Infrared Heaters for Plastic Welding

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KRELUS G9-40 MINI-MINI - Infrared Heaters

• Modular structure
• Low-maintenance and reliable
• Direct temperature control
• Can be used without cooling or reflectors

DETAILS - FlexibleThe KRELUS G9-40 MINI MINI infrared heater from Leister can be integrated perfectly thanks to its small size. The response time for this infrared heater module is very short. Infrared radiation is emitted in the medium-wave range, with a wavelength peak of 2.5 µm. This IR heater can therefore be used for most infrared applications.
The MINI-MINI can be used in various applications: For example, coating textiles, paper, and film, or embossing, laminating and lining in the plastics processing industry. Important to know: The KRELUS MINI-MINI IR series can be combined with the MINI series G14-25 and G7-50.
TECHNICAL DATA

• VOLTAGE - 230 V
• FREQUENCY - 50/60 Hz
• POWER - 1000 W
• POWER DENSITY - 32.0 kW/m²
• LENGTH - 398.0 mm
• WIDTH - 79.0 mm
• HEIGHT - 65.0 mm
• PROTECTION CLASS (IEC 60529) - IP20
• CONFORMITY MARK - CE

HIGHLIGHTS

• Full-range, infrared radiation
• Power density up to 32 kW/m² respectively 20.6 W/in²
• Full-range, infrared radiation
• Fast response times

APPLICATIONS - Virtually unlimited

• Drying process
• Embossing process
• Laminate process
• Thermoforming process
• Coating process

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KRELUS G11-12 SUPER-MINI - Infrared Heaters

• Modular structure
• Low-maintenance and reliable
• Can be used without cooling or reflectors
• Power density up to 60 kW/m² respectively 38.7 W/in²

DETAILS - Extra-small, square IR radiatorAt only 123 x 123 x 50 mm / 4.84 x 4.84 x 1.9 in, the square KRELUS G11-12 SUPER-MINI panel heater can even be used on smaller areas. Like the other KRELUS modular heaters, these can also be used standalone or in combination.

The square KRELUS G11-12 SUPER-MINI can also be excellently used in combination with the rectangular KRELUS G5-25 SUPER-MINI. Due to the grid dimension, fields of different sizes can be realized in a narrowly graded manner. The KRELUS SUPER-MINI have all the advantages of the KRELUS IR heaters, such as fast response, good controllability and the perfect wavelength in the medium-wave IR for most applications.
TECHNICAL DATA

• VOLTAGE - 77 V
• FREQUENCY - 50/60 Hz
• POWER - 540 - 960 W
• POWER DENSITY - 35.0 - 60.0 kW/m²
• LENGTH - 123.0 mm
• WIDTH - 123.0 mm
• HEIGHT - 50.0 mm
• PROTECTION CLASS (IEC 60529) - IP20
• CONFORMITY MARK - CE

HIGHLIGHTS

• Strong IR fields
• Square form easy to deploy
• Heating directly available
• Direct temperature control

APPLICATIONS - Virtually unlimited

• Drying process
• Embossing process
• Laminate process
• Thermoforming process
• Coating process

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KRELUS G14-25 MINI-MINI - Infrared Heaters

• Modular design
• Low-maintenance and robust
• Fast response times for precise temperature control
• Optimal absorption
• No cooling or reflectors required

DETAILS - Small modules for even more flexibility

Infrared heater fields can be perfectly adapted to the needs of the user with the KRELUS MINI-MINI heaters from Leister, which are available in two sizes. ??? The two models, KRELUS G14-25 MINI-MINI and G9-40 MINI-MINI provide short response times and emit medium-wave infrared radiatin with a peak wavelength of 2.5 µm - as all KRELUS infrared heaters. The MINI-MINI heaters are therefore best suited for most applications in textile-, plastics- and paper processing.

The field of application is wide. In applications such as coating textiles, paper and films, these heaters are used as well as in systems for embossing, laminating and coating in plastics processing. The KRELUS MINI-MINI heaters can also be combined with the heater modules from the MINI Series G14-25 and G7-50.

