Bi-axial bias weaving machine and material thereof

Abstract

The present invention involves a Bi-axial bias weaving machine and two dimension woven structures (material) having interlaced bias strands. The material includes plain, twill and satin structures made of two bias flat strands (tape) interlacing each other at particular angles (30-60). The weaving machine includes bias holders assembly, chains, bias rapiers and take-up assembly. The embodiment of this invention may be utilized to produce high performance fabrics such as textile performs for aerospace composites.

What is claimed is: 
     
         1 . Bi-axial bias woven fabric, comprising;
 a plurality of first biasing yarn extending in a first direction; and   a plurality of second biasing yarn extending in second direction, the second direction being at a first predetermined angle to the first direction.   
     
     
         2 . The bi-axial bias woven fabric according to  claim 1  wherein the first predetermined angle is 30 to 60 degrees. 
     
     
         3 . The bi-axial bias woven fabric according to  claim 1  wherein the second predetermined angle is 30 to 60 degrees. 
     
     
         4 . A method of weaving a bi-axial bias woven fabric comprising the step of;
 feeding of bias yarns at predetermined angles (+/−);   lifting of bias yarns at predetermined angles (+/−) for desired woven structure; and,   placement of bias yarns at predetermined angles (+/−) for new cloth fell position.   
     
     
         5 . An apparatus for weaving Bi-axial Bias woven structure which includes only bias yarns, the apparatus comprising:
 a plurality of rotary chains, each rotary chain holds bias holders, each bias holder supports bias strand under tension, the bias strand extending from bias holder in downstream direction;   a plurality of rapiers configured to engage at least one of plurality of bias holders; and,   a plurality of actuators disposed to lift the bias holders in upward direction for desired woven structure.   
     
     
         6 . The bias holder of  claim 5 , for holding bias strand under tension, as a part of bi-axial bias weaving machine, comprising two plates laminated with suitable material to hold the bias strand. 
     
     
         7 . The bias holder according to  claim 1 , wherein a bias strand is gripped in between two plates by force of spring. 
     
     
         8 . A rotary chain according to  claim 5  for holding the bias holder, as a part of bi-axial bias weaving machine. 
     
     
         9 . A plurality of actuators according to  claim 5  to form an opening among the bias strands that extends from the bias holder to woven products.