IP Library › Granted Patent US 7,879,452
Granted Patent B2
US 7,879,452 · App. 11/433,253 · Granted Feb 1, 2011

Elastomeric films with brittle nonblocking skins

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Quick Facts
Patent No.
US 7,879,452
App. No.
11/433,253
Granted
Feb 1, 2011
Kind
B2
Abstract

A nonblocking multilayer elastomeric-film comprises a first brittle polymer film layer bonded to a second elastomeric polymer film layer. The multilayer film is activatable to fracture the first brittle polymer layer and to render the multilayer film elastomeric.

Claims (41)

1. A nonblocking multilayer film, comprising a first brittle polymer film layer which cannot be stretched more than 110% of its original dimension without breaking or cracking and a second elastomeric polymer film layer, wherein the brittle polymer is selected from the group consisting of polystyrene, acrylate polymers, polycarbonates, and combinations thereof and the first polymer layer is bonded to the first surface of the second polymer film layer, and wherein the multilayer film is activatable to fracture the first brittle polymer film layer and to render the multilayer film elastomeric, which can be stretched to at least about 150% of its original dimension, and which then recovers no more than 120% of its original dimension.

2. The nonblocking multilayer film of claim 1 wherein the first polymer film layer and the second polymer film layer are bonded by coextrusion.

3. The nonblocking multilayer film layer of claim 1 wherein the first polymer film layer and the second polymer film layer are bonded by extrusion coating.

4. The nonblocking multilayer film of claim 3 wherein the first polymer film layer is extrusion coated onto the second polymer film layer.

5. The nonblocking multilayer film of claim 3 wherein the second polymer film layer is extrusion coated onto the first polymer film layer.

6. The nonblocking multilayer film of claim 1 wherein the first polymer film layer and the second polymer film layer are bonded by a method selected from the group consisting of adhesive bonding, thermal bonding, ultrasonic bonding, calender bonding, point bonding, and combinations thereof.

7. The nonblocking multilayer film of claim 1 , further comprising activating the multilayer film to fracture the first polymer film layer and to render the multilayer film elastomeric.

8. The nonblocking multilayer film of claim 7 wherein the multilayer film is activated by stretching.

9. The nonblocking multilayer film of claim 8 wherein the multilayer film is stretched by a method selected from the group consisting of incremental stretching, machine-direction orientation, tentering, and combinations thereof.

10. The nonblocking multilayer film of claim 1 wherein the second polymer film layer comprises an elastomeric polymer selected from the group consisting of block copolymers of vinyl arylene and conjugated diene monomers, natural rubbers, polyurethane rubbers, polyester rubbers, elastomeric polyolefins, elastomeric polyamides, and blends thereof.

11. The nonblocking multilayer film of claim 1 wherein the second polymer film layer comprises a blend of elastomeric polymers and high-impact polystyrene.

12. The nonblocking multilayer film of claim 1 wherein the second polymer film layer comprises a multilayer elastomeric film layer.

13. The nonblocking multilayer film of claim 1 , further comprising bonding a third polymer film layer comprising a brittle polymer to the multilayer film on the second surface of the second polymer film layer.

14. The nonblocking multilayer film of claim 13 wherein the third polymer film layer and the multilayer film are bonded by a method selected from the group consisting of coextrusion, extrusion coating, adhesive bonding, thermal bonding, ultrasonic bonding, calender bonding, point bonding, and combinations thereof.

15. The nonblocking multilayer film of claim 1 , further comprising bonding the multilayer film to a third substrate layer.

16. The nonblocking multilayer film of claim 15 , wherein the third substrate layer comprises a polymer film layer, nonwoven fabric, paper product, woven fabric, knitted fabric, scrim, netting, or combination thereof.

17. The nonblocking multilayer elastomeric film of claim 15 wherein the third substrate layer and the multilayer film are bonded by a method selected from the group consisting of coextrusion, extrusion coating, adhesive bonding, thermal bonding, ultrasonic bonding, calender bonding, point bonding, and combinations thereof.

18. The nonblocking multilayer film of claim 15 , further comprising bonding the multilayer film to a plurality of substrate layers, wherein the plurality of substrate layers comprise one or more substrates selected from the group consisting of a polymer film layer, nonwoven fabric, paper product, woven fabric, knitted fabric, scrim, netting, and combinations thereof.

