Adhesive articles with improved air egress and methods of making the same

• US 6,630,049 B2
• Filed: 12/21/2000
• Issued: 10/07/2003
• Est. Priority Date: 04/24/2000
• Status: Expired due to Term

• Current Assignee: Avery Dennison Corporation
• Original Assignee: Avery Dennison Corporation
• Inventors: Iyer, Pradeep, Hannington, Michael
• Primary Examiner(s): Lorengo, Jerry A
• Application Number:
  US09/742,646
• Publication Number:
  US 20020011306A1
• Time in Patent Office: 1,020 Days
• Field of Search: 156/230, 156/235, 156/237, 156/238, 156/239, 156/240, 156/241, 156/247, 156/277, 156/289, 427/146, 427/147, 428/40.1, 428/41.7, 428/41.8, 428/41.9, 428/42.1, 428/42.2, 428/42.3, 428/195, 428/202, 428/204, 428/211, 428/343, 428/346, 428/352, 428/355, 428/914
• US Class Current: 156/289
• 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 7/35 Heat-activated
• CPC Class Codes: C09J 7/38 Pressure-sensitive adhesives [PSA]
• CPC Class Codes: C09J 7/403 characterised by the structure of the release feature
• CPC Class Codes: Y10S 428/914 Transfer or decalcomania
• CPC Class Codes: Y10T 428/14 Layer or component removable to expose adhesive
• CPC Class Codes: Y10T 428/1476 Release layer
• CPC Class Codes: Y10T 428/1495 Adhesive is on removable layer
• CPC Class Codes: Y10T 428/24802 Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
• CPC Class Codes: Y10T 428/24876 Intermediate layer contains particulate material [e.g., pigment, 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

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. A method of making an adhesive article comprising the steps of:

providing a construction comprising a facestock with front and back surfaces and a layer of adhesive having an upper and lower surface, wherein the upper surface of the adhesive layer is in adhesive contact with the back surface of the facestock layer;

applying a pattern of a non-adhesive material forms to the lower surface of the adhesive layer, each of said non-adhesive material forms having a bottom surface; and

embedding the non-adhesive material into the adhesive layer so that the bottom surface of the non-adhesive material forms are above the plane of the lower surface of the adhesive layer.

2. The method of claim 1 further comprising applying a release liner having a release surface to the adhesive layer, wherein the release surface is adhered to the lower surface of the adhesive layer.

3. The method of claim 1 wherein the applying step and embedding step occur simultaneously.

4. The method of claim 1 wherein the pattern comprises a plurality of dots, lines or combinations thereof.

5. The method of claim 1 wherein the applying step comprises printing, vacuum metalization or sputtering.

6. The method of claim 1 wherein the applying step comprises flexographic printing.

7. The method of claim 1 wherein the non-adhesive material comprises a UV curable ink.

8. The method of claim 2 wherein the release liner has a Sheffield roughness of greater than about 50.

9. The method of claim 2 wherein the release surface of the release liner has a matte finish.

10. The method of claim 2 wherein the release liner has a patterned release surface.

11. The method of claim 1 wherein the embedding step comprises applying a release liner to the lower surface of the adhesive layer.

12. The method of claim 1 wherein the embedding step comprises winding the material so that the patterned lower surface of the adhesive is in adhesive contact with the front surface of the facestock.

13. The method of claim 1 wherein the adhesive comprises a pressure sensitive adhesive.

14. The method of claim 1 wherein the adhesive comprises a heat-activated adhesive.

15. The method of claim 2 wherein the release surface of the release liner has a non-adhesive material printed thereon.

16. A method of making an adhesive article comprising the steps of:

providing a construction comprising a facestock with front and back surfaces and a layer of adhesive having an upper and lower surface, wherein the upper surface of the adhesive layer is in adhesive contact with the back surface of the facestock layer;

applying a pattern of a non-adhesive material forms to the lower surface of the adhesive layer, each of said non-adhesive material forms having a bottom surface;

embedding the non-adhesive material into the adhesive layer so that the bottom surface of the non-adhesive material forms are above the plane of the lower surface of the adhesive layer;

applying a release liner having a release surface to the adhesive layer, wherein the release surface is adhered to the lower surface to the adhesive layer, and wherein the release surface has a non-adhesive material printed thereon and embedded into the release surface.

