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Barrier film and laminated packaging material comprising the film and packaging container made therefrom

A packaging material and barrier layer technology, which is applied in the field of liquid food packaging, manufacturing the packaging material, and packaging containers, can solve the problem of high manufacturing cost of the barrier film

Active Publication Date: 2020-08-07
TETRA LAVAL HLDG & FINANCE SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] All proposed barrier films of this type to date have at least one disadvantage in relation to liquid cardboard packaging for liquid food products compared to conventional aluminum foils
An important disadvantage may be the high manufacturing cost of such barrier films

Method used

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  • Barrier film and laminated packaging material comprising the film and packaging container made therefrom
  • Barrier film and laminated packaging material comprising the film and packaging container made therefrom
  • Barrier film and laminated packaging material comprising the film and packaging container made therefrom

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Embodiment Construction

[0025] The polyester contained in the barrier layer may be obtained by condensation reaction between furandicarboxylic acid or its dimethyl ester and diols such as ethylene glycol, 1,3-propanediol (trimethylene glycol) , 2-methyl-1,3-propanediol, 1,4-butanediol, diethylene glycol, neopentyl glycol, tetramethylcyclobutanediol or isosorbide.

[0026] Preferred polyesters are polyethylene furandicarboxylate (PEF) and polytrimethylene furandicarboxylate (PTF), the latter also known as polytrimethylene furandicarboxylate (PPF). These polymers may comprise further monomers, preferably selected from those above.

[0027]Barrier layers comprising such polyesters may be applied to the laminated packaging material according to the invention in the form of preformed oriented films, such as blown films or cast oriented films. Both types of films are produced by extruding a molten polyester composition into a film sheet, which is subsequently stretched into a relatively thin but stable fi...

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Abstract

The present invention relates to laminated packaging materials comprising a bulk layer of paper or paperboard or other cellulose-based material, and outer- and innermost liquid tight, heat sealable thermoplastic polymer layers, and a barrier layer, and to a method of manufacturing such laminated materials, in particular intended for liquid food packaging. The invention further relates to a packaging container comprising the laminated packaging material.

Description

technical field [0001] The present invention relates to a laminated packaging material for packaging liquid food products, the laminated packaging material comprising a body layer of paper or paperboard or other cellulose-based material; a first outermost liquid-tight heat-sealable thermoplastic layer; a second innermost liquid-impermeable heat-sealable thermoplastic layer disposed on the inner side of the body layer for direct contact with the filled food product; and a barrier layer laminated between the body layer and the second innermost layer. The invention also relates to a laminated packaging material comprising such a barrier film, in particular for liquid food packaging. [0002] Furthermore, the invention relates to a packaging container comprising or made of such a laminated packaging material. The invention also relates to a method of manufacturing the packaging material. Background technique [0003] Packaging containers of the single-use type for liquid food ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B7/12B32B23/08B32B27/08B32B27/10B32B27/16B32B27/32B32B27/36B32B37/00
CPCB32B7/12B32B23/08B32B27/08B32B27/10B32B27/16B32B27/32B32B27/36B32B27/365B32B2255/10B32B2255/26B32B2307/516B32B2307/518B32B2307/7242B32B2307/732B32B2439/40B32B2439/70B32B37/144B32B37/153
Inventor 切萨雷·洛伦泽蒂
Owner TETRA LAVAL HLDG & FINANCE SA
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