Novel crossed composite membrane

A composite film, a new type of technology, applied in the direction of synthetic resin layered products, layered products, chemical instruments and methods, etc., can solve the problems of high cost, difficult processing, etc., achieve the use effect and service life improvement, excellent gas barrier , Improve the effect of tensile strength

Inactive Publication Date: 2010-09-15
徐建学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods have the problems of high processing difficulty and high cost in varying degrees.

Method used

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  • Novel crossed composite membrane
  • Novel crossed composite membrane
  • Novel crossed composite membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment one, such as figure 2 As shown, the composite film has upper and lower outer layers 1 and a core layer 2 in the middle. The core layer 2 and the outer layer 1 are combined into one body through the adhesive layer 3. The two outer layers 1 are both fiber direction and film There is an orientation film layer with an orientation angle between the sides, and the two outer layers 1 have different orientation angles; wherein, the outer layer 1 is a single-layer structure composed of a single-layer film; the core layer 2 is a single-layer structure, double A layer structure or a multilayer structure composed of two or more single-layer films.

Embodiment 2

[0024] Embodiment two, such as image 3 As shown, the composite film has upper and lower outer layers 1 and a core layer 2 in the middle. The core layer 2 and the outer layer 1 are combined into one body through the adhesive layer 3. The two outer layers 1 are both fiber direction and film There is an orientation film layer with an orientation angle between the sides, and the two outer layers 1 have different orientation angles; wherein, the outer layer 1 is a double-layer structure composed of two single-layer films, and the two layers of single-layer film in the same outer layer 1 The fiber directions of the layers of films cross each other; the core layer 2 is a single-layer structure, a double-layer structure or a multi-layer structure composed of more than two single-layer films.

Embodiment 3

[0025] Embodiment three, such as Figure 4 As shown, the composite film has upper and lower outer layers 1 and a core layer 2 in the middle. The core layer 2 and the outer layer 1 are combined into one body through the adhesive layer 3. The two outer layers 1 are both fiber direction and film There is an orientation film layer with an orientation angle between the sides, and the two outer layers 1 have different orientation angles; wherein, the outer layer 1 is a multi-layer structure composed of three single-layer films, and two adjacent layers in the same outer layer 1 The fiber directions of the single-layer films cross each other; the core layer 2 is a single-layer structure, a double-layer structure or a multi-layer structure composed of more than two single-layer films.

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Abstract

The invention discloses a novel crossed composite membrane which is provided with an upper outer layer, a lower outer layer and an intermediate core layer, wherein the core layer and the outer layers are compounded into a whole through an adhesive layer, and at least one outer layer is an orientation membrane layer which is arranged between the fiber direction and the membrane edge and provided with an orientation angle; the core layer is made of polyethylene glycol terephthalate (PET), wherein the density of the core layer is 1.395 to 1.405g/cm<3>, and the thickness thereof is 10 to 50mu m; an adhesive in the adhesive layer is one of a one-component polyurethane adhesive, a double-component polyurethane adhesive, an alcohol-soluble polyurethane adhesive and a water-soluble polyurethane adhesive; the two outer rings are made of one material selected from low-density polyethylene (LDPE), high-density polyethylene (HDPE) and casting polypropylene (CPP) and also can be made by mixing two or more than two materials selected from the LDPE, the HDPE, the CPP and metallocene polyethylene (mPE). Except for wide heat-sealing temperature range as well as favorable barrier property, tensile strength and printing effect, the composite membrane has the most remarkable tearing resistance property.

Description

technical field [0001] The invention relates to a novel cross composite membrane. Background technique [0002] At present, plastic products have been widely used in various fields, among which plastic packaging and plastic packaging products account for an increasing share in the market, especially composite plastic flexible packaging, which has been widely used in food, medicine, chemical industry and other fields Among them, food packaging accounts for the largest proportion, such as beverage packaging, quick-frozen food packaging, retort food packaging, fast food packaging, etc. These products have brought great convenience to people's lives. With the development of social industry, the field of industrial product packaging is also expanding, and various functional packaging materials emerge in endlessly. The requirements for plastic packaging films are also getting higher and higher. Not only are plastic packaging films required to have good barrier properties, aesthet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/02B32B27/08
Inventor 徐建学
Owner 徐建学
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