Patent US4581281A successfully refreshed from Google Patents.
US4581281A
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Self-priming pressure-sensitive adhesive tape
Assignee: HB Fuller Licensing and Financing Inc
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Filing: 1984-04-05
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Granted: 1986-04-08
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Expires: 2004-04-05
Abstract
Abstract A self-priming pressure-sensitive adhesive bonding tape is provided having a layer of a primary pressure-sensitive adhesive material coated onto one or more surfaces with a film of a secondary pressure-sensitive adhesive material. Both the primary and secondary pressure-sensitive adhesives are modified by the addition of adhesion promoters to enhance the wetting characteristics of the tape. The film thickness of the secondary pressure-sensitive adhesive is such that the film has discontinuities which enable at least a portion of the primary pressure-sensitive adhesive layer to be directly exposed to the substrate. Bonding is accomplished with the participation of both the primary and secondary pressure-sensitive adhesives.
Inventors
- 👤 Michael J. Gerace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:20
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/10; C09J2203/00; C09J2203/306; C09J2301/00; C09J2301/20; C09J2301/208; C09J2301/30; C09J2301/302; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/28; Y10T428/2804; Y10T428/2848; Y10T428/2852; Y10T428/2857; Y10T428/31504; Y10T428/31511; Y10T428/31515; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T428/31641; Y10T428/31645; Y10T428/31678; Y10T428/31707; Y10T428/3171; Y10T428/31714; Y10T428/31826; Y10T428/3183; Y10T428/31833; Y10T428/31844
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
79 words
A self-priming pressure-sensitive adhesive bonding tape comprising a layer of a primary pressure-sensitive adhesive material containing an effective amount of a first adhesion promoter, and a thin film of a secondary pressure-sensitive adhesive material containing an effective amount of a second adhesion promoter covering said layer of primary pressure-sensitive adhesive material but having discontinuities therein such that when said tape is applied to a substrate both of said primary and secondary pressure-sensitive adhesive materials bond directly to said substrate.
Claim 2
Dependent Claim
79 words
A self-priming pressure-sensitive adhesive bonding tape comprising a layer of a primary pressure-sensitive adhesive material containing an effective amount of a first adhesion promoter, and a thin film of a secondary pressure-sensitive adhesive material containing an effective amount of a second adhesion promoter covering said layer of primary pressure-sensitive adhesive material but having discontinuities therein such that when said tape is applied to a substrate both of said primary and secondary pressure-sensitive adhesive materials bond directly to said substrate.
Claim 3
Dependent Claim
21 words
The self-priming bonding tape of claim 1 in which said thin film has a thickness of between 0.00005 and 0.005 inches.
Claim 4
Dependent Claim
28 words
The self-priming bonding tape of claim 2 in which said secondary pressure-sensitive material is applied at a dry coating weight of between 0.1 and 10.0 grams/ft 2 .
Claim 5
Dependent Claim
54 words
The self-priming bonding tape of claim 1 in which said primary pressure-sensitive adhesive material is selected from the group consisting of natural rubber adhesives, block copolymers, butyl rubber, polyisobutylene, halobutyl rubbers, acrylic adhesives, vinyl ether polymers, silicone pressure-sensitive adhesives, styrene-butadiene rubber, butadiene-acrylonitrile rubber, polychloroprene, polyurethanes, polyvinyl pyrrolidone, and ethylene vinyl acetate and mixtures thereof.
Claim 6
Dependent Claim
18 words
The self-priming bonding tape of claim 1 in which said primary pressure-sensitive adhesive material comprises a butyl rubber.
Claim 7
Dependent Claim
54 words
The self-priming bonding tape of claim 1 in which said secondary pressure-sensitive adhesive material is selected from the group consisting of natural rubber adhesives, block copolymers, butyl rubber, polyisobutylene, halobutyl rubbers, acrylic adhesives, vinyl ether polymers, silicone pressure-sensitive adhesives, styrene-butadiene rubber, butadiene-acrylonitrile rubber, polychloroprene, polyurethanes, polyvinyl pyrrolidone, and ethylene vinyl acetate and mixtures thereof.
