High temperature steaming strippable membrane

A high-temperature cooking and easy-peeling technology, used in flexible coverings, packaging, layered products, etc., can solve problems such as the inability to meet the technical requirements of sterilization at 121°C for 30 minutes, and achieve good heat-sealability, wide application range, Fast heat sealing effect

Inactive Publication Date: 2009-02-11
李长青 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Neither the jelly lid film nor the soft can packaging film currently used in my country can meet the technical requirements for sterilization at 121°C for 30 minutes

Method used

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  • High temperature steaming strippable membrane
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Embodiment Construction

[0012] The invention is a high-temperature cooking easy-peeling film, which is composed of three layers of polymer materials, and the outer layer is modified polypropylene (PP) 1, which is a heat-sealing layer with high strength, high transparency and high temperature resistance; The middle layer is multi-component copolymerized polypropylene (PP) 2, which is an enhanced layer with toughening function, adhesive function and heat-sealing strength; the inner layer is ethylene-vinyl acetate copolymer 3, which is an easy-peeling layer with high temperature resistance and stable chemical properties. layer. When packaging jelly or soft canned food, the inner layer of the present invention, that is, the three layers of ethylene-vinyl acetate copolymer, is in contact with the packaged food, so that the release film can be easily separated from the food when the food is taken out. It adopts the world's most advanced modified polypropylene (PP) polymer material and ethylene-vinyl acetat...

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Abstract

The invention is a high temperature-cooked easy-to-peel membrane, extruded of three layers of high molecular materials, where the outer layer is of modified polypropylene, the intermediate layer is of multielement copolypropylene, and the inner layer is of ethylene-vinyl acetate copolymer, and all of them have no deposits, and have very good bioinertia but no toxicity, and are used to package; the sterilizing temperature can reach 121DEG C but it can not deform in 30 min, having wide application range, assuring the stored jelly or soft can can not rot and go bad, and meeting sterile requirements (F0>8); it has good heat sealing property, reliable sealing property, and able to fast heat-seal and easy to peel; and it maximumly assures product sanitation; in the use and recovery courses, it does not produce toxic matters, and has no pollution, belonging to environmental-protection product; the shelf life of multilayer coextruded transfusion membrane or soft bag is three years.

Description

【Technical field】 [0001] The invention relates to a heat-sealing lid film and a packaging film for packaging various jellies and soft cans. 【Background technique】 [0002] The high-temperature cooking easy-peeling film is mainly used for jelly lid film and soft can packaging film. This film is mainly supplied to packaging color printing factories. The packaging color printing factory performs lamination, cutting, and post-printing production according to the requirements of jelly factories and food factories. Jelly lid film and soft can packaging film end products. At present, most of the jelly cover films and soft can packaging films used in domestic jelly factories and food factories are composite films such as ordinary polypropylene, polyester, nylon and polyethylene. These films are packaged with jelly and food. Pasteurization technology is used. Low-temperature distillation (70-90°C for 30 minutes), the sterilization method at this temperature can only kill all pathoge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/30B32B27/08B32B27/32B65D65/40
Inventor 李长青周亚君
Owner 李长青
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