Plastic and nonmetallic article shaping or treating: processes – Forming articles by uniting randomly associated particles – With subsequent cutting – grooving – breaking – or comminuting
Reexamination Certificate
2005-02-08
2005-02-08
Lechert, Jr., Stephen J. (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Forming articles by uniting randomly associated particles
With subsequent cutting, grooving, breaking, or comminuting
C264S109000, C264S122000, C264S123000
Reexamination Certificate
active
06852259
ABSTRACT:
A low cost, glass preform for use in making SRIM molded composite parts is formed by introducing a commercially available, b-stageable thermosetting powder binder either a preformed matting structure or to a continuous glass fiber strand that is subsequently chopped to form a matting structure. The b-stageable thermosetting powder binder will selectively migrate to the junction of two the glass fiber strands contained in the matting at elevated temperatures without crosslinking to adhere the two strands together, therein forming a preform having good retention characteristics. The preform may then be introduced to a mold and combined with a liquid thermosetting matrix resin to form a composite part.
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Eckert Inger H.
Gasaway Maria C.
Lechert Jr. Stephen J.
Owens Corning Fiberglas Technology Inc.
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