US 12,403,679 B2
Laminate medical film with thermochromic ink layer
Tommy Smith, Mullingar (IE); and Lee Hyland, Enfield (IE)
Assigned to OLIVER HEALTHCARE PACKAGING COMPANY, Grand Rapids, MI (US)
Filed by OLIVER HEALTHCARE PACKAGING COMPANY, Grand Rapids, MI (US)
Filed on Sep. 8, 2023, as Appl. No. 18/463,729.
Claims priority of provisional application 63/375,107, filed on Sep. 9, 2022.
Prior Publication US 2024/0083149 A1, Mar. 14, 2024
Int. Cl. B32B 7/12 (2006.01); B32B 5/02 (2006.01); B32B 27/08 (2006.01); B32B 27/12 (2006.01); B32B 27/32 (2006.01); B32B 37/12 (2006.01); B65D 75/26 (2006.01)
CPC B32B 27/08 (2013.01) [B32B 5/022 (2013.01); B32B 7/12 (2013.01); B32B 27/12 (2013.01); B32B 27/32 (2013.01); B32B 37/12 (2013.01); B65D 75/26 (2013.01); B32B 2255/10 (2013.01); B32B 2262/0253 (2013.01); B32B 2307/308 (2013.01); B32B 2307/4023 (2013.01); B32B 2307/412 (2013.01); B32B 2307/7376 (2023.05); B32B 2323/04 (2013.01); B32B 2439/46 (2013.01); B32B 2439/80 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A package for an article comprising:
a laminate film having edges, the laminate film including:
a barrier layer forming a first side of the laminate film,
a sealing layer forming a second side of the laminate film opposite the first side,
a bonding layer bonding the sealing layer and barrier layer, and
a thermochromic ink layer intermediate the barrier and sealing layers, the thermochromic ink layer including thermochromic ink trapped between the barrier layer and sealing layer, the thermochromic ink having a first visual appearance and adapted to permanently change to a second visual appearance, which is different from the first visual appearance, upon exposure to a pre-determined temperature; and
a substrate,
wherein the laminate film overlies the substrate with the sealing layer facing the substrate, at least one edge of the laminate film secured to the substrate via a seal to form an open pouch into which the article can be subsequently inserted, and;
wherein the laminate film shows the second visual appearance of the thermochromic ink at the seal and the first visual appearance other than at the seal, the first visual appearance being clear and the second visual appearance comprising a color.