Yaa Garment Washing: An Effective Procedure For Beautification Of Garments (Part-8)

Garment Washing: An Effective Process for Beautification of Garments (Part-8)

Rahat Khan
Dept. of Apparel Manufacturing
Atish Dipankar University of Science as well as Technology
Cell: +8801717781833
Email: rahat.info@gmail.com

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5.1.4 Dimensional stability test:
This exam method is intended for determining the dimensional changes of woven fabric, when subjected to repeated automatic laundering physical care for unremarkably used at home.

Dimensional change:
In full general feel the changes inward length or width of a fabric, specimen subjected to specify status is known every bit dimensional change.

Shrinkage:
A dimensional modify resulting inward a decrease inward the length or width of a specimen subjected to specified status is known every bit shrinkage. Shrinkage % agency how much per centum volition shrink later wash.

Apparatus:

• Automatic washing machine
• Dryer
• Stainless steel container
• Commercial detergent
• Measuring scale
• Weight residual

Test specimen:
For woven fabric:
The specimen size is 22cmX22cm as well as grade amongst 20X20cm parallel to warp as well as weft administration respectively.

Fig-25: Sample (For Shrinkage)

Working procedure:

• The specimen of 22X22cm was taken.
• The detergent into stainless steel container was taken.
• Then the detergent was dissolved
• The specimen was putted into it as well as thence the stainless steel container was kept into the machine.
• Machine was started running.
• The temperature was raised upwards to 600c as well as kept it xxx min.
• The specimen was removed.
• Water was extracted past times squeezing thence took it into the dryer upwards to 60⁰ c .

Recipe:

• Detergent: 5gm/L
• M: L 1:50
• Time xxx 2nd
• Temparature: 60⁰ c

Calculation the introduce dimensional changes according to the formula every bit below:

% Dimensional changes = (A-B)/AX100

Where,

A=Original dimension
B=Dimension later laundering

Experimental data:

1. For denim stuff without washing (Basic):

	Before wash(cm)	After wash(cm)	% Change
Length wise	20	19.4	3%
Width wise	20	19.2	4%

2. For low-cal bleach:

	Before wash(cm)	After wash(cm)	% Change
Length wise	20	19.7	1.5%
Width wise	20	19	5%

3. For medium bleach:

	Before wash(cm)	After wash(cm)	% Change
Length wise	20	19.8	1%
Width wise	20	19.2	4%

4. For enzyme:

	Before wash(cm)	After wash(cm)	% Change
Length wise	20	19.7	1.5%
Width wise	20	19.2	4%

5. For rock enzyme:

	Before wash(cm)	After wash(cm)	% Change
Length wise	20	19.8	1%
Width wise	20	19.5	2.5%

6. Hand whicker:

	Before wash(cm)	After wash(cm)	% Change
Length wise	20	19.8	1%
Width wise	20	19.6	2%

7. Pattern whicker:

	Before wash(cm)	After wash(cm)	% Change
Length wise	20	19.6	2%
Width wise	20	19.2	4%

5.1.5 Weight loss:

Weight loss is a physical care for past times which how much weight reduced from the basic sample later washing tin flame live known. The weight of the sample loss varied inward dissimilar washing.

The basic sample of 10cmX10cm was taken, thence weighted as well as compared amongst other washing samples.

Fig-26: Sample (4X4 inch)

The final result tin flame live determined from (Actual sample weight-Washing sample weight)

Difference betwixt basic sample & washed sample:

No.	Sample type	Basic sample weight (gm)	Washed sample weight (gm)	Difference (gm)	Change %
1.	Denim stuff without wash(basic sample)	2.79	2.79	0	0
2.	Light bleach		2.57	0.22	7.88
3.	Medium bleach		2.55	0.24	8.6
4.	Stone enzyme		2.77	0.02	.71
5.	Enzyme		2.72	0.07	2.5
6.	Pattern whickering		2.55	0.24	8.6
7.	Hand whickering		2.64	0.13	4.65
8.	Potassium permanganate		2.73	0.04	1.43

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