NOISE AND WEIGHT REDUCTION AIR DUCT MANUFACTURING METHODS

摘要

The present invention relates to a method for manufacturing a vent pipe for a vehicle reducing a noise and a weight and, more specifically, to a method for manufacturing a vent pipe for a vehicle reducing a noise and a weight, which can effectively reduce the noise generated in a process of inhaling noise or outside air generated while an engine is driving by melting a web mixed with polyester-based high melting grey yarn and low melting grey yarn to form the vehicle vent pipe having an air gap therein.