US 11,939,131 B2
Recyclable blister package
Robin Van Landeghem, Deinze (BE)
Assigned to Tekni-Plex,. Inc., Wayne, PA (US)
Filed by Tekni-Plex, Inc., Wayne, PA (US)
Filed on Jun. 2, 2022, as Appl. No. 17/830,461.
Claims priority of provisional application 63/196,577, filed on Jun. 3, 2021.
Prior Publication US 2022/0388749 A1, Dec. 8, 2022
Int. Cl. B65D 75/32 (2006.01); B65D 65/40 (2006.01); B65D 75/36 (2006.01)
CPC B65D 75/327 (2013.01) [B65D 65/40 (2013.01); B65D 75/367 (2013.01); B65D 2565/386 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A halogen-free recyclable moisture barrier blister package comprising a lidding film and a base, the base having a plurality of base cavities each configured to hold an individual product portion, the lidding film and base being heat sealed together about a perimeter of each of the plurality of base cavities, and:
the base comprises a thermoformed sheet having one or more layers of cyclic olefin copolymer (COC) in combination with one or more layers of polyolefin;
the lidding film comprises a laminated or extruded sheet having one or more layers of polyolefin, or one or more layers of polyolefin in combination with one or more layers of COC;
wherein the lidding film and base have adjacent polyolefin layers heat sealing the lidding film around the perimeter of each base cavity;
the combination of the base and the lidding film is recyclable in a single plastic polyolefin waste stream based on the polyolefin layer(s) of the lidding film and/or the base;
the package has a moisture vapor transmission rate (MVTR) measured via a 5-week weight gain test at 40° C. and 75% relative humidity (RH) as defined in ASTM D7709 of no greater than 2 milligram per cavity per 24 hours for a standard capsule size 0 cavity;
wherein the polyolefin is polypropylene (PP) or polyethylene (PE), and the lidding film and base are recyclable in a single plastic waste stream, namely a PP or PE plastic waste stream depending on the type of polyolefin (PP or PE).