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Subsequent offline processes: PTFE impregnation, coating, water-repellent and oil-resistant treatment, and cutting and sewing of filter bags.
Equipment Configuration
Opening and Mixing Unit
Bag opening, multi-bin mixing, coarse/fine carding; High-temperature fibers (PPS/aramid) have few impurities, high precision requirements for fiber blending, strict formula ratio; Fiberglass version requires dust-proof protection.
Feeding and Combing Unit
Pressure cotton box quantification; Double-lap double-filament combing machine, higher uniformity of fiber web than ordinary home textile needle-punching, directly affecting the deviation of air permeability.
Cross-laying Machine
Multi-layer stacking of nets, ensuring that the longitudinal and transverse strength are close, and the filter bag is evenly stressed.
Needle-punching Unit (Core)
Pre-punching + 2 to 4 main needle-punching machines (multiple progressive encryption); The filter material cannot be punched suddenly, otherwise the pores will be blocked and the air permeability will deteriorate; Select filter-specific fine needle; High-end equipped with Fehrer/Dilo needle-punching machine head.
Key Configurations in Later Stage
Heat setting oven: Eliminate internal stress, stabilize size, prevent filter bag from shrinking and deforming at high temperature; Optional carding + polishing: Surface is flat, reduces dust embedding, easy for cleaning.
Online Inspection & Control
Online monitoring of surface density and air permeability (ordinary needle-punching lines generally do not have online air permeability inspection); Cutting edge, storage, automatic winding, PLC full-line linkage; Dust removal system, explosion-proof in high-temperature fiber workshop.
Technical Specifications
Parameter
Specification
Raw Materials
Room temperature PET polyester staple fibers; Medium-temperature acrylic; High-temperature PPS, aramid, P84, PTFE, fiberglass; Fiber length 38–51mm
Finished Product Weight
450–800 g/㎡ (mainstream filter bags are 500, 550, 600 gsm)
Working Width
2.0m / 2.4m
Production Speed
1.5–6 m/min
Production Capacity
180–400 kg/h
Product Characteristics
Three-dimensional pore structure, stable air permeability, high breaking strength, small thermal shrinkage of size; Can be made into water-repellent and oil-resistant, anti-static, and coated filter materials.
Applications
Industrial Dust Removal
Cement plants, steel mills, waste incineration, power plants, chemical pulse dust collectors filter bags
Liquid-Solid Filtration
Chemical liquid filtration, wastewater filter felts
Air Purification
Large-scale ventilation dust removal, powder recovery
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
1986
Total Annual:
10000000USD-15000000
Employee Number:
100~120
Ecer Certification：
Verified Supplier
Changshu Mingyi Non‑woven Machinery Co., Ltd is a supplier specializing in non‑woven machinery, non‑woven fabrics and technical solutions. It boasts an independent R&D team and manufacturing system, adopting China’s leading oven integration technology. With nearly 40 years of exper...
Changshu Mingyi Non‑woven Machinery Co., Ltd is a supplier specializing in non‑woven machinery, non‑woven fabrics and technical solutions. It boasts an independent R&D team and manufacturing system, adopting China’s leading oven integration technology. With nearly 40 years of exper...
