Adhesive articles with improved air egress

• US 20010031353A1
• Filed: 12/21/2000
• Published: 10/18/2001
• Est. Priority Date: 04/24/2000
• Status: Active Grant

• Current Assignee: Avery Dennison Corporation
• Original Assignee: Avery Dennison Corporation
• Inventors: Hannington, Michael
• Granted Patent: US 7,060,351 B2
• Time in Patent Office: Days
• US Class Current: 428/343
• CPC Class Codes: C09J 2301/204 the adhesive coating being discontinuous
• CPC Class Codes: C09J 2301/206 the adhesive layer comprising non-adhesive protrusions
• CPC Class Codes: C09J 7/10 without carriers
• CPC Class Codes: C09J 7/35 Heat-activated
• CPC Class Codes: C09J 7/38 Pressure-sensitive adhesives [PSA]
• CPC Class Codes: Y10T 428/14 Layer or component removable to expose adhesive
• CPC Class Codes: Y10T 428/1471 Protective layer
• CPC Class Codes: Y10T 428/1476 Release layer
• CPC Class Codes: Y10T 428/24612 Composite web or sheet
• CPC Class Codes: Y10T 428/24802 Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
• CPC Class Codes: Y10T 428/28 Web or sheet containing structurally defined element or component and having an adhesive outermost layer
• CPC Class Codes: Y10T 428/2813 Heat or solvent activated or sealable
• CPC Class Codes: Y10T 428/2839 with release or antistick coating
• CPC Class Codes: Y10T 428/2848 Three or more layers
• CPC Class Codes: Y10T 428/2902 Channel shape

Abstract

This invention relates to an adhesive article which provides air egress. Air egress is provided by supplying a route, such as areas of no initial adhesion for the air to flow out from under the construction. The invention relates to an adhesive article comprising a facestock having a front surface and a back surface, a continuous layer of adhesive having an upper surface and a lower surface wherein the upper surface of the adhesive layer is adhered to the back surface of the facestock, and a plurality of spaced-apart non-adhesive material which is in contact with the lower surface of the adhesive layer wherein the lower surface of the adhesive layer has a Sheffield roughness of at least about 10 and the adhesive article provides air egress. The invention also relates to methods of preparing the adhesive articles. These articles have usefulness as industrial graphics images, as well as decorative coverings, etc. The articles provide air egress and optionally repositionability and slideability.

Claims

1. An adhesive article comprising:

a facestock having a front surface and a back surface;

a continuous layer of adhesive having an upper surface and a lower surface and end edges, wherein the upper surface of the adhesive is adhered to the back surface of the facestock; and

a pattern of non-adhesive material forms embedded into the upper surface of the adhesive layer, each of said non-adhesive material forms having a top surface, wherein the top surfaces of the non-adhesive material forms are even with or below the plane of the upper surface of the adhesive layer.

2. The adhesive article of

claim 1

wherein the non-adhesive material forms have an average thickness of about 30 nanometers to about 100μ

.

3. The adhesive article of

claim 1

wherein the non-adhesive material comprises a UV curable ink.

4. The adhesive article of

claim 1

wherein the pattern of non-adhesive material forms are applied by vacuum metalization or sputtering.

5. The adhesive article of

claim 4

wherein the non-adhesive material forms have an average thickness of about 30 to about 3000 nanometers.

6. The adhesive article of

claim 1

wherein the pattern of non-adhesive material forms comprises a plurality of dots, lines or combinations thereof.

7. The adhesive article of

claim 6

wherein the lines of non-adhesive material have an average width of from about 12μ

to about 250μ and

an average thickness of from about 30 nanometers to about 100μ

.

8. The adhesive article of

claim 6

wherein at least 50% of the lines intersect the end edges of the adhesive layer.

9. The adhesive article of

claim 6

wherein the plurality of lines form a grid pattern.

10. The adhesive article of

claim 1

wherein the adhesive layer comprises a pressure sensitive adhesive.

11. The adhesive article of

claim 1

wherein the adhesive layer comprises a heat-activated adhesive.

12. The adhesive article of

claim 1

wherein the non-adhesive material comprises a porous non-adhesive material.

