The process of brushing flannel involves feeding a thick piece of material into a fine-toothed metallic combing machine. The fine metallic brush combs the fabric.
Combing the fabric allows it to raise the fine fibers from yarn that is loosely spun. This forms a nap, which is the characteristic that gives flannel its unique appeal.
Flannel is often made from cotton, wool, or synthetic fiber. It first originated from Europe where they used to card wool to provide a softer warmer fabric. This was especially important because of the limited heating abilities back then.
Flannel is woven in two types of weaves, twill or plain weave. It’s difficult to tell a flannel’s weave if it’s napped on both sides, but you can check its tag for more information. Weave construction is important in determining a material’s breathability and durability. The plain weave pattern is the most common and gives off a strong finish. While the twill weave allows for more breathability.
The color of flannel was originally achieved through mixing brown, blue, white and black wools in specific proportions. Currently, however, the color is obtained through the use of dyes. In cases where lighter shades of flannel were required, then, Sulphur dioxide was used to bleach the fabric.
There are different types of flannels, such as;