TECHNICAL DATA

• VOLTAGE - 230 V
• FREQUENCY - 50/60 Hz
• POWER - 1000 - 1200 W
• POWER DENSITY - 32.0 - 38.0 kW/m²
• LENGTH - 248.0 mm
• WIDTH - 123.0 mm
• HEIGHT - 65.0 mm
• WEIGHT - 1.35 kg
• PROTECTION CLASS (IEC 60529) - IP20
• CONFORMITY MARK  - CE

HIGHLIGHTS

• Best absorption
• Maximum energy efficiency
• Fast response times
• No increased start-up current
• Medium-wave IR radiation results in optimum absorption
• Continuously controllable temperature up to 850 °C (1562 °F)

APPLICATIONS - Virtually unlimited

• Drying process
• Embossing process
• Laminate process
• Thermoforming process
• Coating process

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KRELUS G14-25 MINI - Infrared Heaters

• Modular construction
• Low-maintenance and durable
• Fast response
• Optimal absorption

DETAILS - Versatile infrared heater modules
The KRELUS G14-25 MINI square, modular heaters are ideal for larger or smaller fields with one or more separately controlled heating zones. The heater fields are not only used for drying applications, but also for all heating applications where the medium-wave infrared radiation is well absorbed; like water, plastic, paper and wood.
Due to the grid dimensions of the various KRELUS heaters, the KRELUS G14-25 MINI and G7-50 MINI modules can also be used together in a field. They can even be controlled separately in different heating zones. Thanks to their fast response times, increased efficiency and durable design, the infrared heaters are relied on for many processes in the automotive, packaging, plastics, paper and printing industries.
TECHNICAL DATA

• VOLTAGE - 230 V
• FREQUENCY - 50/60 Hz
• POWER - 1350 - 3100 W
• POWER DENSITY - 22.0 - 50.0 kW/m²
• LENGTH - 248.0 mm
• WIDTH - 248.0 mm
• HEIGHT - 65.0 mm
• PROTECTION CLASS (IEC 60529) - IP20
• CONFORMITY MARK - CE

HIGHLIGHTS

• Versatile
• Robust, square, module IR-heater
• Medium wave
• Short heating and cooling times
• Fast response allows precise temperature control
• Power density up to 50 kW/m² or 32.25 W/in²

APPLICATIONS - Virtually unlimited

• Laminate process
• Embossing process
• Drying process
• Thermoforming process
• Coating process

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KRELUS G3-12 MICRO - Infrared Heaters

• Small and flexible
• Can be custom-combined and controlled
• Robust construction in modular design

DETAILS - Small, custom heaters
The KRELUS G3-12 MICRO heater from Leister are very small panel heaters that occupy a special place among the Krelus modular heaters. With dimensions of only 123 mm x 37 mm (4.8 x 1.45 in) and a height of 36 mm (1.4 in), they have the versatility to be integrated in various applications and even in confined spaces. These infrared heaters can also be operated individually or in combination.
The custom KRELUS Controller is available as a controller for these small heaters, proving their versatility and their ability to be used in various applications. Whether small surfaces, endless tapes or even three-dimensional parts that need to be heated, the KRELUS MICRO heaters are a fit for the job. The imagination is free to create without limits.
TECHNICAL DATA

• VOLTAGE - 21 V
• FREQUENCY - 50/60 Hz
• POWER - 260 W
• POWER DENSITY - 53.0 kW/m²
• LENGTH - 123.0 mm
• WIDTH - 37.0 mm
• HEIGHT - 36.0 mm
• PROTECTION CLASS (IEC 60529) - IP20
• CONFORMITY MARK - CE

HIGHLIGHTS

• Precise infrared radiation
• Full-range, infrared heating units
• Fast response times
• Easy to control

APPLICATIONS - Virtually unlimited

• Drying process
• Laminate process
• Thermoforming process
• Embossing process
• Coating process

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The KRELUS PROFILE HEATER are the series of customized IR heaters, which are mainly used to heat up large areas. The heaters can be very individually adapted to the customer's requirements in terms of size and power density. Working widths of 4 to 5 meters (13.1 to 16.4 feet) are not uncommon in the production of floor coverings, roofing membranes or geomembranes. These are covered perfectly by the profile heaters. Coating, laminating and embossing are the most common applications for these IR-heaters.

KRELUS PROFILE HEATER can not only be scaled in terms of size and power, but can also be adapted precisely to the electrical voltage available at the place of use. In fields composed of several profile heaters, individual heaters can be switched off or on as required. These customized KRELUS heaters are available as single radiators up to 7 meters (22.9 feet) in total length. The optimal medium-wave infrared radiation and fast response times of the heaters are common features of all KRELUS heaters.
TECHNICAL DATA

• VOLTAGE - 110 - 660 V
• POWER DENSITY - 5.0 - 45.0 kW/m²
• LENGTH - 500.0 - 7000.0 mm
• WIDTH - 100.0 - 600.0 mm
• HEIGHT - 70.0 mm

APPLICATIONS - Virtually unlimited

• Embossing process
• Laminate process
• Thermoforming process
• Drying process
• Coating process

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KRELUS Pin Heater

• Contactless heating, cooled die
• Quick response
• Heating and re-forming in the same position
• Light weight facilitates easy handling

