EP0912400B1 - Procede de production d'elements d'ouverture pour emballage - Google Patents

Procede de production d'elements d'ouverture pour emballage Download PDF

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Publication number
EP0912400B1
EP0912400B1 EP97932703A EP97932703A EP0912400B1 EP 0912400 B1 EP0912400 B1 EP 0912400B1 EP 97932703 A EP97932703 A EP 97932703A EP 97932703 A EP97932703 A EP 97932703A EP 0912400 B1 EP0912400 B1 EP 0912400B1
Authority
EP
European Patent Office
Prior art keywords
cuts
width
plastic material
packaging
polyamide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP97932703A
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German (de)
English (en)
Other versions
EP0912400A1 (fr
EP0912400B2 (fr
Inventor
Bernd Albrecht
Gebhard Kregel
Gerd Busch
Heinz-Dieter Rabbe
Jürgen LUTTMANN
Herbert Cordes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mars Inc
Original Assignee
Mars Inc
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Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26026633&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0912400(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DE1996124042 external-priority patent/DE19624042C2/de
Application filed by Mars Inc filed Critical Mars Inc
Publication of EP0912400A1 publication Critical patent/EP0912400A1/fr
Publication of EP0912400B1 publication Critical patent/EP0912400B1/fr
Application granted granted Critical
Publication of EP0912400B2 publication Critical patent/EP0912400B2/fr
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B65B61/182—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements by applying tear-strips or tear-tapes

