Industrial fabrics
AssigneeScapa-Porritt Limited
InventorsBryan J. Gisbourne, Paul F. Myerscough
Life of this patent
Estimating the term…
Abstract
An industrial fabric, and particularly a papermakers dryer fabric, is proposed wherein the permeability thereof is reduced by the inclusion of a continuous layer of an elastomeric open-cell foam therein which extends to and is contiguous with at least one surface of the base structure, the base structure comprising a link belt or a woven or knitted fabric.
Claims23
A method of reducing the permeability of a paper machine dryer fabric in whole or in part comprising the steps of introducing liquid foam or foam forming material into the fabric, and effecting setting or curing of such material, so as to form a continuous layer of flexible open cell elastomeric foam within the fabric, the foam existing wholly within the fabric and one face, at least, thereof being arranged to be contiguous or substantially contiguous with a corresponding surface of the fabric.
A papermakers dryer fabric having a continuous layer of flexible, open cell elastomeric foam therein, the layer existing wholly within the fabric and having one face, at least, thereof contiguous or substantially contiguous with a surface of the fabric.
A link belt fabric comprising a multiplicity of helical coils arranged in interdigitated side-by-side disposition and hinge pins hingedly connecting adjacent coils, characterised by a continuous layer of open cell elastomeric foam disposed within the fabric, the said layer extending into substantially contiguous relationship with the surface of the fabric at one face at least thereof.
A papermakers dryer fabric comprising an assembly of helical coils joined together in interdigitated side-by-side relationship and further including a layer of open-cell elastomeric foam material disposed wholly within the fabric, the said layer extending into substantially contiguous relationship with the surface of the fabric at one face, at least, thereof.
A paper machine dryer fabric of woven construction having top and bottom surfaces thereto, including a layer of open cell elastomeric foam therein, the said layer being disposed wholly within the fabric between the top and bottom surfaces thereof and being substantially contiguous with one at least of the said surfaces, the foam having a bubble size within the range of 0.05 to 0.50 mm.
Dependencies are inferred from the claim text.