WO1987002647A1 - Feuille composite pour emballages - Google Patents

Feuille composite pour emballages Download PDF

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Publication number
WO1987002647A1
WO1987002647A1 PCT/EP1986/000632 EP8600632W WO8702647A1 WO 1987002647 A1 WO1987002647 A1 WO 1987002647A1 EP 8600632 W EP8600632 W EP 8600632W WO 8702647 A1 WO8702647 A1 WO 8702647A1
Authority
WO
WIPO (PCT)
Prior art keywords
packaging
bag
composite film
adhesion
film
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.)
Ceased
Application number
PCT/EP1986/000632
Other languages
German (de)
English (en)
Inventor
Horst Biermann
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.)
IMDUT INTERNATIONAL BV
Original Assignee
IMDUT INTERNATIONAL BV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IMDUT INTERNATIONAL BV filed Critical IMDUT INTERNATIONAL BV
Publication of WO1987002647A1 publication Critical patent/WO1987002647A1/fr
Priority to DK323387A priority Critical patent/DK323387A/da
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/06—Interconnection of layers permitting easy separation
    • 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
    • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
    • B65D81/18—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
    • B65D81/20—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas
    • B65D81/2007—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum
    • B65D81/2023—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient under vacuum or superatmospheric pressure, or in a special atmosphere, e.g. of inert gas under vacuum in a flexible container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging

