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Injection Molding Guide - LyondellBasell

A Guide toPolyolefin Injection Molding1A Guide to Polyolefin Injection MoldingTable of ContentsIntroduction .. 2 Polyolefins are derived from petrochemicals .. 2 Molecular structure and composition affect properties and processability .. 2 Chain branching .. 3 density .. 3 Molecular weight .. 4 Molecular weight distribution .. 4 Copolymers .. 5 Modifiers and additives .. 5 Working closely with molders .. 5 How polyolefins are made .. 5 Low density polyethylene (LDPE) .. 6 High density polyethylene (HDPE) .. 6 Linear low density polyethylene (LLDPE) .. 7 Polypropylene.

Ethylene copolymers, such as ethylene vinyl acetate (EVA), are made by the polymerization of ethylene units with randomly distributed vinyl acetate (VA) comonomer groups. Chain branching Polymer chains may be fairly linear, as in high density polyethylene, or highly branched as in low density polyethylene. For every 100-ethylene units in the

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A Guide to Polyolefin Film Extrusion - LyondellBasell

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