Sleepwear can be described as nightgowns, pyjama sets, short and tank sets and nightshirts. Cotton, silk, satin, flannel and wool are some of the most popular fabrics used in the production of sleepwear. Sleepwear in China is known to have no government regulations on the use of formaldehyde when it comes to the production of sleepwear. For this reason it is essential to have a sleepwear inspection performed during all stages of manufacturing to ensure your product conforms to International Standards.
Manufacturers of sleepwear must perform the following quality control and inspection test's to ensure the sleepwear meets the international requirements.
- Breaking strength
- Tearing strength
- Yarn distortion and slippage resistance
- Textile bursting strength
- Perspiration tests
- Fabric appearance
Flammability of Various Textiles
The flammability of textiles inspection test is used for the evaluation of flammable characteristics and the durability of specific textiles used in the manufacturing of sleepwear. This test is extremely important to perform on sleepwear that's manufactured in China. In 2007, manufacturers were using at times 900 more than the allowable use of formaldehyde. Sleepwear has actually been reported to have caught on fire due to high amounts of formaldehyde.
Distortion of Yarn
The distortion of yarn test is used to accurately identify the propensity of yarns to shift or distort in a fabric. The distortion of the fabric will result in changes to the appearance of the yarn. These appearance changes are also known as “finger marks” or “shift marks.” Sleepwear fabrics must be tested in their original state and again following laundering.
The tearing strength test assesses the tearing strength of the sleepwear fabric. Measurements for the fabric are taken by a single rip procedure using a constant rate of extension tensile testing machine.