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Barmag, Complete Spinning and Extrusion Plant, 1999, 216 Ends, 9400 kg/24h Capacity

Description

  1. Overview
    1. Complete spinning and extrusion plant for the production of PA 6 H4S polyamide multifilaments FDY (nylon 6).
    2. Possibility of production FOY and POY.
    3. Year of construction: 1999.
    4. 36 winders positions x 6 bobbins = 216 total ends.
    5. Yarn-count range: 35 - 75 dtex.
    6. Production capacity medium count yarn 55 dtex: 9,400 kg / 24 hours.
  2. Raw Material Storage and Feeding
    1. Two silos for chips storage, complete with electronic and manual valves and electronic deviators, for transportation of chips in pressurized nitrogen gas.
    2. Two mini-silos for emergency feeding of chips from big-bag.
    3. Pneumatic transportation of the chips inside nitrogen gas by two delta-screw air compressors complete with dryers and condensers.
    4. Small chips-feeding silos with electronic sensor for temperature and humidity control: two per extruder on each line (A, B, C, D).
  3. Extruders
    1. Line A: Barmag polymer extruder model 9E10, screw diameter 90 mm, production capacity optimized for 95-156 kg/h.
    2. Line B: Barmag polymer extruder model 9E10, screw diameter 90 mm, production capacity optimized for 95-156 kg/h.
    3. Line C: Barmag polymer extruder model 7E10, screw diameter 75 mm, production capacity optimized for 51-78 kg/h.
    4. Line D: Barmag polymer extruder model 7E10, screw diameter 75 mm, production capacity optimized for 51-78 kg/h.
    5. Effective length of screw: 24 x D.
    6. Extrusion height: 500 mm (9E10) and 420 mm (7E10).
    7. Granulate feeding housing: water cooled.
    8. Sealing for nitrogen pressure of max. 90 mm water column.
    9. Nitrated surface; LTM pin mixer nitrated surface.
    10. Total installed cylinder heating capacity: 31 kW (9E10) and 21.3 kW (7E10).
    11. Total installed fan capacity for cylinder cooling: 0.9 kW - 48.7 m³/min (9E10) and 0.27 kW - 21 m³/min (7E10).
    12. Chips temperature at extruder outlet: 20°C.
    13. Melt temperature at extruder outlet: ≥ 270°C.
    14. Melt viscosity: 100 Pa·s at 290°C.
    15. Melt pressure at extruder outlet: max. 180 bar.
    16. AEG asynchronous motor 49 kW (9E10) and 34 kW (7E10); protection class IP44; protection sensor thermic switch-off.
  4. Melt Filtration and Measurement
    1. Measuring head heating Dowtherm vapor; coarse filter in the filling heated: one per extruder.
    2. Dynisco melt pressure sensor type MDA 422, pressure range 0-350 bar, output signal 4-20 mA: two per measuring head.
    3. Melt temperature sensor type double PT100 in 3-wire system: one per measuring head.
  5. Polymer Distribution and Mixing
    1. Manifold polymer distributor, heating Dowtherm vapor.
    2. Total number outlets: line A direct 1 x spinning line with 12 outlets; line B direct 1 x spinning line with 12 outlets; line C direct 1 x spinning line with 6 outlets; line D direct 1 x spinning line with 6 outlets.
    3. Kenics polymer mixers, static type, total positions 42.
    4. Positions on each line: line A and B: two behind the first distributor and one every arm of the manifold (14 per line); line C and D: one in the main pipe and one every arm of the manifold (7 per line).
    5. Polymer valves freezing type, welded in the arms of manifold; freezing unit operation with quick connector couplings with ball valve for air inlet and sound absorber for air outlet; freezing medium: 6 bar compressed air; one unit per line.
  6. Spinning Heads and Spinnerets
    1. Spinning heads type SP4B/6; one spinning head equals two spinning positions.
    2. Bottom loading spinning heads with bent tube pump blocks to adapt self-sealing spin packs and planetary gear pumps as metering pumps with vertical pump drive.
    3. Protective gas blanketing provided.
    4. Connection to manifold flanged for polymer, welded for Dowtherm vapor heated.
    5. Operating temperature max. 319°C (592.15 K); max. 2.5 bar over pressure.
    6. Metal sheet covered insulation; stuffing material: rock wool with diamond spinnerets.
    7. Line A: 12 heads x 6 spinnerets; line B: 12 heads x 6 spinnerets; line C: 6 heads x 6 spinnerets; line D: 6 heads x 6 spinnerets.
    8. Dynisco melt pressure sensor before melt pump type MDT4624, pressure range 0-200 bar, output signal 4-20 mA, arranged before spinning pump at first spinning position counted from left hand side.