Elastomeric ball pressurizing method for adhesive bonding of ass

Details Elastomeric ball pressurizing method for adhesive bonding of ass Elastomeric ball pressurizing method for adhesive bonding of ass

1987-08-26

1989-05-09

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156285, 156382, 264314, 264570, 4254051, 4254052, B32B 3120

Patent

active

048286397

ABSTRACT:
An improved method for forming an assembly of laminated materials is provided. The method eliminates an necessity to evacuate a package or position the assembly in an autoclave for forming. In the method, the assembly (14, 70) is positioned against the die face of a rigid die (12, 72). A cavity of essentially constant volume is formed about the die and assembly and encloses the side of the assembly opposite that in contact with the rigid die. The cavity is filled with expandable spheroids (56). The spheroids are expanded to provide the necessary force on the assembly to urge the assembly against the rigid die to form the completed assembly. Preferably, the expandable spheroids (56) are thermally expandable and can comprise, for example, silicone rubber having a coefficient of thermal expansion of about 50.times.10.sup.-5 inches per inch per degree Fahrenheit.

REFERENCES:
patent: 1572936 (1926-02-01), Kemp
patent: 3249964 (1966-05-01), Shaler
patent: 4210621 (1980-07-01), Snover et al.
patent: 4264556 (1981-04-01), Kumar et al.
patent: 4704240 (1987-11-01), Reavely et al.

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