Textile material in sheet form for technical uses
AssigneeEtablissement les Fild d'Auguste Chomarat et Cie
InventorMichel Serillon
Life of this patent
Estimating the term…
Abstract
A textile material in sheet form consisting of a warp and weft fabric produced by rovings of continuous technical filaments (for example, glass, carbon, or aramide filaments) without torsion is disclosed. The textile material may be produced according to a plain weave or derivative thereof, for example, the density of the warp threads (C) and the weft threads (T) may be balanced. The warp threads(C) or weft threads (T) are weakened or cut individually at predetermined intervals without any noticeable deterioration in the characteristics of the weft or warp threads located beneath the weakened or cut area. The areas in which a series of threads of the fabric (C) or (T) are weakened or cut may be produced with a lateral and vertical thread course between two consecutive threads.
Claims20
A textile material in sheet form, the textile material comprising a warp-and-weft fabric produced from twist-free roving assemblies of continuous technical filaments, the fabric comprising warp yarns and weft yarns,
- wherein
- at least one of the warp yarns and weft yarns are weakened or cut individually in areas at predetermined intervals with little or no appreciable deterioration in the characteristics of the weft or warp yarns lying beneath the weakened or cut areas;
- and
- wherein the weakened or cut areas are produced with a lateral step and a vertical step between two consecutive yarns.
A process for the production of a textile material, the method comprising:
- providing a warp-and-weft fabric from twist-free roving assemblies of continuous technical filaments, the fabric comprising warp yarns and weft yarns,
- at least partially cutting at least one of the warp and weft yarns in areas, at regular intervals, on one side of the fabric, with little or no deterioration of the weft or warp yarn beneath the at least partially cut areas, wherein the at least partially cutting is performed with a lateral step and a vertical step between two consecutive yarns.
A plant for producing a textile material, the plant comprising:
- a feed station for providing a warp-and-weft fabric from twist-free roving assemblies of continuous technical filaments, the fabric comprising warp yarns and weft yarns having widths;
- a take-up station for collecting the textile material produced;
- and
- an assembly for at least partially cutting at least one of the warp and weft yarns of the fabric at regular intervals and in a manner offset from one yarn to the neighboring yarn, said assembly comprising:
- a first roll and a second roll driven in synchronism with the movement of the fabric;
- wherein the first roll comprises a series of blades, the width of each blade corresponding substantially to the width of the yarns to be cut, and wherein said blades are offset one with respect to another, both laterally and circumferentially.
Dependencies are inferred from the claim text.