US5100728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High performance pressure sensitive adhesive tapes and process for making the same
Assignee: Avery Dennison Corp
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Filing: 1990-08-24
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Granted: 1992-03-31
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Expires: 2010-08-24
Abstract
Abstract A pressure sensitive adhesive tape comprises a carrier layer having a thickness of 0.25 to 2.0 millimeter and comprising an electron beam cured pressure sensitive adhesive matrix, 10 to 20% by volume low density microspheres and at least one pigment in an amount sufficient to color the tape. Preferably, fumed silica is present in an amount up to 5% by weight. The tape preferably has a kin layer on each side of the carrier layer. The skin layer has a coating thickness of 25 to 125 g/m 2 and comprises a pressure sensitive adhesive matrix free of rigid, low density microspheres. The process comprises first preparing an adhesive composition containing electron beam-curable adhesive polymer matrix, fillers and solvent. The composition is introduced and conveyed through a twin screw extruder. In the extruder, solvent is removed in one or more solvent removal units, and a solvent-free composition is extruded as the carried layer. Skin layers may be co-extruded with the carrier layer.
Inventors
- 👤 Sebastian S. Plamthottam
- 👤 Earl W. McFeaters
- 👤 Yehuda Ozari
- 👤 Prakash Mallya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:02
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/20; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2809; Y10T428/2848; Y10T428/2852; Y10T428/2878; Y10T428/2883; Y10T428/2891
Claims Analysis
Total Claims: 47
Claim 1
Independent Claim
70 words
A pressure sensitive adhesive tape having a carrier layer comprising an electron beam-cured pressure sensitive adhesive polymer matrix, form about 5% to about 70% by volume low density microspheres and at least one ultraviolet light absorbable pigment in an amount of at least 0.2 percent by weight, wherein the pressure sensitive adhesive tape exhibits substantially no decrease in creep as compared to the same pressure sensitive adhesive tape without pigment.
Claim 2
Dependent Claim
70 words
A pressure sensitive adhesive tape having a carrier layer comprising an electron beam-cured pressure sensitive adhesive polymer matrix, form about 5% to about 70% by volume low density microspheres and at least one ultraviolet light absorbable pigment in an amount of at least 0.2 percent by weight, wherein the pressure sensitive adhesive tape exhibits substantially no decrease in creep as compared to the same pressure sensitive adhesive tape without pigment.
Claim 3
Dependent Claim
30 words
An adhesive tape as claimed in claim 1 wherein the pressure sensitive adhesive polymer matrix is acrylic based and the creep at 70° C. is at least about 166 hours.
Claim 4
Dependent Claim
23 words
An adhesive tape as claimed in claim 1, wherein the carrier layer has a thickness of from about 0.25 to about 4.0 mm.
Claim 5
Dependent Claim
24 words
An adhesive tape as claimed in claim 1, wherein the carrier layer comprises from about 5% to about 45% by volume low density microspheres.
Claim 6
Dependent Claim
24 words
An adhesive tape as claimed in claim 1, wherein the carrier layer comprises from about 10 to about 20% by volume low density microspheres.
Claim 7
Dependent Claim
15 words
An adhesive tape as claimed in claim 1, wherein the low density microspheres are hollow.
Claim 8
Dependent Claim
33 words
An adhesive tape as claimed in claim 1, wherein the low density microspheres are made from a material selected from the group consisting of glass, ceramic, polymeric and carbon materials and mixtures thereof.
Claim 9
Dependent Claim
15 words
An adhesive tape as claimed in claim 7, wherein the low density microspheres are ceramic.
Claim 10
Dependent Claim
15 words
An adhesive tape as claimed in claim 7, wherein the low density microspheres are carbon.
Claim 11
Dependent Claim
19 words
An adhesive tape as claimed in claim 7, wherein the low density microspheres are made of a polymeric material.
Claim 12
Dependent Claim
23 words
An adhesive tape as claimed in claim 10, wherein the polymeric material is selected from the group of phenolic polymers and PVDC copolymers.
Claim 13
Dependent Claim
21 words
An adhesive tape as claimed in claim 10, wherein the polymeric material is an inherently tacky, infusible, pressure sensitive adhesive polymer.
Claim 14
Dependent Claim
14 words
An adhesive tape as claimed in claim 1, wherein the pigment is carbon black.
Claim 15
Dependent Claim
24 words
An adhesive tape as claimed in claim 13, wherein the carbon black is present in an amount of 0.25% to about 5% by weight.
Claim 16
Dependent Claim
26 words
An adhesive tape as claimed in claim 1, wherein the carrier layer further comprises fumed silica in an amount of up to about 10% by weight.
