METHOD AND WEATHERSTRIPS FOR VEHICLE USING SCF EXTRUSION SYSTEM

摘要

A weather strip manufacturing method for vehicle using the supercritical extrusion system is provided to be recycled and fire retardant since the environment-friendly thermoplastic elastomer material is used. A weather strip manufacturing method for vehicle using the supercritical extrusion system comprises following steps: a step(S10) for inputting thermoplastic elastomer; a step(S20) for inputting the supercritical fluid which has the property of the fluid and property of the gas at the same time; a step(S30) molding through the molding extruder for uniformly diffusing with the thermoplastic elastomer and supercritical fluid; a step(S40) for transferring the weather strip extruded through the molding extruder and outputting to outside. The molding extruder is comprised of an exclusive screw internal pressure cylinder and an exclusive dice. The step for outputting the weather strip to outside includes a step for extruding the melted resin through the V-shaped head for the extrusion.