POLYOLEFIN-BASED FIBER-REINFORCED RESIN MULTILAYERED SHEET AND METHOD FOR MANUFACTURING THE SAME
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United States of America Patent
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Mar 17, 2016
app pub date -
Aug 28, 2015
filing date -
Sep 12, 2014
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Abstract
A polyolefin-based fiber-reinforced multilayered sheet of the present invention includes woven fabric layers layered via bonding layers on both surfaces of a core layer, wherein the core layer is made of at least one resin selected from the group consisting of a resin mainly made of polypropylene and a homopolymer polypropylene resin, the woven fabric layers are formed from yarns containing a composite fiber in which a first component is polypropylene and a second component is a polyolefin component having a melting point lower than that of the first component, the bonding layers are thermoadhesive polyolefin-based films, and a cover layer is layered on a surface of one of the woven fabric layers. Accordingly, a polyolefin-based fiber-reinforced resin multilayered sheet that is free from delamination, is light, has a high physical strength against flexure, is inexpensive, has a sense of three-dimensionality, and is amenable to integration with another part by injection molding, and a method for manufacturing the same, are provided.
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