US5447784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic dissipating cover tape
Assignee: Image Products Group LLC
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Filing: 1994-06-01
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Granted: 1995-09-05
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Expires: 2014-06-01
Abstract
Abstract A transparent static dissipative adhesive tape is disclosed. The tape comprises a transparent polymer substrate having opposed first and second surfaces, a transparent static dissipative coating on the first surface of the substrate, and a transparent static dissipative adhesive coating on the second surface of the substrate. The adhesive coating comprises a transparent conductive layer on the second surface formed of conductive particles in a polymer matrix, and a transparent adhesive layer without any conductive particles over the conductive layer. The exposed surface of the adhesive layer exhibits conductivity substantially the same as the conductivity of the underlying conductive layer.
Inventors
- 👤 Gregory D. Williams
- 👤 Leonard Holley
- 👤 Jeffrey D. Lovelace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:33
CPC Classifications
C; C09; C09J; C09J9/00; C09J9/02; B; B65; B65D; B65D73/00; B65D73/02; C09J7/00; C09J7/20; C09J7/22; C09J7/30; C09J7/38; H; H05; H05K; H05K9/00; H05K9/0067; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10T; Y10T428/00; Y10T428/28; Y10T428/2848; Y10T428/2852
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
100 words
A transparent static dissipative adhesive tape comprising: a transparent polymer substrate having opposed first and second surfaces; a transparent static dissipative coating on said first surface of said substrate; and a transparent static dissipative adhesive coating on said second surface of said substrate, said adhesive coating comprising, a transparent conductive layer on said opposed second surface of conductive particles in a polymer matrix, and a compatible transparent adhesive layer without any conductive particles coated over said conductive layer, wherein the exposed surface of said adhesive layer exhibits conductivity substantially the same as the conductivity of said underlying coated conductive layer.
Claim 2
Dependent Claim
100 words
A transparent static dissipative adhesive tape comprising: a transparent polymer substrate having opposed first and second surfaces; a transparent static dissipative coating on said first surface of said substrate; and a transparent static dissipative adhesive coating on said second surface of said substrate, said adhesive coating comprising, a transparent conductive layer on said opposed second surface of conductive particles in a polymer matrix, and a compatible transparent adhesive layer without any conductive particles coated over said conductive layer, wherein the exposed surface of said adhesive layer exhibits conductivity substantially the same as the conductivity of said underlying coated conductive layer.
Claim 3
Dependent Claim
29 words
A static dissipative tape according to claim 1 wherein said polymer substrate is selected from the group consisting of polymers, polypropylenes, polyethylenes, polystyrenes, polyimides, nylons, polymethanes and polyvinyl chlorides.
Claim 4
Dependent Claim
19 words
A static dissipative tape according to claim 2 wherein said substrate is between about 0.15 and 3 mils thick.
Claim 5
Dependent Claim
33 words
A static dissipative tape according to claim 1 wherein said transparent static dissipative coating on said first surface of said substrate is selected from the group consisting of nickel-chromium alloys and magnesium-silicate clays.
Claim 6
Dependent Claim
45 words
A static dissipative tape according to claim 4 wherein said static dissipative coating comprises a magnesium-silicate clay in a binder selected from the group consisting of acrylic copolymers, chlorinated rubber, mixtures of chlorinated rubber and ethylene vinyl acetate, polyester, polyurethane, polyvinyl acetate, or polyvinyl chloride.
Claim 7
Dependent Claim
21 words
A static dissipative tape according to claim 1 and further comprising a primer layer on said second surface of said substrate.
Claim 8
Dependent Claim
28 words
A static dissipative tape according to claim 6 wherein said primer layer is a polymer selected from the group consisting of: polyurethane, polyester, nitrile phenolics, and acrylic polymers.
Claim 9
Dependent Claim
26 words
A static dissipative tape according to claim 1 wherein said conductive particles in said adhesive layer comprise doped oxides of antimony and doped oxides of tin.
Claim 10
Dependent Claim
53 words
A static dissipative tape according to claim 1 wherein said conductive particles in said adhesive layer comprise: particles selected from the group consisting of mica, silica, and titanium dioxide; and wherein said particles are conductively coated with coatings selected from the group consisting of doped oxides of antimony and doped oxides of tin.
