Patent US1325623A successfully refreshed from Google Patents.
US5660922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coextruded pressure-sensitive adhesive tape and method of making
Assignee: 3M Co
•
Filing: 1995-05-03
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Granted: 1997-08-26
•
Expires: 2015-05-03
Abstract
Abstract A unified, composite tape structure is provided. The tape comprises two outer pressure-sensitive adhesive layers joined via melt processing. A method of making the tape comprising the use of melt processing is also disclosed. In the method a plurality of layers are melt processed and simultaneously joined to form the unified composite.
Inventors
- 👤 David B. Herridge
- 👤 Dennis L. Krueger
- 👤 Richard J. Rolando
- 👤 Ronald J. Ramirez
- 👤 James E. Sax
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:56
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/20; B; B29; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/08; B29C48/25; B29C48/30; B29C48/35; B29C48/88; B29C48/911; B29C48/9135; B29C48/914; B29C48/915; B29C48/9155; B29C48/917; B29C48/9175; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24959; Y10T428/249921; Y10T428/249953; Y10T428/249982; Y10T428/249983; Y10T428/28; Y10T428/2848
Claims Analysis
Total Claims: 43
Claim 1
Independent Claim
92 words
A composite pressure-sensitive adhesive tape having two exterior surfaces of a normally tacky pressure-sensitive adhesive, the tape comprising a unified structure of first and second simultaneously melt processed pressure-sensitive adhesive layers each comprising an elastomeric polymer, and optionally a third simultaneously melt processed layer between said first and second pressure-sensitive adhesive layers, wherein said third layer is essentially free from the elastomeric polymer used in the pressure-sensitive adhesive used in said first and second pressure-sensitive adhesive layers, and further wherein at least one of said pressure-sensitive adhesive layers has been cross linked.
Claim 2
Dependent Claim
92 words
A composite pressure-sensitive adhesive tape having two exterior surfaces of a normally tacky pressure-sensitive adhesive, the tape comprising a unified structure of first and second simultaneously melt processed pressure-sensitive adhesive layers each comprising an elastomeric polymer, and optionally a third simultaneously melt processed layer between said first and second pressure-sensitive adhesive layers, wherein said third layer is essentially free from the elastomeric polymer used in the pressure-sensitive adhesive used in said first and second pressure-sensitive adhesive layers, and further wherein at least one of said pressure-sensitive adhesive layers has been cross linked.
Claim 3
Dependent Claim
44 words
A composite pressure-sensitive adhesive tape according to claim 1 wherein there is no said third layer between said first and second pressure-sensitive adhesive layers, and wherein said first and second pressure-sensitive adhesive layers are essentially permanently joined to each other in said unified structure.
Claim 4
Dependent Claim
34 words
A composite pressure-sensitive adhesive tape according to claim 1 wherein said elastomeric polymer of said pressure-sensitive adhesive is selected from the group consisting of random copolymer adhesives, block copolymer adhesives, and natural rubber adhesives.
Claim 5
Dependent Claim
14 words
A composite pressure-sensitive adhesive tape according to claim 1 wherein said layers are coextruded.
Claim 6
Dependent Claim
15 words
A composite pressure-sensitive adhesive tape according to claim 1 wherein said third layer is present.
Claim 7
Dependent Claim
17 words
A composite pressure-sensitive adhesive tape according to claim 5 wherein said third layer is an adhesive layer.
Claim 8
Dependent Claim
17 words
A composite pressure-sensitive adhesive tape according to claim 5 wherein said third layer is a non-adhesive layer.
Claim 9
Dependent Claim
24 words
A composite pressure-sensitive adhesive tape according to claim 1 wherein the composition of said first and second pressure-sensitive adhesive layers is substantially the same.
Claim 10
Dependent Claim
25 words
A composite pressure-sensitive adhesive tape according to claim 1 wherein the composition of said first and second pressure-sensitive adhesive layers is not substantially the same.
Claim 11
Dependent Claim
43 words
A composite pressure-sensitive adhesive tape according to claim 1 wherein the ratio of the melt viscosity of any one of the simultaneously melt processed layers to any other of the simultaneously melt processed layers is in a range of from 10:1 to 1:10.
