Method of making positive-temperature-coefficient thermistor hea

Details Method of making positive-temperature-coefficient thermistor hea Method of making positive-temperature-coefficient thermistor hea

1992-04-14

1994-07-05

Aftergut, Jeff H.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156292, 219505, 338 22R, B32R 714, H01C 702, H05B 102

Patent

active

053264185

ABSTRACT:
Method of making positive-temperature-coefficient thermistor (PTCR) heating element involves steps of depositing an insulation adhesive layer having a predetermined pattern on flat surfaces of two heat-radiating means opposite to each other, placing a metal film having a pattern complementary to that of the insulation adhesive layer on uncoated area of flat surface of each of the two heat-radiating means, arranging in sequence a plurality of PTCR pieces on flat surfaces of heat-radiating means, stacking two processed heat-radiating means, with their flat surfaces facing PTCR pieces, applying compressive pressure to the stacked heat-radiating means with PTCR pieces sandwiched therebetween, and allowing insulation adhesive layer to cure under the compressive pressure so that all components are held together intimately and firmly to form a heating element which is cost effective, relatively safe, highly conductive and capable of generating a high and stable thermal output.

REFERENCES:
patent: 4414052 (1983-11-01), Habata et al.
patent: 4626309 (1986-12-01), Mullen
patent: 4931626 (1990-06-01), Shikama
patent: 4963716 (1990-10-01), Van Den Elst
patent: 5057672 (1991-10-01), Bohlender
patent: 5077889 (1992-01-01), Matsuda
patent: 5192853 (1993-03-01), Yeh
patent: 5198640 (1993-03-01), Yang
patent: 5256857 (1993-10-01), Curhan
patent: 5270521 (1993-12-01), Shikama

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