Method and apparatus for treating heat-sensitive products

Details Method and apparatus for treating heat-sensitive products Method and apparatus for treating heat-sensitive products

1978-07-31

1980-06-17

Grimley, Arthur T.

Electric heating

Metal heating

Of cylinders

219 1055A, 426241, H05B 906

Patent

active

RE0303100

ABSTRACT:
Each unit of a heat-sensitive product is contacted directly or indirectly with a cooling medium so that the unit acquires a condition in which a surface layer thereof has a lower temperature than its inner portions. The product unit is then heated, by electromagnetic energy of at least microwave frequency, from this condition to substantially the desired sterilizing or pasteurizing temperature in a medium having a temperature which will permit such heating. In this way, a substantially uniform heat treatment effect is obtained in the product units.

REFERENCES:
patent: 2485659 (1949-10-01), Robertson
patent: 2838640 (1958-06-01), Mann et al.
patent: 3092503 (1963-06-01), Gray
patent: 3256101 (1966-06-01), Arns
patent: 3335253 (1967-08-01), Jeppson et al.
patent: 3409447 (1968-11-01), Jeppson
patent: 3470942 (1969-10-01), Fukada et al.
patent: 3494723 (1970-02-01), Gray
patent: 3494724 (1970-02-01), Gray
patent: 3536129 (1970-10-01), White
patent: 3556817 (1971-01-01), Jeppson

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