Abstract: A paper machine forming screen has a paper side and a machine side. A plurality of synthetic longitudinally extending machine direction threads are provided. A plurality of synthetic cross threads extend generally transverse to the machine direction threads, and the cross threads are disposed in first and second groups and at least of the cross threads have a flattened cross section. The first group threads are disposed in a plane of the paper side and have a repeat floating over a number of the machine direction threads. The second group threads form a plane on the machine side. The flattened cross threads extend parallel to the paper side plane, a distance from about 1.2 to about 2.2 times the distance by which the flattened cross threads extend transverse to the paper side plane.

Abstract: A single layer paper machine screen fabric having longitudinal and transverse threads characterized by the fact that either the longitudinal or the transverse threads are positioned to change the direction of their course diagonally in the plane of the fabric. The center line of such threads is offset from the direction of their course by at least half the thread diameter.

Abstract: A single-ply paper machine wire having a top side and a bottom side and including longitudinal machine direction threads and cross-threads, comprising a first group of cross-threads having at least one pattern repeat comprising differential lacing interwoven with a maximum of five longitudinal threads for forming said top side of said wire; a second group of cross-threads, each thread of said second group of cross-threads disposed between a pair of threads of said first group of cross-threads; said second group of cross-threads having at least one pattern repeat interwoven with at least six longitudinal threads; said second group of cross-threads pattern repeat floating under at least five of said longitudinal threads on said bottom side; and, said longitudinal and said cross-threads being synthetic is disclosed.