 36>

   suitably on a machine frame member, not shown, a main support rod 197 extends through the spaced frame members 196 which in turn mount between them a plurality of rollers 200 including a terminal end roller, 201 around which the waste film moves. The diameter of any roll or pebble coming in contact with the waste film is such that a rather sharp arc path is defined for the waste film. Thus, when the film travels along the path sharp arch,

   the top surface of each package protruding upward from the plane of the waste film comes into contact with the roll or roller
201 or 200 and is forced to descend to such an extent that the legs 194 are broken,
After complete separation of each package 34 from the surrounding waste film or wrap, the package is directed onto the conveyor 35 previously described generally in Figure 1B. This transporter has the effect of carrying Ion 34 Tore packaging to a dispatch post where it is ready to be bundled and shipped.

   The roller set! or rol @ aux195 can pull placed to come into contact with the packages by several rollers 200 if desired according to the particular operating conditions. A line of separation between films 13 and 16 is shown in FIG. 22 for the sole purpose of identifying the parts of the waste film, it being understood that with the complete melting of the polyvinylidene chloride films on - refrigerated none. ! demarcation is not likely to be noticed. In addition, the tear-off tabs 194 are of an exaggerated size at the
Figure 22 to show them better.

   Figures 23-29 relate to modified forms of cooperating top and bottom die plates used as described above in subject

 <Desc / Clms Page number 37>

 top and bottom die plates 20 and 10. A modified bottom die plate 202, as shown in particular
 EMI37.1
 --- in Figures 3 and 24 * is formed from a base plate suitably connected 203 to a gasket 204 and a cavity plate 205. The cavity plate 205 includes a pair of cavities 206 in which packages are formed. and who are surrounded
 EMI37.2
 around their periphery by a groove 207 receiving a packing removal knife.

   The cavities 206 are in communication with a plurality of vacuum passages 208 in the corners and in the center to draw down the overlying sheet of film.
 EMI37.3
 chilled from the bottom of the .8me = r.4Abre as described above. Along one edge of the paired cavities 206 and across the
 EMI37.4
 In front of the cavity plate 205 extends a strip of film or film 210 suitably mounted in a groove in the face of the cavity plate 205 and provided with pairs of saw teeth 211 spread throughout.

   This strip works in the same way as described above with regard to the strip 41 of the bottom die plate 10.,
Referring particularly to Figure 26, the base plate 203 carries therein a valve assembly
 EMI37.5
 . discharge 212 provided with an actuation lever 213 actuated by a cam.

   This assembly plays the same role as the relief valve assembly 48 which was previously described.
 EMI37.6
 corn it is mounted along the mower of each bottom 202 .a (to operate under the action of the cam track, ncn shown which would be mounted centrally along the path of motion of the die plate series of the bottom Along a side edge of the bottom plate * 203 there is an attachment ear 214
 EMI37.7
 to a chain and a pair of 215 cajee follower sets find you there auaai.

   Along the side border oppu. 1 baseplate 203 and find a set 216 of int1) ,,: a for <packaging conformation matrix, which is ps> ¯ 't <? # 1 * baae plate 203. This set includes a part / denying * -

 <Desc / Clms Page number 38>

 which is = ni * of cam followers 217 apart and an opening
 EMI38.1
 chain attachment 218 to cooperate with the pillow element 214 to attach the bottom die plate to a pair of chain to transport these plates,
Figures 23-26 show the die-insertion assembly 216 protruding upward from the undersurface of the cavity plate 205.

   Set includes
 EMI38.2
 a vertically directed al "" '1220 which, centered along the side wall 216, is cut to define an outward opening formed by a groove-shaped recess 221. A rod member of the rack type 222 is received in the bore 220 and its dimensions are such that it can move freely in the vertical sound system.

   A surface portion of the rod member 222 is hollowed out to define a
 EMI38.3
 outwardly opening groove portion 223 which extends at least as much as the grooved region 221./A roller type cam follower 224 is suitably mounted
 EMI38.4
 on the rod member 222 in the groove 223 and made. & ill18 with the outside in the groove 221 of the assembly 216, An inner upper surface portion of the rod member 222 is united in a series of including * of gears 225 which are in
 EMI38.5
 taken with a gear member 226 extending transversely through the assembly 216 in a bore 227 located near the top of the assembly 216.



