| 摘要 |
1,139,397. Melt-spinning. GLANZSTOFF A.G. 7 April, 1967 [9 April, 1966], No. 16073/67. Heading B5B. Molten polymer is mixed prior to melt spinning by passing the polymer through one or more mixing elements 8, contained in parallel bores 7 situated immediately above the spinneret plate 4 which supports the filter assembly 10, the component stream of polymer in each of the mixing elements being repeatedly divided several times into two to eight filamentary flows which are recombined after each division. Each mixing element may have from 2 to 10 flow dividing devices 12 and the mixing elements communicate at their upper end with a distributing chamber 3 situated beneath the filter assembly and with a storage chamber 9 at their lower end situated just before the spinneret, the storage chamber being of very small volume so that the mixing occurs immediately prior to the spinning in such a manner that the component streams do not merge before spinning. When spinning monofilar and multifilar textile threads or filaments with a low count one mixing device may be used which is advantageously fitted into the supporting plate transversely to the direction of flow of the melt. The same arrangement is possible if 2 or 3 mixing elements are used. |
