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Easy-removing cover film with high-temperature resistant polypropylene cup material function and preparation method thereof

A high-temperature-resistant and easy-to-cover technology, applied in chemical instruments and methods, decorative arts, special decorative structures, etc., can solve the problem of inability to produce heat-sealing layer films, and achieve good results, full packaging, and long shelf life.

Active Publication Date: 2013-05-22
安姆科惠州新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, only a few large foreign multinational companies have developed high-temperature-resistant polypropylene cup easy-to-open lid films by coating heat-sealing adhesives, such as Italy's B-Pack, Japan's Toray, etc., while domestic manufacturers are unable to produce heat-sealing films. Sealing film, mainly depends on foreign imports

Method used

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  • Easy-removing cover film with high-temperature resistant polypropylene cup material function and preparation method thereof
  • Easy-removing cover film with high-temperature resistant polypropylene cup material function and preparation method thereof
  • Easy-removing cover film with high-temperature resistant polypropylene cup material function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] In this embodiment, the easy-to-remove cover film with the function of high-temperature-resistant polypropylene (PP) cup material is as follows: figure 1As shown, its structure from outside to inside is: 1-printing layer polyethylene terephthalate film (PET); 2-benzene-free polyurethane ink layer (INK); 3 and 5-polyurethane adhesive (AD ); 4- barrier nylon film (NY); 6- heat-sealing layer cast polypropylene film (CPP).

[0041] Among them, the innermost heat-sealing layer film CPP such as figure 2 As shown, the layer is produced by a three-layer co-extrusion process, the thickness ratio between layers is 1:3:1, 61 is the corona layer, using conventional homopolymer PP resin, and the corona value of the machine reaches more than 38 dynes; 62 is the corona layer with The transparent support layer with sufficient stiffness is made of high-temperature-resistant homopolymerized PP resin; 63 is a heat-sealing layer with an "island" effect, and the high-temperature-resistant...

Embodiment 2

[0055] In this embodiment, the structure of the easy-to-remove cover film with the function of high-temperature-resistant PP cup material is as follows from outside to inside: polyethylene terephthalate film (PET), acrylic modified resin ink layer (INK), adhesive layer (AD), silicon coated polyester film (SPET), adhesive layer (AD), cast polypropylene film (CPP).

[0056] Among them, CPP uses high-temperature-resistant random copolymerized polypropylene resin particles that can be heat-sealed with polypropylene cups as the base material, and its incompatible phase EVA is evenly dispersed in the base material in the form of "islands".

[0057] In this embodiment, the preparation method of the easy-to-cover film with the function of high-temperature-resistant polypropylene cup material is as follows:

[0058] (1) The innermost layer of CPP is produced by a three-layer co-extrusion process, and the specific preparation method is as follows:

[0059] a) Mixing and drying: Heat-se...

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Abstract

The invention belongs to the field of food package, and relates to an easy-removing cover film with the high-temperature resistant polypropylene cup material function, which comprises a printing layer polyethylene terephthalate film printed with an oil ink printing pattern; the printing layer polyethylene terephthalate after printed with the oil ink printing pattern is sequentially stuck with a blocked layer nylon film or silicon-plated polyester film and a heat sealing layer casting polypropylene film to form the easy-removing cover film, wherein the casting polypropylene film is produced byadopting a three-layer coextrusion technique, and a peeling way belongs to cohesion peeling. The easy-removing cover film can bear the sterilization under the high temperature of 131 DEG C for 45min,does not have phenomena like delamination, peeling and damage after the sterilization, and has plump and flat package as well as excellent effects; has proper heat sealing strength and firm sealing opening, is smooth without a pause feeling when being removed; and has good blocking performances and anti-pollution performance as well as longer product guarantee period. The easy-removing cover filmcan be combined with the polypropylene cup material to replace traditional glass bottles and tinplate tank high-temperature sterilization package products, reduces the package cost, and has broad market prospect.

Description

technical field [0001] The invention belongs to the field of food packaging, and in particular relates to an easy-to-remove cover film with the function of a high-temperature-resistant polypropylene cup material and a preparation method thereof. Background technique [0002] At present, all kinds of canned fruit, canned meat, canned fish, porridge and other packaging have begun to try to use the combination of easy-to-open lid film and polypropylene cup body to replace packaging that consumes a lot of energy, storage and transportation costs, and takes up a lot of space. Glass jars and tinplate cans. Since canned fruit, canned meat, canned fish, porridge and other packaging need to undergo high-temperature sterilization at 110°C to 121°C for half an hour to an hour during the production process, the traditional composite flexible packaging easy-to-open lid film is combined with the polypropylene cup body The advanced packaging technology is mainly used in the field of proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/36B32B27/34B32B27/30B32B7/12B32B27/16B32B27/18B44C5/04B65D53/08
Inventor 崔晓松高虎黄鹤黎昌虎
Owner 安姆科惠州新材料科技有限公司