Apparatus and method for conditioning air-entangled yarn
OwnerJeffrey T. Rhyneinventor
Life of this patent
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Abstract
A yarn conditioning apparatus 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 for removing interlace nodes from a multifilament, crimped yarn, comprising:
- (a) a first yarn roll assembly for accepting the multifilament, interlaced yarn from a yarn supply at a predetermined yarn feed rate and outputting the yarn, the first yarn roll assembly comprising:
- an entry roll for accepting yarn from a yarn supply;
- 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 for being driven by a motor at the predetermined feed rate;
- and
- a nip belt extending around a belt path defined by complementary peripheral surfaces of the entry roll, tension roll and feed roll, wherein the yarn is fed by the entry roll into a nip at an infeed point of contact between the nip belt and the feed roll, positively fed between the nip belt and the feed roll and delivered at an outfeed point of contact between the nip belt and the feed roll downstream of the feed roll;
- and
- (b) a second yarn roll assembly having a yarn feed rate greater than the yarn feed rate of the first yarn roll assembly for accepting the output yarn from the first yarn 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.
A method of conditioning a yarn of the type comprising a multifilament twisted yarn having spaced-apart interlace nodes therein, comprising the steps of:
- (a) positively feeding the multifilament, interlaced yarn from a yarn supply at a predetermined yarn feed rate to a first yarn roll assembly;
- (b) outputting the yarn from the first yarn roll assembly to a second yarn roll assembly having a yarn feed rate greater than the yarn feed rate of the first yarn roll assembly;
- (c) stretching the yarn between the first yarn roll assembly and the second yarn roll assembly to a degree sufficient to remove interlace nodes from the yarn, and successively feeding the yarn between a feed roll and nip belt of the first yarn roll assembly and between a feed roll and nip belt of the second yarn roll assembly;
- (d) outputting the yarn;
- and
- (e) performing one or more processes on the yarn.
Dependencies are inferred from the claim text.