In polypropylene spinning, stable oil pick-up rate directly controls downstream processing quality. Many spinning plants face a tough problem: with the same production line and diluted polypropylene yarn pre-spinning oil, oil content test results differ greatly among different spindles, and pick-up rate fluctuates between batches. Operators tend to adjust oil bath level and oil roller speed, yet uniformity still fails requirements, resulting in insufficient cohesion on partial yarn bundles and slipping caused by excessive oil on others.

This issue is not merely caused by equipment. Polypropylene features inert surface. The dilution system and emulsion particle size of pre-spinning oil dominate its spreading performance on yarn. Large emulsion particles lead to uneven oil deposition and enlarged spindle-to-spindle deviation. Poor emulsion storage stability causes phase separation, which changes active components delivered to oiling station and drifts oil pick-up rate. Besides, hard water used for oil dilution may break emulsion and trigger oil content fluctuation.

Manual sampling inspection can only remedy problems after production. Stable performance requires coordinated management of oil formula, dilution procedure and pipeline delivery. When purchasing polypropylene yarn pre-spinning oil,, manufacturers shall check emulsion stability and particle size distribution besides basic physical indicators, and select oil compatible with local water quality.

TAO NANO CHEMICALS(DONGGUAN) CO.,LTD. focuses on R&D of textile spinning oils. Its self-developed polypropylene yarn pre-spinning oil, adopts nano emulsification system with narrow particle size distribution and good hard-water resistance. The diluted emulsion stays stable without stratification for long time and guarantees consistent oil pick-up across spindles. The technical team can inspect pipelines and oil bath conditions on site, optimize dilution ratio and oiling parameters, and verify solutions via sample trials. It helps factories reduce yarn defects and production losses induced by uneven oil coverage.

Under the trend of refined spinning management, stable emulsion system of polypropylene yarn pre-spinning oil, is the core to eliminate oil content differences among spindles.