Method of making a stencil for etching glass

Details Method of making a stencil for etching glass Method of making a stencil for etching glass

1990-10-29

1992-09-29

Albritton, C. L.

Electric heating

Metal heating

By arc

36447408, B23K 2600

Patent

active

051515725

ABSTRACT:
A laser beam cuts a thin stencil template from a label. The label includes a layer or facestock of polyester which can withstand a harsh environment, and a protective topcoat of a polyester resin and a silicone particulate. The label has a releasable adhesive applied to its lower surface, the adhesive being covered with a backing strip which is coated to facilitate separation from the adhesive. The laser light beam is moved so the label and any exterior coating that may be on it is "cut" or vaporized to form a pattern. The laser light beam also removes the adhesive material in its path, while leaving the backing strip intact. Use of the stencil includes: removing the backing strip from the label; applying the label to a surface to be etched with the releasable adhesive holding the label where positioned; applying etching compound to the surface to be etched through the stencil; allowing the etching compound to set in the glass for a desired period of time; and removing the stencil; and wiping off any excess etching compound.

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Xerox copy of a two page list highlighting four titles including Brazil patent appln. 842484; Spain appln. 524229; Brazil appln. 851205 and Spain appln. 524632 (abstracts).
Copy of a 6 page brochure entitled LightWriter CO2 Laser Marking System by Lumonics Marking Corp.

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