13. The adhesive article of

claim 12

wherein the porous non-adhesive material comprises an elastomer.

14. The adhesive article of

claim 1

wherein the article is wound so that the lower surface of the adhesive is in adhesive contact with the front surface of the facestock.

15. The adhesive article of

claim 14

wherein the front surface of the facestock has a release surface.

16. The adhesive article of

claim 1

further comprising a release liner having a release surface, wherein said release surface is adhered to the lower surface of the adhesive layer.

17. The adhesive article of

claim 16

wherein the release surface of the release liner has a textured surface.

18. The adhesive article of

claim 17

wherein the release surface has a random texture.

19. The adhesive article of

claim 17

wherein the release surface has a patterned finish.

20. The adhesive article of

claim 17

wherein the lower surface of the adhesive layer has a textured surface corresponding to the textured surface of the release liner.

21. The adhesive article of

claim 16

wherein the release surface of the release liner has randomly distributed non-adhesive particulate material thereon.

22. The adhesive article of

claim 21

wherein the randomly distributed non-adhesive particulate material is at least partially embedded into the release surface.

23. The adhesive article of

claim 16

wherein the release surface of the release liner has a non-adhesive material printed thereon.

24. The adhesive article of

claim 23

wherein the non-adhesive material printed on the release surface of the release liner is embedded into the release surface.

25. The adhesive article of

claim 1

further comprising a second adhesive layer having an upper and lower surface, said lower surface adhered to the front surface of the facestock.

26. The adhesive article of

claim 25

wherein a pattern of non-adhesive material forms is embedded into the lower surface of the second adhesive layer, each of said non-adhesive material forms having a bottom surface, wherein the bottom surfaces of the non-adhesive material forms are even with or above the plane of the lower surface of the second adhesive layer.

27. An adhesive article comprising:

a facestock having a front surface and a back surface;

a continuous layer of adhesive having an upper surface and a lower surface and end edges, wherein the upper surface of the adhesive is adhered to the back surface of the facestock; and

a pattern of non-adhesive material forms embedded into the lower surface of the adhesive layer, each of said non-adhesive material forms having a bottom surface, wherein the bottom surfaces of the non-adhesive material forms are even with or above the plane of the lower surface of the adhesive layer.

28. The adhesive article of

claim 27

wherein the non-adhesive material forms have an average thickness of about 30 nanometers to about 100μ

.

29. The adhesive article of

claim 27

wherein the non-adhesive material comprises a UV curable ink.

30. The adhesive article of

claim 27

wherein the pattern of non-adhesive material forms are applied by vacuum metalization or sputtering.

31. The adhesive article of

claim 30

wherein the non-adhesive material forms have an average thickness of about 30 to about 3000 nanometers.

32. The adhesive article of

claim 27

wherein the pattern of non-adhesive material forms comprises a plurality of dots, lines or combinations thereof.

33. The adhesive article of

claim 32

wherein the lines of non-adhesive material have an average width of from about 12μ

to about 250μ and

an average thickness of from about 30 nanometers to about 100μ

.

34. The adhesive article of

claim 33

wherein at least 50% of the lines intersect the end edges of the adhesive layer.

35. The adhesive article of

claim 33

wherein a plurality of lines form a grid pattern.

36. The adhesive article of

claim 27

wherein the adhesive layer comprises a pressure sensitive adhesive.

37. The adhesive article of

claim 27

wherein the adhesive layer comprises a heat-activated adhesive.

38. The adhesive article of

claim 27

wherein the non-adhesive material comprises a porous non-adhesive material.

39. The adhesive article of

claim 38

wherein the porous non-adhesive material comprises an elastomer.

40. The adhesive article of

claim 27

wherein the article is wound so that the patterned lower surface of the adhesive is in adhesive contact with the front surface of the facestock.

41. The adhesive article of

claim 40

wherein the front surface of the facestock has a release surface.

42. The adhesive article of

claim 27

further comprising a release liner having a release surface, wherein said release surface is adhered to the lower surface of the adhesive layer.

43. The adhesive article of

claim 42

wherein the release surface of the release liner has a textured surface.

44. The adhesive article of

claim 43

wherein the release surface has a random texture.

