Hollow Fiber Spinneret

A TIPS (Thermally Induced Phase Separation) membrane spinneret is the core component used for preparing polymer microporous membranes via the thermally induced phase separation method. Trusstech TIPS spinning spinneret is a hollow fiber spinning head specifically designed for the "high-temperature melt–cooling-induced porosity" route, used to produce microporous membranes from crystalline polymers such as PVDF, PP, and PE. Its structure and functions must simultaneously satisfy around-200°C melt sealing, rapid cooling induced pore formation, and controllable porosity. Its working principle relies on temperature changes to induce phase separation in a polymer solution, ultimately forming a membrane material with a microporous structure.

Trustech FCT 5th Generation Homogeneous Membrane Spinneret is the core forming equipment developed on the Fast Change Technology (FCT) . Featuring a"split spin core + flow channel plate" architecture and a high precision monolithic core,Trustech spinning spinneret is specifically designed for producing homogeneous polymer membranes such as gas separation membranes, pervaporation membranes, and high precision filtration membranes which exhibit uniform structure without a pronounced pore gradient. Building on the FCT series' core strengths of"high precision and easy maintenance," spinneret structure and features are specially optimized to meet the stringent requirements of homogeneous membranes for feed uniformity, structural stability, and performance consistency. It is a key enabler for the large scale, high quality production of homogeneous membranes, achieving high homogeneity across holes and batches. Its central objective in multi-hole parallel production is to stabilize outer diam

The FCT 5th generation MBR spinneret plate is a high precision, high efficiency core production component developed by Trustech on its independently innovated Fast Change Technology (FCT) for manufacturing hollow fiber membranes used in MBRs (membrane bioreactors). It is a revolutionary spinning spinneret whose core design philosophy is through a split, modular architecture to delivers exceptional ease of use, high precision, and long service life. It addresses the traditional problems of hollow spinneret plates such as complex disassembly/assembly, susceptibility to damage, and high maintenance costs, establishing a technological benchmark in the field of hollow fiber membrane manufacturing.

The FCT 6th generation spinneret plate is the core forming component for hollow fiber membranes, developed by Trustech based on Fast Change Technology (FCT) and designed specifically for wet-process NIPS (non-solvent induced phase separation) spinning.

Hollow fiber membrane spinnerets are the key parts for making hollow fiber membranes. The spinneret geometry, functional characteristics, and fabrication accuracy directly decide the fiber membrane's concentricity, wall uniformity, pore size distribution, mechanical robustness, and overall separation efficiency.

A sol - gel sintering spinning spinneret is a coaxial extrusion spinning assembly for inorganic/ ceramic hollow fiber membrane. The outer phase is a sol or organic–inorganic hybrid precursor, containing inorganic particles or precursor solution with organic binders/ porogens, while the inner phase is a supporting bore fluid which may be a coagulant, a nonsolvent, or an inert fluid. After shaping, the green fibers undergo gelation, solvent exchange, drying, debinding, and high temperature sintering, typically 400 - 1200°C, to yield dense or porous inorganic/ ceramic hollow fibers membrane such as alumina, zirconia, silica, titanates, and the approach is also applicable to metal/glass precursor systems.

A dry-jet wet spinning spinneret is the core forming component tailored to the Dry-Jet Wet Spinning process for producing hollow fiber membranes. THis spining spinneret primary function is to precisely co-extrude a polymer casting dope and a bore fluid through coaxial flow channels, so that the extruded "liquid filament" first passes through an air gap which calls dry zone for partial solvent evaporation and initial drawing, then enters a coagulation bath which calls wet zone for phase separation and solidification, ultimately forming hollow fibers membrane with specified structures and properties. The spinning spinneret must be designed to accommodate both "liquid filament stability in the air gap" and "initiation of phase separation in the coagulation bath,"acting as the critical bridge between dry state drawing and wet state solidification.

Dual layer dope spinneret spinneret, also called a composite membrane spinneret, is a key forming component used in membrane separation/filtration manufacturing. In a single co-extrusion step, it laminates two or more functional dopes into a prescribed layered architecture and shapes them through micron-precision orifices or slots into a layer-by-layer structured membrane. Its core role is to stably and controllably stack and form multiple fluid streams within a microscale flow space.

Melt Extrusion Spinneret, also called melt Spinning Spinnerette is a core precision component in melt-spinning processes. It forces high temperature polymer melts (e.g., PET polyester, PP polypropylene, PA nylon, PI polyimide) through micro-fabricated orifices under high pressure, typically with diameters from tens of micrometers up to a few millimeters, to uniformly extrude continuous filaments, fibers, or films. Its design must address three key challenges: uniform distribution of the high temperature melt, precise shaping and control, and resistance to corrosion and wear.

The rib-reinforced hollow fiber membrane spinneret, also called Core Fiber Reinforced Spinning Spinneret is a specialized spinneret assembly used for preparing hollow fiber membranes via non-solvent induced phase separation (NIPS). Based on conventional coaxial and multiphase spinneret structures, it adds a reinforcement filament introduction and positioning channel, which can stably introduce one or three high strength fine filaments (e.g., nylon/monofilament fishing line) into the membrane wall or at specific radial positions at the moment of fiber formation. The reinforcement filaments co-form with the membrane matrix in the coagulation bath, significantly improving tensile strength, anti-knotting, anti-brittle fracture performance, and resistance to operational stresses, without compromising the membrane's separation performance or hollow structure.

Hollow fiber membrane spinnerets are the core components for producing hollow fiber membranes. Their structural design, performance, and manufacturing precision directly determine the fiber's concentricity, wall thickness uniformity, pore size distribution, mechanical strength, and separation performance.