Patent ID: 7434981

Claim:
A manufacturing method of a metal paste having a viscosity of 60(Pa·s) or larger at a measured value by a rotational viscometer rotating at a shear rate of 2s −1 , or 30(Pa·s) or larger at the measured value by the rotational viscometer rotating at a shear rate of 10s −1 , comprising: feeding a paste-like material containing a metal filler into a gap between whetstones which are relatively rotated while facing with each other, kneading, mixing and dispersing the paste-like material containing a metal filler while keeping the temperature of 40° C. to 80° C. so that the viscosity of the paste-like material containing a metal filler is within a range of 10 to 40(Pa·s) measured by the rotational viscometer rotating at a shear rate of 2s −1 , and within a range of 2 to 20(Pa·s) measured by the rotational viscometer rotating at a shear rate of 10s −1 , and by adjusting a gap interval “dg” of the whetstones in a range of (⅕) “dm” to 2 “dm” when the gap interval of the whetstones is represented by “dg” and a maximum particle size of the metal filler in the paste material is represented by “dm.”