Rotocast composite hybrid process for molding composite parts
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United States of America Patent
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May 15, 2012
Grant Date -
Dec 8, 2011
app pub date -
Jun 7, 2010
filing date -
Jun 7, 2010
priority date (Note) -
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Abstract
A rotocast composite hybrid method for efficiently making strong but lightweight parts. The method includes filling a mold with a volume of resin through an access port and then sealing the access port by positioning a lid over the access port. The method includes mounting the mold in a rotocasting machine and then operating the rotocasting machine to rotate the mold about two orthogonal axes until a layer of the resin is applied uniformly over an inner surface of the mold to form an outer wall of a part. The method includes removing the lid and then applying a reinforcement material (e.g., sheets of woven fiberglass) to an inner surface of the outer wall of the part through the access port. The applying of the reinforcement material also involves wet layup such as by binding the reinforcement material to the inner surface by applying additional resin to the reinforcement material.
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