Leading Hollow Fiber Membrane Spinning Machine and Spinneret Manufacturer - Trustech

Trustech NIPS Hollow Fiber Membrane Spinning Spinneret

Trustech NIPS Hollow Fiber Membrane Spinning Spinneret Gas Separation

Wet Spinneret Wet Spinning Factory

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Hollow Fiber Spinneret

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Product details of the wet spinning

Product Description

The material used for Shanghai Trustech Technology Development Co., Ltd. is new and good for health. We conduct a variety of rigorous tests to ensure that our products are defect free and meet high quality standards. Shanghai Trustech Technology Development Co., Ltd. strives to become a green and efficient wet spinning company.

Main structure and mechanism

Wet Spinneret Wet Spinning Factory 3 Split design: decouples the spin core from the flow channel plate; no locating pins; quick removal and installation like screwing in a bolt.

Wet Spinneret Wet Spinning Factory 4 Monolithic high precision spin core: one-pass machining of critical geometries of spinneret; machining accuracy up to 0.002 mm and concentricity of 0.003 mm; bore needle resists runout and is less prone to damage.

Wet Spinneret Wet Spinning Factory 5 Iso-pressure distribution and flow straightening: multi-stage damping chambers with equal resistance distribution reduce pulsation and inter hole flow deviation, ensuring a consistent annular gap shear field.

Wet Spinneret Wet Spinning Factory 6 Optimized orifice: micro-cone + cylindrical hybrid outlet with chamfers and mirror polishing to minimize shear discontinuities and filament hang up, supporting a wide process phase inversion window.

Wet Spinneret Wet Spinning Factory 7 Multi-hole modularity: supports expansion to 8/12/16/20/32 holes;

symmetric layout and optimized thermal paths reduce the impact of thermal

drift and assembly stress on uniformity.

00Trustech hollow fiber spinneret 16hole spinning (2)

Trustech hollow fiber spinneret

Trustech Spinneret Key Design Elements Trustech

These parameters are fundamental to spinneret design and directly determine the membrane’s final performance:

Parameter	Description	Influence on membrane performance
Flow channel (R)	The runner for transporting, buffering, and distributing the dope and bore fluids.	Different structures should be optimized according to material properties, viscosity, spinneret orifice size, and hole quantities to achieve optimal spinning performance.
Annular gap width (d)	The gap (thickness) of the dope flow channel.	It primarily determines the hollow fiber wall thickness. Narrower gaps yield thinner walls and lower mass-transfer resistance, but may reduce mechanical strength.
Bore tube outer diameter (d₁)	The outer diameter of the central tube forming the inner wall of the annular gap.	Together with the outer sleeve inner diameter, it defines the annular gap width.
Outer sleeve inner diameter (d₂)	The inner diameter of the spinneret outer sleeve forming the outer wall of the annular gap.	Together with the bore tube outer diameter, it defines the annular gap width and the fiber outer diameter.
Central tube inner diameter (d₃)	The diameter of the bore fluid channel.	It primarily determines the fiber inner diameter. The inner diameter affects membrane module packing density and the pressure drop of fluid inside the fiber.
Length-to-gap ratio (L/d)	The ratio of the flow channel length (L) to the annular gap width (d).	It affects spinning stability. Designing an appropriate L/d according to material properties and process conditions helps stabilize flow and eliminate entry effects, resulting in more uniform extruded fibers membrane.
Concentricity	The coaxial alignment among the dope layer inner diameter at the spinneret outlet and the bore tube inner and outer diameters.	It affects wall-thickness uniformity and bubble point pressure.
Extrusion face geometry	The foremost geometry of the spinneret, such as flat or micro-tapered.	It influences draw-down and deformation after extrusion, especially important for the air-gap segment in dry-wet spinning.

The Advantages of Trustech Dual Layer Spinneret Trustech

The spinneret design covers a wide dope viscosity range, offers strong versatility, high spinning stability, and effectively reduces issues such as filament breaks.

Wet Spinneret Wet Spinning Factory 11 Modular Design with Separate Spinneret Core and Flow Channel Plate:

No positioning pins needed, making assembly and disassembly as simple as using a screw.

Wet Spinneret Wet Spinning Factory 12 Integrated Spinneret Core:High precision and good concentricity.

Wet Spinneret Wet Spinning Factory 13 Robust Needle Design:The Bore liquid needle is not easily damaged.

Wet Spinneret Wet Spinning Factory 14 Easy Cleaning and Maintenance:User-friendly cleaning and maintenance ,friendly for non-professional operators

Wet Spinneret Wet Spinning Factory 15 High Reliability:Stable and consistent performance.

Wet Spinneret Wet Spinning Factory 16 Extended Service Life:

Longer operational lifespan.

