Desizing Considerations in Warp Preparation Planning
topic
Desizing planning for sized cotton warps selects enzymatic, oxidative, or hydrolytic desizing methods compatible with the size compound used, with enzymatic desizing using alpha-amylase being the standard for starch-sized warps at 60 to 80 degrees Celsius for 2 to 16 hours depending on enzyme concentration, and with PVA requiring alkaline hydrolysis or specific enzyme desizing not available for all PVA types, with desizing completeness being verified by iodine test for starch and TOC analysis for PVA.
Role
Integrates the post-weaving size removal requirement into warp preparation planning by ensuring that size compound selection is compatible with the available desizing processes in the wet finishing department, preventing the situation where a sizing agent selected for warp preparation performance creates an intractable desizing problem in finishing that cannot be resolved without fabric damage or prohibitive desizing costs that make the size incompatible with the complete production process.