During the washing, wetting and drying processes, size changes in the form of shrinkage and elongation are observed in clothes.In this experiment, it is aimed to measure the amount of these changes. ( TS EN ISO 5077 )
Used materials
Scale scale scale
automatic washing machine
Press
Marker pen (not washable)
Detergent
Sample preparation
The clothes to be used in the experiment are prepared by laying them on a flat surface for measurement.
Experimental Procedure
After the creases are removed by placing the sample on a flat surface, the areas where the point measurement will be made are marked and their measurements are taken and recorded.
The area to be measured should be between the seams and parts such as buttons and zippers should be closed before the measurement is taken.
After all measurements are taken and markings are made, the sample is washed.
Three different detergents are used to prepare the detergent mixture we will use in this test.
9,09 gr of our ece detergent, which is one of these detergents, is weighed, this amount constitutes 11,8% of the 77 gram detergent solution.
2,36 grams of sodium perporate detergent is weighed, this amount constitutes 11,8% of the 20 gram detergent solution.
By adding tap water, the solution is heated until the temperature reaches 40 °C.
Then the temperature of the solution is expected to drop to 30 °C.
Then, 3 percent of tetra acetylethylene diamine detergent is added to the solution as bleach, weighing 0,354 grams.
The test sample is washed and dried in an automatic washing machine by adjusting the weight to 2 kg with load-balancing fabrics.
The dried sample is conditioned under atmospheric conditions.
It is laid without stretching too much to be measured later, and it is measured between the marked points and recorded.
Then, the size change amount in % is calculated using the following formula.
(Pre-process measurement – Post-process measurement) .100 / Pre-process measurement
The average size changes are then calculated, and the amounts of shrinkage (results with - sign) and elongation (results with + sign) in size changes are found.
Post-experiment tensile and elongation results are given as percentages.
