Optical cable foaming packing gasket granule material and method for producing same

The invention relates to an optical cable foaming packing gasket granule and a manufacturing method thereof; the mixture ratio of the materials and the weight parts are: 50-60 parts of low density and high pressure polyethylene, 15-25 parts of high density and low pressure polyethylene, 10-30 parts of polypropylene, 0.5-1.5 parts of Tissuemat E, 0.5-1.5 parts of stearic acid, 0.4-1.2 parts of calcium stearate and 0.4-1.2 parts of four pentaerythritol fat which are prepared by heating kneading, extrusion, cooling, drying and grain-sized dicing. The granule has the density of 0.944 plus or minus 0.015g/cm<3>, tensile-strength of being more than or equal to 20MPa, the elongation of break of being more than or equal to 580 percent, the electric volume resistivity of being more than or equal to 1.0 multiplied by 10 <13> Omega m, the oxidation induced period of being more than or equal to 30 min, the solution moving speed of being less than or equal to 2.0g/10min and moisture of being less than or equal to 0.08 percent. The granule is prepared by three steps of mixing and kneading of material, fusing and extruding strip formation of the kneaded objects and cooling and grain-sized dicing of the strip, is exclusively used for preparing the material of optical cable foaming packing gasket, and has the advantages of light weight, saving material, being applicable to foaming and joint connection with PBT plastic, and the like.