Heat treatment of heat-sensitive products

Details Heat treatment of heat-sensitive products Heat treatment of heat-sensitive products

1978-07-31

1981-10-20

Reynolds, B. A.

Electric heating

Metal heating

Of cylinders

219 1055A, 219 1055R, 426237, 422 21, H05B 678

Patent

active

RE0307807

ABSTRACT:
Separate units of a heat-sensitive product are each pre-treated by heating at least the main part of the unit to a pre-heating temperature of at least 50.degree. C., a cooling medium being brought into direct or indirect contact with the unit so that its surface layer is prevented from acquiring a substantially higher preheating temperature than its inner parts; and each product unit is then heated to substantially sterilizing or pasteurizing temperature by electro-magnetic energy of at least microwave frequency.

REFERENCES:
patent: 2485659 (1949-10-01), Robertson
patent: 2510796 (1950-06-01), Brown
patent: 2838640 (1958-06-01), Mann et al.
patent: 3092503 (1963-06-01), Gray
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 (1974-02-01), Gray
patent: 3536129 (1970-10-01), White
patent: 3556817 (1971-01-01), Jeppson
patent: 3619126 (1971-11-01), Carvallo
patent: 3712823 (1973-01-01), Ueno

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