   As best seen in Figures 23, 24 and 26, opposite ends of the gear member 226 protrude.
 EMI38.6
 Attached thereto were finger die-forming inserts 226 attached to the assembly 216 and 11. Each introductory piece 226 is 41Mn.lonn6, to protrude inside above the adjoining upper surface of the cavity plate 205 in association with a cavity edge portion 206.

   These introduced coins are all

 <Desc / Clms Page number 39>

 very similar to the parts of protruding inserted parts
95 of the forks 82 which have been described above. since they are completely covered at their outer ends with rubber or a rubber-like material 230, only the end vertical surfaces 231 being exposed. Each inserted part comprises three vertically directed passages 232 which open upward through the liner 230 and which do not extend through the bottom of the liner, as shown particularly in Figure
25.

   With each vertical passage 232 communicates a horizontal passage 233 which opens to the exposed vertical face 231 of the inserted part.



   As best shown in Figure 27, the base of each insert or insert piece 228 is incidentally a split collar portion 234 for mounting on gear ends 226. Set screws 235 (Fign. 24 and 26) fixedly clamp the pieces inserted on the gear 226 to allow the pivoting movement of the pieces introduced 228 in and from the raised position as shown in FIG. . 23 and as shown also in Fig. 25 in broken lines and to come into the inwardly directed position or horizontal position and to exit therefrom, as seen in Figs. 24 and 25.



   The introduction of the introductory pieces 228 is controlled. by a pair of cam track members 236 and 237 shown in broken lines in Figs. 23 and 24, it being understood that these cam vbies are a fixed part of the machine which forms the packages.

   During the movement of a bottom die plate
202 towards the post 14 of evacuating the bottom die plates, the introduced parts 228 are kept in an inactive raised position by the cooperation of the cam follower 224 and the bottom surface of the cam track 236. Referring to by - particularly in figure 25s the lowering of the cam follower

 <Desc / Clms Page number 40>

   224 in the broken line position shown results in movement vera the baa of rod member 222, accompanied by rotation of gear 226 and elevation of the inserted parts 228.

   When the inserted pieces are elevated, the top surface of the bottom die plate 202 is completely free to receive thereon the bottom film 13 which covers it with the cavity 206. Immediately following the overlap by the die. film 13, the cam follower 224 leaves the track 236 and comes into contact with the inclined portion 238 of the elevated cam track 237, Ainai, the cam follower moves upward on the top surface of the track 237,

   As shown in Figures 24 and 25 and the rod member 222 is elevated along with the rotation of the rod 226 with downward pivoting of the inserted pieces 228 in contact with the cover film.



   The introduced assembly 216 is further provided with a. vertically directed passage 240 which opens to the top surface of the assembly through the opening which is surrounded by a compressible seal 241. The passage extends vertically downward below the surface top of base plate 203 and is connected thereto with a transversely inwardly directed panel (not shown) which in turn communicates with the top surface of base plate 203 and gasket 204 of a manner which will be described.

   Seal 204, as best seen in Figure 27, provides a complete peripheral seal for the space defined by this seal between base plate 203 and cavity plate; 205 * Suitable fastening openings 242 are formed in the joint to receive fasteners 243 (Figure 26) which pass through the base plate 203 and go into the cavity 205 to connect the assembly * The joint is provided in its center with an opening 244 through which arrives a stud 245

 <Desc / Clms Page number 41>

 centering and locking plate made in one piece with the bottom surface of the cavity plate 205 and protruding from that)

  -ci * The stud 245 is provided with a threaded opening 246 which receives a fastener 247 (Fig. 26) directed from the bottom of the rear plate 203. This rear plate further comprises a housing of stud 248 which receives the stud. 245. In this way, the plates are properly aligned during assembly and the central parts of the assembly are locked * / fixed.



