Impermeable membrane price

Impermeable membrane standard name is polyethylene geomembrane, mostly milky white translucent to opaque thermoplastic resin material - made of polyethylene resin. Polyethylene is a polymer, is non-toxic, tasteless, odorless white particles, the melting point of about 110 ℃ -130 ℃, the relative density of 0.918-0.965; impermeable membrane has good heat resistance and cold resistance. Good chemical stability, high rigidity and toughness, good mechanical strength, resistance to environmental stress cracking resistance, tear strength and good performance, as the density increases, the mechanical properties and barrier properties will be increased, heat, and tensile higher strength; acid, alkali, organic solvents, such as corrosion. Impermeable membrane characteristics: 1, seepage coefficient - impermeable membrane has ordinary waterproof materials can not match the anti-seepage effect, HDPE impermeable membrane has a tensile mechanical properties, excellent flexibility and deformation capacity makes it ideal for expansion or contraction of the base surface, can effectively overcome the uneven settlement of the base surface, water vapor permeability coefficient 2, chemical stability - impermeable membrane has excellent chemical stability, widely used in sewage treatment, chemical reaction tanks, landfill landfill. 80 kinds of acid and alkali chemical resistance, high temperature resistance, asphalt, oil and tar, acid, alkali, salt and other corrosive media 3, anti-aging properties - impermeable membrane has excellent anti-aging, anti-UV, anti-break capability, nudity Use of material life of 50--70 years, to provide good material to ensure 4, anti-plant roots -HDPE impermeable membrane has excellent resistance to puncture ability to resist most of the plant roots 5, high mechanical strength impervious to the environment - Anti osmosis membrane with good mechanical strength, tensile strength of 28MPa, elongation of 700% 6, low cost and high efficiency -HDPE impermeable membrane using new technology to improve the anti-seepage effect, but the production process more scientific, speed Jie, product cost so but lower than traditional waterproof material, the actual calculation using the general engineering HDPE impermeable membrane to cost savings of about 50% in July, the construction speed - impermeable membrane has a high flexibility, a variety of specifications laid forms to meet different projects seepage, using hot-melt welding, weld strength, construction convenient, rapid and healthy 8, environmentally friendly non-toxic - material impermeable membrane materials used are non-toxic and environmentally friendly materials, seepage is a common principle of physical changes, does not produce any harmful substances, is the best choice impermeable membrane welding, environmental protection, farming, drinking water tank: 1. Hot Wedge Welder welding process is divided into: Adjust the pressure set temperature set speed lap weld inspection device membrane into the machine to start motor pressure welding. 2. seams without oil, dust, surface HDPE geomembrane lap section should not contain sediment and other debris, when the debris must be cleaned prior to welding. 3. When the welding start every day, you must first try to weld samples at the scene of a 0.9mm × 0.3mm, the lap width of not less than 10cm, and peel and shear test Rally scene, qualified after the sample, you can use that time to adjust good speed, pressure, temperature is the welding. Be marked on the sample date, time, ambient temperature. Hot wedge welder in the welding process, the need to pay attention to the operation of the welding machine, according to the actual situation at the scene to fine-tune the speed and temperature. 4. Weld requirements neat, attractive, without sliding welding, jump away phenomenon. 5. In the case of the geomembrane is not long enough, you need to splice long should first transverse weld is good, then welded longitudinal seam, the lateral distance greater than 50cm should weld a T-shaped, can not cross. 6. adjacent geomembrane weld seam overlap should be wrong, the junction formed between the membrane block, should be T-shaped, to minimize the cross, at the intersection of the longitudinal mode applied to the weld extrusion welder strengthened. 7. When welding film allowed extrusion die off, laying HDPE geomembrane, according to local temperature changes in the magnitude and HDPE geomembrane performance requirements, set aside the amount of stretching deformation caused by temperature changes. 8. When the temperature when welding portable welding temperature control indicated below 200 ℃, use a clean cloth or cotton dust them off and then welded, if necessary re-polish, avoid hand wipe. 9. When seams condensation, when wet, silt and other effects, treatment after welding. 10. In rain during or seams of moisture, dew, or can not be welded case of large sand, but to take protective measures is excluded. 11. When the temperature is below 5 ℃, the construction should be in accordance with regulatory requirements, if necessary, then construction, welding respond welder before preheating. 12. The extrusion welding machine in the welding process, should always check tip of the slider, the more serious wear and tear should be replaced sliders, so as not to damage the membrane surface. 13. geomembrane should be used during welding generator power regulator good performance, the use of local power in exceptional cases, you must use the regulator. HDPE impermeable membrane construction method: 1, the bottom should be extended to high, do not pull too tight, should leave more than 1.50% of the web, to prepare for local subsidence stretch. Taking into account the actual situation of the project, from top to bottom of the slope take the laying sequence; 2, two adjacent longitudinal joints should be in a horizontal line, should be staggered over 1m; 3, the longitudinal joints should foot from the dam, curved legs at 1.50m above, should be located in the plane; 4, after the end of the first slope field; 5, when the slope laying show the film should be directed substantially parallel to the maximum slope line.