P84 needle felt by the Austria LENZING company, production of P84 fiber (polyamide fibers) by three-dimensional needling, has good resistance to high temperature performance, heat resistance up to 280 ° C, and the P84 fiber cross section is irregular leaf-like, which can greatly improve the filtering effect. The P84 polyimide fiber material is not a hygroscopic fiber filter material (at a relative humidity of 65%, it has a water absorption of approximately 3%). Fiber itself and the hydrolysis resistance, oxidation resistance, the resistance temperature of good, good filtering effect, are widely applicable in concrete stirring, cement, waste incineration, coal-fired boilers, and other complex conditions.
Technical Parameter
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Fiber |
P84 |
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Scrim |
P84 Yarn |
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Weight: g/m² |
550 |
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|
Thickness: mm |
2.0 |
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Final Surface Treatment |
Heat-setting Singeing & Calendering one side |
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Tensile strength: warp/ weft: N/50 mm |
≥800 / ≥1400 |
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Tensile strength: warp/ weft: % |
≤20 / ≤40 |
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Working temperature °C |
260 |
Peak temperature: 280 |
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Heat Shrinkage: 250°C [%] |
1.5 |
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|
Air Permeability: L/m².s@200Pa |
200-300 |
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|
Resistance to abrasion |
Excellent |
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Resistance to Oxidation, lights, etc |
Excellent |
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|
Resistance to alkali |
Excellent |
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|
Resistance to dilute acids |
Excellent |
|
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Resistance to concentrated acid |
Excellent |
|
| Degree of separation/ dust content: mg./ m³ | 20 and below | |
| Quality degrees | Excellent – Good – Medium - Less good – Not recommended (*) | |
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Applications
P84 Filter Bags (also known as polyimide filter bags), renowned for their exceptional high-temperature resistance (continuous operating temperature up to 260℃, short-term tolerance to 300℃), strong resistance to most acids and alkalis, and superior filtration efficiency for fine dust, are widely recognized as a high-performance solution for industries facing medium-to-high temperature, corrosive, and fine-dust filtration challenges.
1
In the waste incineration industry, particularly for municipal solid waste and industrial waste incineration plants, P84 Filter Bags play a pivotal role in flue gas treatment. Incineration processes generate flue gas with temperatures ranging from 200℃ to 250℃, containing corrosive components (hydrogen chloride, sulfur dioxide) and fine dust particles (0.1-5μm) that carry dioxins and heavy metals. Unlike ordinary acrylic or polyester filter bags that degrade under such conditions, P84's high-temperature stability ensures consistent performance, while its fine fiber structure achieves a filtration efficiency of over 99.9% for sub-micron particles. This not only helps incineration plants meet strict emission standards (dioxin levels below 0.1ng TEQ/m³) but also resists acid corrosion, extending the filter bag's service life to 2-3 years-significantly longer than standard PPS bags in similar applications.
2
In the non-ferrous metal smelting industry, such as copper, lead, and zinc smelting, P84 Filter Bags are indispensable for smelting furnace flue gas dedusting. Smelting operations produce high-temperature flue gas (220℃ to 260℃) loaded with abrasive metal oxide dust (copper oxide, lead oxide) and corrosive sulfur oxides. P84's excellent mechanical strength and wear resistance allow it to withstand the impact of abrasive dust, preventing bag breakage and reducing unplanned maintenance downtime. For example, in copper smelting converters, where flue gas contains high concentrations of sulfur dioxide (up to 8%), P84's chemical resistance shields it from acid erosion, ensuring efficient capture of copper-rich dust with a recovery rate exceeding 98%. This not only minimizes environmental pollution but also recovers valuable metal resources, enhancing the economic benefits of smelting enterprises.
3
The power generation industry, especially for biomass-fired and waste-to-energy power plants, relies on P84 Filter Bags for boiler flue gas dust removal. Biomass combustion (e.g., wood chips, straw) generates flue gas at 200℃ to 240℃, containing alkaline ash (potassium, sodium oxides) and fine particulate matter that can clog ordinary filter bags. P84's resistance to alkaline corrosion prevents hydrolysis and structural damage, while its high dust-holding capacity (up to 700g/m²) reduces the frequency of pulse cleaning, lowering energy consumption. In waste-to-energy power plants, where flue gas composition is complex and variable, P84's versatility adapts to fluctuating temperatures and corrosive conditions, ensuring stable dust removal efficiency and compliance with ultra-low emission standards (dust concentrations below 5mg/m³).
4
In the chemical industry, P84 Filter Bags are widely used in processes such as polymer synthesis, chemical fertilizer production, and organic solvent recovery. For instance, in the production of polyethylene terephthalate (PET) or polyamide, high-temperature reactors (220℃ to 250℃) emit fine dust particles and volatile organic compounds (VOCs). P84's high-temperature resistance and chemical inertness (resistant to most organic solvents) allow it to filter dust without reacting with process by-products, maintaining product purity and protecting downstream equipment from contamination. In chemical fertilizer plants, where flue gas contains ammonia and acidic dust, P84's corrosion resistance ensures long-term operation, avoiding filter bag degradation that would otherwise lead to dust leakage and production disruptions.