   Seal 204 is further provided with a plurality of interconnected vacuum regions 250 defined by cut parts. These regions come under the passages 208 which coterminate with the die cavities 206. The seal 204 is also provided with narrow cut out vacuum regions 251 which are in communication with companion passages in the base plate 203 described above and. connected to the opening 240 in the introduced assembly 216.



   As a result of the combination of the bottom film 13 with the bottom die plate 202 and the lowering of the introduced parts 228 to the operating position, a similar bottom die plate evacuator equipment in its operation as described in station 14, operates, with the bottom die plate 202 to discharge this and draw the film down into the cavities 206. The nozzle member 76 of the The vacuum assembly contacts gasket 241 at the upper end of opening 240 and is sealingly applied to opening 240 to remove air from the lower die plate. through him.

   The air is exhausted through the interconnected passages which extend through the base plate 203 and into communi-; cation with the narrow slot 251 of the gasket 204. @ @ easily that the evacuation takes place in the fen @@ e 'region and by

 <Desc / Clms Page number 42>

 the passages 208 for pulling the film down into the cavities 206,

   The slot arrangement on gasket 204 in the manner described assures immediate response to evacuation and substantial efficiency in operation * Gasket 204 is also suitable for use in the top die plate assembly which will be described. and for this use this seal is still provided with apertures 252 for receiving spaced drive pins and a cut-out vacuum region 253. These special parts of seal 204 do not play any role in the assembly. dies baa.



     The top die plate assembly modified 254 as best seen in Figs. 28 and 29 consist of a., Base plate 255, a gasket 204 of the type previously described, and a cavity plate 256. The cavity plate 56 is formed with a pair of cavities. 257 which have central and corner vacuum passages 258 in communication with the cavity. The lateral marginal portions of the cavity 257 and the adjoining plate surface are grooved to form recesses 260 in which inserts are cast to form the dies 228.

   The coating 230 of the resilient seal of the inserts 228 is pressed against the surface of the grooved regions 260 to provide a complete seal to the package forming die in the closed position. The cavities 257 are further closed at the periphery by the seals 261 which one hundred suitably mounted in grooves formed in the cavity plate 256.

   Openings 262 for receiving drive pins are formed at opposing areas of the cavity plate 256 to receive upwardly projecting drive pins 263 which are mounted on the cavity plate 205 of the. 'set of inner die plates * 202 (Figs. 23 and 24). The front plate 256 is further provided with three passages 264 which extend vertically through it and in communication with the regions.

 <Desc / Clms Page number 43>

 ainures 260 for receiving introduced coins.

   These passages are arranged to pull aligned with the passages 232 of the introduced coins 228 and for a peripheral wedge by the high entrainment 230 of the inserted coins.



   Gasket 204 is also used in the upper die plate assembly 254 and as shown in Figure 29, it is arranged between plates 255 and 256 to receive fasteners, not shown, 1 through openings 242 to connect the gasket. set of upper die plates.



  The cavity plate 256 of the assembly also includes at its center a locking and centering stud protruding rearwardly which is of the same type as the stud 245 described above, this stud extending through seal opening 244 to be attached to back plate 255.

   The empty Misa regions 250 are arranged to communicate with the passages 258 of the cavities 257 to prevent the film from crushing around the product during rinsing of the packaging region between the films 13 and 16 as described above. The posterior backplate 255 carries linings 265 and 266 which attach the tubes 24 and 25 thereto. As shown in Figure 29. the seal or fitting 266 is in communication with an interior passage 267 which extends thereto. transversely towards the interior of the rear plate or backing plate 255 and which in turn communicates with the vertical passages * 268 and 270.

   Passage 268 is exposed along the laterally projecting surface portion of back plate 255 past the adjoining edge of gasket 204 and the cavity plate. 256. The passage 268 is arranged to communicate with the bottom die plate passage 2, '+ 0 when the plates are combined * for package forming operations. The passage 270 communicates with the empty filling tent 251 of the seal 204 which is in turn in communication with

 <Desc / Clms Page number 44>

 the tent regions 250 and the passages 258 of the die cavities 257.