Definitions

  • the present invention relates to a multi-layer film for special use in packaging of e.g. Food in powder form with simultaneous application of an evacuation process with or without addition of support gas.
  • Laminated packaging films have long been known for the stated purposes and, as is known, evacuated packaging bags are not nice to look at, which is why a repacking is always required so that the product has a good appearance for sale.
  • the repackaging also serves to prevent possible perforation of the evacuated pouch as far as possible and precisely where such perforation can easily occur, i.e. in places where there are sharp-edged bumps.
  • the sensitivity of an evacuated packaging to undesired perforation is all the greater since the granular, powdery particles are sharp-edged. But the perforation can also start on the outside.
  • the invention intends to create a novel multiple composite film which, as is well known, strives to assign all the necessary properties to a film, which result in opaque values, light tightness values and strength values being optimal and at the same time being price-acceptable, but additionally the novel composite film is increased a surprising feature that has never been found before.
  • a gas-impermeable multiple-composite film for packaging purposes is particularly suitable for packaging oxygen-sensitive or oxygen-reacting foods and the like with negative pressure
  • the inner layer representing an independent gas-impermeable vacuum packaging within a gas-impermeable, light-tight and mechanically highly resilient independent outer packaging, characterized in that more ⁇ re layers of thermoplastic film material and a layer or layer of substrate material, which are arranged in a superimposed relationship and laminated together, as well as a layer of thermoplastic films ⁇ material which is arranged in a related relationship, wob ei ei ne non-permanent Ver dependent on later application of force on the composite film Bond between the layers.
  • the production process of the multi-layer film is in particular only effected by using adhesion or by using adhesion promoter.
  • the invention also relates to a bag which is produced from a composite film according to the invention and which looks attractive on the outside, but which is known to be shrunk on the inside in the case of vacuum packaging and which looks attractive when the outside of the bag is torn or opened.
  • the specifics are To determine the properties of the separate layers of the composite film in such a way that an optimal strength of the
  • Outer layer in connection with an optimal strength of the inner layer of the bag ensure that an undesired perforation does not even occur and even if it would occur, at most only the "outer bag” will perforate, but not at the same time the "inner bag” so that an extremely effective storage the inner bag, especially the evacuated one
  • This new multi-layer film is particularly suitable for packaging milk in powder form to replace expensive conventional cylindrical tin packaging cans.
  • the intended bag packaging now enables space-saving, evacuated block packaging to be produced, namely small packaging, e.g. of 200 gr. but also large packaging, e.g. from 250 to 2,000 kg.
  • Multiple composite films according to the invention have already been subjected to tests, with small bags being run over by a truck without there being any cause for (known) perforations!
  • the packaging bag according to the invention makes the usual use of a so-called repacking unnecessary. It is now possible according to the invention that the otherwise customary, shrinkable, evacuated inner packaging is provided by the smooth, attractive outer bag, which is normally followed by the desired one
  • this new packaging is particularly suitable for storing milk powder that can be evacuated in the bag using the packaging.
  • milk powder is put in tin cans stored low vacuum and this milk powder has only a limited use-up time.
  • the new, highly gas-impermeable and highly tough multiple-composite film it is now possible to store milk powder guaranteed for at least 2 years without any quality deterioration being felt. This guarantee is basically also given for milk powder if the product is stored outside of freezer rooms in tropical countries.
  • the invention also intends a method whereby two layers which are placed opposite one another can be separated from one another using the special properties of the multiple composite film according to the invention.
  • a shrink-looking evacuated inner bag then separates from a smooth-looking outer bag.
  • the last one can thus be provided with a legible advertising imprint that is otherwise never directly applicable to vacuum packaging.
  • Figure 1 shows a first inventive five layer liemaschinesverbundfo-;
  • FIG. 2 shows a second six-layer packaging composite film, both in an exploded view.
  • the multilayer, highly tough and gas-impermeable vacuum packaging material in the figures contains a first outer layer, or film 1, and made of a thermoplastic material, which is arranged on the opposite side of an inner layer, or film 2.
  • This layer can consist of a monoaxial or biaxial film made of polyamide (nylon) or of another suitable material.
  • Layer 3 is firmly connected with a suitable material, for example aluminum foil.
  • the next layer 4 can again consist of a monoaxial or biaxial film made of polyamide (nylon) or of another suitable material.
  • the last composite layer 5 can consist of an aligned coextruded polyethylene and / or a copolymer and / or an olefin or and / or an extrudable ionomer from several layers.
  • All layers 1-5 are laminated together and form the outer composite.
  • An inner layer 6 of an aligned coextruded polymer of lower density and / or a copolymer and / or an olefin or and / or an extrudable ionomer from several layers or layers is applied to this composite by means of adhesion. This creates a loose one
  • the outer composite combination alone has an extremely significant gas barrier property, such that this part of the packaging material has a permeability rate to oxygen or another gas in the order of magnitude of 0.3 or less has, the rate in cm3 / 2 - i r -.- ⁇ ⁇ • _ .
  • the inner layer or layer has a similar gas barrier property such that this part of the packaging material has a permeability rate to oxygen or another gas in the order of magnitude of 0.5 or less.
  • the materials for the outer layer 1-5 were selected from the point of view that the packaging laminate has to ensure strength, flexibility and excellent gas impermeability in the event of damage to the inner packaging, layer 6, which in turn exhibits excellent gas impermeability and, in the event of partial damage from the outside inwards, still provides full product protection, or the entire packaging retains its shape formed under vacuum and thus remains usable.
  • the inner layers 5 and 6 can be used in any thickness, however the preferred thickness range for the small packages for these two layers 5 and 6 is approximately 0.0300 to 0.0400 mm, with approximately 0.0352 to 0.0375 mm in generally to achieve the desired properties of the Small packaging are preferred.
  • This multilayer packaging material can be processed in the usual way to form containers or packaging, preferably those which can be vacuumed, with or without addition of support gas, but can be sealed airtight.
  • the packaging material can be used to produce stable bags or sacks with a conventional tubular bag forming and filling machine with an open end, which after the contents have been introduced, e.g. Milk powder, vacuumed in a vacuum device, back-gassed if necessary, and can be sealed by heat.
  • the inner layer 6 takes over the entire atmospheric pressure since there is pressure equalization between the two layers 5 and 6 loosely connected by means of adhesion. After the pressure has been equalized, layers 1 to 5 are finally sealed with layer 6.
  • the packaging inner bag
  • the packaging is created in the packaging (outer bag), with both packaging being extremely impermeable to gas and a further outer packaging in a paper wrap or a carton is not necessary.
  • thermoplastic film material which extends the inner layer of substrate material (aluminum foil), are thus laminated tightly with one another, while the inner layer is not laminated to the outer composite, but is only bonded by means of adhesion, so that one deliberate detachment from the carrier film can take place after vacuuming.
  • adhesion promoters of any suitable type can be applied if they are only useful.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wrappers (AREA)
  • Laminated Bodies (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)

