Liquid application device and liquid application method

The present invention relates to a liquid application device (1, 100) that is used in the manufacture of absorbent articles, and applies a liquid having a viscosity within the range of 0.05 to 4 Pa*s to a continuously conveyed web (3). The liquid application device (1, 100) comprises: a tank (11) that holds a liquid; a liquid application nozzle (13) that applies the liquid to one surface (3ff) of the web (3); a pump (17) that supplies the liquid within the tank (11) to the liquid application nozzle (13) via a tube (15); a suction device (5, 105) that has a surface (5f, 105f) facing the other surface (3fs) of the web (3); and an airblow nozzle (37) that blows air to a section of the one surface (3ff) of the web (3) where the liquid has been applied. The surface (5f, 105f) of the suction device (5, 105) at least includes a suction area (AS) where the web (3) is suctioned.