Double-sided corona cover light membrane

Abstract

The present invention discloses a double-sided corona cover light membrane. The membrane comprises a core layer located between a corona side printing surface layer and a composite layer. A preparation method of the double-sided corona cover light membrane comprises the following steps: adding raw materials corresponding to the core layer, the corona side printing surface layer and the composite layer into corresponding high-speed mixers respectively, after being uniformly mixed, feeding the raw material of the core layer into a main extruder, feeding the raw material of the corona side printing surface layer and the raw material of the composite layer into corresponding auxiliary extruders, heating up heating zones of the main extruder and the auxiliary extruders, and integrating, longitudinally stretching and transversely stretching by a screw extruder to obtain the product. According to the double-sided corona cover light membrane, electric resistance of the surface of a printing membrane is reduced to be below 10 to the 21th power omega by adding an anti-static agent, and static electricity of the membrane is reduced; the problem that the printing membrane is adhered to other substances is solved by adding a release agent; and by corona treatment of 32 dynes at a membrane traction position, chemical bonds of plastic molecules are broken and degraded, roughness and surface area of the membrane surface are increased, and coloring ability of the membrane is improved during printing in a later stage.

Description

technical field [0001] The invention belongs to the technical field of film production, and relates to a BOPP film, in particular to a double-sided corona cover film. Background technique [0002] At present, the production technology of BOPP materials in the world is developing rapidly, especially multinational companies such as Germany, France, and Japan have accelerated the speed of research and development. Due to the complex production technology and difficulty of double-sided corona cover film, the production process formula, etc. Difficult to grasp. There are only a few companies in my country that have done relatively well in this field, such as Foshan and Xiamen, but the products produced cannot meet the needs of the domestic market. Therefore, the research and development of double-sided corona cover film products is very important for improving product It is of great significance to improve the level of science and technology, improve the quality of products, occupy...

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Problems solved by technology

[0002] At present, the production technology of BOPP materials in the world is developing rapidly, especially multinational companies such as Germany, France, and Japan have accelerated the speed of research and development. Due to the complex production technology and difficulty of double-sided corona cover film, the production process formula, etc. Difficult to grasp. There are only a few companies in my country that have done relatively well in this field, such as Foshan and Xiamen, but the products produced cannot meet the needs of the domestic market. Therefore, the research and development of double-sided corona cover film products is very important for improving product It is of great significance to improve the level of science and technology, improve the grade of products, occupy the market, and improve the economic benefits of enterprises.

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