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Basic principles of plastic film biaxial stretching process

May 10, 2024
Basic principles of plastic film biaxial stretching process
 
The basic principle of the biaxial stretching process is to heat and melt the polymer raw materials through the extruder and extrude them into thick sheets. In an appropriate temperature range above the glass transition temperature and below the melting point, the polymer material is heated and melted by an external force through a longitudinal drawing machine and a transverse drawing machine. Under the influence, it is stretched by a certain multiple in the longitudinal direction and transverse direction.
 
This process will orient the molecular chains or crystal planes of the polymer in a direction parallel to the plane of the film and orderly arrange it. Then heat setting is performed under tension to fix the oriented macromolecular structure. Finally, after cooling and subsequent processing, the ideal plastic film can be obtained. This process can improve the mechanical, barrier, optical, and weather resistance properties of the film, and the produced film has stable dimensions, uniform thickness, and the characteristics of high-speed automation.

Huatao supply Industry Rollers included Rollers for Plastic film, Rollers For Metallurgy. We supply quality Gearboxes and Electric Motors as well.

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Huatao Group was founded in 2008. We are a professional and leading supplier of various rollers, motors, gearboxes, and rotary joints to the plastic & rubber, metallurgy, paper, corrugated board, printing & dyeing, and textile industries over 15 years of experience. With a strong commitment to innovation, reliability, and customer satisfaction, Huatao Group has become a trusted provider in the industry and our products have been exported to more than 96 countries and have a good reputation.. Products: Gearboxes: HUATAO offers a diverse range of gearboxes designed for various applications across industries. These gearboxes are known for their efficiency, durability, and precise power transmission. They are available in different types, including helical, bevel, worm, and planetary gearboxes, catering to the specific needs of customers. Motors: Huatao provides a comprehensive selection of motors suitable for a wide range of applications. Their motor offerings include electric motors, servo motors, and specialized motors for specific industries. These motors are known for their high performance, energy efficiency, and reliable operation. Ours motors are designed to meet the...
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