Production Process Factory & Factories

In modern nonwoven textile manufacturing, the distinction between standard conversion mills and tier-one production process factories lies within their precision web-forming and high-pressure water-needle hydroentanglement controls. Operating out of Changshu, Jiangsu Province, YDL Nonwovens (Changshu Yongdeli Spunlaced Non-woven Fabric Co., Ltd.) has continually engineered state-of-the-art spunlace technologies since 2007. The core factory paradigm transitions beyond basic assembly: it manages mechanical carding kinetics, high-pressure continuous fluid dynamics, thermodynamic moisture management, and in-line chemical grafting under one continuous, automated infrastructure.

Fiber Opening, Dynamic Blending, and Multi-Stage Carding Kinetics

The production lifecycle begins with raw staple fiber selection. Industrial processes manage specialized compositions across virgin Polyester (PET), regenerated Viscose/Rayon, Polypropylene (PP), biodegradable Polylactide (PLA), as well as extreme-performance inorganic filaments such as Aramid, Pre-oxygenated fibers, Basalt, and Polyimide. Bale plucking machines deploy micro-load pneumatic sensors to feed balanced fiber blends into fine-opener cylinders. This mechanical action individualizes fibers without damaging their structural crimp, ensuring high volumetric bulking.

Subsequently, high-speed carding engines arrange random fiber matrices into targeted web designs. A critical distinction in our production lines is the capability to alternate between Parallel Carding (yielding high Machine Direction tensile strength suited for wipes and hygiene goods) and Cross-Lapped / Semi-Cross Lapped Webs (which equilibrate the MD/CD tensile ratio to approximately 1:1). This mechanical manipulation eliminates transverse stretch fatigue, making cross-lapped substrates the global standard for synthetic leather backing and industrial filtration media.

High-Pressure Hydroentanglement Dynamics: Water-Needle Precision

At the core of the spunlace factory floor sits the multi-stage hydroentanglement manifold. Unbonded fiber batts pass over perforated nickel suction cylinders or structural patterning drums while being subjected to progressive rows of high-pressure micro-water jets (operating at pressures ranging from 30 bar up to 250 bar). The kinetic energy delivered by these micro-jets forces the fibers to twist, rotate, and entangle around adjacent fibers. Because no chemical binders, thermal resin lattices, or synthetic starches are applied during web consolidation, the resulting fabric preserves its inherent fiber softness, ultra-low lint profile, and superior drapeability.

The engineering triumph of this phase relies on real-time deionization and closed-loop water treatment. Water circulating through our hydraulic jets is continuously filtered through multi-media sand filters, active carbon filters, and micro-porous bag systems. By monitoring total dissolved solids (TDS) and continuous surface tension, jet orifice clogging is mitigated, ensuring consistent physical aperture geometries across master rolls exceeding 3.2 meters in working width.