Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1982-02-25
1984-05-01
Kimlin, Edward C.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156103, 156214, 156224, 428426, 65 63, 264549, B32B 1700, B32B 3100, B29C 1704, C03B 2100
Patent
active
044459530
ABSTRACT:
Lightweight aircraft transparencies are shaped to a desired configuration by laying up a plurality of flat oversized plastic sheets in a desired sequence to form a flat assembly. Portions of the marginal edges of the flat assembly are supported on a female support ring having a non-planar supporting surface. The assembly is first shaped at a temperature below its deformation temperature to a preliminary shape where its marginal edge portions conform to the non-planar supporting surface of the female support ring. While the marginal edges of the preliminarily shaped assembly are maintained in conformity with the female support ring, the assembly is uniformly exposed in an enclosed autoclave to elevated pressures to minimize outgassing and to elevated temperatures above its deformation temperature. A male form having an outline smaller than the female support ring engages the central portion of the preliminarily shaped assembly to impress the desired final shape thereto, e.g., a compound configuration. Thereafter, the marginal edge portions of the finally shaped and laminated assembly are trimmed away to leave the central portion of the assembly with a desired shape.
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Falasco Louis
Kimlin Edward C.
Mates Edward I.
PPG Industries Inc.
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