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Help CenterNeedle-Punched Filter Cloth Bag for Liquid Filtration in Chemical Processing, Acid-Resistant Polypropylene
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Welcome to Anping County Boli Hardware Wiremesh Products Factory – a trusted manufacturer since 1998, specializing in industrial filtration solutions. Our Needle-Punched Filter Cloth Bag for Liquid Filtration in Chemical Processing is engineered from high-quality acid-resistant polypropylene, offering exceptional durability and performance in harsh chemical environments. With over two decades of experience and annual exports exceeding US$5 million, we are dedicated to delivering reliable filtration products that meet the rigorous demands of global chemical industries.
This filter bag is designed to withstand aggressive chemicals, high temperatures, and continuous operation, ensuring efficient separation of solids from liquids. Whether you are filtering acids, alkalis, or organic solvents, our needle-punched polypropylene cloth provides consistent micron-rated filtration, extended service life, and reduced downtime. Below, we detail the key features, technical specifications, and benefits that make this product a top choice for chemical processing plants worldwide.
Key Features & Benefits
- Acid & Alkali Resistance: Made from 100% virgin polypropylene, the bag resists a wide range of chemicals including sulfuric acid, hydrochloric acid, sodium hydroxide, and more. Perfect for aggressive liquid filtration.
- Needle-Punched Construction: The needle-punched nonwoven technology creates a dense, uniform fiber matrix that traps particles efficiently while maintaining high flow rates. This structure also enhances mechanical strength and prevents fiber shedding.
- High Temperature Tolerance: Operates continuously up to 100°C (212°F) without significant degradation, making it suitable for hot chemical processes.
- Customizable Micron Rating: Available in filtration grades from 1 micron to 200 microns, allowing precise control over filtrate clarity. We can also customize the bag size, shape, and sealing ring to fit your existing housing.
- Easy Installation & Replacement: Designed with a standard ring or snap-band top for quick installation and removal, minimizing downtime during filter changes.
- Cost-Effective: Compared to rigid filter elements, our filter bags offer lower initial investment and simpler disposal. The polypropylene material is also recyclable under certain conditions.
Technical Specifications
| Parameter | Details |
|---|---|
| Material | Polypropylene (PP) – virgin fibers |
| Fabrication | Needle-punched nonwoven, thermally bonded |
| Filtration Grade | 1 – 200 microns (nominal) |
| Operating Temperature | Up to 100°C (212°F) continuous |
| Maximum Differential Pressure | 2.5 bar (36 psi) at 20°C |
| Chemical Resistance | Excellent against acids, alkalis, and many organic solvents |
| Standard Sizes (Diameter × Length) | 4″×14″, 4″×20″, 6″×28″, 7″×32″ (custom sizes welcome) |
| Top Style | Polypropylene ring, snap-band, or flange (customizable) |
Application Areas
This needle-punched filter bag is widely used in:
- Chemical Processing: Filtration of acids, alkalis, solvents, and intermediates in reactors, storage tanks, and transfer lines.
- Pharmaceuticals: Clarification of active ingredients, intermediates, and cleaning solutions.
- Food & Beverage: Filtration of edible oils, juices, and syrups where polypropylene is approved for contact.
- Water Treatment: Removal of suspended solids from industrial wastewater and cooling tower water.
- Metalworking & Plating: Filtration of plating baths, cutting fluids, and chemical etchants.
Why Choose Boli Wiremesh?
Since 1998, Anping County Boli Hardware Wiremesh Products Factory has been a leading manufacturer of filtration products. Our factory is located in Hengshui, Hebei – the hardware wire mesh capital of China. With an annual export value of US$5 – 10 million, we serve markets across North America, South America, Europe, Asia, Africa, and Oceania. Our products are shipped from major ports: Tianjin, Qingdao, Shanghai, and Foshan, ensuring timely delivery worldwide.
We understand that chemical processing demands reliable filtration. That’s why every needle-punched filter bag undergoes strict quality control – from raw material inspection to final dimensional checks. Our team can also customize the bag design to match your specific housing, including different ring types, gaskets, and handle straps. Whether you need a standard bag or a special shape, we provide customizable solutions to meet your process requirements.
Backed by decades of manufacturing expertise and a strong supply chain, we offer competitive pricing, fast lead times, and dedicated after-sales support. Contact us today to discuss your filtration needs – we are ready to provide samples, technical data, and volume pricing.
Frequently Asked Questions (FAQ)
-
Q: What is the maximum temperature this filter bag can withstand?
A: The polypropylene needle-punched bag is rated for continuous use up to 100°C (212°F). For higher temperatures, we recommend exploring other materials like polyester or Nomex, which are available upon request. -
Q: Can I use this bag for strong acids like concentrated sulfuric acid?
A: Yes, polypropylene exhibits excellent resistance to many acids, including sulfuric acid, hydrochloric acid, and phosphoric acid. However, performance depends on concentration and temperature. Please consult our technical team for specific chemical compatibility data. -
Q: What micron sizes are available?
A: We offer filtration grades from 1 micron to 200 microns nominal. The actual retention efficiency may vary depending on the particle shape and operating conditions. Custom micron ratings are also possible. -
Q: Do you provide custom sizes and ring types?
A: Absolutely. We can manufacture filter bags in any diameter and length, with top styles including PP ring, snap-band, flange, or plain open end. Simply provide your housing dimensions, and we will produce a matching bag. -
Q: How long is the lead time for standard orders?
A: For standard sizes, lead time is typically 7–15 days after order confirmation. For custom orders, it may be 15–25 days depending on quantity and complexity. Expedited shipping is available. -
Q: Is this filter bag reusable or disposable?
A: These bags are designed for single-use or limited reuse depending on the application. After use, they can be disposed of as plastic waste. Some customers may clean them, but fiber degradation may occur. We recommend using fresh bags for critical filtration. -
Q: What is the minimum order quantity (MOQ)?
A: MOQ is typically 100 pieces for standard sizes. For custom sizes, MOQ may be higher. We also accept sample orders for testing purposes. -
Q: Do you offer samples for testing?
A: Yes, we provide free samples (shipping cost may apply) for evaluation. Please contact us with your requirements, and we will arrange sample delivery.
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