Method for applying microwave shield to cover of microwavable food container
First Claim
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1. A method for providing a microwave-shield to a microwavable food tray having different foods therein requiring different degrees of microwave irradiation, the method comprising the steps of:
- (a) providing a microwavable food tray containing at least one low-absorbing and at least one high-absorbing food component, said low-absorbing food component requiring a greater degree of microwave irradiation to be heated to a desired temperature at the end of a microwave cooking cycle than said high-absorbing food component, said food tray comprising a cover member thereover to cover said foods in said food tray; and
(b) adhering a microwave shield to said cover member of said food tray, said microwave shield being applied to said cover member substantially in register with said high-absorbing food component, said microwave shield being provided with a shape substantially corresponding to the shape of said high-absorbing food component, wherein said microwave shield is effective to divert a portion of incident microwave radiation away from said high-absorbing food component during a microwave cooking cycle.
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Abstract
A method for providing a microwave-shield on the cover member of a microwavable food tray having different foods therein requiring different degrees of microwave irradiation is provided. The method includes providing an adhesive label directly to a cover member of the food tray in register with one of the food products in the tray. The cover member is provided on the food tray from a sheet of cover material having a plurality of microwave shields pre-applied thereto at discrete intervals.
30 Citations
27 Claims
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1. A method for providing a microwave-shield to a microwavable food tray having different foods therein requiring different degrees of microwave irradiation, the method comprising the steps of:
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(a) providing a microwavable food tray containing at least one low-absorbing and at least one high-absorbing food component, said low-absorbing food component requiring a greater degree of microwave irradiation to be heated to a desired temperature at the end of a microwave cooking cycle than said high-absorbing food component, said food tray comprising a cover member thereover to cover said foods in said food tray; and
(b) adhering a microwave shield to said cover member of said food tray, said microwave shield being applied to said cover member substantially in register with said high-absorbing food component, said microwave shield being provided with a shape substantially corresponding to the shape of said high-absorbing food component, wherein said microwave shield is effective to divert a portion of incident microwave radiation away from said high-absorbing food component during a microwave cooking cycle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for providing a cover member having a microwave-shield to microwavable food trays having different foods requiring different degrees of microwave irradiation, the method comprising the steps of:
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(a) providing microwavable food trays having at least one low-absorbing and at least one high-absorbing food component, said low absorbing food component requiring a greater degree of microwave irradiation to be heated to a desired temperature at the end of a microwave cooking cycle than said high-absorbing food component;
(b) providing a sheet of food tray cover material, said sheet having a plurality of microwave shields applied thereto and indexed at discrete intervals along the length thereof; and
(c) delivering said food trays successively to a cover applicator machine in a microwavable food packaging process, said cover applicator machine drawing cover material from said sheet and applying therefrom a cover member having a microwave shield to each food tray, wherein the indexing interval facilitates application of a cover member to each food tray in said packaging process such that each said microwave shield is applied substantially in register with a food component in each said tray. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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Specification