SPACE FILLING MATERIAL, METHOD FOR MANUFACTURING SAME, AND SPACE FILLING STRUCTURE

WIPO Patent Application WO/2022/054639

A1

Provided is a space filling material having excellent strength for reinforcing a space when filled into a predetermined space and excellent strength for fixing a material to be fixed. This space filling material (11) is composed of reinforced fibers and a thermoplastic resin, and the reinforced fibers have a plurality of intersections with each other, with at least a portion of the intersections being adhered by the thermoplastic resin. With respect to the volume of all the reinforced fibers, the volume content is at least 20% by volume for reinforced fibers having a degree of curvature defined by the minimum distance between fiber length/both ends of the fiber of at least 1.004. The space filling material (11) expands when the reinforced fibers are released due to softening of the thermoplastic resin by heating, and fills the inside of a predetermined space (13).

WO/2011/139410	MANUFACTURE OF PERFLUOROELASTOMER COMPOUNDS CONTAINING FIBRILLATING PTFE
JPH0633339	INDUSTRIAL APPLICABILITY [title of invention] Short fiber composite sheet
WO/2013/035705	MOLDED BODY WITH EXCELLENT SURFACE DESIGNABILITY AND COMPOSED OF FIBER-REINFORCED COMPOSITE MATERIAL

KATSUYA SATOSHI (JP)
MITSUMORI HARUNA (JP)
ENDO RYOKEI (JP)
TSUNOFURI SHOHEI (JP)
YOSHIDA TSUGUMI (JP)

PCT/JP2021/031888

March 17, 2022

August 31, 2021

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KURARAY CO (JP)

C08J5/04; D21H13/36; D04H1/542; D04H1/58; D21H13/10; F01N3/28

WO2019107343A1	2019-06-06
WO2015108021A1	2015-07-23

JP2006149059A	2006-06-08
JP2003262116A	2003-09-19

SUGIMOTO, Shuji et al. (JP)

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