The most commonly used materials for porous plastics components are listed below with a brief description. Other less common materials include, Low Density Polyethylene (LDPE), Polyvinylidene Fluoride (PVDF), Ethylene Vinyl Acetate (EVA), Polystyrene, Nylon II, and, Polyether Sulfones.
Ultra High Molecular Weight Polyethylene (UHMW)
UHMW is non-toxic, odorless, tasteless, and FDA compliant for use in food processing and handling equipment. Temperature range: -26° to 180°.
High Density Polyethylene (HDPE)
HDPE meets the FDA requirement for direct food contact applications. It is also recognized by the USDA, NSP, and Canadian Dept. of Agriculture. It maintains its properties at extremely low temperatures. Color is white. Temperature range: -100° to 160° F.
Polypropylene (PP)
PP offers a combination of outstanding physical, mechanical, and thermal properties. It has a high corrosion resistance. It has good dimensional stability and surface hardness. It has the highest heat resistance of all the polyolefines. Color is translucent white. Temperature range: 32° to 210° F.
Polytetrafluoroethylene (PTFE)
PTFE will operate in the harshest chemical environments. It is non-toxic, non-allergenic, non-conductive and can be easily cleaned. It has a very low coefficient of friction (very slippery). Color is white. Temperature range -350° to 500° F.
