According to G3 comprehensive report, there are two kinds of profiles, one is all-plastic profiles, and the other is composite profiles made of plastic materials and non-plastic materials. According to the degree of hardness of profile, it can be divided into soft profile and hard profile. According to the classification of plastic varieties, it can be divided into: PVC profile, ABS profile, PE profile, etc., most of which are PVC profiles. According to the cross-section characteristics, the profile can be divided into 7 categories: profile pipe, hollow profile, plug profile, open profile, segmented profile, inlaid profile and solid profile. Due to the huge market demand and broad development prospects, plastic profile has developed rapidly in China in recent years. Due to the fierce market competition, all plastic machinery manufacturers are considering a problem: how to improve the productivity and qualified rate of plastic profile products on the premise of ensuring product quality, and give full play to the equipment's maximum capacity so as to reduce the production cost of products. Advanced production equipment is the premise of ensuring product quality. Aware of the importance of extrusion equipment, a number of extrusion equipment production lines are specially introduced from Germany to better produce high-quality products for customers. With the increasing competition in plastic profile industry and the increasing frequency of mergers and acquisitions and capital operations among large-scale plastic profile enterprises, domestic excellent plastic profile manufacturers pay more and more attention to the research on the industry market, especially the in-depth research on the development environment of enterprises and the changes of customer demand trends. Plastic profile products are widely used: window frames, stair handrails, trunking, skirting boards, special-shaped pipes, etc. The raw materials are mainly hard PVC, and a few are semi-hard PVC, soft PVC, low foaming polyurethane and other materials. For hard PVC plastic profiles, there is a disadvantage of poor impact resistance, so ACR, CPE, EVA, MBS, etc. are often added to improve the impact strength. CPE (chlorinated polyethylene), EVA (ethylene-vinyl acetate copolymer) and styrene graft copolymer) are generally added in 6%~10%. MBS is mainly used in transparent plastic profile products. EVA should not be shared with lead stabilizer. When shared, molding processability is poor, and powder spots are easy to form. CPE should not be shared with zinc stabilizer, and the low temperature property of CPE is not very good.
