Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Reexamination Certificate
2000-01-18
2001-08-14
Simone, Timothy F. (Department: 1761)
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
C219S725000, C219S733000, C428S311110, C428S511000, C428S537500
Reexamination Certificate
active
06274229
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to disposable pads for absorbing cooking grease.
2. Description of the Prior Art
U.S. Pat. No. 5,814,396, the disclosure of which is incorporated herein by reference, describes an improved grease absorptive pad as being a disposable three layered absorptive pad for collecting and draining cooking grease. It is most effective in collecting grease produced during microwave oven cooking. The pad also may be used to drain grease from recently prepared fatty foods.
The top layer is made up of at least one ply of a grease absorptive sheet. The middle layer is a grease resistant sheet. Finally, the bottom layer is an anti-stick insulating sheet. The pad is dimensioned to cover a substantial portion of the bottom cooking area of a microwave oven. It may be of any convenient size when it is used to drain freshly cooked fatty foods.
The top layer of the disposable three layered pad is most often thicker than the middle and bottom layers. Also the top layer beneficially contains a plurality of plies which are readily assembled from cellulose fibers such as an absorptive paper. The middle layer desirably is formed from a high temperature stable, grease resistant plastic sheet such as high density polyethylene. The expression ‘high temperature’ means the temperature at which fatty foods are usually cooked. The bottom layer is a heat insulating sheet. Cellulose fibers of the type used to form the top layer may be used to form the bottom layer.
It has been found that in certain instances some foods tend to stick to these absorptive pads. While the portions of the pads stuck to the food was easily removed it would be an improvement if this occasional sticking could be eliminated. It is therefore an object of the invention to provide a grease absorptive pad that does not stick to food within which it is in contact. It is also an object of the invention to provide a grease pad of the type described which has on its surface a coating which contains an effective amount of an anti-stick agent.
SUMMARY OF THE INVENTION
The invention relates to improved disposable three layered pads for collecting cooking grease produced during the cooking of fatty foods particularly in the cooking area of a microwave oven as described in U.S. Pat. No. 5,814,396. These pads comprise (a) a top grease absorbing layer having at least one ply of a grease absorptive sheet; (b) a middle grease and high temperature resistant layer preferably constructed of plastic; and (c) a bottom layer composed of an anti-stick heat insulating sheet. The pad is dimensioned to cover a substantial portion of the bottom cooking area of a microwave oven when used in these devices. The top layer is from 2 to 50 times thicker than the middle and bottom layer. The improvement with which this invention is concerned comprises a small yet effective amount of anti-stick coating on the top layer of these three layered pads. These anti-stick coatings may be selected from materials in the following groupings: vegetable oils, animal fats and synthetic lubricants. Since the coatings will contact foods these coatings are further characterized as being described in EAFUS, which is an acronym for “Everything” Added to Food in the United States, a food additive data base published by the U.S. Food and Drug Administration.
The anti-stick coating preferably is a vegetable oil, desirably a blend of vegetable oils combined with a dimethylpolysiloxane polymer and/or lecithin. The coating also may be a synthetic polymer exemplified by silicone polymers, floroalkylene polymers and alkane polymers. Good results are obtained when the coatings are either a dimethypolysiloxane polymer or a polyethylene.
REFERENCES:
patent: 4930906 (1990-06-01), Hemphill
patent: 4950524 (1990-08-01), Hacker
patent: 5093176 (1992-03-01), Pribonic et al.
patent: 5814396 (1998-09-01), Weidner et al.
Miller John C.
Weidner Ron J.
Premo John G.
Simone Timothy F.
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