Multipass stenter frame with fabric feed and delivery on opposite sides S-M

It is a new model of stenter frame joining the advantages of the multipass machine (improved fabric quality and reduced overall dimensions) to the easy operation of the single-pass one (all feed, selvedge gluing and cutting devices are readily accessible and easily kept under control).

It is manufactured in several models according to number of passes and hence fabric content inside the chamber (up to 120 m maximum). Fabrics are consequently processed at lower temperatures than in single-pass stenter frames with definitely better results as far as enhanced appearance, final "handle" and dimensional stability are concerned.

The S-M stenter frame is produced with different useful widths starting from 180 cm up to 320 cm maximum.

A very fine and independent control of the overfeed drum speed ensures a steady fabric overfeed on the nail chain (up to +60% maximum) according to the different selvedge tension. Inlet double-hinge swivel arms prevent any weft distortion.

The S-M stenter frame can comprise 2 chambers, each equipped with its own temperature control: the lower chamber for drying and the upper one for heatsetting.

The outlet cooling system via air blown onto both fabric sides while it is still pinned ensures the best conditions for fabric dimensional stability.

The (optional) automatic filter cleaning ensures a steady performance of the plant. The filters run before a rotating brush inside a vacuum pipe connected with a sucking device and a bag filter outside the machine. The brush rotates in the opposite direction of the filters, thus crumbling the layer of lint which is sucked into the duct and conveyed to the outer filter. Dust and lint cannot therefore fall into the stenter frame. During cleaning, air filtering is carried out by additional filters in a fixed position.

Chains have pins and counter-pins and are equpped with (automatically lubricated) ball bearings to reduce friction against the sliding guides. The pictures show how compact and manifold the plant is.

When the machine stops, an automatic flap stops ventilation onto the processed fabric. However, air goes on circulating through a part og the circuit (fans - gas burners or batteries - filters) thus preventing any marking of the fabric inside the chamber and ensuring minimal re-setting up times.