Starch-based plastics in actual production

company-news | Time:2023-01-17

Extrusion processing method is a kind of starch-based material preparation method commonly used in the actual processing of factories. According to different processing methods, extrusion processing is divided into extrusion casting, extrusion blow molding, extrusion compression molding, extrusion suction Plastic and extrusion injection molding etc.

In the extrusion process, due to the inter-molecular and intra-molecular hydrogen bond forces inside the starch, it cannot be directly processed. The starch must be mixed with a plasticizer, etc., and the structure of the starch granules is destroyed by the extruder to make the plasticized The agent is transferred to the starch molecules to make thermoplastic starch for processing.

Extrusion processing includes two stages, material extrusion and material forming. Material extrusion is to add the raw material mixture into the extruder, so that the raw material mixture reaches the melting temperature under high temperature conditions and the extrusion and shearing of the screw, and then the molten mixture will be extruded to the Die.

Material molding is to make the extruded mixture into the required material through different processing and molding methods. In actual industrial production, the extrusion mixture is generally not directly processed, but after the raw material mixture is extruded, it is cut into raw material masterbatches. Then according to the requirements of different materials, different raw material masterbatches are mixed and put into the extruder for extrusion molding.

Henan Techuang Biotechnology Co., Ltd. is a modern green and environmental protection enterprise integrating R&D, production, sales and technical services, providing services for biodegradable plastic bags and products. For more information, please visit the official website of Baydeebio: www.baydeebio.com

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