Method of Producing Isotropic Random Mat for Forming Thermoplastic Composite Material
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United States of America Patent
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Issued Date -
Sep 17, 2015
app pub date -
Mar 14, 2014
filing date -
Mar 14, 2014
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Abandoned
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Abstract
There is provided a method of producing a random mat for manufacturing a thermoplastic composite material, including: slitting continuously a strand including reinforcing fibers in a longitudinal direction of the strand to form a plurality of reinforcing fiber strands with narrow width; cutting the reinforcing fiber strands with narrow width continuously to be an average fiber length of 3 mm to 100 mm to form reinforcing fiber strand pieces; spraying gas onto the cut reinforcing fiber strand pieces for opening the reinforcing fiber strand pieces to form reinforcing fiber bundle pieces; and depositing and fixing the reinforcing fiber bundle pieces onto a breathable support together with a thermoplastic resin in a powder or short fibrous form to form an isotropic random mat in which the reinforcing fibers and the thermoplastic resin are mixed.
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