Apparatus and method for forming multi-colored yarn
View Patent ↗A process for forming a spaced dyed yarn, where a yarn is conveyed to a dye application station where a coordinated stream of dye is projected in a normal stream path adjacent to a first side of the yarn. The dye is applied to the yarn when a gas nozzle projects a stream of gas such that it impinges the stream of dye and diverts the stream of dye across said yarn to an alternative deflected path adjacent to the opposite side of said yarn, causing the dye to sweep over the yarn and impact and color the yarn. Upon deactivation of said gas nozzle, the stream of dye passes back across said yarn to the first side of the yarn, impacting and coloring the yarn for a second time.
1. A process for applying dye to a yarn, the yarn having a first side and a second side opposite the first side, the process comprising:
conveying said yarn to at least a first dye application station;
delivering a coherent stream of dye from said dye station in a normal stream path adjacent to and in non-contacting relation with the first side of said yarn; and
intermittently activating and deactivating a gas nozzle projecting towards said coherent stream of dye such that upon activation of said gas nozzle, a stream of gas impinges said coherent stream of dye thereby diverting said coherent stream of dye across said yarn to an alternative deflected path adjacent to and in non-contacting relation with the second side of said yarn, whereby said dye impacts said yarn in a coherent stream and colors said yarn and such that upon deactivation of said gas nozzle, the coherent stream of dye passes back across said yarn whereby said dye impacts said yarn in a coherent stream and colors said yarn.
2. The process as recited in claim 1 , wherein the gas nozzle is repeatedly activated and deactivated over a prolonged period and wherein the period between activation and deactivation is sufficiently short such that a substantially uninterrupted dyed segment is produced along the yarn.
3. The process as recited in claim 1 , wherein a period of time elapses between activation and deactivation of the gas nozzle such that a pattern of separate dye segments is produced along the yarn.
4. The process as recited in claim 1 further comprising delivering the yarn to a second dye application station downstream of said first dye application station, whereat a second coherent stream of dye is delivered along a normal stream path adjacent to and in non-contacting relation with the first side of said yarn, said second dye application station including an intermittently activatable gas nozzle projecting towards said second coherent stream of dye such that upon activation of said gas nozzle, a stream of gas impinges said second coherent stream of dye thereby diverting said second coherent stream of dye across said yarn to an alternative deflected path adjacent to and in non-contacting relation with the second side of said yarn, whereby said dye from the second dye application station impacts said yarn in a coherent stream and colors said yarn and such that upon deactivation of said gas nozzle, the second coherent stream of dye passes back across said yarn whereby said dye from the second dye application station impacts said yarn in a coherent stream and colors said yarn.
5. The process as recited in claim 4 , wherein at least a portion of the dye from the second dye application station impacts and colors said yarn at locations along said yarn previously colored by dye from said first dye application station such that dye from said first dye application station and from said second dye application station is intermixed at said locations along said yarn whereby mixed coloration is achieved.