Sizing
Sizing is the process of coating warp yarn with a starch or polymer-based film to strengthen it and reduce friction during weaving.
Sizing happens before warping and beam preparation. The sized warp resists abrasion in the loom's heald frames and reed, so warp breaks — and the wastage and downtime they cause — drop sharply.
Inadequate sizing is one of the most common causes of high-wastage looms. When wastage-per-machine flags spike on a particular loom, the diagnostic chain often starts at sizing — easier to surface when production data is live, not monthly.
RELATED TERMS
Warp
Warp refers to the lengthwise yarns held under tension on a loom. The warp is pre-loaded as a beam and runs through the loom for the duration of the order.
Beam
In weaving, a beam is a long cylindrical roll that holds the warp yarn pre-loaded for a loom. Each weaving order begins with beam preparation and beam loading.
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