US4435469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot melt adhesive for bonding paper to glass fiber
Assignee: Johns Manville
•
Filing: 1982-04-28
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Granted: 1984-03-06
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Expires: 2002-04-28
Abstract
Abstract A relatively high melting point thermoplastic hot melt adhesive suitable for bonding a paper facing to glass fiber based insulating materials to produce good adhesion and superior water vapor barrier properties, containing in percent by weight: ______________________________________ Microcrystalline Wax 8-12% Synthetic Polyethylene Wax 8-12% Hydrocarbon Resin 13-17% Ethylene-Vinyl Acetate 6-12% copolymer Calcium Carbonate Filler Up to 65% BHT antioxidant .002-.004% ______________________________________
Inventors
- 👤 Ralph M. Fay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:05
CPC Classifications
C; C09; C09J; C09J157/00; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/54; C08L91/00; C08L91/06; C09J2301/00; C09J2301/30; C09J2301/304; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/24995; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2822; Y10T442/00; Y10T442/60; Y10T442/693; Y10T442/699
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
30 words
A hot melt adhesive composition consiting essentially of by weight: ______________________________________
Microcrystalline Wax
8-12%
Synthetic Polyethylene Wax
8-12%
Hydrocarbon Resin 13-17%
Ethylene-Vinyl Acetate
6-12%
Copolymer
Filler and Balance
Antioxidant.
______________________________________
Claim 2
Dependent Claim
30 words
A hot melt adhesive composition consiting essentially of by weight: ______________________________________
Microcrystalline Wax
8-12%
Synthetic Polyethylene Wax
8-12%
Hydrocarbon Resin 13-17%
Ethylene-Vinyl Acetate
6-12%
Copolymer
Filler and Balance
Antioxidant.
______________________________________
Claim 3
Dependent Claim
33 words
The hot melt adhesive composition of claim 1 wherein the microcrystalline wax has a melt point of approximately 174 degrees F. ±5 degrees F., and a flash point of approximately 580 degrees F.
Claim 4
Dependent Claim
28 words
The hot melt adhesive composition of claim 1 or 2 wherein the synthetic polyethylene wax has a melt point between about 215 degrees F. and 235 degrees F.
Claim 5
Dependent Claim
36 words
The hot melt adhesive composition of claim 1 wherein the ethyene-vinyl acetate copolymer has a melt index of from about 5 to about 28 and a percentage of vinyl acetate from about 27 to about 29.
Claim 6
Dependent Claim
40 words
The hot melt adhesive composition of claim 1 or 4 wherein the hydrocarbon resin has a softening point of about 100 degrees C. to about 103 degrees C. and an average molecular weight of from about 640 to about 685.
Claim 7
Dependent Claim
40 words
The hot melt adhesive of claim 1 wherein the filler is calcium carbonate powder having a majority of particle sizes from between about 3 to about 11 microns and which comprises up to 65% of the weight of the composition.
Claim 8
Dependent Claim
57 words
A hot melt adhesive coated kraft paper wherein the composition, which consists essentially of by weight ______________________________________
Microcrystalline Wax
8-12%
Synthetic Polyethylene Wax
8-12%
Hydrocarbon Resin 13-17%
Ethylene Vinyl 6-12%
Acetate Copolymer
Filler and antioxidant
Balance
(up to 65%)
______________________________________ is coated on said Kraft at a coverage of about 25 ±2 lbs. per 3000 sq. ft.
Claim 9
Dependent Claim
57 words
A hot melt adhesive coated kraft paper wherein the composition, which consists essentially of by weight ______________________________________
Microcrystalline Wax
8-12%
Synthetic Polyethylene Wax
8-12%
Hydrocarbon Resin 13-17%
Ethylene Vinyl 6-12%
Acetate Copolymer
Filler and antioxidant
Balance
(up to 65%)
______________________________________ is coated on said Kraft at a coverage of about 25 ±2 lbs. per 3000 sq. ft.
Claim 10
Dependent Claim
31 words
The Kraft paper of claim 7 wherein the microcrystalline wax has a melt point of approximately 174 degrees F. ±5 degrees F., and a flash point of approximately 580 degrees F.
Claim 11
Dependent Claim
25 words
The Kraft paper of claim 8 wherein the synthetic polyethylene wax has a melt point of between about 215 degrees F. and 235 degrees F.
Claim 12
Dependent Claim
36 words
The Kraft paper of claim 9 wherein the hydrocarbon resin has a softening point of about 100 degrees C. to about 103 degrees C. and an average molecular weight of from about 640 to about 685.
Claim 13
Dependent Claim
36 words
The Kraft paper of claim 7 or 10 wherein the ethylene vinyl-acetate copolymer has a melt index of from about 5 to about 28 and a percentage of vinyl acetate from about 27 to about 29.
Claim 14
Dependent Claim
27 words
The Kraft paper of claim 11 wherein the filler is calcium carbonate powder having a majority of particle sizes from between about 3 to about 11 microns.
Claim 15
Dependent Claim
21 words
The Kraft paper of claim 12 wherein less than 0.004% butylated hydroxy toluene antioxidant is used in the hot melt adhesive.
Claim 16
Dependent Claim
44 words
The Kraft paper of claim 7 wherein the Kraft paper is approximately 20 to 45 lb. paper and exhibits a water vapor permeability flat uncreased, measured according to ASTM E 96-80 at 90 degrees F. and 50% relative humidity, of less than 0.3 perms.
Claim 17
Dependent Claim
30 words
The Kraft paper of claim 14 wherein the creased water vapor permeability tested according to TAPPI T-512 at 90 degrees F. and 50% relative humidity is less than 3.0 perms.
Claim 18
Dependent Claim
64 words
A fiber glass mat adhered to a Kraft paper facing wherein the paper and the fiber glass are intimately contacted at temperatures exceeding 140 degrees F. and the composition adhering the fiber glass mat to the Kraft paper facing consists essentially of by weight: ______________________________________
Microcrystalline Wax
8-12%
Synthetic Polyethylene Wax
8-12%
Hydrocarbon Resin 13-17%
Ethylene-Vinyl Acetate
6-12%
Copolymer
Filler and Balance
Antioxidant.
______________________________________
Claim 19
Dependent Claim
64 words
A fiber glass mat adhered to a Kraft paper facing wherein the paper and the fiber glass are intimately contacted at temperatures exceeding 140 degrees F. and the composition adhering the fiber glass mat to the Kraft paper facing consists essentially of by weight: ______________________________________
Microcrystalline Wax
8-12%
Synthetic Polyethylene Wax
8-12%
Hydrocarbon Resin 13-17%
Ethylene-Vinyl Acetate
6-12%
Copolymer
Filler and Balance
Antioxidant.
______________________________________
Claim 20
Dependent Claim
35 words
The fiber glass and paper article of claim 16 wherein the composition is coated on the paper prior to contact with the fiber glass with a continuous coverage of 25±2 lbs per 3000 sq. ft.
Claim 21
Dependent Claim
39 words
The fiber glass and paper article of claim 16 wherein said composition comprises by weight: ______________________________________
Microcrystalline Wax
about 10%
Synthetic Polyethylene Wax
about 10%
Hydrocarbon Resin about 15%
Ethylene-Vinyl Acetate
about 6%
Copolymer
Filler and Antioxidant
Balance.
______________________________________
References Cited (Backward Citations)
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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) | 1987-03-06 | 1987-09-05 | 1988-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-06 | 1991-09-05 | 1992-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-06 | 1995-09-05 | 1996-03-06 | $7700.00 | Window Closed / Lapsed |