Apparatus for producing staple-like yarn from continuous filament yarn
AssigneeBASF SE
InventorsRoger H. Fink, Robert N. Armstrong
Life of this patent
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Abstract
A process for converting a continuous multifilamentary yarn into a staple-like yarn involves continuously conveying continuous multifilamentary yarn onto a rotatable wheel having a peripheral yarn receiving groove and at least one radially disposed needle within the wheel and in registry with the groove. The needles are in various stages of retraction and extension depending upon the relative rotational position of the wheel. By laterally contacting the multifilamentary yarn in the groove, the barbs of the needles catch and break a fraction of the filemants from the side of the yarn so that the yarn is not forced upward out of its grooved path.
Claims12
In a process for converting a continuous multifilamentary yarn into a staple-like yarn by continuously conveying continuous multifilamentary yarn onto a rotatable wheel having a peripheral yarn receiving groove and one or more radially disposed needles, the one or more radially disposed needles within the wheel, in registry with the groove, and in various stages of retraction and extension depending upon the relative rotational position of the wheel, the improvement comprising:
- laterally contacting in the groove the one or more radially disposed needles with said multifilamentary yarn, the one or more radially disposed needles, having barbs and the barbs catching and breaking a fraction of the filaments and restraining said yarn against upward movement in its grooved path.
In an apparatus for converting a continuous multifilamentary yarn into a staple-like yarn by continuously conveying continuous multifilamentary yarn onto a rotatable wheel having a peripheral yarn receiving groove and at least one filament breaking means in various stages of retraction and extension within said wheel and in registry with said groove, the improvement comprising:
- said filament breaking means being in registry with said groove and means for laterally contacting said yarn in said groove without piercing the center of said yarn.
Dependencies are inferred from the claim text.