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Woven and knit fabrics Shrinkage Tests:

Before doing any Shrinkage test, the sample should be conditioned in an atmosphere of 65% R.H. and 24 to 27C for a minimum of 4 hours.

WOVEN FABRIC SHRINKAGE   AATCC-135 Method (ISO 3759)

1. Sample size   50 cms X 50 cms

2. Marking area 35 cms X 35 cms

3. Samples weight should be 1.8kg +/- 0.1 kg

(If the sample weight is less than 1.8kg put the dummy cloth and maintain the weight of 1.8 kgs).

4.Liquour Ratio : 1:50

5.Suitable detergent  (0.5%) on the weight of sample i.e 1.8kgs

6.At 40⁰C for 60 minutes in Wash-cator.

7.Dry the sample at 60⁰C to 65⁰C using tumble dryer.

8.Press the sample in flat bed hot press  at 150⁰  +/- 15°C with 30 gms/cm² pressure.

9.Cool the sample and measure.

Shrinkage for Cotton Hosiery IS-3326

1.Liquor Ratio   1:50

2.Temperature : 30 to 35°C

3.Suitable Wetting agents (detergent) 0.5% on the weight of the hosiery sample.

4.Sample size 20  x 20 cms.

5.Marking area   14 x 15 cms (mark with marking scale).

6. Time 2 hours at 30 to 35°C

7.After that dry at room temperature.

8.Measure.

9.Shrinkage % = [100 x (a-b)]/a

where a = Distance between two ends before treatment

           b = Distance between two ends after treatment.