NIPS Hollow Fiber Membrane spinning System

8. Equipment configuration: Each system is equipped with dual 150 L reactors integrating automatic heating, insulation, stirring, and defoaming functions to ensure precise process control and improved product consistency.

9. System modules: The complete hollow fiber spinning system consists of multiple core modules and adopts an 8-hole design.  Monthly output is stably 10,000 m², effectively supporting the customer's capacity expansion goals.

10. Technical features: Developed based on the NIPS process, the system precisely controls the solvent/non-solvent exchange rate to form hollow fiber structures with excellent separation performance, suitable for environmental applications such as wastewater treatment and seawater desalination.

11. Cooperation details and technical breakthroughs:

Background of cooperation:

In 2017, as a leading enterprise in environmental water treatment, Customer Bijie faced surging market demand for hollow fiber membranes.  To increase capacity and optimize product quality, the company decided to introduce advanced NIPS hollow fiber membrane production line systems to consolidate its market position and meet the urgent need for efficient, stable membrane materials.

Technology selection and cooperation decision:

After multiple rounds of technical evaluation and supplier comparison, Customer Bijie ultimately chose to partner with Trustech.  Trustech's deep expertise in membrane technology, ability to deliver customized solutions, and comprehensive after sales service made it an ideal partner.  The two parties jointly defined the technical specifications and implementation plan for the NIPS hollow fiber membrane spinning machine and systems to ensure efficient and stable operation.

Technical breakthroughs and innovations:

● High speed winding and stable operation: With a winding speed of 30 m/min and 10 hour continuous run capability, the spinning systems significantly increased production efficiency.  Optimized mechanical structures and control systems ensured fiber quality stability at high speeds.

● Intelligent reactor control: Each system's dual 150 L reactors integrate automatic heating, insulation, stirring, and defoaming to achieve precise process control.  Intelligent algorithms optimize stirring speeds and temperature profiles, effectively reducing bubble formation and improving fiber uniformity and performance consistency.

● Modular design and flexible expansion: The system adopt a modular design with standardized interfaces between modules, enabling fast installation, commissioning, and maintenance.  They also support flexible capacity expansion, allowing production line configurations to be adjusted to market demand and lowering investment risk.

● FCT 8-hole high efficiency spinning technology: The 8-hole spinneret design, aligned with NIPS characteristics, enables efficient fiber production.  Precise control of flow and pressure distribution across orifices ensures uniform fiber diameter and porosity, enhancing separation performance and service life.

Outcomes and impact of the cooperation:

● Significant capacity increase: Since commissioning, Customer Bijie's monthly hollow fiber membrane output has stably reached 20,000 m², effectively meeting market demand for high-quality membranes.

● Product quality optimization: With the advanced NIPS production lines, Bijie achieved notable improvements in separation performance, flux stability, and antifouling capability, earning broad customer recognition.

● Enhanced market competitiveness: The dual gains in capacity and quality of Trustech spinning equipment significantly strengthened Customer Bijie's competitiveness in environmental water treatment.  The company expanded into multiple high end markets, further consolidating its industry leading position.

● Industry experience accumulation: The cooperation of Trustech delivered substantial economic benefits for Customer Bijie and valuable industry experience for Trustech.  Building on this, Trustech has continuously optimized NIPS line performance and successfully extended offerings to TIPS lines, MBR membrane lines, and other areas, providing customized solutions to more customers.

Service experience: 

In addition to NIPS lines, Trustech provides customized TIPS (Thermally Induced Phase Separation) hollow fiber membrane spinning mahcine, MBR (Membrane Bioreactor) membrane spinning equipment, flat-sheet membrane casting system, and hollow fiber membrane spinnerets. To date, it has served over 630 customers, completed more than 3,200 product batches, and accumulated extensive industry experience.

Basic product performancecustomer Bijie membrane:

● Product name:  Polyethersulfone membrane

● Membrane material: PES

● Pore size (μm):  <0.03

● Inner/outer diameter (mm):  0.7/1.3 

● Elongation at break (%):  >80

● Single-fiber tensile strength (g):  ≥500

● Hydrophilicity (water contact angle, °):  <20

● Initial pure water flux (L/(m²·h), 25°C, 0.10 MPa):  ≥500

● Oxidation resistance (hypochlorous acid):  Good

● Bubble point (water, MPa):  ≥0.30

● Maximum feed pressure (MPa):  0.40

● Permeate turbidity (NTU):  ≤0.2

● Molecular weight cutoff (kDa):  67

● Bacteria retention rate (%):  ≥99.9999

● pH range:  2–12

● Cleaning recovery rate (%):  >96