Yaa Bleach Launder Of Woven Denims: Analysis Of Earlier In Addition To Afterwards Launder Properties (Part-5)

Bleach Wash of Woven Denims: Analysis of earlier as well as afterward Wash Properties (Part-5)

S.M. Bappy Rana
Dept. of Textile Engineering
People's Republic of Bangladesh University of Business & Technology
Cell: +8801781630519

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Hydro-extracting as well as drying:
After softening v minutes hydro-extracting is done .then nosotros dried the samples inwards gas dryer at 70°c for xx mins. Then mutual frigidness drying is for v mins to dorsum the apparels inwards normal position.

3.7 Working process:

Apparel ( Denim leg panel) .8 kg
↓
Desizing
↓
Hot launder
↓
Cold launder
↓
Bleach washing
↓
Cold launder
↓
Softening
↓
Hydro extracting
↓
Dryer
↓
Bleach washed Apparel

3.8 Testing & its procedure:

3.9 Following tests are done:

1. Tensile Strength test.
2. GSM measurement.
3. Shrinkage Test.
4. Count measurement.
5. EPI as well as PPI measurement.
6. Shade variation comparison.

3.10 Testing Procedure:

3.11 Tensile Strength test:
Tensile forcefulness examination is done past times select handgrip of examination principle. The sample size is 6" ˟ 4".

3.11.1 Apparatus:

• Heavy fabric.
• Fabric forcefulness tester.
• Scissors.

3.11.2 Machine specification:

• The horizontal tensile Strength Tester
• Good build & Co. Ltd.
• Capacity: 2000lb

3.11.3 Sample:

• Size – 6inch × iv inch.
• No. of sample – 8 ;Warp Way- 4,Weft way- iv

3.11.4 Working procedure:

1. At start half dozen inch × iv inch cloth was cutting out from a leg panel of fabric. The excess amount of cloth was cutting because the ii jaws volition need at to the lowest degree 2inch each to traveling steal the fabric. Thus iv samples were cutting downward for testing warp agency forcefulness as well as iv samples for weft agency strength.
2. Now, the start sample is fixed amongst the upper jaw J1 as well as the lower jaw J2.
3. The m/c is started as well as observed the dial until the sample is torn out.
4. When the sample is torn out the m/c is stopped as well as the reading is taken.
5. By this agency the others’ reading are taken.

3.11.5 Tensile forcefulness examination is done past times horizontal tensile forcefulness testing machine of People's Republic of Bangladesh University of Textiles (BUTEX).

Figure: Horizontal tensile forcefulness testing machine

3.12 GSM measurement:

3.12.1 Apparatus:

• GSM cutter
• Electric balance.

3.12.2 Machine Specification:
Specification of a GSM Round cutter :

• Area of Specimen: 100 cm²
• Diameter. Of Specimen: 113 mm.
• Type of Cut : Standard
• Blades : Heavy duty Reversible Blades
• Fine Brass security Lock
• Hand Wheel (Handle) : Special Bakelite Handle
• For repetitive examination without neglect the cutting pad should go novel rubber-foam pad.

3.12.3 Working Procedure of Measuring GSM of a Fabric:

1. For Measuring GSM, cloth sample is cutting past times GSM cutter
2. Now weight is taken past times electrical balance.
3. By this agency nosotros larn the weight inwards gram per 1 foursquare meter fabric.
4. Here GSM of the fabrics past times the GSM cutter is obtained past times the multiplying the sample weight amongst 100.

3.12.4 GSM standard examination is done past times GSM cutter from People's Republic of Bangladesh University of delineate of piece of job organization as well as technology (BUBT).

Figure: GSM Cutter

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