TREArMENT FOR TEXTILE INSI-LAITOX 



235 



direction as the wire travel hut at one-third the speed. The slower 

 speed causes a wiping action on the wire, ironing down the fibers, but 

 still tends to feed wire splices through the dies. The size of the 

 grooves must be proportioned exactly for each gauge of wire, the first 

 pass being the largest. This is necessary so the extending fibers will 

 be gathered in rather than caught between the dies and cut off. Dur- 



n 



Fig. 4 — An enlargement showing the gradual pressing down of the textile fibers 

 and smoothing of the cellulose acetate coating as the wire receives the successive 

 applications. 



ing the next three passes these fibers are gradually ironed down, as 

 illustrated in Fig. 4, while the fifth and sixth passes are largely for 

 smoothing down and sizing. Adjustments were provided for lining 

 the dies up with the wire so the pressure on both sides of the wire 

 would be equal, resulting in an even coating. Means were provided 



