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Trends in Textile Engineering & Fashion Technology

To Reduce Chemical Consumption in Pretreatment Process of Terry Towel Processing

Kiran Patil, Tushar A Shinde* and Raichurkar PP

Mukesh Patel School of Technology, SVKM’S NMIMS, India

*Corresponding author: Tushar A Shinde, SVKMS, NMIMS, Centre for Textile Functions, Mukesh Patel School of Technology, Management Shirpur, District Dhule-425405, India

Submission: August 01, 2018Published: August 14, 2018

DOI: 10.31031/TTEFT.2018.04.000579

ISSN 2578-0271
Volume4 Issue1


This study is aim to standardize the process parameter is desizing, scouring and bleaching and come out with the best practice in chemical consumption in pretreatment of terry towel. The determination of the pretreatment performance because of desizing, scouring and bleaching chemical concentration.

The careful consideration of process parameter in pretreatment helps the wet processing industry to ensure the application of standard concentration of the chemical during processing. The concentration of alkali use in the pretreatment of cotton is represented by many researches.

In this process by varying the chemical concentration, time and temperature, we obtain good result. This particular research on the reduction of the total chemical consumptions, time and temperature. The results were found to promising and comparable to that conventional pretreatment fabric which is performing in terry towel industry.

The aim of this project work is to develop less consumption of chemical pretreatment method which can produce similar desizing efficiency, whiteness index, and absorbency of the fabric. In this study we found reduction of pollution load associated with excessive usage of chemical in standard conventional pretreatment process.

It was found that with the reduction of caustic, stabilizer and Hydrogen Peroxide concentration performance of pretreatment become better. Effect of the above process by reducing chemical consumptions in desizing scouring, bleaching (pretreatment) of terry towel fabric in soft-flow Thies machine which gives good results and better absorbency, bleaching efficiency and whiteness index of bleached fabric which have been studied in this work.

Keywords:Pretreatment; Chemical concentration; Desizing; Scouring; Bleaching; Absorbency; Whiteness-index


The textile dyeing sector uses large quantities of chemical companies operating challenges this project to identify the different types of chemical used and the overall quantities involved in each case; check the use of standard chemical doses in pretreatment process and check the RFD (Ready for Dyeing) material parameters i.e. absorbency, whiteness index and desizing efficiency [1]. The benefits of reducing chemical in dyeing process to reduce cost of chemical, time, water, save the energy, ultimately save the cost of pretreatment process [2].

Chemical concentration has demonstrated that substantial cost saving can be made with zero investment by improving operating practice and by changing process in chemical processing [3]. In textile processing the reducing of chemicals doses helps to ETP (Effluent Treatment Plant).

Material and Method


Material used for the experiment was 100% cotton terry towel was procured from textile Park [4], Ruby dyeing II Pvt. Ltd Shirpur, Maharashtra.

A. Machine: Soft flow thies dyeing machine.

Check point of RFD material: 1. Fabric pH should be a neutral. 2. Fabric should be free from residual peroxide & size paste [5].


Check the all parameter during RFD process of terry towel i.e.,

1. Desizing pH

2. Bleaching pH

3. Water pH

4. Hardness of water

5. Hardness of bleaching water

6. Concentration of chemical: After RFD process check parameter i.e

a) pH of terry towel

b) Desizing efficiency

c) Absorbency

d) Whiteness index of terry towel

Experimental Work

Data collection: Lab recipe for desized white before trial

Table 1:Study of pretreatment process before trial for desize white

figure 1:Pretreatment process before trial for desize white.

Data collection: Lab recipe for desized white after trial

Table 2:Study of pretreatment process after trial

figure 2:Pretreatment process after trial for desize white.

Data collection: Bulkrecipe for desized white before trial

1. Shade: White

Table 3:Study of pretreatment process before trial in bulk recipe

Data collection: Bulk recipe for desized white after trial

1. Shade: White

Table 4:Study of pretreatment process after trial in bulk recipe.

Data collection-2

Study of RFD process in lab (2.5gpl caustic):

Table 5:

A. RFD Process in lab (1.5gpl caustic):

Table 6:

B. Before result in lab

Table 7:

Study of RFD process before trial in bulk processs:

Table 8:

A. Bulk RFD process before trial data:

Table 9:

B. Study of RFD process after trial:

Table 10:

Part 1: Trail with 2.0 GPL caustic in RFD process

Table 11:

A. After trail results: 2 GPL Caustic (Bulk Trial):

Table 12:

figure 3:

Part 2: Trail with 2.5 GPL caustic in RFD process:

Table 13:

A. Before trail results:

Table 14:

B. After trail results:

Table 15:

Results and Discussion

Graphical representation

figure 4:

figure 5:Process for white before trail.

figure 6:Process for white after trail.

figure 7:Bulk RFD process before trial.

figure 8:Bulk RFD process after trail.


In this project we have try to reduce the chemical consumption in pretreatment of terry towel for this work we first study standard dosages of each chemical used in pretreatment and dyeing of terry towel [6]. After this for month we study the result of these pH and dosages in pretreatment of terry towel and check parameter like absorbency, whiteness, pH desizing efficiency [7-10]. The discusses this with our mentor and other shift officer then with their help we reduce some quantity of chemical from standard dosges from of caustic and take trial in lab and compair it’ result against result of standard dosages of caustic and then again under their guidance take trail in bulk production of terry towel by reducing the standard dosges of chemical used in pretreatment and with constant pH, time and temperature and compare result this dosages against standard dosage [11]. In other hand we also study the process of wnite shade in bulk in which bleaching process is carried out two time at 110 °C for 90min and 110 °C for 75min. We reduce one process of them.


In this study, from our experimental result we concluded that desizing efficiency, whiteness index, and absorbency of terry towel is good. The result which is observed and analyze is giving similar data as work which is performed in industry [12]. This study is perform with the use of 2.5, 2 and 1.5g/l NaOH in pretreatment process and compared with 2.5g/l standard concentration of NaOH which is a conventional process. From our experimental result we can implement the use of 2g/l and 1.5g/l caustic in pretreatment process of terry towel instead of standard dosage i.e., 2.5g/l. This is the following points which are obtained as a result after above studies during project work:

1. This process minimizes the process of two-time bleaching process for white shade by changing the time of bleaching process at 110 °C for 75min.

2. Reduction in the chemical consumption i.e NaOH, Hydrogen peroxide and Peroxide Stabilizer in desizing, scouring, and bleaching process of fabric is obtained [13,14].

3. Saving of time, water, temperature, and electricity due to less time-consuming process.

4. Reduces the ETP load by using less concentration of chemical, and due to less NaOH concentration the effluent water become less alkaline and as a result the less amount of acid is using to neutralize effluent water.

5. Reduce the cost of pretreatment process of terry towel due to less chemical usage.

Thus, by above points we can say that this research work is giving good approach of using optimized quantity of chemical and auxiliaries in pretreatment process of cotton fabric.


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© 2018 Tushar A Shinde . This is an open access article distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and build upon your work non-commercially.