17. A method of making an adhesive article comprising the steps of:

providing a construction comprising a facestock with front and back surfaces a layer of adhesive having an upper and lower surface, wherein the upper surface of the adhesive layer is in adhesive contact with the back surface of the facestock layer;

applying a pattern of a non-adhesive material to the lower surface of the adhesive layer, wherein the non-adhesive material comprises a porous non-adhesive material; and

embedding the non-adhesive material into the adhesive layer.

18. The method of claim 17 wherein the porous non-adhesive material comprises an elastomer.

19. A method of making an adhesive article comprising the steps of:

providing a construction comprising a facestock with front and back surfaces, wherein the front surface of the facestock has a release surface; and

a layer of adhesive having an upper and lower surface, wherein the upper surface of the adhesive layer is in adhesive contact with the back surface of the facestock layer;

applying a pattern of a non-adhesive material to the lower surface of the adhesive layer; and

embedding the non-adhesive material into the adhesive layer, wherein the embedding step comprises winding the material so that the patterned lower surface of the adhesive is in adhesive contact with the front surface of the facestock.

20. A method of making an adhesive article comprising the steps of:

providing a construction comprising a facestock with front and back surfaces and a layer of adhesive having an upper and lower surface, wherein the upper surface of the adhesive layer is in adhesive contact with the back surface of the facestock layer;

applying a pattern of a non-adhesive material to the lower surface of the adhesive layer;

applying randomly distributed non-adhesive particulate material onto the lower surface of the adhesive layer prior to the embedding step; and

embedding the non-adhesive material into the adhesive layer.

21. A method of making an adhesive article comprising the steps of:

providing a construction comprising a facestock with front and back surfaces and a layer of adhesive having an upper and lower surface, wherein the upper surface of the adhesive layer is in adhesive contact with the back surface of the facestock layer;

applying a pattern of a non-adhesive material to the lower surface of the adhesive layer;

applying a release liner having a release surface to the adhesive layer, wherein the release surface is adhered to the lower surface of the adhesive layer;

applying randomly distributed non-adhesive particulate material onto the release surface of the release liner; and

embedding the non-adhesive material into the adhesive layer.

22. The method of claim 21 further comprising at least partially embedding the randomly distributed non-adhesive particulate material into the release surface of the release liner prior to the embedding step.

23. A method of making an adhesive article comprising the steps of:

providing a construction comprising a facestock with front and back surfaces and a layer of adhesive having an upper and lower surface, wherein the upper surface of the adhesive layer is in adhesive contact with the back surface of the facestock layer;

applying a second layer of adhesive to the front surface of the facestock;

applying a pattern of a non-adhesive material to the lower surface of the adhesive layer; and

embedding the non-adhesive material into the adhesive layer.

24. The method of claim 23 wherein a pattern of a non-adhesive material is applied to the second adhesive layer.

25. A method of making an adhesive article comprising the steps of:

providing a construction comprising a release liner having a release surface and a front surface, and a layer of adhesive having an upper and lower surface, wherein the lower surface of the adhesive layer is in releasable contact with the release surface of the release liner;

applying a pattern of a non-adhesive material to the upper surface of the adhesive layer; and

embedding the non-adhesive material into the adhesive layer.

26. The method of claim 25 further comprising applying a facestock to the upper surface of the adhesive layer.

27. The method of claim 25 wherein the applying step and the embedding step occur simultaneously.

28. The method of claim 25 wherein the pattern comprises a plurality of dots, lines or combinations thereof.

29. The method of claim 25 wherein the step of applying the pattern of non-adhesive material comprises printing, vacuum metalization or sputtering.

