Three dimensional netted structure
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United States of America Patent
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Jun 25, 2019
Grant Date -
Jan 28, 2016
app pub date -
Sep 10, 2015
filing date -
Mar 15, 2000
priority date (Note) -
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Abstract
A three-dimensional netted structure having an upper surface, a lower surface, two side surfaces a left end surface, and a right end surface, including at least a plurality of filaments helically and randomly entangled and thermally bonded together, wherein the filaments are formed out of a thermoplastic resin by extrusion molding followed by cooling with a liquid; and the netted structure is four-surface molded, the upper surface, the lower surface and the two side surfaces being molded. An apparatus and a method for manufacturing the three-dimensional netted structure.
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