Multilayered two-dimensional or tubular food casing or film

A multi-layer flake, food technology, applied in multi-layer casings, synthetic resin layered products, layered products, etc., can solve the problem of not providing moisture isolation shielding layer

Active Publication Date: 2009-09-02
库恩设备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this article also does not provide a shield to keep moisture out

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0010] According to the present invention, a multi-layered sheet or tubular food casing or food film for food packaging, produced in particular by the nozzle blow-drawing method and biaxially stretched in a triple foaming process, such as shrink Films, sealable films, roll-to-roll films, etc., which for the first time feature a laminated structure comprising at least seven layers counted from outside to inside.

[0011] Counting from the outside, the first layer contains PET as a layer component, the second layer contains an adhesion promoter, the third layer contains an ionomer, the fourth layer contains an adhesion promoter, the fifth layer contains EVOH, and the sixth layer contains an adhesion promoter , the seventh layer from the outside - and also the innermost layer - comprises a polyolefin, preferably polyethylene.

[0012] EVOH advantageously forms the desired oxygen barrier. Ionomers ensure the desired mechanical properties. Polyester fibers ensure excellent optica...

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PUM

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Abstract

The present invention proposes for the first time a two-dimensional or tubular food casing or film with an at least seven-layered laminated structure, which has an EVOH layer as an oxygen barrier and in which the outer layer is formed by a high-temperature-resistant material such as PET, which apart from outstanding appearance-related properties also makes much higher further processing speeds (numbers of cycles) possible than previously known.

Description

technical field [0001] According to the preamble of claim 1, the invention relates to a multilayer sheet or tubular food casing or food film for food packaging manufactured by nozzle blow-drawing and biaxially stretched by triple foaming, e.g. Shrink bags, sealable films, roll-up films, etc. Background technique [0002] In practice, such multilayer tubular or sheet packaging films have been put into use in the form of 5 or 7 layer films. [0003] Thus, for example, EP 0 236 099 B2 discloses a multilayer tubular packaging film for food with up to 7 layers - a so-called packaging oxygen barrier film. However, the disclosed film has the disadvantage that the outer layer consists of polyolefin (abbreviated as PO), which, although it provides good protection against moisture for the inner layer, does not have a significantly improved performance compared to the inner layer (sealing layer). temperature resistance. [0004] EP 0 476 836 B1 discusses a 6-layer packaging film whi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A22C13/00
CPCA22C2013/0063A22C2013/004A22C2013/0059B32B27/08A22C2013/0083A22C13/0013A22C2013/0053B32B27/32B32B27/36Y10T428/1324Y10T428/1328Y10T428/1341Y10T428/31725Y10T428/31786Y10T428/31797A22C13/00B32B1/08B32B27/12
Inventor J·希夫曼
Owner 库恩设备制造有限公司
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