US 12,084,230 B2
Multi-film thermoplastic structures and bags having visually-distinct contact areas and methods of making the same
Sarah Steenblock, Cincinnati, OH (US); Matthew W. Waldron, West Chester, OH (US); Shaun T. Broering, Fort Thomas, KY (US); and Lehai Minh Pham Vu, Cincinnati, OH (US)
Assigned to The Glad Products Company, Oakland, CA (US)
Appl. No. 17/441,118
Filed by THE GLAD PRODUCTS COMPANY, Oakland, CA (US)
PCT Filed Mar. 23, 2020, PCT No. PCT/US2020/024143
§ 371(c)(1), (2) Date Sep. 20, 2021,
PCT Pub. No. WO2020/198107, PCT Pub. Date Oct. 1, 2020.
Claims priority of provisional application 62/825,520, filed on Mar. 28, 2019.
Prior Publication US 2022/0161979 A1, May 26, 2022
Int. Cl. B65D 33/28 (2006.01); B31B 70/14 (2017.01); B31B 70/64 (2017.01); B31B 70/81 (2017.01); B31B 155/00 (2017.01); B31B 170/20 (2017.01); B32B 7/05 (2019.01); B32B 27/08 (2006.01); B32B 27/20 (2006.01); B32B 37/00 (2006.01); B32B 37/10 (2006.01); B32B 38/06 (2006.01); B65D 27/00 (2006.01); B65D 27/24 (2006.01); B65D 30/08 (2006.01); B65D 65/40 (2006.01); B65F 1/00 (2006.01)
CPC B65D 33/28 (2013.01) [B31B 70/649 (2017.08); B32B 7/05 (2019.01); B32B 27/08 (2013.01); B32B 27/20 (2013.01); B32B 37/0076 (2013.01); B32B 37/10 (2013.01); B32B 38/06 (2013.01); B65D 27/005 (2013.01); B65D 27/24 (2013.01); B65D 31/02 (2013.01); B65D 65/406 (2013.01); B65F 1/002 (2013.01); B31B 70/146 (2017.08); B31B 70/8134 (2017.08); B31B 2155/00 (2017.08); B31B 2170/20 (2017.08); B32B 2250/02 (2013.01); B32B 2250/03 (2013.01); B32B 2250/24 (2013.01); B32B 2307/31 (2013.01); B32B 2307/4026 (2013.01); B32B 2307/54 (2013.01); B32B 2307/748 (2013.01); B32B 2398/20 (2013.01); B32B 2439/46 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A multi-film thermoplastic structure comprising:
a first thermoplastic film having a first appearance;
a second thermoplastic film having a second appearance created by a pigment, the first appearance differing from the second appearance;
one or more separated areas where the first thermoplastic film and the second thermoplastic film are unbonded; and
at least one visually-distinct contact area between the first thermoplastic film to the second thermoplastic film, wherein:
the at least one visually-distinct contact area, when viewed from the first thermoplastic film side of the multi-film thermoplastic structure, has the second appearance, the at least one visually-distinct contact area is configured to separate before either of the first thermoplastic film or the second thermoplastic film fails when subjected to peel forces,
portions of the first and second thermoplastic films in the at least one visually-distinct contact area are flat and un-deformed, and
portions of the first thermoplastic film in the at least one visually-distinct contact area exhibits visual qualities comprising a Delta E between 1 and 10.3 points higher compared to portions of the first thermoplastic film not in the at least one visually-distinct contact area and that are unbonded to the second thermoplastic film.