Process for preparing glass ceramic green sheets

Details Process for preparing glass ceramic green sheets Process for preparing glass ceramic green sheets

1995-06-23

1997-08-26

Czaja, Donald E.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

By casting liquids on a solid supporting or shaping surface

264144, 264650, B29D 700, C04B 3564

Patent

active

056607814

ABSTRACT:
Low-firing glass ceramic green sheets useful in the production of glass ceramic multilayer substrates are prepared from a coarse raw powder material comprising a B.sub.2 O.sub.3 -containing glass powder. The coarse raw powder material is initially subjected to wet grinding, either in an alcohol-free organic solvent in the presence or absence of an organic binder, or in an alcohol-containing organic solvent in the presence of an organic binder, until the powder is comminuted to a particle size suitable for tape casting. The wet-ground powder is slurried with an organic solvent and an organic binder, and the slurry is cast into sheets. The resulting green sheets have improved elongation and can be punched to form fine through holes with a small pitch.

REFERENCES:
patent: 4621066 (1986-11-01), Nishigaki et al.
patent: 4833104 (1989-05-01), MacDowell et al.
patent: 4833497 (1989-05-01), Claar et al.
patent: 5306646 (1994-04-01), Lauf
patent: 5514451 (1996-05-01), Kumar et al.

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