MULTI-LIER STENTER FRAME

This stenter is designed for tentering, drying, heatsetting and curing of all woven textile fabrics used in the wool industry.

If equipped with special pin plates, the stenter is suitable for carbonizing acid-impregnated fabrics.

For processing of knit goods, the stenter frame will have to be equipped with proper selvedge openers, gumming, cutting and suction devices: this latter is our model M.

DESIGN FEATURES

  • High evaporating capacity owing to large fabric content in a reduced volume. The stenter can be supplied with 8, 10 or 12 runs: fabric content varying between 38 metres and 78 metres.
  • Perfect accessibility through large doors which give immediate access to the filters, heat exchangers, fans, chains, a.s.o.
  • Low maintenance requirements. Fans are directly coupled with threephase electric motors. Each driven roll has its own driving inverter motor. No belt driven transmission or mechanical speed variators are installed.
  • AC-Inverter driving motors
  • Overfeeding range from -10% to +40%, adjustable even at standstill via a rheostat. Single selvedge tension adjustable by a rheostat, too.
  • Special edge sensor with dust and waterproof enclosed photocells with mechanical feeler. Hence the combined advantages of positive edge sensing with light barrier and electronic control.
  • Three speed arm displacements via hydraulic jacks controlled by solenoid valves instead of pinion and rack system; hence higher displacement speed due to lower inertia and fewer moving parts.
  • Pneumatic chain tensioning with constant tension.
  • Chains equipped with ball-bearings which absorb the fabric tension forces and allow to use the stenter even with heavy felts. Power consumption and the need for lubrication are kept low due to rolling friction.
  • Furthermore, fabric holding elements are provided with pin plates and pinning counter plates which prevent fabric deepening under all circumstances.
  • Chain rails are formed by a drawn steel section and almost totally enclose the chain.

  • Automatic chain lubrication with adjustable electric programmer: lubricating oil is directly fed to the chain guides and bearings.
  • Air blowing nozzles are fitted close to the chain guides to allow periodical cleaning of both elements and bearings. The nozzles are designed with quick release couplings for connection to the compressed air network of the plant.
  • Large number of air blowing nozzles on both sides of the fabric. These are of the circular jet type, with side plates, which produce an air cushion above and under the fabric.
  • Drying tunnel divided into 2 heating zones: the first one for drying the fabric, the second one for heat setting or drying in case of pure woollen fabrics. The air temperature in each zone can be automatically and independently regulated via electronic temperature regulators.
  • The stenter can be supplied for any of the following heating media:
    • steam
    • thermal fluid
    • gas
    • fuel oil (indirect heating)
    • electricity
  • In all cases the heaters are largely dimensioned and allow a quick rise to working temperature as well as a precise temperature regulation.
  • All external panels are double walled and lagged with rock wool. They are designed for a maximum working temperature of 250° C.
  • The stenter can be fitted with a large number of accessories as per attached list.
  • Inlet frame designed to receive fabric in folds, the inlet frame is provided with braking rods, automatic centering by means of pneumatically operated roller frame with electronic photo-cell control.
  • Skew weftstraightener built in the inlet frame, that is manually controlled and consists also of a roller frame which is pneumatically operated.
  • The exit end of the stenter is supplied with a plaiter. The pull roll speed can be adjusted by means of a pneumatic compensator thus allowing bow weft correction.
  • A suction drum cooler can be installed before the plaiter. This device is particularly recommended when blankets have to be cooled down for downstream operations such as raising a.s.o.