GB1285109A - Filament shaft - Google Patents

Abstract

1285109 Melt spinning apparatus BARMAG BARMER MASCHINENFABRIK AG 3 Dec 1970 [16 Dec 1969] 57458/70 Heading B5B Melt spinning apparatus comprises a filament shaft for more than two melt spun filaments or filament bundles separated from one another by partitions wherein the width of the shaft decreases in the direction of travel of the filaments and the partitions are adjustably and/or deformably fixed in the filament shaft in the direction of the shaft width. Preferably the partitions are fixed at their upper and/or lower edges so as to be adjustable in the direction of filament travel and/or the direction of shaft width. In preferred apparatus (Fig. 1) filament bundles 11 are extruded from spinnerets 1 and travel to applicator roll 10 and wind-up through a compartment of the filament shaft 3, formed by shaft walls 2, 3<SP>1</SP> and 3<SP>11</SP> and partitions divided into upper and lower sections 4 and 5, and guide means 9. Partitions 4 and 5 are fixed at their upper and lower edges 4<SP>1</SP>, 4<SP>11</SP>, 5<SP>1</SP> and 511 to adjusting means 6, 7 and 8 so that they may be adjusted, as indicated by arrows, in the direction of filament travel and/or shaft width. The lower portions 5, which are formed of a deformable, resilient one-piece panel (e.g. of aluminium) preferably with a stiffness of flexure which is greater near the upper and lower edges 5<SP>1</SP>, 5<SP>11</SP>, are straight in this embodiment but may be preformed to any desired curvature so as to more closely follow the sag in the filament bundle at the lower end of the spinning shaft (Fig. 2, not shown). Where the shaft is used with an even number of spinnerets the centre partition 12 may be a rigid one-piece plate. Fig. 3 (not shown) is a plan view in the direction X of Fig. 1 and illustrates the attachment of panels 4, 5 to adjustable means 6, 7 and 8.