CN101851870A

CN101851870A - Stripping finishing method of woolen dyed fabric

Info

Publication number: CN101851870A
Application number: CN200910048637A
Authority: CN
Inventors: 蒋永根
Original assignee: ZHEJIANG HUAFU MELANGE YARN CO Ltd
Current assignee: ZHEJIANG HUAFU MELANGE YARN CO Ltd
Priority date: 2009-03-31
Filing date: 2009-03-31
Publication date: 2010-10-06
Anticipated expiration: 2029-03-31
Also published as: CN101851870B

Abstract

The invention discloses a stripping finishing method of woolen dyed fabric, which comprises the following steps of: wetting dyed woolen fabric, adding reducing agent and ampholytic surface active agent, and treating at high temperature under the acidic condition; and then, cooling and washing by water, wherein the reducing agent is Decrolin, and the ampholytic surface active agent is ALBEGAL SET. The method can be used for stripping return repair after dye, so that the acidic complex dye and acidic medium dye of woolen fiber can be stripped by about 70%, wool reactive dye can be stripped by more than 50%, and color repair can be carried out again.

Description

The stripping finishing method of woolen dyed fabric

Technical field

The present invention relates to field of textiles, be specifically related to the stripping finishing method of woolen dyed fabric.

Background technology

Improvement along with people's life, the raising of the level of consumption, people are also more and more exquisite to dress, fashion and comfortable, healthy and environmental protection becomes the synonym in epoch, wool is as natural protein fibre, with the elegant environmental-friendly and comfortable of noble quality, the market demand is vigorous day by day, and present woolen dyed employing is neutral, reactive dye for wool, acidic complex dye, acid mordant dye is in the majority, wool fabric is with neutral, when acidity and acid mordant dye dyeing, sometimes it is dark partially to produce look flower or color inevitably, and in the face of the defective product of producing, factory has only two roads to walk: first, the resisdye dark color mostly is black, and this has caused difficulty for production marketing; The second, divest dyeing again behind original dyestuff.If serious look flower also must be stripped even cover dyes dark color in advance.

Because the good and environmental protection of reactive dye for wool dyefastness, more and more be subjected to the welcome of dye-works, but fastness is good, but the shortcoming of moderate reactive dye for wool maximum is the very difficulty of stripping, amplitude dare not be too big when look flower and toning when producing in dye-works, in case can only do defective product or cover black partially deeply, can cause product to overstock.

Existing stripping method has only 10%～20% to the rate of stripping of acidic complex dye, acid mordant dye dying product.Reactive dye for wool is difficult to strip basically, promptly use the such technology of stripping of dyestuff that adds in strong ligand replacement dyestuff-Cr (III)-wool complex, can only improve rate to 40%～50% of stripping to acidic complex dye, acid mordant dye, and reactive dye for wool still is difficult to peel off.

Therefore develop the technology and improve the rate of stripping that acidic complex dye, acidic intermedium dye and just seem very necessary of stripping of reactive dye for wool.

Summary of the invention

The objective of the invention is to overcome defective of the prior art, a kind of stripping finishing method of woolen dyed fabric is provided.

The stripping finishing method of woolen dyed fabric of the present invention comprises the following steps:

With the wool fabric of dyeing wetting after, add reductant and amphoteric surfactant, high temperature is handled under acid condition, cooling washing then, wherein reductant is Decrolin, amphoteric surfactant is ALBEGAL SET.

Decrolin, solid woods of middle literary virtue or Deco woods, chemical name: bisulphite zinc formaldehyde, soluble in water for the white granular crystal, its aqueous solution is faintly acid.Decrolin not only has the function of rongalite, can use under acid medium in addition, has strong reducing property under acid condition.In the textile printing and dyeing field, Decrolin is generally as the white discharging agent in the stamp.

ALBEGAL SET is produced by vapour Bagong department, is a kind of dyeing used additives, and chemical composition is partially modified nitrogenous fat, the goods of ethoxy alcohol, it is a kind of amphion, the pH value is acid, and energy and anion, CATION and nonionic use together, have good level-dyeing property.In the textile printing and dyeing field, this product prevents that as a kind of retarding agents dyeing kinetics is too fast in the dyeing course, also is a kind of accelerant simultaneously, is a kind of amphoteric surfactant.

