Bleaching and dyeing; fluid treatment and chemical modification – Fluid treatment – Special forms and forming
Patent
1994-09-07
1996-04-02
Coe, Philip R.
Bleaching and dyeing; fluid treatment and chemical modification
Fluid treatment
Special forms and forming
8158, 68184, 68199, 68205R, D06B 524
Patent
active
055028560
DESCRIPTION:
BRIEF SUMMARY
This invention relates to dyeing textile articles and in particular, though not necessarily exclusively, to the dyeing of hosiery such as ladies' stockings and tights.
There are many ways of dyeing textile articles and many different types of dyeing machinery. The problem is always to find an economical method which can be carried out on machinery of low capital cost and maintenance requirements which is, however, effective to produce uniform dyeing both from article to article and as between different parts of the same article.
The invention provides a method which is particularly satisfactory, at least for the dyeing of ladies hosiery, in all of these regards and machinery for carrying out the method.
The invention comprises a method for dyeing textile articles comprising confining said articles in bulk but in orderly fashion in a dyebath up to a level therein, loading the dyebath with dye liquor to cover the articles and circulating said liquor through forceful sprays directed towards the articles from above said level.
Pretreatment of the articles, including scouring and the application of dyeing assistants such as levellers and retarders, may be carried out in the dyebath with liquid circulated through said sprays.
The articles may be packed in readily penetrable bags and a plurality of such bags packed in the dye bath. Hosiery articles such as stockings and tights may advantageously be packed flat in the bags rather than just being bundled in; the orderly packing avoids tight tangles resistive to dye liquor penetration, and facilitates unpacking.
The invention also comprises apparatus for dyeing textile articles comprising a dyebath loadable up to a level with articles to be dyed and circulating means for circulating dye liquor through the dyebath including forceful sprays located above said level and directed downwardly at articles confined in the dyebath.
The dyebath may comprise an open topped container and a removable insert, the insert comprising a carrier for carrying the articles to be dyed in bulk but in orderly fashion and having a column from which extends, above said level, an array of perforated tubes constituting said sprays and connected via said column to forced circulation means for the container.
The container may have a removable lid to prevent spashing out of liquor during the dyeing process, and the lid may be carried on the removable carrier.
The container may be rectangular in plan, the column extending along the container, desirably in a central position so that the array of sprays extends either side of the column.
The carrier may comprise a framework adapted to confine a charge of articles to be dyed so that the articles can be loaded into the framework with the carrier removed from the container and the loaded carrier then lowered into the open topped container. The provision of a second carrier allows one to be in use for dyeing while the second is being charged for instant loading into the container as soon as the dyeing operation on the first is completed.
Embodiments of apparatus and methods for dyeing textile articles will now be described with reference to the accompanying drawings, in which:
FIG. 1 is a cross-section of one embodiment of apparatus; and FIG. 2 is a plan view of the apparatus of FIG. 1.
The apparatus illustrated in FIGS. 1 and 2 comprises a dyebath 11 loadable up to a level 12 with articles 13 to be dyed, and circulating means for circulating dye liquor 14 through the dyebath 11 including forceful sprays 15 located above said level 12 and directed downwardly at articles 13 confined in the dyebath 11.
The dyebath 11 comprises an open topped container 16 and a removable insert 17, the insert comprising a carrier for carrying the articles 13 in bulk but in orderly fashion, and having a column 18 from which extends, above said level 12, an array of perforated tubes constituting said sprays 15 and connected via said column 18 to forced circulation means 19 for the container. The circulation means 19 comprise a powerful pump 19a delivering to an inlet 19b to
REFERENCES:
patent: 1567568 (1925-12-01), Brandwood et al.
patent: 2207682 (1940-07-01), Higginson
patent: 2522806 (1950-09-01), Stageberg
patent: 2985502 (1961-05-01), Kronsbein et al.
patent: 4231236 (1980-11-01), Tratta et al.
Coe Philip R.
CV Apparel Limited
Ley John R.
Phillips John B.
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