Adhesive closure system with an abridged release liner

• US 5,964,252 A
• Filed: 12/18/1997
• Issued: 10/12/1999
• Est. Priority Date: 12/18/1997
• Status: Expired due to Term

• Current Assignee: Morgan Adhesives Company (Amcor Plc)
• Original Assignee: Morgan Adhesives Company (Amcor Plc)
• Inventors: Simmons, George R., Roth, Judith A., Knittel, Gerald H.
• Primary Examiner(s): BRINSON, PATRICK F
• Application Number:
  US08/993,587
• Time in Patent Office: 663 Days
• Field of Search: 138/149, 138/156, 138/141, 138/151, 138/128, 138/110, 138/DIG. 1, 428/40.1, 428/41.8
• US Class Current: 138/149
• CPC Class Codes: F16L 59/022 with a single slit
• CPC Class Codes: F16L 59/10 Bandages or covers for the protection of the insulation, e.g. against the influence of the environment or against mechanical damage integral with the insulation materials F16L59/02
• CPC Class Codes: Y10S 138/01 Adhesive
• CPC Class Codes: Y10T 428/14 Layer or component removable to expose adhesive

Abstract

The present invention relates to an adhesive closure system. More specifically, this invention relates to an adhesive closure system with an abridged release liner. Initially, the abridged release liner allows partial exposure of the single adhesive layer to achieve a temporary bond. When desired, the release liner can be removed exposing the remainder of the adhesive to achieve a permanent bond. This type of closure system has numerous applications including the closure system for pipe insulation sleeves.

Claims

1. A pipe insulation sleeve assembly which comprises:

(a) an elongated, hollow, cylindrically shaped tubular section of insulating material having a longitudinally extending access slit between an inner surface and an outer surface of said sleeve, said access slit defining a first side and a second side of said outer surface adjacent said access slit;

(b) a closure system for maintaining said access slit in a closed position, said closure system comprising an adhesive carrier integrally secured to a first side of said outer surface, extending between said first and second sides of said outer surface and across said access slit, a layer of adhesive disposed on at least a portion of said carrier and capable of contacting said outer surface second side;

(c) a release liner removably disposed on a first area of said adhesive layer, while a second area of said adhesive layer remains exposed;

such that said exposed second area of adhesive layer affords an initial bond between said carrier and said outer surface second side of said access slit;

said first and second areas of exposed adhesive layer combine to afford a second bond between said carrier and said outer surface second side of said access slit when said release liner is removed.

2. A pipe insulation sleeve assembly as specified in claim 1, wherein said release liner contains as plurality of perforations that exposes said second area of said adhesive layer.

3. A pipe insulation sleeve assembly as specified in claim 1, wherein said release liner has a perimeter length that exposes said second area of said adhesive layer.

4. A pipe insulation sleeve assembly as specified in claim 1, wherein said release liner has a perimeter shape that exposes said second area of said adhesive layer.

5. A pipe insulation sleeve assembly as specified in claim 1, further comprising a pressure sensitive adhesive as said adhesive layer.

6. A pipe insulation sleeve assembly as specified in claim 1, wherein said second area of said adhesive layer is a sufficient percentage of said adhesive layer to form a temporary bond.

7. A pipe insulation sleeve assembly as according to claim 1, wherein said second area of said adhesive layer is a percentage within the range of 0%<

>

50%.

8. A pipe insulation sleeve assembly as according to claim 1, wherein said second area of said adhesive layer is a percentage within the range of 5%<

>

35%.

9. A pipe insulation sleeve assembly as according to claim 1, wherein said release liner can be removed to expose said entire adhesive layer.

10. A pipe insulation sleeve assembly as according to claim 1 wherein the combination of said first area and said second area of said adhesive layer is sufficient to form a permanent bond.

11. A pipe insulation sleeve assembly as specified in claim 1, wherein said carrier including a protective overcoating on said outer surface of said sleeve and a flap on said outer surface adjacent to and extending beyond said access slit, along the longitudinal length thereof, wherein said adhesive layer and said release line are disposed on said flap.