19. The nonblocking multilayer film of claim 1 , further comprising aperturing the nonblocking multilayer film.

20. A nonblocking multilayer elastomeric film, comprising a first brittle polymer film layer which cannot be stretched more than 110% of its original dimension without breaking or cracking and a second elastomeric polymer film layer, wherein the brittle polymer is selected from the group consisting of polystyrene, acrylate polymers, polycarbonates, and combinations thereof and the first polymer layer is bonded to the first surface of the second polymer film layer, and wherein the multilayer film is activated to fracture the first brittle polymer film layer and to render the multilayer film elastomeric, which can be stretched to at least about 150% of its original dimension, and which then recovers no more than 120% of its original dimension.

21. The nonblocking elastomeric multilayer film of claim 20 wherein the first polymer film layer and the second polymer film layer are bonded by coextrusion.

22. The nonblocking elastomeric multilayer film of claim 20 wherein the first polymer film layer and the second polymer film layer are bonded by extrusion coating.

23. The nonblocking elastomeric multilayer film of claim 22 wherein the first polymer film layer is extrusion coated onto the second polymer film layer.

24. The nonblocking elastomeric multilayer film of claim 22 wherein the second polymer film layer is extrusion coated onto the first polymer film layer.

25. The nonblocking elastomeric multilayer film of claim 22 wherein the first polymer film layer and the second polymer film layer are bonded by a method selected from the group consisting of adhesive bonding, thermal bonding, ultrasonic bonding, calender bonding, point bonding, and combinations thereof.

26. The nonblocking elastomeric multilayer film of claim 20 wherein the multilayer film is activated by stretching.

27. The nonblocking elastomeric multilayer film of claim 20 wherein the multilayer film is stretched by a method selected from the group consisting of incremental stretching, machine-direction orientation, tentering, and combinations thereof.

28. The nonblocking elastomeric multilayer film of claim 20 wherein the second polymer film layer comprises an elastomeric polymer selected from the group consisting of block copolymers of vinyl arylene and conjugated diene monomers, natural rubbers, polyurethane rubbers, polyester rubbers, elastomeric polyolefins, elastomeric polyamides, and blends thereof.

29. The nonblocking elastomeric multilayer film of claim 28 wherein the second polymer film layer comprises a blend of elastomeric polymers and high-impact polystyrene.

30. The nonblocking elastomeric multilayer film of claim 20 wherein the second polymer film layer comprises a multilayer elastomeric film.

31. The nonblocking elastomeric multilayer film of claim 20 , further comprising bonding a third polymer film layer comprising a brittle polymer to the multilayer film on the second surface of the second polymer film.

32. The nonblocking elastomeric multilayer film of claim 31 wherein the third polymer film layer and the multilayer film are bonded by a method selected from the group consisting of coextrusion, extrusion coating, adhesive bonding, thermal bonding, ultrasonic bonding, calender bonding, point bonding, and combinations thereof.

33. The nonblocking elastomeric multilayer film of claim 20 , further comprising bonding the multilayer film to a third substrate layer.

34. The nonblocking elastomeric multilayer film of claim 33 , wherein the third substrate layer comprises a polymer film layer, nonwoven fabric, paper product, woven fabric, knitted fabric, scrim, netting, or combination thereof.

35. The nonblocking elastomeric multilayer elastomeric film of claim 33 wherein the third substrate layer and the multilayer film are bonded by a method selected from the group consisting of coextrusion, extrusion coating, adhesive bonding, thermal bonding, ultrasonic bonding, calender bonding, point bonding, and combinations thereof.

36. The nonblocking elastomeric multilayer film of claim 33 , further comprising bonding the multilayer film to a plurality of substrate layers, wherein the plurality of substrate layers comprise one or more substrates selected from the group consisting of a polymer film layer, nonwoven fabric, paper product, woven fabric, knitted fabric, scrim, netting, and combinations thereof.

37. The nonblocking elastomeric multilayer film of claim 20 , further comprising aperturing the nonblocking elastomeric multilayer film.

38. The nonblocking multilayer film of claim 1 , wherein the first polymer film layer comprises polystyrene.

39. The nonblocking multilayer film of claim 20 , wherein the first polymer film layer comprises polystyrene.

40. The nonblocking multilayer film of claim 15 , wherein the third substrate layer comprises a nonwoven fabric, paper product, woven fabric, knitted fabric, scrim, netting, or combination thereof.

