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US 7,989,368 B2Granted
Polymer particles mixed with fibers and products such as press fabrics made therefrom
AssigneeVoith Patent GmbH
InventorsSanjay Patel, Robert Crook
Life of this patent
Estimating the term…
Abstract
A mixture contains polymer particles along with solids or fibers that can be utilized in press felts (or fabrics) for the press section of a papermaking machine and a method of making the mixtures are described.
Claims10
A press felt comprising a base fabric, one or more batt layers being securely attached to a paper facing side of the base fabric, and an essentially continuous polymer coating,
- the essentially continuous polymer coating comprising a polymer, embedded chopped fibers configured to control porosity of the press felt, and pores positioned around the chopped fibers inside the essentially continuous polymer coating,
- wherein the essentially continuous polymer coating has been formed by applying a suspension comprising polymer particles and the chopped fibers to a surface of the base fabric, and then heating the polymer particles and chopped fibers.
Dependencies are inferred from the claim text.