Laser Plastic Welding

Leister Technologies AG Experienced engineers and technical specialists at Leister Technologies AG develop products and systems for plastic welding and process heat applications. With our technologies – hot air, contact heat, extrusion, laser, and infrared – and our passion for innovative solutions, we have a significant influence on our market segment and set standards worldwide. Our employees take pride in manufacturing high quality products. Close cooperation with our global clientele, distributors and suppliers is essential to our mutual success. Local experts provide sales and service support...

World Leader in Plastic Processing Leister Technologies AG provides a wide-array of technologies to process plastic within a variety of applications. Our Industrial Heating and Laser Systems business lines offer application-specific products and accessories to heat, join, weld, shrink and form various plastics. We know how. Industrial Heating and Laser Systems Plastic Welding Products Leister offers three technologies for industry: Hot air, infrared and laser. We thus cover a large part of the applications of industrial process heat and plastic bonding. The Leister product range for plastic welding...

Laser Plastic Welding 1 laser beam 2 joining pressure 3 transparent joining partner 4 absorbing joining partner 5 weld seam 6 melting zone The laser welding principle Laser Plastic Welding (LPW) has established itself worldwide through outstanding performance and application-specific solutions. Innovative markets such as the automotive industry and medical technology are increasingly using laser welding of plastics. The advantages of laser welding are convincing: • contactless energy input • minimal thermal and mechanical component stress • simple joint geometry • contamination-free • optically...

Comprehensive know-how in Laser Plastic Welding As one of the pioneers in laser welding of plastics, Leister delivered and integrated the first turnkey system at the turn of the millennium. Since this time, Leister has delivered several hundred systems in use in various industries all over the world. Our goal is to develop specific solutions together with our customers. Our many years of expertise in development, application and sales enable us to provide individual and competent advice for specific applications in laser welding of plastics.

Versatile use Applications in laser welding of plastics are versatile and can be found in various industries. Whether small, narrow weld seams or large-area welds – weld seams produced with the laser are visually appealing and are often integrated into the design of a component. The process has become particularly established for components that required reproducible weld seam properties, such as a hermetic seal for fluidic components. Mobility Mobility is the headline of individual freedom of movement. Whether by automobile, plane, train or bicycle. Laser welding of plastics is used everywhere....

Laser welding of plastics is the preferred method in medical technology for applications with high safety and hygiene requirements. This is because laser welding produces contamination-free and reliable joints. Many electronic components are protected from environmental influences by a plastic housing. Sealing with laser beams has established itself in various applications.

Customized solutions 1 | Consulting 5 | ervice S and support 2 | Welding tests Leister provides its customers with comprehensive and competent support in evaluating the optimum welding process for specific applications. Proposals for material selection, support in component design through to the selection of the welding process are the first steps, which are checked by welding tests in one of our application centers. Only then is the implementation discussed. Of course, we also accompany our customers during installation and after delivery through one of our service centers.

Suitable material Functional design The right choice of material is also crucial for the success of laser welding of plastics. In numerous tests with different materials, we have developed a welding matrix and published it on the Leister homepage: Weldable materials with laser. The design of the welding zone is subject to general and process-related guidelines for laser welding of plastics. Depending on the application, these can be requested from Leister.

The different laser welding processes The variety of welding processes results in individual, material and application-specific solutions. Depending on the process, additional options for process and quality control are available. Contour welding • Point-shaped laser beam • High flexibility • Any 2-D-ironing lines • Ideal for frequent component changes Globo welding Simultaneous welding • Any joining geometries in two or three dimensions • Weld without a clamping device • Optimum synchronization of contact pressure and energy input • Suitable for robotics • Short process time • No relative movement...

Quasi-simultaneous welding Mask welding • Point-shaped laser beam • Lots of flexibility • Bridges gaps • Suitable for small batches and mass production • Linear laser beam • Any joining geometry in one plane • Fast and flexible • Suitable for micro and macro applications Radial welding Roller welding • Suitable for a wide range of diameters • No rotation • High throughput • No clamping device required • Linear joining geometry in two dimensions • Welding without clamping device • Optimum synchronisation of contact pressure and energy input

Standalone systems Leister standalone systems handle the entire laser welding process. Movement, laser and clamping device are accessible and individually storable via input masks. This means that different components can be welded with one system.

Integrated systems The Basic systems from Leister are prepared for integration into production lines or turnkey systems. Their modularity allows integration into different production systems.