Rotary Screen against Digital Print When Repeat Orders Shrink
When repeat print orders fall below 800 metres, digital printing eliminates rotary screen setup fees and waste, cutting landed costs and lead time.
Pre-Padding Preparation
Fabric Absorbency Preparation
Chemical preparation steps remove hydrophobic impurities, sizes and waxes from raw fabrics before continuous liquid padding operations commence. Executing pre-padding preparation guarantees uniform capillary action across the entire fabric width, enabling balanced liquor pickup during high-speed pad-dyeing or chemical finishing. The process governs woven and knitted cotton or blend fabrics prior to dye bath immersion, concluding its scope once the fabric enters the padder liquor trough.
Impurity Removal Mechanics
Alkaline scouring breaks down natural cotton waxes while enzymatic desizing hydrolyzes warp starch films applied during weaving. Effective pre-padding preparation requires thorough washing and neutralization to eliminate residual alkali that alters dye bath pH in subsequent processing stages. Residual oils left on synthetic blends cause hydrophobic spots where dye liquor cannot penetrate properly.
Wetting Speed Verification
Standard drop tests evaluate fabric absorbency by measuring the time in seconds required for a water droplet to absorb fully into the fabric surface. Under optimal pre-padding preparation conditions, drop absorption occurs in under two seconds across the left, centre and right sections of the fabric roll. Uniform absorbency prevents side-to-centre shade variations during continuous pad-thermosol dyeing operations.
Dye Pickup Consistency
Consistent fabric moisture content prior to padding prevents localized liquor dilution and streaky shade appearance in finished goods.