Patent ID: 6845653
Filing Date: 2005-01-25
Classification: B05C,G01N

Abstract:
1. An apparatus for testing a coating fluid for runnablilty, the fluid having surface tension, viscosity, elasticity and dilatant behavior which influence the stretch of the fluid, the apparatus comprising: a pressurized container adapted for receiving a quantity of the coating fluid, the container having an outlet arrangement; the outlet arrangement comprising a tube and flow rate regulating means for regulating a flow rate of the fluid through the tube, the tube having an opening for discharging the fluid which falls under the influence of gravity, the flow rate regulating means being operated to adjust the flow rate of the fluid until a continuous, ripple-free stream of fluid leaves the opening; and flow rate measuring means for measuring a minimal flow rate at which the fluid leaves the opening in the continuous, ripple-free stream, the runnability and stretch being a function of the measured minimum flow rate.