Definitions

  • the invention relates to a method for producing a Packaging consisting essentially of plastic film, with means of opening the packaging without the aid of Tool and packaging that can be produced afterwards.
  • Packaging that without the use of tools, such as. Knives, can openers etc., can be opened, i.e. so-called easy-open systems have been used in recent years because of the significant simplification of handling the consumer has become increasingly important.
  • plastic film packaging is so-called tear strips known either in the film material are incorporated or subsequently on the filled Packaging by welding on at the same time Embossing.
  • a packaging is known from US Pat. No. 4,840,270, into which a removal opening is punched which is then covered by a partially removable strip. The one for this attached cuts are curved and self-contained around a corresponding removal opening define. When the cover strip is pulled off, a complete one is immediately obtained Removal opening exposed from which the product can be removed.
  • the object of the present invention is to overcome the disadvantages to overcome the known prior art and a To provide procedures with which for packaging made of plastic film reliably an easy-open concept can be realized.
  • this object is achieved in that the Plastic film fed from the roll to a cutting station will be in one of the size of the final packaging adapted clock cuts are attached, each of which is substantially rectilinear and their Width is less than the width of the plastic film and cut through the thickness completely; that in the area the cuts cover them completely Cover strips are applied in a sealing but removable manner; and that the plastic film prepared in this way in in a manner known per se for the final packaging is processed further.
  • the cuts by a number of partial cuts separated by webs appropriate.
  • the width of the Partial cuts and / or the webs in different places the cuts are the same or, in the second alternative, to be different.
  • the invention further provides that a number n first sequence of partial sections Partial cuts of constant width alternating with a one Number m of second sections comprising partial cuts Partial cuts of constant width is applied, the Width of the partial sections belonging to the first sequence of the width of the partial cuts belonging to the second sequence is different.
  • n 1 and m is 1.
  • n 1 and m is 2.
  • polypropylene one or multilayer polyamide
  • polypropylene with the polyamide layer is preferably either a coextruded polyamide or consists of at least two polyamide layers, wherein which is a layer of a polyamide with high barrier properties while the other layer is made of a polyamide with high shrinkage.
  • A is preferred as the material for the cover strip Laminate used, the inner one, above the cuts in the Plastic film arranged layer of an adhesive peelable plastic consists, preferably of a copolymer made of polyethylene and polypropylene.
  • the method of the present invention realizes several Advantages that - at least in this combination - at Processes according to the prior art have not yet been implemented have been.
  • On the other hand is a manufactured by the inventive method Packaging by pulling off the cover strip over the Cut and break up the packaging due to deformation the same particularly easy in the area of the cut open and remove the content.
  • the advantages described are particularly noticeable, if the filled packaging undergoes a sterilization process is subjected.
  • the system described is without able to withstand temperatures and internal pressures to withstand such a process, on the other the packaging material is subject to such Heat treatment of shrinkage, which is the breaking up of the Packaging by deformation after pulling off the Masking tape over the cut further facilitated.
  • the Advantages described with packaging that one Sterilization process are known with Easy-Open systems not accessible.
  • the use of the preferred materials both for the plastic film as well as for the cover strip bring even more advantages.
  • the special preferred laminate plastic film offers enough Stability that no stretch due to the deduction from the roll and there is no tearing of the cut made.
  • each one in one of the size of the final packaging adapted stroke made cuts, its width is less than the width of the plastic film and the die Plastic film completely cut through by a number of partial cuts separated by webs, is generally an increased mechanical stability after achievable packaging achieved. This increased mechanical stability is also reflected in the Withdrawal behavior during film transport in the Packaging machine in such a way that it is used by thinner foils is possible. It also diminishes there is a risk of the film tearing.
  • the quality of the sealed seam increases the higher strength.
  • the heating energy requirement, which is required when the cover strip is sealed is reduced.
  • Another procedural advantage is that by cutting through a number of through webs separate partial sections is attached, the feed of the heating energy required for sealing from the Tear strip opposite side is simplified.
  • the packaging that can be produced by the method according to the invention shows a higher compared to transport stress mechanical stability, which not only leads to a reduction the product loss caused by transport damage leads, but especially if it is perishable Products, reduces the risk of microbial spoilage.
  • the width of the partial cut delimited by two webs larger or is less than or equal to the width of a web.
  • FIG. 1 can be seen for packaging using plastic film 10 from a supply roll rollers used to smooth the film run (not shown) fed to a cutting station 20.
  • a Cut 11 by means of a cutting tool 25.
  • the cut 11 becomes centered in the film 10 attached, the width of the cut 11 so too choose is that - depending on the plastic material used - by further pulling off the film Elongation or tearing of the cut is avoided. It is essential that the cut 11 is not just one Weakening of the plastic material causes, but this completely severed.
  • the subsequent station 30 for applying the cover strips 15 these are based on a known Technology manufactured, supplied and applied. This is done first a feed from a supply roll 32 a cutting station 34, in the cover strip 15 in the desired Width, e.g. 6 to 12 mm. These masking strips are applied to a vacuum Stamp 35 of a sealing device 36 fixed. Subsequently the sealing device 36 is rotated by 180 ° and the with Vacuum-fixed cover strips 15 on the next one supplied Cut 11 in the plastic film 10 at one Temperature of approx. 210 ° C sealed so that the cut is completely sealed.
  • the packaging a known hose forming and filling station (not shown) in which e.g. on sausage-like product is produced.
  • this is according to the invention preferred material from two layers of polypropylene 12, 12 ', between which a single or multi-layer polyamide layer 13 is arranged, wherein the polyamide layer be co-extruded polyamide or from two polyamide layers 13 ', 13' ', of which the upper, i.e. the the outer polypropylene layer 12 facing layer 13 ' a polyamide with high barrier properties, while the lower, i.e. that of the inner polypropylene layer 12 'facing layer 13' 'of a polyamide with high Shrinkage properties exist.
  • the plastic material can be a packaging material be made available, on the one hand, excellent Barrier properties against oxygen and water vapor and also optimal on the polyamide layer is printable.
  • the Covering strip 15 covering width and length attached, which is preferably also constructed as a laminate. It is important to ensure that the one facing the cut Layer 16 of the laminate has the necessary adhesive properties owns, i.e. be fixed firmly over the cut can, but at the same time optimally peelable, i.e. removable is.
  • a copolymer of is particularly preferred Polyethylene and polypropylene proved.
  • the arranged above Layers 17, 18 are in their composition less critical. In the illustrated embodiment, can it is a PET layer 17 and a final one Act polypropylene layer 18, but also other materials are conceivable.
  • FIG. 3 shows one of a sequence of webs 11a constant width separate sections 11b constant Width existing cut, the width of the partial cuts a multiple of the width of the partial cuts separating webs.
  • FIG. 4 shows a sectional design in which the width of the Partial cuts 11b approximately the width of the between the Partially arranged webs 11a corresponds.
  • FIG. 5 shows an embodiment of the cut design, in which the width of the arranged between the partial cuts 11b Webs 11a is smaller than the width of the partial cuts, the partial cuts from an alternating There is a sequence of partial cuts, whereby again the Width of a partial cut larger or smaller than that of the following partial section.
  • FIG. 6 shows an embodiment of the cut design, in which a sequence 11c consisting of two partial cuts alternating with a sequence 11d from a partial section is attached.
  • the partial cuts included in the first sequence have the same width as each other however, versus the width of that in the second order included partial cut shorter.
  • the width of the between the various sequences arranged webs is about the total cutting width approximately constant.
  • the Width of the between the sections of the first sequence Arranged webs be approximately equal to the width of the between arranged the partial sections of the second sequence Stege.
  • FIG. 7 shows a sectional design, which are similar to that shown in FIG. 4 shown cut execution is, however, both the width of the webs as well as that of the partial cuts is significantly reduced, so that a perforation line is formed in the present case becomes.
  • the method according to the invention is particularly suitable Way for the production of cylindrical packaging in Sausage form, which is either a sausage product can act for the food sector or around sausage-presented animal food products, such as a so-called dog sausage, the latter being the Filling from a moist to semi-moist chunky dog food can exist.
  • a sausage product can act for the food sector or around sausage-presented animal food products, such as a so-called dog sausage, the latter being the Filling from a moist to semi-moist chunky dog food can exist.
  • dog sausage so-called dog sausage

