Coating processes – With stretching or tensioning – Running lengths
Patent
1985-09-05
1987-02-17
Lawrence, Evan K.
Coating processes
With stretching or tensioning
Running lengths
156137, 427210, 427278, B05D 302, B05D 312, B05D 500
Patent
active
046439161
ABSTRACT:
A method for manufacturing a pressure belt for use with an extended nip press in a paper making machine. The belt is characterized by a base fabric formed of a synthetic fiber filament, and formed with a synthetic resin layer on each outer and inner peripheral side thereof. The outer peripheral side which becomes in contact with the felt is provided with a number of drain channels. In the method of manufacturing, a base fabric in the form of an endless belt is trained around a heating cylinder, guide rolls and stretching rolls. The outer peripheral surface of the base fabric is coated with a curable synthetic resin as the fabric is moved. The layer of synthetic resin is semi-cured by heating means including the heating cylinder. This process of coating and semi-curing is repeated until desired thickness of the resin layer is obtained. Drain channels are then formed in the semi-cured resin by an embossed roll whereupon the resin layer is cured and then ground to provide a desired thickness. The inner surface of the belt is then coated with resin in a similar manner to the coating of the exterior surface followed by curing and grinding to provide a uniform thickness to the finished pressure belt. Such a construction is advantageous, for example, in improving the travelling stability of the belt and the dewatering efficiency with a web of paper.
REFERENCES:
patent: 4224372 (1980-09-01), Romanski
patent: 4446187 (1984-05-01), Eklund
Ichikawa Woolen Textile Co., Ltd.
Lawrence Evan K.
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