In the process of repairing old water conservancy buildings, composite geomembrane is usually used as an impermeable material for the building.
The splicing quality is the key to the success or failure of the composite geomembrane’s anti-seepage performance. The splicing method is usually constructed by hot-melt welding. The membrane and the membrane are usually welded by a dual-drive self-propelled environmental geomembrane manufacturers welding machine. The overlap width of the weld is 10cm, and there is a 10mm wide cavity between the two welds. The cloth and the cloth are used Portable sealing machine, polyester thread T-shaped stitching. Note that before the formal welding, test welding should be carried out according to the climate characteristics of the construction area to determine the walking speed and welding temperature. During the construction process, the walking speed of the welding machine should be controlled at 0.8-1.2m/s, and the welding temperature should be 240-260℃ to ensure that the welding quality of the composite LDPE geomembrane manufacturers meets the design requirements. Before welding, it is best to lay a long wooden board under the seam of the geomembrane so that the welder can walk on a flat base surface to ensure welding quality.
In addition to the quality of the material, to further improve the performance of the composite geomembrane, it is necessary to work hard during construction.
In order to facilitate the construction and ensure the quality of splicing, the composite low cost textured geomembrane generally uses a wide width to reduce the amount of splicing on site. Before construction, according to the width of the material and the length of the site, the appropriate length should be cut in the factory, spliced into blocks of the required size and rolled into a roll. Reserve about 10cm of non-composite layer on both sides (that is, the cloth and membrane are separated, called margins) for the lateral connection of the geomembrane. The damaged area of the geomembrane when the weld is sheared mainly occurs in the weak part of the joint between the weld area and the geomembrane. Therefore, we should pay enough attention to the weld construction.