Coating system and coating process for PLA coated paper

Polylactic acid is also called polylactide (PLA) and belongs to the polyester family. Polylactic acid is a polymer obtained by polymerization of lactic acid as the main raw material. The raw material source is sufficient and renewable, mainly using corn and cassava as raw materials. The production process of polylactic acid is pollution-free, and the product is biodegradable. After use, it can be completely degraded by microorganisms in nature under certain conditions, and finally carbon dioxide and water are generated to realize the cycle in nature. Therefore, it is an ideal green polymer material.

Polylactic acid has good thermal stability, the processing temperature is 170-230℃, and it has good solvent resistance. It can be processed in many ways, such as extrusion, spinning, biaxial stretching, and injection blow molding. In addition to being biodegradable, products made of polylactic acid have good biocompatibility, gloss, transparency, hand feel and heat resistance, as well as certain bacteria resistance, flame retardancy and UV resistance, so they are very useful It can be widely used as packaging materials, fibers and non-wovens. It is currently mainly used in clothing (underwear, outerwear), industry (construction, agriculture, forestry, papermaking), and medical and health fields.

Compared with traditional PE coated paper products, PLA coated paper can be recycled, greatly reducing the burden on natural resources and the environment.

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