CN1048905A

CN1048905A - Dye stuff polymerzation bathless dry dyeing method for leather dyeing

Info

Publication number: CN1048905A
Application number: CN 90104028
Authority: CN
Inventors: 惠彬
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-05-30
Filing date: 1990-05-30
Publication date: 1991-01-30

Abstract

The invention relates to a kind of method of leather coloring, its major technique feature is to dye the crust leather control water of effect look between the moisture 40～70% with waiting, pack into the drum in, an amount of dyestuff condensate fragment is added in the drum, turn to dyestuff and all attach on leather, promptly dyestuff condensate fragment all dissolves disappearance, just can dye the effect look, advantage of the present invention is to dye contrast effect or multicolor effect on same Zhang Ge, can be used for the various leather colorings that need dyeing.

Description

Dye stuff polymerzation bathless dry dyeing method for leather dyeing

The invention relates to a kind of method of leather coloring.

Leather coloring is an important procedure in the tanning production, and general tanned leather all needs dyeing, makes leather present various chromatic colours, improves outward appearance, improves serviceability, with the requirement of satisfying people and the needs that adapt to various uses.Existing leather coloring all carries out with the aqueous solution of dyestuff, and dye loss is big, and it is tight that requirement condition height, crust leather give processing requirements, and it is many that dyeing takes liquid.Can only dye same tone behind the leather coloring, promptly exist the drawback that can only dye same tone on the same Zhang Ge; When manufacturing multicoloured leather goods, the leather of different colours can only be spliced and realize, and the form dullness, influenced the renovation of leather goods designs and varieties and the process that develops to fashion.Common dying operation method has drum to dye, brush and dye and spray-painting; Also have pad dyeing method (realizing with the leather multiple purpose aeroplane) in addition, the heavy curtain that carries out with curtain coater is coated with and dyes.

The objective of the invention is to change leather coloring can only dye single tone on same Zhang Ge drawback, on same Zhang Ge, embody contrast effect or multicolor effect after making leather coloring, thereby produce multicolour, naturally flexible, various colour leather attractive in appearance increases the designs and varieties of removing from office, and enlarges the scope of application, improve the class of leather, with the requirement of satisfying people and the needs that are fit for various uses.

Of the present invention theing contents are as follows:

Crust leather to be dyeed is dyed required primary colours by the normal dyeing method (or not to dye, with the crust leather primary colors is primary colours) adjust between pH value to 3.5～7, the control water to water content between 40～70%, drop in the drum, dye dosage is 0.05～0.5%(tare weight), dye dosage is decided according to the deep or light of required effect look, after required dyestuff weighed up, put into a kind of additive that increases dyestuff condensate volume (as titanium dioxide, flour, starch, soil powder etc., can not adding yet) its consumption is 2～10 times of dye dosage, after mixing, add water or a kind of adhesive (as neoprene etc.) and become face dough (dyestuff and solid powder are bonding to be as the criterion together making for water or adhesive consumption, even the dyestuff polymerization is got up).Again dough shape dyestuff condensate is cut into fragment, fragment size and shape are decided according to required form of dying the effect look, but also airing not of dough shape polymeric dye fragment airing, in the adding rotary drum, turning to dyestuff condensate fragment all attaches till on the skin, be till dyestuff condensate fragment all disappears, to stop 10 minutes, the dyestuff that attaches on skin is fully dissolved by moisture content in the skin, infiltration, changeed again 5 minutes, stopped 5 minutes, and added 40～60 ℃ of hot water between the liquor ratio 0.8～1, as the need fixation, add an amount of color-fixing agent by normal process, change 5 circles, stopped 5 minutes, change 5 circles again, stopped 5 minutes, washing, the flush away loose colour, dyeing finishes.

As required effect look is same tone, promptly get final product as stated above with a kind of dyestuff, as dying effect look is multiple color, dyes in different colors can be made as stated above dough shape dyestuff condensate fragment respectively, can together add in the drum, also graded adds in the drum, gets final product as stated above, and the color of general effect look darker than primary colours.

Advantage of the present invention is to dye multicolour on leather, and the colour of natural beauty leather increases the designs and varieties of leather, and the outward appearance of beautifying leather improves the class of leather, is beneficial to the renovation of leather goods designs and varieties and to the development of fashion.Obtain multicoloured leather by dyeing, the dab decorations can be taked in the surface, can give full play to the characteristics of natural leather, show the sanitation performance that utilizes natural grain attractive in appearance and strong and leather uniqueness.This method need not special installation, and operation is simple, is convenient to grasp.Dyestuff absorptivity height, the dye-free waste liquid reduces and pollutes, the work efficiency height, cost is low.

It is for reference to exemplify an embodiment below, of course not unique example.

Crust leather to be dyeed is dyed the blue look in lake earlier as primary colours, adjust between pH value to 4.5～5.0, control water is to removing from office base moisture about 50%, pack into the drum in, take by weighing direct blue 2B 0.2%(tare weight), take by weighing titanium dioxide 0.5%(tare weight) both mixings, with casein with both with become the dough shape together, be cut into fragment then, add in the rotary drum, turn to the dyestuff fragment and all disappear, stopped 5 minutes, changeed 5 minutes, then flowing water flush away loose colour.Dyeing finishes.

Claims

1, dye stuff polymerzation bathless dry dyeing method for leather dyeing is a kind of method about leather coloring.Its technical characterictic is, the crust leather control water waiting to dye the effect look between the water content 40～70%, in the drum of packing into, is added an amount of dyestuff condensate fragment in the drum, turns to dyestuff and all attaches on leather, and promptly dyestuff condensate fragment all dissolves disappearance.

2, according to claim 1, it is characterized in that: the preparation method of dyestuff condensate fragment is: take by weighing a certain amount of dyestuff, adding an amount of powder shape solid additive that plays increase dyestuff condensate volume mixes, add adhesive, its consumption is can make dyestuff and solid powder is bonding is as the criterion together, then with its with become the dough shape, be cut into the fragment of suitable size.

3, as described in the claim 2, it is characterized in that: powder shape solid additive can select for use titanium dioxide, flour, starch, native powder wherein a kind of.