EP2076381A1 - Sachet à fond plat constitué d'une feuille multicouche - Google Patents

Sachet à fond plat constitué d'une feuille multicouche

Info

Publication number
EP2076381A1
EP2076381A1 EP07818452A EP07818452A EP2076381A1 EP 2076381 A1 EP2076381 A1 EP 2076381A1 EP 07818452 A EP07818452 A EP 07818452A EP 07818452 A EP07818452 A EP 07818452A EP 2076381 A1 EP2076381 A1 EP 2076381A1
Authority
EP
European Patent Office
Prior art keywords
pet
film
stand
layer
siox
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
EP07818452A
Other languages
German (de)
English (en)
Inventor
Markus Bevilacqua
Sven Jacobsen
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.)
3A Composites International AG
Original Assignee
Alcan Technology and Management Ltd
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 Alcan Technology and Management Ltd filed Critical Alcan Technology and Management Ltd
Priority to EP07818452A priority Critical patent/EP2076381A1/fr
Publication of EP2076381A1 publication Critical patent/EP2076381A1/fr
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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation

Definitions

  • Stand-up pouch made of a multilayer film
  • the invention relates to a stand-up pouch made of a multilayer film.
  • Stand-up pouches composed of side and bottom laminate or standing or standing pouches (hereinafter generally referred to as stand-up pouches) are known.
  • the shape of the bottom seal is a radius in the so-called "do-pack" bag form, while other bottom seals are, for example, K-shaped or have other shapes, with the effect that the bottom of the bag forms a stagnant floor for stand-up pouches are usually adhesive-laminated, and / or extrusion-laminated or - coated
  • the outer layer usually consists of an oriented plastic film or paper and serves as a print carrier and / or carrier for a barrier coating, offers a glossy surface and a good Ther
  • a further oriented or unoriented polymer film or a metallic foil as barrier layer carrier or as a layer for improving mechanical properties, such as strength, in the middle is optionally present - or Cast method produced, mono- or co extruded, heat-sealable film.
  • the sealing layer is partially applied as an extrusion film on the inside of the composite.
  • solvent-based primers which complicate the process from the raw materials logistics, as a primer necessary.
  • a major disadvantage compared to the adhesive laminating is a significant limitation of the sealing film functionality, as can be achieved, for example, with coextruded cast or blown films. It would therefore be desirable to have a process which produces a composite structure exclusively from the melt in one operation, without having to handle raw materials from the solution.
  • the prepackaging properties are achieved by appropriate combination of layers in terms of placement and thickness, with the variation margin in the area of oriented films, e.g. in terms of available thicknesses and versatility.
  • biaxially oriented PET films having a thickness of less than 12 .mu.m can not be produced sufficiently economically using conventional methods.
  • Biaxially stretched polymer films can be made, inter alia, by blown film extrusion to form two or three bubbles.
  • double bubble (2B) process and “triple bubble (3B) process” are used.
  • the blown film extrusion explained below 3 bubbles or “triple bubble process” is also referred to herein as the 3B process, and the films prepared by the 3B process are also referred to as 3B films.
  • a polymer mass is extruded as a monolayer or multilayer film through a ring die into a thick tube, calibrated to a precise diameter upon exiting the die, and then immediately quenched with water.
  • the tube is heated to a suitably selected stretching temperature and inflated in a further stage to form a second bubble between two pairs of withdrawal rollers to expand the bubble diameter again with air or other suitable gas and thereby stretched in the transverse direction or transverse direction.
  • the stretching in the longitudinal direction or machine direction takes place by setting a different rotational speed of the take-off rolls delimiting the bubble in its longitudinal direction.
  • the tube expanded into a bladder is thus conveyed at a higher speed in comparison to the extrusion speed, so that its orientation in the transverse or machine direction is maintained.
  • the thus formed, unilaterally still open bag is airtight after filling the goods to be packaged over a second Heisshielelung and then shrunk under the action of heat until the bag film completely rests against the contents.
  • the degree of shrinkage of the multilayer films is typically about 20 to 60%.
  • the invention has for its object to provide a stand-up pouch of the type mentioned, in which the multilayer film without the methods of the prior art adhering disadvantages can be produced.
  • a stand-up pouch should be able to be produced from a multilayer film which has the abovementioned properties owing to its layer number, sequence and thickness.
