The choice of felt also different blankets products according to the use, type and nature of the different ingredients on the raw materials also have different requirements. Such as: filter felt requirements in the filtration of gasoline when the filter efficiency is high, no hair loss. Therefore, the requirements of mixed ingredients in the dead hair, with low rate of impurities, fine fiber, high curl, good velvet. Another example, the shoes are used to pad cotton soles or cotton shoes used in the shoe. Requirements blankets warm and good, low prices, but the color requirements are not high. So the choice of ingredients do not consider the mix of color, do not consider the color, black and white hair can be, generally with a variety of miscellaneous hair to produce.
Cost-effective low-wool fiber generally accounts for 80-85% of the total cost of production. Therefore, the determination of the composition of the mixed production costs greater impact on the premise of ensuring product quality, select the lower grade of raw materials, and as far as possible the use of recycled wool, recycled wool and other raw materials, so not only can reduce costs, but also Expand the raw material resources to solve the problem of raw materials lack of blankets.