WO2006073342A1 - Procede de fabrication d'un stratifie d'emballage fin et procede de formation d'un receptacle d'emballage - Google Patents

Procede de fabrication d'un stratifie d'emballage fin et procede de formation d'un receptacle d'emballage Download PDF

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Publication number
WO2006073342A1
WO2006073342A1 PCT/SE2005/001934 SE2005001934W WO2006073342A1 WO 2006073342 A1 WO2006073342 A1 WO 2006073342A1 SE 2005001934 W SE2005001934 W SE 2005001934W WO 2006073342 A1 WO2006073342 A1 WO 2006073342A1
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WO
WIPO (PCT)
Prior art keywords
thermoplastic material
layer
laminate
heat
sealable
Prior art date
Application number
PCT/SE2005/001934
Other languages
English (en)
Inventor
Peter Öhman
Original Assignee
Tetra Laval Holdings & Finance S.A.
Ryden Pettersson, Carina
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 Tetra Laval Holdings & Finance S.A., Ryden Pettersson, Carina filed Critical Tetra Laval Holdings & Finance S.A.
Publication of WO2006073342A1 publication Critical patent/WO2006073342A1/fr

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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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • 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
    • 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
    • B32B27/10—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 paper or cardboard
    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • 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
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
    • 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
    • B32B2250/00—Layers arrangement
    • B32B2250/04—4 layers
    • 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
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/102—Oxide or hydroxide
    • 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
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/107—Ceramic
    • B32B2264/108—Carbon, e.g. graphite particles
    • 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
    • B32B2274/00—Thermoplastic elastomer material
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/31—Heat sealable
    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B32B2307/4026—Coloured within the layer by addition of a colorant, e.g. pigments, dyes
    • 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
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/41—Opaque
    • 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
    • B32B2307/71—Resistive to light or to UV
    • 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
    • B32B2439/40—Closed containers
    • B32B2439/46—Bags
    • 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
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • B32B37/153—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state at least one layer is extruded and immediately laminated while in semi-molten state
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
    • B32B37/20—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of continuous webs only
    • B32B37/203—One or more of the layers being plastic
    • B32B37/206—Laminating a continuous layer between two continuous plastic layers

