Nous sommes Leister


Leister Technologies AG développe des produits et des systèmes pour le soudage des plastiques et les applications de chaleur industrielle. Grâce à nos technologies comme l'air chaud, le laser et l'infrarouge, et à notre passion pour les solutions innovantes, nous sommes en mesure d'influencer considérablement notre segment de marché et d'établir des normes dans le monde entier.

Our employees are proud to produce high-quality premium products with strong, reliable performance. Close cooperation with our worldwide customers, sales partners and suppliers is essential for mutual success. Local experts provide sales and service support to our customers in over 100 countries. Eight country subsidiaries and 130 sales and service partners guarantee our worldwide presence and customer proximity.

Professional and home use

Extrusion welders, blowers and heat guns from Leister are in demand worldwide and in use everywhere to thermally join or form plastics in apparatus and container construction. They impress with their welding consistency and process safety. Applications include 3D printing with an automated extruder on a robotic arm, aquaculture construction and repair or hard plastic boats, inflatable boats, as well as ballast and fresh water tanks made from plastic membranes.


When tunnels or landfills are built, the quality of the welded seam is the top priority. This is because leaks would have fatal consequences for people and the environment. Geomembranes made of PE that are used for the seam must therefore be welded tight in the long term. Welding machines and hot air blowers from Leister are used for this.



Infrared emitters

Infrared heaters from Leister are also used in various industries where fast response times and precise temperature control are required. Typical applications are laminating, thermoforming and riveting.


Laser welding

Leister laser systems are used for customized solutions and for industrial production. Leister has great expertise in the precise, durable and, above all, contamination-free joining of sensitive parts such as fluid-carrying components. Laser systems from Leister are also used for welding housings, for example rear lights of vehicles. Even different materials such as plastic and metal can be permanently joined with Leister lasers. All plastic laser solutions are customized, modular and economical application systems that Leister experts develop together with their customers.


Founded in 1949 as a sole proprietorship, Leister has grown continuously and has developed into a globally present and very successful company. Leister is the market leader in innovative technologies for processing plastics.


  • Karl Leister fonde l'entreprise individuelle "Karl Leister Elektro-Gerätebau" à Solingen, en Allemagne.


  • L'entreprise individuelle, Leister Process Technologies, avec les divisions Leister et Axetris et les entreprises nationales, est transformée en une structure de groupe.
  • Fondation de Leister Technologies AG


  • produit intelligent de Leister GEOSTAR G7 LQS avec enregistrement numérique des paramètres


  • Lancement de l'initiative de transformation numérique avec l'application myLeister et d'autres produits de l'IdO


  • Début de la construction à Sarnen : Agrandissement du bâtiment de l'entreprise et de l'entrepôt de petites pièces entièrement automatisé
  • Acquisition de Krelus AG pour élargir le portefeuille de produits de Leister avec des émetteurs infrarouges puissants
  • Académie Leister pour la formation spécialisée


  • Début de l'extension du bâtiment de Sarnen et consolidation de la production chez Leister Technologies AG à Sarnen


  • Lancement de la plate-forme web myLeister avec de nouveaux services numériques pour les clients

Facts and figures

Here is an overview of the most important facts and figures of our company.


  • 1949 en tant qu'entreprise individuelle

Forme juridique

  • 2011 - une société anonyme


  • une société du groupe Leister


  • environ 400 en Suisse, dont 15\nen matière de recherche et de développement

Part des exportations

  • 98%


  • Sarnen, Suisse
  • Shanghai, Chine


  • 8 entreprises nationales sur 3 continents
  • 130 distributeurs avec des centres de vente et de service dans 100 pays

Portefeuille de produits

  • Composants, systèmes, dispositifs, machines

Production and logistics

Our production sites in Switzerland and China are an important part of our value chain. In order to always guarantee high quality, we strive for long-term partnerships throughout the entire supply chain and enter into quality agreements with our suppliers.