PTFE film is made of polytetrafluoroethylene dispersion resin, premixed, extruded, calendered, bidirectional stretching and other special processes of the production of microporous film, divided into clothing film, Puwei waterproof film, filter film, purification film.
4. The cross section of the membrane is a network structure, and there are very complex changes in the three-dimensional structure of the holes, such as network connectivity, hole inlaid sleeve, and channel bending, etc. There may be a number of microholes to form a channel, or a microhole may be connected with a number of channels.
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Introduction and microstructure of PTFE membrane
PTFE film is made of polytetrafluoroethylene (PTFE) as raw material by special process, calendering, extrusion, bidirectional stretching and other methods of microporous film.PTFE membrane can be divided into clothing membrane, air filtration membrane, air purification membrane.PTFE film has fibrous microporous structure, porosity is more than 85%, there are 1.4 billion micropores per square centimeter, pore size range 0.02μm -- 15μm.
The main structure
1. The surface morphology of PTFE microporous film is a spider mesh microporous structure.Pore is formed between the microfibers, and the direction of microfibers is basically parallel to the stretching direction.The junction of the fiber bundle is a node, which is formed by the entanglement of many microfibers.
2.PTFE membrane is an asymmetrical membrane, and there are differences in micropore size between the positive and negative sides of the membrane.
3. The cross section micropore size of the membrane is larger than that of the surface micropore size, and the vertical and horizontal micropore size is also different, and the longitudinal micropore size is larger than the transverse micropore size.
NINGBO ZHENHAI BOLANG METAL PRODUCT FACTORY, established in 2001, has built a strong reputation in the manufacturing industry. The company specializes in high-precision CNC machining and offers a wide range of services including auto parts, agricultural components, machinery parts, lighting fixtures, and hardware fittings. With extensive experience in various casting processes such as pressure casting, sand casting, investment casting, and gravity casting, we work with a variety of materials like aluminum alloys (A380, A390, ADC12, YL102, A356), 6000 series aluminum extrusions, zinc alloys, iron, and copper.
Our products are primarily exported to countries across North America, Europe (including the UK, Germany, Italy, Belgium), and Asia (such as Japan and South Korea). We are proud to have achieved the ISO/TS16949 quality management certification, ensuring our commitment to excellence.
Below is a detailed specification of our product:
- **Model No.:** 349
- **Machining Fixture:** Fixture Design and Fabrication
- **Software Applied:** PRO/E, Auto CAD, Solid Work 2013, Ug
- **Trademark:** Customized
- **Transport Package:** Carton, Environmental Pallet
- **Specification:** Customized
- **Origin:** Ningbo
- **HS Code:** 7616991090
| Material | ADC-12 |
|----------|--------|
| Cavity Number | 1 |
| Process Technology | High Pressure Die Casting |
| Product Dimensions | Customized |
| Casting General Tolerance | GB-CT4 |
| Surface Finish | Polishing, Vibratory Deburring, Anodizing, Powder Coating, Painting, etc. |
| Flow Processes | Die Casting, Degating, Polishing, Vibratory Deburring, Machining, CNC Machining by Machining Center, Cleaning, Powder Coating, Packing, Shipping |
| Control Measure | Incoming Material Test, First Article Inspection, Routing Inspection, Final Item Inspection, and Outgoing Quality Control |
| Inspection Equipment | CMM, Caliper, Plug Gage, Spectrograph, Pneumatic Measuring Tool, etc. |
| Application | Machinery Parts |
| Certificate | ISO/TS16949:2009 |
| Lead Time | 30-35 Days |
| Trade Term | FOB Ningbo |
### Frequently Asked Questions
**Q1. When can I get the price?**
A: We usually provide a quotation within 2-3 days after receiving your RFQ. If there are any questions about the drawings, we will respond within 2 days for clarification.
**Q2. How long is the lead-time for mold?**
A: The lead time depends on the size and complexity of the mold. Typically, it takes 35-45 days.
**Q3. I don’t have a 3D drawing, how should I start the new project?**
A: You can send us a sample, and we will help you create a 3D model accordingly.
**Q4. Before shipment, how to ensure the product quality?**
A: We follow a strict development process. During sample production, we can produce according to the PPA. After PSW approval, we ensure the final product meets all requirements.
With a strong focus on quality, innovation, and customer satisfaction, NINGBO ZHENHAI BOLANG METAL PRODUCT FACTORY continues to grow and meet the demands of international markets. Whether you're looking for custom parts or need assistance with design and prototyping, we are here to support your project from start to finish.