US 12,264,243 B2
Biaxially oriented formable polyester film
Pranay Kothari, Noida (IN); and Krishna Reddy, Noida (IN)
Assigned to Polyplex Corporation Limited, Noida (IN)
Appl. No. 17/266,953
Filed by Polyplex Corporation Limited, Noida (IN)
PCT Filed May 22, 2019, PCT No. PCT/IN2019/050406
§ 371(c)(1), (2) Date Feb. 8, 2021,
PCT Pub. No. WO2020/031197, PCT Pub. Date Feb. 13, 2020.
Claims priority of application No. 201811029971 (IN), filed on Aug. 9, 2018.
Prior Publication US 2021/0301126 A1, Sep. 30, 2021
Int. Cl. C08L 67/02 (2006.01); B29C 48/00 (2019.01); B29C 48/08 (2019.01); B29C 48/88 (2019.01); B29C 55/00 (2006.01); B29C 55/14 (2006.01); B29C 71/02 (2006.01); B32B 7/12 (2006.01); B32B 15/09 (2006.01); B32B 15/20 (2006.01); B32B 27/08 (2006.01); B32B 27/20 (2006.01); B32B 27/36 (2006.01); B65D 65/40 (2006.01); C08J 5/18 (2006.01); C08J 7/04 (2020.01); C08J 7/044 (2020.01); B29K 67/00 (2006.01); B29K 509/02 (2006.01); B29L 7/00 (2006.01); B29L 31/00 (2006.01)
CPC C08L 67/02 (2013.01) [B29C 48/0018 (2019.02); B29C 48/022 (2019.02); B29C 48/08 (2019.02); B29C 48/914 (2019.02); B29C 55/005 (2013.01); B29C 55/14 (2013.01); B29C 71/02 (2013.01); B32B 7/12 (2013.01); B32B 15/09 (2013.01); B32B 15/20 (2013.01); B32B 27/08 (2013.01); B32B 27/20 (2013.01); B32B 27/36 (2013.01); B65D 65/40 (2013.01); C08J 5/18 (2013.01); C08J 7/0427 (2020.01); C08J 7/044 (2020.01); B29C 2071/022 (2013.01); B29K 2067/003 (2013.01); B29K 2509/02 (2013.01); B29L 2007/008 (2013.01); B29L 2031/712 (2013.01); B32B 2250/03 (2013.01); B32B 2250/244 (2013.01); B32B 2250/40 (2013.01); B32B 2255/10 (2013.01); B32B 2255/20 (2013.01); B32B 2255/26 (2013.01); B32B 2264/1021 (2020.08); B32B 2270/00 (2013.01); B32B 2272/00 (2013.01); B32B 2307/21 (2013.01); B32B 2307/518 (2013.01); B32B 2307/558 (2013.01); B32B 2439/70 (2013.01); B32B 2439/80 (2013.01); C08J 2367/02 (2013.01); C08J 2433/00 (2013.01); C08J 2467/02 (2013.01); C08J 2475/00 (2013.01); C08L 2203/16 (2013.01); C08L 2203/30 (2013.01); C08L 2205/025 (2013.01); C08L 2207/20 (2013.01)] 36 Claims
OG exemplary drawing
 
1. A biaxially oriented formable polyester film comprising
layer A comprising a polyethylene terephthalate copolymer and inorganic filler silica having dosage of greater than 1000 to 3500 ppm;
layer B comprising 90 to 60 wt. % polyethylene terephthalate copolymer and 10 to 40% recycled-PET; wherein layer B has a thickness of 75% to 85% of the total thickness of the film;
wherein the film comprises two outer layers made of layer A, and each layer A has a thickness of 7.5% to 12.5% of the total thickness of the film;
wherein the film has a thickness in the range of 8 to 300 micron; and
wherein the film exhibits a dart impact of 150 gf or greater and puncture resistance of 4.0N or greater.