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1. (WO2018139215) DISC AND METHOD FOR PRODUCING SAME

Pub. No.:    WO/2018/139215    International Application No.:    PCT/JP2018/000617
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Sat Jan 13 00:59:59 CET 2018
IPC: G01N 35/00
B29C 45/27
C12M 1/00
G01N 37/00
Applicants: PANASONIC CORPORATION
パナソニック株式会社
Inventors: NOGAMI Takahiro
野上 貴裕
YAMAMOTO Takeki
山本 健樹
Title: DISC AND METHOD FOR PRODUCING SAME
Abstract:
Provided is a disc (1) and method for producing the same which make it possible to suppress the warping of a disc body (4). A disc (1) is equipped with a disc body (4). The disc body (4) is disc-shaped, and has a first surface and a second surface (42) which are on opposite sides from one another in the thickness direction. The disc body (4) is a resin molded body. The disc body (4) has a gate mark (411) formed on the first surface, and a projection (421) which projects from the second surface (42) and overlaps the gate mark (411) in the thickness direction of the disc body (4). At least part of the tip end surface of the projection (421) is a rough surface section (431) exhibiting greater surface roughness than does the portion of the second surface (42) which excludes the projection (421).