Abstract: In this paper, permeable performances of size paste into warp were attempted to test and to evaluate by warp sedimentation method. The factors such as viscosity, temperature, pH value, penetrating agent, are studied with relation to warp sedimentation time. As a result, permeable performance was characterized well by warp sedimentation method when size paste was low viscosity. Permeable performance was greatly improved by using penetrating agent which did not change the viscosity of the size paste.

Key words: size paste, permeable performance, warp sedimentation method