Apparatus and method for conditioning air-entangled yarn
OwnerJeffrey T. Rhyneinventor
Life of this patent
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Abstract
A yarn conditioning apparatus and methods for removing interlace nodes from a multifilament, crimped yarn, and including a first roll assembly for accepting the multifilament, interlaced yarn from a yarn supply at a predetermined yarn feed rate and outputting the yarn, and a second yarn roll assembly having a yarn feed rate greater than the yarn feed rate of the yarn input roll assembly for accepting the output yarn from the first roll assembly and stretching the yarn to a degree sufficient to remove interlace nodes from the yarn and outputting the conditioned yarn to downstream processes.
Claims15
A yarn conditioning apparatus, comprising:
- (a) a yarn supply for supplying a multifilament, crimped-yarn having interlace nodes;
- (b) a first yarn roll assembly for accepting the yarn from the yarn supply at a predetermined yarn feed rate, the first yarn roll assembly comprising an entry roll, a tension roll positioned in spaced-apart relation to the entry roll downstream therefrom, a feed roll positioned between the entry roll and the tension roll, and a nip belt extending around a belt path defined by the entry roll, the tension roll and the feed roll;
- (c) a second yarn roll assembly for accepting the yarn from the first yarn roll assembly and having a yarn feed rate greater than that of the first yarn roll assembly;
- (d) a first tension reducer for accepting the yarn from the second yarn roll assembly;
- (e) an entangler for accepting the yarn from the first tension reducer and entangling the yarn;
- (f) a second tension reducer for accepting the yarn from the entangler;
- and
- (g) a winder for accepting the yarn from the second tension reducer.
A yarn conditioning apparatus, comprising:
- (a) a creel for supplying a multifilarnent, crimped-yarn having interlace nodes;
- (b) a yarn-stretching conditioner for accepting the yarn from the creel and stretching the yarn to remove the interlace nodes, the yarn-stretching conditioner comprising first and second yarn roll assemblies each including an entry roll, a tension roll, a tracking roll, a feed roll and a nip belt;
- (c) a first tension reducer for accepting the yarn from the yarn-stretching conditioner and reducing tension in the yarn;
- (d) an entangler for accepting the yarn from the tension reducer and entangling the yarn;
- (e) a second tension reducer for accepting the yarn from the entangler and reducing tension in the yarn;
- and
- (f) a winder for winding the yarn.
A method of conditioning a yarn having spaced-apart interlace nodes, comprising the steps of:
- (a) stretching the yarn between a first yarn roll assembly and a second yarn roll assembly to reduce the interlace nodes, the first and second yarn roll assemblies each comprising an entry roll, a tracking roll, a feed roll and a nip belt;
- (b) relieving tension in the yarn;
- (c) entangling the yarn;
- (d) further relieving tension in the yarn;
- and
- (e) winding the yarn.
Dependencies are inferred from the claim text.