Product details of the wet spinning
Quick Detail
The materials of Trustech wet spinning are good quality and its design is appealing. A quality circle has been organized to detect and solve any quality issues during the production, effectively guaranteeing the quality of the product. Specialized in R&D and production of wet spinning, Shanghai Trustech Technology Development Co., Ltd. has overwhelming advantages to be reliable supplier.
Product Description
Trustech guarantees Spinning Machine,Hollow Fiber Spinneret,Gear Metering Pump to be high-quality by carrying out highly standardized production. Compared with other products in the same category, it has the following advantages.
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 Information
With years of development, Shanghai Trustech Technology Development Co., Ltd. has demonstrated strong competitive edge in designing and manufacturing wet spinning in the industry. While cultivating its own R&D team, Shanghai Trustech Technology Development Co., Ltd. also actively cooperates with many research institutes. Shanghai Trustech Technology Development Co., Ltd. strive to provide customers with the best wet spinning. Inquire now!
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About Trustech