With the popularization of dope‑dyeing technology, chemical fiber masterbatch serves as core raw material for colored‑fiber production. Many chemical‑fiber manufacturers face rapid filter‑pressure rise and shortened screen‑replacement cycle during high‑speed filament and fine‑denier spinning. Manufacturers often adjust spinning temperature, chip quality and screen configuration repeatedly, yet production loss remains high. This issue largely originates from pigment dispersion performance of chemical fiber masterbatch, and filter‑pressure value acts as key quantitative indicator for spinnability evaluation.
Excessive pigment agglomerates inside chemical fiber masterbatch cannot be fully disintegrated under screw melting‑shear, and keep depositing in spin‑pack filter layers, resulting in continuous filter‑pressure climbing. Abnormal pressure increase shortens component service life. Furthermore, agglomerates may penetrate filter media, block spinneret orifices and trigger fuzz, yarn breakage and fiber color specks. For fine‑denier and ultra‑fine‑denier high‑speed spinning with tiny spinneret holes, masterbatch dispersion requirement becomes more stringent. Simply lowering pigment concentration cannot eliminate agglomeration fundamentally. Carrier resin system, pigment surface modification and twin‑screw compounding process are decisive factors for filter‑pressure control.
During procurement, purchasers shall pay attention to filter‑pressure test data besides color shade and heat resistance. Machine trial according to actual spinning condition is recommended to predict pressure variation under long‑run continuous production.
As a listed enterprise (stock code:300905), national‑level specialized and sophisticated “Little Giant” enterprise in domestic chemical‑fiber masterbatch sector, Poly Plastic Masterbatch (SuZhou) Co.,Ltd. operates CNAS‑accredited laboratory and national‑level post‑doctoral scientific‑research workstation. It establishes complete evaluation system for masterbatch dispersion and strictly controls filter‑pressure performance for high‑speed spinning of polyester and polypropylene filament & staple fiber. With six manufacturing & R&D bases, the company provides formula adaptation and sample verification according to spinning equipment and fiber specifications, helping chemical‑fiber plants cut component loss and guarantee stable operation of dope‑dyeing lines.
Amid rapid development of differentiated fibers, spinnability indicators including filter‑pressure value are indispensable for comprehensive quality assessment of chemical fiber masterbatch.