Claim 17
Dependent Claim
30 words
An adhesive tape as claimed in claim 15, wherein the fumed silica is present in the carrier layer in an amount of from about 3 to about 5% by weight.
Claim 18
Dependent Claim
45 words
An adhesive tape as claimed in claim 1, wherein the carrier layer further comprises up to about 5% by weight small, rigid high density, solid microspheres having a density of more than about 1.0 g/cc and an average diameter of less than about 10 microns.
Claim 19
Dependent Claim
28 words
An adhesive tape as claimed in claim 17, wherein the small, rigid high density, solid microspheres have an average diameter of from about 0.1 to about 5 microns.
Claim 20
Dependent Claim
33 words
An adhesive tape as claimed in claim 1, wherein the carrier layer has an elongation of at least about 500 percent and a tensile strength of at least about 0.5 to 1.3 megapascals.
Claim 21
Dependent Claim
65 words
An adhesive tape as claimed in claim 1, wherein the carrier layer has a storage modulus of at least about 10 4 pascals at 0.01 radians frequency and no more than about 5×10 6 pascals at 100 radians frequency and a loss modulus of at least 10 4 pascals at 0.01 radians frequency and no more than about 5×10 6 pascals at 100 radians frequency.
Claim 22
Dependent Claim
64 words
An adhesive tape as claimed in claim 14, wherein the carrier layer has a storage modulus of at least 4×10 4 pascals at 0.01 radians frequency and no more than about 2×10 6 pascals at 100 radians frequency and a loss modulus of at least about 2×10 4 pascals at 0.01 radians frequency and at least about 2×10 6 pascals at 100 radians frequency.
Claim 23
Dependent Claim
20 words
An adhesive tape as claimed in claim 2, wherein the peel adhesion is from about 1300 to about 3000 newtons/meter.
Claim 24
Dependent Claim
18 words
An adhesive tape as claimed in claim 1, wherein the pressure sensitive adhesive polymer matrix is rubber based.
Claim 25
Dependent Claim
18 words
An adhesive tape as claimed in claim 23, wherein the peel adhesion is at least about 3000 newtons/meter.
Claim 26
Dependent Claim
18 words
An adhesive tape as claimed in claim 24 wherein the peel adhesion is at least about 9000 newtons/meter.
Claim 27
Dependent Claim
38 words
An adhesive tape as claimed in claim 1, further comprising a skin layer coated on to at least one side of the carrier layer, said skin layer comprising an adhesive polymer matrix substantially free of low density microspheres.
Claim 28
Dependent Claim
26 words
An adhesive tape as claimed in claim 26, wherein the skin layer has a coating thickness of from about 25 to about 125 grams/m 2 .
Claim 29
Dependent Claim
38 words
An adhesive tape as claimed in claim 1 further comprising a skin layer coated onto at least one side of the carrier layer, said skin layer comprising a heat activatable adhesive substantially free of rigid, low density microspheres.
Claim 30
Dependent Claim
118 words
A pressure sensitive adhesive tape comprising a carrier layer having a thickness of from about 0.25 to about 4.0 millimeters and a skin layer having a coating thickness of at least about 25 g/m 2 on at least one side of the carrier layer, said carrier layer comprising a cross-linked polymer matrix, from about 5% to about 70% by volume low density microspheres and a colored pigment in an amount of from 0.25% to about 5% by weight, said skin layer comprising a pressure sensitive adhesive polymer matrix substantially free of rigid, low density microspheres, wherein the pressure sensitive adhesive tape exhibits substantially no decrease in creep as compared to the same pressure sensitive adhesive tape without pigment.
Claim 31
Dependent Claim
118 words
A pressure sensitive adhesive tape comprising a carrier layer having a thickness of from about 0.25 to about 4.0 millimeters and a skin layer having a coating thickness of at least about 25 g/m 2 on at least one side of the carrier layer, said carrier layer comprising a cross-linked polymer matrix, from about 5% to about 70% by volume low density microspheres and a colored pigment in an amount of from 0.25% to about 5% by weight, said skin layer comprising a pressure sensitive adhesive polymer matrix substantially free of rigid, low density microspheres, wherein the pressure sensitive adhesive tape exhibits substantially no decrease in creep as compared to the same pressure sensitive adhesive tape without pigment.
Claim 32
Dependent Claim
26 words
A pressure sensitive adhesive tape as claimed in claim 29, wherein the carrier layer comprises from about 10 to about 45% by volume low density microspheres.
Claim 33
Dependent Claim
28 words
A pressure sensitive adhesive tape as claimed in claim 29, wherein the carrier layer further comprises fumed silica in an amount of up to about 10% by weight.
