Oil-resistant elastic laminates

• US 20040121692A1
• Filed: 12/23/2002
• Published: 06/24/2004
• Est. Priority Date: 12/23/2002
• Status: Abandoned Application

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Inventors: Taylor, Jack Draper, Baumgartner, Stephen Carl, Hancock-Cooke, Catherine Marguerite, Varriale, Monica
• Application Number:
  US10/329,061
• Publication Number:
  US 20040121692A1
• Time in Patent Office: Days
• US Class Current: 442/394
• CPC Class Codes: A61F 13/4902 characterised by the elastic material
• CPC Class Codes: A61L 15/42 Use of materials characterised by their function or physical properties liquid bandages A61L26/00
• CPC Class Codes: B32B 2038/0028 Stretching, elongating
• CPC Class Codes: B32B 2305/20 in the form of a non-woven mat
• CPC Class Codes: B32B 2307/51 Elastic
• CPC Class Codes: B32B 2555/00 Personal care
• CPC Class Codes: B32B 27/12 next to a fibrous or filamentary layer
• CPC Class Codes: B32B 37/1207 Heat-activated adhesive B32B37/04 takes precedence
• CPC Class Codes: B32B 5/26 another layer next to it also being fibrous or filamentary relative arrangement of fibres or filaments of different layers B32B5/12
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: Y10T 442/601 Nonwoven fabric has an elastic quality
• CPC Class Codes: Y10T 442/674 Nonwoven fabric with a preformed polymeric film or sheet
• CPC Class Codes: Y10T 442/68 Melt-blown nonwoven fabric
• CPC Class Codes: Y10T 442/681 Spun-bonded nonwoven fabric
• CPC Class Codes: Y10T 442/696 Including strand or fiber material which is stated to have specific attributes [e.g., heat or fire resistance, chemical or solvent resistance, high absorption for aqueous compositions, water solubility, heat shrinkability, etc.]

Abstract

An oil-resistant elastic laminate including an elastomeric sheet laminated to one or more nonwoven facing sheets with an oil-insensitive adhesive applied to a surface of the elastomeric sheet and/or the facing sheet(s), an oil-insensitive adhesive incorporated within the elastomeric sheet, and/or an oil-insensitive adhesive incorporated within the nonwoven facing sheet(s). The invention further includes methods of making oil-resistant elastic laminates.

Claims

1. An oil-resistant elastic laminate, comprising:

an elastomeric sheet treated with an oil-insensitive adhesive on at least one surface of the elastomeric sheet; and

at least one nonwoven facing sheet laminated to the at least one surface of the elastomeric sheet.

2. The oil-resistant elastic laminate of claim 1, wherein the elastomeric sheet comprises a plurality of elastomeric strands.

3. The oil-resistant elastic laminate of claim 1, wherein the elastomeric sheet comprises an elastomeric film.

4. The oil-resistant elastic laminate of claim 1, wherein the at least one nonwoven facing comprises at least one of a group consisting of spunbond, meltblown, bonded carded web, coform, and combinations thereof.

5. The oil-resistant elastic laminate of claim 1, wherein the elastomeric sheet is treated with the oil-insensitive adhesive on two surfaces of the elastomeric sheet and two nonwoven facing sheets are each laminated to one of the surfaces of the elastomeric sheet.

6. The oil-resistant elastic laminate of claim 1, wherein the oil-insensitive adhesive comprises a hot-melt type adhesive.

7. The oil-resistant elastic laminate of claim 1, wherein the oil-insensitive adhesive comprises a powder at ambient temperatures.

8. The oil-resistant elastic laminate of claim 1, wherein the oil-insensitive adhesive comprises a syndiotactic polypropylene-based composition.

9. An oil-resistant elastic laminate, comprising:

an oil-resistant elastomeric sheet including an oil-insensitive adhesive compounded with a polymer composition; and

at least one nonwoven facing sheet laminated a surface of the oil-resistant elastomeric sheet.

10. The oil-resistant elastic laminate of claim 9, wherein the elastomeric sheet comprises a plurality of elastomeric strands.

11. The oil-resistant elastic laminate of claim 9, wherein the elastomeric sheet comprises an elastomeric film.

12. The oil-resistant elastic laminate of claim 9, wherein the at least one nonwoven facing comprises at least one of a group consisting of spunbond, meltblown, bonded carded web, coform, and combinations thereof.

13. The oil-resistant elastic laminate of claim 9, comprising two nonwoven facing sheets each laminated to a surface of the oil-resistant elastomeric sheet.

14. The oil-resistant elastic laminate of claim 9, wherein the oil-insensitive adhesive comprises a hot-melt type adhesive compounded with the polymer composition.

15. The oil-resistant elastic laminate of claim 9, wherein the oil-insensitive adhesive comprises a powder at ambient temperatures, with the powder located in a matrix of the elastomeric sheet.

16. The oil-resistant elastic laminate of claim 9, wherein the oil-insensitive adhesive comprises a syndiotactic polypropylene-based composition.

17. An oil-resistant elastic laminate, comprising:

at least one oil-resistant nonwoven facing sheet including an oil-insensitive adhesive combined with a nonwoven web; and

an elastomeric sheet laminated to a surface of each of the at least one oil-resistant nonwoven facing sheet.

18. The oil-resistant elastic laminate of claim 17, wherein the elastomeric sheet comprises a plurality of elastomeric strands.

19. The oil-resistant elastic laminate of claim 17, wherein the elastomeric sheet comprises an elastomeric film.

20. The oil-resistant elastic laminate of claim 17, wherein the at least one oil-resistant nonwoven facing sheet comprises at least one of a group consisting of spunbond, meltblown, bonded carded web, coform, and combinations thereof.

