Claims
- 1. A paper cup of the type having a smooth, high gloss coating and being produced by the method comprising the steps of:
- (a) applying a substantially uniform coating of melted wax material to at least the outside surface of said container;
- (b) maintaining the temperature of said wax coating at a temperature above its melting point;
- (c) imparting a constant angular velocity to said container; and
- (d) applying a substantially uniform thin film of liquid coolant to said outside surface of said container, said coolant having a linear velocity substantially equal to said absolute surface velocity of said container and being applied substantially tangential to said outside surface.
- 2. A paper cup of the type having a smooth, high gloss coating and being produced by the method comprising the steps of:
- (a) heating said paper container and said wax coating to a temperature above the congealing temperature of said wax for a time sufficient to cause said wax to form a uniform liquid film on said outside surface;
- (b) imparting a constant angular velocity to said container;
- (c) maintaining the temperature of said wax coating at a temperature above its melting point; and
- (d) applying a substantially uniform thin film of liquid coolant to said outside surface of said container, said coolant having a linear velocity substantially equal to said absolute surface velocity of said container and being applied substantially tangential to said outside surface.
- 3. A paper cup of the type having a smooth, high gloss coating formed on he outside surface thereof comprising:
- (a) a paper substrate formed in a truncated cone configuration to thereby define an outside surface portion thereof;
- (b) a substantially uniform coating of wax material applied to said outside surface of said cup; and
- (c) a substantially uniform film of liquid coolant overlaying and contacting said uniform layer of wax material, said coolant covering a portion of said outside surface of said cup during the formation of said smooth, high gloss coating.
- 4. A flat paper web of the type having a smooth, high gloss coating and being produced by the method comprising the steps of:
- (a) advancing said flat paper web along a horizontal path while applying a substantially uniform coating of melted wax material to the top surface thereof;
- (b) maintaining the temperature of said melted wax above the congealing point of said wax material for a time sufficient to cause said wax material to form a uniform liquid film across the top surface of said flat paper web;
- (c) imparting a constant linear velocity to said coated surface of said flat paper web; and
- (d) applying a substantially uniform thin film of lqiuid coolant to said coated surface of said flat paper web, said coolant having a linear velocity substantially equal to said linear velocity of said flat paper web and being applied substantially tangential to said coated surface.
- 5. A flat paper web of the type having a smooth, high gloss coating formed on the top surface thereof comprising:
- (a) a flat paper substrate;
- (b) a substantially uniform coating of wax material applied to said outside surface of said flat paper web; and
- (c) a substantially uniform film of liquid coolant overlaying and contacting said uniform layer of wax material, said coolant covering a portion of said outside surface of said flat paper web during the formation of said smooth, high gloss coating.
RELATED APPLICATIONS
The present invention is a divisional of U.S. application Ser. No. 07/358,007, filed May 26, 1988 now U.S. Pat. No. 5,039,560 issued 08/13/91.
US Referenced Citations (5)
Divisions (1)
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Number |
Date |
Country |
Parent |
358007 |
May 1989 |
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