US2332544A - Process and machine for the manufacture of envelopes of paper or similar material - Google Patents

Process and machine for the manufacture of envelopes of paper or similar material Download PDF

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Publication number
US2332544A
US2332544A US342408A US34240840A US2332544A US 2332544 A US2332544 A US 2332544A US 342408 A US342408 A US 342408A US 34240840 A US34240840 A US 34240840A US 2332544 A US2332544 A US 2332544A
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United States
Prior art keywords
roller
suction
envelopes
rollers
blanks
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Expired - Lifetime
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US342408A
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English (en)
Inventor
Winkler Alfred
Dunnebier Max
Gelpke Karl
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D27/00—Envelopes or like essentially-rectangular flexible containers for postal or other purposes having no structural provision for thickness of contents
    • B65D27/12—Closures
    • B65D27/30—Closures with special means for indicating unauthorised opening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2155/00—Flexible containers made from webs
    • B31B2155/002—Flexible containers made from webs by joining superimposed webs, e.g. with separate bottom webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B2160/00—Shape of flexible containers
    • B31B2160/10—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents
    • B31B2160/102—Shape of flexible containers rectangular and flat, i.e. without structural provision for thickness of contents obtained from essentially rectangular sheets

Definitions

  • PROCESS AND MACHINE FOR THE MANUFACTURE OF ENVELOPES OF PAPER 0R SIMILAR MATERIAL Filed June 26, 1940 5 Sheets-Sheet 5 65 Jif/orney Patented Oct. 26, 1943 PROCESS AND MACHINE FOR THE MANU- FACTURE F ENVELOPES OF PAPER OR SHVIILAR MATERIAL 1 Alfred Winkler, Max Diinnebier, and Karl Gelpke,
  • the invention relates to a process and machine for the manufacture of safety envelopes of paper or similar material.
  • the process according to the invention is particularly well suited, for the reason that in connection with it the rectilinear operation heretofore customary in rotating machines of this kind is avoided and its place is taken by a working operation in which it is not single or individual roller pairs that effect the guidance of the blanks or articles.
  • the conveyance of the blanks, according to the process of the invention is effected rather by making the different sheets of paper adhere to the surfaces of the rollers, for instance, by suction.
  • the two envelope parts are in the first place out off from the strip of material or shaped and provided with adhesive substance, then superimposed upon each other and subsequently treated as individual blanks.
  • the roller distance and thus the roller diameter on account of the mildance of the blanks by adhesion of the blanks to the rollers, does not enter into consideration, even with the smallest sizes, as a factor for limiting the size of the blanks, and therefore conveyor rollers of any desired size may be selected without restriction of the lowest blank limit, an almost unlimited applicability of one and the same operation or of one and the same machine, with reference to the difference between the smallest and the largest blank size to be made, is obtainable.
  • the individual blank parts are brought together not, as is done in the known processes, by running in the same direction, but by running in opposite directions.
  • a special additional or auxiliary adhesion of the bottom between the front and back parts for the purpose of insuring the operation as in the known processes becomes unnecessary;
  • Such an additional or auxiliary adhesion is not precluded in the process according to the invention, but is possible in a still more perfect form, since in connection with it the front and back parts can be pasted together with each other both at the bottom of the envelope and on both sides.
  • This additional or auxiliary adhesion may be provided for or eliminated according to the purpose for which the envelopes are to be used.
  • suction air through the different stages of the operation by means of suction air, in which connection suction air is also made use of in certain places for holding the blank fast during its treatment.
  • th machine is adjustable within exceptionally wide limits, that is to say, on the same machine blanks can be made from the smallest to the largest dimensions, because with this manner of operation the roller distancewhich in turn finds its limitation in the roller diameter-does not enter into consideration for the measuring of the smallest blank to be made, as is the case with rotating machines of the known type.
  • the cutting rollers which detach the paper from the paper strip are provided with segment pieces displaceable in the direction of the roller circumference which, according to the size of the envelope to be manufactured, can be changed as regards their position on the roller circumference; on the other hand, the cutting roller which makes the comer stampings, is provided with an air line which is placed partly under vacuum and partly under pressure, so that the corner blanks, the so-called snips," sucked on in the first place by the suction effect can be eliminated from the operation and blown off into a receptacle.
  • the machin moreover i provided; according to the invention, with an arrangement by means of which the throttling of the individual suction lines is effected in all rollers by a'single operation, so that considerable time is saved when changing to different envelope sizes.
  • Fig. 1 shows a machine for the manufacture of envelopes in an operation wherein the envelopes are guided through the machine in the direction of their longer dimension;
  • Fig. 2 shows one of the suction rollers in the longitudinal section
  • Fig. 3 shows the securing of the separating and corner-cutting knives on the roller
