TH76586A - Equipment for the production of long fibers from thermoplastic materials - Google Patents

Abstract

DC60 (09/11/52) A device for producing long fibers from thermoplastic materials using a melt blown head with A synthetic fiber guide rod with at least one row of fiber channels for allowing the liquid synthetic material to pass through. Moreover, the melt blown head has a pre-air feed device on both sides of the melting head. Synthetic fiber conductors where the long fibers in the pores of the pass fibers are exposed to air. Gross can be both sides That is, one or more feeders are provided for secondary airflow where the fibers Can be exposed to the second stage blowing air along the side under the melting head. A device for producing long fibers from thermoplastics using a melt blown head with A synthetic fiber guide rod with at least one row of fiber channels for allowing the liquid synthetic material to pass through. Additionally, the melt blown head has a pre-air feed device on both sides of the melting head. The core is a synthetic fiber material where the long fibers in the pores of the pass fibers can be exposed to air. Gross can be both sides That is, one or more feeders are provided for secondary airflow where the fibers Can be exposed to the second stage blowing air along the side under the melting head.

Claims (9)

1. An apparatus for producing filaments (1) from thermoplastic material, comprising a melt blow head (2) having a plastic core (3) having at least one row of nozzle ports (4) for passing the plastic molten material, and further having a supply device for primary blown air arranged on both sides of the plastic core (3) and by means of filaments (1) that can be displayed on the primary blown air on both sides in the region of the nozzle port opening (4), and wherein at least one supply device for secondary blown air arranged by means of filaments (1) that can be displayed on the secondary blown air at a temperature higher than 50 °C lower than the melt blow head (2). 2. The device of claim 1, wherein the initially blown air, which can be supplied on both sides, passes through a gap (5) between the plastic guide core (3) and the nozzle rim (6), and wherein the width W of the gap is the distance and the distance X is between the tip of the plastic guide core and the horizontal extension (which is assumed) at the tip of the nozzle rim that can be adjusted. 3. The device of any one of claim 1 or 2, wherein the second blown air is at an angle (alpha) of 50 degrees to 90 degrees, preferably 65 degrees to 90 degrees, preferably 75 degrees to 90 degrees, with respect to an assumed value along a straight line (7) passing through the nozzle port (4). 4. The apparatus of claim 3, wherein the second stage of the blown air is perpendicular or at right angles to the principal axis, with respect to an assumed value, along a straight line (7) passing through the nozzle port. 5. The apparatus of any one of claims 1 to 4, wherein the second blown air can be blown at a temperature above 60°C. 6. The apparatus of any one of claims 1 to 5, wherein the relative humidity of the second blown air is less than 70%, preferably less than 50%, and preferably less than 20%. 7. The apparatus of any one of claims 1 to 6, wherein the supply device for the second blown air is further rearranged using a long fiber (1) or a long fiber curtain that can be displayed on the second blown air from both sides. 8. The device of any one of claims 1 to 7, wherein the second blown air blowing stage is temporarily fixed from at least one side. 9. The apparatus of any one of claims 1 to 8, wherein the second blown air is arranged rhythmically from at least one side; the apparatus of any one of claims 1 to 9, wherein the long fiber gathering device (8) is arranged thereon, on which the long fibers can be gathered from the unwoven bonded spinning.