Pin-Chain Steaming-Shrinking Machine
WPF-LTYS
Pin-Chain Steaming-Shrinking Machine · Engineered with the QL Anti-Condensate Twin-Steam System
The machine, up close
Full view, guide rollers at the end
Key advantages
- QL Anti-Condensate Twin-Steam System — twin steam ports deliver abundant deep-penetrating steam; a heating bank performs secondary vaporisation and a suction unit instantly evacuates residual vapour; condensate formation is intercepted at source
- Pin-Chain Full-Path Width-Locking — fabric is held on pin clamps from infeed to delivery; width is locked to the process-defined value across the full steaming and cooling cycle, eliminating dimensional drift
- Entry Spreading Roller — pre-conditions un-stentered fabrics, ensuring that fabric enters the pin-clamp zone fully open and flat
- Independent Overfeed System with Reverse-Side Overfeed — warp overfeed is precisely controllable, balancing shrinkage depth with surface flatness
Fabric results (before / after)
Threading diagrams
QL Anti-Condensate Twin-Steam System
- Twin-Port High-Volume Supply — doubled steam delivery enables single-pass penetration of double-faced wool and heavy-weight woolens with uniform shrinkage
- Heating-Bank Secondary Vaporisation — steam remains in vapour state after crossing the fabric; the condensation pathway is severed at source
- Instant Suction Evacuation — vapour does not dwell on the fabric surface; the fabric surface remains free of water marks
Product overview
WPF-LTYS extends the control architecture of pin-chain steaming-shrinking from a single steam-supply axis to a dual-axis configuration covering both steam supply and condensate prevention. Twin steam ports deliver abundant deep-penetrating steam — once the steam has crossed the fabric, a heating bank carries out secondary vaporisation and a suction unit instantly evacuates the residual vapour. Condensate formation is intercepted at source; the fabric surface remains free of water marks.
The chain frame holds the fabric on pin clamps from infeed to delivery — width is locked to the process-defined value across the entire steaming and cooling cycle. This is a process-grade width-locking capability that free-belt steaming-shrinking machines cannot replicate, with structural consequences for garment dimensional stability, batch consistency and downstream-line continuity.
The machine processes worsted and woolen wool, synthetic woven and knitted structures, and cotton-, linen- and elastane-blended fabrics. For high steam-resistance qualities — double-faced wool and heavy-weight woolens — the QL Anti-Condensate Twin-Steam System provides both the elevated steam supply and the water-mark-free finish required for stable processing.
Applications
Key specifications
| Effective Working Width | 1,800 / 2,000 / 2,200 mm |
|---|---|
| Chain Architecture | Pin-clamp chain with stainless steel rails |
| Operating Speed | 30 m/min |
| Steam Pressure | 4 – 6 bar |
| Air Pressure | 8 bar |
| Installed Power | 23 kW |
| Overall Dimensions (L × W × H) | 10,722 × 3,000 × 2,885 mm |
| Control System | Touchscreen + PLC, automatic process control with parameter storage |
Width configuration: the standard working width is 1,800 mm; 2,000 mm and 2,200 mm are available on customer specification. Other parameters scale accordingly.
Optional features
- Setting Drying Chamber — steam-heated drying chamber following the primary steaming-shrinking stage, providing additional dimensional setting; includes anti-release pin-clamp upgrade
- Entry Weft Straightener — corrects weft skew at infeed, working in concert with the entry spreading roller for geometric precision
- Delivery Configuration — plaiter / saddle folder / small-batch winder / large-batch winder
- Anti-Static Delivery Unit — static control for synthetic and blended fabrics
Full configuration notes, the complete feature list and selection advice — put together for your line and sent straight to you.
Request the full technical fileAll technical parameters stated in this document are measured under ideal operating conditions; actual performance may vary with fabric characteristics, process settings and on-site conditions. The manufacturer reserves the right to introduce technical improvements without prior notice.
Other machines for the same station
This station can be done in more than one way. Each suits a different case — choose by your fabric and output.
Pre-owned machines for this station
Pre-owned European machines for the same station — fully rebuilt to order, and upgraded if you wish.
Common problems in dry finishing
Real questions from the mill floor — and how we answer them.
Width drifts on belt-type shrinking — how do I choose between pin-chain and belt-type?
Width control is the dividing line between the two.
What is a steam preshrinking machine for, and why do garment and fabric mills need it?
A steam preshrinking machine releases the latent relaxation shrinkage locked inside a fabric before it leaves the mill, so the cloth will not shrink and distort the first time a finished garment is washed.
Double-face and heavy woollens do not steam through, so shrinkage comes out uneven.
Twin steam ports double the volume delivered, so high steam-resistance qualities — double-faced wool and heavy-weight woolens — are penetrated in a single pass with uniform shrinkage.
Fabric shrinks the first time a finished garment is washed — how do I settle that before it leaves the mill?
Shrinkage depth is set by the independent overfeed system — warp overfeed is precisely controllable, balanced against surface flatness.
How do preshrinking and decatizing relate to each other — can I do just one and skip the other?
Pre-shrinking and decatizing are two sequential steps on the line, not an either-or choice.
Condensate drips onto the cloth during steaming and leaves water marks and shade spots.
Condensate is stopped from forming rather than dried off afterwards.
How is the preshrink ratio adjusted, and what range can it be controlled within?
Preshrink ratio is set mainly through the independent overfeed system — the amount of warp overfeed fed in determines how deep the fabric retracts, working together with steam volume, pressure and suction intensity.
Does the preshrinking machine work by direct steam injection?
Yes — steam preshrinking machines work by direct steam injection through the fabric.
What can the WPF-LTYS do for your line?
Tell us your fabric, weight and output — we will come back with a process proposal and a quotation.