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1. (WO2018221186) RESIN MEMBER

Pub. No.:    WO/2018/221186    International Application No.:    PCT/JP2018/018579
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Tue May 15 01:59:59 CEST 2018
IPC: B29C 45/27
B29C 45/00
Applicants: BRIDGESTONE CORPORATION
株式会社ブリヂストン
Inventors: TANAKA Kanji
田中 寛治
KAGA Norihiko
加賀 紀彦
NISHIMURO Yoichi
西室 陽一
Title: RESIN MEMBER
Abstract:
This resin member is provided with an annular section which partitions a through hole having a circular cross-section, is composed of a reinforced fiber-containing resin, and has one or more gate marks. A weld portion is formed in the annular section. In the annular section, when a polishing surface along an axially perpendicular direction perpendicular to the axial center line of the through hole is formed in the annular section, and a virtual arc which passes through a radial center point between the inner circumferential end and the outer circumferential end of the polishing surface of the annular section, has a center positioned between gates, and is formed around an axial center line having a length of 3.5 mm is referred to as an intermediate arc, seven circumferential regions respectively corresponding to seven virtual arc portions formed by dividing the intermediate arc into lengths of 0.5 mm are referred to as unit regions, and for each of the unit regions, a fiber orientation tensor Txx in the unit region is defined by the following equation (2), Txx= Σ{ (cos2(θ-Θ)cos2φ)} / FN…(2), the sum of valley widths at a half value Txxh in the fiber orientation tensor waveform is at least 1.20 mm.