The present invention provides a nozzle assembly adapted to apply adhesives uniformly when forming one or more adhesive lines on upper surface of a fibrous web continuously running. A nozzle assembly 12 in an adhesive coater 11 to form one or more adhesive lines extending in a machine direction MD on an upper surface 2a of a fibrous web 2 continuously running in the machine direction MD has first, second and third working regions arranged in this order from upstream toward downstream in the machine direction MD as described below: (1) the first working region adapted to come in close contact with the fibrous web 2 fully in a width direction of the fibrous web 2 (2) the second working region comprising first partitioning regions are arranged intermittently in a cross direction being orthogonal to the machine direction MD and adhesive outlets each defined between each pair of the adjacent first partitioning regions and (3) the third working region including second partitioning regions arranged intermittently in the cross direction downstream of the first partitioning regions and stepped regions each defined between each pair of the adjacent second partitioning regions so that surfaces of the respective stepped regions facing the upper surface 2a of the fibrous web 2 are spaced from the upper surface 2a of the fibrous web 2 at least by 0.1mm.
