High-precision full-auto knife pleating machine for filter paper pp/pet/ PTFE /composite media
Full Automatic Knife Filter Paper Pleating Machine | Adjustable Pleat Height 20–120mm / 20–300mm for Filter Media Factory Production
High-precision full-auto knife pleating machine for filter paper, fiberglass, PTFE composite media. Two pleat height options: standard 20–120mm & deep pleat 20–300mm. PLC servo control, continuous unmanned production for auto, industrial, HEPA filter factories. Stable pleat forming, low failure rate, CE certified.
Order(MOQ) :
1setPayment :
T/TProduct Origin :
Anhui ChinaShipping Port :
ShanghaiLead Time :
28 work daysWeight :
980kg
Product categories
Our full automatic knife pleating machine is dedicated industrial folding equipment specially developed for all types of filter paper and composite filtration media. Adopting upper & lower reciprocating knife forming technology + full servo PLC intelligent control system, this pleater delivers uniform, wrinkle-free, dimensionally stable filter pleats with zero manual folding intervention.
We supply two standard height specifications to cover different filter manufacturing demands:
Standard Model: Adjustable pleat height range 20 mm – 120 mm, ideal for conventional automotive air filters, fuel filters, hydraulic filters, medium-efficiency ventilation filters
Deep Pleat Custom Model: Adjustable pleat height range 20 mm – 300 mm, designed for large industrial dust filters, heavy-duty machinery filters, high-capacity HEPA/activated carbon filter elements
All pleat depth parameters are digitally adjustable via 10-inch touch screen within seconds, no mechanical disassembly required, greatly shortening model changeover time for filter factories.
Equipped with automatic air-expansion shaft raw paper unwinding, constant tension correction, constant-temperature preheating, knife pleat forming, automatic counting and finished pleat stacking. One operator can manage 2–3 production lines simultaneously, cutting labor cost by over 60% compared with semi-automatic folding machines.
Two core height versions: 20–120mm for regular filter batches; extended 20–300mm deep pleat version for large-volume, high-dust-load filter cartridges. Pleat spacing, folding speed and heating temperature are all programmable on HMI touch panel, supporting M-type, W-type, continuous wave pleat molding.
Hard alloy wear-resistant folding knives with anti-scratch coating avoid tearing thin fiberglass, PTFE and microfiber filter paper. Servo-driven knife reciprocation ensures ±0.15mm pleat height tolerance, consistent filter surface resistance drop and stable filtration performance for finished filter elements.
This knife pleating machine processes most mainstream filter raw materials widely used in filter factories:
Wood pulp filter paper for auto air / oil / fuel filters
Glass fiber filter media for HEPA, HVAC high-efficiency filters
Activated carbon composite filter paper
PTFE microporous membrane composite non-woven fabric
Multi-layer composite filter media
Heavy-duty carbon steel welded frame with anti-rust spray coating; full safety protection cover, emergency stop button and safety light curtain to meet EU CE safety standards. Low running noise, stable operation under 24-hour continuous factory production without frequent maintenance.
The whole automatic pleating workflow runs sequentially without manual intervention:
Raw Material Loading: Install filter paper roll on air-expansion unwinding shaft, automatic tension control prevents paper deviation
Preheating Shaping: Constant-temperature heating section softens rigid filter paper to eliminate pleat rebound after folding
Digital Parameter Setting: Input target pleat height (20–120mm / 20–300mm), pleat quantity and production speed on touch screen
Knife Reciprocating Pleating: Upper and lower folding knives alternate to form neat continuous filter pleats
Cooling & Shaping: Cooling conveyor fixes pleat shape to avoid rebound deformation
Automatic Counting & Stacking: Finished pleated filter media is counted and neatly stacked for downstream gluing, cutting and filter assembly
In filter manufacturing workshops worldwide, this full automatic knife pleating machine serves as the core front-end equipment of filter production lines. Small & medium auto filter factories select the 20–120mm standard model for mass production of passenger car, truck fuel and air filter paper. Large industrial dust treatment, construction machinery and air purification manufacturers adopt the 20–300mm deep pleat version to produce large-size high-flow filter cartridges.
Workshop operation scenes: Raw filter paper rolls are continuously fed into the machine; the servo knife unit quickly folds uniform deep pleats; finished stacked pleats are directly transferred to hot melt gluing machines, inner frame forming machines and cutting equipment to complete full filter element assembly. Factories using this pleating machine achieve 3–5 times higher daily output than traditional manual folding or semi-automatic roller pleaters, with greatly reduced defective filter rates.
| Item | Standard Model (20–120mm Pleat Height) | Deep Pleat Custom Model (20–300mm Pleat Height) |
|---|---|---|
| Adjustable Pleat Height | 20 mm ~ 120 mm (touch screen digital adjustment) | 20 mm ~ 300 mm (extended stroke knife assembly) |
| Max Working Paper Width | 700mm / 1300mm / 1500mm (customizable) | 700mm / 1300mm / 1600mm (wide-width customized) |
| Pleating Speed | 0–220 pleats per minute (variable frequency control) | 0–150 pleats per minute (deep pleat low-speed stable mode) |
| Control System | PLC + 10-inch HMI touch screen, full servo motor drive | PLC + industrial touch screen, heavy-load servo system |
| Heating System | PID constant temperature control (room temp – 200℃) | High-power heating module for thick deep pleat media |
| Power Supply | 380V / 50Hz industrial three-phase power | 380V / 50Hz heavy-load power supply |
| Working Air Pressure | 0.5–0.7 Mpa | 0.6–0.7 Mpa |
| Supporting Materials | Wood pulp filter paper, thin glass fiber, carbon composite media | Thick glass fiber, multi-layer composite, heavy dust filter paper |
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