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Glossary of Terms

Extrusion: A plastic forming process in which raw plastic materials are compressed, liquefied and forced through a die in a continuous fashion to create a uniform profile shape.

Foaming Agent: Any substance which alone or in combination with other substances is capable or producing a cellular structure in a plastic mass.

Plastic: A material that contains as an essential ingredient one or more organic polymeric substances of large molecular weight, is solid in its finished state, and, at some stage in its manufacture or processing into finished articles, can be shaped by flow.

Orientation: Crystalline structure alignment in polymeric materials, producing a highly uniform structure. It can be accomplished by cold drawing or stretching.

Embossing: The process of imparting a pattern in relief or three dimensions to a fabric surface.

Nonwoven: A fabric consisting of an assembly of textile fibers (oriented in one direction or in a random manner) held together (1) by mechanical interlocking; (2) by fusing of thermoplastic fibers or (3) by bonding with a rubber, starch, glue, casein, latex or a cellulose derivative or synthetic resin.

Resin: Any of a class of solid or semi-solid organic products, natural or synthetic, of high molecular weight. Most resins are polymers.

Laminates: A combined material made up of two or more layers bonded together with essentially no intermingling at the interface.

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