  • Fig. 4 shows the development of the envelopes in the different stages of the working process, the upper portion of the figure referring to the back parts and the lower portion to the front parts and to the union of the front and back parts. This operation corresponds to Fig. 1.
  • Fig. 5 shows a machine for an operation in which the envelopes are guided in the direction of their shorter dimension
  • Fig. 6 shows in the difierent working stages the development of the envelopes in the working operation according to Fig. 5.
  • the material roll I supplies the material for the exactly rectangular or quadrangular back sheet of the envelope.
  • the paper strip is conveyed through the two traction roller pairs 2, 3; 4, 5, between which it is guided in the well-known manner around a sliding tension roller 6. It goes between the cutting roller 1 and its hardened countor-roller 8, which latter is provided with a suction device, so that the paper strip is sucked on at the front edge and, after the cutting off, is brought between the rollers 8, 9 by the roller 8 l3; I, I5 via the tension guide roll 16.
  • the roller i8 is a cutting roller which cooperates with a hardened roller II. It bears the separating knives I9 and th corner cutting knives 20, so that the strip passing through is simultaneously separated into blanks and provided with the corner-cutouts for the flaps.
  • the cutting roller I8 has an arrangement or device by means of which the snips or scraps cut from the comers are sucked and removed from the operation, in such a way that they are held to the roller until they hav arrived vertically below the roller axis. There they are repelled or pushed off into a receptacle 2
  • the shaped blank detached from the paper strip after the cutting, and now finished, is brought by the roller [1 between the rollers ll, I0, being seized here by suction by the roller i0 and provided in th first place, by a gumming device, with the required adhesive application on its side and bottom flaps.
  • the gumming device consists of a roller 23 applymg the adhesive to the shaped blank, this roller taking the adhesive substance from the roller 25 which runs in the adhesive container or receptacle 24.
  • adhesive substance can be applied both to the side flaps and the bottom flap and also close alongside of the folding lines of these flaps, to the inner surface of the blank (the front part of the blank).
  • the last mentioned application of adhesive serves for the additlonal or auxiliary pasting of the front part of the blank to the back part and enters into consideration for instance when absolutely dustproof envelopes are to be manufactured.
  • the shaped blank After the shaped blank is provided with adhesive on its side and bottom flaps, it is still held by the suction roller l0 and is thus fed between the rollers 9 and I0. Here it combines with the back sheet which meanwhile has been fed by the roller 9. After the shaped blank and back sheet are thus united with each other, they reach a member 21 which is guided over a table 26 and consists of an endless band moving over the rolls 28 29. Over this band runs an endless conveyer chain 33 which is guided over the rolls 3!, 32.
  • This conveyor chain 33 is an additional characteristic of the invention. Due to its application instead of conveyor rollers, it is possible, in keeping with the entire object of the invention, to convey even the smallest blanks.
  • the conveyor chain 33 is studded at short intervals with rubber cams which cooperate with the endless conveyor band 21 and thus convey the blank lying in between.
  • the blank By the conveyor chain 33 and the running band 21 the blank is led through the station for folding over the lateral adhesive flaps.
  • the folding over on the back sheet of the side flaps already provided with adhesive substance takes place in the well-known manner by loop guides during the conveyance of the blank by the conveyor chain 33.
  • the blank now pasted at the sides reaches the roller 34 which also has a suction device, by means of-which the blank is held fast near the folding edge of the bottom flap.
  • a folding guide 35 bearing closely on the roller 34 raises the exposed bottom flap, in the first place, at an angle to the blank body.
  • the guide 35 lifts off a little from the roller 34, so that the blank still held fast by suction by the roller 34 can slip through between the guide 35 and the circumference of the roller 34 thus folding over the flap already raised.
  • the guide 35 is controlled by the cam 36 through the medium of the connecting rod 31 and the crank 38 located on the axle of the guide 35.
  • the bottom flap during the further movement of the blank, is pressed firmly on the back sheet and pasted thereto by the pressing-on roller 39.
  • the now finished blank is laid off on the endless stack belt 42 moving slowly over the rolls 40, 4
  • the tools or suction places are contained in fourfold arrangement on all rollers entering into consideration.
  • the object of this arrangement is that when manufacturing all blank sizes an idling or running without load is avoided as much as possible, that is to say, the small blanks which, measured in the direction of their passage through the machine, are not larger than one quarter of the roller circumference, are made fourfold at each revolution of the roller.
  • the envelope size exceeds one quarter of the roller circumference, two of the cutting knives are removed and accordingly two each of the suction lines in all suction rollers are put out of commission, in such a way that two diametrically opposite suction lines continue eifeetive.
  • envelopes can be made up to a size of half the roller circumference.
  • a third knife is likewise taken out and athird suction line per roller is rendered ineffective, so that blanks can then be worked up to the size of the full roller circumference. In that case one blank devolves upon each revolution of the roller.
  • the paper strip runs off uniformly from the roll.
  • the paper strip runs oif intermittently from the roll.
  • the individual sheets may always reach the operation at the proper moment regardless of their dimensions, that is to say, so that they may always be seized at the point where the suction devices and the cuttin tools likewise become effective in the proper place, there are fastened on the cutting cylinders l or l8 segment pieces 54, 55 which are adjustable in the direction of the circumference of the roller.
