Biased multi-layer structural fabric composites stitched in a ve

Details Biased multi-layer structural fabric composites stitched in a ve Biased multi-layer structural fabric composites stitched in a ve

1983-09-28

1984-11-27

Feldbaum, Ronald

Textiles: knitting

United needle machines

Straight

28100, 156439, D04B 2306

Patent

active

044844590

ABSTRACT:
Non-woven, multi-layer biased structural fabric is disclosed, which is comprised of at least three layers of parallel structural fibers, with no secondary yarns or fibers in the plane of the layers to hold said fibers in parallel relationship. Both the vertical relationship of the layers and the parallelity of the fibers within each layer is maintained by vertical stitching. The fabric may be made into a structural composite by saturation and subsequent curing with a curable, crosslinking resin. An apparatus and method for forming that fabric and composite is also disclosed, which is comprised of aligned weft lay down carriages arranged sequentially and further aligned with a stitching machine. A means for advancing the fibers from each weft lay down carriage into the stitching machine passes along the weft carriages. As each layer is laid down on top of the previous layer, it is engaged by the advancing means and so brought into the stitching machine, where the layers are vertically stitched through. At least one of the weft carriages is oriented with respect to the stitching machine, so that the fibers laid down thereby comprise a biased layer.

REFERENCES:
patent: 3321348 (1967-05-01), Rupp
patent: 3573151 (1971-03-01), Dawbarn
patent: 3607565 (1971-09-01), Eaton
patent: 3680332 (1972-08-01), Bassist
patent: 3756893 (1973-09-01), Smith
patent: 3878591 (1975-04-01), Jense
patent: 4380913 (1983-04-01), Wilkens
patent: 4395888 (1983-08-01), Wilkens

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