2. Introduction
The aim of this assignment is to select a garment and conduct a full basket of
tests on the fabric and complete a laboratory report with the results of the tests.
For each test we will give an explanation for the results and explain how the
results were achieved and explain what the supplier has done to achieve the
results.
We have chosen an outerwear jacket with and outer and inner layer fabric made
from Polyester. The outer layer is knitted and the inner layer is woven. Each
layer will need different tests.
Outer layer will be tested on Dimensional stability, spirality, colourfastness to
wash, colourfastness to rub, trim durability and colourfastness to roll.
Inner layer will be tested on Dimensional stability, seam slippage, colourfastness
to wash and colour fastness to rub.
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4. Tests, results and how it was
achieved
Outer
Fabric:
Knitted
100%
Polyester
interlock
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5. Dimensional stability – Shrinkage Passed
2023 Shrinkage 6
o Passed – Result: 0.8% (tol. 0.5%)
o Polyester is a strong and durable fiber – resistant to
shrinkage or stretch
o Most likely have used a ring spun yarn as the
characteristics is less shrinkage and strength, also
resistance to pilling
o Interlock knit construction adding to dimensional stability
8. Colourfastness - Passed
2023 Colourfastness 9
o Passed – Result to washing at 40’C : 4/5 (tol. 3-4)
o Passed – Result to rubbing : 4/5 (tol. 3-4)
o Passed – Result to roll damp : no cross staining
o Colour bleeding is dye loss in water that may colour other
items due to poor fibre dye bond and poor wash fastness
o Colour migration is colour transfer to other portions of the
garment due to poor fibre dye bond the dye migrates.
12. Dimensional stability – Seam slippage
Passed
2023 Seam slippage 13
o Passed – Result: 0.8% (tol. 0.5%)
o Passed – Warp seam 2 and Weft seam 1 (tol.
o Seam slippage can be prevented through applying coating
to outer layer, proper seam construction, stitch tension, firm
woven structure, enough stitches per inch, stitch balance
and wide enough seam allowance.
o Light coating at back of fabric has been applied
o Polyesters has been Heat-set - heat setting temperature
was it exceeded which makes it dimensionally stable .
13. Colourfastness - Passed
2023 Colourfastness 15
o Passed – Result to washing at 40’C : 4/5 (tol. 3-4)
o Passed – Result to rubbing : 4/5 (tol. 3-4)
o Determined by good dye class, length of dyeing and
controlling during process and good finishing treatments.
o Reactive dye was used as this has improved fastness
properties – this is water soluble and has excellent colour
shade range – can be washed safely even with white
garments.
o Reductive clear was used to remove any excess dye
14. Conclusion
Textile testing and quality control is a costly process, it is
necessary to test textile product for their quality. As far as
quality is the concern, we have to test the material first and
so that testing process starts from the raw material.
Initially, standards of certain quality are fixed for the
particular end product and then accordingly, the product is
manufactured. During manufacturing product testing is done
and obtained values are compared with standards and
quality control is done.
By testing and controlling the quality of the textile product we
can reduce the cost of production, as we are reducing
variation in manufactured product, reducing the waste and
rework, improving efficiency and increase productivity.
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