Coating processes – With pretreatment of the base
Patent
1985-10-23
1987-09-01
Lusignan, Michael R.
Coating processes
With pretreatment of the base
156181, 427386, 4273898, 4274301, B05D 118, B05D 302, B32B 502, D04H 308
Patent
active
046908366
ABSTRACT:
A method is disclosed for the manufacture of void-free prepregs formed by the impregnation of a reinforcing cloth (e.g. glass fiber cloth) with a solution of a thermosetting resin (e.g. epoxy resin). In the method, the reinforcing cloth is first prewetted with a liquid medium containing a solvent for the resin which has a viscosity less than that of the solution of thermosetting resin. The prewetted cloth is impregnated with a solution of the resin and then heated to remove the solvent and cure the resin. The prepregs are used in the manufacture of printed circuit boards.
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Clarke Thomas C.
Lu Neng H.
Tomkiewicz Yaffa
Tong Ho M.
International Business Machines Corp.
Lusignan Michael R.
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