High-extension thin film used for protective film

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...

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

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