Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Reexamination Certificate
2006-01-13
2011-10-11
Tucker, Philip (Department: 1745)
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
C264S313000, C264S319000, C264S554000, C264SDIG050, C425S389000, C425S405100, C425SDIG019
Reexamination Certificate
active
08034278
ABSTRACT:
Apparatus and methods for molding composite bodies into composite parts using pressure. A lower inflexible mold is combined with an elastic upper mold layer to form a molding cavity in which the composite body to be molded is placed. An elastic pressure layer is used in combination with the upper mold layer to form a pressure chamber. A flexible expansion control layer is used to limit the increase in surface area of the pressure layer during pressurization. A perimeter retention lock is provided to prevent the perimeters of the elastic and flexible layers from moving inward or away from the lower mold during application of pressure to the pressure chamber.
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Erik Larsen, et al., Investigation of a Two-Stage Injection Process to Reduce the Effects of In-Plane Resin Flow, AIAA-2002-0026, pp. 1-7.
Bell William
Bielawski W. Mark
Hexcel Corporation
Oldenkamp David J.
Tucker Philip
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