12. A pipe insulation assembly according to claim 1 wherein said initial bond is a temporary bond.

13. A pipe insulation assembly according to claim 1 wherein said second bond is a permanent bond.

14. A pipe insulation sleeve assembly which comprises:

(a) an elongated, hollow, cylindrically shaped tubular section of insulating material having a longitudinally extending access slit between an inner surface and an outer surface of said sleeve, said access slit defining a first and a second side wall;

(b) a closure system comprising a layer of adhesive disposed on at least a portion of at least one side wall and having an exposed surface;

(c) a release liner removably disposed on a first area of said exposed surface of said adhesive layer, while a second area of said adhesive layer remains exposed;

such that said exposed second area of adhesive layer affords a first bond between said first and second side walls of said access slit;

said first and second areas of exposed adhesive layer combine to afford a second bond between said first and second side walls when said release liner is removed.

15. A pipe insulation assembly according to claim 14 wherein said initial bond is a temporary bond.

16. A pipe insulation assembly according to claim 14 wherein said second bond is a permanent bond.

17. A pipe insulation sleeve assembly as specified in claim 14, wherein said release liner contains a plurality of perforations that exposes said second area of said adhesive layer.

18. A pipe insulation sleeve assembly as specified in claim 14, wherein said release liner has a perimeter length that exposes said second area of said adhesive layer.

19. A pipe insulation sleeve assembly as specified in claim 14, wherein said release liner has a perimeter length that exposes said second area of said adhesive layer.

20. A pipe insulation sleeve assembly as specified in claim 14, further comprising a pressure sensitive adhesive as said adhesive layer.

21. A pipe insulation sleeve assembly as specified in claim 14, wherein said second area of said adhesive layer is a sufficient percentage of said adhesive layer to form a temporary bond.

22. A pipe insulation sleeve assembly as according to claim 14, wherein said second area of said adhesive layer is a percentage within the range of 0%<

>

50%.

23. A pipe insulation sleeve assembly as according to claim 14, wherein said second area of said adhesive layer is a percentage within the range of 5%<

>

35%.

24. A pipe insulation sleeve assembly according to claim 14, wherein said release liner can be removed to expose said entire adhesive layer.

25. A method for closing a pipe insulation sleeve, said insulation sleeve having an elongated, hollow, cylindrically shaped tubular section of insulating material having a longitudinally extending access slit between an inner surface and an outer surface of said sleeve, said access slit defining a first side and a second side of said outer surface adjacent said access slit;

a closure system for maintaining said access slit in a closed position, said closure system comprising an adhesive carrier integrally secured to a first side of said outer surface, extending between said first and second sides of said outer surface and across said access slit, a layer of adhesive disposed on at least a portion of said carrier and capable of contacting said outer surface second side;

a release liner removably disposed on a first area of said adhesive layer, while a second area of said adhesive layer remains exposed;

comprising the steps of;

(a) forming an initial closure of said access slit by pressing into sealing engagement said second area of said adhesive layer onto said second side outer surface;

(b) severing said initial closure;

(c) removing said release liner to expose said first area of said adhesive layer;

(d) forming a second closure of said access slit by pressing into sealing engagement said first area and said second areas of said adhesive layer onto said second side outer surface.

26. A method for closing a pipe insulation sleeve, said insulation sleeve having an elongated, hollow, cylindrically shaped tubular section of insulating material having a longitudinally extending access slit between an inner surface and an outer surface of said sleeve, said access slit defining a first and a second side wall;

a closure system comprising a layer of adhesive disposed on an at least a portion of at least one side wall and having an exposed surface;

a release liner removably disposed on a first area of said exposed surface of said adhesive layer, while a second area of said adhesive layer remains exposed;

(a) forming an initial closure of said access slit by pressing into sealing engagement said second area of said adhesive layer onto said second side outer surface;

(b) severing said initial closure;

(c) removing said release liner to expose said first area of said adhesive layer;

(d) forming a second closure of said access slit by pressing into sealing engagement said first area and said second areas of said adhesive layer onto said second side outer surface.