Abrégé

A method and apparatus for forming yarn provides a feeding component that feeds one or more ribbons of tow starting material, a drafting component that includes at least two pairs of rollers through which the feed materials pass and which stretch- breaks the starting material into a cohesive elongated network of fibers formed from the filaments of the tow material. The stretch-broken intermediate product may be a blended cohesive network formed form multiple feed materials. The intermediate product may be spun directly into yarn in one winding/twisting operation or it may be combined with other simultaneously produced intermediate products. Various yarns may be used as produced or otherwise combined to form various fabrics and other materials used in fire-retardant and heat resistant products. The starting materials may be PAN, para- and meta- aramid fibers, viscose rayon, and stainless steel and other suitable materials.

Classes IPC  ?

• D01G 15/02 - Machines de cardage
• D01G 25/00 - Dispositifs de formation de nappes, non intégrés dans les machines désignées ci-dessus
• D01G 27/00 - Dispositifs enrouleurs de nappe ou de ruban, p. ex. pour recevoir la production des batteurs pour coton, des cardes pour jute ou des étirages à barrettes pour laine peignée