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US 4,482,601 AGranted
Wet press papermakers felt and method of fabrication
AssigneeAlbany International Corp.
InventorRichard J. Hartigan, Jr.
Life of this patent
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Abstract
The disclosure is of a method of preparing a papermakers wet press felt fabric, felts made therefrom and their use, as wet press felts on papermaking machines. By the method of the invention, there is obtained a method of making a papermaker's press felt harder and denser while at the same time maintaining a high level of void volume and permeability in a loaded nip of a paper machine press.
Claims2
An intermediate wet-press felt fabric, which comprises:
- a first layer of interwoven machine direction and cross-machine direction yarns;
- and
- a second layer of non-woven staple fibers, needled to the first layer;
- said staple fibers including a proportion of solvent removable fibers and a proportion of solvent resistant fibers.
1 more element
A method of manufacturing a wet press papermakers felt fabric, which comprises:
- providing textile components of a wet press fabric;
- providing a solvent removable material, which is compatible with the textile components in a fabric structure, and which is a granular or particulate form of a chemical compound;
- assembling the textile components and the solvent removable material into the form of a wet press fabric wherein the solvent removable material is mixed and homogeneously disbursed in the textile components;
- compacting the formed fabric to increase the overall density of the fabric;
- and
- dissolving the solvent removable material;
- whereby voids are formed in the fabric where the solvent removable material is dissolved.
4 more elements
Dependencies are inferred from the claim text.