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High intensity cold contraction stretching casing tube film

A technology of cold shrinkage and casing, which is applied in the field of plastics, can solve the problems of low clamping force, high production cost, and poor puncture resistance of cold shrinkage stretch casing film, and achieve good puncture resistance, low production cost, and high recovery. strong elastic effect

Active Publication Date: 2012-08-15
ZHEJIANG BILI POLYMER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the problems of low clamping force, weak rebound force, poor puncture resistance and high production cost of the existing cold-shrinkable stretch sleeve film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Embodiment 1: the present invention is a three-layer structure, followed by an outer layer, a middle layer and an inner layer, and the percentages by weight of the materials of each layer between the outer layer, the middle layer and the inner layer are respectively: 10%-30% of the outer layer and 40% of the middle layer -80%, inner 10% -40%.

[0013] The outer layer consists of metallocene linear low density polyethylene (MLLDPE), ethylene-vinyl acetate copolymer (EVA) (with 7%-35% VA content) or ethylene-propylene copolymer (elastomer) or propylene-based multi-component copolymer Material and functional masterbatch, metallocene linear low density polyethylene (MLLDPE) in the outer layer is 20%-80% by weight, ethylene-vinyl acetate copolymer or ethylene-propylene copolymer (elastomer) or propylene-based The weight percentage of multi-component copolymer is 40%-50%, and the weight percentage of functional masterbatch is 0.5%-10%; metallocene linear low density polyethyl...

Embodiment 2

[0017] Embodiment 2: the present invention is a three-layer structure, followed by an outer layer, a middle layer and an inner layer, and the weight percentages of materials in each layer between the outer layer, the middle layer and the inner layer are: 10%, 70%, and 20%. The outer layer includes metallocene linear low density polyethylene (MLLDPE), ethylene-vinyl acetate copolymer (EVA) or ethylene-propylene copolymer (elastomer) or propylene-based multi-polymer and functional masterbatch, one of the three components The weight percentage between is: 67%, 30%, 3%. The middle layer includes metallocene linear low-density polyethylene (MLLDPE) and ethylene-vinyl acetate copolymer (EVA) or ethylene-propylene copolymer (elastomer) or a propylene-based multi-polymer, and the weight percentage between the two components is : 60%, 40%. The inner layer includes metallocene linear low-density polyethylene (MLLDPE) and functional masterbatch, and the weight percentages of the two com...

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PUM

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Abstract

A high-strength cold-shrink stretch sleeve film is a three-layer structure which comprises an outer layer, a middle layer and an inner layer respectively. The outer layer comprises metallocene linear low-density polyethylene (MLLDPE), ethylene-vinyl acetate copolymer or ethylene-propylene copolymer (an elastomer) or multiple copolymers of propenyl and functional masterbatch; the middle layer comprises the metallocene linear low-density polyethylene (MLLDPE), the ethylene-vinyl acetate copolymer (EVA) or the ethylene-propylene copolymer (the elastomer) or the multiple copolymers of propenyl; and the inner layer comprises the metallocene linear low-density polyethylene (MLLDPE) and the functional masterbatch. The high-strength cold-shrink stretch sleeve film has the advantages of high clamping force, strong recurrent force, good anti-pricking performance and low production cost.

Description

technical field [0001] The invention belongs to the field of plastics, in particular to a cold-shrink stretch sleeve film. technical background [0002] The existing cold-shrinkable stretch sleeve films for packaging in the market not only have low clamping force, weak resilience, poor puncture resistance, but also high production costs. Contents of the invention [0003] The purpose of the present invention is to develop a high-strength cold-shrinkable stretch sleeve film. [0004] The present invention aims to solve the problems of low clamping force, weak resilience, poor puncture resistance and high production cost of the existing cold-shrinkable stretch sleeve film. [0005] The technical scheme of the present invention is: it has a three-layer structure, which is an outer layer, a middle layer and an inner layer in sequence. [0006] The outer layer includes metallocene linear low density polyethylene (MLLDPE), ethylene-vinyl acetate copolymer or ethylene-propylene...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/18B32B27/32
Inventor 陈迎庆
Owner ZHEJIANG BILI POLYMER TECH CO LTD