Method to treat materials by microwave

Details Method to treat materials by microwave Method to treat materials by microwave

1995-06-07

1997-03-11

Mackey, James P.

Plastic article or earthenware shaping or treating: apparatus

Means applying electrical or wave energy directly to work

Electro-static or inductive field

264489, 4251748R, B29C 3508, H05B 680

Patent

active

056098910

ABSTRACT:
A device for microwave treatment of materials includes a mold (1) used to hold the material (3) to be treated and a microwave generator which is used to apply to the mold (1) the microwave energy necessary for treatment of the material. The mold includes at least two dielectric materials (4,5,6,7) surrounding the material (3) to be treated. The dielectric materials have dielectric permittivities which differ so that the attenuation of one elementary segment of length l located between the points of side z(n-1) and zn of the longitudinal dimension of the material (3) to be treated which includes at least one section broken up into segments of length l, is controlled by the relationship: ##EQU1## in which: .alpha. is the attenuation in the elementary segment in question,

REFERENCES:
patent: 4298324 (1981-11-01), Soulier
patent: 4617439 (1986-10-01), Lespinats et al.
patent: 4963709 (1990-10-01), Kimrey, Jr.
patent: 5032327 (1991-07-01), Becheret

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