Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1983-02-03
1984-12-04
Dawson, Robert
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
2940209, 106 84, 156325, 428271, 428443, 428703, B32B 3500
Patent
active
044862547
ABSTRACT:
This disclosure is directed to a heat-activated patch or repair composition for metal object or surface capable of maintaining its shape at the temperatures to which it is heated to activate and set the composition and ranging from about 250.degree. to about 500.degree. F. comprising a preponderant concentration of a fibrous adhesive containing silicate, soda and asbestos fibrous cement, and lesser concentrations of iron ore and an alumina-containing air set mortar having Pier test of about 600 to about 800 p.s.i. and comprised of alumina, clay and grog (ground-up fired clay). The aforementioned heat-activated patch or repair composition is utilized in a system for repairing such metal object or surface by intimately associating said composition with asbestos cloth, preferably woven asbestos cloth, by applying said composition to one surface of said asbestos cloth and then wrapping the adhesive composition surface of the woven asbestos cloth around the exterior of the metal object or surface to be repaired. In place of wrapping, said repair system can be applied in overlapping fashion using strips thereof to cover the hole or crack in the surface to be repaired. Then the patch or repair system is heat activated by heating from the opposite surface, viz., the surface opposite to which the patch has been applied, to temperatures ranging from about 250.degree. to about 500.degree. F., and more usually temperatures of about 300.degree. to about 400.degree. F., for a sufficient period of time to activate and set said repair system.
REFERENCES:
patent: 2946395 (1960-07-01), Overland
patent: 3531345 (1970-09-01), Torosian
patent: 3959063 (1976-05-01), Hawthorne
Burke Joseph Patrick
Dawson Robert
Nunez Gustalo
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