US 11,891,479 B2
Thermoformed packaging and methods of forming the same
Wade Jackson Kammauff, Charlottesville, VA (US); Seth Thomas Stewart, Charlottesville, VA (US); and Carlos Daniel Stagnaro, Charlottesville, VA (US)
Assigned to KLÖCKNER PENTAPLAST OF AMERICA, INC., Gordonsville, VA (US)
Filed by KLÖCKNER PENTAPLAST OF AMERICA, INC., Gordonsville, VA (US)
Filed on Feb. 13, 2023, as Appl. No. 18/168,238.
Application 18/168,238 is a continuation of application No. 17/528,980, filed on Nov. 17, 2021, granted, now 11,603,432.
Claims priority of provisional application 63/115,297, filed on Nov. 18, 2020.
Prior Publication US 2023/0183422 A1, Jun. 15, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C08G 63/672 (2006.01); B29C 48/08 (2019.01); B29C 48/18 (2019.01); B29C 33/42 (2006.01); C08G 63/183 (2006.01); C08G 63/553 (2006.01); B29K 67/00 (2006.01); B29K 105/00 (2006.01); B29L 31/00 (2006.01)
CPC C08G 63/672 (2013.01) [B29C 33/42 (2013.01); B29C 48/08 (2019.02); B29C 48/18 (2019.02); C08G 63/183 (2013.01); C08G 63/553 (2013.01); B29K 2067/003 (2013.01); B29K 2105/256 (2013.01); B29L 2031/7164 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A thermoformed article comprising a polymer film and having one or more thermoformed cavities contained therein, wherein the polymer film comprises a polymer blend of 50 wt % to 95 wt % of amorphous polyethylene terephthalate (APET) and 5 wt % to 50 wt % of a copolyester that comprises (a) dicarboxylic acid residues comprising polyethylene terephthalate residues and (b) diol residues comprising (i) ethylene glycol residues and (ii) one or more additional diol monomer residues selected from neopentyl glycol residues, 1,4-cyclohexanedimethanol residues, or diethylene glycol residues, wherein the polymer film exhibits a crystallization time at 120° C. of at least 2.5 minutes as measured by differential scanning calorimetry (DSC).