  • the aim is a practically negligible shrinkage.
  • the allowable maximum shrinkage degree of the 3B film is at most 1%.
  • the 3B films of the multilayer films used according to the invention are thermally stabilized or fixed. This ensures that the films practically do not shrink during further possible processing steps, such as laminating or printing or during a subsequent sterilization process, in which high temperatures sometimes act on the films for a relatively long time.
  • a significant advantage of the 3B films used according to the invention in comparison to conventionally produced films or laminates is that the 3B coextrusion process can be used to produce films with substantially smaller thicknesses of the biaxially oriented layers, which leads to substantial material savings.
  • films with a biaxially oriented PET layer of a thickness of, for example, 2 to 12 ⁇ m are possible.
  • Another important advantage results from the combination of two thin biaxially oriented layers with good rigidity, such as e.g. biaxially oriented PET, with a cheap intermediate layer as spacer or spacer. In this way, it is possible to inexpensively produce rigid films which are necessary for achieving a sufficient standing capability of the bag, with great material savings.
  • SiO x ceramic coating of SiO x (barrier layer)
  • AI2O 3 ceramic coating of Al 2 O 3 (barrier layer) i printing ink, printing (ink)
  • the 3B film may be coated with at least one further layer, in particular in the curtain coating process or via a slot die coating process (Slot Die Coating).
  • the 3B film tube produced by the 3B process is Position cut, wound on a roll, and can be cut in a further step in-or offline to the required width, be processed directly to stand-up pouches.
  • additional coating, printing and / or another additional process step may be necessary to achieve technological and appearance properties.
  • the 3B film tube produced by the 3B method is cut after production into a width required for carrying out the further method step, wound onto a roll, fed to the method step, and then further processed directly into stand-up pouches.
  • the 3B film or the at least one further layer can in particular be metallized with aluminum or coated with stainless steel or another metal.
  • the 3B film or the at least one further layer may be ceramic, in particular coated with SiO x or with Al 2 O 3 .
  • the 3B film or the at least one further layer can be printed and / or provided with a thermal protective varnish.
  • the 3B film or the at least one further layer can consist of completely biodegradable polymers.
  • the 3B film preferably comprises at least one heat-sealable layer comprising a material selected from the group of polyolefins (PO), polyamides (PA), Polyesters and their copolymers, as well as the ionomers (ION). It is also possible to use hot melt adhesives based on EVA and other bases, as well as blends of the abovementioned materials.
  • Typical core layers used are polyamides, polyesters, polyolefins and their copolymers, cycloolefinic polymers, and also the adhesion promoters based on MAH, acrylate and carboxylic acids.
  • barrier layers EVOH, PVOH or aromatic polyamides can be used.
  • Self-adhesive hot-melt adhesive layers made of SBS, SIS, SEBS and an adhesive resin can also be used.
  • the outer layer it is typically possible to use materials from the groups of the polyesters, polyamides, polyolefins and their copolymers, which have sufficient thermoresistance and are suitable for composition and additization for vacuum coating.
  • a 3B film suitable for this field of application may, for example, have the layer structure specified for the inventive films of group 1 in Table 1.
  • a 3B film suitable for this field of application may, for example, have the layer structure given in Table 1 for the films according to the invention of Group 2.
  • the range of suitable 3B films may have the layer structure specified for the inventive films of group 3 in Table 1.
  • the layer structures are characterized by a high taste neutrality compared to the conventional structures, which have an unpleasant PE taste.
  • a 3B film suitable for this field of application may have, for example, the layer structure specified for the inventive films of group 4 in Table 1.
  • a 3B film suitable for this field of application may, for example, have the layer structure specified for the films according to the invention of group 5 in Table 1.
  • the 3B process allows a film build from fully biodegradable raw materials.
  • Table 1 compares the prior art laminates or films used for packaging products in stand-up pouches with the laminates or films of the invention. Depending on the type, the moisture content, the shelf life and other product properties, different requirements for the packaging materials arise, which can be divided into the following groups:
  • Group 1 Heat-sterilized products
  • Group 2 Hot-filled products
  • Group 3 Highly sensitive products
  • Group 4 Dry products, sugar confection
  • Group 5 Alcoholic products

Landscapes

  • Wrappers (AREA)

