Retech: The heat is on…
technology, precise temperature control and lowest energy
consumption – Retech has the solution for synthetic fiber
Retech is the industry-leading expert in
technology for man-made fiber processing. Accurate control of
both temperature and speed are essential for flawless fiber
drawing and yarn production. Sophisticated technologies offer
virtually unlimited possibilities for both current and future
applications across multiple industry sectors. Visitors to ITM
2020 can discover more about the power and precision of Retech
Heat is the critical factor in the
production of synthetic fibers and yarns. This involves two
challenging requirements: applying exactly the correct
temperature for the material being produced; and maintaining
this level continuously throughout the process. Any deviations
will lead to unevenness in the yarn – and in some cases to
irregularities in the resulting fabric which become apparent
only after the next production step (e.g. dyeing). Retech has
the know-how to meet these heat-related challenges to ensure the
production of faultless yarns.
Heated godet - Swiss made by Retech.
From bikini to
tire cord to protective clothing
Each Retech godet roll incorporates a
sophisticated induction heating system, guaranteeing that any
temperature deviation will be within no more than one degree
Celsius. The second core component, the motor for drawing the
roll, operates with equal precision. The complex production
process for man-made yarns depends on the correct combination of
heat and speed within each godet, interacting with all the
godets in the line. High-tech hardware and sophisticated
software allow the operator to manage all settings centrally.
The system offers comprehensive data analysis, triggering alarms
immediately any tolerance limits are exceeded. Securing reliable
yarn quality in this way is necessary to earn the trust of
users, especially when critical products such as life-protection
clothing are involved.
Retech godets have a wide range of
applications. Many of these fields call for particular
properties provided by specially-engineered technical yarns,
such as those for sportswear, protective clothing, medical and
automotive applications, including tire cord.
Ralph von Arx, CEO at Retech.
“Some of tomorrow’s applications we don’t
even know today. It is our goal to develop technologies
fostering the creativity of yarn engineers and developers of new
applications,” says Ralph von Arx, CEO at Retech. He is
regularly contacted by companies presenting new challenges and
problems to be solved. In this respect, Retech is a true
solutions provider, transforming customer inputs to devise
equipment producing the required effect.
Godets able to heat materials up to 400°C
are designed for high-end applications. Retech godets are unique
in featuring the highest temperature capability on the market.
They also offer outstanding performance in terms of precision
within 0.5°C – guaranteed by the established Retech temperature
controller – and repeat accuracy from 1 to 100 godets. By the
way: yarns for bikinis are produced with a godet temperature
range from 100° to 250°C, while Retech’s cost-efficient
production benefits are equally appreciated for this end-use.
The sheer breadth of applications covered
by Retech means its technology surely achieves record-breaking
proportions. Drawing speeds, for instance, can range from an
extremely slow 0.1 m/min to ultra-fast rates of 6,000 m/min, to
suit the needs of the materials and applications. Reliability
and accuracy from Retech godets ensure the quality levels needed
for consistent performance in vehicle tires and airbags, as well
as specialty end-uses such as monofilament-based contraceptive
rings for women.
“Retech godets are not off-the shelf
goods. They are developed according to customer needs and
budget,” says von Arx. Machine manufacturers and yarn producers
cooperate closely with development work and Retech engineers
design the technical specifications for the equipment required.
“Customers appreciate our professional and reliable cooperation
and also share sensitive data with us for the best outcome,”
says von Arx. Retech also maintains partnerships with
universities and institutes, keeping in touch with innovations
and trends in sectors such as medical research, geotextiles, and
Technical excellence and production
performance are supplemented by Retech’s long-term commitment to
minimizing the energy consumption of the godet. Producers want
economic advantages as well as perfect solutions for producing
yarn with the required characteristics. The latest model of the
unique Retech induction heating system saves up to 10% of
energy. Heat distribution within the heater, as well as
optimized transfer to the roll shell, are key factors in
reducing heat losses. This not only saves energy but also
improves the overall godet performance.
Retech’s permanent synchronous magnet
motor driving the drawing rolls reduces energy consumption still
further, by up to 30%. Developments such as this illustrate the
industry-leading depth of knowledge and experience Retech
embodies. Equipment is sophisticated, yet simple to operate and
maintain by customer personnel, and its robust design and
construction ensures an extraordinary service lifetime.
Retech customized machine for a medical application,
featuring two high-temperature godets.
Manufacturers of yarns – whether
polyester, bio-based materials or aramid – rely on Retech
expertise with godets for thermal treatment and drawing.
Highly-accurate and cost-efficient performance combines with
Swiss engineering quality and over 45 years of experience,
creating confidence and trust with industry partners. “Godets
are the key elements to produce yarn for life-saving material
such as protective clothing and from environment-saving material
such as algae. We are proud of the trust showed by companies
approaching us with their – sometimes bold – ideas,” says von