Papermakers' press felt with base fabric that does not require s

Details Papermakers' press felt with base fabric that does not require s Papermakers' press felt with base fabric that does not require s

1991-06-19

1992-05-05

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

139383AA, 428222, 428223, 428280, 428300, B32B 502

Patent

active

051106728

ABSTRACT:
An improved papermakers' press felt and a method to make such an improved press felt, for use in papermaking, cellulose and similar machines, including a base fabric assembly joined without seaming. In one embodiment, the ends of the base fabric are joined to create an endless fabric by a needling operation that also entangles the batt into the base fabric. The ends to be joined to the flat-woven base fabric are preferably cut on a diagonal. To produce this fabric, a flat-woven base fabric is cut to the proper dimensions for a press felt and rolled into two continuous loops, one inside the other, to form the base fabric assembly. Alternatively, two flat-woven base fabrics of the appropriate size for a press felt are used. Each fabric is rolled once to form a loop and the two loops are assembled, one within the other, to form the base fabric assembly. In a second embodiment, the base fabric is joined prior to needling by a pintle cable inserted through loops formed when a void is formed in the fabric to accommodate the pintle cable.

REFERENCES:
patent: 4755260 (1988-07-01), Sakuma
patent: 4863786 (1989-09-01), Green et al.
patent: 4939025 (1990-07-01), Nicholas et al.
patent: 5041332 (1991-08-01), Lasinsky

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