Composite material for a microwave heating container and container formed therefrom
AssigneeCampbell Soup Company
InventorFrederick E. Simon
Life of this patent
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Abstract
A composite material for efficient use in a microwave heating container and a container formed therefrom are described. The composite material includes a thermoplastic resin and a particulate dielectric material oriented therein so the container exhibits a dielectric constant within the range from about 5 to about 8 which is particularly useful for heating high moisture foods in microwave ovens. The particulate dielectric material includes particles having a dielectric constant within a range from about 5 to about 8 and a particle size within the range from about 1 .mu.m to about 10 .mu.m.
Claims14
A composite material for use in the construction of a microwave heating container, the composite material comprising a plastic resin and a particulate dielectric material oriented therein, said particulate dielectric material having a dielectric constant within a range of about 5 to about 8, a loss tangent value of less than 8.times.10.sup.-4, and a particle size of 1 .mu.m to about 10 .mu.m in a quantity sufficient to produce a dielectric constant of about 5 to about 8 for said composite.
A microwave heating container exhibiting a shape having a contact area ratio of at least about 50% when containing liquids and being made of a composite material comprising a plastic resin and a particulate dielectric material oriented therein whereby said container exhibits a dielectric constant within the range from about 5 to about 8, said particulate dielectric material comprising particles having a dielectric constant within a range of about 5 to about 8, a loss tangent value of less than about 8.times.10.sup.-4, and a particle size of about 1 .mu.m to about 10 .mu.m in a quantity sufficient to produce a dielectric constant of about 5 to about 8 for said container.
Dependencies are inferred from the claim text.