Abstract

L'invention concerne un sachet à fond plat constitué d'une feuille multicouche. Au moins une partie des couches de cette feuille multicouche se présente sous la forme d'une feuille 3B ayant un degré de rétrécissement maximal de 2 %.
EP07818452A 2006-09-28 2007-09-26 Sachet à fond plat constitué d'une feuille multicouche Ceased EP2076381A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07818452A EP2076381A1 (fr) 2006-09-28 2007-09-26 Sachet à fond plat constitué d'une feuille multicouche

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06405410A EP1905575A1 (fr) 2006-09-28 2006-09-28 Sachet tenant debout en film multicouche
EP07818452A EP2076381A1 (fr) 2006-09-28 2007-09-26 Sachet à fond plat constitué d'une feuille multicouche
PCT/EP2007/008368 WO2008037447A1 (fr) 2006-09-28 2007-09-26 Sachet à fond plat constitué d'une feuille multicouche

Publications (1)

Publication Number Publication Date
EP2076381A1 true EP2076381A1 (fr) 2009-07-08

Family

ID=37908241

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06405410A Withdrawn EP1905575A1 (fr) 2006-09-28 2006-09-28 Sachet tenant debout en film multicouche
EP07818452A Ceased EP2076381A1 (fr) 2006-09-28 2007-09-26 Sachet à fond plat constitué d'une feuille multicouche

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP06405410A Withdrawn EP1905575A1 (fr) 2006-09-28 2006-09-28 Sachet tenant debout en film multicouche

Country Status (2)

Country Link
EP (2) EP1905575A1 (fr)
WO (1) WO2008037447A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2233285A1 (fr) * 2009-03-23 2010-09-29 3A Technology & Management AG Film multicouche pour le conditionnement de fromage ferme
JP4743326B2 (ja) * 2010-01-15 2011-08-10 横浜ゴム株式会社 パンク修理液の回収方法
JP5910834B2 (ja) 2010-06-28 2016-04-27 ダウ グローバル テクノロジーズ エルエルシー スタンディングパウチに使用するための単一ポリマーフィルム構造体
EP2497636A1 (fr) 2011-03-11 2012-09-12 Deutsche SiSi-Werke Betriebs GmbH Système composite amélioré pour emballages
DE102012006398A1 (de) * 2012-03-30 2013-10-02 Maria Soell High Technology Films Gmbh Eine Schutzverpackung aus aufblasbaren Luftpolsterelementen
BR112016009511B8 (pt) * 2013-11-01 2022-10-04 Cryovac Inc Filme termoencolhível de multicamada, artigo de embalagem, processo de embalagem e processo para produzir um filme anular termoencolhível
DE102017108389A1 (de) * 2017-04-20 2018-10-25 Leoni Kabel Gmbh Barriereschicht gegen Migration eines Stoffes, elektrischer Leiter, Schlauch, Verfahren zum Fertigen eines beschichteten Kabels oder eines beschichteten Schlauches und Verwendung von Polyethylenfuranoat als Barriereschicht

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3803678A1 (de) * 1988-02-06 1989-08-17 Hoechst Ag Transportbequeme folienstandverpackung fuer fliessfaehige fuellgueter
DE3805054A1 (de) * 1988-02-18 1989-08-31 Hoechst Ag Transportbequemes folienstandbeutelsammelgebinde
ITMI991553A1 (it) * 1999-07-14 2001-01-14 Tecno Coating Engineering A R Film plastico termoretraibile multistrato con caratteristiche barriera
DE20002881U1 (de) * 2000-02-17 2000-04-20 Van Leer Packaging (Deutschland) GmbH & Co. KG 4P Verpackungen Ronsberg, 87671 Ronsberg Verpackung für ein fließfähiges Füllgut
ITMI20022159A1 (it) * 2002-10-11 2004-04-12 Tecno Coating Engineering S R L Pellicola multistrato termoretraibile avente barriera all'ossigeno ed al vapore acqueo, una migliorata resistenza meccanica e buone caratteristiche ottiche e ridotto effetto curling.
US20040173491A1 (en) * 2003-03-07 2004-09-09 Buelow Duane H. Packages made from thermoplastic multilayer barrier structures
ITMI20031203A1 (it) * 2003-06-13 2004-12-14 Tecno Coating Engineering S R L Pellicola multistrato termoretraibile avente barriera all'ossigeno e al vapore acqueo, una migliorata resistenza meccanica e buone caratteristiche ottiche e ridotto effetto curling

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008037447A1 *

Also Published As

Publication number Publication date
EP1905575A1 (fr) 2008-04-02
WO2008037447A1 (fr) 2008-04-03

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