Paper machine forming fabric with controlled porosity

Details Paper machine forming fabric with controlled porosity Paper machine forming fabric with controlled porosity

1991-10-16

1992-12-08

Bell, James J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including interlaminar mechanical fastener

139383A, 162348, 428229, 428255, 428257, 428258, D03D 300

Patent

active

051697092

ABSTRACT:
A multi-layer paper machine fabric having a preselected permeability value and an increased weft wise stiffness including a single system of warp threads and multiple layers of weft threads including at least support surface weft threads, intermediate layer weft threads and lower surface weft threads interwoven with the warp threads. The surface layer weft threads are arranged to have at least a first thickness and the intermediate layer and lower surface weft threads are arranged to have a second and equal thickness greater than the first thickness of the surface layer weft threads. The second thickness is selected relative to the first thickness to achieve the preselected permeability value and the preselected weft wise stiffness value of the paper machine fabric. Alternate ones of the support layer weft threads are arranged in vertically stacked rows with the intermediate and lower layer weft threads and intermediate ones of the support layer weft threads are arranged between the vertical rows.

REFERENCES:
patent: 4640741 (1987-02-01), Tsuneo
patent: 4909284 (1990-03-01), Hositzke
patent: 5056565 (1991-10-01), Kufferath

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