Process for dry fiber winding and impregnating of projectiles

Details Process for dry fiber winding and impregnating of projectiles Process for dry fiber winding and impregnating of projectiles

1987-10-05

1989-10-24

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Vacuum treatment of work

To degas or prevent gas entrapment

264236, 264258, 264336, 2643287, B29C 3502, B29C 4502, B29C 4514

Patent

active

048760501

ABSTRACT:
A process for dry fiber winding in the absence of resin and subsequent resin impregnating of objects such as projectile bodies having a recessed area for receiving the windings. The process includes winding the projectile body with dry glass or other dry fibers in the absence of resin, placing the wound projectile body into a heated mold, applying a vacuum, pressure injecting a metered amount of resin into the mold, applying pressure to the resin by means of a pressurized ram to impregnate the fibers, allowing the resin to cure to the gel stage within the mold, removing the projectile body from the mold without distrubing the gel surface, and completing cure of the resin at room temperature or in a curing oven.

REFERENCES:
patent: 2356081 (1944-08-01), Norotng
patent: 3654009 (1972-04-01), Judd
patent: 3743561 (1973-07-01), Koontz
patent: 3843759 (1974-10-01), Keeham
patent: 3954379 (1976-05-01), Klocke
patent: 4460531 (1984-07-01), Harris
patent: 4515547 (1985-05-01), Rother
patent: 4540536 (1985-09-01), Altmann
"Advanced Composites", Filament Winding: Beyond the Symmetrical, Jan./Feb. 1987, pp. 30-38.

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