
High-density polyethylene (HDPE) or polyethylene high-density (PEHD) is a polyethylene thermoplastic made from petroleum. Known for its large strength to density ratio, HDPE is commonly used in the production of plastic bottles, corrosion-resistant piping, geomembranes, and plastic lumber. HDPE is commonly recycled, and has the number `2` as its.....
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http://en.wikipedia.org/wiki/High-density_polyethylene

(from the article `industrial polymers, chemistry of`) ...may exhibit a variety of architectures. Most common from the commercial standpoint are the linear, branched, and network structures. The linear ... ...forms such as those illustrated in Figures 1 and 2. Branched versions are known as low-density polyethylene (LDPE) or linear low-...
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http://www.britannica.com/eb/a-z/h/47
(HDPE) A member of the polyethylene family of plastics and is used to make products such as milk bottles, pipes and shopping bags. HDPE may be coloured or opaque.
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(HDPE) This term is generally considered to include polyethylene plastics ranging in density from about 0.940 to 0.960 and over in recycled plastic and plastic materials. Its main usages are crates and boxes, bottles (for food products, detergents, cosmetics), food containers, toys, petrol tanks, industrial wrapping and film, pipes and house...
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https://www.dwplastics.co.uk/glossary/

A material used to make plastic bottles and other products that produces toxic fumes when burned.
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https://www.encyclo.co.uk/local/20094

This term is generally considered to include polyethylene's ranging in density from about 0.940 to 0.960 and over.
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https://www.encyclo.co.uk/local/23693

polyethylene consisting mainly of linear, or unbranched, chains with high crystallinity and melting point, and density of 0.96 or more, produced at low pressure and used chiefly for containers and articles made by injection molding. Abbr.: HDPE&hasp;&hasp; Cf. low-density polyethylene.
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https://www.infoplease.com/dictionary/high-density-polyethylene
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