  • segment pieces are adjusted for each blank size to be manufactured in such a way that together with the counter-roller 8 or I1 they seize the end of the paper strip at the moment in which the correct position of the detached blank resultson the conveyor and working rollers.
  • the seizure of the paper strip takes place by the front edge of the segment pieces together with the mentioned counter-rollers.
  • each roller Into the four drill holes of each roller one pipe 66, capable of rotation therein, is inserted. Small gears 51 are firmly connected with these four pipes. The four gears 51 are engaged by a double width gear 6
  • the suction pipes 66 for that purpose have in their circumference, according to the position in the roller, one or more suction hole rows 59 which can be brought into register with the suction hole rows 58 in the roller itself.
  • the manufacture of the simple rectangular or quadrangular back sheet is effected from individual rolls I, located alongside of each other and having the width of the envelopes to be made. As shown at Fig. 4, the paper strip running off from the roll I is to be separated into individual pieces only in the crosswise direction.
  • this side iiap Since it was seized, however, in the running line of the rollers 45 and 41 by the roller 41 at the side flap located in the rear in the direction of movement, in the neighborhood of the folding line, this side iiap, with the continued movement of the roller 41, is folded over between this roller and the suction plate 48.
  • the suction effect of the roller 41 continues as far as the contact line of the rollers 41 and 48.
  • the roller 48 seizes the blank with suction effect at the second side flap which now lies in the rear in the direction of movement and has not yet been folded over.
  • the second side flap during the further movement of the roller 48 is pressed on between the latter and its counter-roller 50.
  • the envelope now pasted on both longitudinal sides (the leading and trailing edges), is taken over by a belt guide 5
  • the bottom flap On the way from the rollers 48, 50 to the roller 52 and while between the belts 5
  • shaped blank stacks can of course be worked according to the same process instead of roll material, the cutting rollers then being eliminated.
  • a machine for the manufacture of envelopes from sheet material comprising conveyor rollers each having four lines of suction openings for separately conveying back and front blanks for the envelopes, a suction pipe for each suction line, a bore containing each pipe, and suction control means comprising a toothed wheel connected to each pipe, a common toothed wheel in mesh with all the said wheels on the group of pipes for each conveyor roller, and means for turning all said common wheels simultaneously for the simultaneous control of the suction devices in all the conveyor rollers.
  • a machine for the manufacture of envelopes from sheet material comprising means for successively conveying front blanks with flaps thereon and for separately conveying rectangular back blanks, said means comprising rotary members. suction devices on said members for seizing and feeding said blanks individually, an endless band and an endless chain having a row of soft studs cooperating with the band and engaging the blanks for receiving superimposed front and back blanks, means for applying adhesive to the said flaps, and means for closing and pasting the said flaps upon the back blanks.
  • a machine for the manufacture of envelopes from sheet material comprising means for successively conveying front blanks with flaps thereon and for separately conveying rectangular back blanks, said means comprising rotary members, suction devices on said members for seizing and feeding said blanks individually, cutting rolls for separating the front blanks and removing the corners therefrom, suction means for temporarily retaining the said corners, pressure means for discharging said corners; means for applying adhesive to the said flaps, and means for closing and pasting the said flaps upon the back blanks.
  • a machine for the manufacture of envelopes from sheet material comprising means for successively conveying front blanks with flaps thereon and for separately conveying rectangular back blanks, said means comprising rotary members, suction devices on said members for seizing and feeding said blanks individually, cutting rollers for the separation of the blanks, cutting knives mounted on said rollers, means for clamping said knives to said rollers after adjustment in a direction circumferentially of the rollers to suit the dimensions of the blanks being handled, means for applying adhesive to the said flaps, and means for closing and pasting the said flaps upon the back blanks.
  • a machine for the manufacture of envelopes, bags and similar articles of various size provided with front parts having lateral, bottom and closure flaps and with rectangular back parts, said machine comprising roller means provided with suction means whereby shaped and detached front parts of substantially equal size and detached rectangular back parts of substantially equal size are engaged on said roller means and are successively conveyed and whereby each back part is brought together with a front part in superposed relation to form an article, the largest sized article formed by said machine having a dimension in the direction of its movement through the machine which is of a magnitude substantially equal to that of the circumference of said roller means, said suction means being adjustable to accommodate the machine for conveying detached parts of equal size having a value for said mentioned dimension which may vary in magnitude between the magnitude of the circumference of said roller means and less than one quarter the magnitude of said circumference, means for turning over the lateral and bottom flaps of the front part onto the back part and for pasting said flaps upon the back part, and means for the delivery of the finished envelope.
  • ALFRED WINKLER MAX DUNNEBIER. KARL GELPKE.

