Abstract: A single-faced pile fabric is disclosed, including a plain knitted face and a pile face, a yarn of the plain knitted face has a shrinkage of 14-16%, a yarn of the pile face has a shrinkage of 9-10%, and a connection yarn configured for connecting the plain knitted face and pile face has a shrinkage of 29-31%.

Abstract: A cam and a cam structure of a circular knitting machine include a cam body, and the cam body is successively defined with a needle inlet groove, a needle running groove and a needle outlet groove, the needle running groove is in communication with the needle inlet groove and the needle outlet groove, a width of the needle running groove is between 3.1 mm-3.3 mm, and a knitting needle is moved in the needle running groove with a width between 3.1 mm-3.3 mm, so that increased stroke of the knitting needle due to the inertia of upward and downward movements can be reduced. The density is increased by a range of between 5 and 10 mesh per inch.