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Composite film with high impact resistance

A technology of high impact resistance and composite film, which is applied in the direction of flexible coverings, synthetic resin layered products, types of packaging items, etc., and can solve problems such as broken bags and poor impact resistance

Inactive Publication Date: 2019-03-08
DALIAN DAFU PLASTIC COLOR PRINTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nowadays, packaging bags made of composite film products with BOPA / PE structure are generally used to realize outdoor transportation and storage in winter in the north, but this traditional composite film has poor impact resistance in low temperature environments and often breaks the bag

Method used

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  • Composite film with high impact resistance

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Embodiment Construction

[0009] The specific implementation manner of the present invention will be described below with reference to the accompanying drawings. Such as figure 1 Shown: a composite film with high impact resistance. The composite film has a three-layer structure. From top to bottom, there are printing layer 1, adhesive layer 2 and PE layer 3. The printing layer 1 is a cast nylon layer. , the adhesive layer 2 is a two-component polyurethane adhesive layer, preferably an aliphatic adhesive layer;

[0010] The PE layer 3 is also a three-layer structure, from top to bottom are the first composite PE layer 4, the second composite PE layer 5 and the third composite PE layer 6, the first composite PE layer 4 is made of LLDPE and elastic body composition, and the elastomer accounts for more than 10% of the total mass of the first composite PE layer 4, the second composite PE layer 5 is composed of LLDPE and LDPE of equal mass, and the third composite PE layer 6 is composed of the same Quality...

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Abstract

The invention discloses a composite film with high impact resistance. The composite film is characterized by being a three-layer structure, namely a printing layer (1), a binding agent layer (2) and aPE (polyethylene) layer (3) which are sequentially arranged from top to bottom, wherein the printing layer (1) is a casting nylon layer; the binding agent layer (2) is a double-component polyurethanebinding agent layer; the PE layer (3) is also of a three-layer structure, namely a first composite PE layer (4), a second composite PE layer (5) and a third composite PE layer (6) which are sequentially arranged from top to bottom; the first composite PE layer (4) consists of LLDPE (linear low density polyethylene) and an elastomer, and the elastomer accounts for 10% or more of the total mass ofthe first composite PE layer (4); the second composite PE layer (5) consists of LLDPE and LDPE (low density polyethylene) of equal mass; and the third composite PE layer (6) consists of MLLDPE (metallocene-based linear low density polyethylene)and LDPE of the equal mass.

Description

technical field [0001] The invention relates to the production field of plastic films, in particular to a composite film with high impact resistance. Background technique [0002] The application range of composite film is very wide, and various packaging bags made of composite film are also widely used in various industries. When the packaged product is a frozen product, or the package needs to be stored and transported in a low temperature environment, it is necessary for the packaging bag to be able to adapt to this low temperature environment. Nowadays, packaging bags made of composite film products with BOPA / PE structure are generally used to realize outdoor transportation and storage in northern winter, but this traditional composite film has poor impact resistance in low temperature environments, and often breaks the bag. Therefore need a kind of method or device that can solve above-mentioned problem now. Contents of the invention [0003] The purpose of the pres...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/06B32B27/34B32B27/32B32B7/12B65D65/40
CPCB32B7/12B32B27/08B32B27/32B32B27/34B32B2307/558B32B2439/00B65D65/40
Inventor 孙德武于连生邢顺川吴孝俊张令令张小乐
Owner DALIAN DAFU PLASTIC COLOR PRINTING
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