Patent ID: 7182106

Claim:
An infusion method for streaming under a reduced-pressure environment a predetermined quantity of a liquid into a component being a target, utilizing a nozzle in the form of a cylindrical capillary tube, the infusion method comprising: a pressure-adjusting step of placing the target component and the capillary-tube tip portion under a reduced-pressure environment; and an infusion step of supplying to the cylindrical capillary tube liquid to which has been applied pressure higher, by a pressure for delivering the liquid, than the pressure under the reduced-pressure environment, and for causing, for a predetermined duration only, the liquid to flow out from the capillary-tube tip directed at the target component; wherein in SI system units, the following formula is satisfied 2 ⁢ σ a > ρ ( P L ⁢ a 2 8 ⁢ η ) 2 - P a , letting a be the radius of the capillary-tube bore, L be the capillary-tube length, η be the liquid's viscosity coefficient, σ be the liquid's surface tension, ρ be the liquid's density, P be the liquid delivery pressure, and P a be the pressure of the reduced-pressure environment.