US 12,280,917 B2
Coextruded polymeric article and method of making the same
Michael B. Runge, Stillwater, MN (US); Vasav Sahni, St. Paul, MN (US); Ronald W. Ausen, St. Paul, MN (US); Scott M. Tapio, Falcon Heights, MN (US); and William J. Kopecky, Hudson, WI (US)
Assigned to 3M Innovative Properties Company, St. Paul, MN (US)
Appl. No. 17/781,144
Filed by 3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US)
PCT Filed Dec. 4, 2020, PCT No. PCT/IB2020/061545
§ 371(c)(1), (2) Date May 31, 2022,
PCT Pub. No. WO2021/116864, PCT Pub. Date Jun. 17, 2021.
Claims priority of provisional application 62/987,439, filed on Mar. 10, 2020.
Claims priority of provisional application 62/945,564, filed on Dec. 9, 2019.
Prior Publication US 2022/0411135 A1, Dec. 29, 2022
Int. Cl. B65D 33/25 (2006.01); B29C 48/12 (2019.01); B29C 48/21 (2019.01); B29K 23/00 (2006.01); B29L 5/00 (2006.01); B29L 31/00 (2006.01)
CPC B65D 33/2541 (2013.01) [B29C 48/12 (2019.02); B29C 48/21 (2019.02); B29K 2023/06 (2013.01); B29K 2023/22 (2013.01); B29L 2005/00 (2013.01); B29L 2031/7288 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A polymeric sheet comprising:
a base sheet having a first surface and a second surface opposite the first surface, and
a multiplicity of spaced rails projecting from the first surface of the base sheet;
wherein the rails comprise a stem portion attached to and substantially upright from the first surface of the base sheet and a top portion on the distal end of the stem portion opposite the base sheet, the top portion comprising a first surface opposite the base sheet and a second surface facing the first surface of the base sheet and the rails having a length greater than the width of the stem portions,
wherein the first surface of the base sheet, the second surface of the top portion and the surface of the stem portion defines a cavity with walls; and
an adhesive coated on at least a portion of the cavity walls, wherein the first surface of the top portion is adhesive free.