Papermaker's grooved back felt
AssigneeHuyck Corporation
InventorFrederick R. Smart
Life of this patent
Estimating the term…
Abstract
A papermaking felt having interwoven warp and filling yarns on its face side and bulky rib forming yarns on its machine side, the rib forming yarns lying in spaced apart relation to define water conveying channels therebetween, there being a batt surface on the face side of the fabric needled through the warp and filling yarns and into the rib forming yarns, the rib forming yarns being heat fused following needling to render them essentially incompressible, the rib forming yarns being initially attached to the warp yarns by holding yarns which may be removed prior to the heat fusing or retained as a permanent part of the felt.
Claims11
A papermaking fabric having a face side and a machine side, said fabric comprising interwoven warp and filling yarns on the face side of the fabric, bulky rib forming yarns on the machine side of the fabric, said rib forming yarns which comprise a mixture of staple or multifilament fibers with relatively low and relatively high melting points extending in parallel relation and lying in spaced apart relation relative to each other to define channels therebetween, a batt surface on the face side of said fabric needled through said warp and filling yarns and into said rib forming yarns, with the channels therebetween being essentially free of batt fibers, said rib forming yarns being heat fused to render them essentially incompressible in use.
Dependencies are inferred from the claim text.