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Patent Searching and Data


Title:
WINDING CORE FOR FILM AND POLYVINYL ALCOHOL FILM ROLL USING WINDING CORE
Document Type and Number:
WIPO Patent Application WO/2020/066883
Kind Code:
A1
Abstract:
In order to provide a winding core for a film, capable of preventing winding displacement and a polyvinyl alcohol film roll using the winding core, provided is a winding core 5 for a film being provided with: a winding core body 1; and a tape 2 spirally attached to the outer circumferential surface of the winding core body 1. Regarding the spirally winding direction of the tape 2, portions on a first edge side and portions on a second edge side respectively from the axial center of the winding core body 1 are directed oppositely to each other, and gaps are provided between respective adjacent sections of the tape 2 attached spirally.

Inventors:
ASAI TAKASHI (JP)
YOSHIKAWA YUJI (JP)
YOSHIMURA KOUJI (JP)
NABETA KOUICHIROU (JP)
Application Number:
PCT/JP2019/036938
Publication Date:
April 02, 2020
Filing Date:
September 20, 2019
Export Citation:
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Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
B65H75/18; B65H19/28; B65H75/10
Foreign References:
JPH07117904A1995-05-09
JP2014201401A2014-10-27
Attorney, Agent or Firm:
SAITOH Yukihiko et al. (JP)
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