Furthermore, P84 Filter Bags find applications in the glass manufacturing industry (for glass melting furnace flue gas treatment, withstanding 230℃ to 260℃ temperatures and resisting alkaline dust erosion), the cement industry (for kiln tail and preheater dust removal, adapting to 200℃ to 230℃ temperatures and fine cement clinker dust), and the metallurgical industry (for steel rolling mill dust collection, handling 180℃ to 220℃ temperatures and abrasive iron oxide dust). Their balance of high-temperature resistance, corrosion resistance, and fine-dust filtration performance makes P84 Filter Bags a reliable, cost-effective choice for medium-to-high temperature industrial filtration scenarios where standard filter materials fall short.
Workshop
Filter Material Workshop
Relying on the mature production line layout and efficient production management model, the Filter Material Workshop has a strong annual production capacity of 3 million square meters of needle-punched felt filter materials. This capacity not only fully meets the production needs of the Filter Bag Workshop and realizes the efficient connection of the "filter material - filter bag" vertical production chain, but also can meet the filter material supply needs of large-scale dust removal projects in industries such as electric power, iron and steel, and cement, providing solid production capacity support for the enterprise to undertake bulk orders.
Bag Workshop
The workshop has established a complete production data traceability system. For each batch of filter bags, information such as raw material source, fiber ratio, sewing parameters, and test results is recorded. The sampling rate is not less than 5% and no less than 10 pieces per batch, and all data is kept for a period not shorter than the service life of the product. This full-process traceability mechanism provides a reliable basis for subsequent product maintenance and quality problem investigation.
Bag Cage Workshop
The workshop focuses on technological optimization and detailed control in the production process. The wire drawing link adopts the cold drawing process to ensure the uniform diameter and qualified strength of the metal wire; the welding link adjusts the welding temperature and time through an intelligent temperature control system to avoid skeleton deformation caused by excessive temperature; the spraying link uses epoxy resin powder coating, which forms an anti-corrosion coating with a thickness of 60-80μm after high-temperature curing at 200℃, extending the service life of the skeleton by more than 30% in humid and corrosive environments.
Enterprise honor
Safety production is related to the interests of the enterprise and the safety of employees. As a source manufacturer with standardized production in Guangdong Province, we attach great importance to safety management and have won a number of honors in the field of safety production in Guangdong Province.
We have been awarded the "Advanced Unit in Safety Production in Guangdong Province", "Demonstration Enterprise in Safety Culture Construction in Guangdong Province" and other honors, and have passed the occupational health and safety management system certification. We have established a complete safety production management system, equipped with professional safety protection equipment, and regularly carried out safety training and emergency drills to ensure the safety and stability of the production process. These honors are the recognition of our safety management level and the embodiment of our responsibility for employees and society in Guangdong Province.
Package
Different customers have different product uses, warehousing conditions and transportation distances, so their requirements for packaging are also different. Based on customer needs, our company provides comprehensive customized packaging services to tailor exclusive packaging solutions for customers to meet diverse protection and use needs, and can also combine the product characteristics of different filter bag types (such as sewn filter bags and hot-melt filter bags) to adjust the packaging plan.
According to customer needs, we can customize packaging materials (such as ordinary cartons, thickened cartons, solid wood boxes, customized iron frames), packaging sizes (adapting to filter bags and cages of different specifications), and protection levels (basic moisture-proof, enhanced moisture-proof, impact-resistant protection). For customers with long-distance transportation needs, we can upgrade the packaging configuration, add buffer layers and reinforce the outer packaging to improve impact resistance; for customers with humid warehousing environment, we can add moisture-proof desiccants and strengthen sealing treatment; for customers with brand logo needs, we can print customer brand logos, product information and other content on the packaging, turning the packaging into an auxiliary tool for brand promotion. No matter what special packaging needs you have, we can accurately adapt and provide personalized customized services.
Transportation
Different customers have different product usage scenarios, transportation distances and protection requirements, so their requirements for transportation and shipping are also different. Based on customer needs, our company provides comprehensive customized transportation services to tailor exclusive transportation solutions for customers to meet diverse transportation needs.
According to customer needs, we can customize transportation methods (such as special vehicle direct delivery, logistics distribution, air transportation, railway transportation), transportation protection levels (basic protection, enhanced protection, professional shock absorption protection), and delivery time (ordinary delivery, urgent delivery, scheduled delivery). For customers with long-distance and large-batch transportation needs, we provide bulk transportation solutions, optimize loading plans, reduce transportation costs, and ensure timely delivery; for customers with high requirements for product protection (such as precision filter bags, special-coated cages), we upgrade protection measures, add buffer layers, strengthen fixing, and arrange special personnel to follow up the whole process. For customers who need to deliver goods in batches, we formulate phased delivery plans, deliver products according to the customer's production schedule, and ensure the continuity of the customer's production.
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