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1. (WO2018043249) TOOTBRUSH PRODUCTION METHOD

Pub. No.:    WO/2018/043249    International Application No.:    PCT/JP2017/030141
Publication Date: Fri Mar 09 00:59:59 CET 2018 International Filing Date: Thu Aug 24 01:59:59 CEST 2017
IPC: A46B 9/04
Applicants: LION CORPORATION
ライオン株式会社
Inventors: HACHISUKA Ryosuke
蜂須賀 良祐
KOBAYASHI Toshiaki
小林 利彰
Title: TOOTBRUSH PRODUCTION METHOD
Abstract:
The purpose of this invention is to provide a toothbrush production method with which it is possible to combine the necessary mechanical properties/strength quality with transparency. The toothbrush comprises: a head part (2) having a bristle-implanted surface (20) on the tip side; a handle part (7) including a grip part (8), and that is positioned further towards the rear end than the head part; and a neck part (4) that is positioned between the bristle-implanted surface and the handle part, and that is deformed by external force exerted upon the head part. The toothbrush production method includes a step for filling using a resin material via a gate part positioned at a predetermined position. The gate part is positioned further towards the tip than the grip part.