Heated godet rolls – for perfectly hot synthetic fibres

 

Energy saving is a standard at Retech for motors and heating equipment. Godet roll designs rely on the proven and continuously improved energy saving technology developed by Retech R&D in Switzerland. 


Retech godet rolls are equipped with either single-zone or multi-zone heating, induction, infrared or resistance heating – whatever is best for the specific synthetic fibre production process. 

Single-zone and multi-zone heated godet roll developed by Retech; perfect for energy saving.

Technical specifications

•    Temperature: 60 - 250 °C
•    Speed: up to 6500 m/min
•    Roll diameter: 100 - 250 mm
•    Roll length: 100 - 450 mm
•    Supply voltage: 230/400 V
•    Frequency: 50/60 Hz
•    Installed power: 300 - 24000 W

Characteristics

•    Single- or multi-zone (3 or 4) induction heated
•    Stationary (STS) or rotating (RTS) temperature transmission system
•    PT100 temperature sensor with monitoring sensor for over-temperature protection
•    Diverse surface materials available (chrome, ceramic or other)
•    Diverse surface finishes available (for optimum frictional properties)
•    Retech ’Thermoblocker’ (bearings outside the hot part of the roll)

Advantages

•    Accurate and precise surface temperature profile (for consistent yarn quality)
•    Robust, simple modular design with installation from the front
•    Low maintenance
•    All electrical connections with ‘plug-in’ facility
•    No system balancing (roll exchange without rebalancing)
•    No additional lubrication (lifetime bearings)
•    Integrated cooling without additional cooling systems (water, oil mist, etc.)
•    Supervision of temperatures to protect damage (IoT)

 

Externally-driven heated godet rolls – unique design

 

The so-called rotating heated draw pins or draw rolls represent a unique Retech design and development. This solution enables the customer to drive the draw roll by the yarn itself or to use an external drive solution such as pulley with belt, coupling with a motor, or even a coupling with gear and motor. 


The design of the rotating heated draw rolls specifically supports very low speed applications of only a few meters per minute or even per hour. 

The rotating heated draw roll features the unique and perfect Retech design.

Advantages

•    Accurate and precise surface temperature profile (for consistent yarn quality)
•    Robust, simple modular design with installation from the front
•    Low maintenance 
•    All electrical connections with ’plug-in’ facility
•    No system balancing (roll exchange without rebalancing)
•    No additional lubrication (lifetime bearings)
•    Integrated cooling without additional cooling systems (water, oil mist, etc.)
•    Low-speed versions available (with gearbox, down to <5 m/min)
•    Supervision of temperatures to protect damage (IoT)

Characteristics

•    Single- or multi-zone (3 or 4) induction heated
•    Stationary (STS) or rotating (RTS) temperature transmission system
•    PT100 temperature sensor with monitoring sensor for over-temperature protection
•    Diverse surface materials available (chrome, ceramic or other)
•    Diverse surface finishes available (for optimum frictional properties)
•    Normally belt driven – motor/gear optional

Technical specifications

•    Temperature: 60 - 250 °C
•    Speed: up to 3000 m/min
•    Roll diameter: 100 - 220 mm 
•    Roll length: 100 - 450 mm
•    Supply voltage: 230/400 V
•    Frequency: 50/60 Hz
•    Installed power: 300 - 10,000 W

 

High-temperature godet rolls – for high-performance fibres 

 

Some unique yarn characteristics are made possible by impressive temperatures. High-performance fibres require temperature at extremely high levels, since fibres such as para-aramids have high glass transition temperatures nearing 370 °C.


Retech high-temperature godet rolls have a heating power of up to 400 °C.

Retech high-temperature godet rolls are perfect for high-performance fibres and have a heating power of up to 400 °C.

Characteristics

•    Multi-zone (3 or 4) induction heated
•    Rotating (RTS) temperature transmission system
•    PT100 temperature sensor with monitoring sensor for over-temperature protection
•    Diverse surface materials available (chrome, ceramic or other)
•    Diverse surface finishes available (for optimum frictional properties)
•    Retech ’Thermoblocker’ (bearings outside the hot part of the roll)
•    Special cooling systems for bearings and induction heater

Technical specifications

•    Temperature: 60 - 400 °C
•    Speed: up to 3000 m/min
•    Roll diameter: 220 - 400 mm
•    Roll length: 250 - 550 mm
•    Supply voltage: 230/400 V
•    Frequency: 50/60 Hz
•    Installed power: up to 24000 W

Advantages

•    Accurate and precise surface temperature profile (for consistent yarn quality)
•    Robust, simple modular design with installation from the front
•    Low maintenance
•    All electrical connections with ’plug-in’ facility
•    No system balancing (roll exchange without rebalancing)
•    No additional lubrication (lifetime bearings)
•    Integrated cooling without additional cooling systems (water, oil mist, etc.)
•    Supervision of temperatures to protect damage (IoT)

 

Unheated godet rolls – mainly designed for relaxing and POY

 

Unheated ambient godet rolls are used mainly in POY production or for relaxing. These and other processes in the production of synthetic fibres benefit from unheated godet rolls operating at high speed. Sophisticated energy-saving motors guarantee long running performance, thanks to the special bearing systems.

Retech unheated godet rolls are perfectly designed for relaxing and POY applications.

Technical specifications

•    Speed: up to 6500 m/min
•    Roll diameter: 100 - 220 mm
•    Roll length: 100 - 650 mm
•    Supply voltage: 230/400 V
•    Frequency: 50/60 Hz

Characteristics

•    Ambient tempered roll surface
•    Diverse surface materials available (chrome, ceramic or other)
•    Diverse surface finishes available (for optimum frictional properties)

Advantages

•    High speed range
•    Robust, simple modular design with installation from the front
•    Low maintenance
•    All electrical connections with ’plug-in’ facility
•    No system balancing (roll exchange without rebalancing)
•    No additional lubrication (lifetime bearings)
•    Integrated cooling without additional cooling systems (water, oil mist, etc.)

 

Cooled godet rolls – adding the right quality

 

Active or liquid-cooled godet rolls play an important role in ultra-high tenacity processes. They significantly contribute to improving certain yarn characteristics, e.g. to reduce the shrinkage factor for industrial yarn.


Cooled godet rolls come as a full set, including energy-saving motor, as well as complete cooling circuit.

Cooled godet rolls by Retech add the perfect quality to yarn made of synthetic fibres.

Advantages

•    Precise cooling
•    Accurate and precise surface temperature profile (for consistent yarn quality)
•    Robust, simple modular design with installation from the front
•    Low maintenance
•    All electrical connections with ‘plug-in’ facility
•    No system balancing (roll exchange without rebalancing)
•    No additional lubrication (lifetime bearings)
•    Integrated cooling without additional cooling systems (water, oil mist, etc.)
•    Low speed versions available (with gearbox, down to <5 m/min) 

Characteristics

•    Single-zone forced cooling (chilled water)
•    Stationary (STS) or rotating (RTS) temperature transmission system
•    PT100 temperature sensor
•    Diverse surface materials available (chrome, ceramic or other)
•    Diverse surface finishes available (for optimum frictional properties)
•    Maintenance-free seal system

Technical specifications

•    Temperature: 20 - 70 °C
•    Speed: up to 4500 m/min
•    Roll diameter: 127 - 220 mm
•    Roll length: 150 - 550 mm
•    Cooling power: 50 - 4000 W