Claim 12
Dependent Claim
20 words
A composite pressure-sensitive adhesive tape according to claim 10 wherein said ratio is in the range of 4:1 to 1:4.
Claim 13
Dependent Claim
20 words
A composite pressure-sensitive adhesive tape according to claim 10 wherein said ratio is in the range of 2:1 to 1:2.
Claim 14
Dependent Claim
69 words
A composite pressure-sensitive adhesive tape comprising first and second normally tacky pressure sensitive adhesive layers each comprising an elastomeric polymer and a carrier layer between said first and second pressure-sensitive adhesive layers, wherein said carrier layer is essentially free of the elastomeric polymer used in pressure-sensitive adhesive of either of said pressure-sensitive adhesive layers, and wherein all of said layers are simultaneously melt processed to form a unified structure.
Claim 15
Dependent Claim
69 words
A composite pressure-sensitive adhesive tape comprising first and second normally tacky pressure sensitive adhesive layers each comprising an elastomeric polymer and a carrier layer between said first and second pressure-sensitive adhesive layers, wherein said carrier layer is essentially free of the elastomeric polymer used in pressure-sensitive adhesive of either of said pressure-sensitive adhesive layers, and wherein all of said layers are simultaneously melt processed to form a unified structure.
Claim 16
Dependent Claim
20 words
A composite pressure-sensitive adhesive tape according to claim 13 wherein the individual layers of said structure are essentially inseparable therefrom.
Claim 17
Dependent Claim
16 words
A composite pressure-sensitive adhesive tape according to claim 13 wherein said carrier layer is essentially continuous.
Claim 18
Dependent Claim
10 words
A hand tearable pressure-sensitive adhesive tape according to claim 13.
Claim 19
Dependent Claim
15 words
A composite pressure-sensitive adhesive tape according to claim 13 wherein said carrier layer is discontinuous.
Claim 20
Dependent Claim
21 words
A composite pressure-sensitive adhesive tape according to claim 17 wherein said carrier layer comprises at least one rib disposed longitudinally therein.
Claim 21
Dependent Claim
10 words
A reinforced composite pressure-sensitive adhesive tape according to claim 18.
Claim 22
Dependent Claim
17 words
A composite pressure-sensitive adhesive tape according to claim 13 wherein said carrier layer is a foamed material.
Claim 23
Dependent Claim
19 words
A composite pressure-sensitive adhesive tape according to claim 13 wherein said carrier layer is less than 15 micrometers thick.
Claim 24
Dependent Claim
19 words
A composite pressure-sensitive adhesive tape according to claim 21 wherein said carrier layer is less than 5 micrometers thick.
Claim 25
Dependent Claim
19 words
A composite pressure-sensitive adhesive tape according to claim 22 wherein said carrier layer is at least 1 micrometer thick.
Claim 26
Dependent Claim
87 words
A composite pressure-sensitive adhesive tape construction having pressure-sensitive adhesive on both exterior surfaces thereof comprising two layers of a normally tacky pressure-sensitive adhesive each comprising an elastomeric polymer and a layer of an extrudable carrier therebetween, wherein said carrier layer is (a) thin relative to the thickness of at least one of said adhesive layers, and (b) essentially free from the elastomeric polymer used in the adhesive of either of said pressure-sensitive adhesive layers, and wherein each of said layers has been coextruded to form said tape.
Claim 27
Dependent Claim
87 words
A composite pressure-sensitive adhesive tape construction having pressure-sensitive adhesive on both exterior surfaces thereof comprising two layers of a normally tacky pressure-sensitive adhesive each comprising an elastomeric polymer and a layer of an extrudable carrier therebetween, wherein said carrier layer is (a) thin relative to the thickness of at least one of said adhesive layers, and (b) essentially free from the elastomeric polymer used in the adhesive of either of said pressure-sensitive adhesive layers, and wherein each of said layers has been coextruded to form said tape.
Claim 28
Dependent Claim
10 words
An oriented composite pressure-sensitive adhesive tape according to claim 1.
Claim 29
Dependent Claim
10 words
A uniaxially oriented pressure-sensitive adhesive tape according to claim 25.
Claim 30
Dependent Claim
10 words
A biaxially oriented pressure-sensitive adhesive tape according to claim 26.
