Method of dyeing woollen fabrics and items of clothing to produce a shot effect

Description

[0001] The invention refers to a colouring treatment for clothing pieces in wool and mixed whool which, as as principle, carries out a man­tle with changing sight perception that is determinated by a bril­liant emerging part on an opaque colouring ground. The said colour­ing effect carries out a new conception mantle characterized by continuous tonal changes in accordance with the different observa­tion angle, which is due to the depth colouring effect and by the hue of the emerging part from which the dye has been removed. The said depth colouring effect causes on the surface a down percep­tion with brillanted whiteness and changing intensity according to the observation angle of the part. The treatment enables a sight perception of a soft mantle with close out hair given by the emerg­ing part which gets varying brilliant tones on the colouring bot­tom. The tonal changes determined by the two parts, if shavingly observed, give rise to reflection effects of the light rays which cause brightness effects, increasing the incidence angle, in the perception of the deep colouring with the absorption of the light rays through the presence of the emerging part which acts as a filter. A particular sight and tactile preciousness of the mate­rial thus turns out which opens a new canal in the wool and mix­ed wool dressing sector.

[0002] Essential characteristic feature of the treatment, in a preliminar way, consists in carrying out the dyeing operation of the dressing piece without fixing it in order to then cause the pigmentation spray on the mantel bottom, whereas the surface part takes again the original dye and, in particular, a dyeing tending to the neu­tral one.

[0003] Substantially, for the treatment the material is laid in the dyeing tank with depurated water and glue, and with addition of pigment diluted with dispersing product. After having carried out a not-fix­ed hue of the pieces, the bath is cooled down, the dyed material is rinsed and put again into clean water with addition of elastomere which acts as a dyeing binder. Some catalizator is then added for fixing, then the piece is rinsed and centrifugated. At last, the ma­terial is dried and rinsed with addition af softener. The tratment causes the sedimentation of the very fine pigment dust on the bottom of the piece mantle bottom, carrying out a depth opaque colouring. The said colouring gives a particular surface brilliancy to the emerg­ing part of the mantle from which the above dust has been removed. During the treatment, a first operation phase performs dyeing with­out fixing the piece, which is at first dry-washed and then put in­to the dyeing tank with depurated water at the rate of 1 to 40 (40 litres of water and 1 Kg. of material), by adding a 10% of a gluey product, by acting with a rotating unit which turns during 30′ at a temperature of 50°C. The dye is then added which consists of a pigment diluted with a dispersing product, and the machine turns during other 60′ at 95°C. temperature. In the second phase the dye­ing bath is cooled down to 50°C., and the dyed material is rinsed. This one is again put into clean water with added elastomere (poly­vinical resin which acts as a dyeing binder) in a 10% rate. A 1% catalizator is now added to fix the above resin, and the unit goes on with its cold movemnt during 30′. The material is then rinsed, centrifugated, and the piece is wholly dried at 140°C. At last it is again rinsed in clean water with addition of a softener in order to obtain a finished piece with a softer mantle.

[0004] The treatment can be carried out on finished pieces, on working ones, as well as on material at the origin.

[0005] The execution particulars, the integrators and anyting else in this connection may be used in different ways according to the employ requirements.

Claims

1) Changing colouring treatment for woolen and mixed wool clothing pieces, characterized by the fact that a first operation phase car­ries out dyeing without fixing the piece, which is first dry-wash­ed and then put into a dyeing tank with depurated water at a rate of 1 to 40, with addition of the 10% of a glueing product while the unit is turning during 30′ at 50°C. The dyeing material is then add­ed which consists of a pigment diluted with a dispersing product, and the machine turns for other 60′ at 98 C. In the second phase, the dyeing bath is cooled down to 50°C. and the dyed material is rinsed. This one is again laid into clean water to which 10% ela­stomere is added. A 1% catalizator to fix the elastomere is added, and the machine works on cold during 30′. The material is then rins­ed, centrifugated and thoroughly dried at 140°C. At last it is rins­ed again in clean water with addition of a softener to get a soft finished piece.