Cooling system and method for a paper coating device in a papermaking apparatus
AssigneeHansol Paper Co., Ltd.
InventorsKyung Yun, Yong Jun, Jong 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.
Claims16
A paper coating device, comprising:
- a baking 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 cooling 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.
A paper coating device, comprising:
- a baking 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 the 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 hose 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.
A cooling method for a coating blade of a paper coating device, comprising steps of:
- mounting a cooling means on a reverse surface of the coating blade;
- and
- circulating coolant having temperature of −15° C.˜25° C. through the cooling means so as to cool down the coating blade.
Dependencies are inferred from the claim text.