   Fitting 265 is in communication with an interior passage 271 extending into back plate 255, which in turn communicates with vertical passage 272 which opens to the face of backing plate 255 and is in communication. - nication with the slot of the seal 253. After assembly of the;

   die plate 254, the slot in the seal 253 aligns over the passages 253 of the cavity plate * 256 * Thus, the passage 272 is communicated with the passages 264 as well as the passages for die inserted parts when the complete packaging forming die is assembled for a packaging operation. The operation is similar to that described above in that a vacuum is produced through the tubing 25 by the action of a rotary valve assembly 23 and the passages 267, 2268, 270 and August 240 emptied. of air.

   This ensures the evacuation of the slot regions 250 and 251 of the seals 204 of the upper die plate and the lower one. Thus, the top and bottom films received in die cavities 257 and 206 are prevented from combining with each other by the vacuum exerted on their outer surface through the master cavity passages. ... While the filma are thus maintained. the interior of the package may be swept or flushed by inert gas passing through tubing 24 and associated passages which pass through the inserted die pieces 228.

   When these operations are completed, the tubing 25 and associated passages will be opened to the atmosphere to release the films and a vacuum is formed by the tube 24 and the associated passages to bring the films together around. of the product and to complete the packaging.



   The valve assembly 212 of the plate assembly

 <Desc / Clms Page number 45>

   matric @@ of the lease communicates with the slot region 251 in the seal 204 of this assembly and with the passages leading from the passage 240 of the assembly 216. This assembly operates in the same manner as described with respect to the valve assembly. 48.



   In all fundamentals, the modified die plates will be used in the same manner as described above with respect to machine operation and being involved with die plates 10 and 20.

   The pivotal mounting of die inserts 228 on the modified bottom plate 202 eliminates the need for an aparate set of forks 82 which are tempa-adjusted to operate in coincidence with the die plates. cavity plate 205 and bottom die plate 202 carry the finished packages which are still attached to the continuous film surrounding them through the package removal station 27 and die. Cutter packs 28 operate in the manner previously described with the cutters received in the recesses. peripherals 207.

   Following separation of packages and during lifting of the waste film over die plate 202, the introduced parts 228 can be raised to the inactive position by a cam set and easily separated from the marginal parts of the die. film.



  While the operation performed by the apparatus has been described assuming the use of a refrigerated polyvinylidene chloride film, it is understood that the apparatus is capable of working with other films exhibiting properties. has enough neighbors.



   CLAIMS.

** ATTENTION ** end of DESC field can contain start of CLMS **.


    

Claims (1)

