Civil engineering / tunnels / disposal applications

Automatic Welder

Geostar-G7

Civil engineering redefined: With the GEOSTAR G7 hot wedge welding machines for welding geosynthetic plastic sealing sheets (PSS). The workhorse. Undefeated champion in its weight class (17.7 kg). With turbo motor and extra large hot wedge (130 x 50 mm) for maximum welding speeds. Operating unit with integrated voltage display for permanent monitoring of welding parameters and mains voltage, welding wedge replacement in less than 1 minute, generous material input, smooth-motion sliding of the geomembranes thanks to new wedge geometry and three different parking and maintenance positions.

Geostar-G5

Civil engineering redefined: With the GEOSTAR hot wedge welding machines for welding geosynthetic plastic sealing sheets (PSS). The super-fast flexible all-rounder with many accessories welds practically every type of plastic while itself weighing only 16.4 kg. Maximum reduced construction with cast aluminum frame (16.4 kg) and strong performance. With the G5, thinner materials can be welded just as securely as PVC with the steel wedge intended for that purpose. Operating unit with integrated voltage display for permanent monitoring of welding parameters and mains voltage, welding wedge replacement in less than 1 minute, generous material input, smooth-motion sliding of the geomembranes thanks to new wedge geometry and three different parking and maintenance positions.

Unidrive 500

Reliable: Ergonomic handle for balanced pressure during manual welding
Safe: Constant parameters and reliable quality – even with undervoltage
Fast: Up to three times faster than manual welding
Customized: Dual drive for rapid changes in direction
Practical: Compact and lightweight semi-automatic hot-air welder: 9.9 lbs, 11.8 inches high
Flexible: One chrome, steel nozzle for all welding applications
Economical: Maintenance-free, brushless motors
Intuitive: Simple user guidance and operation via digital display

Comet

Lightweight and compact
Digital display of temperature and velocity
Closed loop control of temperature and drive
Easy and user friendly

This compact heavy-duty welding machine is in use worldwide. The small powerhouse is specially designed for the demands of landfills sites, mines and tunnels.

Twinny T7

Multi function display
LQS, WIFI, GPS inside
Approx. 100% higher welding speed (orig. TWINNY T)
Voltage dispaly
Pressure display with acoustic alarm
Maintenance free with speed controlled BL-Blower
3300 W Heating power

Twinny T5

TWINNY T7 and T5 are easier to use, which means less burning of the membrane at the start of the welding
Easier to get good welding results with thinner materials
Contact system is not so critical, more tolerant
Universal, can be used for all weldable geomembranes
Same combiwedge for HD-PE and PVC
Blows away dirt, dries up moisture
Welding speed up to 8 meter/min

Twinny-s

Simple operation
Lightweight
High welding speed
Stepless adjustment of temperature and drive
Perfect welding result even in harsh environmental conditions thanks to hot-air system.

This lightweight tool is optimized for overhead welding and is ideal for thin materials used in civil engineering and tunnel construction. Leister offers a choice between replaceable combi-wedges with or without test channel.

Hot Air Hand Tools

Triac AT

The TRIAC AT is an intelligent hot-air hand tool for welding and shrinking plastics that is suitable for on-site use. It is designed for the needs of even the most demanding professional. Every tool undergoes stringent quality checks prior to leaving the factory in Switzerland. This high-quality hot-air hand tool is equipped for all situations. Its universal areas of application are virtually unlimited. The TRIAC AT will continue to prove its merit in any weather condition and is just as effective outside as it is indoors – all during continuous operation.

Triac ST

Handiness, reliability and versatility are the key arguments in favor of the TRIAC ST. Its two-component handle gives users a perfect grip, while the low weight of less than 1 kg ensures an optimum weight balance. The innovative motor and turbine design, combined with the heating element familiar from the TRIAC AT, enhance the value even more. More than 80 nozzles fit onto the TRIAC ST; these are also compatible with the TRIAC AT and TRIAC S.

Extrusion

Weldplast-S6

WELDPLAST S6 is the world’s highest rated handheld extrusion welder. With an output of 6 kg/h, it is surprisingly maneuverable. It features a brushless, preheat motor, multifunction display and comfortable ergo-grip – making the S6 Leister’s flagship extrusion welder.

Weldplast-S4

The WELDPLAST S4 is the first extrusion welder of its kind with brushless, maintenance-free motor for generating preheated air. Output of up to four kilograms per hour is made possible thanks to the S4’s powerful drive system.

Weldplast-S2

The WELDPLAST S2 is a compact, ergonomically designed workhorse. The handy size extruder puts out two kilograms per hour an can even weld TPO materials without difficulty.

Fusion 3C

The somewhat shorter FUSION 3C provides an astounding output volume of up to 3.6 kilograms per hour.

Fusion 3

With its long and narrow shape, the FUSION 3 enables comfortable work, even on the floor. The somewhat shorter 3C provides an astounding output volume of up to 3.6 kilograms (eight pounds) per hour.

Fusion 2

The FUSION 2 convinces with its ergonomic design. The simple operation and first-class welding quality have helped it to become the breakthrough product.

Testing Instruments

Test Needle (tapered)

The reliable and handy air pressure test manometer from Leister is the perfect solution for testing the integrity of dual track seams with test channel. It is suitable on construction sites for civil engineering, tunneling and landfills. The revised model is now even more secure – in terms of the daily use and for the detection of leaks.

Test Needle

Examo USB

EXAMO performs tests at the construction site – quick, reliable and uncomplicated.

Coupon Cutter

The Leister COUPON CUTTER is a weld test punch proven on building sites for peel, shear and tensile testing. It is ideal in combination with one of the two tensile test tools EXAMO 300 USB or EXAMO 600 USB. That gives you perfect control over the quality of the welded membrane liners at all times. The strong leverage eff ect ensures easy handling and perfect cutting results.

Vaccum Pump

The VACUUM BOX produces a vacuum, generated by air pressure from the VACUUM PUMP. It is placed on a double overlap welding seam for proving its tightness.

Vaccum Bell

The VACUUM BELL is used for testing the tightness of double overlap welding seams. The needed vacuum is ideally generated by Leister’s VACUUM PUMP.