Papermaker's Press Felt With Long Machine Direction Floats in Base Fabric
AssigneeHuyck Austria GmbH
InventorsHippolit Gstrein, Klaus Haiden
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Abstract
A papermaker's press felt includes: a base fabric comprising: a set of top machine direction (MD) yarns; a set of bottom MD yarns; and a set of cross machine direction (CMD) yarns interwoven with the top MD yarns and the bottom MD yarns. The top MD yarns, bottom MD yarns, and CMD yarns are interwoven in a series of repeat units in which each top MD yarn forms a long MD paper side float above certain consecutive ones of the set of CMD yarns. The press felt further comprises at least one batt layer attached to the base fabric. In this configuration, the long paper side floats of the base fabric can provide a desirable balance of properties.
Claims22
A papermaker's press felt, comprising:
- a base fabric, comprising:
- a set of top machine direction (MD) yarns;
- a set of bottom MD yarns;
- a set of cross machine direction (CMD) yarns interwoven with the top MD yarns and the bottom MD yarns;
- the top MD yarns, bottom MD yarns, and CMD yarns being interwoven in a series of repeat units in which each top MD yarn forms a long MD paper side float above certain consecutive ones of the set of CMD yarns, the long floats passing over eleven CMD yarns;
- the press felt further comprising at least one batt layer attached to the base fabric.
A papermaker's press felt, comprising:
- a base fabric, comprising:
- a set of top machine direction (MD) yarns;
- a set of bottom MD yarns;
- a set of intermediate MD yarns positioned below the top MD yarns and above the bottom MD yarns
- a set of cross machine direction (CMD) yarns interwoven with the top MD yarns and the bottom MD yarns;
- the top MD yarns, bottom MD yarns, and CMD yarns being interwoven in a series of repeat units in which each top MD yarn forms a long MD paper side float above certain consecutive ones of the set of CMD yarns, the long floats passing over eleven CMD yarns;
- the press felt further comprising at least one batt layer attached to the base fabric.
A papermaker's press felt, comprising;
- a base fabric, comprising:
- a set of top round machine direction (MD) yarns;
- a set of round intermediate MD yarns;
- a set of round bottom MD yarns;
- a set of upper cross machine direction (CMD) yarns interwoven with the top MD yarns and the intermediate MD yarns;
- and
- a set of lower CMD yarns interwoven with the intermediate MD yarns and the bottom MD yarns;
- the top MD yarns, intermediate MD yarns, bottom MD yarns, upper CMD yarns and lower CMD yarns being interwoven in a series of repeat units in which each top MD yarn forms a long MD paper side float above certain consecutive ones of the top CMD yarns;
- the press felt further comprising at least one batt layer needled to the base fabric;
- wherein the bottom MD yarns are not vertically stacked beneath the top MD yarns.
A papermaker's press felt, comprising:
- a base fabric, comprising:
- a set of round top machine direction (MD) yarns;
- a set of round bottom MD yarns;
- a set of cross machine direction (CMD) yarns interwoven with the top MD yarns and the bottom MD yarns;
- the top MD yarns, bottom MD yarns, and CMD yarns being interwoven in a series of repeat units in which each top MD yarn forms a long MD paper side float above certain consecutive ones of the set of CMD yarns;
- the press felt further comprising at least one batt layer needled to the base fabric;
- wherein the bottom MD yarns are not vertically stacked beneath the top MD yarns.
Dependencies are inferred from the claim text.