requirements for twist-free roving for winding

- Sep 25, 2018-

The requirements for twist-free roving for winding are as follows: 

(1) good banding and flat banding; 

(2) good untwisted roving without looping and forming "bird's nest" yarn when it is unwound from the yarn barrel; 

(3) uniform tension and no drape; 

(4) uniform linear density, generally less than (+) 7%; (3) good soakability of untwisted roving, when it passes through resin groove It is easy to wet and soak the resin.