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Wrappers (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Claims (17)

  1. Procédé pour fabriquer un emballage, qui est constitué essentiellement par une feuille de matière plastique (10) comportant des moyens pour ouvrir l'emballage sans l'aide d'un outil, selon lequel la feuille de matière plastique (10) est amenée du rouleau dans un poste dans lequel des fentes (11) sont formées à une cadence adaptée à la taille de l'emballage final, la largeur des fentes étant inférieure à la largeur de la feuille de matière plastique (10) et sectionnant complètement cette dernière dans le sens de l'épaisseur, et des bandes de revêtement (15) recouvrant respectivement complètement les fentes (11) sont apposées, dans la zone de ces fentes, de manière à réaliser une étanchéité, tout en étant amovibles, et la feuille de matière plastique (10) ainsi préparée est ensuite traitée de façon connue en soi pour former l'emballage final, caractérisé en ce que les fentes (11) sont formées respectivement avec une conformation sensiblement rectiligne.
  2. Procédé selon la revendication 1, caractérisé en ce que la largeur des fentes (11) s'étend sur 1/4 à 3/4 de la largeur de la feuille de matière plastique (10).
  3. Procédé selon la revendication 2, caractérisé en ce que la largeur de fentes (11) occupe 1/3 à 1/2 de la largeur de la feuille de matière plastique (10).
  4. Procédé selon la revendication 3, caractérisé en ce que la largeur des fentes (11) est égale approximativement à 1/3 de la largeur de la feuille de matière plastique (10).
  5. Procédé selon l'une des revendications précédentes, caractérisé en ce que les fentes (11) sont formées par un certain nombre de fentes partielles (11b) séparées par des barrettes (11a).
  6. Procédé selon la revendication 5, caractérisé en ce que la largeur des fentes partielles (11b) et/ou des barrettes (11a) est identique en différents emplacements des fentes (11).
  7. Procédé selon la revendication 5, caractérisé en ce que la largeur des fentes partielles (11b) et/ou des barrettes (11b) est différente en différents emplacements de fentes (11).
  8. Procédé selon l'une des revendications 5 à 7, caractérisé en ce qu'une première suite de fentes partielles (11b) de largeur constante, qui comprend un nombre n de fentes partielles (11b), est formée en alternance avec une seconde suite de fentes partielles de largeur constante, comprenant un nombre m de fentes partielles (11b), la largeur des fentes partielles (11b) faisant partie de la première suite étant différente de la largeur des fentes partielles faisant partie de la seconde suite.
  9. Procédé selon la revendication 8, caractérisé en ce que n est égal à 1 et m est égal à 1.
  10. Procédé selon la revendication 8, caractérisé en ce que n est égal à 1 et m est égal à 2.
  11. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'on utilise comme feuille de matière plastique (10) un stratifié comprenant la succession de couches indiquée ci-après: polypropylène (12), une ou plusieurs couches de polyamide (13; 13', 13"), polypropylène (12).
  12. Procédé selon la revendication 11, caractérisé en ce que la couche de polyamide (13) est un polyamide coextrudé.
  13. Procédé selon la revendication 11, caractérisé en ce que la couche de polyamide (12) est formée par au moins deux couches de polyamide (13', 13"), une couche (13') étant constituée d'un polyamide possédant des caractéristiques élevées d'arrêt, tandis que l'autre couche (13") est constituée par un polyamide possédant un pouvoir élevé de contraction.
  14. Procédé selon l'une des revendications précédentes, caractérisé en ce qu'on utilise comme matériau pour la bande de revêtement (15) un stratifié, dont la couche intérieure (16), qui est disposée au-dessus des fentes dans la feuille de matière plastique, est formée d'une manière plastique adhésive pelable.
  15. Procédé selon la revendication 14, caractérisé en ce que la couche intérieure (6) est formée d'un copolymère de polyéthylène et de polypropylène.
  16. Procédé selon l'une des revendications précédentes, caractérisé en ce que l'application des bandes (15) s'effectue moyennant l'action d'une température.
EP97932703A 1996-06-17 1997-06-17 Procede de production d'elements d'ouverture pour emballage Expired - Lifetime EP0912400B2 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE1996124042 DE19624042C2 (de) 1996-06-17 1996-06-17 Verfahren zur Herstellung einer Verpackung sowie danach herstellbare Verpackung
DE19624042 1996-06-17
DE19634759A DE19634759C2 (de) 1996-06-17 1996-08-28 Verfahren zur Herstellung einer Verpackung sowie danach herstellbare Verpackung
DE19634759 1996-08-28
PCT/DE1997/001293 WO1997048607A1 (fr) 1996-06-17 1997-06-17 Procede de production d'elements d'ouverture pour emballage

