Stock material or miscellaneous articles – Structurally defined web or sheet – Including aperture
Patent
1995-12-22
1998-06-02
Watkins, William
Stock material or miscellaneous articles
Structurally defined web or sheet
Including aperture
428131, 428137, 428138, 428145, 428901, 156 8912, 156 8928, 264651, 264614, 264619, 264660, 264672, 427 97, 427 96, 427261, 427191, 4273722, 29851, B29C 3700, B32B 324
Patent
active
057596697
ABSTRACT:
The present invention relates generally to a new apparatus and method for screening using porous backing material. More particularly, the invention encompasses an apparatus that uses a porous backing material which is adhered to a green sheet during the screening process. Basically, a backing layer having a very high porosity is adhered to a green sheet, while the green sheet is screened. During the drying process of the green sheet some of the screening fluids are absorbed by the porous backing layer, which allows the screened vias of the green sheet to have a smooth surface.
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K. S. Desai et al., "Backing Material for MLC Screening", IBM Technical Disclosure Bulletin, vol. 24 No. 10 p. 5119 Mar. 1982.
Calli Cynthia Jeane
Casey Jon Alfred
Cook Darren T.
Goland David B.
Knickerbocker John Ulrich
Ahsan Aziz M.
International Business Machines - Corporation
Watkins William
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