1.- Packaging forming apparatus for use with a polyvinylidene chloride film in its refrigerated state, comprising matrix forming means comprising cooperating matrix plates and conveyor means for moving these plates to bring them into association. @n tempo- <Desc / Clms Page number 46> embellishment formation process and then disengaging them * at least one of the die plates having a die cavity to receive a product, means for providing a first skin to this die plate to cover it less than its part EMI46.1 cavity, hard first plate vacuum mine means Ilatr111tf this with respect to the matrix plate in question to bring in pirtpherical contact a first film with the plate and to attract this film in its center in the part in case, other means to providing a second film to the other of the die plates for use therewith to form a package enclosing the product when the die plates are moved so as to cooperate in forming EMI46.2 tion of a packaging of seconda means of ease under vacuum of the matrix plate can 8trl actuated at the same time as one of the matrix plates during their association to form a ballas', so as to attract the portions of film formed by the plates into an arrangement where alleu surround and tightly enclose the product. 2.- Apparatus for forming packaging according to EMI46.3 Claim 1..uni, in addition to means of removal of <Mt * 6tre ballages which can / put sn operation with one. plaqua dies to separate the packaging formed from the film which is originally enclosed * by the plates. 3.- Apparatus for forming packaging according to EMI46.4 Claim 1 # wherein the ombâltb 'lage removal yen comprises ditabalo-legs * die-cutting die means movable in temporary association with one of the die plates following formation of the package EMI46.5 in its cavity patrtie die means of packaging cutouts comprising knife means operating on the periphery of the party. , cavity of the die to surround a package which was there in order to substantially separate the film which * and around the means A knife capable of EMI46.6 iter. 1. u cutting position and released from it and for <- * <Desc / Clms Page number 47> its to the cutting position by resilient means, and cam actuated retaining means holding the knife means in the Inactive position against the pressure of the resilient means, the retaining means comprising a cam track which is interrupted to ensure a controlled actuated knife means. 4. A package forming apparatus according to claim 3, further comprising film guiding and collecting means, receives the waste films from one of the die plates and ejection means. 'packaging which completely achieve the separation a' @ mballage, With respect to the films which it @ ourent following the cutting of these by the means at coutea @. 5.- Packaging forming apparatus according to any one of the preceding claims, wherein the first means of emptying the plates are in the form of an elastic frame to come into peripheral and sealed contact with the first film. on one. die plates and comprising nozzle type vacuum application means for co-operating with cast iron passages within the die plate in question and in communication with the cavity portion thereof, means for giving a reciprocating movement to the first means for quickly placing the matrix plates in order to bring them into cooperation with successive matrix plates and to release them therefrom. 6. A package forming apparatus according to claim 5 wherein at least one of the die plates comprises film attaching means protruding from the film or film receiving surface of the patrice plate in question. 7. A packaging forming apparatus according to claim 6, in which the means for attaching the oil <Desc / Clms Page number 48> protrusions include projections suitable for driving holes in the films to maintain the film during the formation of the package. 8. A package forming apparatus according to any preceding claim wherein the second means for evacuating the die plates comprises an inserted part participating in the forming means, of a die, capable of being received between. matrix plates $ cooperating along peripheral parts thereof in, their association to force packaging, the introduced parts comprising internal passages which align with closed passages inside the die plates * for application of vacuum during the formation of the package and control means for application of vacuum connected to these die plates and their interior passages for forming an ordered package during association of the die plates to form a package. 9. The package forming apparatus according to claim 8 in which the inserted part constituting die forming means is carried by transport means adjusted in relation to the operating movement of die plates to be received between them just. before the association of these matrix plates to form a matrix. 10. A package forming apparatus according to claim 8, wherein the die-forming insert is pivotally mounted on a patrice plate along an edge portion thereof to be positioned so as not to. not be associated with the film-receiving surfaces of the die plate before and after package formation and insert part positioning cam means forming part of the package forming apparatus and operating with the inserted part to control its position. <Desc / Clms Page number 49> 11. A package forming apparatus according to any one of the preceding claims * this apparatus comprising a first conveyor on which are mounted successive die plates mentioned first and a second conveyor on which are mounted several successive cooperating die plates. mentioned second,. the first and second die plates being arranged to combine this temporarily and to form a continuous series of packaging shaping dies in movement, the second die plates being placed above the first die plates when in associative form to form packages and the first less die plates having a recessed portion for receiving a product and forming a package, the first film being received on these first plates. 