Publications (3)

Publication Number Publication Date
EP0912400A1 EP0912400A1 (fr) 1999-05-06
EP0912400B1 true EP0912400B1 (fr) 2002-01-30
EP0912400B2 EP0912400B2 (fr) 2005-08-03

Family

ID=26026633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97932703A Expired - Lifetime EP0912400B2 (fr) 1996-06-17 1997-06-17 Procede de production d'elements d'ouverture pour emballage

Country Status (8)

Country Link
EP (1) EP0912400B2 (fr)
AU (1) AU715834B2 (fr)
CA (1) CA2258645A1 (fr)
DE (2) DE19634759C2 (fr)
DK (1) DK0912400T3 (fr)
NO (1) NO985859D0 (fr)
NZ (1) NZ333794A (fr)
WO (1) WO1997048607A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10338244A (ja) * 1997-06-03 1998-12-22 Houseki Planning:Kk テープ張り密封袋及びその製法
ATE440032T1 (de) 2004-04-30 2009-09-15 Bosch Gmbh Robert Verfahren zur herstellung von schlauchbeuteln
US7216764B2 (en) * 2004-08-16 2007-05-15 Sealstrip Corporation Easy-open packages
FI121371B (fi) * 2008-12-05 2010-10-29 Lamican Oy Menetelmä ja laitteisto sulkuliuskan asettamiseksi

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4840270A (en) * 1987-12-21 1989-06-20 Nice-Pak Products, Inc. Re-sealable label flap

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE644299A (fr) * 1963-02-25
SE329968B (fr) * 1964-01-16 1970-10-26 Tetra Pak Int
DE3828355A1 (de) * 1988-08-20 1990-02-22 Hoechst Ag Mehrschichtige verpackungsfolie mit gasbarriere
DE4041743A1 (de) * 1990-12-24 1992-06-25 Schickedanz Ver Papierwerk Kontinuierliches verfahren zum herstellen wiederverschliessbarer folienverpackungen
DE4238127A1 (de) † 1992-11-12 1994-05-19 Wolff Walsrode Ag Mehrschichtige coextrudierte, schrumpffähige verstreckte Schlauchfolie
SE502181C2 (sv) * 1994-02-18 1995-09-11 Tetra Laval Holdings & Finance Sätt och anordning för överföring av lappar till en löpande materialbana
FR2736330B1 (fr) * 1995-07-05 1997-08-22 Techmay Sa Procede d'emballage sous pellicule de film dechirable et emballage obtenu

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4840270A (en) * 1987-12-21 1989-06-20 Nice-Pak Products, Inc. Re-sealable label flap

Also Published As

Publication number Publication date
NO985859L (no) 1998-12-14
NO985859D0 (no) 1998-12-14
DE59706253D1 (de) 2002-03-14
CA2258645A1 (fr) 1997-12-24
EP0912400A1 (fr) 1999-05-06
WO1997048607A1 (fr) 1997-12-24
DE19634759A1 (de) 1998-03-05
DE19634759C2 (de) 2003-11-06
AU3618697A (en) 1998-01-07
DK0912400T3 (da) 2002-05-13
AU715834B2 (en) 2000-02-10
EP0912400B2 (fr) 2005-08-03
NZ333794A (en) 2000-08-25

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