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  • Mechanical Engineering (AREA)
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US342408A 1938-09-17 1940-06-26 Process and machine for the manufacture of envelopes of paper or similar material Expired - Lifetime US2332544A (en)

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FR (1) FR875310A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2790593A (en) * 1953-04-29 1957-04-30 Uarco Inc Series-connected envelopes
US4726804A (en) * 1986-04-28 1988-02-23 Wesley Business Forms Method and apparatus for fabricating continuous envelopes
WO2000074618A1 (fr) * 1999-06-02 2000-12-14 Lts Lohmann Therapie-Systeme Ag Procede et dispositif pour preparer un produit a base de bande striee, notamment un produit a usage medical et/ou contenant un principe actif, ainsi que des recipients ou des sachets a bords scellables, remplissables

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793926A (en) * 1971-02-23 1974-02-26 K Honsel Apparatus for folding of envelope blanks

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2790593A (en) * 1953-04-29 1957-04-30 Uarco Inc Series-connected envelopes
US4726804A (en) * 1986-04-28 1988-02-23 Wesley Business Forms Method and apparatus for fabricating continuous envelopes
WO2000074618A1 (fr) * 1999-06-02 2000-12-14 Lts Lohmann Therapie-Systeme Ag Procede et dispositif pour preparer un produit a base de bande striee, notamment un produit a usage medical et/ou contenant un principe actif, ainsi que des recipients ou des sachets a bords scellables, remplissables
AU774713B2 (en) * 1999-06-02 2004-07-08 Lts Lohmann Therapie-Systeme Ag Method and device for producing a product made of strip tape, especially a medical product and/or a product containing active substances as well as fillable receptacles or pouches whose edges can be sealed
RU2242202C2 (ru) * 1999-06-02 2004-12-20 Лтс Ломанн Терапи-Зюстеме Аг Способ изготовления изделия из узкой ленты и устройство для его осуществления
US7114422B1 (en) 1999-06-02 2006-10-03 Lts Lohmann Therapie-Systeme Ag Method and device for producing a product made of strip tape, especially a medical product and/or a product containing active substances as well as fillable receptacles or pouches whose edges can be sealed
US20060288834A1 (en) * 1999-06-02 2006-12-28 Detlev Neuland Process and device for manufacturing a product from strip tape, especially for manufacturing a medicinal and/or active substance-containing product as well as fillable containers or sealed-margin bags
US20060288830A1 (en) * 1999-06-02 2006-12-28 Detlev Neuland Process and device for manufacturing a product from strip tape, especially for manufacturing a medicinal and/or active substance-containing product as well as fillable containers or sealed-margin bags
US7370563B2 (en) 1999-06-02 2008-05-13 Lts Lohmann Therapie-Systeme Ag Process and device for manufacturing a product from strip tape, especially for manufacturing a medicinal and/or active substance-containing product as well as fillable containers or sealed-margin bags
CZ302656B6 (cs) * 1999-06-02 2011-08-17 Lts Lohmann Therapie-Systeme Ag Zpusob a zarízení pro výrobu produktu ze svazku pruhu, zejména medicínského produktu a/nebo produktu obsahujícího úcinné látky, jakož i plnitelných obalu nebo sácku s uzavíratelným okrajem
US8616101B2 (en) 1999-06-02 2013-12-31 Lts Lohmann Therapie-Systeme Ag Process and device for manufacturing a product from strip tape, especially for manufacturing a medicinal and/or active substance-containing product as well as fillable containers or sealed-margin bags

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Publication number Publication date
FR875310A (fr) 1942-09-16

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