Gas phase anticorrosive thin film of thermal contraction

Abstract

A gaseous rust resistant thermo shrinkable membrane consists of coupled inner and outer layer, within which the inner layer by weight comprises 60~80% low-density polyethylene, 5~20% linear low-density polyethylene, 5~15% metallocene polyethylene, 5~10% gaseous rust resistant agents and 0.2~1% organic pigments while the outer layer by weight comprises 75~95% low-density polyethylene and 5~25% high-density polyethylene. The gaseous rust resistant membrane in this invention is thermo shrinkable. When made into packages for packaging metallic products and components, the volume in the packages is greatly reduced by heating, which saves the spaces taken by packages, and meanwhile the rust resistant agents quickly spread to the whole space due to the heat and thus perform good rust resistant effects. The packages from the membrane in this invention are applicable in packaging precision instruments, metal tools, automobile components and electric and electronic devices.

Description

technical field

[0001] The invention relates to an improved vapor phase antirust film, which is used for the packaging of metal products and parts, and has antirust effect. Background technique

[0002] Vapor-phase anti-rust packaging film is made into packaging bags, and the gas-phase anti-rust agent will slowly volatilize in the packaging bags, which can protect the metal products and components in the packaging bags against rust. The existing vapor-phase anti-rust packaging film can only realize simple sealing packaging, and the vapor-phase anti-rust agent only slowly volatilizes in the packaging bag, and the anti-rust performance is not good. It is the goal that people are constantly pursuing to improve the ingredients, realize the adjustment of different properties, and improve the anti-rust performance. Contents of the invention

[0003] The purpose of the present invention is to provide a new gas-phase anti-rust heat-shrinkable film, which can shrink-pack products,...