Reflective temperature compensating microwave susceptors

Details Reflective temperature compensating microwave susceptors Reflective temperature compensating microwave susceptors

1990-02-14

1991-05-28

Leung, Philip H.

Electric heating

Metal heating

Of cylinders

219 1055E, 426107, 426234, 426243, 99DIG14, H05B 680

Patent

active

050196812

ABSTRACT:
A reflective temperature compensating microwave susceptor is disclosed. The susceptor has a microwave interactive heating layer which may be characterized in various ways. In one aspect, the microwave interactive heating layer is operable to provide an increase in reflectance by several factors during heating from 23.degree. C. to 250.degree. C. The microwave interactive heating layer may have a surface resistance that decreases significantly from 23.degree. C. to 250.degree. C. In another aspect, the microwave interactive heating layer may have an electrical conductivity which increases significantly from 23.degree. to 250.degree. C. The microwave interactive heating layer is preferably formed as a thin film deposited upon a substrate, preferably a sheet of polyester. The coated polyester is adhesively bonded to a support member. The microwave interactive heating layer preferably comprises TiO.sub.x, where x has a value between two and one. Most preferably, the microwave interactive heating layer predominantly comprises Ti.sub.2 O.sub.3.

REFERENCES:
patent: 2856497 (1958-10-01), Rudenberg
patent: 3941967 (1976-03-01), Sumi et al.
patent: 4190757 (1980-02-01), Turpin et al.
patent: 4266108 (1981-05-01), Anderson et al.
patent: 4808780 (1989-02-01), Seaborne
patent: 4927991 (1990-05-01), Wendt et al.

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