Papermaking fabric seam with additional threads in the seam area
AssigneeAstenJohnson, Inc.
InventorSamuel H. Herring
Life of this patent
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Abstract
An open ended papermaker's fabric of a type woven from a longitudinal thread system and a transverse thread system wherein a plurality of seam loops are formed at each end of the fabric by the threads of the longitudinal thread system. A seam zone exists at each end of the fabric between the respective seam loops and the last thread of the transverse thread system. Two additional transverse threads are interwoven with the longitudinal thread system in at least one seam zone in complementary weave repeat patterns that combine to provide a paper side repeated pattern of over one, under one across the repeat.
Claims8
An open ended papermaker's fabric of a type woven from a longitudinal thread system and a transverse thread system and having a paper side and a machine side, a plurality of seam loops at each end of the fabric formed by the threads of the longitudinal thread system whereby a seam zone is formed at each end of said fabric between the respective seam loops and a respective end thread of said transverse thread system, the fabric characterized by:
- two additional transverse threads interwoven with the longitudinal thread system in at least one seam zone, the two additional threads woven in complementary weave repeat patterns that combine to provide a paper side repeated pattern of over one, under one across the repeat, and the longitudinal thread system being arranged in stacked longitudinal thread pairs, with one of the two additional transverse threads interwoven between each of the longitudinal thread pairs in the at least one seam zone.
A method of producing a papermaker's fabric comprising the steps of:
- interweaving a longitudinal thread system with a transverse thread system to define a base fabric having first and second ends and a paper side and a machine side;
- forming a plurality of seam loops at each end of the fabric from the threads of the longitudinal thread system and defining a seam zone at each end of said fabric between the respective seam loops and a respective end thread of said transverse thread system;
- and
- interweaving two additional transverse threads in at least one seam zone with the longitudinal thread system with the two additional threads woven in complementary weave repeat patterns that combine a paper side repeated pattern of over one, under one across the repeat, the longitudinal thread system being arranged in stacked longitudinal thread pairs, with one of the two additional transverse threads interweaving between each of the longitudinal thread pairs in the at least one seam zone.
Dependencies are inferred from the claim text.