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US 2003/0115729 A1Published application
Apparatus and method for producing frieze yarns
AssigneeSuperba
InventorPhilippe Massotte
Life of this patent
Estimating the term…
Abstract
A method for crimping yarn wherein the yarn is fed into a compaction channel of a stuffer box to obtain uniform crimping, and the crimped yarn is pre-set and guided to the outlet of the stuffer box by a pre-setting fluid. A pre-setting and guiding chamber of the stuffer box has a cross-section of generally polygonal shape that is larger than that of the compaction channel.
Claims33
A method for crimping yarn, comprising the steps of:
- feeding the yarn into a channel of a compaction chamber so as to impart a substantially uniform crimping to the yarn;
- and
- pre-setting the substantially uniformly crimped yarn by passing the crimped yarn from the compaction chamber into a pre-setting and guiding chamber defining a passage through which the crimped yarn passes, the passage having a cross section greater than that of the channel of the compaction chamber such that a free space is defined between at least one side of the crimped yarn and an adjacent wall of the passage, and wherein a pre-setting fluid is fed into the passage of the pre-setting and guiding chamber to pre-set the crimping of the yarn and to act on said at least one side of the crimped yarn so as to guide the yarn's progress through and out from the passage.
A device for crimping yam, comprising:
- a compaction chamber defining a channel therethrough and driving rollers operable to feed a yarn into the channel so as to impart a substantially uniform crimping to the yarn;
- and
- a pre-setting and guiding chamber defining a passage connected to an outlet of the channel of the compaction chamber for receiving the crimped yarn, the passage having a cross section greater than that of the channel such that a free space is defined between at least one side of the crimped yam and an adjacent wall of the passage, and wherein the device is operable to feed a pre-setting fluid into the passage of the pre-setting and guiding chamber to pre-set the crimping of the yam and to act on said at least one side of the crimped yarn so as to guide the yarn's progress through and out from the passage.
A device for crimping yarn, comprising:
- a compaction chamber defining a channel therethrough and driving rollers operable to feed a yam into the channel so as to impart a substantially uniform crimping to the yarn;
- and
- a pre-setting and guiding chamber defining a passage connected to an outlet of the channel of the compaction chamber for receiving the crimped yarn and a pre-setting fluid for pre-setting the crimping, the passage in cross-section including wall portions on generally opposite sides of the passage that diverge from each other so as to give the passage a cross-sectional shape larger than and different from that of the channel.
Dependencies are inferred from the claim text.