Method and apparatus for prewetting yarn
AssigneeWest Point Foundry & Machine Co.
InventorsCharles R. Christian, Harold E. Cook
Life of this patent
Estimating the term…
Abstract
Prewetting yarn by applying a liquid spray to the yarn before applying size to the yarn. A yarn sheet comprising a plurality of yarns is moved past one or more sprayers for directing a spray of prewetting liquid to the surface of the yarn. The amount of prewetting liquid sprayed onto the yarn is determined by various yarn parameters, and is adjusted in response to the speed of the moving yarn sheet so that variations in speed do not affect the amount of prewetting liquid sprayed onto the yarn. The amount of time elapsing between spraying the yarn with prewetting liquid and applying size to the yarn may be varied, to adjust the time for the prewetting spray to penetrate the yarn.
Claims4
Apparatus for prewetting yarn moving along a path including a location for applying size to the yarn, comprising:
- at least one sprayer operative to direct a liquid spray toward the yarn before the yarn arrives at the sizing location, so as to wet the yarn;
- and
- means operatively associated with the yarn on the path to selectively adjust the amount of time elapsing before the wetted yarn arrives at the location for applying size, so as to adjust the extent to which the sprayed liquid penetrates the yarn before the size is applied.
Dependencies are inferred from the claim text.