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US 7,517,407 B2Granted
Cooling system and method for a paper coating device in a papermaking apparatus
AssigneeHansol Paper Co., Ltd.
InventorsKyung Tae Yun, Yong Ho Jun, Jong Kook Jung
Life of this patent
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Abstract
A cooling system and method for a paper coating device, especially for cooling a coating blade of the coating device and a coating color to be coated on paper web, whereby a streaking and/or bleeding phenomena caused by accumulation of the coating color at the end of the coating blade are effectively inhibited. The cooling system comprises a cooling means equipped at a back surface of the coating blade, interconnecting hoses for communicating coolant to the cooling means, a circulating unit, and a heat-exchanging unit.
Claims15
A paper coating device, comprising:
- a backing roll for continuously transferring paper web;
- a nozzle for injecting coating color to the paper web, the nozzle being disposed adjacent to a lower end of the backing roll;
- a coating blade for applying and metering the coating color onto the paper web in an evenly distributed manner;
- a profile tube configuring the profile of the coating blade;
- a means for cooling down the coating blade, the cooling means being installed to a void space between a reverse surface of the coating blade and the profile tube;
- and
- a coolant circulating system for forcibly circulating coolant through the cooling means,
- wherein the means for cooling consists of two pipes located at an upper part and a lower part of the reverse surface of the coating blade, respectively, and a plurality of spray nozzles installed on the pipes, the spray nozzles being spaced at regular intervals with each other, wherein the spray nozzles directly inject the coolant against the reverse surface of the coating blade.
5 more elements
A paper coating device, comprising:
- a backing roll for continuously transferring paper web;
- a nozzle for injecting coating color to the paper web, the nozzle being disposed adjacent to a lower end of the backing roll;
- a coating blade for applying and metering the coating color onto the paper web in an evenly distributed manner;
- a profile tube for configuring the profile of the coating blade;
- a cooling tool for cooling down the coating blade, the cooling tool installed to a void space between a reverse surface of the coating blade and the profile tube;
- interconnecting hoses provided at both ends of the cooling tool;
- a pump being in fluid communication with one of the interconnecting hose which is for introducing coolant into the cooling tool;
- a heat-exchanging unit installed between the pump and one of the interconnecting hoses which is for discharging coolant from the cooling tool;
- and
- a refrigerator indirectly heat-exchanging with the coolant at the heat-exchanging unit via refrigerant circulating therein.
7 more elements
Dependencies are inferred from the claim text.