Apparatus and method for dyeing yarns
AssigneeArel Technology (1971) Ltd.
InventorLior Shwartzman
Life of this patent
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Abstract
Apparatus for dyeing yarn of the type wherein yarn is wound on cones mounted on a carrier in a vessel fitted with inlet and outlet conduits for the dye liquor, whereby the latter may be circulated in two modes, namely, in a first mode from the inside of the cones, and therethrough to the outside; and in a second mode vice-versa, and including means for operating in the first mode such that the amount of circulating dye liquor is little more than just sufficient to fill the inside of the cones and the perforate carrier, thus leaving the major part of the vessel space outside the volume occupied by the cones and the perforate carrier substantially free of dye liquor.
Claims7
Apparatus for dyeing yarn on cones comprising:
- first and second dyeing enclosures,
- at least one carrier disposed in each of said first and second dyeing enclosures, each carrier providing liquid communication with the interior of cones of yarn disposed thereon;
- means for simultaneously operating said first and second dyeing enclosures for dyeing operation including:
- first means operative during a first stage of dyeing operation for
- causing circulation in said first dyeing enclosure of a first amount of dye liquor, which is generally little more than just sufficient to fill the carrier and the insides of the cones, in a circulation sequence from the inside of the cones therethrough to the outside;
- and simultaneously
- causing circulation in said second dyeing enclosure of a second amount of dye liquor, which is generally sufficient to fill the second dyeing enclosure at least to the top of the cones therein in a circulation sequence from the outside of the cones therethrough to the inside;
- and
- second means operative during a second stage of dyeing operation for
- causing circulation in said second dyeing enclosure of a first amount of dye liquor, which is generally little more than just sufficient to fill the carrier and the insides of the cones, in a circulation sequence from the inside of the cones therethrough to the outside;
- and simultaneously
- causing circulation in said first dyeing enclosure of a second amount of dye liquor, which is generally sufficient to fill the first dyeing enclosure at least to the top of the cones therein in a circulation sequence from the outside of the cones therethrough to the inside.
A method for dyeing yarn on cones comprising the steps of:
- providing first and second dyeing enclosures;
- providing at least one carrier disposed in each of said first and second dyeing enclosures, for liquid communication with the interior of cones of yarn disposed thereon;
- simultaneously operating said first and second dyeing enclosures for dyeing operation including:
- during a first stage of dyeing operation:
- causing circulation in said first dyeing enclosure of a first amount of dye liquor, which is generally little more than just sufficient to fill the carrier and the insides of the cones, in a circulation sequence from the inside of the cones therethrough to the outside;
- and simultaneously
- causing circulation in said second dyeing enclosure of a second amount of dye liquor, which is generally sufficient to fill the second dyeing enclosure at least to the top of the cones therein in a circulation sequence from the outside of the cones therethrough to the inside;
- and
- during a second stage of dyeing operation:
- causing circulation in said second dyeing enclosure of a first amount of dye liquor, which is generally little more than just sufficient to fill the carrier and the insides of the cones, in a circulation sequence from the inside of the cones therethrough to the outside;
- and simultaneously
- causing circulation in said first dyeing enclosure of a second amount of dye liquor, which is generally sufficient to fill the first dyeing enclosure at least to the top of the cones therein in a circulation sequence from the outside of the cones therethrough to the inside.
Dependencies are inferred from the claim text.