Claim 11
Dependent Claim
26 words
A static dissipative tape according to claim 1 wherein said adhesive layer comprises a heat-sealable mixture of ethylene vinyl acetate, chlorinated rubber, and a chlorinated olefin.
Claim 12
Dependent Claim
22 words
A static dissipative tape according to claim 10 wherein said adhesive layer will melt and flow at temperatures of about 170° C.
Claim 13
Dependent Claim
53 words
A static dissipative tape according to claim 1 wherein said static dissipative coating on said first surface has a resistivity of between about 10 4 and 10 10 ohms per square, and said exposed surface of said adhesive layer has a resistivity of between about 10 4 and 10 7 ohms per square.
Claim 14
Dependent Claim
121 words
A transparent static dissipative adhesive tape comprising: a transparent polyester substrate having opposed first and second surfaces; a transparent static dissipative coating on said first surface of said substrate; and a transparent static dissipative adhesive coating on said second surface of said substrate, said adhesive coating comprising, a polyurethane primer layer on said opposed second surface of said substrate, a compatible transparent conductive layer on said polyurethane primer layer, and formed of conductive particles in a matrix blend of ethylene vinyl acetate and chlorinated rubber, and a transparent adhesive layer without any conductive particles coated over said conductive layer, wherein the exposed surface of said adhesive layer exhibits conductivity substantially the same as the conductivity of said underlying coated conductive layer.
Claim 15
Dependent Claim
121 words
A transparent static dissipative adhesive tape comprising: a transparent polyester substrate having opposed first and second surfaces; a transparent static dissipative coating on said first surface of said substrate; and a transparent static dissipative adhesive coating on said second surface of said substrate, said adhesive coating comprising, a polyurethane primer layer on said opposed second surface of said substrate, a compatible transparent conductive layer on said polyurethane primer layer, and formed of conductive particles in a matrix blend of ethylene vinyl acetate and chlorinated rubber, and a transparent adhesive layer without any conductive particles coated over said conductive layer, wherein the exposed surface of said adhesive layer exhibits conductivity substantially the same as the conductivity of said underlying coated conductive layer.
Claim 16
Dependent Claim
28 words
A static dissipative tape according to claim 13 wherein said primer layer is a polymer selected from the group consisting of: polyurethane, polyester, nitrile phenolics, and acrylic polymers.
Claim 17
Dependent Claim
49 words
A static dissipative tape according to claim 13 wherein said adhesive layer has a thickness of between about 0.15 and 0.50 mil; said conductive layer has a thickness of between about 0.15 and 0.25 mil; and said primer layer has a thickness of between about 0.25 and 0.28 mil.
Claim 18
Dependent Claim
24 words
A static dissipative tape according to claim 15 wherein said adhesive layer will seal at temperatures of between about 170° C. and 200° C.
Claim 19
Dependent Claim
30 words
A static dissipative tape according to claim 13 wherein said transparent static dissipative coating on said first surface is selected from the group consisting of nickel-chromium alloys and magnesium-silicate clays.
Claim 20
Dependent Claim
45 words
A static dissipative tape according to claim 17 wherein said static dissipative coating comprises a magnesium-silicate clay in a binder selected from the group consisting of acrylic copolymers, chlorinated rubber, mixtures of chlorinated rubber and ethylene vinyl acetate, polyester, polyurethane, polyvinyl acetate, or polyvinyl chloride.
Claim 21
Dependent Claim
52 words
A static dissipative tape according to claim 13 wherein said conductive particles in said adhesive layer comprise: particles selected from the group consisting of mica and titanium dioxide; and wherein said particles are conductively coated with coatings selected from the group consisting of doped oxides of antimony and doped oxides of tin.
Claim 22
Dependent Claim
52 words
A static dissipative tape according to claim 13 wherein said static dissipative coating on said first surface has a resistivity of between about 10 5 and 10 10 ohms per square, and said surface of said adhesive layer has a resistivity of between about 10 4 and 10 8 ohms per square.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1998-09-04 | 1999-03-06 | 1999-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-04 | 2003-03-06 | 2003-09-05 | $3760.00 | Window Closed / Lapsed |
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