DETAILS - Infrared tool for rivetingThe KRELUS Pin heater is specially designed for riveting plastic. It allows one tool to heat and re-form at the same position. Meanwhile, the KRELUS Pin heater does not need to be repositioned between steps because the riveting die is mounted concentrically to the radially-constructed emitter. Another advantage of the KRELUS Pin heater is contactless heating of the rivet pin with medium-wave infrared heating. This allows uniform, gentle and highly controlled plasticization.
Using a cold punch reliably prevents the adhesion of melted material. Besides the assembly lines in the automotive and electronics industries, the KRELUS Pin heater can also be used in many other sectors of plastic processing. Almost all thermoplastics can be plasticized and re-formed.
TECHNICAL DATA

• VOLTAGE - 4 V
• POWER - 120 W
• CURRENT - 30 A
• LENGTH - 105.0 mm
• WIDTH - 35.0 mm
• HEIGHT - 21.0 mm
• WEIGHT - 0.165 kg

HIGHLIGHTS

• Infrared radiation for riveting
• Infrared radiation for riveting
• Ideal for riveting in plastics processing
• Contactless energy input
• Quick and even heating up process
• No relative movement between heating and moulding

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Krelus infrared heaters are well-suited for drying applications since water absorbs ir radiation in the medium-wave infrared range excellently. The krelus mini heaters can be perfectly combined to make heater fields in various sizes. Due to the grid dimension, both models can be used in the same field and can be individually controlled in separate heating zones as the needed. They can also be used individually. The variety of options aid flexibility. The mini heaters are available in six power ratings between 1. 3 and 3. 6 kw per module. Thanks to their outstanding features, such as fast response time, high efficiency and robust design (to name a few), they are perfect for plastics processing applications in the automotive industry, the packaging industry, as well as in paper and printing machines. One thing all krelus radiators have in common is that they have no moving parts, making them virtually immune to wear and thus requiring no maintenance. Nevertheless, should a defect occur in a heater field, individual heaters can be quickly and easily replaced thanks to the modular design.

applications - virtually unlimited

• drying process
• embossing process
• laminate process
• thermoforming process
• coating process

technical data

• voltage - 230 v
• frequency - 50/60 hz
• power - 1350 - 3100 w
• power density - 22. 0 - 50. 0 kw/m²
• length - 496. 0 mm
• width - 123. 0 mm
• height - 65. 0 mm
• weight - 2. 7 kg
• protection class (iec 60529) - ip20
• conformity mark - ce

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KRELUS G5-25 SUPER-MINI - Infrared Heaters

• Extra compact IR heater
• Extremely low maintenance
• Direct temperature control

DETAILS - Super small IR heaterWith dimensions at 248 x 61 x 50 mm / 9.77 x 2.4 x 1.96 in, the rectangular KRELUS G5-25 SUPER-MINI panel heater from Leister is extremely small and easy to integrate. KRELUS modular heaters can be used individually or in combination.
Alone or in combination with several KRELUS SUPER-MINI, these small module heaters with high intensity of up to 60 kW/m² bring advantages to many applications. The possibility of individually adapting the intensity of different zones within an IR heater field very quickly to the conditions allows homogeneous temperature distribution on the product even in complex processes.
TECHNICAL DATA

• VOLTAGE - 77 V
• FREQUENCY - 50/60 Hz
• POWER - 540 W
• POWER DENSITY - 35.0 - 60.0 kW/m²
• LENGTH - 248.0 mm
• WIDTH - 61.0 mm
• HEIGHT - 50.0 mm
• PROTECTION CLASS (IEC 60529) - IP20
• CONFORMITY MARK - CE

HIGHLIGHTS

• Highest power density
• Power density up to 60 kW/m² respectively 38.7 W/in²
• Heating radiation directly "on" or "off"
• Can be used without cooling

APPLICATIONS - Virtually unlimited

• Drying process
• Embossing process
• Laminate process
• Thermoforming process
• Coating process

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KRELUS G3-6 MICRO - Infrared Heaters

• Smallest size
• Differentially controllable
• Fast response times
• Simple, modular design

DETAILS - IR heaters for custom requirements, XS
The very small KRELUS G3-6 MICRO IR heaters from Leister in XS format occupy a special position among the module heaters. With a size of only 61 mm x 37 mm or 2.4 x 1.45 inches with a height of 36 mm / 1.4 inches, they can be integrated even in narrow spaces.
These KRELUS G3-6 MICRO IR modules can be precisely controlled and flexibly used individually or in groups of several heaters. This allows to heat small areas but also 3-D components from several sides.
TECHNICAL DATA

• VOLTAGE - 10 V
• FREQUENCY - 50/60 Hz
• POWER - 130 W
• POWER DENSITY - 53.0 kW/m²
• LENGTH - 61.0 mm
• WIDTH - 37.0 mm
• HEIGHT - 36.0 mm
• PROTECTION CLASS (IEC 60529) - IP20
• CONFORMITY MARK - CE

