Abstract: To overcome the problem of low weaving efficiency when weaving superfine high-density (740/620) polyester down-proof fabric on air-jet loom, the paper analyzed the parameters for warping process, size formula, sizing process and loom set and put forward some measures for improving the parameters, so that the weaving efficiency can reach over 93%.

Key words: superfine high-density; down-proof fabric; warping; sizing; weaving