45. The adhesive article of

claim 43

wherein the release surface has a patterned finish.

46. The adhesive article of

claim 43

wherein the lower surface of the adhesive layer has a textured surface that is complementary to the textured surface of the release liner.

47. The adhesive article of

claim 42

wherein the release surface of the release liner has randomly distributed non-adhesive particulate material thereon.

48. The adhesive article of

claim 47

wherein the randomly distributed non-adhesive particulate material is at least partially embedded into the release surface.

49. The adhesive article of

claim 42

wherein the release surface of the release liner has a non-adhesive material printed thereon.

50. The adhesive article of

claim 49

wherein the non-adhesive material printed on the release surface of the release liner is embedded into the release surface.

51. The adhesive article of

claim 27

further comprising a second adhesive layer having an upper and lower surface, wherein the lower surface of the second adhesive is adhered to the front surface of the facestock.

52. The adhesive article of

claim 51

wherein a pattern of non-adhesive material forms is embedded into the upper surface of the second adhesive layer, each of said non-adhesive material forms having a top surface, wherein the top surfaces of the non-adhesive material forms are even with or below the plane of the upper surface of the second adhesive layer.

53. An adhesive article comprising:

a release liner having a release surface and a back surface;

a continuous layer of adhesive having an upper surface and a lower surface and end edges, wherein the upper surface of the adhesive is adhered to the release surface of the release liner; and

a pattern of non-adhesive material forms embedded into the lower surface of the adhesive layer, each of said non-adhesive material forms having a bottom surface, wherein the bottom surfaces of the non-adhesive material forms are even with, above, or below the plane of the lower surface of the adhesive layer.

54. The adhesive article of

claim 53

wherein the non-adhesive material forms have an average thickness of about 30 nanometers to about 100μ

.

55. The adhesive article of

claim 53

wherein the pattern of non-adhesive material forms are applied by vacuum metalization or sputtering.

56. The adhesive article of

claim 53

wherein the non-adhesive material comprises a UV curable ink.

57. The adhesive article of

claim 53

wherein the pattern of non-adhesive material forms comprises a plurality of dots, lines or combinations thereof.

58. The adhesive article of

claim 57

wherein the lines of non-adhesive material have an average width of from about 12μ

to about 250μ and

an average thickness of from about 30 nanometers to about 100μ

.

59. The adhesive article of

claim 57

wherein at least 50% of the lines intersect the end edges of the adhesive layer.

60. The adhesive article of

claim 57

wherein the plurality of lines form a grid pattern.

61. The adhesive article of

claim 53

wherein the adhesive layer comprises a pressure sensitive adhesive.

62. The adhesive article of

claim 53

wherein the adhesive layer comprises a heat-activated adhesive.

63. The adhesive article of

claim 53

wherein the non-adhesive material comprises a porous non-adhesive material.

64. The adhesive article of

claim 63

wherein the porous non-adhesive material comprises an elastomer.

65. The adhesive article of

claim 53

further comprising a second release liner having a release surface, wherein said release surface is applied to the lower surface of the adhesive layer.

66. The adhesive article of

claim 65

wherein the release surface of the second release liner has a textured surface.

67. The adhesive article of

claim 66

wherein the release surface of the second release liner has a random texture.

68. The adhesive article of

claim 66

wherein the release surface of the second release liner has a patterned finish.

69. The adhesive article of

claim 66

wherein the lower surface of the adhesive layer has a textured surface that is complementary to the textured surface of the second release liner.

70. The adhesive article of

claim 53

wherein the back surface of the release liner has a release coating thereon, the release coating having a higher release value than that of the release surface.

71. The adhesive article of

claim 70

wherein the article is wound so that the patterned lower surface of the adhesive is in adhesive contact with the back surface of the release liner.

72. The adhesive article of

claim 53

wherein the release surface of the release liner has a non-adhesive material printed thereon.

73. The adhesive article of

claim 72

wherein the non-adhesive material printed on the release surface of the release liner is embedded into the release surface.

74. The adhesive article of

claim 53

wherein the lower surface of the adhesive layer has randomly distributed non-adhesive particulate material embedded therein.