1. Equipment Overview
The geomembrane welding machine adopts a mechatronic design, with the characteristics of small size and light weight, which is convenient for field operation. It can realize double weld lap welding, and has the advantages of high temperature control accuracy, high welding strength and good sealing effect. By adjusting the welding pressure, setting the welding temperature and speed, it can adapt to the welding needs of geomembranes of different thicknesses and materials.

2. Working principle
The working principle of the geomembrane welding machine mainly involves high-temperature heating or high-frequency vibration and pressure, so that the bonding area of the geomembrane is melted or hot-melted and fused together to form a firm welded joint. Specifically, some models heat the bonding area of the geomembrane at high temperature to melt and connect it together; some models use high-frequency vibration and pressure to generate high temperature and high pressure between the two geomembranes, thereby achieving welding.

3. Components
Geomembrane welding machines usually consist of multiple parts, including the main unit, control cabinet, operating table, welding head (or vibration head, welding gun), protective cover, pressure wheel, joystick, etc. Among them, the welding head (or vibration head, welding gun) is the key component for performing welding operations, and the protective cover is used to protect the operator from high temperature or vibration.

4. Application areas
Geomembrane welding machines are widely used in various anti-seepage projects, such as landfill anti-seepage, waste liquid drainage tanks, public works, building foundation geomembranes, tunnel waterproofing, mine waterproof linings, reservoirs, irrigation ditches, dam anti-seepage membranes, aquaculture ponds, swimming pool linings, oil storage tank anti-seepage, chemical reaction tanks, sedimentation tanks, etc.

5. Operation procedures and precautions
Operation procedures:
Adjust the welding pressure, set the welding temperature and speed.
Check the weld overlap to ensure that there is no oil, dust and debris at the joints.
Load the geomembrane into the welding machine and start the motor for pressurized welding.
During welding, you need to pay attention to the operation of the welding machine at any time, and fine-tune the speed and temperature according to the actual situation on site.

Notes:
The joints must be kept clean, free of oil, dust and debris.
At the beginning of welding every day, a test sample must be welded on site, and peeling and shearing tests must be carried out to ensure that the sample is qualified before formal welding.
The welds must be neat and beautiful, and there must be no slip welding or jumping.
When the length of the geomembrane is not enough, it is necessary to splice in the long direction. The transverse welds should be welded first, and then the longitudinal seams. The transverse welds should be T-shaped when they are more than 50cm apart, and they must not cross.
When the temperature of the welding machine indicated by the temperature control of the portable welding machine is lower than a certain value (such as 200℃), it should be wiped off with a clean cloth or cotton yarn before welding, and it should be re-polished if necessary.
Welding cannot be carried out during rain or when there is moisture, dew, or heavy sand in the joints, except when protective measures are taken.
When welding, a generator with good voltage stabilization performance should be used for power supply. In special circumstances, when local electricity is used, a voltage stabilizer must be used.

6. Maintenance and care
Clean and maintain the geomembrane welding machine regularly to ensure that the equipment is in good working condition.
Check the wear of vulnerable parts such as welding heads and pressure wheels, and replace severely worn parts in time.
Lubricate and tighten the equipment regularly to ensure reliable connections between components.