Particle-free joining
Innovative Leister laser plastic welding systems enable new manufacturing methods in automotive engineering, medical technology, sensor technology, electronics and microsystems technology. Each of our developments are considered state of the art.
A worldwide exclusive Leister specialty is the patented and award-winning "GLOBO-Welding", in which three-dimensional plastic parts are welded in a single operation. We find tailor-made, economical solutions for a wide range of tasks and customer requirements. Leister laser specialists accompany you from conception, design, and material selection to process optimization and integration.

Complete range of accessories
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View productsNOVOLAS TTS
The compact NOVOLAS™ TTS laser welding device contains all the components necessary for the laser welding of plastics.
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View productsBASIC M
The BASIC M laser welding system from Leister is based on a modular block building system.
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View productsNOVOLAS WS-AT
The NOVOLAS™ WS-AT is a universal modular laser welding system and a manual workstation that can be provided with expansions and accessories for versatility.
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View productsMAXI
MAXI is a modular, universally applicable laser welding system from Leister, which is particularly suitable for large components. The system can be additionally extended by housing attachments. In addition to the standard version, extensions with rotary table and transfer belt are available to increase the throughput. As an alternative to the servo axes, the system can be equipped with a 6-axis robot. This significantly increases the contour welding flexibility, especially in combination with the GLOBO Optics.
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View productsINLINE WELDER
The Inline Welder from Leister is a laser welding system for integration into industrial production lines. In the laser-safe processing cell, 2D contours can be welded with the Scanner Optic from Leister on a working area of max. 250×250 mm.
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View productsBASIC S
The BASIC S is an air-cooled laser system designed for integration into production lines and manufacturing cells. Due to its consistently modular design, the laser system can be configured very well for different requirements.
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View productsNOVOLAS BASIC AT
Due to its smart, modular structure, the NOVOLAS™ BASIC AT laser welding system can be configured easily for even the most diverse requirements and can thus be used as a manual workstation and fully integrated into automated production plants.
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View productsNOVOLAS BASIC AT COMPACT
The NOVOLAS™ BASIC AT COMPACT is designed for integration into production lines and production cells in exactly the same manner as the BASIC AT.
Decades of experience
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APPLICATIONSLaser welding of transparent plastics
Laser welding of transparent plastics is a pioneering technology that enables clean weld seams for transparent components without the addition of absorbers. It opens up new areas of application in medical technology, where transparency is crucial.
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APPLICATIONSFluidic Components Welding
Sensitive parts such as fluid-carrying components can be welded together precisely, permanently, firmly and above all contamination-free.
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APPLICATIONSHousing Welding
Housings for various end uses and applications can be reliably and permanently welded with laser technology.
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APPLICATIONSMetal to Plastic Joining
Different materials such as metal and plastic can be joined and permanently connected by laser. This innovative joining process is particularly interesting in the automotive industry.
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APPLICATIONSThin Plastic Film Welding
Depending on the application, very thin films and membranes can be prefabricated with an automatic welding machine, processed on site or even welded with laser.
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APPLICATIONSWelding Pipe and Hose Connectors
Hose connections or tube connectors can be firmly and tightly attached and sealed using laser technology.
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For any solution
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WELDING CONCEPTSContour Welding
In contour welding, a focused laser beam sequentially scans the weld seam and melts it locally.
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WELDING CONCEPTSDOE Welding
Special optical components, so-called diffractive optical elements (DOE), can be adapted to the laser welding process.
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WELDING CONCEPTSGLOBO Welding
Globo welding works on the principle of contour welding.
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WELDING CONCEPTSMask Welding
A mask is inserted between the laser source and the parts to be welded. A linear, preferably well collimated - i.e. parallel - laser beam is moved across the parts to be joined.
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WELDING CONCEPTSQuasi-Simultaneous Welding
Two scanner mirrors deflect the point-shaped laser beam and guide it along the welding contour at very high speed.
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WELDING CONCEPTSRadial Welding
The laser beam is deflected by a mirror so that it impinges radially on the rotationally symmetrical surface of the components to be welded.
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WELDING CONCEPTSRoller Welding
Roller welding is based on the principle of GLOBO welding. However, the glass roller is not supported by air bearings, but by ball bearings, either on one side or on both sides.
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WELDING CONCEPTSSimultaneous Welding
In this process, the entire weld seam is heated simultaneously by one or more lasers.
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WELDING CONCEPTSClamping Devices
In addition to the process parameters of laser power, speed and rotations, the contact in the joining plane is decisive for a successful weld.
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Leister products convince
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01VersatileAutomotive Industry
The percentage of plastics used in the automobile industry is constantly increasing. The aim of this is firstly to cut costs and secondly to reduce the weight. Many of these plastic components have to be joined together. The laser welding of plastics is a technique that has grown enormously within the automobile industry over recent years. Applications range from sensors for controlling various components, and tanks for oil, gasoline, or water, right through to interior or exterior uses.
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02CLEAN AND HYGIENICMedical and pharmaceutical industries
There are many different areas of medical engineering that involve the use of plastics. Laser plastic welding has been an established part of certain applications for years. The medical devices market is a prime example of an area where products containing laser-welded components have been introduced. Microfluidics and chips for analytics are particularly worthy of mention in this regard. In many applications, these kinds of components also take the form of disposables, which can be found in various areas of medical engineering. Other products or devices have assemblies welded onto them. These usually have to be joined in such a way that they are sealed off tightly from the environment. Frequent application areas for medical engineering products include doctor's offices and hospitals. Consequently, the area of hospital care involves a large number of products that are partially made of plastic and are also laser welded.
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03DURABLE AND ROBUSTElectronics Industry
Electronic components are used in many areas of modern life. Most of these components consist of assemblies that are protected from the environment by their enclosures. For example, delicate sensors have a screen to prevent breakage. Other electronic components are protected against splash water and similar threats by placing them inside a housing. The sensitive electronics used in many valves are protected against impacts by a plastic case. This is often tested by carrying out a fall or drop test.
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04FLEXIBLE AND RELIABLETextile Industry
The area of technical textiles covers a huge range of applications, from woven fabrics, laid scrims, and nonwoven fabrics to felt and their associated uses. Typical application areas for large-area technical textiles can be found in the paper industry. Other fields include filter materials or membranes. Technical textiles are also used by the clothing industry. They are often utilized in outdoor clothing and for personal protection.
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05INCREASE ECONOMIC EFFICIENCYProducting goods
In some sectors, plastic processing companies are called upon to manufacture entire assemblies. They are responsible for everything, from forming, joining, and assembly right through to delivery. This is where laser welding makes an important contribution to increasing the throughput and thus the efficiency in production lines.

A variety of service offerings
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LASER SERVICESApplication Laboratory
During process and procedure development, we record all relevant parameters for you and define the process window.
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LASER SERVICESMaterial Tests
We support you in the qualification of plastics for your laser welding process.
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LASER SERVICESCustomized Solutions
The machines of the NOVOLAS WS-AT series are turnkey laser systems for welding plastics.
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