US 12,103,248 B1
Systems and methods of bubble closure formation for packaging
Mark Steele, New Prague, MN (US)
Filed by Mark Steele, New Prague, MN (US)
Filed on Mar. 22, 2024, as Appl. No. 18/613,517.
Claims priority of provisional application 63/454,016, filed on Mar. 22, 2023.
Int. Cl. B29C 65/74 (2006.01); B29C 65/00 (2006.01); B29L 31/56 (2006.01)
CPC B29C 66/851 (2013.01) [B29C 65/74 (2013.01); B29C 66/438 (2013.01); B29C 66/712 (2013.01); B29C 66/72 (2013.01); B29L 2031/565 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method of forming a bubble valve device, comprising:
feeding a first film layer web and a second film layer web into a channel seal station to form one or more channel seals, defining one or more fluid channels, between the first film layer web and the second film layer web, and to seal the first film layer web and the second film layer web together to define a combined film layer web;
feeding the combined film layer web into a forming station to create a plurality of bubble pockets in both the first film layer web and the second film layer web at a same time, wherein the forming station includes a plurality of cavities to receive the combined film layer web and form the plurality of bubble pockets; and
feeding the combined film layer web, including the formed plurality of bubble pockets, into a lidding station to create a bubble valve device web including a plurality of formed bubble valve devices, wherein a lidding film layer web is sealed under the plurality of bubble pockets formed in the combined film layer web to trap a gas between the combined film layer web and the lidding film layer web within the plurality of bubble pockets.