Moisture Control: Practical Applica tion in Rayon Slashing
1940
Yelland, William E.
Results obtained during a study of the sizing of continuous filament bright viscose rayon warps indicated that: (1) Greater uniformity in the regain of sized warps was made possible by means of automatic control of the steam pressure in the dry cans in place of the usual manual control. (2) A pressure of 7 lbs, to 9 lbs. on six dry cans was szuffi cient to dry a warp of the type used in these experiments to a regain of 10% at a speed of 40 yards per minute. (3) The pressure required was determined partly by the amount of moisture left in the warp by the squeeze roll. The type and condition of the blanket on the roll was an important factor. (4) At pressures below 7 lbs. in the dry cans good control was not obtained due to the clogging of the condensate traps in the steam line. (5) Automatic control was most effective when there were fewest stops during slashing. Warps must be made curefully in order to prevent stops due to crossed ends, cylinder laps, etc., on the slasher.
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