reaction injection molding

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• Reaction injection molding — (RIM molding) is similar to injection molding except that a reaction occurs within the mold. The process uses thermoset polymers (commonly polyurethane) instead of thermoplastic polymers used in standard injection molding. Before injection of the …   Wikipedia

• reaction injection molding — (RIM) A processing technique for the production of large foamed automotive components, based on the simultaneous injection of the liquid components and the chemical reaction in the mold. Compare polymerization. In some cases, the components are… …   Dictionary of automotive terms

• reinforced reaction injection molding — (RRIM) [1] A reaction injection molding of reinforced plastics. [2] The term also refers to the material produced by this technique. Compare reaction injection molding …   Dictionary of automotive terms

• Injection molding — (British: moulding) is a manufacturing process for producing parts from both thermoplastic and thermosetting plastic materials. Molten plastic is injected at high pressure into a mold, which is the inverse of the product s shape. After a product… …   Wikipedia

• injection molding — A method for the fabrication of thermoplastic materials. The viscous resin is squirted, by means of a plunger, out of a heated cylinder into a water chilled mold, where it is cooled before removal. This method is also used with thermosetting… …   Dictionary of automotive terms

• molding — A plastic part produced by injection molding etc. Moldings are parts which have been produced from molding materials (compounds) by shaping in molds closed on all sides (e.g., by compression molding, transfer molding, or injection molding). Also… …   Dictionary of automotive terms

• injection — See air injection direct injection electronic fuel injection fuel injection engine fuel injection pump fuel injection high speed direct injection indirect injection engine indirect …   Dictionary of automotive terms

• Molding (process) — One half of a bronze mold for casting a socketed spear head dated to the period 1400 1000 BC. There are no known parallels for this mold …   Wikipedia

• reaction — See air injection reaction reinforced reaction injection molding …   Dictionary of automotive terms

• Compression molding — Compression molded rubber boots before the flashes are removed. Compression molding is a method of molding in which the molding material, generally preheated, is first placed in an open, heated mold cavity. The mold is closed with a top force or… …   Wikipedia

• Transfer molding — Transfer molding, like compression molding, is a process where the amount of molding material (usually a thermoset plastic) is measured and inserted before the molding takes place. The molding material is preheated and loaded into a chamber known …   Wikipedia