Construction for an extended nip press belt

Details Construction for an extended nip press belt Construction for an extended nip press belt

1989-09-28

1990-08-07

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

428167, 428172, 428245, 428247, 428252, 428289, 428332, 428359, 428361, 428375, 156137, 156140, 162358, B32B 328, F16G 100

Patent

active

049467310

ABSTRACT:
A belt for use on an extended nip press for dewatering a fibrous web is shown. The belt includes a base fabric having machine-direction and cross-machine direction yarns and takes the form of an endless loop. At least one of the machine-direction and cross-machine direction yarns is a spun yarns of staple fibers. The base fabric is completely coated and impregnated with a polymeric resin, such as polyurethane, to render it impervious to liquids, especially lubricating oil. The inner surface of the resulting belt slides over the arcuate pressure shoe component of the extended nip press during its operation. The outer surface of the belt is provided with grooves separated by land areas which together define channels for water pressed from the fibrous web in the press nip. The land areas are anchored to the belt by means of staple fibers from the spun yarns embedded in the coating and are not susceptible to delamination.

REFERENCES:
patent: 3656360 (1972-04-01), Fix
patent: 4559258 (1985-12-01), Kiuchi
patent: 4643916 (1987-02-01), Kiuchi

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