PVC (polyvinyl chloride) chemical and physical properties of rigid PVC is one of the most widely used plastic materials. PVC material is a non-crystalline materials. PVC material in actual use, often by adding stabilizers, lubricants, auxiliary processing agents, pigments, impact agents and other additives. Runners and Gates: All conventional gate can be used. If the processing of smaller components PVC plastic sheet, preferably using the tip gate or sneak into the gate; for thicker parts, it is best to use the fan gate. The minimum diameter of the tip gate or sneak into the gate should be 1mm; fan gate thickness not less than 1mm. Typical uses of the water supply pipes, home pipes, house siding, business machine housings, electronics packaging, medical equipment, food packaging and other PVC plastic is liquid vinyl chloride monomer (VCM) by suspension, emulsion, bulk or solution process polymerization, suspension polymerization process which mature production technology, simple operation, low production costs, product variety, a wide range of applications, has been the main method of production of PVC resins, PVC production facility in the world, accounts for about 90% of the proportion of ( In the world production of PVC homopolymer also accounted for about 90% of the scale). Followed by emulsion method for the production of PVC paste resin. Its polymerization by a free radical initiator, the reaction temperature is generally 40 ~ 70OC, reaction temperature and concentration of the initiator of the polymerization reaction rate and the molecular weight distribution of PVC resin great influence. PVC can be divided into soft PVC and rigid PVC. Hard PVC market which accounts for about two-thirds of soft PVC 1/3. Soft PVC are generally used for floors, ceilings and leather surface of rigid PVC plastic sheet, but because of soft PVC containing softener (which is soft PVC and rigid PVC difference), easy to become brittle and difficult to save, so its use by limitations. Hard PVC free softener, so flexible, easy molding PVC plastic sheet processing, hard brittle, non-toxic and pollution-free, save for a long time, so it has great development and application value. Below are referred to PVC. PVC is essentially a vacuum plastic film for packaging various types of panel surface, it is also known as the decorative film, with a film PVC plastic sheet manufacturers, used in building materials, packaging, pharmaceutical and other industries. Building materials industry accounted for the largest proportion, 60%, followed by industry, packaging industry, there are a number of other small-scale applications. Rigid PVC plastic sheets, PVC plastic sheets, sea Widex Widex provided by Qingdao Rubber Material Co., Ltd. Widex Qingdao Rubber Material Co., Ltd. (www.haihuidaxiangsu.com) strong, credible, in Qingdao, Shandong industrial products industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the sea Widex and you work into the brilliant, for a better future!