In fact, it's all due to shrinkage. Today's short tour is about shrinkage.
What causes the fabric shrinkage?
The fabric will be damaged after washing, high heat ironing, chemical or machine washing, meanwhile the fiber will produce a tension, making the fabric deformed, then the phenomenon of contraction or expansion will often appear.Therefore, different fabrics and fabrics in different directions will have different shrinkage, which will also affect the washing way of clothes.
How to measure the shrinkage of fabric?
Several small tips will help you:
- Prepare some tools:A washing machine/iron、A fabric swatch、a tamp measure 、a paper mark
- Then follow these steps:
1.Prepare the sample fabric that used for test,for convenience,we can use the paper Mark to make a 50*50 sample fabric range.
2.Use washing ways or heat the fabric as required.As a sample,we can use the iron to heat the fabric.Pay attention to keep it flat when ironing to avoid additional influence factors.
3.Lay the ironed fabric again and measure radial and weft with a tape measure,write the data down on paper.
How to calculate the fabric shrinkage?
After obtaining the radial and weft dimensions of the fabric data before and after ironing, it can be calculated using the following formula.
- The radial shrinkage rate:
(radial size before ironing - radial size after ironing) ÷ radial size before ironing *100%= radial shrinkage rate
- The weft shrinkage rate :
(weft length before ironing - weft length after ironing) ÷ weft length before ironing *100%= weft shrinkage rate
If the calculated length difference is negative, it means that the fabric has shrunk.
In fact, from the manufacturer's point of view as well as our daily perspective, shrinkage rate can be minimized by preshrunk, changing the fabric or correct washing ways, but zero shrinkage is not possible so far.Just give more tolerance,no matter the fabric or the life!