Adhesive system for reducing the likelihood of particulate

Details Adhesive system for reducing the likelihood of particulate Adhesive system for reducing the likelihood of particulate

1993-04-01

1994-07-26

Thomas, Alexander S.

Stock material or miscellaneous articles

Display in frame or transparent casing; or diorama including...

Peripheral enclosure or frame

355122, B32B 308

Patent

active

053326040

ABSTRACT:
A system for reducing the generation of particulate in the use of an optical pellicle is disclosed. The system is designed for use with a pellicle having a pellicle membrane with an underside and an upper side, and a pellicle frame having inner, outer, top and bottom sides. The underside of the pellicle membrane is tensed over and bonded to the top of the pellicle frame. A first adhesive layer coating is applied to the inner side of the pellicle frame and extends continuously over the top of the pellicle frame. This reduces the likelihood of a generation of particulate as a result of improper formation of the adhesive layer, or as a result of degradation of the adhesive layer over time. It is normal that this first adhesive layer cover substantially all of the inner and outer surfaces of the pellicle frame. In one embodiment of the present invention, the first adhesive layer also extends continuously across the underside of the pellicle membrane.

REFERENCES:
patent: 3500129 (1970-03-01), Jowitt
patent: 3615006 (1971-10-01), Freed
patent: 3645281 (1972-02-01), Seidler
patent: 3765941 (1973-10-01), Gordon
patent: 4252846 (1981-02-01), Romesberg et al.
patent: 4343964 (1982-08-01), Wootton
patent: 4470508 (1984-09-01), Yen

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