PROCESS HEAT

PROCESS HEAT
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INDUSTRIAL HEATING SOLUTIONS

Swiss hot air technology

Leister’s Swiss-engineered blowers, hot air blowers, ignition blowers, and air heaters are integral to countless industrial production processes worldwide. With decades of experience in processing plastics, Leister stands as a trusted partner for both custom and standardized industrial heating solutions. Our products excel in precise controllability, easy integration into diverse production environments, and delivering exceptional performance and durability.

Product Highlights

  • HOTWIND Hot Air Blowers
    Leister’s HOTWIND series delivers up to 900 liters of air per minute, making it ideal for medium to large-scale industrial processes such as shrink-wrapping and packaging. Its compact design ensures seamless integration into various production lines, including mineral water filling and packaging plants.

  • MISTRAL Hot Air Blowers
    The MISTRAL series, known for its compactness and high pressure of up to 3.5 kilopascals, is perfect for installations with limited space. Widely used in the automotive industry for tasks like coating aluminum frames, the MISTRAL combines power and versatility in a space-saving design.

  • IGNITER BR4
    Designed for reliability, the IGNITER BR4 ignition blower is ideal for systems requiring robust and durable hot air ignition solutions. It is frequently used in industrial heating systems and large residential complexes, where its durability and consistent performance are essential.

INDUSTRIES AND APPLICATIONS

Leister hot air processes raise the bar

EASY TO INTEGRATE

Mechanical engineering

Thermal applications are essential in high-quality machines and production systems for manufacturing technical components and consumer goods. Leister’s process heat solutions, including air heaters and heat guns, provide exceptional controllability, offering significant advantages in mechanical engineering. Beyond performance, Leister excels with its unmatched global network of service centers, ensuring that spare parts are accessible even in the most remote locations. This makes Leister a trusted partner for process heat solutions in mechanical engineering worldwide.

PAPER AND PRINTING

Production goods

In paper production, process heat is frequently used to accelerate the drying process. Rapid ink drying is crucial after printing to prevent smudging, and hot air ensures that printed paper sheets and rolls dry quickly, enabling more efficient processing. Additionally, process heat is commonly applied in paper processing for laminating paper and board with plastic film, as well as for laminating wallpapers to enhance durability and make them washable.

Recommended Process Heat Products

Heat Guns

Explore our range of precision heat guns, designed for versatile applications from welding to drying. Contact us today for a quote or more information.

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Blowers

Discover our powerful blowers, perfect for industrial use where consistent airflow and reliability are essential. Reach out to us to get a quote or learn more.

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Industrial Hot Air Devices

Optimize your production processes with our advanced industrial hot air devices, engineered for efficiency and performance.

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Process Heat Application Areas

Drying Process
Leister’s heat guns, air heaters, blowers, and infrared heaters are perfect for a wide range of process heat drying processes. These devices excel in numerous applications, including the drying of paper, textiles, nonwoven materials, metals, plastics, and glass components. They are also essential in film packaging and food-related process heat tasks, such as roasting coffee or drying fruits and vegetables.
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Film Shrinking
Hot air is perfect for shrinking films in packaging and electrical engineering. Leister’s solutions are widely used in packaging technology, where films contract to their original shape when heated, thanks to the memory effect.
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Heat Treatment
Hot air is an invaluable tool for refining both food and cosmetic products, whether it’s adding the perfect shine to lipstick or enhancing the gloss on chocolate pralines. In the final stages of production, Process Heat is employed to give products their finishing touches, such as creating a glossy surface or enhancing flavor through roasting. Hot air blowers are commonly used to achieve the lustrous shine on chocolates and cosmetics like lipstick. Additionally, hot air can be gently applied to processes like roasting coffee beans, ensuring optimal results.
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Embossing Process
Embossing is used to create relief-like structures by heating the material beforehand, allowing it to mold into new 3-D patterns and retain them as it cools. In the manufacturing of large-area, multi-layer plastic textiles, such as tarpaulins, coverings, imitation leather, and flooring, heat plays a crucial role throughout the process. Typically, the final surface texture—like the grain of artificial leather—is achieved by heating the material’s surface and then embossing it with an engraved roller, ensuring the desired pattern is locked in.
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Sterilization Process
Sterilization involves the complete elimination of microorganisms and bacteria, making it essential for equipment used in food processing, medicine, and microbiology. In food preservation, sterilization is achieved by heating to temperatures above 100°C, ensuring the safety and longevity of the products.
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Laminating Process
Laminating enhances the final product by combining the mechanical and thermal properties of individual layers. This process is not only applicable to traditional laminate flooring but also works with materials like truck tarpaulins and foam. Essentially, laminating involves securely bonding multiple layers using a heat source, either with or without adhesives. This method is widely used in manufacturing, utilizing heat sources such as Krelus infrared heaters and Leister hot air blowers.
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Plastic Forming
Plastic membranes and linoleum can be effortlessly shaped with hot air. When heated, plastic tubes and Plexiglas windows can be bent and will retain their new shape once cooled. During the installation of membranes on roofs or in underground engineering, hot air allows the plastic to conform to difficult or awkward areas, simplifying subsequent processing. Similarly, when laying plastic or linoleum flooring, hot air is used to mold the material into the desired shape, making it easier to raise into corners or fit onto stairs.
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Thermoforming Process
In thermoforming, a flat plastic sheet is uniformly heated before being shaped into a three-dimensional form using vacuum deep drawing or a press within a closed mold. This process is perfect for permanently reshaping plastic. Thermoplastics are heated until they soften, allowing them to be molded into new forms. To ensure the material is flexible enough for the forming process, the entire component or specific parts are heated using hot air or infrared radiation.
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Shrink Tubing
Using heat shrink tubes to insulate or label cables is a common practice both in home electrical work and cable harness production. These special plastic tubes, known as heat shrink hoses, shrink significantly when exposed to heat, offering protection against mechanical damage and providing electrical insulation. Hot air is the most commonly used method for this application. With extensive experience and a leading market position, Leister is a trusted provider of solutions in this area. In the electrical industry, heat shrink hoses are essential for repairs, electrical insulation, and corrosion protection.
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