IP Library Granted Patent US 11,780,213
Granted Patent B2
US 11,780,213 · App. 16/175,955 · Granted Oct 10, 2023

Low carbon footprint thermoplastic films including recycled materials

Inventors: Steven Sargeant (Elizabethtown, KY); Krishna Kant Sharma (Elizabethtown, KY); Aarushi Srivastava (New Delhi, IN); Rajeev Parashar (New Delhi, IN); Bikaram Kholiya (Elizabethtown, KY)
Assignee: Flex Films (USA) Inc.
B32B27/08B32B27/18B32B27/20B32B27/36B32B7/00B32B2250/03B32B2250/244B32B2250/40B32B2255/10B32B2255/205B32B2255/26B32B2264/102B32B2305/70B32B2307/514B32B2307/518B32B2307/714B32B2307/732B32B2367/00B32B2439/70B65D65/40Y02P20/143Y10T428/31681Y10T428/31786Y10T428/31797
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 11,780,213
App. No.
16/175,955
Granted
Oct 10, 2023
Kind
B2
Abstract

A thermoplastic film includes a core layer having a recycled polyethylene terephthalate (PET) based resin having an intrinsic viscosity of greater than about 0.7 and having a polydispersity index of greater than about 3.0. The thermoplastic film comprises about 90% to about 100% by weight of the recycled PET resin.

Claims (20)

1. A thermoplastic film, comprising:

a core layer comprising a recycled polyethylene terephthalate based resin having an intrinsic viscosity of greater than or equal to 0.7 and having a polydispersity index of greater than or equal to 3.5;

wherein the thermoplastic film comprises a biaxially-oriented PET film having about 90% to about 100% by weight of the recycled PET based resin.

2. The thermoplastic film of claim 1 , wherein the core layer has a first side and a second side opposite the first side, and wherein the thermoplastic film further comprises a skin layer positioned on the first side, the second side, or both the first side and the second side of the core layer.

3. The thermoplastic film of claim 2 , wherein the skin layer includes a virgin PET based resin.

4. The thermoplastic film of claim 3 , wherein the skin layer includes silica.

5. The thermoplastic film of claim 3 , wherein the virgin PET based resin comprises a PET copolymer.

6. The thermoplastic film of claim 1 , further comprising an acrylic coating.

7. The thermoplastic film of claim 6 , wherein the acrylic coating has a thickness of 0.05 to 0.3 μm.

8. The thermoplastic film of claim 1 , wherein the film is metallized.

9. The thermoplastic film of claim 1 , wherein the recycled PET based resin comprises a PET copolymer.

10. A biaxially-oriented polyethylene terephthalate thermoplastic film, comprising:

a recycled polyethylene terephthalate (PET) resin, wherein the recycled PET based resin has an intrinsic viscosity of greater than or equal to 0.7 and a polydispersity index of greater than 3.5; and

an additive masterbatch for increasing the degradation rate of the thermoplastic film,

wherein the thermoplastic film comprises about 90% to about 100% by weight of the recycled PET based resin.

11. The biaxially-oriented polyethylene terephthalate thermoplastic film of claim 10 , wherein the recycled PET based resin forms a core layer of the film.

12. The_biaxially-oriented polyethylene terephthalate thermoplastic film of claim 11 , further comprising one or more skin layers positioned on the core layer, the one or more skin layers comprising virgin PET based resins.

13. The biaxially-oriented polyethylene terephthalate thermoplastic film of claim 12 , wherein the skin layer includes silica.

14. The biaxially-oriented polyethylene terephthalate thermoplastic film of claim 10 , further comprising an acrylic coating.

15. The biaxially-oriented polyethylene terephthalate_thermoplastic film of claim 10 , wherein the film is metallized.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 16, 2019
From: SARGEANT, STEVEN; SHARMA, KRISHNA KANT; SRIVASTAVA, AARUSHI; PARASHAR, RAJEEV; KHOLIYA, BIKARAM
To: FLEX FILMS (USA) INC.
Reel/Frame 049769/0302 →
Continuity (2)
Provisional Application 62579288 · Oct 31, 2017
Related Publication 20190126599A1 · May 2, 2019