Molding Material, Assembly of Molding Materials, Method for Producing Molding Material, and Method for Producing Assembly of Molding Materials
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United States of America Patent
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Issued Date -
Sep 12, 2019
app pub date -
Oct 17, 2017
filing date -
Nov 1, 2016
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Abstract
The present invention provides an assembly of molding materials, each of which is obtained by covering a carbon fiber bundle that contains an impregnation assistant with a thermoplastic resin. This assembly of molding materials is configured such that 30% or more of the whole assembly is a molding material that satisfies 100≤F/L (N/m), where L is the molding material length in the axial direction of the carbon fiber bundle and F is the grip force of the carbon fiber bundle with respect to the molding material. Consequently, falling-off of carbon fibers from the molding materials during injection molding is able to be prevented, so that a molded body is able to be produced with high production efficiency.
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