Bruckner finishing systems scale new peak in perfection | ITMA 2007 | Munich | Special Focus

Special Focus

ITMA – INTERNATIONAL EXHIBITION OF TEXTILE MACHINERY
13 – 20 September 2007 | New Munich Trade Fair Centre
a s p e c i a l f o c u s

ITMA 2007 - Exhibitors Gallery

Bruckner finishing systems scale new peak in perfection

Infrared-pre-dryer guarantees best dyeing results thanks to the innovative Bruckner concept.

In dyeing processes the dyeing padder, the radiation dryer and the Hotflue do considerably influence the dyeing result. In the field of pre-dryers, the systems supplier Bruckner offers the particularly efficient infrared gas pre-dryer POWER-INFRATHERM. The innovative technology concept ensures reproducible and homogeneous dyeing results. POWER-INFRATHERM can be used in addition flexibly in thermosol processes and for the finishing of technical textiles.

Immediate readiness for production and high reliability

Bruckner uses in this infrared gas radiator special metal fibre burners. Within a few minutes after the start they reach the desired process temperature with absolute uniformity across the complete fabric width. This guarantees constant and migration-free drying conditions for the complete batch.

In case of an unplanned fabric stop, the radiators cool just as rapidly so that the fabric web cannot burn. The special gas/air mixture preparation concept used by Bruckner allows -- depending on the requirements -- a continuous adjustment in the infrared temperature range between 500°C and 900°C.

Bruckner's POWER-INFRATHERM infrared pre-dryer ensures immediate readiness for production and a just as fast cooling after unplanned fabric stops.

Crease-free fabric passage and uniform migration-free drying

Thanks to the modular concept, the compact construction with short vertical fabric passage ensures a crinkle-free cloth run. The large volume exhaust air lock ensures in addition the uniform, migration-free drying. Several radiator modules can be arranged above each other, which allow to plan the dyeing range specifically for different articles.

The individual segments used as Bruckner's POWER-INFRATHERM radiators have the form of a parallelogram. The metal studs between the segments are turned by 45° to the direction of the fabric run. On the opposite radiator row the turn is to the other side providing for a complete cover of the radiation. The drying intensity is absolutely homogeneous and constant across the width of fabric and the risk of streaky dyed fabric can be excluded.

The special parallelogram shape of Bruckner's radiator segments guarantees an absolutely homogeneous and constant drying intensity across the width of fabric and prevents thus the formation of stripes.

Bruckner's POWER-INFRATHERM radiation dryer is provided with a closed housing. Fresh air only enters through the lower fabric slot, but not in the area of radiators or doors. Undesirable entry of fresh air with detriment to the colouring can thus be excluded.

These radiators stand out for their backfire-proofness and their resistance against mechanical shock and spray water. Another important feature is their long service life and low maintenance.

Latest Bruckner stenter generation - even more efficient and saving more energy

The latest Bruckner POWER-FRAME stenter generation provided with optimised split-flow process control technology meets maximum capacity requirements to achieve optimum production results, high production output and minimum energy consumption. The modular design allows an individual adaptation to the customer's needs.

With a new process technology for air circulation around the fabric, Bruckner improved its split-flow air circulation technology further and made their POWER-FRAME stenter even more efficient. This new technology together with an optimised insulation allows reducing clearly the energy consumption.

Bruckner uses also in the new POWER-FRAME the proven air system alternating in each half of any compartment. Adapted to the process, the upper and lower airflows are controlled separately by two speed-controlled fans in each compartment. This leads to an ideal temperature distribution and to an extremely homogenous and gentle air impingement on the fabric web. This unique system, patented by Bruckner, allows an unlimited finishing even of the most demanding fabric types, for example the heat setting of polyamide with high elasthane contents.

Together with the development of the new POWER-FRAME stenter generation, Bruckner completely re-designed the entry stand and integrated a weft straightener in a space-saving way. The fabric is straightened directly before it is pinned on, which leads to the best straightening results and is thus the technological optimum. The specially developed fabric path possibilities allow a flexible passing of up or down curl edges. The curled edges are then optimally uncurled. This leads particularly with elastic knitwear to the best straightening results.

Direct and indirect heating can be used flexibly and specifically adapted to the customer's needs. Bruckner's specific alternating air circulation with two burners and two high-precision temperature controllers for each 3 m zone leads to an optimum temperature evenness of the air circulating in the burner. Particularly with indirect gas heating the mixing of flue gas and circulating air in the dryer is impossible. This prevents reliably a yellowing of highly sensitive elastic knitwear finished with a high degree of whiteness.

Depending on the process, a connection to the integrated Bruckner ECO-HEAT heat recovery allows energy savings of up to 30%. The costs of the heat recovery system pay back within short time and the reduced energy consumption leads to a higher profitability of the stenter.

Bruckner put on the market a worldwide unique universal non-stop batcher with completely new batching technology. This batcher allows even with high production speeds the non-stop batching of highly elastic knitwear on the POWE-LINE stenter. This allows not only to batch a low-tension fabric roll with straight edges but also to increase the overall efficiency of the line to more than 95% by changing the fabric roll without standstill. Excess heat setting of the fabric is thus prevented and there are no more machine downtimes during batch exchanges.

Connecting the stenter to a user-friendly process visualisation system ensures a fast reproducibility of production data. A special software for efficient styles and recipe administration ensures the uniform fabric quality.

Hall C3, Stand 313/514

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