Tobacco filter machine parts: Molins PM5 and Hauni AF series guide

Tobacco Filter Rod Machine Parts: Molins PM5 and Hauni AF Series Guide

Filter rod making machines — such as the Molins PM5 and the Hauni AF series (AF2, AF3, AF4, AF-KDF) — are specialized production lines that convert acetate tow into cigarette filter rods. These machines operate at speeds up to 600 meters per minute of filter rod output and require dedicated spare parts management. This guide covers the critical consumables and wear parts for both platforms.

Molins PM5 Filter Maker Parts

The Molins PM5 is a cam-driven filter rod maker capable of producing 400–500 m/min of filter rod. Key spare parts include:

Tow Opening and Plasticizer Application

• Tow band guides: P/N PM5-TBG-100 — ceramic-coated steel, 6000-hour service life
• Plasticizer spray nozzles: P/N PM5-PSN-200 — replace at 2000-hour intervals or when spray pattern becomes uneven
• Plasticizer pump seals: P/N PM5-PPS-300 — Viton seals, replace annually
• Air knife assembly: P/N PM5-AK-400 — blade gap should be set at 0.3 mm for standard tow

Rod Formation Section

• Garniture tape (PM5): P/N PM5-GT-500 — PTFE-coated aramid, 33 mm × 1650 mm, replace at 2500 hours
• Garniture tongue: P/N PM5-GTN-600 — wear surface is the primary rod quality factor, inspect monthly
• Compression roller: P/N PM5-CR-700 — pair of polyurethane rollers, replace at 4000 hours

Cutting Section

• Cutting knife (HSS): P/N PM5-CK-800 — 28° edge, 1.5 mm thickness, 500-hour life
• Cutting knife (carbide): P/N PM5-CK-800C — 1800-hour life, requires diamond resharpening
• Anvil roller: P/N PM5-AR-900 — hardened tool steel, 8000-hour life, re-grindable twice
• Sharpening stone: P/N PM5-SS-1000 — replace every 600 hours (for HSS) or 2000 hours (for carbide)

Hauni AF Series (AF2/AF3/AF4/KDF) Parts

The Hauni AF series represents the most common filter rod maker platform globally. Models range from the older AF2 to the current KDF 6. This section covers parts common to multiple generations and model-specific differences.

Filter Plug Wheels

The plug wheel is the most expensive consumable component on filter rod makers. It carries the cut filter rods through the final processing stages. Key maintenance points:

• Inspection frequency: monthly — check for plug groove wear, vacuum port blockage, and surface damage
• Recommended replacement: when groove depth exceeds 0.5 mm from original spec or when vacuum loss exceeds 15%
• Material options: anodized aluminum (standard), hardened steel (high-volume lines), polyurethane-coated (low-noise)
• ZTLibre compatibility: we manufacture plug wheels for all AF series and PM5 models, with hard-anodized surfaces that last 30% longer than standard

Garniture Tapes for Filter Rod Machines

Filter rod garniture tapes operate under different conditions than cigarette maker tapes. They handle acetate tow with plasticizer, which creates a chemically active environment.

• Standard material: PTFE-coated aramid fabric
• Upgrade option: FEP-coated fiberglass for chemical resistance in high-plasticizer environments
• Width options: PM5 (33 mm), AF2/AF3 (30 mm), AF4/KDF2 (35 mm), KDF 6 (40 mm)
• Tension specification: 40–60 N for AF series, 35–55 N for PM5

Cutting Blades for Filter Applications

Filter rod cutting blades face unique challenges: they cut through compressed acetate tow rather than tobacco, which generates different wear patterns.

• PM5 cutting blades: single-edge bevel, 28° angle, HSS M2 or carbide GT-15H
• AF series cutting blades: single-edge bevel, 25° angle, HSS M42 or carbide GT-20K
• KDF 6 cutting blades: dual-edge reversible design, 28° angle, carbide GT-20K standard
• Edge quality requirement: surface finish Ra ≤ 0.2 µm for clean rod ends

Recommended Spares for a Single Filter Line

For a typical installation with one filter rod maker feeding two cigarette makers, we recommend keeping:

• 2× garniture tapes (one installed, one spare)
• 4× cutting knives (two HSS + two carbide, or four carbide)
• 1× spare sharpening stone
• 1× spare garniture tongue
• 1× plug wheel (for emergency replacement)
• 1× air knife blade set

ZTLibre supplies Molins PM5 and Hauni AF/KDF series filter rod maker parts from stock in our Toronto facility. Contact us with your machine serial number for a personalized parts compatibility report and current pricing.

Plasticizer Application System (PM5)

The plasticizer application system on the Molins PM5 controls the hardness and pressure drop of finished filter rods. Proper maintenance of this system is essential for consistent filter quality.

• Plasticizer pump calibration: the metering pump for triacetin plasticizer should be calibrated weekly. Flow rate tolerance is ±1% of the set point. A 5% error in plasticizer application changes filter hardness by approximately 3% and can push the product outside specification.
• Nozzle cleaning procedure: plasticizer nozzles should be cleaned every 500 hours using a solvent wash (acetone or MEK) followed by compressed air drying. Never use wire brushes on nozzle orifices — the bore geometry is critical for spray pattern uniformity.
• Heated cabinet maintenance: the plasticizer recirculation system maintains the liquid at 30-35°C. The heating element and temperature sensor should be checked quarterly. A 5°C temperature increase reduces plasticizer viscosity and increases application rate.

Hauni AF-KDF Series: Generation Comparison

The Hauni AF filter maker series has evolved significantly across generations. Understanding the differences helps maintenance teams plan upgrades and spare parts procurement.

Custom Applications: Dual-Filter and Multi-Segment

Modern cigarette filter designs increasingly use multi-segment constructions that combine different filtration materials. The Molins PM5 can be configured for dual-filter production with a tandem tow feed system, while the Hauni KDF 6 has dedicated multi-segment capabilities.

• Charcoal segment filters: require special garniture tapes with abrasion-resistant coatings to handle activated carbon particles
• Crinkled paper wrap filters: require modified plug wheel grooves and reduced vacuum levels to prevent paper damage
• Capsule filter production: requires capsule insertion equipment and modified cutting parameters to avoid capsule damage during the cut cycle