CN102191642A

CN102191642A - Reactive dye pad dyeing and steaming process

Info

Publication number: CN102191642A
Application number: CN 201010135345
Authority: CN
Inventors: 温国俊
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-03-01
Filing date: 2010-03-01
Publication date: 2011-09-21

Abstract

The invention provides a reactive dye pad dyeing process. The process is characterized in that the reactive dye and fixing alkali are separately melted; firstly the reactive dye is subjected to padding, then the fixing alkali is subjected to padding and spraying or is applied by a proportioning pump and then the cloth enters into a drying machine with controllable moisture content to be dried until the moisture content is below 30% and the cloth only contains unfrozen water and bound water; and the cloth enters into a booster box to be steamed and fixed under such moisture content and then enters into a water washing box to be washed with water, soap and water and dried after being fixed, thus completing the dyeing process. The process has the following beneficial effects: the process does not have special requirements for the dyes and chemicals; the process can be used for the existing pad dyeing materials; the bottoming and drying processes are omitted; the cloth temperature is higher during steaming; and the water content of the cloth is low, so vast steam can be saved, the fixation rate of the dye is improved, the use amount of the salt is greatly reduced or the salt is not used and the requirements for energy conservation and environmental protection are satisfied.

Description

A kind of REACTIVE DYES pad dyeing decatize technology

Affiliated technology territory

The present invention relates to the REACTIVE DYES knot dyeing technology, especially can realize the extensive adaptability of REACTIVE DYES, energy-conservation, less salt or salt-free environment-protective process.

Background technology

At present, dyeing is the industry of a high energy consumption, high pollution, and pad dyeing active material dyeing accounts for most production capacities, so the main developing direction that to change active pad dyeing high energy consumption situation be dyeing and finishing technique.

In order to address this problem, developed several wet short technologies of steaming both at home and abroad, its common feature is that the REACTIVE DYES performance is had specific (special) requirements, is not suitable for used all REACTIVE DYES.

2, equipment investment costs an arm and a leg, and can only be used for vital staining, can not be used for intellectual circle's dyeing, and limitation is very big, has influenced it and has promoted the use of on a large scale at home.

Summary of the invention

In order to overcome present reactive dyeing high energy consumption situation, the invention provides a kind of new reactive dyeing technology.This technology: 1, can be extensive use of pad dyeing REACTIVE DYES commonly used now, existing color matching theory can both use.2, equipment investment is few and can switch between REACTIVE DYES and this two big class colouring method of intellectual circle's dyestuff, and apparatus adaptability is wide.3, save steam.4, can accomplish less salt or salt-free environmental requirement.

The technical solution adopted for the present invention to solve the technical problems is: 1, install one group again additional and controlledly contain damp rate drying unit before reduction decatize case, this drying unit has following characteristics: a, thermal inertia little, opens or closes the uniform drying effect of all playing stably at any time.B, controllable continuous are moved the damp rate that contains of cloth.See application number: 201010004243.4 printing and dyeing continuous-type microwave dryers can reach this effect.

2, REACTIVE DYES and fixation alkaline agent divide the bathization material.Can adopt several modes of padding:

A, REACTIVE DYES and fixation alkaline agent put in the hopper in 4: 1 ratios with proportioning pump, and hopper is selected the little groove of volume for use as far as possible, dyebath stability height like this, and balancing speed is fast.B, pad REACTIVE DYES earlier and pad fixation alkaline agent again.C, earlier pad REACTIVE DYES then the spray mode apply fixation alkaline agent.

Pad the composition of REACTIVE DYES and fixation alkaline agent.

The REACTIVE DYES prescription: fixation alkaline agent is formed 1 fixation alkaline agent and is formed 2

REACTIVE DYES Xg/l soda ash 30g/l soda ash 30g/l

Bleeding agent 5g/l caustic soda 5g/l

Migration inhibitor 20g/l NaCl 250g/l NaCl 250g/l

Reserve salt 10g/l reserve salt 10g/l

Technical process:

Pad REACTIVE DYES → pad fixation alkaline agent → controlled and contain damp rate oven dry → decatize → wash → soap → wash → dry

The technical process explanation:

Pad REACTIVE DYES: all can use with REACTIVE DYES all pad dyeing that meet existing color matching theory, identical with usedization material method of operating, the employing evenness calender pads, pick-up is about 60%.

