Spray coating method and apparatus
First Claim
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1. A method of coating a food product, the method comprising;
- spraying a coating substance at the product so as to coat at least a first surface of the product; and
electrostatically charging the overspray, wherein the charged coating substance can be attracted back towards the product to coat a further surface or surfaces thereof.
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Abstract
A method of coating a food product, the method comprising spraying a coating substance at the product whilst the product is falling under gravity, so as to coat at least a first surface of the product. The overspray is electrostatically charged using a needle electrode, wherein the charged coating substance can be attracted back towards the product after the product has landed on a grounded exit conveyor so as to coat a further surface or surfaces thereof.
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Citations
15 Claims
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1. A method of coating a food product, the method comprising;
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spraying a coating substance at the product so as to coat at least a first surface of the product; and
electrostatically charging the overspray, wherein the charged coating substance can be attracted back towards the product to coat a further surface or surfaces thereof. - View Dependent Claims (2, 3, 4, 5, 6, 8, 10, 12)
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7. Apparatus for coating a food product with a coating substance, the apparatus comprising:
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spray means for spraying the food product with the coating substance;
charging means for electrostatically charging the overspray; and
means for coupling the product to a fixed potential, whereby the charged coating substance is attracted towards the product. - View Dependent Claims (9, 11, 13, 14, 15)
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Specification