METHOD OF PRODUCTION OF MULTI-LAYER FABRIC Russian patent published in 2014 - IPC D03D11/00 

FIELD: textiles, paper.

SUBSTANCE: method of production of multi-layer fabric lies in successive formation of one or more sheds, with simultaneous or sequential laying in them of weft yarns, beat of weft yarns to the edge of the fabric, retraction of the fabric and release of the warp. In order to reduce the load on the warp at beating, to improve dimensional stability of the fabric and the degree of filling it with yarns, and to reduce the fabric shrinkage in width, the beating of weft yarns is carried out with the open shed and the reed is retained at the fabric edge up to the subsequent laying of the weft threads. In order to stabilise the tension of the warp threads in the fabric formation cycle, the forced compensation of change in the length of the warp yarns is carried out in the shed independently for each branch of the warp and consistently with the position of the heald frame. When developing the layered-backing fabrics to reduce abrasion of warp yarns and simplify the system of management of retraction of the fabric, forming individual layers and their pulling to the other layers is carried out by changing the stroke of the movable reed, and the direction of pulling is set by tilting the movable reed when it moves to the edge of the fabric in the direction of the layer to which the newly formed layer is pulled.

EFFECT: invention enables to reduce the dynamic loads on the warp threads during beating and shedding, and to reduce the fabric shrinkage in the width.

3 cl, 4 dwg