Definitions

  • the present invention relates to a method of producing a thin and heat-sealable paper-based packaging laminate for a packaging container for a liquid or flowing food product.
  • the invention is especially directed on the production of such a laminate that is cost-effective yet sufficiently strong and durable, and that can be formed and sealed into a packaging container of simple and flexible shape.
  • it should have sufficient barriers for food products, such as a light-barrier for light-sensitive food products, and an outer appearance that is acceptable from a customer point of view.
  • the laminate formed by the method is especially well adapted for containers for ultra high temperature (UHT) treated food products or aseptic food packaging containers.
  • UHT ultra high temperature
  • Such containers can be of aseptic type and/or of the type intended for ultra high temperature (UHT) treated food products or others. They must also be sufficiently cost-effective for their intended market, and hence the packaging laminate of which they are formed should be beneficially thin and cost-effective. It does not have to be able to be formed into a self-supporting shape with dimension and grip stability, but may simply be formed into a simple and flexible shape, such as a pillow-shape e.g. However, one thing that it must have is an adequate light-barrier, to prevent a light-sensitive food product in the container from being spoiled and/or exhibiting off-flavour.
  • UHT ultra high temperature
  • having a white pigment in the outermost heat-sealable layer means that a printed design must be positioned on top of that plastic layer, whereby advanced or more environmentally unfriendly printing methods have to be used. Also, a protective lacquer needs to be applied on top of the printed design to protect it from scratches and wear during handling. Moreover, if there are flaws in the print, the entire laminate has to be discarded which means unnecessary waste of material.
  • the present invention has for its object to provide a method of producing a thin and heat-sealable paper-based packaging laminate for a packaging container for a liquid or flowing food product, such as a milk product, which laminate is sufficiently thin and thereby cost-effective, to be competitive, yet having adequately good properties in terms of hygiene, sealability, strength, light-barrier and appearance of a packaging container formed from the laminate. Also, it should be beneficial from a converting point of view, avoiding or at least diminishing the problems in that connection, mentioned above.
  • the invention also relates to a method of forming a packaging container from such a laminate.
  • a dark pigment preferably a black pigment such as carbon black
  • a white pigment such as titanium dioxide (TiO 2 )
  • the laminate and the container formed thereof achieves an acceptably white appearance despite the inner dark pigmented layer.
  • thermoplastic laminate layer with white pigment included therein is directly bonded to the paper layer, i.e. without any intermediate layers.
  • a special advantage of including the white pigment solely in the laminate layer, and in no other layers, is that a printed design can be positioned directly on the paper layer, where it is protected but not concealed by the fully transparent outer heat-sealable thermoplastic layer. Also, less costly and more environmentally friendly printing techniques can be used when printing directly on the paper layer, such as flexography with water-based ink. Moreover, there will be less depositing of white pigment on process equipment than would be the case if the white pigment was included in the outer heat-sealable layer, and even if the converting line is temporarily shifted to produce a second laminate remaining white pigment will not be a problem since it will be positioned in a more central layer of the laminate, beneath the paper layer, were it is less visible than in an outer layer.
  • said outer heat-sealable layer consists of an extruded polyethylene material with a density of 880-970 kg/m 3 , preferably 910-930 kg/m 3 . It may have a weight of 8-25 g/m 2 , preferably 10-20 g/m 2 , and even more preferred 10-15 g/m 2 . It may be composed of several preferably co-extruded part-layers, whereof at least the outermost is heat-sealable.
  • said thin paper layer consists of bleached kraft paper having a weight of 30-80 g/m 2 , preferably 40-70 g/m 2 , and even more preferred 40-60 g/m 2 . It has a basis weight and strength sufficient, together with the other layers, to give an adequate laminate strength. Most preferred, a paper layer of about 50 g/m 2 is used, which gives a number of advantages over an even thinner paper layer.
  • step (c) above is preceded by a step of surface activation treatment of the thin paper web, preferably by flame or corona treatment.
  • said thermoplastic of the laminate layer is a polyethylene material with a density of 880-970 kg/m 3 , preferably 910-930 kg/m 3 . It may have a weight of 8-50 g/m 2 , preferably 10-40 g/m 2 , and even more preferred 15-30 g/m 2 .
  • the white pigment is included in this layer at a content of at least 2 %, preferably at least 5 %, and even more preferred at least 8 %, but 20 %, preferably 15 %, and even more preferred 12 % at the most, by weight.
  • said white pigment is titanium dioxide, although other types of white pigment are conceivable.
  • the layer Since it is difficult to include larger contents of the white pigment in the thermoplastic laminate layer, the layer must be made thicker, at the upper end of the above given ranges, if there is a need of a large total amount of white pigment to conceal the dark pigment in the inner heat-sealable layer.
  • the laminate layer may be composed of several preferably co-extruded part-layers, in which case the white pigment may be included in one or more, or all, of these part-layers.
