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High-extension thin film used for protective film

A technology for stretching film and protective film, which is applied in the field of high-stretching film, which can solve problems such as limited protective film strength and tensile properties, reduced service life of molds, and scratches on the surface of stamped products, so as to improve the protection effect and increase the yield , Improve the effect of dispersion

Inactive Publication Date: 2019-04-16
SUZHOU XINZHONGDE NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the process of metal plate stamping and forming, the processing environment has large tensile force, high friction force, local high temperature and other factors that cause the surface of the stamped product to be scratched, wrinkled or even cracked, which also reduces the service life of the mold. Therefore, in the stamping process Among them, a protective film must be applied to the metal stamping parts for protection
However, in many cases, the stamping and coating of metal stamping parts are carried out at the same time, which is limited by the strength and tensile properties of the general protective film, making the protective film easy to crack during the stamping process

Method used

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  • High-extension thin film used for protective film

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Experimental program
Comparison scheme
Effect test

Embodiment 1~4

[0025] Embodiment 1~4: A kind of high-stretch film for protective film, comprises the following materials by weight:

[0026] Table 1

[0027] components

Example 1

Example 2

Example 3

Example 4

Low-density polyethylene

35

38

43

45

Metallocene Linear Low Density Polyethylene

25

20

15

19

High-density polyethylene

10

8

13

15

tert-butyl methacrylate

8

4

6

2

Nano barium titanate

1

2.5

3

2

Oleamide

0.7

1

0.1

0.4

3-Allyloxy-2-hydroxy-1-propanesulfonic acid sodium salt

0.3

1

0.5

0.8

Zinc stearate

0.2

0.8

0.1

1

Di(2-ethylhexyl) azelate

1

0.1

0.8

0.4

antioxidant

0.8

1.2

0.5

1.5

[0028] The antioxidant is composed of 3-(3,5-di-tert-butyl-4-hydroxyphenyl) n-octadecyl propionate and didodecyl thiodipropionate in a weight ratio of 1:2. composition.

[0029] The density of ...

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Abstract

The invention discloses high-extension thin film used for protective film. The high-extension thin film us prepared from, by weight, 35-45 parts of low-density polyethylene,15-25 parts of Metallocenelinear low density polyethylene, 8-15 parts of high density polyethylene, 2-8 parts of methacrylic acid tert-butyl ester, 1-3 parts of Nanometer barium titanate, 0.1-1 part of oleamide, 0.3-1 part of3-allyloxy-2-hydroxy-1-dimethylmethane sodium sulfonate salt, 0.1-1 part of zinc stearate, 0.1-1 part of azelaic acid bis (2-ethylhexyl) ester and 0.5-1.5 parts of an antioxygen, and the antioxygen iscomposed of 3-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionate and dilauryl thiodipropionate; the high-extension thin film is high in breaking elongation rate, cannot be easily broken in the stampingprocess and can protect a stamping piece well, and therefore the product yield is increased.

Description

technical field [0001] The invention relates to a polyethylene film, in particular to a high-stretch film used for a protective film. Background technique [0002] At present, in the factory production of automobiles, household appliances and other fields, the metal stamping forming process has been widely used and formed a very mature process. The metal stamping forming process is a manufacturing process that uses a metal stamping die to form a metal sheet into a workpiece with a three-dimensional shape. Stamping parts rely on presses and molds to apply external forces to sheets, strips, pipes, and profiles to produce plastic deformation or separation. , so as to efficiently and accurately obtain workpieces of required shape and size. [0003] In the process of metal plate stamping and forming, the processing environment has large tensile force, high friction force, local high temperature and other factors that cause the surface of the stamped product to be scratched, wrin...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08K13/02C08K3/24C08K5/098C08K5/42C08K5/11C08J5/18
CPCC08J5/18C08J2323/06C08J2423/06C08J2423/08C08K3/24C08K5/098C08K5/11C08K5/42C08K13/02C08K2201/011
Inventor 顾明涛施利明李敏
Owner SUZHOU XINZHONGDE NEW MATERIAL CO LTD
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