Use site production of sandblasting photomasks

Details Use site production of sandblasting photomasks Use site production of sandblasting photomasks

1992-02-11

1994-12-06

Barry, Chester T.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

1562755, 1562757, 430 5, B32B 3100

Patent

active

053707621

ABSTRACT:
Photomasks used for sandblasting and sandcarving may be readily produced by the user of the photomask in a simple and relatively inexpensive manner. The user places a stencil and print positive in a manual clamping structure --between a pivoted glass cover and foam covered base and exposes them to about 60-90 seconds of ultraviolet light from a 500 watt bulb. After removing the print positive, the stencil is then placed on a support surface above a tank, and reciprocating spray heads direct 100 psi, 90 degrees F. water onto the stencil to remove uncured emulsion. A combination pump/heater within the tank recirculates tank water to the spray heads. The stencil is then hand blotted, e.g. using a lamb's wool roller, and then dried in a microwave oven at low power for about eight minutes. Then it is placed on newspaper, and hat activated liquid adhesive is placed in a pool at one end of it and manually drawn over it with a draw bar, to produce the final photomask.

REFERENCES:
patent: 3808751 (1974-05-01), Usui
patent: 4522858 (1985-06-01), Desson
patent: 4746968 (1988-05-01), Wear
patent: 4824498 (1989-04-01), Goodwin et al.
patent: 4858394 (1989-08-01), Lalumiere et al.
Rayzist Photomask Inc. Sandblasting Equipment, four page folded pamphlet, 1989.
"It's New! deep-cut sandblasting Made East", Rayzist Photomask, Inc., four page folded pamphlet, 1989.
"Introducing Cemetery Carved Granite", Honor Life Memorials/Rayzist Photomask, Inc., four page folded pamphlet, 1989.

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