Method of continuously vacuum impregnating fibrous sheet materia

Details Method of continuously vacuum impregnating fibrous sheet materia Method of continuously vacuum impregnating fibrous sheet materia

1986-07-22

1988-08-30

Morgenstern, Norman

Coating processes

Electrical product produced

Welding electrode

427 531, 427294, 427296, 118 50, B05D 306, B05D 300, C23C 1400

Patent

active

047676434

ABSTRACT:
A void-free prepreg is made by contacting a porous sheet material with a resin so that resin enters the sheet, providing a subatmospheric pressure on one side of the resin-containing sheet to draw resin through the sheet, and then B-staging the resin-containing sheet.

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patent: 4440808 (1984-04-01), Mitter
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