Polyolefin films containing recycled polyolefin material

Patent metadata

Field	Value
Publication number	US-11795284-B2
Application number	US-202117539538-A
Country	US
Kind code	B2
Filing date	Dec 1, 2021
Priority date	Dec 1, 2021
Publication date	Oct 24, 2023
Grant date	Oct 24, 2023

Abstract

A polyolefin film having between about 10% and about 95%, by weight of the polyolefin film, of recycled polyolefin is described. The polyolefin film has an Average Hole Count between about 0.0 and about 10.0, according to the Gel Count Test Method. The polyolefin film has an Average Gel Count between about 0.0 and about 100.0, according to the Gel Count Test Method. The polyolefin film has an Average Relative Gel Height between about 0.0% and about 150.0%. The polyolefin film has a Total Spot Count between about 0.0 and about 100.0, according to the Gel Count Test Method.

First claim

What is claimed is:

1. A polyolefin film comprising a first surface and a second surface;
wherein the polyolefin film comprises between about 10% and about 95%, by weight of the polyolefin film, of recycled polyolefin;
wherein the polyolefin film has an Average Hole Count between about 0.0 and about 10.0, according to a Gel Count Test Method;
wherein the polyolefin film has an Average Gel Count between about 0.0 and about 100.0, according to the Gel Count Test Method;
wherein the polyolefin film has an Average Relative Gel Height between about 0.0% and about 150.0%; and
wherein the polyolefin film has a Total Spot Count between about 0.0 and about 100.0, according to the Gel Count Test Method.

2. The polyolefin film of claim 1 , wherein the first surface of the polyolefin film comprises printed graphics.

3. The polyolefin film of claim 1 , wherein the second surface of the polyolefin film is devoid of printed graphics.

4. The polyolefin film of claim 1 having an Average Gel Height between about 0.00 mm and about 150.00 mm, according to the Gel Count Test Method.

5. The polyolefin film of claim 1 , comprising at least one of:
a) less than 1,000 μg/kg of isononylphenol, according to a Trace Chemicals Test Method;
b) less than 75 ng/kg of PCB 77, according to the Trace Chemicals Test Method;
c) less than 2,000 ng/kg of PCB 118, according to the Trace Chemicals Test Method;
d) less than 45 ng/kg of OCDD, according to the Trace Chemicals Test Method;
e) less than 1.8 ng/kg of OCDF, according to the Trace Chemicals Test Method;
f) less than 2,500 μg/kg of bisphenol A, according to the Trace Chemicals Test Method; and
g) less than 1,000 μg/kg of diisononyl phthalate, according to the Trace Chemicals Test Method.

6. The polyolefin film of claim 1 , wherein the recycled polyolefin comprises at least one of:
a) less than 10,000 μg/kg of isononylphenol, according to a Trace Chemicals Test Method;
b) less than 750 ng/kg of PCB 77, according to the Trace Chemicals Test Method;
c) less than 20,000 ng/kg of PCB 118, according to the Trace Chemicals Test Method;
d) less than 450.0 ng/kg of OCDD, according to the Trace Chemicals Test Method;
e) less than 18 ng/kg of OCDF, according to the Trace Chemicals Test Method;
f) less than 25,000 μg/kg of bisphenol A, according to the Trace Chemicals Test Method; and
g) less than 5,000 μg/kg of diisononyl phthalate, according to the Trace Chemicals Test Method.

7. The polyolefin film of claim 1 , wherein the recycled polyolefin comprises post-consumer polyolefin material.

8. The polyolefin film of claim 7 , wherein the post-consumer polyolefin material is obtained from a high-custody sourcing method.

9. The polyolefin film of claim 1 , wherein the recycled polyolefin comprises post-industrial polyolefin material.

10. The polyolefin film of claim 1 , wherein the recycled polyolefin consists of post-consumer material.

11. The polyolefin film of claim 10 , wherein the post-consumer material is obtained from a high-custody sourcing method.

12. The polyolefin film of claim 1 , wherein the recycled polyolefin comprises at least one of: LLDPE, LDPE, MDPE, HDPE, polypropylene-ethylene interpolymer and copolymers having at least one olefinic constituent, and mixtures thereof.

13. A package comprising the polyolefin film of claim 1 , wherein the package at least partially encloses a consumer product.

14. The package of claim 13 , wherein the first surface of the polyolefin film forms an outer surface facing away from the consumer product, and wherein polyolefin film has an Outer Surface Spot Count of between about 0.0 and about 100.0, according to the Gel Count Test Method.

15. The package of claim 13 , wherein the second surface of the polyolefin film forms an inner surface facing toward the consumer product, and wherein the polyolefin film has an Inner Surface Spot Count of between about 0.0 and about 100.0, according to the Gel Count Test Method.

16. The package of claim 13 , wherein the consumer product is paper towels or toilet paper.

17. The package of claim 13 , wherein the consumer product is an absorbent article.

18. The package of claim 17 , wherein the package has an in-bag stack height in a range of between about 70 mm to about 100 mm, according to an In-Bag Stack Height Test.

19. The package of claim 17 , wherein the absorbent article is a diaper or an absorbent pant.

20. The package of claim 17 , wherein the absorbent article is a sanitary napkin.

21. The package of claim 13 , wherein at least a portion of the package is in direct contact with the consumer product.

22. A package comprising the polyolefin film of claim 1 , wherein the package at least partially encloses a good other than a consumer product.

23. The package of claim 22 , wherein at least a portion of the package is in direct contact with the good other than a consumer product.

24. An overwrap formed from the polyolefin film of claim 1 , wherein the overwrap is disposed proximate to an exterior surface of a primary package.

25. A polyolefin film comprising a first surface and a second surface;
wherein the polyolefin film comprises between about 35% and about 95%, by weight of the polyolefin film, of recycled polyolefin;
wherein the polyolefin film has an Average Hole Count between about 0.0 and about 10.0, according to a Gel Count Test Method;
wherein the polyolefin film has an Average Gel Count between about 0.0 and about 100.0, according to the Gel Count Test Method;
wherein the polyolefin film has an Average Relative Gel Height between about 0.0% and about 150.0%; and
wherein the polyolefin film has a Total Spot Count between about 0.0 and about 100.0, according to the Gel Count Test Method.

26. The polyolefin film of claim 25 , comprising at least one of:
a) less than 1,000 μg/kg of isononylphenol, according to a Trace Chemicals Test Method;
b) less than 75 ng/kg of PCB 77, according to the Trace Chemicals Test Method;
c) less than 2,000 ng/kg of PCB 118, according to the Trace Chemicals Test Method;
d) less than 45 ng/kg of OCDD, according to the Trace Chemicals Test Method;
e) less than 1.8 ng/kg of OCDF, according to the Trace Chemicals Test Method;
f) less than 2,500 μg/kg of bisphenol A, according to the Trace Chemicals Test Method; and
g) less than 1,000 μg/kg of diisononyl phthalate, according to the Trace Chemicals Test Method.

27. A package comprising the polyolefin film of claim 25 , wherein the package at least partially encloses a product.

Assignees

• Procter & Gamble

Inventors

• Kohlweyer Christian
• Weisman Paul Thomas
• Remus Michael
• Kramkowski Peter

Classifications

• C08L2203/16

  used for films · CPC title

• C08J5/18 Primary

  Manufacture of films or sheets · CPC title

• C08J2323/06

  Polyethene · CPC title

• C08J2323/08

  Copolymers of ethene (C08J2323/16 takes precedence) · CPC title

• C08L23/06

  Polyethylene · CPC title