US 12,454,103 B2
Induction heat sealable closure liner configured for paper or plastic recycling stream, and induction heat seal application device
Munish Shah, Sylvania, OH (US); Dennis Carespodi, Winston-Salem, NC (US); and Tom Vlieger, Zaventem (BE)
Assigned to Tekni-Plex, Inc., Wayne, PA (US)
Filed by Tekni-Plex, Inc., Wayne, PA (US)
Filed on Nov. 13, 2023, as Appl. No. 18/507,329.
Prior Publication US 2025/0153445 A1, May 15, 2025
Int. Cl. B29C 65/36 (2006.01); B29C 65/00 (2006.01); B65D 41/02 (2006.01); B65D 65/40 (2006.01); B65D 77/20 (2006.01)
CPC B29C 65/362 (2013.01) [B29C 66/851 (2013.01); B65D 41/02 (2013.01); B65D 65/40 (2013.01); B65D 77/2024 (2013.01); B65D 2565/385 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An apparatus for induction heat sealing a liner to a rim of a container comprising:
an induction heat sealable foil-less and fully recyclable liner (10) made of plastic or paper recyclable in a respective plastic or paper recycle stream and a heat seal layer that is also recyclable in the respective plastic or paper recycle stream;
wherein the liner comprises:
a paperboard layer (105) in a thickness range of 2 to 27 mils, and/or a paperboard layer in a range of 25 lbs/ream to 350 lbs/ream, where a ream comprises 3,000 square feet; and
a heat seal layer (106) in a thickness range of 0.15 to 3.5 mils, and/or a heat seal layer in a range of 2 lbs/ream to 50 lbs/ream, where a ream comprises 3,000 square feet;
a removable and reusable induction heat seal application device (110) comprising a metal disk (130D), a metal ring (130R) or a metal cap (120M),
wherein the reusable application device (110) is configured for positioning above the liner (10) and a container rim (22L) while induction heat sealing the liner to the rim, and the device (110) is thereafter removable from the liner-sealed rim to allow a container cap (40) to be applied over the liner and rim, thus providing a fully recyclable liner (10) that is recyclable in a respective plastic or paper recycle stream.