A continuous decatizing machine runs fabric continuously through a steam chamber to set it in dry finishing. Steam makes the fibre structure briefly plastic, and cooling right after locks that in, fixing the lustre and handle that pressing leaves only temporarily. QL's WPF-LXZN Continuous Decatizing Machine, equipped with proprietary Decatizing Uniformity Technology, serves this setting station on worsted, woollen, and wool/blend knit lines.
Where this machine sits in the line, and what comes before and after
WPF-LXZN is the continuous option at the final decatizing station. Woven routes arrive after WPF-ZW straightening → WPF-LTYS pin-chain pre-shrinking, or WPF-WDYS belt pre-shrinking → WPF-ZW straightening. The knit route goes directly from WPF-WDYS to decatizing. WPF-TG polishing is an optional earlier station on woollen routes, not a fixed predecessor on every route.
Alternatives are WPF-JXZN-MAX batch decatizing, WPF-LXZN-P continuous pressure decatizing or kier decatizing. Optional airflow softening can follow before final inspection, rolling and packing. WPF-LXZN may also provide pre- or post-treatment around batch decatizing and combine with QL pre-shrinking equipment for the actual process.
What it changes in the fabric, top or yarn: handle, dimensional stability, lustre, cleanliness
The WPF-LXZN leaves fabric with a smooth, full, well-rounded handle: fabric runs continuously through the steam-rise chamber, and the heating banks and cooling-suction system that follow lock that plastic state in. Typical fabrics are wool, wool blends, and heavier knits. Counter-pressure light-tension feed preserves elastic recovery; ultra-low-tension delivery control targets knitted fabrics. The heating bank inside the chamber prevents condensation marks, keeping colour and batch results even. The two-stage tension control keeps dimensions stable too; cleanliness isn't a dimension this station addresses.
Why this machine is necessary: what happens without it, or with another method
WPF-LXZN organises decatizing around continuous fabric entry and delivery. It suits continuously connected finishing and offers a continuous treatment path for fringed scarves and shawls. QL Decatizing Uniformity Technology supports full-width adjustment; a heating bank inside the steaming chamber controls condensation, while separate entry and delivery tension control coordinates treatment and transport.
Review the fabric, setting objective and production organisation with QL. WPF-JXZN-MAX provides wrapped batch treatment, WPF-LXZN continuous treatment, and WPF-LXZN-P combines pressurised steam with continuous fabric flow.
Setting the parameters: temperature, tension, speed, time
Operating speed runs continuously adjustable from 10 to 35 m/min. Steam is supplied through a proportional valve at a constant 4–5 bar, metered automatically. Tension runs in two independent stages: counter-pressure light tension on entry to minimise stretch, and ultra-low tension on delivery, aimed at knitted fabrics. Fabric temperature inside the steam chamber and dwell time there are set by trial on each fabric type; ask QL for the process data sheet. Where deeper setting is needed, a fabric humidifying unit is available as an option.
The questions customers ask most
- Where do shade variation across the width and end-to-end variation come from, and why is a continuous machine prone to them?
- Can silk, synthetic, and spandex-blend stretch fabrics run on a continuous decatizing machine?
- How long does the decatizing effect hold — will it relax again once made into a garment?
- Where should decatizing sit in the finishing sequence, and can that be changed?
- How does a continuous decatizing machine work?
- With fabric moving continuously and less steam contact time, does continuous decatizing under-steam the fabric compared with an old-style decatizing tank?
Which process routes it appears on
Read WPF-LXZN in the context of these routes: worsted top-dyed, worsted piece-dyed, woollen stock-dyed, woollen piece-dyed, wool-blend knitted fabric. Follow each branch to understand the equipment choice; a required process does not mean every quality uses the same model.
Give QL the fabric or top sample, existing upstream and downstream stations, and target finish to review configuration and process connections together.