THERMOPLASTIC RESIN

Thermoplastic resin is a polymer compound that becomes soft or fluid when heated and then returns to its original solid state when cooled. The resin is used to manufacture many consumer products. The most commonly used contemporary compounds are polyethylene, polypropylene, polyvinyl chloride, polyester, polystyrene. All these raw materials share the common characteristic of a long chain molecular structure with no cross-links. This unique molecular feature of thermoplastics allows the resin to become fluid when heated and reform to its original state when cooled. Thermoplastics have been around for a long time, but are a huge component of everyday life today, several common household products are produced by extrusion or blow molding or injection molding techniques.

 

POLYETHILENE - PE - Polyethylene (abbreviated PE) or is the most common plastic. Its primary use is within packaging (plastic bag, plastic films, geomembranes, containers including bottles, etc.) Polyethylene is classified into several different categories based mostly on its density and branching. Its mechanical properties depend significantly on variables such as the extent and type of branching, the crystal structure and the molecular weight. With regard to sold volumes, the most important polyethylene grades are HDPE, LLDPE/LDPE and MDPE.

 

 

 

POLYPROPYLENE - PP, is a thermoplastic polymer used in a wide variety of applications including packaging and labeling, textiles (e.g., ropes, thermal underwear and carpets), stationery, plastic parts and reusable containers of various types, laboratory equipment, loudspeakers, automotive components, and polymer banknotes. There are three general types of polypropylene: homopolymer, random copolymer, and block copolymer.

 

   

POLYSTYRENE - PS, is an aromatic polymer made from the monomer styrene, a liquid petrochemical. Polystyrene is one of the most widely used plastics, the scale of its production being several billion kilograms per year. It is a colorless solid that is used, for example, in disposable cutlery, plastic models, CD and DVD cases, and smoke detector housings. Products made from foamed polystyrene are ubiquitous, for example packing materials, insulation, and foam drink cups.

 

   

POLYVINYL CHLORIDE - PVC, is the third-most widely produced plastic, after polyethylene and polypropylene. PVC is used in construction because it is cheaper and stronger than more traditional alternatives such as copper or ductile iron. It can be made softer and more flexible by the addition of plasticizers, the most widely used being phthalates. In this form, it is used in clothing and upholstery, electrical cable insulation, inflatable products and many applications in which it replaces rubber.