High-strength protective film for stamping protection

Abstract

The invention discloses a high-strength protective film for stamping protection, which is obtained by blow molding of master batch, the master batch is prepared from the following components in parts by weight: 100 parts of low-density polyethylene with a melt index of 0.5 to 5g / 10min, 10 to 25 parts of metallocene linear low-density polyethylene with a melt index of 1.8 to 2g / 10min, 5 to 12 parts of ternary co-polypropylene, 0.3 to 1 part of oleamide, 0.1 to 1 part of stearate, 0.2 to 0.8 part of zinc oxide, 0.5 to 1 part of stearate, 1 to 3 parts of polysebacic acid-decanediol glycol, 2 to 4 parts of dicyclohexylcarbodiimide and 0.5 to 1.5 parts of antioxidant. According to the high-strength protective film, the elongation at break of the film is improved, the high-strength protective film is not easy to break during stamping, the puncture resistance of the protective film is also improved, and the puncture force reaches 18N, so that the application prospect is expanded.

Description

technical field [0001] The invention relates to the field of protective films, in particular to a high-strength protective film for stamping protection. Background technique [0002] The protective film is a film material that has a protective effect on the surface of other materials. Its main function is to protect the protected material from mechanical scratches, dust pollution, harmful gas erosion and microorganisms during manufacturing, transportation, storage and secondary processing. corrosion. Polyethylene film has the characteristics of softness, good toughness, high elongation, easy bending and good adhesion, and occupies a large market share in protective films. 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. In the process of metal plate stamping and forming, the processing environment has large tensile force, high friction force...

AI Technical Summary

Problems solved by technology

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 , a protective film must be applied to metal stamping parts for protection

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