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US 5,806,569 AGranted
Multiplanar single layer forming fabric
AssigneeAsten, Inc.
InventorsThomas Gulya, Samuel H. Herring, Walter P. Wright
Life of this patent
Estimating the term…
Abstract
A papermaking forming fabric having a single layer of machine direction filaments interwoven with smaller and larger diameter cross direction filaments, the larger diameter filaments forming a wear surface on the machine side of the fabric.
Claims17
A single-layer papermaking fabric having a sheet side and a machine side is comprised of:
- a system of MD filaments selectively interwoven with a system of CD filaments comprised of alternating smaller and larger diameter filaments that define at least two subsets of filaments, the MD filaments are in a pattern that defines sheet side floats of at least four CD filaments, the larger diameter CD filaments are in a pattern that defines machine side floats of at least four MD filaments, and the smaller diameter CD filaments are in a pattern that defines sheet side floats over at least two MD filaments such that the sheet side has a non-planar sheet supporting surface dominated by the MD filaments, the machine side running surface is dominated by the larger CD filament floats and the smaller CD filaments are not dominant in either the supporting or running surface.
A single-layer papermaker's forming fabric having a sheet side and a machine side is comprised of:
- a system of MD filaments selectively interwoven with a system of CD filaments comprised of alternating smaller and larger diameter filaments that define at least two subsets of filaments, the MD filaments are in a pattern that defines sheet side floats of at least four CD filaments, the larger diameter CD filaments are in a pattern that defines machine side floats of at least four MD filaments, and the smaller diameter CD filaments are in a pattern that defines sheet side floats over at least two MD filaments such that the sheet side has a non-planar sheet supporting surface dominated by the MD filaments, the machine side running surface is dominated by the larger CD filament floats and the smaller CD filaments are not dominant in either the supporting or running surface.
A process of making a paper sheet comprising steps of:
- providing papermaking equipment;
- providing a multiplanar single-layer papermaker's forming fabric on the papermaking equipment, the papermaker's forming fabric having sheet and machine sides, the fabric further comprised of a system of MD filaments selectively interwoven with a system of CD filaments comprised of alternating smaller and larger diameter filaments that define at least two subsets of filaments, the MD filaments are in a pattern that defines sheet side floats of at least four CD filaments, the larger diameter CD filaments are in a pattern that defines machine side floats of at least four MD filaments, and the smaller diameter CD filaments are in a pattern that defines sheet side floats over at least two MD filaments such that the sheet side has a non-planar sheet supporting surface dominated by the MD filaments, the machine side running surface is dominated by the larger CD filament floats and the smaller CD filaments are not dominant in either the supporting or running surface;
- providing a partially dewatered paper web to the sheet side of the fabric;
- and
- providing means for impressing the paper web against the fabric.
2 more elements
Dependencies are inferred from the claim text.