From the Sector

KARL MAYER launches its RE 4-1, a new Raschel machine for the efficient production of highly elastic textiles. With this newcomer, KARL MAYER is expanding its Elastomeric series and supplementing the established RE 4-1 as part of its two-product line strategy. With the price-performance ratio, the machine fulfils the requirements of the volume business in particular.

A 170″ version of the machine has already been on sale in China for several months. The pre-release got off to a successful start. Encouraged by the feedback from the market, KARL MAYER has developed an RE 4-1 with a working width of 190″ and will be offering both models to its global customers from middle of July 2024.

The RE 4-1 can be ordered with E 28 and E 32 gauges. The 170" version is also available with E 36. The standard equipment includes KAMCOS® 2, batching device 18 E, Carbon fibre technology and N-pattern drive for controlling the guide bars: stitch-forming GB 1 to GB 3 and inlayGB 4. There are also optional features, including sensors for measuring the yarn tension, laser stop, batching device 34 A, LED lighting and an installation kit.

With its technical configuration, the RE4-1 is optimised for the production of elastic and non-elastic standard fabrics, especially for the underwear sector. One of the top products of the Raschel machine with its high productivity and short amortisation time is elastic Power net. This open-meshed, airy fabric has become an indispensable part of the lingerie and clothing sector. It is often used in the wings of bras as well as for inserts in sports leggings, shirts, jackets and swimwear, where it provides delicate control and comfort. Power net can also be found in semi-technical applications, for example as outer and inner pockets for rucksacks and clothing.
In addition to Power net, Raschel Locknit, Sleek net and Satin net are also part of the production repertoire of RE 4-1. The fabrics with a decreasing density from Raschel Locknit to Satin net also play a role in underwear and clothing production. For their production, filament yarn is threaded in the front two guide bars and elastane in the back ones.

Knopf’s Sohn, a contract finisher of technical textiles, has installed a fully automated Montex stenter at its plant in Helmbrechts, Germany.
Knopf’s Sohn is processing technical textiles for the automotive, aerospace, home furnishings and workwear markets, based on wool, cellulose, polyamide and polyester fabrics, along with elastane blends, in weights of 80-800gsm.

The Montex machinery range is constantly being upgraded to meet evolving customer needs for greater automation, ease of operation and energy optimisation. The latest ten chamber line at Knopf’s Sohn, with a working width of up to 2.0 metres, was engineered to specific requirements in order to accelerate the company’s move to fully automatic control of its production, and high scaffolding was required for its installation.

The line benefits from two integrated ECO Booster modules to provide high energy savings. These compact, air-to-air heat exchangers, installed within the roof structure of the line, exploit energy from the exhaust gas to preheat up to 60% of the incoming fresh air entering the stenter.

The use of a single ECO Booster unit has been calculated to save up to 35% in energy costs, based on fixation processes. Fully automatic operation, set at the Monforts Qualitex control unit, ensures there is no additional burden on the machine operator.

The line is powered by Exxotherm indirect heating, which practically eliminates the yellowing which can be experienced during the treatment of certain polyamide and elastane-based fabrics, and is also equipped with a Conticlean circulating air filter system for constant high drying capacity.

Software
The latest Qualitex visualisation software offers operators reliability and easy control with its full HD multi-touch monitor and slider function, dashboard function with individual adaptation to operating states and faster access to comprehensive recipe data management.

With the Monformatic control system, the exact maintenance of the dwell time in combined treatment processes (drying and heat-setting) can be monitored. When the heat-setting point is reached, the fan speed is automatically adjusted, keeping energy consumption fully under control.