30. The method of claim 25 wherein the applying step comprises flexographic printing.

31. The method of claim 25 wherein the non-adhesive material comprises a UV curable ink.

32. The method of claim 25 wherein the non-adhesive material is embedded below the plane of the surface of the adhesive.

33. The method of claim 25 wherein the release liner has a Sheffield roughness of greater than about 50.

34. The method of claim 25 wherein the release surface of the release liner has a matte finish.

35. The method of claim 25 wherein the release surface of the release liner has a patterned finish.

36. The method of claim 25 wherein the non-adhesive material comprises a porous non-adhesive material.

37. The method of claim 36 wherein the porous non-adhesive material comprises an elastomer.

38. The method of claim 25 wherein the embedding step comprises applying a second release liner to the upper surface of the adhesive layer.

39. The method of claim 25 wherein the front surface of the release liner has a release coating thereon and one surface of the release liner has a higher release value than the other.

40. The method of claim 39 wherein the embedding step comprises winding the material so that the patterned upper surface of the adhesive is in adhesive contact with the front surface of the release liner.

41. The method of claim 25 wherein the embedding step comprises applying a facestock to the upper surface of the adhesive layer.

42. The method of claim 25 wherein the adhesive comprises a pressure sensitive adhesive.

43. The method of claim 25 wherein the adhesive comprises a heat-activated adhesive.

44. A method of making an adhesive article comprising the steps of:

providing a construction comprising a release liner having a release surface and a front surface, and a layer of adhesive having an upper and lower surface, wherein the lower surface of the adhesive layer is in releasable contact with the release surface of the release liner, and wherein the release surface of the release liner has non-adhesive material printed thereon; and

applying a pattern of a non-adhesive material to the upper surface of the adhesive layer; and

embedding the non-adhesive material into the adhesive layer.

45. The method of claim 44 wherein the non-adhesive material printed on the release surface of the release liner is embedded into the release surface.

46. A method of making an adhesive article comprising the steps of:

providing a construction comprising a release liner having a release surface and a front surface, and a layer of adhesive having an upper and lower surface, wherein the lower surface of the adhesive layer is in releasable contact with the release surface of the release liner, and wherein the release surface of the release liner has randomly distributed non-adhesive particulate material applied thereto; and

applying a pattern of a non-adhesive material to the upper surface of the adhesive layer; and

embedding the non-adhesive material into the adhesive layer.

47. A method of making an adhesive article comprising the steps of:

providing a construction comprising a release liner having a release surface and a front surface, and a layer of adhesive having an upper and lower surface, wherein the lower surface of the adhesive layer is in releasable contact with the release surface of the release liner, and wherein the release surface of the release liner has randomly distributed non-adhesive particulate material embedded therein; and

applying a pattern of a non-adhesive material to the upper surface of the adhesive layer; and

embedding the non-adhesive material into the adhesive layer.

48. A method of making an adhesive article comprising the steps of:

providing a construction comprising a facestock with front and back surfaces and a layer of adhesive having an upper and lower surface, wherein the upper surface of the adhesive layer is in adhesive contact with the back surface of the facestock layer;

applying by vacuum metalization or sputtering a pattern of a non-adhesive material forms to the lower surface of the adhesive layer, each of said non-adhesive material forms having a bottom surface; and

embedding the non-adhesive material into the adhesive layer so that bottom surface of the non-adhesive material forms are even with or below the plane of the lower surface of the adhesive layer.

49. The method of claim 48 further comprising applying a release liner having a release surface to the adhesive layer, wherein the release surface is adhered to the lower surface of the adhesive layer.

50. The method of claim 48 wherein the pattern comprises a plurality of dots, lines or combinations thereof.

51. The method of claim 49 wherein the release liner has a Sheffield roughness of greater than about 50.

52. The method of claim 49 wherein the release surface of the release liner has a matte finish.

53. The method of claim 49 wherein the release liner has a patterned release surface.

54. The method of claim 48 wherein the embedding step comprises applying a release liner to the lower surface of the adhesive layer.

55. The method of claim 49 wherein the release surface of the release liner has a non-adhesive material printed thereon.

56. The method of claim 55 wherein the non-adhesive material printed on the release liner is embedded into the release surface.

57. The method of claim 48 wherein the adhesive comprises a pressure sensitive adhesive.

58. The method of claim 48 wherein the adhesive comprises a heat-activated adhesive.