US 5,350,904 A · Susceptors having disrupted regions for differential heating in a microwave oven

Abstract

A packaging system is disclosed which includes a susceptor heating means having selective responsiveness to microwave radiation. The susceptor surface has a plurality of regions, where at least one region has an altered responsiveness to microwave radiation which is achieved by disruptions in the susceptor surface. A method for making regions of a susceptor selectively responsive to microwave heating by disrupting the continuity of the metallized film of the susceptor is also disclosed.

Claims2

Dependent claims

A microwave heatable sheet for cooking food stuff comprising:

(a) a base layer;
(b) a microwave receptor material layer which is attached to and extends over an area of said base layer and which heats up in the presence of microwave energy, said microwave receptor material layer having at least one selected mechanically embossed region in said area which is formed into small pieces to reduce the heating characteristic such that the base layer remains structurally intact, said at least one selected region defining a subarea less than said area and having a different heating characteristic in comparison with the remainder of said area.

Dependencies are inferred from the claim text.

Facts

Application

07/874,107Filed 20 Jul 1992 · continuation

Priority

23 May 1988

Granted

27 Sep 1994

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

B65D 81/3446
For packaging foodstuffs or other articles intended to be cooked or heated within the package: specially adapted to be heated by microwaves
B65D 2581/344
Means for affecting the heating or cooking properties: geometry or shape factors influencing the microwave heating properties
B65D 2581/3466
Means for applying microwave reactive material to the package: microwave reactive material applied by vacuum, sputter or vapor deposition
B65D 2581/3467
Means for applying microwave reactive material to the package: microwave reactive layer shaped by delamination, demetallizing or embossing

Susceptors having disrupted regions for differential heating in a microwave oven

Life of this patent

Susceptors having disrupted regions for differential heating in a microwave oven

Life of this patent

Abstract

Claims2