  • the inner heat-sealable layer suitably consists of a thermoplastic material in the group that consists of a polyethylene material, preferably with a density of 880- 970 kg/m 3 , preferably 910-930 kg/m 3 , a polypropylene, an ethylene vinyl acetate and a thermoplastic acrylic acid co-polymer (neutralised or non-neutralised). It may be composed of several preferably co-extruded part-layers, whereof at least the innermost is heat-sealable.
  • the term "innermost” refers to the layer that is outermost on the inside of the laminate, i.e. the layer that will be in contact with the contents of the packaging container formed there from.
  • the inner heat-sealable layer may have a total thickness, depending on thermoplastic quality, of 10-45 g/m 2 , preferably 13-35 g/m 2 , and even more preferred 20-30 g/m 2 . It suitably includes a content of dark pigment of 0.2-2 g/m , preferably 0.2-1 g/m , and even more preferred 0.3-0.8 g/m 2 . However, since the dark pigment is not very expensive, and since it is quite easily included in the thermoplastic material, it is conceivable that it may be included at even larger contents, such as up to 3 or 4 g/m 2 . Suitably, said dark pigment is carbon black. In case the inner heat-sealable layer is composed of several part-layers, the dark pigment may be included in one or more, or all, of these part-layers.
  • the inner heat-sealable layer is pre-manufactured prior to its incorporation in the packaging laminate, i.e. it constitutes a pre-manufactured film, suitably made by (co-)extrusion blowing, (co-)extrusion casting or (co-)extrusion coating.
  • a blown or cast film has the advantage over an extruded layer that it has better strength and less oxidative degradated materials, because it is made at a lower temperature, and that it has a more controlled machine and cross directional properties.
  • Advantages of using a pre-manufactured film as the inner heat-seal able layer, and using a pre-manufactured paper layer as a bulk layer in the thin laminate according to the invention are that it is easy to change film and/or paper quality, e.g. food contact layer grade, in the converting line, if needed, and that there are somewhat less demands on the accuracy of the extrusion thickness of the extruded layers (the outer heat-sealable layer and the laminate layer).
  • the packaging laminate has a total weight of 60-180 g/m 2 , preferably 70-150 g/m 2 , and even more preferred 75-125 g/m 2 .
  • the invention also relates to a method of forming a packaging container with a liquid food content, from such a packaging laminate. It may for example be formed to have the shape of a flexible pillow with one longitudinal seal and two transversal seals at opposing ends of the container.
  • Fig. 1 is showing a cross-section of a laminate according to the invention
  • Fig. 2 shows a packaging container, formed from the laminate in Fig. 1,
  • Fig. 3 shows a converting line for production of the laminate in Fig. 1.
  • the paper layer 12 is made of bleached kraft paper and has a weight of about 50 g/m 2 .
  • the extruded outer heat- sealable thermoplastic layer 13 will constitute the outside of a packaging container formed from the laminate 10 and is made of low density polyethylene (LDPE), and has a weight of about 12 g/m 2 .
  • the inner heat-sealable thermoplastic layer 14 will be in contact with the food in the packaging container formed from the laminate 10. It is a film of extrusion blown linear low density polyethylene (LLDPE), and has a weight of 23 g/m 2 . Of that weight, 0.4 g/m 2 is carbon black, which gives layer 14 a black appearance and acts as a light-barrier.
  • the black colour of layer 14 is concealed, as seen from the outside of the laminate 10, i.e. as seen from layer 13, by the extruded laminate layer 15.
  • the laminate layer 15 is made of low density polyethylene (LDPE), and has a weight of about 17 g/m 2 . Of that weight, 12 % is TiO 2 , which gives layer 15 a white and desirably opaque appearance, hence concealing the black inner heat-sealable thermoplastic layer 14.
  • LDPE low density polyethylene
  • Fig. 2 shows a packaging container 20, made by a form-fill-seal process of the laminate shown in Fig. 1. It is of flexible pillow-shape, with one longitudinal seal 22 and two transversal seals 24a, 24b at opposing ends of the container.
  • Fig. 3 schematically shows a converting line 40 for production of the laminate in Fig. 1.
  • the thin paper web 12a that is to constitute the thin paper layer 12 in the packaging laminate, is unwound from a first roll 41 and introduced in the converting line 40.
  • the paper web 12a is subjected to surface activation, on one or both sides thereof, by flame or corona treatment 43. (In Fig. 3, surface activation is shown on one side only.)
  • the film 14a consisting of a heat-sealable thermoplastic material having a dark pigment included therein, is unwound from a second roll 42. This firm will constitute the inner heat-sealable layer 14 of the packaging laminate, as shown in Fig. 1. It is preferably a film of extrusion blown linear low density polyethylene (LLDPE), including said dark pigment.
  • LLDPE linear low density polyethylene
  • the thin paper web 12a and the film 14a consisting of a heat-sealable thermoplastic material having a dark pigment included therein, are united in a first nip 44, while a laminate layer 15 (see Fig. 1) is extruded 45 them between.
  • the laminate layer 15 consists of a thermoplastic material, preferably a low density polyethylene (LDPE), having a white pigment included therein. Its content of white pigment is suitably achieved by dry blending of the white pigment and the thermoplastic material in the hopper 46 that feeds the extruder 45.
  • the extrusion lamination preferably takes place at a temperature of 300-340 0 C, suitably about 320 °C.
  • the outer heat-sealable layer 13 (see Fig.

