Method for producing resin sintered body

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United States of America Patent

PATENT NO 11932770
APP PUB NO 20220298370A1
SERIAL NO

17693905

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Abstract

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A method for producing a resin sintered body 1 by applying an ink 3 to thermoplastic resin powder 2 and sintering the powder, the method including the step of immersing an intermediate resin sintered body 1m, which has an unevenly colored region on the surface thereof and the whole of which has been already sintered, in a surface treatment liquid containing sulfuric acid and chromic anhydride, in which the concentration of chromic anhydride is 300 g/L or more, for 5 minutes or longer. When producing a resin sintered body by sintering thermoplastic resin powder, the surface of the resin sintered body can be evenly and sufficiently colored to an extent required without an unevenly colored region on the surface thereof, and also the surface of the resin sintered body can have a good appearance and smoothness.

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Patent Owner(s)

Patent OwnerAddress
HONDA MOTOR CO LTD1-1 MINAMI-AOYAMA 2-CHOME MINATO-KU TOKYO 107-8556
SANKEI GIKEN KOGYO CO LTDTOKYO 115-8555
SOLIZE CORPORATION6-3 SANBAN-CHO CHIYODA-KU TOKYO 102-0075

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Igarashi, Kazuo Wako, JP 20 112
Ikeno, Hiroyuki Wako, JP 6 16
Inomata, Takashi Tokyo, JP 18 141
Masuda, Ryota Tokyo, JP 8 17
Mutai, Kohei Tokyo, JP 2 0
Nishimoto, Satoru Wako, JP 3 3
Sato, Daisuke Tokyo, JP 360 2784

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