Screen printing stencil for making elastomer sealing layers on f

Details Screen printing stencil for making elastomer sealing layers on f Screen printing stencil for making elastomer sealing layers on f

1986-11-12

1988-08-02

Dees, Jose G.

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making printing plates

430309, 430320, 10112821, 1011284, G03F 712

Patent

active

047613645

ABSTRACT:
Screen printing stencil for making sealing layers of elastomer material on a flat gasket. A screen carrying a photoresist layer exhibits areas of increased height on the side with which it is made to contact the flat gasket, in order to simultaneously produce sealing layer areas of different thicknesses. To make such a screen printing stencil, its screen is first provided with a first photoresist layer in which areas are then delimited by means of adhesive tapes, following which these areas may be coated with a second photoresist layer. The desired screen printing stencil is then obtained by both photoresist layers being jointly exposed and the non-exposed areas of the photoresist material being washed out.

REFERENCES:
patent: 4078488 (1978-03-01), Wright et al.
patent: 4216019 (1980-08-01), Reed et al.
Handbuch fur den Siebdruck, pp. 74-77 and an English Translation.

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