초록 ▼

A distinctive method and apparatus for depositing a pattern of material, such as hot-melt adhesive, onto a substrate comprises a supplying mechanism for forming a first and at least a second substantially continuous stream of the selected material, and a gas-directing mechanism for forming a plurali

A distinctive method and apparatus for depositing a pattern of material, such as hot-melt adhesive, onto a substrate comprises a supplying mechanism for forming a first and at least a second substantially continuous stream of the selected material, and a gas-directing mechanism for forming a plurality of gas streams. The gas streams have selected velocities and are arranged to entrain the material streams to impart a swirling motion to each of the material streams as it moves toward the substrate. A transport mechanism moves the substrate relative to the supply mechanism along a selected machine direction. A regulating mechanism controls the supplying mechanism and gas-directing mechanism to direct the material stream in a selected path toward the substrate and deposit the material in adjacent semi-cycloidal patterns on the substrate while closely controlling a selected cross-directional positioning of one or more of the deposited patterns.

대표청구항 ▼

An apparatus for depositing a pattern of material onto a substrate, comprising: a first nozzle for supplying a first stream of a selected viscous material; a second nozzle for supplying at least a second stream of a selected viscous material, said second nozzle located in a position which is offset

An apparatus for depositing a pattern of material onto a substrate, comprising: a first nozzle for supplying a first stream of a selected viscous material; a second nozzle for supplying at least a second stream of a selected viscous material, said second nozzle located in a position which is offset from said first nozzle along a substrate movement direction of said apparatus and staggered from said first nozzle along a cross-direction of said apparatus; gas directing means for forming a plurality of gas streams, which have selected velocities and are arranged to entrain said first and second material streams to impart a swirling motion to each of the material streams as it moves toward said substrate; transport means for moving said substrate past said nozzles along said substrate movement direction; and regulating means for controlling said material streams and said gas streams to direct each of said material streams in a selected path toward said substrate and deposit said material thereon to form adjacent semi-cycloidal patterns of said material on said substrate.