Yaa Dyeing Cotton Fiber Knit Goods Without Bleaching (Part-1)

Scope of Dyeing Cotton Knit Goods without Bleaching Operation for Energy Saving together with Cost Reduction (Part-1)

Md. Palash Hossain
Department of Textile Engineering
Dhaka University of Engineering & Technology (DUET)
Email: palashsakal@yahoo.com

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ABSTRACT
Several samples of unmarried jersey cotton fiber (knitted) stuff of 180 GSM were colored through conventional together with selective procedure (pretreated without bleaching). Both types of samples were judged afterward dyeing amongst specific shade of unmarried together with tri-chromatic. Spectrophotometer (Data Color 650) CMC resultant passed for specific shade part for 3 principal colors ruby-red (0.5%), bluish (0.5%) together with yellowish (0.1%). In instance of tri-chromatic shade it was flora that 0.5% shade equally good possible without bleaching operation. In addition, characterization of the bleached together with unbleached dyed samples was done through investigation of unlike fastness properties. The unavoidable toll analysis revealed the appreciable outcomes of the work.

Key words:
Bleaching, cotton fiber knit fabric, lite shade, shade matching, color fastness, loose energy saving, toll effective

Abbreviations: PPC= Padma Poly Cotton, CMC= Color Measurement Committee, WTP= Water Treatment Plant, ETP= Effluent Treatment Plant

1. INTRODUCTION
Energy is i of the virtually of import ingredients inwards whatever industrial action [1]. However, its availability is non infinite. Global loose energy crisis, equally good equally high toll of fuels resulted inwards to a greater extent than activities to conserve loose energy to maximum extent. The textile manufacture retains a tape of the lowest efficiency inwards loose energy utilization together with is i of the major loose energy consuming industries. About 34% of loose energy is consumed inwards spinning, 23% inwards weaving, 38% inwards chemic moisture processing together with some other 5% for miscellaneous purposes. Power dominates consumption designing inwards spinning together with weaving, patch thermal loose energy is major for chemic moisture processing.

Textile industries are consuming large quantity of water, which is expensive to buy, treat, together with dispose. Major part of H2O is used for moisture processing of textile (60 to lxx %). Keeping this inwards hear in that place is needlelike withdraw of loose energy together with H2O conservation programmed to implement equally before equally possible.

Knit dyeing process is i of the virtually crucial together with dominating sector inwards Bangladesh, equally People's Republic of Bangladesh earns unopen to 40% of its unusual currency past times this sector [2] .So steps should live taken to brand this sector stronger past times reducing processing time, production toll together with past times saving environment. Process fourth dimension is a real of import ingredient for a dyer, because a dyer delivers his production within Pb fourth dimension that is given past times the buyers. To deliver product, dyer must trim back his dying time. In this competitive basis reduction of processing toll inwards equally good a major ingredient because higher production toll leads lower demand of the product. Hence it is real challenging work for the dyer. Moreover, it is of utmost necessity to proceed our environs complimentary from pollution of unlike chemicals used inwards dyeing factories. So to salve environs a dyer should utilization the to the lowest degree chemicals that are virtually essential for performing dyeing. In gild to perform the cotton fiber knit dyeing procedure efficient, reduction of procedure fourth dimension together with reduction of chemicals inwards the preparatory phase play a pregnant role. However without using peroxide inwards the preparatory process, it could live possible to obtain desired shade afterward dyeing. But genuinely upwards to the orbit of searching through meshing or books, no relevant query plant were flora inwards a justified way.

To run amongst the processing heads, focusing on scouring, bleaching together with then on tin live initiated here.

Natural fibers (cotton) are yellowish or off-white inwards color due to color bodies acquaint inwards the fiber together with incorporate oils, fats, waxes, minerals, leafy thing together with motes equally impurities that interfere amongst dyeing together with finishing. The procedure of devastation of yellowish or off-white color bodies is called Bleaching together with The procedure of removing of impurities together with brand skillful absorbency is called Scouring.

1.1 Objectives amongst rationales

1. The toll of a procedure includes the amount of procedure time, no. of processing phase together with amount of chemicals. Henceforth reduction of procedure time, chemicals trim back the cost.
2. Another focus lies amongst reduction of processing fourth dimension this equally good depends on how many processing phase are occupied. Since inwards this experiment bleaching is non conducted, it saves a lot of fourth dimension which is economical.
3. Since waste product H2O is hazardous for environment, inwards this procedure equally bleaching is non done. So extra chemicals practice non add together on equally effluent.
4. If procedure stages are increase to a greater extent than than require amount of loose energy volition equally good live more. In the bleaching procedure withdraw huge amount loose energy to operate the machine. Here bleaching functioning is totally ignore. So it saves sufficient amount of energy. That makes the procedure easier, prophylactic together with toll effective.

2. MATERIALS AND METHODS

2.1 Materials
2.1 Raw materials

Table 1: Information of used cotton fiber fiber

Parameter	Value
Origin	CIS (Uzbekistan)
Staple Length	11/8 "
Grade	SM
Mic	4.53
Mat	0.87
Rd	79.3
+b	11.0

Table 2: Fabric specification

Parameter	Value
Fabric type	Single jersey
Type of cotton	100% cotton fiber combed yarn
Yarn count	26S
GSM (Gram/Square Meter)	180

2.1.2 Dyes together with chemicals:

Table 3: Name of used dyes

Name of dyes	Trade name	Country
Reactive dye	Novacron Red FN-2BL	Switzerland
	Novacron Yellow FN-2R
	Novacron Blue FN-R

Table 4: Name of used chemicals

Name of chemicals	Name of  the company
Wetting agent	Dysin
Sequestering agent	Dysin
Antifoaming agent	Dysin
Caustic soda(NaOH)	Dysin
Hydrogen peroxide(H2O2)	Dysin
Peroxide killer	Dysin
Stabilizer	Dysin
Acetic acid	Dysin
Detergent	Dysin
Leveling agent	Dysin
Gluber salt	Dysin
Soda ash (Na2CO3)	Dysin
Anhydrous sodium carbonate	James H.Heal
ISO Standard soap	James H.Heal
L-Histidine hydrochioride monohydrate	James H.Heal
Sodium chloride (Nacl)	James H.Heal
Disodium hydrogen orthophosphate dihydrate	James H.Heal

2.1.3 Machineries

Table 5: Specification of used machineries

Name of Machine	Model	Brand	Origin
Infra Red lab dyeing machine	Supermat	Sandolab	TAIWAN
Washing together with dry out cleaning color fastness tester	415/8	James H. Heal	UK
Crock original color fastness to rubbing tester	670 manus driven crock master	James H. Heal	UK
Spectrophotometer	Model-600	Data color	USA
Light box	CAC-60	Verivide	UK
Combined laboratory oven dryer	HX30	James H. Heal	UK

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