HIGHLIGHTS

• Precise infrared heat
• Small and flexible
• Easily regulated radiation
• Efficient and fast

APPLICATIONS - Virtually unlimited

• Drying process
• Embossing process
• Laminate process
• Thermoforming process
• Coating process

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KRELUS Standard System - Infrared Heaters

• Plug and play
• Standardized, complete system
• Ideal for laboratory and pilot plant applications
• Contactless temperature measurement available

DETAILS - Complete systems from a single source
With the KRELUS standard system, the user receives a almost complete plug and play solution without having to forego the quality of the proven KRELUS modular heaters, with all their advantages. The standard IR system consists of one or two heater fields, which are comprised of several KRELUS modular heaters and are mounted on a frame.
In addition, the control system, which is precisely matched to the heaters, is also supplied and is part of the system that uses a PID control to ensure precise temperatures are applied to the product.
TECHNICAL DATA

• VOLTAGE - 400 V
• FREQUENCY - 50 Hz
• POWER - 10000 - 20000 W
• CURRENT - 44 - 88 A
• LENGTH - 500.0 - 1000.0 mm
• WIDTH - 250.0 - 500.0 mm
• HEIGHT - 135.0 - 237.0 mm
• ADDITIONAL DESCRIPTION - Control cabinet (1 field = 500 x 500 x 210 mm, 2 fields = 600 x 800 x 250 mm)
• CONFORMITY MARK - CE

HIGHLIGHTS

• The complete system
• All from one source
• Plug and play
• Different variations available
• 1-2 fields with or without pyrometer and PID controller

APPLICATIONS - Virtually unlimited

• Drying process
• Embossing process
• Coating process
• Laminate process
• Thermoforming process

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KRELUS Contour Infrared Heaters

• Individual IR heater
• Contour
• Three-dimensional
• Precise heating

DETAILS - Precise contour heating

The contour IR heaters from Leister can be individually adapted to the components to be heated. They are mainly used to weld plastic molded parts with IR heat in a gentle and contactless manner. Different areas can be controlled individually, which guarantees optimal weld quality. In addition to IR welding, the contour heaters can also be used for precise heating applications of narrowly defined zones on components with a wide variety of geometries.

The contour IR heaters, also called contour heaters, can be designed individually for specific components and heating applications. From simple lines, through simple open or closed 2D geometries, to complex 3D free-form lines and surfaces, the contour heaters can be produced in different sizes to suit specific components.
HIGHLIGHTS

• Perfect contour
• Individual form
• 2-D and 3-D contours of different lengths
• Several zones per contour possible
• Contactless IR welding

APPLICATIONS - Virtually unlimited

• Drying process
• Embossing process
• Coating process
• Laminate process
• Thermoforming process

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KRELUS Special Infrared Heaters

• Manufactured to meet specific customer requirements
• Different designs and sizes possible
• Responsive and precisely controllable

DETAILS - Custom heaters for unique solutionsSome customers requirements call for individual heating sources. KRELUS infrared systems from Leister offer these too - from small to large in a wide variety of geometries. ranging from small to large and in a wide range of dimensions. The engineering develops infrared heaters precisely tailored to the requirements in close cooperation with the customer. These individual solutions can be adapted to the conditions of the application in terms of power, voltage and design.

Naturally, matching controllers to ensure safe and efficient operation will also be offered for these customer-specific heaters.
HIGHLIGHTS

• The IR specialties
• Individually customizable
• Versatile geometries i.e. lines and surfaces
• Radial heating from inside or outside is possible
• Efficient medium wave IR heater

APPLICATIONS - Virtually unlimited

• Drying process
• Embossing process
• Coating process
• Laminate process
• Thermoforming process

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KRELUS Controller

• Tailored to customer requirements
• Perfectly adapted for the Krelus heaters
• High-quality and efficient
• Versatile with controls and interfaces
• Continuous power control, temperature regulation

DETAILS - Custom, versatile, efficient

For all modular heaters, heater fields and tailor-made as well as customized heaters Leister offers the right KRELUS Controller. These can be adapted individually to the process and customer needs. Here, the possibilities range from simple power controls to complex temperature regulators. With the aid of contactless temperature measurement using a pyrometer, the product temperature can be measured very precisely and the heaters can be regulated with extremely fast power adjustment.

This considerably increases process safety and reproducibility, while ensuring consistent product quality, despite environmental effects. Stand-alone solutions are possible as well as integration into existing system controls. Depending on the customer request for infrared heaters, several zones can be individually controlled, regulated, and turned on or off. Various interfaces are available for external control.
HIGHLIGHTS

• Everything under control
• Control optimized for IR emitters
• Open or closed loop heating field control
• Complete control
• Wide range of services
• Remote control interface possible