Pad fixation alkaline agent: this is and has one of technology difference now, and existing technology is to pad fixation alkaline agent after the requirement oven dry, and this technology is directly to pad fixation alkaline agent after padding REACTIVE DYES.Fixation alkaline agent be applied with above-described three kinds of methods.A kind of method now just is discussed is promptly padded fixation alkaline agent.

Pad little that hopper that fixation alkaline agent uses will try one's best, the groove of existing capacity 10L can be selected for use.Pick-up 75%.Like this dyestuff and alkaline agent in the ratio on the cloth greatly about about 4: 1, if more accurate with proportioning pump.

Controlledly contain the oven dry of damp rate: and do not require the cloth oven dry of rolling dyestuff and alkaline agent, but require to reach containing of certain technological requirement of damp rate here.In this technology, require to pad the cloth behind the fixation alkaline agent of dyestuff, the oven dry degree reaches and only contains the degree of not freezing water and irreducible water, and the moisture content in free moisture content and the capillary is dried, and contains damp rate and is lower than 30% and can reaches requirement, and at this moment the temperature of body is greatly about about 80 ℃.Dyestuff and fixation alkaline agent have obtained concentrating in this process, containing damp rate 75% is concentrated to below 30%, therefore the consumption of salt has only 1/5 of original consumption, and the consumption of dyestuff also can reduce accordingly, has played the effect of saving dying material, this drying course heat energy utilization rate height, conventional hot flue padding machine utilizes the Steam Heating air, makes cloth intensification water evaporates again, and water vapour and hot-air mix, a large amount of hot-airs runaway is thereupon arranged when draining water vapour, and heat-energy losses is bigger.In this technology, oven dry be free moisture content on the cloth, need that multipotency more could dry do not freeze water and the irreducible water reservation is used for dyeing medium here.

Decatize: when cloth dries that containing of technological requirement, damp rate 30% was following, about about 80 ℃ of body temperature, directly enter in the reduction decatize case commonly used, the decatize case is the packing mouth, and to contain damp rate low because of body, and reached about 80 ℃, small amount of steam just can be raised to 100-102 ℃, and at this moment the decatize moisture content is low, and the dyestuff hydrolysis is few, the degree of fixation height plays energy-conservation effect.And traditional fluid-tight technology cloth enters the decatize case and brings a large amount of room temperature liquids into, consumes a large amount of steam and is used for heating up.

After washing → soap → wash → dry: technology is identical with traditional handicraft, washes effectively less because of this technology salt consumption, improves the wet-milling of cloth and wipes COLOR FASTNESS, reduces the consumption of water.

The invention has the beneficial effects as follows: do not need the dying material of specific (special) requirements, conventional dye species can use.Save the bottoming drying course, also greatly reduce with quantity of steam during decatize, but energy savings, the consumption of minimizing salt, technological operation is simple, and equipment investment is few.

Description of drawings

The present invention is further described below in conjunction with drawings and Examples:

Figure one is this REACTIVE DYES pad dyeing decatize implementation of processes illustration, 1. cloth among the figure, and 2. evenness calender groove, 3. low capacity rolls the alkali groove, 4. controlledly contains damp rate dryer, 5. decatize case, 6. rinsing bowl 7. rolls fixation alkali padding machine.

The specific embodiment

In figure one, cloth (1) pads REACTIVE DYES at evenness calender groove (2), pick-up is about 60%, enters low capacity again and rolls alkali groove (3) and pad fixation alkaline agent, rolls fixation alkaline agent through padding machine (7), enter controlled containing in the damp rate dryer (4) again, oven dry is below 30% to containing damp rate, and this contains damp rate and can enter in the decatize case (5) again and carry out vapour steaming colour fixing according to technique initialization, steam temperature is 102 ℃, enters rinsing bowl again and washes, soaps, washes, dries and finish dyeing course.

Claims

1. REACTIVE DYES knot dyeing technology, technical process comprise pad dyestuff, pad alkaline agent, vapour steaming colour fixing and washing, soap, washing, drying course, it is characterized in that: before vapour steaming colour fixing, increase by one and controlledly contain damp rate drying course.

2. according to the described a kind of REACTIVE DYES knot dyeing technology of claim 1, it is characterized in that: fixation alkaline agent applies mode for padding, spray or applying with proportioning pump.

3. according to the described a kind of REACTIVE DYES knot dyeing technology of claim 1, it is characterized in that: pad to dry behind the dyestuff and directly pad fixation alkaline agent.