Patent ID: 6364647
Filing Date: 2002-04-02
Classification: D01D,D04H

Abstract:
An apparatus for melt-blowing thermoplastic fibers comprising an extruder having at one end a die head with one or more openings through which molten plastic is extruded; a plurality of nozzles, each of said nozzles having a shoulder of a fixed depth at a back end and a discharge orifice at a front end, said shoulder of each of said nozzles operatively coupled to said die head for receiving said extruded molten plastic; a strand plate having an interior hollow section and an array of nozzle passages arranged in a matrix of rows and columns at a back end through which said plurality of nozzles are inserted to form a corresponding matrix of rows and columns; an air chamber through which said nozzles extend defined by said interior hollow section of said strand plate; means for heating ambient air and delivering said heated air to said air chamber; and means for aligning said nozzles comprising a linear alignment strand disposed between adjacent rows of said nozzles.