Product Parameters

Brand	Trustech	Application	NIPS
Material	SUS304,SUS630,SUS316L	Holes/Pack	1-32
Dope inlet Thread	G1/8, BSP1/8,NPT1/8	Minimum membrane OD	0.20mm
Bore liquid inlet thread	G1/8, BSP1/8,NPT1/8	Customize thread	Yes
Precision	±0.002mm	Concentricity	0.003mm
Design	FCT design	Connections	Standard
Viscosity application	1000-300000cp	Roughness	Ra0.2-0.8
Solvent	DMAC, DMF, NMP	Temperature	65℃

Common Specifications

No.	General Specification	Application	Design Type	Type
1	0.35/0.19/0.13	NIPS	FCT design	Single-aperture/ Multi-aperture
2	0.40/0.19/0.13	NIPS	FCT design	Single-aperture/ Multi-aperture
3	0.5/0.28/0.15	NIPS	FCT design	Single-aperture/ Multi-aperture
4	0.6/0.4/0.2	NIPS	FCT design	Single-aperture/ Multi-aperture
5	0.8/0.4/0.2	NIPS	Conventional design/ FCT design	Single-aperture/ Multi-aperture
6	1.3/0.7/0.4	NIPS	Conventional design/ FCT design	Single-aperture/ Multi-aperture
7	1.4/0.8/0.6	NIPS	Conventional design/ FCT design	Single-aperture/ Multi-aperture
8	1.5/0.9/0.6	NIPS	Conventional design/ FCT design	Single-aperture/ Multi-aperture
9	1.6/1.0/0.6	NIPS	Conventional design/ FCT design	Single-aperture/ Multi-aperture
10	1.8/1.1/0.5	NIPS	Conventional design/ FCT design	Single-aperture/ Multi-aperture
11	1.9/1.2/0.6	NIPS	Conventional design/ FCT design	Single-aperture/ Multi-aperture
12	2.0/1.0/0.7	NIPS	Conventional design/ FCT design	Single-aperture/ Multi-aperture
13	3.1/1.8/1.5	NIPS	Conventional design/ FCT design	Single-aperture/ Multi-aperture
14	3.1/1.8/1.5	NIPS	Conventional design/ FCT design	Single-aperture/ Multi-aperture
15	3.2/2.2/1.8	NIPS	Conventional design/ FCT design	Single-aperture/ Multi-aperture
16	3.3/1.1/0.9	NIPS	Conventional design/ FCT design	Single-aperture/ Multi-aperture
17	3.4/2.4/2.0	NIPS	Conventional design/ FCT design	Single-aperture/ Multi-aperture

Suitable Materials

PVDF (Polyvinylidene Fluoride), CA (cellulose acetate), PVC (Polyvinyl chloride), PES (Polyethersulfone), PSF/PSU (Polysulfone), PA (Nylon, Polyamide), PAN (polyacrylonitrile)

FCT Design FCT

We can offer FCT designs that allow the spinneret core to be removed, replacing conventional designs where each spinneret hole cannot be independently replaced or disassembled. If one hole has a quality issue, the entire spinneret traditionally needs repair or scrapping. Our FCT spinnerets are independently designed so each hole can be individually replaced if needed. The FCT 6th-generation spinneret enables independent on/off control of the dope feed for each spinneret core, and the 8th-generation FCT spinneret cores can be changed online within a few minute down to 50 seconds when problems occur,to ensure continuous production without downtime.

Conventional design

FCT design

Customer Membrane Examples

Read More Cases

COOPERATIONACHIEVEMENTS

Things we have accomplished

Trustech hollow fiber mambrane spinneret (2)

FAQ

What is the Non-solvent Induced Phase Separation method?

Non-solvent induced phase separation (NIPS) is a process in which a polymer is dissolved in a solvent to form a homogeneous solution. An extracting agent that is more miscible with the solvent is then added to extract the solvent, forming a two-phase structure where the polymer is the continuous phase and the solvent is the dispersed phase. The solvent is subsequently removed to obtain a new polymer with a specific pore structure.

Company Feature

• Trustech has obvious geographical advantages with great traffic convenience.
• Trustech was founded in With years of joint efforts of all employees, we have constantly expanded the business scale.
• At present, Trustech's products have been sold to many foreign countries.
Our company is committed to providing professional and quality products with affordable prices for customers. Welcome customers in need to contact us, and look forward to establishing a mutually beneficial relationship with you!

we welcome custom designs and ideas and is able to cater to the specific requirements. for more information, please visit the website or contact us directly with questions or inquiries.

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David@Xtrustech.com

About Trustech

Trustech is a China’s leading company that specializes in the research, development, and manufacturing of hollow fiber membrane spinning machine, flat sheet membrane casting machine and hollow fiber spinnerets.

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