Extended nip press blanket

Details Extended nip press blanket Extended nip press blanket

1995-11-27

1998-06-16

Hastings, Karen M.

Paper making and fiber liberation

Apparatus

Running or indefinite length product forming and/or treating...

162901, 198847, 264347, D21F 302

Patent

active

057664218

ABSTRACT:
A press blanket in a pressing device intended for extracting water from a web in the press nip of a papermaking machine comprises an elastomeric matrix, in which the outer area, facing the web, is subjected to a thermal treatment in order to increase the wear-resistance. Although the elastomeric matrix thus consists of the same material throughout, the outer area, which is subjected to greater stresses, therefore exhibits increased wear-resistance. The press blanket is made in a single operation, by casting a hot-casting elastomeric matrix onto a cylindrical casting mold, while at the same time reinforcing threads are wound into the material. The press blanket is selectively thermally treated in order to achieve increased wear-resistance at the outer surface facing the web to a depth below the depth of grooves or bores on this outer surface.

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patent: 5118391 (1992-06-01), Matuschczyk et al.
patent: 5134010 (1992-07-01), Schiel
patent: 5390011 (1995-02-01), Theodoulou

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