Molding bigger plastic parts

Structural reaction injection molding (SRIM) polyurethane systems combine some of the best properties of metals and plastics. SRIM's characteristics of light weight, corrosion resistance, parts consolidation, and simplified production come from its polymer base, while its metal-like qualities i...

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Bibliographic Details
Published inMachine design Vol. 63; no. 19; p. 69
Main Author King, Robert H
Format Magazine Article
LanguageEnglish
Published Nashville Penton Media, Inc., Penton Business Media, Inc. and their subsidiaries 26.09.1991
Endeavor Business Media
Subjects
Applications
Automobile industry
Efficiency
Equipment and supplies
Injection molding
Innovations
Molding
Plastics
Polymers
Product design
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Summary:Structural reaction injection molding (SRIM) polyurethane systems combine some of the best properties of metals and plastics. SRIM's characteristics of light weight, corrosion resistance, parts consolidation, and simplified production come from its polymer base, while its metal-like qualities include tensile strengths over 30,000 psi, flexural moduli of more than 2 million, and parts potentially as large as 20 square feet in area. The automotive industry, pushed to achieve continued weight reduction to meet rising Corporate Average Fuel Efficiency (CAFE) standards, has the head start on advanced uses of SRIM polyurethane systems. These uses include door panel substrates, floor pans, roof substrates, spare-tire covers, and elements of chassis structures. The construction industry has also recognized the cost-effectiveness of SRIM structural parts. The increase usage of SRIM for large parts is being fueled by several interrelated developments.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:0024-9114
1944-9577