Expensive and advanced weaving machine equipment must produce high value-added products in order to be profitable. Therefore, it is imperative to develop products with the development of top-grade products and first-class quality level to high-grade, serialized and high-quality development.
The main purpose of warp sizing. After decades of controversy and production practice, it is now quite clear: increase the wear resistance and the appreciation of the hairiness, because the hairiness will pilling and the adjacent yarn entanglement and break the head; the fine yarn should also be considered for appropriate reinforcement and Bao Shen. When air jet loom weaving, the requirement for sticking hairiness is more prominent. Therefore, sizing is the key. Slurry is a type of polymer compound. The current slurry has developed into a three-legged trend.
An acrylic paste which is a modified starch of a main slurry, and a PVA and an auxiliary slurry.
(1) Modified starch slurry
The first generation: decomposition type - acid hydrolysis starch, oxidized starch, dextrin.
Second generation: derivatives - ethers, esters, crosslinked starch, cationic starch.
The third generation: grafting - thermoplastic, solubility.
Low alcoholysis, low polymerization degree PVA. Such as Japan's Mitsubishi PVA (205).
(3) Acrylic slurry
Acid salts: such as: British VICOL, domestic KD318, 28#, AD, SFB.
Amides: 8% to 25% solid content. Such as: US Sida P-T slurry
Ester: low moisture absorption, low re-sticking. Such as LMA-95
Form: liquid, solid.