21. The oil-resistant elastic laminate of claim 17, comprising two oil-resistant nonwoven facing sheets each laminated to a surface of the elastomeric sheet.

22. The oil-resistant elastic laminate of claim 17, wherein the oil-insensitive adhesive comprises a hot-melt type adhesive.

23. The oil-resistant elastic laminate of claim 17, wherein the oil-insensitive adhesive comprises a powder at ambient temperatures, with the powder located in a matrix of the at least one oil-resistant nonwoven facing sheet.

24. The oil-resistant elastic laminate of claim 17, wherein the oil-insensitive adhesive comprises a syndiotactic polypropylene-based composition.

25. A method of making an oil-resistant elastic laminate, comprising:

applying an oil-insensitive adhesive to at least one of a nonwoven facing sheet and an elastomeric sheet;

aligning the nonwoven facing sheet and the elastomeric sheet with the oil-insensitive adhesive therebetween; and

passing the aligned nonwoven facing sheet and elastomeric sheet through a pressure nip of a calender.

26. The method of claim 25, comprising stretching the elastomeric sheet while bonding the elastomeric sheet to the nonwoven facing sheet.

27. The method of claim 25, further comprising necking the nonwoven facing sheet.

28. The method of claim 25, comprising laminating the elastomeric sheet and the nonwoven facing sheet in a continuous filament stretch-bond laminating process.

29. The method of claim 25, comprising laminating the elastomeric sheet and the nonwoven facing sheet in a vertical filament stretch-bond laminating process.

30. The method of claim 25, comprising meltspraying the oil-insensitive adhesive onto at least one of the nonwoven facing sheet and the elastomeric sheet.

31. The method of claim 25, comprising meltblowing the oil-insensitive adhesive onto at least one of the nonwoven facing sheet and the elastomeric sheet.

32. The method of claim 25, comprising melt-coating the oil-insensitive adhesive onto at least one of the nonwoven facing sheet and the elastomeric sheet.

33. The method of claim 25, further comprising aligning a second nonwoven facing sheet and the elastomeric sheet with at least some of the oil-insensitive adhesive therebetween.

34. The method of claim 25, further comprising winding the oil-resistant elastic laminate onto a roll.

35. The method of claim 25, wherein the elastomeric sheet comprises a plurality of elastomeric strands.

36. The method of claim 25, wherein the elastomeric sheet comprises an elastomeric film.

37. The method of claim 25, wherein the at least one nonwoven facing comprises at least one of a group consisting of spunbond, meltblown, bonded carded web, coform, and combinations thereof.

38. A method of making an oil-resistant elastic laminate, comprising:

combining an oil-insensitive adhesive with an elastomeric polymer composition;

forming an oil-resistant elastomeric sheet from the combined oil-insensitive adhesive and elastomeric polymer composition; and

calender bonding the oil-resistant elastomeric sheet to at least one nonwoven facing sheet.

39. The method of claim 38, comprising stretching the elastomeric sheet while bonding the elastomeric sheet to the nonwoven facing sheet.

40. The method of claim 38, further comprising necking the at least one nonwoven facing sheet.

41. The method of claim 38, comprising laminating the elastomeric sheet and the at least one nonwoven facing sheet in a continuous filament stretch-bond laminating process.

42. The method of claim 38, comprising laminating the elastomeric sheet and the at least one nonwoven facing sheet in a vertical filament stretch-bond laminating process.

43. The method of claim 38, further comprising winding the oil-resistant elastic laminate onto a roll.

44. The method of claim 38, wherein the elastomeric sheet comprises a plurality of elastomeric strands.

45. The method of claim 38, wherein the elastomeric sheet comprises an elastomeric film.

46. The method of claim 38, wherein the at least one nonwoven facing comprises at least one of a group consisting of spunbond, meltblown, bonded carded web, coform, and combinations thereof.

47. The method of claim 38, wherein the oil-insensitive adhesive comprises a hot-melt type adhesive, and compounding the oil-insensitive adhesive with the polymer composition.

48. The method of claim 38, wherein the oil-insensitive adhesive comprises a powder at ambient temperatures, and adding the powder adhesive to a matrix formed from the elastomeric polymer composition.

49. A method of making an oil-resistant elastic laminate, comprising:

forming at least one nonwoven web;

adding an oil-insensitive adhesive to the at least one nonwoven web during formation of the nonwoven web;

aligning the at least one nonwoven web with an elastomeric sheet; and

passing the at least one aligned nonwoven web and elastomeric sheet through a pressure nip of a heated calender.

50. The method of claim 49, comprising stretching the elastomeric sheet while bonding the elastomeric sheet to the at least one nonwoven web.

51. The method of claim 49, further comprising necking the at least one nonwoven web.

52. The method of claim 49, comprising laminating the elastomeric sheet and the at least one nonwoven web in a continuous filament stretch-bond laminating process.

53. The method of claim 49, comprising laminating the elastomeric sheet and the at least one nonwoven web in a vertical filament stretch-bond laminating process.

54. The method of claim 49, further comprising winding the oil-resistant elastic laminate onto a roll.

55. The method of claim 49, wherein the elastomeric sheet comprises a plurality of elastomeric strands.

56. The method of claim 49, wherein the elastomeric sheet comprises an elastomeric film.

57. The method of claim 49, wherein the at least one nonwoven facing comprises at least one of a group consisting of spunbond, meltblown, bonded carded web, coform, and combinations thereof.

58. The method of claim 49, wherein the oil-insensitive adhesive comprises a hot-melt type adhesive.

59. The method of claim 49, wherein the oil-insensitive adhesive comprises a powder at ambient temperatures, and adding the powder adhesive to a matrix of the at least one nonwoven web.