Claim 8
Dependent Claim
18 words
Tne self-priming bonding tape of claim 1 in which said secondary pressure-sensitive adhesive material comprises an acrylic adhesive.
Claim 9
Dependent Claim
64 words
The self-priming bonding tape of claim 1 in which said first adhesion promoter is selected from the group consisting of wood rosin and its derivatives, terpene resins, petroleum-based resins, polyolefinic tackifiers, coumarone-indene resins, hydroabietyl alcohol esters, polyisobutylenes, polyamide resins, phenolic resins, epoxy resins, petroleum-based oils, pine tars, acrylic monomers and polymers, polyester resins, melamine resins, and silanes, including mercaptosilanes and epoxysilanes, and mixtures thereof.
Claim 10
Dependent Claim
16 words
The self-priming bonding tape of claim 5 in which said first adhesion promoter is a mercaptosilane.
Claim 11
Dependent Claim
64 words
The self-priming bonding tape of claim 1 in which said second adhesion promoter is selected from the group consisting of wood rosin and its derivatives, terpene resins, petroleum-based resins, polyolefinic tackifiers, coumarone-indene resins, hydroabietyl alcohol esters, polyisobutylenes, polyamide resins, phenolic resins, epoxy resins, petroleum-based oils, pine tars, acrylic monomers and polymers, polyester resins, melamine resins, and silanes, including mercaptosilanes and epoxysilanes, and mixtures thereof.
Claim 12
Dependent Claim
16 words
The self-priming bonding tape of claim 7 in which said second adhesion promoter is an epoxysilane.
Claim 13
Dependent Claim
30 words
The self-priming bonding tape of claim 1 in which said first adhesion promoter is present in an amount of from 0.05% to 10% by weight of said primary pressure-sensitive adhesive.
Claim 14
Dependent Claim
30 words
The self-priming bonding tape of claim 1 in which said second adhesion promoter is present in an amount of from 0.05% to 10% by weight of said secondary pressure-sensitive adhesive.
Claim 15
Dependent Claim
25 words
The self-priming bonding tape of claim 1 in which the thickness of said layer of primary pressure-sensitive adhesive material is from 0.010 to 1.00 inch.
Claim 16
Dependent Claim
97 words
In combination, a laminate comprising a self-priming pressure-sensitive adhesive bonding tape adhered directly to a substrate having a low energy surface, said self-priming pressure-sensitive adhesive bonding tape comprising a layer of a primary pressure-sensitive adhesive material containing an effective amount of a first adhesion promoter, and a thin film of a secondary pressure-sensitive adhesive material containing an effective amount of a second adhesion promoter, said thin film being interposed between said layer and said substrate surface and having discontinuities therein, both of said primary and secondary pressure-sensitive adhesive materials bonding directly to said surface of said substrate.
Claim 17
Dependent Claim
97 words
In combination, a laminate comprising a self-priming pressure-sensitive adhesive bonding tape adhered directly to a substrate having a low energy surface, said self-priming pressure-sensitive adhesive bonding tape comprising a layer of a primary pressure-sensitive adhesive material containing an effective amount of a first adhesion promoter, and a thin film of a secondary pressure-sensitive adhesive material containing an effective amount of a second adhesion promoter, said thin film being interposed between said layer and said substrate surface and having discontinuities therein, both of said primary and secondary pressure-sensitive adhesive materials bonding directly to said surface of said substrate.
Claim 18
Dependent Claim
11 words
The laminate of claim 15 in which said substrate is glass.
Claim 19
Dependent Claim
12 words
The laminate of claim 15 in which said substrate is painted metal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-07 | 1989-10-07 | 1990-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-07 | 1993-10-07 | 1994-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-07 | 1997-10-07 | 1998-04-08 | $7700.00 | Window Closed / Lapsed |