Our product range includes models with screw diameters from 25 mm to 250 mm and lengths of up to 45D, depending on the diameter. These carefully designed machines are available in different versions - from models without degassing to those with single, double or even quadruple degassing. This range of options allows us to cater to the specific needs of our customers and not only meet but exceed their expectations.
All extruder sizes are available without degassing, with degassing, with double degassing or with quadruple degassing.
Modern screw geometries guarantee constant pressure, good homogenization and maximum output values. In addition to plastics, KUHNE Extruders are also used for processing biodegradable materials, wood flour-filled or glass fiber-reinforced plastics and other extrudable materials.
With more than 200 extruders leaving our plant in Sankt Augustin every year, we underline our reliability and commitment to quality. Our range includes customized Extruders as well as certain machine types that are produced in series.
Advantages of KUHNE Extruders
KUHNE extruders combine state-of-the-art technology with decades of experience and offer unique advantages for any production environment. Their outstanding energy efficiency reduces operating costs and protects the environment at the same time. Precise control systems ensure consistently high product quality, even with demanding materials. The flexibility of the systems makes it possible to adapt them precisely to the specific requirements of each customer. As a renowned Extruder manufacturer, KUHNE places particular emphasis on longevity and minimal maintenance, which creates a clear competitive advantage in the long term.
Energy efficiency
KUHNE extruders set standards in terms of energy efficiency. By using the latest technologies, such as energy-optimized drive systems and precise temperature control, energy consumption is reduced to a minimum without compromising the performance of the machines. This not only contributes to sustainable production, but also significantly reduces operating costs.
Precision
A key advantage of KUHNE extruders is their exceptional precision. Sophisticated control systems ensure that all process parameters such as temperature, pressure and speed are precisely monitored and controlled. This guarantees consistent results, even with complex or sensitive materials. KUHNE extruders ensure exact material processing and maximum product safety, especially for packaging such as medical or food packaging, where the highest quality standards are required. This precision enables companies to reliably meet even the most demanding customer requirements.
Types of Extruders
Single-screw extruder
The single-screw extruder is the most commonly used type of extruder and is ideal for processing homogeneous materials such as plastics, rubber or similar raw materials. Its simple design and high efficiency make it particularly versatile and cost-effective. The screw ensures uniform processing of the material through a precise combination of conveying, compacting and melting. Typical applications include the production of films, sheets, pipes and profiles. Single-screw extruders are known for their reliability and are ideal for production processes with consistent material properties.
High Speed Extruder
High-performance extruders are used when maximum productivity is required. These machines are designed for high throughput rates and continuous operation without sacrificing precision. They are often used in the plastics and packaging industry, where large quantities of raw materials need to be processed. Thanks to their robust design and energy-efficient systems, they reduce operating costs and increase profitability. High-performance extruders are characterized by exceptional durability and are the perfect choice for companies looking for a reliable solution for high production requirements.
Basics and functionality of Extruders
An Extruder is an indispensable machine in industrial production that efficiently processes materials such as plastics, food or pharmaceutical substances. The principle is based on using mechanical movement, temperature and pressure to shape raw materials into the desired form. The central component is the screw, which transports, heats and homogenizes the material in the heated cylinder. The drive ensures precise control of the screw speed and thus influences the throughput. This combination of mechanical and thermal processes enables the production of high-quality products in continuous processes.
Snail
The screw is the heart of every Extruder and performs the central task of conveying the material evenly through the barrel. It is designed in such a way that it not only transports the raw material, but also compresses and homogenizes it at the same time. Its special geometry - consisting of conveying, compression and discharge zones - ensures that the material is optimally processed on its way through the Extruder. The screw speed is precisely controlled to ensure both the material quantity and the desired processing quality. The adaptation of the screw shape to specific materials enables a wide range of applications, whether in plastics processing, food production or other industries.
Degassing concepts
Without degassing
The single-screw extruders without degassing are specially designed for applications in which no volatile components need to be removed from the material. This design is ideal for processing materials that are already in an optimum condition for the extrusion process. The elimination of degassing units provides a cost-effective solution for specific production requirements without compromising on quality or performance.
With degassing
The variant with degassing is intended for the extrusion of materials where the removal of moisture or other volatile components is necessary. This process significantly improves the quality of the end product by preventing bubble formation, irregularities and potential material weakening. The degassing option ensures that the final product meets the highest standards in terms of clarity, strength and aesthetic properties.
With double degassing
For more demanding applications where even more intensive cleaning of the material from volatile components is required, Extruders with double degassing offer an excellent solution. This configuration doubles the effectiveness of degassing by passing the material through two separate degassing zones. This is particularly beneficial for high quality end products or materials that tend to have a higher concentration of volatile ingredients. Double degassing guarantees even better homogeneity and quality of the extruded product.
Single-screw extruder for plastics processing
Single-screw extruders play a central role in the plastics processing industry, especially when it comes to the production of wood flour-filled plastics and glass fiber reinforced plastics. These specialized extruders are characterized by their ability to efficiently process complex materials with fillers by ensuring uniform distribution and homogenization.
An essential element of these extruders are the barrier screws, which have been specially developed for processing polyolefins. They offer significant advantages by enabling better melt filtration, resulting in increased product quality.
By separating the molten and unmelted material along the screw, barrier screws improve the homogeneity and mechanical properties of the end product while increasing energy efficiency and throughput. These technologies make single-screw extruders an indispensable solution for demanding plastics processing applications by supporting the production of high-quality, reinforced plastic products with improved physical properties and performance.
KUHNE single-screw extruder - The product features
- Screw diameter between 25mm and 250mm
- Barrel length 24 to 45D (with and without degassing)
- High Speed Extruder 60mm, 72mm and 90mm screw diameter, screw speed up to 1,500 rpm, output rates of up to 2,500kg/h PS, 2,100kg/h PP. Also suitable for ABS, with low energy input.
- Water-cooled, low-noise motors with direct drive
- 3-zone screws, degassing screws, barrier screws with shearing and mixing section
- Barrier screws for processing polyolefins without changing screws
- Screw extension optionally to the front or rear
- Single degassing, double degassing and quadruple degassing (for hygroscopic polymers)
- Water-cooled drive technology with maximum efficiency as asynchronous, synchronous and torque motors