Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – Chamber enclosing work during bonding and/or assembly
Patent
1988-08-25
1989-06-27
Ball, Michael W.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
Chamber enclosing work during bonding and/or assembly
156285, 425DIG60, 428 69, B32B 3106
Patent
active
048426709
ABSTRACT:
Methods are disclosed for forming silicone rubber vacuum bag assemblies which can be used repeatedly to debulk and autoclave composite layups. These bags can be formed of a single layup of uncured silicone rubber over a tool of a simple shape or as a layup of uncured silicone rubber over the totality of the tool and a prepreg consisting of a fiber in uncured silicone rubber laid up over areas which do not include male and female radii on the tool. Additionally, a further bag can be constructed by removing those portions of a simple bag which overlay recesses and female radii followed by curing of the silicone rubber and filling of the recesses within uncured silicone rubber followed by a second cure period. Each of the vacuum bag assemblies of the invention is postcured preferredly removed from its defining tool so as to stabilize and fully shrink the silicone rubber. The vacuum bag assemblies are mounted in a silicone rubber membrane which is preferably then supported in a frame.
REFERENCES:
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patent: 3262830 (1966-07-01), Vincent
patent: 3666600 (1969-03-01), Yoshino
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patent: 4664737 (1987-05-01), Schlosstein
"Use of High Strength RTV Silicone Rubber in Contour Vacuum Bag Molding" Dow Corning New Products Information, 5/3/83.
Callis Richard A.
James Darryl G.
Anderson Terry J.
Ball Michael W.
Block Robert B.
Northrop Corporation
Yoder Michele K.
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