US 12,441,573 B2
Flat wound tape article and method
Yasuo Sudo, Tokyo (JP); Keiichiro Horikoshi, Yamagata (JP); and Hidekuni Takano, Tokyo (JP)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Appl. No. 17/628,316
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Jul. 30, 2020, PCT No. PCT/IB2020/057204
§ 371(c)(1), (2) Date Jan. 19, 2022,
PCT Pub. No. WO2021/019490, PCT Pub. Date Feb. 4, 2021.
Claims priority of provisional application 62/881,425, filed on Aug. 1, 2019.
Prior Publication US 2022/0250865 A1, Aug. 11, 2022
Int. Cl. B65H 35/00 (2006.01); B65H 75/06 (2006.01)
CPC B65H 35/0033 (2013.01) [B65H 75/06 (2013.01); B65H 2301/4127 (2013.01); B65H 2701/535 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A tape article comprising
a flat core having a bend strength of no less than 0.4 N/mm and a strain stress curve comprising a liner portion with a slope of 0.04 N/mm2 or greater when tested according to JIS K7171, the core comprising
a first major surface and an opposing second major surface,
a first core edge and an opposing second core edge, the second core edge being essentially parallel to the first core edge,
a core width defined by the shortest distance from the first edge to the second edge, and
a third core edge and an opposing fourth core edge; and
a tape roll comprising
a tape, the tape comprising
a backing material having first side and opposing second side, and
a first tape edge and opposing second tape edge, and
a tape roll width defined by the shortest distance between the first tape edge and the second tape edge; wherein
the tape is in a wound disposition in successive layers of tape around the core from the third core edge to the fourth core edge,
the core width is greater than the tape roll width,
the first core edge extends beyond the first tape edge, and
the second core edge extends beyond the second tape edge.