Method and apparatus for foerderung of particulate material from a take-up site into a delivery zone, in particular for the melt spinning, as well as a smelter generating unit and melt spinning machine in this case for

摘要

1386406 Melt-spinning apparatus PLATT INTERNATIONAL Ltd 13 March 1972 [16 March 1971 (2) 13 Jan 1972] 7009/71 7010/71 and 1692/72 Headings B5B and B5A A melt spinning apparatus comprises a melt producing unit 32 having a barrel 3 of non- circular cross-section which remains constant throughout the length of the barrel and a screw conveyer 13. In operation, polymer chips of, e.g., polyethylene terephthalate are supplied to barrel 3 from hopper duct 5, and owing to its non-circular cross-section, the barrel reacts against the chips between the screw and the barrel to prevent rotation of the material with the screw. The barrel may be of triangular, square, pentagonal, hexagonal, heptagonal, octagonal, oval, elliptical or semi-circular cross-section. The chips pass through melting grid 15 and the resultant melt is conveyed by metering pump 8 to spinneret block 12 where it is formed into filaments. The extruded filaments are quenched in known manner by a cross-current of quenching air supplied through foraminous block 20 of sintered metal. A spin finish is applied at roll 24 and the filaments after passage around feed roll assembly 28 are drawn between snubbing pin 30 and draw roll assembly 34 while passing over plate heater 32. Other forms of the apparatus (not shown) illustrate its adaptation to multistation operation by the use of common driveshafts replacing motors 6, 10 and 22, and its use in connection with known false-twisting, selftwisting and crimping apparatus.