Silk Warp Preparation and Degumming Considerations
topic
Silk warp preparation handles the extremely fine and delicate filament of 10 to 30 decitex requiring low winding tensions of 2 to 5 percent of breaking strength, silk-specific winding machine components with polished ceramic guides preventing surface damage, and light sizing with natural gums or gelatin providing cohesion without the harsh chemical environment that would damage silk sericin protein, with degumming timing relative to sizing affecting the adhesion properties of size to silk surface.
Role
Addresses the exceptional delicacy of silk filament that requires the most careful mechanical handling of any commercial warp yarn, with silk warp preparation being the most demanding technically from the combination of extreme filament fineness, sensitivity to tension variation, and surface protein chemistry that responds differently to adhesive size compounds than the cellulose surface of cotton or the synthetic polymer surface of polyester filament warps.