12. A package forming apparatus according to claim 10 and claim 11, wherein the inserted die forming part is movable from an inactive vertical position to come into an active horizontal position overhanging the first. plate and to be enclosed between it and the top die plate and cam means operative with each die inserted trap to hold the latter in an upright position during supply of the film to the bottom die plates and then move the insertion part to a horizontal position, 13. A package forming apparatus according to claim 11 or claim 12, wherein the package removing means comprises conveyor carriers carrying a series of package cutting die means each of the die means. cutout of a package comprising a c @ dre-shaped part which must be taken around a package and tighten the film surrounding it * against the <Desc / Clms Page number 50> first die plate, the knife ends located inside the frame-shaped part and being able to pull moved in and out of it for film cutting stops 14. A package forming apparatus according to claim 13, in which the * interrupted @ part of the cam roof means is defined by a pivotally mounted po @ t element capable of forming a bridge on the interrupted part @ to interfere with the operation of the knife means in one position and to give in another position an inclined cam saw * for the return of the luxury knife from the automatic position to an inactive position. 15. A package forming apparatus according to claim 13 or claim 14, wherein the knife means * 1 are interrupted * to provide tear tabs which maintain a weakened bond * between a package and the film which it is. 'surrounds to help separate the packaging * and film from the first die plates, the package removal * means * further comprising waste film collecting means * which attracts film from the first die plate in an arcuate path onto a roller assembly, the change in direction of the film above the roller assembly sufficient to cause this assembly to drill each A package out of the neighboring film * to overcome the bonding force of the tear-off tabs $ and to separate each package from this film. 16. A package forming apparatus according to any one of claims 11 to 15, further comprising a conveyor drive motor means reading back to either the first or the second conveyor, the first and the die plates. comprising control means cooperating to transmit the driving force to the other transport <Desc / Clms Page number 51> turn following the temporary combination of said plate * matrices. 17. A package forming apparatus according to claim 16, wherein the mating drive means of the die plates is in the form of a drive broach carried by each plate in a series and recess @ receiver. * of pins carried @ by each plate of the other series. 18. A package forming apparatus according to claim 1, in substance as described above with reference to the accompanying drawings, 19.- Packaging when formed by the apparatus claimed in any of the preceding claims. 20.- A set of dies for forming packages for use with super-chilled polyvinylidene chloride film to make packages thereof, using the apparatus claimed in claim 1, said set of dies comprising cooperating die plates. having cooperating surfaces, at least one of which is recessed to define a cavity ready to receive a product and to give shape to a packaging, elastic closure means carried by at least one of the surfaces around the cavity while at the same time being interrupted along a portion of the edge of the cavity to receive therein an inserted part suitable for forming a die, directed transversely, this inserted part comprising resilient sealing means which in cooperation with the firstly named closing means completely seal this cavity, at least one of said die plates comprising internal passages which are in communication with the interior passages of the inserted part, one follows less of the passages of the inserted part being still in communication with the cavity and its application and control means <Desc / Clms Page number 52> void connected to the whole and in communication with the passages * 21.- Package forming die set; according to claim 20, wherein the inserted part is pivotally mounted on a die plate to move to the operating position in the transverse direction and to leave this position. * 22. Claim 20, wherein the inserted part this in the form of an arm-like element mounted on a journaled shaft in a casing which forms part of the die plate, and vertically actuable means cooperating with the shaft to reverse the direction of rotation thereof 'to move the insertion part in the active position in the transverse direction inwardly to a position where it is above the shaft. surface of the plate and to leave this position actuation means in a vertical direction: comprising an own cam to cooperate with a cam track to change the direction. 23. A die assembly for forming a package according to any one of claims 70 to 22, wherein each die plate which is formed with a cavity is provided with an internally transverse slit-shaped region which lies below it. the cavity, the passages of the plate extending from this cavity towards said region and from this region towards the inserted part and means to seal in the region subdividing it into interconnecting channels to give a movement controlled by air and gas, through this plate. 24. A die assembly for forming packages according to any one of claims 20 to 23, wherein the die plates include interlocking means. <Desc / Clms Page number 53> which, after bringing together the surfaces of the matrix plates, cooperate to obtain a unitary movement for the whole. 25. A die assembly for forcing packages according to any one of claims 20 to 24, wherein at least one of the die plates at its contact surface. carries piercing means for a protruding film to cooperate with a film spreading over the plate to maintain the position of the film on the plate, 26.- Die assembly for forming packages according to any one of claims 20 to 25, in which at least one of the die plates is provided with several product receiving cavities * and suitable for shaping packages, this set including a part not introduced? each cavity. 27. A die assembly for forming packages according to any one of claims 20 to 26 wherein each of the die plates comprises interior passages which are in communication with the interior passages of the inserted part which inserted part comprises means through which the passages of each die plate mount will reread between them. 28. A die assembly for forming packages according to any one of claims 20 to 27 further comprising valve means carried by one of the plates and in communication with the passages for opening them to the plate. atmospheric pressure after opening of the valve means 29.- Die assembly for forming packages according to claim 20 in substance as described above with reference to the accompanying drawings *