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 (10)

1. Equipment for the production of long filaments (1) from thermoplastic material, consisting of a melt blowing head (2) with a plastic guide rod (3) with at least one row of nozzle openings (4) for the release of molten plastic, and moreover, a primary air feeder which is positioned on both sides of the plastic guide rod (3) and by the long filament path (1) which can be shown on the primary air feeder on both sides in the area of the nozzle openings (4), and where at least one secondary air feeder which is positioned by the long filament path (1) which can be shown on the secondary air feeder at a temperature above 50 °C lower than the melt blowing head (2). 2. The device according to claim 1 in which the pre-blown air can be supplied on both sides through the gap (5) between the plastic guide rod (3) and the nozzle rim (6), and in which the width W of the gap and the distance X between the plastic guide rod end and the horizontal extension (which is assumed) at the nozzle rim end are adjustable. 3. An apparatus under either claim 1 or 2 in which the second-stage air is blown at an angle (alpha) of 50 degrees to 90 degrees, particularly 65 degrees to 90 degrees, particularly the optimal 75 degrees to 90 degrees relative to the assumed linear value (7) running through the nozzle opening (4). 4. The device under claim 3 in which the second air is blown perpendicular to or perpendicular to the principal axis, relative to an assumed value, along a straight line (7) that runs through the nozzle opening. 5. Any device under claims 1 through 4 where the second blown air can be blown at a temperature exceeding 60°C. 6. Any device under claims 1 through 5 where the relative humidity of the secondary air blown is less than 70%, particularly less than 50%, and particularly optimally less than 20%. 7. Any device under claims 1 through 6 where the supply device for the second blown air is further rearranged using long fibers (1) or a long fiber curtain that can be displayed on the second blown air from both sides. 8. Any device under claims 1 through 7 in which the secondary air blowing is temporarily fixed from at least one side. 9. Any device under claims 1 through 8 in which the secondary air blowing is arranged rhythmically from at least one side. 10. Any device under claims 1 through 9 in which a long fiber aggregation device (8) is placed on which long fibers can be aggregated from the spinning adhesion, not yet woven.