Claim 34
Dependent Claim
32 words
A pressure sensitive adhesive tape as claimed in claim 31, wherein the fumed silica is present in the carrier layer of an amount of from about 3 to about 5% by weight.
Claim 35
Dependent Claim
81 words
A pressure sensitive adhesive tape as claimed in claim 29, wherein said tape has an elongation of at least about 300%, a tensile strength of at least 0.5 megapascals, a storage modulus of at least about 10 4 pascals at 0.01 radians frequency and no more than about 2×10 6 pascals at 100 radians frequency and a loss modulus of at least 10 4 pascals at 0.01 radians frequency and no more than about 2×10 6 pascals at 100 radians frequency.
Claim 36
Dependent Claim
66 words
A pressure sensitive adhesive tape as claimed in claim 33, wherein the tape has a storage modulus of at least 4×10 4 pascals at 0.01 radians frequency and no more than about 2×10 6 pascals at 100 radians frequency and a loss modulus of at least about 2×10 4 pascals at 0.01 radians frequency and no more than about 2×10 6 pascals at 100 radians frequency.
Claim 37
Dependent Claim
21 words
A pressure sensitive adhesive tape as claimed in claim 29 wherein the polymer matrix is a pressure sensitive adhesive polymer matrix.
Claim 38
Dependent Claim
32 words
A pressure sensitive adhesive tape as claimed in claim 35, wherein the pressure sensitive adhesive polymer matrix is acrylic based and the peel adhesion is from about 1300 to about 3000 newtons/meter.
Claim 39
Dependent Claim
30 words
A pressure sensitive adhesive tape as claimed in claim 35, wherein the pressure sensitive adhesive polymer matrix is rubber based and the peel adhesion is at least about 3000 newtons/meter.
Claim 40
Dependent Claim
20 words
A pressure sensitive adhesive tape as claimed in claim 37 wherein the peel adhesion is at least about 9000 newtons/meter.
Claim 41
Dependent Claim
134 words
A pressure sensitive adhesive tape comprising a carrier layer having a thickness of from about 0.25% to about 4.0 millimeters and a skin layer having a coating thickness of at least about 25 g/m 2 on each side of the carrie layer, said carrier layer comprising an electron beam-cured pressure sensitive adhesive polymer matrix, from about 10% to about 70% by volume low density microspheres selected from the group consisting of glass, ceramic, polymeric and carbon materials and mixtures thereof, a pigment in an amount of from 0.25% to about 5% by weight, and wherein said skin layer comprises a pressure sensitive adhesive matrix substantially free of rigid, low density microspheres, wherein the pressure sensitive adhesive tape exhibits substantially no decrease in creep as compared to the same pressure sensitive adhesive tape without pigment.
Claim 42
Dependent Claim
134 words
A pressure sensitive adhesive tape comprising a carrier layer having a thickness of from about 0.25% to about 4.0 millimeters and a skin layer having a coating thickness of at least about 25 g/m 2 on each side of the carrie layer, said carrier layer comprising an electron beam-cured pressure sensitive adhesive polymer matrix, from about 10% to about 70% by volume low density microspheres selected from the group consisting of glass, ceramic, polymeric and carbon materials and mixtures thereof, a pigment in an amount of from 0.25% to about 5% by weight, and wherein said skin layer comprises a pressure sensitive adhesive matrix substantially free of rigid, low density microspheres, wherein the pressure sensitive adhesive tape exhibits substantially no decrease in creep as compared to the same pressure sensitive adhesive tape without pigment.
Claim 43
Dependent Claim
17 words
A pressure sensitive adhesive tape as claimed in claim 36, wherein the low density microspheres are ceramic.
Claim 44
Dependent Claim
17 words
A pressure sensitive adhesive tape as claimed in claim 36, wherein the low density microspheres are carbon.
Claim 45
Dependent Claim
21 words
A pressure sensitive adhesive tape as claimed in claim 39, wherein the low density microspheres are made of a polymeric material.
Claim 46
Dependent Claim
25 words
A pressure sensitive adhesive tape as claimed in claim 42, wherein the polymeric material is selected from the group of phenolic polymers and PVDC copolymers.
Claim 47
Dependent Claim
23 words
A pressure sensitive adhesive tape as claimed in claim 42, wherein the polymeric material is an inherently tacky, infusible, pressure sensitive adhesive polymer.
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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) | 1995-03-31 | 1995-09-30 | 1996-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-31 | 1999-09-30 | 2000-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-31 | 2003-09-30 | 2004-03-31 | $7700.00 | Window Closed / Lapsed |