Filament Polyester and Nylon Warp Preparation
topic
Polyester and nylon filament warp preparation typically eliminates sizing from the process when yarn is sufficiently cohesive from air interlacing at 40 to 80 nodes per metre that provides inter-filament bonding substituting for adhesive size, with winding at 800 to 1500 metres per minute on precision cones, warping at 600 to 1000 metres per minute with static electricity control by ionising bars, and antistatic lubrication at 0.3 to 1.0 percent for friction management through heddle and reed contact during weaving.
Role
Defines the fundamentally simpler preparation process for filament synthetic warp yarns that eliminates the sizing and desizing operations required for staple fibre warps, with the smooth surface and high strength of synthetic filament making adhesive sizing unnecessary when inter-filament cohesion is provided by air interlacing, but requiring careful attention to static electricity management and filament lubrication that replace the weavability improvement functions that size performs on staple yarns.