Landscapes

  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention porte sur un procédé de fabrication d'un stratifié d'emballage fin (10) pour un réceptacle d'emballage (20) destiné à contenir un produit alimentaire liquide ou fluide. Ce procédé consiste à: (a) dérouler une bande de papier fin (12a) d'un premier rouleau; (b) dérouler, d'un second rouleau, un film (14a) constitué d'un matériau thermoplastique thermoscellable incluant un pigment noir; (c) faire passer par unité la bande de papier fin (12a) et le film (14a) constitué d'un matériau thermoplastique thermoscellable, dans un premier écartement, tout en extrudant une couche de stratifié (15) constituée d'un matériau thermoplastique incluant un pigment blanc, entre la bande de papier fin (12a) et le film (14a) constitué d'un matériau thermoplastique thermoscellable; (d) extruder, dans un second écartement, une couche thermoscellable externe (13) constituée d'un matériau thermoplastique, sur une face opposée de la bande de papier fin (12a). L'invention porte également sur un procédé de formation d'un réceptacle d'emballage (20) à partir du stratifié.
PCT/SE2005/001934 2005-01-03 2005-12-16 Procede de fabrication d'un stratifie d'emballage fin et procede de formation d'un receptacle d'emballage WO2006073342A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0500013-8 2005-01-03
SE0500013A SE0500013D0 (sv) 2005-01-03 2005-01-03 A method of producing a thin packaging laminate and of forming a packaging container

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WO2006073342A1 true WO2006073342A1 (fr) 2006-07-13

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WO (1) WO2006073342A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015028066A1 (fr) * 2013-08-29 2015-03-05 Tetra Laval Holdings & Finance S.A. Stratifié d'emballage et son contenant d'emballage
US9732474B2 (en) 2015-05-29 2017-08-15 International Paper Company Hydrophobic coated paper substrate for polymer emulsion topcoats and method for making same
EP3290206A1 (fr) * 2016-08-30 2018-03-07 Mondi AG Procede de fabrication d'un produit composite feuilles/tissu en matiere plastique, composite feuilles/tissu en matiere plastique et sac d'emballage fabrique a partir d'un composite feuilles/tissu en matiere plastique

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993002862A1 (fr) * 1991-07-26 1993-02-18 Elopak Systems Ag Article lamine et procede de fabrication
EP0676282A1 (fr) * 1992-12-28 1995-10-11 Nihon Tetra Pak K.K. Materiau d'enveloppement et ses procede et appareil de production
WO1998030390A1 (fr) * 1997-01-10 1998-07-16 Elopak Systems Ag Stratifie d'emballage
WO2001076976A1 (fr) * 2000-04-10 2001-10-18 Stora Enso Oyj Materiau d'emballage thermoscellable multicouche, emballage pour aliments fabrique au moyen de celui-ci et procede d'emballage
WO2004007195A1 (fr) * 2002-07-11 2004-01-22 Stora Enso Oyj Materiau d'emballage thermoscellable et emballage pour produit ferme fabrique a partir dudit materiau
EP1431206A1 (fr) * 2001-09-27 2004-06-23 Tetra Laval Holdings & Finance S.A. Materiau d'emballage en papier destine a un aliment liquide et procede de fabrication associe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993002862A1 (fr) * 1991-07-26 1993-02-18 Elopak Systems Ag Article lamine et procede de fabrication
EP0676282A1 (fr) * 1992-12-28 1995-10-11 Nihon Tetra Pak K.K. Materiau d'enveloppement et ses procede et appareil de production
WO1998030390A1 (fr) * 1997-01-10 1998-07-16 Elopak Systems Ag Stratifie d'emballage
WO2001076976A1 (fr) * 2000-04-10 2001-10-18 Stora Enso Oyj Materiau d'emballage thermoscellable multicouche, emballage pour aliments fabrique au moyen de celui-ci et procede d'emballage
EP1431206A1 (fr) * 2001-09-27 2004-06-23 Tetra Laval Holdings & Finance S.A. Materiau d'emballage en papier destine a un aliment liquide et procede de fabrication associe
WO2004007195A1 (fr) * 2002-07-11 2004-01-22 Stora Enso Oyj Materiau d'emballage thermoscellable et emballage pour produit ferme fabrique a partir dudit materiau

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015028066A1 (fr) * 2013-08-29 2015-03-05 Tetra Laval Holdings & Finance S.A. Stratifié d'emballage et son contenant d'emballage
US9732474B2 (en) 2015-05-29 2017-08-15 International Paper Company Hydrophobic coated paper substrate for polymer emulsion topcoats and method for making same
EP3290206A1 (fr) * 2016-08-30 2018-03-07 Mondi AG Procede de fabrication d'un produit composite feuilles/tissu en matiere plastique, composite feuilles/tissu en matiere plastique et sac d'emballage fabrique a partir d'un composite feuilles/tissu en matiere plastique

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