41. The nonblocking elastomeric multilayer film of claim 33 , wherein the third substrate layer comprises a nonwoven fabric, paper product, woven fabric, knitted fabric, scrim, netting, or combination thereof.

Assignments (13)
RELEASE OF PATENT SECURITY INTERESTS Recorded May 5, 2025
From: UBS AG, STAMFORD BRANCH (SUCCESSOR TO CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH), AS TERM LOAN COLLATERAL AGENT; BANK OF AMERICA, N.A., AS ABL COLLATERAL AGENT
To: AVINTIV SPECIALTY MATERIALS, LLC (F/K/A AVINTIV SPECIALTY MATERIALS INC.); BERRY FILM PRODUCTS COMPANY, INC.; BERRY GLOBAL FILMS, LLC; BERRY GLOBAL, INC.; BERRY PLASTICS CORPORATION; BERRY PLASTICS FILMCO, INC.; BERRY PLASTICS HOLDING CORPORATION; BPREX HEALTHCARE PACKAGING INC.; COVALENCE SPECIALTY ADHESIVES LLC; FIBERWEB, INC.; FIBERWEB, LLC; KERR GROUP, LLC; LETICA CORPORATION; LETICA RESOURCES, INC.; PLIANT, LLC; ROLLPAK CORPORATION; F&S TOOL, INC.
Reel/Frame 071168/0009 →
RELEASE OF SECURITY INTEREST Recorded May 2, 2025
From: U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION
To: CLOPAY PLASTIC PRODUCTS COMPANY, INC.; CLOPAY PLASTIC PRODUCTS ACQUISITION COMPANY, INC.
Reel/Frame 071013/0767 →
CHANGE OF NAME Recorded Mar 12, 2018
From: CLOPAY PLASTIC PRODUCTS COMPANY, INC.
To: BERRY FILM PRODUCTS COMPANY, INC.
Reel/Frame 045547/0368 →
SECURITY INTEREST Recorded Feb 16, 2018
From: CLOPAY PLASTIC PRODUCTS COMPANY, INC.
To: CREDIT SUISSE AG, CAYMAN ISLANDS BRANCH; BANK OF AMERICA, N.A.,
Reel/Frame 044954/0164 →
SECURITY INTEREST Recorded Feb 16, 2018
From: CLOPAY PLASTIC PRODUCTS COMPANY, INC.
To: U.S. BANK NATIONAL ASSOCIATION
Reel/Frame 044954/0272 →
RELEASE OF SECURITY INTEREST Recorded Feb 6, 2018
From: JPMORGAN CHASE BANK, N.A.
To: CLOPAY PLASTIC PRODUCTS COMPANY, INC.
Reel/Frame 044843/0208 →
SECURITY AGREEMENT Recorded Apr 21, 2011
From: CLOPAY PLASTIC PRODUCTS COMPANY, INC.
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 026165/0444 →
TERMINATION AND RELEASE OF SECURITY INTEREST IN PATENT RIGHTS Recorded Apr 20, 2011
From: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
To: CLOPAY PLASTIC PRODUCTS COMPANY, INC.
Reel/Frame 026159/0677 →
RELEASE OF SECURITY INTEREST Recorded Mar 21, 2011
From: GOLDMAN SACHS LENDING PARTNERS LLC
To: CLOPAY PLASTIC PRODUCTS COMPANY, INC.
Reel/Frame 025992/0819 →
SECURITY AGREEMENT Recorded Nov 8, 2010
From: CLOPAY BUILDING PRODUCTS COMPANY, INC.; CLOPAY PLASTIC PRODUCTS COMPANY, INC.; AMES TRUE TEMPER, INC.
To: GOLDMAN SACHS LENDING PARTNERS, LLC AS COLLATERAL AGENT
Reel/Frame 025324/0757 →
AMENDED AND RESTATED GRANT OF SECURITY INTEREST IN PATENT RIGHTS Recorded Oct 13, 2010
From: CLOPAY PLASTIC PRODUCTS COMPANY, INC.
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 025126/0748 →
SECURITY AGREEMENT Recorded Jul 7, 2008
From: CLOPAY PLASTIC PRODUCTS COMPANY, INC.
To: JP MORGAN CHASE BANK, N.A.
Reel/Frame 021194/0464 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 12, 2006
From: MUSLET, IYAD
To: CLOPAY PLASTIC PRODUCTS COMPANY, INC.
Reel/Frame 017878/0004 →