Patent ID: 7509823

Claim:
A method for producing a windproof and air-permeable knit fabric, comprising steps of: (a) designing said knit fabric: with parameters of a yarn count between 1 and 0.1 denier, a knitting of 40 to 45 courses per inch, and a yarn shrinkage rate between 30% and 50% in a boiling water; (b) obtaining a gray fabric: made by a machine with said parameters; (c) desizing: shrinking said knit fabric together with a removal of impurities and greasiness on a surface of said knit fabric; (d) pre-setting: a heat setting operation under a temperature between 170.degree. C. and 190.degree. C. for said knit fabric after said desizing; (e) dyeing: by dipping said knit fabric into a dye stuff after said pre-setting step; (f) brushing engineering: a brushing treatment comprising a brushing process and a napping process; and (g) going through a finish process: by adding a nano-scale fluoride to said knit fabric after said brushing engineering step.