Apparatus for producing a bundle of fibrous elements
AssigneeToray Industries, Inc.
InventorsTakao Negishi, Kazuo Tomiita
Life of this patent
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Abstract
Disclosed is an apparatus for producing a bundle of fibrous elements, at least some of which are uneven in the thickness in the axial direction thereof, namely some of which include thick portions having a larger sectional area and thin portion having a smaller sectional area. In these fibrous elements constituting the fibrous bundle, the thick portions have, in general, a higher dyeability than the thin portions, and in the fibrous bundle, these higher dyeability portions are formed substantially randomly at a distribution ratio of at least 300 portions per 10 cm of the length of the fibrous bundle. This fibrous bundle is characterized in that it apparently resembles a fibrous bundle composed of fibrous elements uniform in the thickness and dyeability.
Claims8
A fiber processing apparatus comprising a drawing device, said drawing device provided with a frictional resistance-imparting member having a pin-like shape and a drawing roller, the central axis of said frictional resistance-imparting member having a pin-like shape being substantially in parallel to the central axis of said drawing roller, and the following relationship is established between said frictional resistance-imparting member and said drawing roller:
- d.sub.3.sup.2 +d.sub.3 (d.sub.1 +d.sub.2).ltoreq.50.sup.2
- where d.sub.1 stands for the diameter (mm) of said frictional resistance-imparting member having a pin-like shape, d.sub.2 stands for the diameter (mm) of the drawing roller, and d.sub.3 stands for a distance (mm) between said drawing roller and said frictional resistance-imparting member.
Dependencies are inferred from the claim text.