At the fourteenth China International Exhibition on Textile Fabrics and Accessories (Autumn and Winter) just concluded, the new hollow fiber fabrics exhibited by Wujiang Fuhua Weaving Co., Ltd. were well received by fabric manufacturers and apparel manufacturers. According to reports, the use of such fabrics made of down jacket, not only better thermal insulation, and feel soft, texture is more lightweight. Down jacket fabrics currently on the market, the majority of fabrics using coating or calendering process, to achieve the effect of warmth. However, such a complex processing method, and the use of coating methods will make the fabric more emphasis on processing, but with calender processing, it is easy to make down the cashmere down phenomenon. In order to meet the requirements of down jacket in the future development of "lightness, fashion, warmth" and to adapt to the concept of "light equipment" introduced by down jacket manufacturers, Fuhua Company makes use of hollow fiber to create a hollow fiber fabric which forms an "air layer" inside the fabric. In the commonly used fabrics, the thermal conductivity of nylon is 0.3, the thermal conductivity of polyester is 0.0844, the thermal conductivity of cotton is 0.072, and the thermal conductivity of still air is only 0.026. In Fuhua's new fabric, the fibers in the woven fabric are hollow, so when the fabric is molded, the next hollow fiber is equivalent to forming an "air layer," just like a two-layer mug , This road "air layer" so that the fabric thermal conductivity with the characteristics of still air. Fuhua company R & D staff told the author, for the down jacket manufacturers, to improve the thermal properties of fabrics, create the same warm down jacket, you can reduce the amount of filling, thereby saving costs and increase profits. In addition, according to the staff, the weight of hollow fiber fabrics can be reduced by 10% to 25%, which will not only use the fabric made of more lightweight down jacket, but also reduce the cost of business fabrics transport.