Month: August 2022

PP sheet refers to polypropylene, PP sheet is propylene polymerization reaction of polymer, is a white waxy material, transparent and light appearance. PP sheet is made of polypropylene plastic sheet, PP plastic board lining is a semi-crystalline material, PP sheet relative to PE sheet is more rigid, PP plastic board lining melting point is higher. PP sheet has a certain heat resistance, low temperature impact, corrosion resistance and arc resistance, PP sheet has a shrinkage rate, PP sheet is an ideal building sheet in modern architecture. PP plastic board lining is also in line with the requirements of environmental protection of engineering plastic, PP board it tasteless, environmental protection and health.

ABS sheet is a kind of very useful thermoplastic engineering plastics, has a strong impact resistance, heat resistance, low temperature resistance, chemical resistance and excellent electrical properties, but also has easy processing and products good size stability, surface gloss, easy painting, coloring, also can undertake surface spraying, electroplating, metal welding, hot pressing and adhesion and other secondary processing, Widely used in machinery, automobile, electronic appliances, instrumentation, textile and construction and other industrial fields.

The FIRST CONDITION OF transparent sheet production in PET sheet production line is the drying time and the control of hot air dew point. The drying effect directly determines the physical and mechanical properties and production of the sheet. During drying, attention should be paid to the control of drying temperature and time, which can be neither too high nor too low. If the dew point can not drop to check the situation of molecular sieve, the aging molecular sieve can not absorb the moisture in the air, it can not achieve the purpose of dry section, then it is necessary to replace the molecular sieve.

PET sheet production line should pass through this crystallization temperature area quickly, and strictly control the temperature of three rolls. Carry out traction and coiling. The sheet comes out through the pressing roller and enters the traction device by the guide roller. The traction device consists of active rubber roller and passive rubber roller. The main purpose of pressing the two rollers by air pressure is to prevent material from flattening the sheet when the sheet is pulled by the two rollers to the coiling device. In the process of PET production, we should strictly follow the production process requirements, master the drying process and the dew point of hot air, control the gap of the pressing roller and the traction speed ratio of the subsequent unit, so as to improve the production quality.