Claim 31
Dependent Claim
60 words
A composite pressure-sensitive adhesive tape comprising a melt processed, unified construction having a layer of a pressure-sensitive adhesive comprising an elastomeric polymer on each surface of a central layer, said central layer comprising a blend of two or more polymers, said blend being essentially free from the elastomeric polymer used in the pressure-sensitive adhesive used in said pressure-sensitive adhesive layers.
Claim 32
Dependent Claim
60 words
A composite pressure-sensitive adhesive tape comprising a melt processed, unified construction having a layer of a pressure-sensitive adhesive comprising an elastomeric polymer on each surface of a central layer, said central layer comprising a blend of two or more polymers, said blend being essentially free from the elastomeric polymer used in the pressure-sensitive adhesive used in said pressure-sensitive adhesive layers.
Claim 33
Dependent Claim
11 words
A hand tearable composite pressure-sensitive adhesive tape according to claim 28.
Claim 34
Dependent Claim
19 words
A composite pressure-sensitive adhesive tape according to claim 1 wherein said structure is cooled before passing through a nip.
Claim 35
Dependent Claim
85 words
A composite pressure-sensitive adhesive tape having two exterior surfaces of a normally tacky pressure-sensitive adhesive, the tape comprising a unified structure of first and second simultaneously melt processed pressure-sensitive adhesive layers each comprising an elastomeric polymer, and optionally a third simultaneously melt processed layer between said first and second pressure-sensitive adhesive layers, wherein said third layer is essentially free from the elastomeric polymer used in the pressure-sensitive adhesive used in said first and second pressure-sensitive adhesive layers, and further wherein the composite tape is oriented.
Claim 36
Dependent Claim
85 words
A composite pressure-sensitive adhesive tape having two exterior surfaces of a normally tacky pressure-sensitive adhesive, the tape comprising a unified structure of first and second simultaneously melt processed pressure-sensitive adhesive layers each comprising an elastomeric polymer, and optionally a third simultaneously melt processed layer between said first and second pressure-sensitive adhesive layers, wherein said third layer is essentially free from the elastomeric polymer used in the pressure-sensitive adhesive used in said first and second pressure-sensitive adhesive layers, and further wherein the composite tape is oriented.
Claim 37
Dependent Claim
12 words
A composite pressure-sensitive tape according to claim 31 which is biaxially oriented.
Claim 38
Dependent Claim
12 words
A composite pressure-sensitive tape according to claim 32 which is uniaxially oriented.
Claim 39
Dependent Claim
76 words
A composite pressure-sensitive adhesive tape having two exterior surfaces of a normally tacky pressure-sensitive adhesive, the tape comprising a unified structure of first and second simultaneously melt processed pressure-sensitive adhesive layers each comprising an elastomeric polymer, and a third simultaneously melt processed layer between said first and second pressure-sensitive adhesive layers, wherein said third layer is essentially free from the elastomeric polymer used in the pressure-sensitive adhesive used in said first and second pressure-sensitive adhesive layers.
Claim 40
Dependent Claim
76 words
A composite pressure-sensitive adhesive tape having two exterior surfaces of a normally tacky pressure-sensitive adhesive, the tape comprising a unified structure of first and second simultaneously melt processed pressure-sensitive adhesive layers each comprising an elastomeric polymer, and a third simultaneously melt processed layer between said first and second pressure-sensitive adhesive layers, wherein said third layer is essentially free from the elastomeric polymer used in the pressure-sensitive adhesive used in said first and second pressure-sensitive adhesive layers.
Claim 41
Dependent Claim
17 words
A composite pressure-sensitive adhesive tape according to claim 34 wherein said third layer is an adhesive layer.
Claim 42
Dependent Claim
17 words
A composite pressure-sensitive adhesive tape according to claim 34 wherein said third layer is a non-adhesive layer.
Claim 43
Dependent Claim
24 words
A composite pressure-sensitive adhesive tape according to claim 34 wherein the composition of said first and second pressure-sensitive adhesive layers is substantially the same.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-08-25 | 2001-02-24 | 2001-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-08-25 | 2005-02-24 | 2005-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-08-25 | 2009-02-24 | 2009-08-26 | $7700.00 | Window Closed / Lapsed |