Method of making high output strain gage

Details Method of making high output strain gage Method of making high output strain gage

1992-10-28

1994-07-12

Dang, Thi

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156632, 156634, 156652, 156656, 1566591, 156664, 296211, C23F 100, G01L 100

Patent

active

053285514

ABSTRACT:
A method of making a foil-type electrical resistance strain gage having a gage factor of at least 4. A PtW foil is adhesively bonded to a polyimide substrate with an FEP adhesive cured under heat and pressure. The foil is spin-coated with a positive photoresist, masked, and exposed to ultraviolet light. The exposed photoresist is then developed, permitting wet etching of the foil to form a gage pattern on the substrate, which is then preferably cured.

REFERENCES:
patent: 2715666 (1955-08-01), Stinchfield
patent: 2933665 (1960-04-01), Dimeff
patent: 3922628 (1975-11-01), Hudson et al.
patent: 5049232 (1991-09-01), Tola
patent: 5193402 (1993-03-01), Reed

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