US 12,441,580 B2
Reel member and adhesive film winding body
Kazunori Hamazaki, Tochigi (JP); Hiroyuki Nakamura, Tochigi (JP); and Tomohisa Kawai, Tochigi (JP)
Assigned to DEXERIALS CORPORATION, Tochigi (JP)
Appl. No. 17/777,534
Filed by DEXERIALS CORPORATION, Tochigi (JP)
PCT Filed Nov. 18, 2020, PCT No. PCT/JP2020/042932
§ 371(c)(1), (2) Date May 17, 2022,
PCT Pub. No. WO2021/100741, PCT Pub. Date May 27, 2021.
Claims priority of application No. 2019-211806 (JP), filed on Nov. 22, 2019.
Prior Publication US 2023/0339720 A1, Oct. 26, 2023
Int. Cl. B65H 75/14 (2006.01); B65H 35/00 (2006.01)
CPC B65H 75/14 (2013.01) [B65H 75/145 (2013.01); B65H 35/002 (2013.01); B65H 2701/377 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A reel member, comprising:
a winding core around which an adhesive film is to be wound;
a pair of reel flanges provided on both sides of the winding core; and
a plurality of ribs formed on an inner surface of at least one reel flange of the pair of reel flanges, protruding from the inner surface, and extending from a center side to a peripheral edge side of the at least one reel flange,
wherein at least one rib of the plurality of ribs has a top portion and a base portion and a width of the top portion of the at least one rib in contact with the adhesive film is narrower than a width of the base portion of the at least one rib in contact with the inner surface in cross-sectional view,
and wherein the at least one rib of the plurality of ribs extends to a position facing the winding core, and
wherein the at least one rib comprises a section capable of facing the wound adhesive film and a section extending to a position facing the winding core, wherein a height and cross-sectional shape of the section capable of facing the wound adhesive film are different from a height and cross-sectional shape of the section extending to a position facing the winding core.