PROCESS EQUIPMENT

TAMPING DOSING DEVICE

Tamping dosing devices are used for the reliable feeding of very poorly dosing or very cohesive and very light products into an extruder. With the tamping dosing device, products are pressed into the barrel of the extruder from above. This can improve product quality and increase the dosing consistency and throughput of the extruder. Thanks to quick-release clamps, the tamping dosing device can be dismantled and cleaned quickly and easily.

• Feeding of products that are very difficult to dose
• Improved product quality
• Increased extruder throughput
• High dosing consistency
• Quick-release clamps for easy and quick disassembly and cleaning

CALENDER

The calender from Three-Tec is a versatile laboratory device for the continuous production of films, tapes or tablets directly from the still hot extrudate. Since only a short preparation time is required and the process can be started with the input of a few parameters, it is possible, for example, to produce 10,000 tablets within one day.

The two counter-rotating calender rollers have high dimensional accuracy, surface quality and hardness, so that end products can be produced with the highest product quality requirements.

The compact design allows the device to be placed in an isolator or in a laboratory environment with limited space.

FILM ROLLER

The film roller from Three-Tec enables the calibration of flat, dry extrudates. Furthermore, round extrudates can also be rolled out into a film with a defined thickness. The product is then evenly wound onto a spool.

The film roller consists of an adjustable and temperature-controlled pair of rollers, an adjustable pair of tension rollers and a rewinder or spool. The pulling force of the pull rollers and the spool of the rewinder is adjustable. This is ensured by a magnetic coupling.

The film roller is controlled by an integrated frequency converter. Optionally, the device can be integrated into a higher-level system via an interface.

• • Easy to use
  • Adjustable tensile force between film rollers, pull rollers and spool
  • Integrated or external control

COOLING BATH

The cooling bath in different lengths and designs is used for the efficient cooling of various extrudates before further processing by means of a rewinder or granulator. It is equipped with hold-down brackets or hold-down rollers and a scraper brush and is mounted on damping elements. The water can be drained via a valve. In our larger cooling baths, a cooling unit can be connected and the water level can be adjusted.

• Hold-down brackets or hold-down rollers
• Scraper brush
• Connection for cooling water inflow
• Connection for cooling water drain (overflow valve)
• Cooling water drain valve

COOLING ROLLER

The cooling roller is suitable for the efficient and continuous cooling of extrudates from approx. 3 kg/h to approx. 100 kg/h. The cooling roller picks up the product from the extruder nozzle, distributes it over almost the entire strip and cools the material reliably and quickly in direct contact with the metal. Thanks to our unique concept with the extra-large enclosing angle of the strip on the cooling roller, even extrudates with very high heat capacity or particularly high throughputs can be cooled many times more efficiently and with a comparatively small device. After cooling, the cooled and brittle product is broken into flakes via a conveyor and crusher screw and discharged through the outlet pipe (continuous process). The cooling roller is either controlled directly via the control system of the Three-Tec Extruder or can also be operated as a stand-alone device according to customer requirements.

COLLING CONVEYOR

The cooling conveyor belt is suitable for the gentle removal and efficient cooling of extrudates and granules. The conveyor belt rests on actively cooled cooling elements and is permanently cooled during operation.

Air connections in the lid of the cooling conveyor belt allow additional air cooling of the product. The belt speed can be variably adjusted between 0 and 20 m/min. The conveyor belt is controlled by means of an integrated frequency converter or optionally directly via the control system of the Three-Tec extruder.

CONVEYOR BELT LABORATORY

The conveyor belt is suitable for the gentle removal and cooling of the extrudate. In order to achieve more efficient cooling of the extrudate, a cooling tank on which the belt rests and is continuously cooled or air cooling can be integrated. This allows the extraction of extrudates at a temperature of up to 300 °C.

The belt speed can be adjusted variably between 0 and 6.5 m/min. The conveyor belt is controlled by means of an integrated potentiometer or optionally directly via the control system of the Three-Tec extruder.

• Conveyor belt material: silicone or PTFE
• Integrated or external control
• Belt speed: 0 to 6.5 m/min
• max. product temperature: 300 °C
• Height and strap angle adjustable
• Optionally with cooling tank (water/air)

SIDE DOSING UNIT

Side dosing devices are used for the forced feeding of powders, granules and fibers into an extruder. This can improve product quality, increase the throughput of the extruder and gently process additives. Thanks to quick-release clamps, the side dosing device can be dismantled and cleaned quickly and easily. Three-Tec manufactures side dosing devices for all extruder sizes and throughput ranges.

• Feeding of powders, granules and fibres
• Gentle processing of additives
• Improved product quality
• Increased extruder throughput
• Quick-release clamps for easy and quick disassembly and cleaning

GRANULATOR ECO

With the ECO granulator, strands can be processed into granules. The cutting length is determined by the rotary knife.

Depending on the application, rotary knives with different numbers of blades or different materials are used. The design of the cutting edge allows for problem-free granulation of both soft and hard extrudates.

The compact design allows the device to be placed in an isolator or in a laboratory environment with limited space. It is operated via the input unit of the frequency converter.

HOT TEE

With the hot knock-off, the extrudate can be reliably processed into granules with one or more knives directly attached to the nozzle plate. Both wet and enamel extrudates can be processed. The number of blades used and the setting of the speed allow the production of granule sizes between 0.5 and 10 mm.

The hot knock-off is controlled by means of an integrated potentiometer or optionally directly via the control system of the Three-Tec Extruder. An enclosure is optionally available for the hot knock-off.

REWINDER

The Three-Tec rewinder is suitable for winding the extrudate onto a spool. The pulling force between the trigger pulley and the spool is adjustable, which allows for very even winding. In addition to round strands, the rewinder can also be used to wind ribbon-shaped extrudates onto a spool.

The rewinder is controlled by means of an integrated potentiometer. Optionally, the device can be integrated into a higher-level system via an interface.

• Compact design
• Easy to use
• Adjustable pulling force between trigger pulley and spool
• Increased extruder throughput
• Integrated or external control

GRANULATOR HMI

With the HMI granulator, strands can be processed into granules. The speed of the feed roller and the cutting blade are independently adjustable. This allows the extrudate feed to be perfectly matched to the extrudate and the granule length to be adjusted between 0.5 and 15 mm during the processing process. The adjustable clamping pressure also enables gentle and precise processing of filigree granules.

The HMI granulator has an integrated control system including a touch panel for user-friendly operation or can be integrated into a higher-level system via an interface. Depending on the application, rotary knives with different numbers of blades or different materials are used. The design of the cutting edge allows for problem-free granulation of both soft and hard extrudates. Depending on the process requirements, the device can be equipped with a container for laboratory or batch granulation or with a hopper for continuous granulation.

The compact design allows the device to be placed in an isolator or in a laboratory environment with limited space.

SPHERONIZER

The Spheronizer is used for reducing the length and rounding off of fine extrudate strands. The desired geometry of the end product is influenced by the batch size, the speed and the surface structure of the friction disc.

The modular concept of Three-Tec’s Spheronizers offers the customer the option of using friction discs with different surface structures or combining different container sizes for different batch sizes with the same drive unit.

Equipped with an electric heater and connections for a temperature control unit, the container can be heated or cooled if necessary.

The Spheronizer is controlled by means of an integrated touch panel or by frequency converter. The speed of the friction disc can be infinitely adjusted between 200 and 4,000 revolutions per minute.

Depending on the container size, a batch quantity of 5 to 2,000 grams can be processed (larger batch quantities are also possible on request).