Compared with glass fiber and carbon fiber, flax fiber is soft. Through proper degumming treatment, reasonable carding process, and needle-punching processing method, it can produce non-woven fabric reinforced fiber felt with quantitative and bulkiness meeting the requirements. At the same time, the fiber damage is small, and the thickening effect is good. As a reinforcing material, it has the advantages of short production process, no weaving, and low processing cost, which is conducive to energy conservation, And environmental protection.

The price of high-quality pure linen sold on the market is high. The price can also reflect the quality of linen. High-quality primary-color linen is brown, shiny and evenly absorbent. The flax is not good in quality. It is treated as a soft fiber flax, which absorbs water unevenly and will turn black after wetting. Check whether the thickness of the longitude and latitude lines is uniform through light transmission. If the warp and weft are too uniform, it may be cotton fabric.