Supply of Yangzhou [subway tunnel impermeable membrane + landfill impermeable membrane] speak with the quality Contact: * Li * Phone :182 - 6481 - 7103 QQ :46-37-96-887 (space with kinds of geotextile material, impermeable membrane pictures) please call - plus Q-buy, look forward to sincere cooperation with you! ! Geomembrane welding: hot wedge welding machine welding process is divided into: adjust the pressure setting temperature set speed inspection of weld lap loading film into the machine to start the motor pressure welding. 2 seams shall lap segment of facial oil, dust, HDPE geomembrane should not be there are sand and other debris, debris must be clean before welding. 3 daily start of welding, must be first in the field test welding a 0.9 mm x 0.3 mm or the sample lap width of not less than 10cm, and the site of the tensile machine peel and shear test after passing the sample can be adjusted with the time good speed, pressure, temperature, it is welded. The sample to be marked with the date, the time, the ambient temperature. Hot wedge welder in the welding process, the need to pay attention to the operation of the welder, fine-tune the speed and temperature according to the actual situation in the field. Weld neat, attractive, must not slip welding jump away phenomenon. (5) In the case of geomembrane is not long enough, long stitching, first transverse weld, then welded longitudinal seam, the transverse weld separated by more than 50cm into a T-shaped, may not cross. 6 adjacent geomembrane weld should as far as possible staggered joint lap, the membrane block formed between nodes, T-shaped, to minimize cross-shaped, the longitudinal mode applied to the weld at the intersection of extrusion welder enhanced. Welding film allowed to press out the dead fold, the laying of HDPE geomembrane, according to the local temperature variation and HDPE geomembrane performance requirements, reserve stretching deformation caused by temperature changes. When indicated by the temperature control of the mobile welder welding temperature is below 200 ° C, use a clean cloth or cotton dust them off and then welded, if necessary, should be re-polished, should hand wipe. When seams condensation, moisture, sand and other impact treatment after welding. 10 during the rain or joints of moisture, dew, or welding is not possible in the case of large sand, except to take protective measures. 11 when the temperature is below 5 ° C, in accordance with the specification requirements should not be construction, if construction must deal with before welding welding preheating. 12. Extrusion welding machine welding process should always check the gun head slider, slider severe wear should be replaced, so as not to damage the membrane surface. 13. Geomembrane welding should be used regulator good performance generator power, must be used in exceptional circumstances the use of local electricity regulator.