In the technology of the present invention, the weight that reductant adds is that the percentage of wool fabric weight is 0.5%～10%, preferred 1-4%, and the percentage by weight that amphoteric surfactant adds is 0.5%～5% of a wool fabric weight, preferred 2-4%.

In the above-mentioned technology, the process conditions that high temperature is handled under the acid condition are: regulating the pH value is 4～7, and preferred 4.5-6 is warming up to 80～100 degree, is incubated 10～40 minutes.Preferable, it is formic acid that the pH value is regulated acid.

Described wool fabric comprises loose wool fiber such as wool tops, also comprises the yarn of wool, cashmere or woollen and cashmere, also can be the grey cloth of wool, cashmere or woollen and cashmere.

Described woolen dyed fabric is the wool fabric with reactive dye for wool, acidic complex dye or acid mordant dye dyeing.

Studies show that, the present invention is with the technology of stripping of reductant Decrolin and the reasonable coupling of amphoteric surfactant ALBEGAL SET, can obtain the very outstanding effect of stripping, compare with the routine technology of stripping, dyestuff clearance after stripping on the fabric improves more than 20%, strip after using the inventive method to dye and return something for repairs, dyestuff acidic complex dye on the wool fibre, acidic intermedium dye can be peelled off about 70%, reactive dye for wool can peel off 50%, has solved the very difficult technology barrier of stripping fast of reactive dye for wool.And the back wool of the stripping high and dyeing uniformity height of dye uptake that dyes again, the dyeing of can returning something for repairs.Traditional wool technology of stripping: add the solid agent of removing of woolen dyed fabric weight about 2% (remove woolen dyed after color-fixing agent), 60～80 degree 20 minutes, adding soda ash and sodium hydrosulfite again strips and was generally temperature 85～98 degree 40～60 minutes, add hydrogen peroxide again and go sodium hydrosulfite and bleaching, be generally 85 degree 30 minutes, the whole process time of stripping is 3.5 hours, wool fabric is because be subjected under the effect of high temperature and reductant and oxidant for a long time simultaneously, the brute force of wool can descend greatly, descend after tested and surpass 20%, water power vapour energy consumption height, pollution height to environment, loose wool fiber is after stripping with traditional handicraft, fiber is twisted together easily, the easy felting of wool top, follow-up spinning is brought bigger difficulty, weaved rate is than of the present invention low about 5%, therefore no matter the present invention is from the dyeing difficulty, water power vapour consumes the Shi Jian many-sides such as return something for repairs dyeing spinning effect of Xiao Guo after stripping of stripping of stripping all bigger advantage. in addition, the technology of stripping of the present invention is also little to the damage of wool fibre, but the color gamut of the back resisdye of light color of stripping is wide, can reduce the matter defect and overstock, improve the production efficiency of factory, increase profit.

Description of drawings

Fig. 1: the woolen dyed fabric of the present invention process chart of stripping

1. install the laggard water-wet of fabric

2. add amphoteric surfactant ALBEGAL SET

3. add the solid woods of reductant moral

4. regulate PH

5. high temperature 90-98 degree insulation

The specific embodiment

Below enumerate instantiation and further specify the present invention, should be understood that example is not to be used to limit protection scope of the present invention.

Embodiment 1 (loose wool fiber)

Select 170 kilograms of bulk fibres (former red staining prescription consumption is about 4%) after woolen dyed for use, put into bath raio at normal temperatures and be 1: 20 solution, add levelling agent ALBEGAL SET 3%, move and add the solid woods 2% of reductant moral after 5 minutes, regulate pH value to 4.5～5.5 with formic acid, be warming up to 90 degree insulations 30 minutes, slowly be cooled to 60 degree after, wash, promptly can dye after washing 2 times.Carry out tested K/S value with DATACOLOR SF600 spectrophotometer after stripping, detecting the rate of stripping is 72%.

Embodiment 2 (wool yarn)

Select 100 kilograms of yarns (primitive green dyeing recipe consumption is about 3%) after woolen dyed for use, put into bath raio at normal temperatures and be 1: 20 solution, add levelling agent ALBEGAL SET 4%, move and add the solid woods 3% of reductant moral after 15 minutes, regulate pH value to 4.5～5.5 with formic acid and be warming up to 95 degree insulations 30 minutes, after slowly being cooled to 60 degree, wash, promptly can dye after washing 3 times.Carry out tested K/S value with DATACOLOR SF600 spectrophotometer, detecting the rate of stripping is 60%.

