MANUFACTURING OF PET PRODUCTS
PET is generally used for the manufacture of components to be fitted inside industrial machinery such as rollers, bushings, cylinders, discs, rings, spacers, skids, wheels, gears, pistons, washers, levers, hubs, plates, shafts.
The polyethylene terephthalate (PET) is a partially crystalline thermoplastic material, belonging to the family of aromatic polyesters. The raw materials for the condensation of the PET materials are terephthalic acid and ethylene glycol. It is distinguished into three different types: the crystalline PET (PET-C), the amorphous PET (PET-A) and the PET copolymers with greater impact resistance (PET-G).
CHARACTERISTICS AND APPLICATION FIELDS
PET can be molded, blown, extruded, machined, welded and glued.
Generally at temperatures lower than 80 ° C has a high strength and rigidity, with little tendency to formation of cracks. The resilience is reduced, while the sliding and friction behavior is good. The PET has good dimensional stability. The maximum operating temperature for long periods is of 100-120 ° C. The good electrical properties are not very sensitive to frequency and temperature. The PET is not very permeable to oxygen and to carbon dioxide. And ‘resistant to weak acids and alkalis, oils, greases, aliphatic and aromatic hydrocarbons and carbon tetrachloride. It is not acid-resistant and strong alkaline solutions, to phenol and prolonged use in hot water at temperatures above 70 ° C. The PET, under stress, is not subject to cracking. Has excellent stability to weathering, it is unbreakable and considerably lighter.
The PET, thanks to its peculiar characteristics, is suitable for the production of technical articles such as bearings, gear wheels, shafts, guides, clutches, bushings, spacers and gaskets. And ‘particularly suitable for use in electrical and food industry (food contact and with cold water).
Shown below are the most common PE trade names available at LIMA.
|LM512||PET + PTFE|
PET – TRADE NAMES
Shown below are the most common trade names for the PET material.
Please remember that LIMA can provide both generic materials and materials covered by trademark (ie that show the TM or ® endorsements), based on the requirements of the customer. If the customer wishes to details made of plastic material covered by trademark, LIMA will stock up directly by the holding company of the said trademark.