Film with high drawing ratio and production method thereof

A stretching ratio and film technology, which is applied in the field of high stretching ratio films and their production, can solve the problems of inability to combine inorganic salts and films closely at the molecular level, poor fracture resistance, and low stretching ratios, and achieve improved strength. , The effect of high retraction force and high stretching ratio

Active Publication Date: 2018-12-28
NINGBO HONGYAN PACKING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] With the development of industrial automation, more and more large companies are switching from worker packaging and traditional semi-automatic packaging to fully automatic packaging lines. However, the traditional stretch film has low stretching ratio and poor fracture resistance, which cannot meet this high-speed packaging. High tensile automatic packaging equipment
For example, the Chinese patent appli

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A film with a high stretch ratio consisting of an outer layer, a middle layer and an inner layer;

[0038] The composition and parts by weight of the outer layer include:

[0039] 300 parts by weight of metallocene linear low density polyethylene;

[0040] 500 parts by weight of ethylene-modified polyethylene terephthalate;

[0041] The composition and weight parts thereof that described middle layer comprises:

[0042] 100 parts by weight of maleic anhydride grafted low-density polyethylene;

[0043] 40 parts by weight of graphene oxide modified low-density polyethylene;

[0044] The composition and parts by weight of the inner layer include:

[0045] Polyamide-11 100 parts by weight;

[0046] The preparation method of the graphene oxide modified low-density polyethylene is to add graphene oxide into deionized water, uniformly disperse with ultrasonic stirring to obtain a graphene oxide solution, and then add low-density polyethylene to the graphene oxide solution...

Embodiment 2

[0059] A film with a high stretch ratio consisting of an outer layer, a middle layer and an inner layer;

[0060] The composition and parts by weight of the outer layer include:

[0061] 500 parts by weight of metallocene linear low density polyethylene;

[0062] 700 parts by weight of ethylene-modified polyethylene terephthalate;

[0063] The composition and weight parts thereof that described middle layer comprises:

[0064] 300 parts by weight of maleic anhydride grafted low-density polyethylene;

[0065] 80 parts by weight of graphene oxide modified low-density polyethylene;

[0066] The composition and parts by weight of the inner layer include:

[0067] Polyamide-12 200 parts by weight;

[0068] The preparation method of the graphene oxide modified low-density polyethylene is that graphene oxide is added to deionized water, uniformly dispersed by ultrasonic stirring to obtain a graphene oxide solution, and then the low-density polyethylene is added to the graphene o...

Embodiment 3

[0081] A film with a high stretch ratio consisting of an outer layer, a middle layer and an inner layer;

[0082] The composition and parts by weight of the outer layer include:

[0083] 400 parts by weight of metallocene linear low density polyethylene;

[0084] 600 parts by weight of ethylene-modified polyethylene terephthalate;

[0085] The composition and weight parts thereof that described middle layer comprises:

[0086] 200 parts by weight of maleic anhydride grafted low-density polyethylene;

[0087] 60 parts by weight of graphene oxide modified low-density polyethylene;

[0088] The composition and parts by weight of the inner layer include:

[0089] Polyamide-11 150 parts by weight;

[0090] The preparation method of the graphene oxide modified low-density polyethylene is that graphene oxide is added to deionized water, uniformly dispersed by ultrasonic stirring to obtain a graphene oxide solution, and then the low-density polyethylene is added to the graphene o...

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Abstract

The invention discloses a film with a high drawing ratio. The film is composed of an outer layer, an intermediate layer and an inner layer. The outer layer is a metallocene linear low density polyethylene and ethylene modified polyethylene glycol terephthalate blending modified resin; the intermediate layer comprises the compositions of maleic anhydride grafted low density polyethylene and graphene oxide modified low density polyethylene; and the inner layer is polyamide-11 or polyamide-12. The invention also discloses a production method of the film with the high drawing ratio. Compared withthe prior art, the packaging film has the advantages of high drawing ratio, low cost, good comprehensive performance, strong market competitive strength and the like. The invention also discloses theproduction method of the film with the high drawing ratio.

Description

technical field [0001] The invention relates to the technical field of films, in particular to a film with a high draw ratio and a production method thereof. Background technique [0002] The types of film include single-layer film, composite film and co-extrusion film. The disadvantages of single-layer film such as low mechanical strength and surface hardness, flammability and poor heat resistance limit its application range, and the market for co-extrusion film is relatively broad. Among them, the multi-layer co-extrusion technology is to use more than 3 extruders to melt and extrude resin materials with different functions, such as PA, PE, PP, etc. Bulge forming, cooling and compounding to make multi-layer composite film. [0003] The film produced by the multi-layer co-extrusion method can well meet the needs of various industrial packaging, and has the incomparable advantages of the dry composite film. By adjusting the thickness of each layer and using a variety of dif...

Claims

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Application Information

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IPC IPC(8): B29C47/92B29C69/02B32B27/06B32B27/32B32B27/36B32B27/34C08L23/08C08L67/02C08L51/06C08L23/06C08K3/04C08J5/18
CPCB32B27/08B32B27/32B32B27/327B32B27/34B32B27/36B32B2307/412B32B2307/54B32B2307/5825B32B2307/712B32B2307/7265C08J5/18C08J2351/06C08J2367/02C08J2423/06C08J2423/08C08K3/042
Inventor 李玉斌
Owner NINGBO HONGYAN PACKING MATERIAL
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