Embodiment 3 (wool greige goods fabric)

Select 200 kilograms of woolen dyed greige goods fabric (former black-dyeing prescription consumption is about 6%) for use, put into bath raio at normal temperatures and be 1: 10 solution, add levelling agent ALBEGAL SET 4%, move and add the solid woods 2% of reductant moral after 5 minutes, regulate pH value to 4.5～6 with formic acid, be warming up to 90 degree insulations 20 minutes, slowly be cooled to 60 degree after, wash, promptly can dye after washing 2 times.Carry out tested K/S value with DATACOLOR SF600 spectrophotometer, detecting the rate of stripping is 78%.

Embodiment 4 (loose wool fiber)

Select 170 kilograms of bulk fibres (former red staining prescription consumption is about 1%) after woolen dyed for use, put into bath raio at normal temperatures and be 1: 20 solution, add levelling agent ALBEGAL SET 0.5%, move and add the solid woods 0.5% of reductant moral after 5 minutes, regulate pH value to 4.5～5.5 with formic acid, be warming up to 100 degree insulations 40 minutes, slowly be cooled to 60 degree after, wash, promptly can dye after washing 2 times.Carry out tested K/S value with DATACOLOR SF600 spectrophotometer after stripping, detecting the rate of stripping is 40%.

Embodiment 5 (loose wool fiber)

Select 170 kilograms of bulk fibres (former red staining prescription consumption is about 6%) after woolen dyed for use, put into bath raio at normal temperatures and be 1: 20 solution, add levelling agent ALBEGAL SET 10%, move and add the solid woods 5% of reductant moral after 5 minutes, regulate pH value to 4.5～5.5 with formic acid, be warming up to 80 degree insulations 30 minutes, slowly be cooled to 60 degree after, wash, promptly can dye after washing 2 times.Carry out tested K/S value with DATACOLOR SF600 spectrophotometer after stripping, detecting the rate of stripping is 85%.

Embodiment 6

Select the effect test of stripping of different auxiliary agents for use:

Select 100 kilograms of woolen dyed greige goods fabric (former black-dyeing prescription consumption is about 6%) for use, put into bath raio at normal temperatures and be 1: 10 solution, add levelling agent ALBEGAL SET 4%, move and add reductant sodium hydrosulfite 2% after 5 minutes, regulate pH value to 4.5～6 with formic acid and be warming up to 90 degree insulations 20 minutes, after slowly being cooled to 60 degree, wash, go out the cylinder dewatered drying after washing 2 times.Carry out tested K/S value with DATACOLOR SF600 spectrophotometer, detecting the rate of stripping is 30%.Effect is relatively poor.

Embodiment 7 (wool yarn)

Select 100 kilograms of yarns (primitive green dyeing recipe consumption is about 3%) after woolen dyed for use, put into bath raio at normal temperatures and be 1: 20 solution, add levelling agent ALBEGAL SET 4%, regulate pH value to 4.5～5.5 with formic acid and be warming up to 95 degree insulations 30 minutes, after slowly being cooled to 60 degree, wash, promptly can dye after washing 3 times.Carry out tested K/S value with DATACOLOR SF600 spectrophotometer, detecting the rate of stripping is 10%.Not adding the reductant effect obviously reduces.

Claims

1. the stripping finishing method of a woolen dyed fabric comprises the following steps:

2. the stripping finishing method of woolen dyed fabric according to claim 1 is characterized in that, the weight that reductant adds is 0.5%～10% of wool fabric weight, and the weight that amphoteric surfactant adds is 0.5%～5% of wool fabric weight.

3. the stripping finishing method of woolen dyed fabric according to claim 1, it is characterized in that in the described technology, the process conditions that high temperature is handled under the acid condition are: regulating pH value is 4～7, is warming up to 80～100 and spends, and is incubated 10～40 minutes.

4. the stripping finishing method of woolen dyed fabric according to claim 1 is characterized in that the material of described wool fabric is wool or cashmere, and the form of fabric is bulk fibre, yarn or grey cloth.

5. the stripping finishing method of woolen dyed fabric according to claim 1 is characterized in that, described woolen dyed fabric is the wool fabric with reactive dye for wool, acidic complex dye or acid mordant dye dyeing.