Technique for forming resin-impregnated fiberglass sheets with i

Details Technique for forming resin-impregnated fiberglass sheets with i Technique for forming resin-impregnated fiberglass sheets with i

1997-07-09

2000-08-01

Weisberger, Richard

Fabric (woven, knitted, or nonwoven textile or cloth, etc.)

Coated or impregnated woven, knit, or nonwoven fabric which...

Coating produced by extrusion

442 64, 442 66, 442 71, 428356, 428901, B05D 138, B32B 3108

Patent

active

060966653

ABSTRACT:
A method for coating cloth especially fiberglass sheets with a resin and resulting structure is provided. The coating is performed in two steps. In the first step, essentially all of the strands of the fiberglass are coated with the resin solvent mixture as well as most of the interstices or openings, although some of the interstices or openings have holes where the coating does not completely fill in. This first coating is then partially cured to the extent that it will not redissolve in a second coating of the same resin solution. The coated fiberglass with partially cured resin thereon is then given a second coating of the same resin mixture which coats the first coating and fills in any holes in the first coating. This second coating is then partially cured, which advances the cure of the first coating and results in an impregnated fiberglass cloth structure for use as sticker sheets. This substantially reduces pinholing.

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