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US 4,786,528 AGranted
Process for treating reinforced polymer composite
AssigneeInternational Business Machines Corporation
InventorsWilliam J. Amelio, Voya Markovich, William J. McCarthy, Allen F. Moring, Peter A. Moschak, Douglas H. Strope
Life of this patent
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Abstract
Reinforced synthetic polymer composite is treated by heating at a temperature and for a time sufficient to obtain a moisture content below that for the relative humidity level at which the composite is to be drilled and/or photoresist exposed; and then subjecting it to conditions to increase the moisture content to that for the relative humidity level of the drilling.
Claims16
A method for treating a reinforced, synthetic, polymer composite which comprises:
- (a) heating the composite at a temperature and for a time sufficient to obtain a moisture content below that for the relative humidity level at which the composite is to be subjected to drilling subsequently;
- and (b) then subjecting the composite to a controlled environment having said relative humidity level for a time sufficient to increase the moisture content of the composite to that for said relative humidity level to thereby obtain a predictable amount of linear expansion.
Dependencies are inferred from the claim text.