TECHNISSIS - Leister - Landfill Construction

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Welding of geomembranes for landfill sites
Reliable and durable

COMET

When it comes to constructing storage sites, the sealing system is the heart of the installation and it is this system's reliability which is crucial in determining the site's long-term safety. HD-PE, PP, PVC or TPO is usually used as the bottom geomembrane and can be up to 3 mm thick. The top geomembrane over the bulk goods generally consists of a thinner material. Leister offers welding machines for all requirements: the hot-wedge and combi-wedge machines are designed differently in terms of welding pressure. Various models are available, from the most powerful GEOSTAR hot wedge welding machines to the lightweight TWINNY S. All tools feature special nozzles, hot wedges and pressure rollers, which can be used to double weld the sheets which have been laid in an overlapping arrangement. After welding, the test needle and compressed air can be used to check the integrity of the test channel which has just been created. A version with a USB memory system is also available for certain machines, enabling all relevant parameters to be recorded. Leister also offers the EXAMO, VACUUM BOX, and vacuum bell tools for additional inspection of the weld seam

Overlap welding of plastic geomembranes in the construction of storage sites
Welding seam quality which can be inspected
Welding of details

Leister has the solution
Leister offers various hot-wedge and combi-wedge machines for welding HD-PE, PP, PVC or TPO materials. Welding seam tensiometers improve safety. A broad spectrum of different hand welding tools completes the range.

Efficient welding with machines providing a high welding pressure, including for steep pitches
Lap welds with test channel
Hand extruders for the extrusion welding of connections and details
Tensiometers for checking the tensile load and integrity
Recording of data with a USB memory system
Wide range of hand welding tools and accessories

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.

TRIAC ST

Handiness, reliability and versatility are the key arguments in favor of the TRIAC ST.

Extrusion Welders

FUSION 2

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

FUSION 3

With its long and narrow shape, the FUSION 3 enables comfortable work, even on the floor.

FUSION 3C

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

WELDPLAST S2

The WELDPLAST S2 is a compact, ergonomically designed workhorse. The handy size extruder puts out two kilograms per hour without difficulty.

WELDPLAST S2 PVC

The WELSDPLAST S2 PVC has integrated corrosion protection and has been especially designed to satisfy the high requirements of PVC extrus...

WELDPLAST S4

The WELDPLAST S4 is the first extrusion welder of its kind with brushless, maintenance-free motor for generating preheated air. Output of....

WELDPLAST S6

WELDPLAST S6 is the world's highest rated handheld extrusion welder. With an output of 6 kg/h, it is surprisingly maneuverable.

Hot-wedge Welders

COMET

The small powerhouse COMET is specially designed for the demands of landfills sites, mines and tunnels.

COMET USB

COMET USB's memory system is designed for use on construction sites. Because this compact hot-wedge welding machine records all relevant ...

GEOSTAR G5

The super-fast flexible all-rounder with many accessories welds practically every type of plastic while itself weighing only 16.4 kg.

GEOSTAR G7

The workhorse. Undefeated champion in its weight class (17.7 kg). With extra amounts of driving force and large welding wedge (130 x 50 mm).

Combi-wedge Welders

TWINNY S

This lightweight tool TWINNY S is optimized for overhead welding and is ideal for thin materials used in civil engineering and tunnel con...

TWINNY T

The TWINNY T is excellent for welding PVC and other thin or soft membranes.

TWINNY T USB

TWINNY T USB makes data storage and is excellent for welding PVC and other thin or soft membranes

Semiautomatic hot-air tools

UNIDRIVE 500

The UNIDRIVE 500 semi-automatic welding machine combines manual and automatic welding in a 4.5 kg handy plastic welding device with a service-friendly brushless motor. Thanks to its overlap technology, it's ideal for welding various thermoplastic membranes such as PVC and TPO.

Testing instruments

Test needle

Air pressure test manometer used in civil engineering for proving the tightness of double welding seams

COUPON CUTTER

Robust weld test cutter for use in civil engineering.

EXAMO USB

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

VACUUM PUMP

Pump to generate a vacuum in the VACUUM BOX

VACUUM BELL

Testing bell for proving the tightness of double overlap welding seams in civil engineering