fabric for bag lining Manufacturers

Film welding method 1. The welding temperature, speed and pressure are determined after experiments and inspections. 2. The welding should be stopped when the ambient temperature is too high or too low. 3. The welding rod is the same as the membrane material. 4. Every piece of oilfield impermeable membrane is welded on the day of laying. 5. The edge of the upper impermeable membrane at the weld should be polished to an inclination angle of 45° to improve the welding quality of the weld.

The composite geomembrane is formed by heating one side or both sides of the film in the far-infrared drying box, and pressing the geotextile and the geomembrane together by means of guide rollers.

The significance of the high-density hdpe geomembrane to resist environmental stress cracking is to use elastic basic theory and viscoelastic model to clearly propose a test standard for temperature stress and temperature stress relaxation.

The geomembrane is damaged during transportation and on-site construction, which changes the destruction mechanism of the geomembrane and affects its anti-permeability and stress performance. The composite geomembrane uses hot melt technology to bond the membrane to the cloth. The bilateral geotextile can effectively protect the geomembrane from damage. However, in the process of manufacturing and building connection, hot melt technology will inevitably cause thermal burns and defects of the soil membrane, which has the hidden danger of preventing penetration.

The purpose of geomembrane is to use its anti-permeability effect. Geomembrane should be impermeable to the molecular structure and manufacturing process. However, due to the unevenness and defects in manufacturing, the commonly used geomembrane must not leak. It's just that it is relatively difficult to permeate and what is more important is whether the geomembrane can maintain its anti-seepage performance under the action of long-term water head when it contacts the actual soil (or other materials). Due to the uneven contact surface, rough soil particles, large local deformation of the soil, etc., the geomembrane may be broken or torn under the action of high water head, and its anti-seepage performance will be lost or weakened. Therefore, corresponding anti-seepage tests are also required.