US4327150A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of bonding plasticized elastomer to metal and articles produced thereby
Assignee: National Aeronautics and Space Administration
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Filing: 1980-12-19
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Granted: 1982-04-27
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Expires: 2000-12-19
Abstract
Abstract Plasticized elastomer is securely bonded to a metal surface by interposing between the adhesive-coated metal surface and the elastomer a sheet of material obtained by combining adhesive with a portion of the elastomer that has been treated to remove plasticizers therefrom and heating the assembly in a mold under pressure. The sheet material is made up by dissolving a portion of the plasticized elastomer in an organic solvent, casting the solution, exposing it to a vacuum to remove the solvent and plasticizers, dissolving the de-plasticized material in liquid adhesive and casting and drying the resulting liquid.
Inventors
- 👤 William T. White
- 👤 Johnny M. Clemons
- 👤 Frank E. Ledbetter, III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:48
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/06; B32B7/00; B32B7/04; B32B7/12; C; C08; C08J; C08J5/00; C08J5/12; C08J5/124; C08J2321/00; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/269; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696; Y10T428/31707; Y10T428/3171; Y10T428/31826; Y10T428/3183
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
134 words
The method of bonding a plasticized rubber elastomer body to a metal surface which comprises: (a) applying a primer to the metal surface; (b) applying an adhesive to the resulting primed surface; (c) dissolving a portion of said plasticized rubber elastomer in an organic solvent; (d) removing the plasticizers from the resulting solution; (e) combining the resulting de-plasticized rubber elastomer with a portion of said adhesive to produce a liquid; (f) casting the resulting liquid on a flat surface and allowing the cast material to dry so as to produce a sheet of deplasticized, adhesive-containing material; (g) disposing said sheet between and in contact with the adhesive-coated metal surface and the plasticized rubber elastomer body; and (h) heating the resulting assembly under pressure until said sheet is bonded to said surface and said body.
Claim 2
Independent Claim
134 words
The method of bonding a plasticized rubber elastomer body to a metal surface which comprises: (a) applying a primer to the metal surface; (b) applying an adhesive to the resulting primed surface; (c) dissolving a portion of said plasticized rubber elastomer in an organic solvent; (d) removing the plasticizers from the resulting solution; (e) combining the resulting de-plasticized rubber elastomer with a portion of said adhesive to produce a liquid; (f) casting the resulting liquid on a flat surface and allowing the cast material to dry so as to produce a sheet of deplasticized, adhesive-containing material; (g) disposing said sheet between and in contact with the adhesive-coated metal surface and the plasticized rubber elastomer body; and (h) heating the resulting assembly under pressure until said sheet is bonded to said surface and said body.
Claim 3
Dependent Claim
30 words
The method of claim 1 wherein the assembly is heated in a mold at a temperature of 275° F. to 325° F. and a pressure of 2000 to 2500 psi.
Claim 4
Dependent Claim
14 words
The method of claim 2 wherein said sheet is at least 25 mils thick.
Claim 5
Dependent Claim
24 words
The method of claim 3 wherein about 20 parts by volume of adhesive are combined with 10 parts de-plasticized material in forming said sheet.
Claim 6
Dependent Claim
33 words
A bonded article comprising a metal substrate having adhesively bonded thereto a sheet comprising a mixture of adhesive and de-plasticized rubber elastomeric material and a rubber elastomeric body adhesively bonded to said sheet.
Claim 7
Dependent Claim
33 words
A bonded article comprising a metal substrate having adhesively bonded thereto a sheet comprising a mixture of adhesive and de-plasticized rubber elastomeric material and a rubber elastomeric body adhesively bonded to said sheet.
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) | 1985-04-26 | 1985-10-26 | 1986-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-04-26 | 1989-10-26 | 1990-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-04-26 | 1993-10-26 | 1994-04-27 | $7700.00 | Window Closed / Lapsed |