The Production Process of Geomembrane
Presumably, everyone is not new to a geomembrane. Now it can be seen in many industries. The anti-seepage effect of LDPE geomembrane manufacturers in engineering construction is still relatively significant. Then everyone is involved in the production process of geomembrane Do you understand?
Geomembrane production generally uses polyester and polypropylene fiber layers after carding and netting, which are pre-needle-punched into a roll, and then the pre-punched fiber web is moved to the main needle punching machine to lay one or more layers on the base fabric for main needle punching low price aquaculture geomembrane. The base cloth is set on the main needle punching machine in advance, and the PW needle punching machine is equipped with a plurality of needle wrenches for needle punching on the outer two sides of the ring-shaped kibble.
Geomembrane is used as a conveyor belt on the paper machine. Therefore, it is required to have a ring shape and a long circumference without seams. The Pmf needling machine is equipped with a stand. The middle beam of the needling machine can be separated from the mainsail and hung on the stand. The pierced geomembrane can be removed from one side, and the base fabric can also be put on from one side.
The special needle punching machine for producing HDPE geomembrane for sale is different from the needle punching machine. The stripped web is disintegrated into four pieces and folded and expanded by 90 degrees respectively to form a web with a width of about 0.5m. The web exceeds the width of the drum by only 3m. The fiber web after the needle penetration rotates outside the drum with the rotation of the wave barrel to form a seamless endless belt.
While the drum rotates, the chains distributed on the periphery of the drum move longitudinally. In order to make the newly-entered web and the needle-punched web evenly connected into a ring HDPE geomembrane manufacturers with a certain width, the maximum width that can be processed is 6m. The needle punching machine is a cantilever type with a total of four needle wrenches, two ribs L stab inward, and two stabs from the inside out.
Under normal circumstances, chemical fibers are placed vertically in the area where the needle is inserted and spread along the periphery of the geomembrane so that the geomembrane produced by the needle punching machine has the characteristics of high compressive strength and small elongation. The produced chemical fiber blanks are covered with a base fabric on the needle punching machine and the main needles can be used to obtain a higher-grade high quality HDPE geomembrane.
Geomembrane plus geotextile is an important tool to ensure the leakage of the sanitary landfills when the pollution liquid formed by the solid waste of sanitary landfill is preventing the pollution of the surrounding environment. What are the main factors of membrane stress?
The horizontal anti-seepage layer composed of high quality LDPE geomembrane and clay is one of the main means to prevent the leakage and diffusion of contaminated liquid to the surrounding environment. Among them, the geomembrane is generally HDPE geomembrane, and a nonwoven fabric is generally laid on the geomembrane as a protective layer to prevent sharp objects from piercing the geomembrane.
The permeability coefficient of non-destructive geotextile is 10-12cm/s, which is the main structural form of the horizontal impervious layer. There are many factors that affect the wholesale textured geomembrane stress level, including the geotechnical characteristics of clay, the mechanical properties of the geomembrane itself, whether the geomembrane is damaged, the way the geomembrane is laid, the load on the overlying landfill, and the shape of the slope.
Although the geotextile has a strong resistance to deformation, tensile tests have shown that the yield elongation of the geotextile is 16%, and the final elongation exceeds 700%. It can be seen from this that the stress factor rather than the deformation control the safety of the low cost textured geomembrane. The safety control of the geomembrane is mainly achieved by controlling the state and magnitude of the stress on the geomembrane.