Company Advantages
· The raw material of Trustech wet spinning spinneret goes through a rigorous selection procedure.
· The product keeps operating smoothly throughout its lifetime.
· To ensure that the wet spinning spinneret's quality, Trustech has put large investment to meet customer requirements.
Typical application scenarios
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
Product Parameters
|
Brand |
Trustech |
Application |
Dual layer |
| Material | SUS304, SUS630, SUS316L | Holes/Pack | 1 or 4 |
| Dope inlet Thread | G1/8, BSP1/8, NPT1/8 | Minimum membrane OD | 1.3mm |
| Bore liquid inlet thread | G1/8, BSP1/8, NPT1/8 | Customize thread | Yes |
| Precision | ±0.002mm | Concentricity | 0.003mm |
| Design | Conventional design | Connections | Standard |
| Viscosity application | 1000-300000cp | Roughness | Ra0.2-0.8 |
| Solvent | DMAC, DMF, NMP | Temperature | 150℃ |
Suitable Materials
PVDF (Polyvinylidene Fluoride), CA (cellulose acetate), PVC (Polyvinyl chloride), PES (Polyethersulfone), PSF/PSU (Polysulfone), PA (Nylon, Polyamide), PAN (polyacrylonitrile)
Structural Features
Dual layer dope spinneret is challenging to manufacture, requires high concentricity, and, when necessary, must withstand high temperatures and solvents such as DMAC and NMP.
We offer double material liquid hollow fiber membrane spinnerets used for producing composite membranes. The concentricity of these spinnerets are 0.003mm. The composite film covers a dense separation layer on the porous base film. The support layer and the separation layer use different materials, which makes it easy to obtain a separation membrane with a high separation function, high permeation flux, excellent resistance to pollution and an outstanding strength. We can also make films for specific functions using this process.
Common Specifications
| No. | General Specification | Application | Design Type | Type |
| 1 | 1.6/1.3/1.1/0.7/0.4 | Dual layer | Conventional design | Single-aperture/ Multi-aperture |
| 2 | 1.7/1.3/1.0/0.6/0.3 | Dual layer | Conventional design | Single-aperture/ Multi-aperture |
| 3 | 1.8/1.2/0.9/0.7/0.4 | Dual layer | Conventional design | Single-aperture/ Multi-aperture |
| 4 | 1.8/1.4/1.1/0.7/0.4 | Dual layer | Conventional design | Single-aperture/ Multi-aperture |
| 5 | 1.9/1.6/1.3/0.7/0.4 | Dual layer | Conventional design | Single-aperture/ Multi-aperture |
| 6 | 1.94/1.3/0.9/0.7/0.3 | Dual layer | Conventional design | Single-aperture/ Multi-aperture |
| 7 | 2.1/1.6/1.3/0.8/0.5 | Dual layer | Conventional design | Single-aperture/ Multi-aperture |
| 8 | 2.2/1.9/1.6/1.1/0.8 | Dual layer | Conventional design | Single-aperture/ Multi-aperture |
Customer Membrane Examples
FAQ
Company Features
· So far, Shanghai Trustech Technology Development Co., Ltd. has developed into a leading manufacturer of wet spinning spinneret.
· Shanghai Trustech Technology Development Co., Ltd. boasts its strong technology capability. There are many authoritative awards for Shanghai Trustech Technology Development Co., Ltd.'s technology.
· We ensure our impact on the environment is minimized when achieving our business growth. We ask our staff to conduct all activities in a sustainable manner.
Product Details
More detailed information on wet spinning spinneret is shown for you at below.
Enterprise Advantages
Trustech has advanced production equipment and comprehensive management system. We also have experienced management teams and technical teams with great technical ability.
Adhering to the service concept of 'customer is superior, service is first-class', our company is guided by the actual needs of consumers and wholeheartedly provides sincere service for consumers.
Our company will continue to pursue perfection and excellence, and strive to become an industry head respected by the society, so as to lead the industry to be healthy and sustainable.
Our company was founded in After years' development, we have broadened our business scope and accumulated a wealth of production experience and professional technical knowledge.
Our products are sold in many cities and regions at home and abroad. While creating profits for our company, they have also expanded the market in many regions, and won a lot of praise from consumers.
About Trustech