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.

Abstract: An open ended papermaker's fabric woven from longitudinal and transverse thread systems and including a plurality of seam loops at each end. Two additional transverse threads are interwoven with the longitudinal thread system in the seam zone. The crossover points of the two additional transverse threads occur at a transition between paired paper and machine side threads of the longitudinal thread system which are separated in the transverse direction by at least three top layer longitudinal threads.

Abstract: A “triple layer” fabric having upper and lower systems of interwoven yarns interconnected into an integral fabric by a system of stitching yarns. Preferably, the fabric is a forming fabric having upper and lower layers of uniformly sized machine direction (MD) yarns. Upper and lower layer cross machine direction (CMD) yarns weave, respectively, with the upper and lower MD yarns to define the upper and lower yarn systems. The lower layer CMD yarns are preferably larger in diameter than the MD yarns. The lower layer CMD yarns weave in a repeat pattern with respect to the lower layer MD yarns such that the lower layer CMD yarns weave in a repeat defined by floats under groups of at least three lower MD yarns and over pairs of adjacent lower MD yarns. Each lower layer MD yarn is in at least two different pairs relative to at least two different lower layer CMD yarns within the repeat which maintains a substantial degree of stacking of the lower layer MD yarns below respective upper layer MD yarns.

Abstract: An open ended papermaking fabric comprised of interwoven longitudinal and transverse thread systems which define a paper side, a machine side and a plurality of seaming loops at each open end of the fabric. The seaming loops are formed by the longitudinal thread system and the transverse threads define a seaming zone at each end. The fabric is characterized by at least one additional transverse thread interwoven with the longitudinal threads in the seam zone in a repeat pattern that includes a mid-plane float of at least two threads in the longitudinal yarn system.

Abstract: An open ended papermaker's fabric of the type woven from longitudinal and transverse thread systems including a plurality of seam loops at each end of the fabric. A seam zone exists at each end of the fabric between the respective seam loops and the last thread of the transverse thread system. At least one additional transverse thread is interwoven in at least one seam zone in a repeat pattern having a ratio of interlacings with longitudinal machine side threads to paper side longitudinal threads greater than zero and less than or equal to 1 in 6.

Abstract: An open-ended papermaker's fabric of a type woven from a longitudinal thread system and a transverse thread system and including a plurality of seam loops at each end of the fabric. A seam zone exists at each end of the fabric between the respective seam loops and the last thread of the transverse thread system. At least one additional transverse thread is interwoven in at least one seam zone, with the transverse thread placed in a repeated pattern of over at least three adjacent paper side longitudinal threads, between at least a first pair of paper side and machine side threads, under at least one machine side longitudinal thread, and between at least a second pair of machine and paper side threads.

Abstract: A papermaking fabric for increasing bulk in the paper sheet during forming and/or through air drying which is comprised of a system of MD filaments selectively interwoven with a system of CD filaments having at least smaller and larger filament subsets.

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.

Abstract: A dual layer 14 harness woven papermaking fabric having an upper, or sheet, side and a lower, or machine, side is disclosed and includes a set of machine direction yarns, a first set of cross machine direction yarns extending mainly on the sheet side and a second set of cross machine direction yarns extending mainly on the machine side, both being interwoven with the machine direction yarn, with the sheet side knuckles of the machine direction yarns floating over two of the sheet side cross machine direction yarns. The interlacing of the machine direction yarns and the cross machine direction yarns includes at least one machine direction yarn interposed between the lowermost portions of each of the sheet side cross machine direction yarns and any subjacent machine side cross direction yarns, whereby overlap of adjacent cross machine direction yarns of the machine side set and the sheet side set is substantially avoided.

Abstract: A double layer endless woven forming fabric having a sheet surface fabric structure comprising relatively fine warp and filling yarns exhibiting substantially uniform crimp in both directions, and a relatively coarse wear side fabric structure having woven warp and filling yarns exhibiting crimp predominately in the warp yarns, the layers being joined by interlacing the warp yarns of the wear surface fabric structure with the filling yarns of the sheet surface fabric structure.