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Due to the polymer's high molecular reorientation during the heating and extension process in the production of geotextile polypropylene格栅, the intermolecular bonding strength is enhanced, achieving the purpose of increasing its strength. Its elongation rate is only 10% to 15% of the original sheet material. If the geotextile格栅Carbon black and other anti-aging materials are added to enhance its durability, providing excellent resistance to acids, alkalis, corrosion, and aging. Mine-grade geogrids, also known as double-stretched plastic mesh false ceiling for underground coal mines, are commonly referred to as false ceiling mesh. These geogrids are specifically designed and manufactured for false ceiling support and gangway side support during underground coal mining operations. They are made by using several high molecular polymer resins and adding other modifiers, then going through processes such as heating, extrusion, shaping, punching, stretching, forming, and rolling.Square or rectangular polymer mesh formed by stretching, which can be either unidirectional or bidirectional stretching depending on the stretching direction during manufacturing. It involves punching holes into polymer sheets (usually made of polypropylene or high-density polypropylene) after extrusion, followed by directional stretching under heating conditions.Mining geogrids and metal woven meshes are lighter in weight, stronger, isotropic, antistatic, non-corrosive, and flame-retardant compared to plastic woven meshes. They are a new type of mesh material for underground coal mine support engineering and civil engineering. Unidirectional stretched grids are made by stretching only along the length of the sheet; bidirectional stretched grids are produced by further stretching the unidirectional stretched grids perpendicular to their length.