Abstract

Les sacs tubulaires sous vide, par exemple pour denrées alimentaires sous forme de poudre, sont généralement emballés dans une feuille d'aluminium et un nouvel emballage est ensuite absolument nécessaire en raison de l'aspect plissé de ce genre d'emballage. Une nouvelle feuille composite est caractérisée par le fait que deux couches posées l'une contre l'autre sont reliées mutuellement par adhésion, mais cette liaison peut cependant être rompue immédiatement. Cette condition peut être réalisée dès que le sac a été évacué de la manière habituelle, le sac intérieur se retrécit autour de la marchandise et pendant cette opération le sac extérieur se détache par la suppression de l'adhésion qui jusqu'alors a été maintenue; ensuite les couches ci-dessus décrites sont séparées. Le résultat obtenu est un sac extérieur plutôt lisse, alors que le sac intérieur plissé, qui est invisible, reste enfermé à l'intérieur du sac extérieur. Ce dernier peut donc être utilisé comme nouvel emballage surtout dans les cas où les feuilles composites ne peuvent en aucune manière être distinguées d'un sac habituel avant son utilisation comme sac d'emballage lorsqu'il est mis sous vide.
PCT/EP1986/000632 1985-10-25 1986-10-27 Feuille composite pour emballages Ceased WO1987002647A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DK323387A DK323387A (da) 1985-10-25 1987-06-25 Sammensat folie til emballeringsformaal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8502931A NL193058C (nl) 1985-10-25 1985-10-25 Gelaagde foelie.
NL8502931 1985-10-25

Publications (1)

Publication Number Publication Date
WO1987002647A1 true WO1987002647A1 (fr) 1987-05-07

Family

ID=19846767

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1986/000632 Ceased WO1987002647A1 (fr) 1985-10-25 1986-10-27 Feuille composite pour emballages

Country Status (7)

Country Link
EP (1) EP0243430A1 (fr)
JP (1) JPS63501556A (fr)
AU (1) AU606041B2 (fr)
DE (1) DE8690142U1 (fr)
DK (1) DK323387A (fr)
NL (1) NL193058C (fr)
WO (1) WO1987002647A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115924322A (zh) * 2022-12-20 2023-04-07 泰安市海之润食品有限公司 一种大块固体熟食类软罐头的蒸煮袋

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4120326C2 (de) * 1991-06-20 1994-04-07 Fritz Braitsch Mit Kunststoff-Folien beschichtete blattförmige Bahn mit einer Papierbahn als Trägermaterial
DE4121843A1 (de) * 1991-07-02 1993-01-07 Hans Schleicher Gebindeeinheit
DE19500766C2 (de) * 1995-01-13 2000-10-05 M & W Verpackungen Gmbh Verfahren zur Herstellung einer Folie mit hoher Durchstoßfestigkeit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1453621A (en) * 1972-11-10 1976-10-27 Toyo Seikan Kaisha Ltd Sterilised food packages
EP0053522A2 (fr) * 1980-12-03 1982-06-09 Bridgestone Tire Company Limited Bandage pneumatique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4085244A (en) * 1976-02-10 1978-04-18 Champion International Corporation Balanced orientated flexible packaging composite
US4224367A (en) * 1978-05-22 1980-09-23 Scholle Corporation Multiple ply packaging material comprising outer plies sealed around an inner ply
ATE35960T1 (de) * 1984-05-03 1988-08-15 Crescent Holding Vakuumverpackung mit glatter aussicht.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1453621A (en) * 1972-11-10 1976-10-27 Toyo Seikan Kaisha Ltd Sterilised food packages
EP0053522A2 (fr) * 1980-12-03 1982-06-09 Bridgestone Tire Company Limited Bandage pneumatique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115924322A (zh) * 2022-12-20 2023-04-07 泰安市海之润食品有限公司 一种大块固体熟食类软罐头的蒸煮袋

Also Published As

Publication number Publication date
NL193058B (nl) 1998-05-06
AU606041B2 (en) 1991-01-31
DK323387D0 (da) 1987-06-25
AU6593686A (en) 1987-05-19
NL8502931A (nl) 1987-05-18
JPS63501556A (ja) 1988-06-16
DK323387A (da) 1987-06-25
NL193058C (nl) 1998-09-08
DE8690142U1 (de) 1989-04-20
EP0243430A1 (fr) 1987-11-04

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