Polyolefins Midwest Plastics, Inc. - Distributor and fabricator of Architectural and plastic materials in sheet, rod and tubing. All olefins have similar chemical and electrical properties and often compete for the same applications. They differ from each other primarily in their crystalline structure. However, since strength properties vary with the type and degree of crystallinity, each polyolefin may have quite different tensile, flexural, and impact strengths.
Stress crack resistance and useful temperature range also vary with crystalline structure.
The largest volume thermoplastic polymer used today, is available in a wide variety of grades and formulations that have an equally wide range of properties. In general, however, polyethylenes are characterized by toughness, excellent chemical resistnace and electrical properties, low coefficient of friction, near-zero moisture absorption, and ease of processing. Although we stock only natural colored HDPE, LDPE is also available. Both PE s are available in black. UHMW has outstanding abrasion resistance and low coefficient of friction.