Industry Background and Technical PositioningAs a functional polymer material, CPE (Chlorinated Polyethylene) breathable film is produced through the chlorination modification of polyethylene. It integrates high breathability, water resistance, and environmental protection, making it a core material

​In today's commodity packaging field, PE heat shrink film is playing an increasingly important role, becoming a reliable assistant for many enterprises to ensure product transportation and sales.

To produce foamed polymer materials such as foam plastics and sponge rubber, a foaming agent is typically added to the plastic or rubber. When the plastic or rubber is heated, the foaming agent releases gas, causing the material to form fine pores or a honeycomb structure. A foaming agent is a subst

Stretching occurs because the velocity of the filament extruded from the spinneret is lower than the moving speed of the winding device, i.e., the stretching speed is higher than the spinning speed, causing the diameter of the as-spun fiber to be smaller than that of the spinneret orifice. In chemical fiber production, stretching can be carried out continuously following the spinning process, or separately from the spinning process using wound yarn or as-spun fibers pre-wound on bobbins or in silk cans.

First, heat the extruder to the predetermined temperature, then start the screw and feed materials simultaneously. Extrusion molding is a continuous process, with the key being the adjustment of initial extrusion parameters. It is necessary to adjust process parameters such as the temperature of each heating zone in the extruder barrel, the temperature of the die head, and the screw rotation speed according to the extrusion process properties of the plastic and the structural characteristics of the extruder die head, so as to control the temperature and pressure distribution of the material within the barrel. According to the requirements for the shape and dimensions of the product, adjust the die size, concentricity, traction equipment, and other devices to control the exit swelling and shape stability of the extrudate, thereby ultimately controlling the output and quality of the extrudate until the extrusion reaches normal operation for continuous production.