Method and apparatus of producing cavities in LTCC substrates

Details Method and apparatus of producing cavities in LTCC substrates Method and apparatus of producing cavities in LTCC substrates

1996-07-25

1997-11-04

Sells, James

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156 89, 156289, 156323, 156382, 156580, B32B 3104, B32B 3120

Patent

active

056835353

ABSTRACT:
A method and apparatus which replaces the silicone molds heretofore utilized for protecting the integrity of the cavities formed during the lamination lay-up stage of a low temperature cofired ceramic substrate fabrication. Now a single sheet of compliant latex rubber is now applied over a polyimide template placed on top of the laminations following their stack-up on a tooling plate. Upon the application of pressure in an isostatic lamination procedure, the sheet of latex rubber acts to safely transfer laminating pressure to the cavities formed in the composite substrate structure without rounding the corners or edges thereof.

REFERENCES:
patent: 4636275 (1987-01-01), Norell
patent: 4680075 (1987-07-01), McNeal et al.
patent: 4737208 (1988-04-01), Bloechle et al.
patent: 5116440 (1992-05-01), Takeguchi et al.
patent: 5240671 (1993-08-01), Carey
patent: 5435875 (1995-07-01), Saitoh et al.
patent: 5478420 (1995-12-01), Gauci et al.
patent: 5538582 (1996-07-01), Natarajan et al.

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