초록 ▼

A method for producing polyolefin resins granules are disclosed, which comprises extruding by using a homodirectional (co-rotating) twin-screw kneading extruder a polyolefin resin from a die nozzle having a diameter of less than 2 mm and a discharge amount per hole of 0.5-8 Kg/hr into warm water of

A method for producing polyolefin resins granules are disclosed, which comprises extruding by using a homodirectional (co-rotating) twin-screw kneading extruder a polyolefin resin from a die nozzle having a diameter of less than 2 mm and a discharge amount per hole of 0.5-8 Kg/hr into warm water of 5-90.degree. C. which is lower than a temperature of the resin by 140-220.degree. C., and cutting the extrudate with a cutter blade in the warm water. According to this invention, uniformly dispersed compounds are obtained, and switching of a raw resin can be done speedily and economically, and further, resin granules of a desired shape can be produced.

대표청구항 ▼

[ What is claimed is:] [1.] A method for producing polyolefin granules which comprises the steps of:extruding by using a homodirectional twin-screw kneading extruder a melted polyolefin resin from at least one die nozzle into water having a temperature in the range of 5-90.degree. C., wherein the wa

[ What is claimed is:] [1.] A method for producing polyolefin granules which comprises the steps of:extruding by using a homodirectional twin-screw kneading extruder a melted polyolefin resin from at least one die nozzle into water having a temperature in the range of 5-90.degree. C., wherein the water temperature is lower than the temperature of the melted resin by 140-220.degree. C. and wherein said die nozzle is provided with an exit hole having a diameter of less than 2 mm and the resin discharge amount per exit hole is 2-8 Kg/hr, andcutting the extrudate with a rotating cutter blade at a peripheral speed of 13-27 m/sec in the water.