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Seam of special composite geomembrane

Seam of special composite geomembrane :

(1) The joint treatment of special composite geomembrane is the key procedure of construction, which directly affects the operating life of the project. According to the quality inspection, the hot welding method is ideal. (It can also be glued with special glue.) The heat welding method is the surface heat treatment of the PE geomembrane, so that the surface is melted and then integrated into one by pressure.

(2) The geomembrane is laid in a certain direction, and a certain PE film and PET non-adhesive layer are reserved on both sides of the geomembrane. When laying, the geomembrane of each unit should be adjusted to facilitate the welding of the two geomembranes.

(3) After the geomembrane is laid, it should be pressed with a sand bag to prevent the wind from moving, and the edge joints must be free of dirt, moisture and dust.

(4) Before welding, adjust the PE film on both sides of the joint to make a certain broadband, and it is flat and without wrinkles.

(5) When welding, technicians with certain experience are welded, and welding is performed using a special welding machine. To adjust the temperature and speed (also can be glued).

According to many years of practice, the thickness of the geomembrane is not less than 0.25mm. If it is too thin, it may cause pores, and it is easy to be damaged during construction to reduce the anti-seepage effect. In the construction of geomembrane, special attention should be paid to the laying should not be too tight, not wrinkle, and the splicing should be firm. It is necessary to strictly follow the technical specifications for construction, and to complete five quality checks such as preparation, laying, splicing, inspection and backfilling.


First, the correct joint treatment method can extend and protect the life of the project. According to the inspection of various quality, the method of hot welding the joint is effective and safe, through the geomembrane The surface is heated and then pressure-operated to allow the seams to completely dissolve together.

Second, the laying of geomembrane is also very important for joint welding. If the geomembrane is laid without any regularity, it will bring a lot of trouble to the welding work, not only the quality of the welding. The impact will also slow down the progress of the welding.

3. After the geomembrane is laid, the joints should be protected. The joints should not be contaminated. At the same time, there should be no moisture and dust at the joints. At the same time, the geomembrane should be protected to avoid The phenomenon of movement appears, otherwise it is not conducive to joint welding.

Fourth, in the joint welding, to maintain the integrity of the geomembrane, do not let the geomembrane wrinkle phenomenon, otherwise it will affect the welding work.

5. The welding work of the joints is carried out by experienced technicians, and at the same time, the welding machine of good quality is also required to work in order to ensure the success rate of joint welding.

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