Many polypropylene spinning mills report that after long‑term operation of circulating‑spray oiling systems, Polypropylene yarn spinning oil tends to generate accumulated foam and floating‑oil precipitation. Such troubles interfere with oiling uniformity of tow filaments, trigger fuzz and yarn breakage and raise maintenance frequency of production lines. Based on field operating data collected from multiple clients, Tao Nano Chemicals (Dongguan) Co., Ltd fine‑tunes the formula of Polypropylene yarn spinning oil and improves its low‑foam and anti‑precipitation performance under continuous circulating conditions.

Emulsification stability of Polypropylene yarn spinning oil will be challenged under conditions including high‑speed spraying, stirring and reflux disturbance. Subject to temperature fluctuation and impurity mixing in circulation, conventional formulas produce dense foam. Foam blocks contact between oil agent and tow and causes insufficient local oil pick‑up. Floating‑oil precipitation leaves oil stains on fibre surface and brings hidden troubles for subsequent dyeing and setting. Many mills only test freshly‑prepared stock solution, ignoring performance decay of Polypropylene yarn spinning oil after long‑time recycling.

Tao Nano Chemicals simulates client‑site circulating‑oiling conditions in its in‑house laboratory and carries out long‑term circulation‑aging tests. Foam height, delamination and precipitation status of Polypropylene yarn spinning oil are monitored under varied temperature and impurity‑content levels. Emulsifier and solubilizer ratios are adjusted to restrain foam generation and floating‑oil precipitation, without weakening core performances of lubrication and antistatic property. The enterprise also provides clients with operation suggestions such as filter replacement cycle and temperature control range to extend service life of oil agents.

Purchasers should not merely rely on test reports of fresh oil. Long‑term stability under circulating‑oiling conditions also matters a lot. The enterprise brings circulation‑simulation into sample‑validation workflow, reduces spinning abnormalities caused by oil‑system variation from the source and supports stable operation for spinning manufacturers.