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Welding of Geomembranes for Landfill Sites

Reliable and Durable

Plastic Welding Civil Engineering Landfills
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. HDPE, PP, PVC or TPO is usually used as the bottom geomembrane and can be up to 3 mm (118 mil) thick. The top geomembrane layer (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 and technologically advanced, GEOSTAR wedge welder, 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 overlapped 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 thermoplastic 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 HDPE, 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 high welding pressure, including for steep pitches
  • Overlap welds with test channel
  • Handheld extrusion welders for the welding of connections and details, and repairs
  • 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-wedge Welders

GEOSTAR G7/G7 LQS

The workhorse. The undefeated champion in its weight class (17.7 kg / 39 lbs.) With extra amounts of driving force and large welding wedge (130 x 50 mm).

Leister hot-wedge welder GEOSTAR G7

GEOSTAR G5/G5 LQS

The super-fast and flexible all-rounder with many accessories welds practically every type of plastic while itself weighing only 16.4 kg / 36 lbs.

Leister Heizkeil-Schweissautomat GEOSTAR G5/G7

COMET USB

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

COMET USB Hot-wedge welder

COMET

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

COMET Hot-wedge welder

Combi-wedge Welders

TWINNY T USB

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

TWINNY T USB Combi-wedge welder

TWINNY T

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

TWINNY T Combi-wedge welder

TWINNY S

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

TWINNY S Combi-wedge welder

Extrusion welders

WELDPLAST S6

WELDPLAST S6 is the world's highest rated handheld extrusion welder. With an output of 6 kg / 13.2 lbs per hour, the S6 surprisingly maneuverable.

Hand-Extruder WELDPLAST S6

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 4 kg / 8.8 lbs. of extrudate per hour is made possible thanks to the S4's powerful drive system.

WELDPLAST S4 Extrusion welder

WELDPLAST S2

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

WELDPLAST S2 Extrusion welder

FUSION 3

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

FUSION 3 Extrusion welder

FUSION 3C

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

FUSION 3 C Extrusion welder

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.

FUSION 2 - Air heated extrusion welder

WELDPLAST S2 PVC

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

Hand-Extruder WELDPLAST S2 PVC

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.

Leister TRIAC AT Heissluft Handgerät

TRIAC ST

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

Leister Hot-air Handtool TRIAC ST

Semiautomatic hot-air tools

TRIAC DRIVE AT

The TRIAC DRIVE AT are up to three times faster than manual welding. The unique, semiautomatic welding tool.

hot-air welder TRIAC DRIVE AT

Automatic Welders

TRIAC DRIVE ST

More consistent and up to three times faster than manual welding with the TRIAC DRIVE ST.

TRIAC Drive ST

Testing instruments

EXAMO USB

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

EXAMO Testing instrument

COUPON CUTTER

Robust weld test cutter for use in civil engineering.

Leister Testing instruments Coupon Cutter

Test needle

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

Leister Air pressure test manometer

Test needle (tapered)

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

Leister Air pressure test manometer tapered

VACUUM BELL

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

VACUUM BELL

VACUUM BOX

Weld seam testing made quick and simple

VACUUM BOX

VACUUM PUMP

Pump to generate a vacuum in the VACUUM BOX

Leister Vacuumpump

Item added to watchlist