초록 ▼

An apparatus for applying a viscous material upon a portion of a substrate positioned substantially within a first plane proximate the apparatus during relative movement between the apparatus and the substrate including a nozzle member for selectively dispensing the material in a predetermined patte

An apparatus for applying a viscous material upon a portion of a substrate positioned substantially within a first plane proximate the apparatus during relative movement between the apparatus and the substrate including a nozzle member for selectively dispensing the material in a predetermined pattern and with a predetermined frequency and for eliminating dispensing, dripping and stringing of any residual material after dispensing is stopped, the nozzle including at least one material flow path therethrough having a first end forming a nozzle outlet facing the substrate and a second end in operable communication with a material supply, at least a portion of the material flow path proximate the first nozzle outlet end being substantially linear and positioned at an acute angle with respect to the first plane to eliminate material dripping and stringing.

대표청구항 ▼

Apparatus for depositing a viscous material upon a portion of a substrate which is positioned within a plane proximate said apparatus during relative movement between said apparatus and said substrate in a predetermined direction, comprising: viscous material supply means for supplying said viscous

Apparatus for depositing a viscous material upon a portion of a substrate which is positioned within a plane proximate said apparatus during relative movement between said apparatus and said substrate in a predetermined direction, comprising: viscous material supply means for supplying said viscous material to be deposited upon said substrate; a solid nozzle bar having substantially the configuration of a rectangular solid with the longitudinal extent thereof disposed transversely with respect to said predetermined direction of relative movement between said apparatus and said substrate; an upper surface; and a lower surface disposed parallel to said substrate; a longitudinal bore defined transversely within said solid nozzle bar and fluidically connected to said viscous material supply means through said upper surface of said solid nozzle bar so as to receive a supply of said viscous material from said viscous material supply means; a plurality of channels defined within said solid nozzle bar along said longitudinal extent thereof, fluidically connected at first end portions thereof to said longitudinal bore so as to receive said viscous material from said longitudinal bore, and defining material dispensing outlets, facing said substrate for dispensing said material onto said substrate, at second opposite end portions thereof which are disposed at an acute angle with respect to said lower surface of said solid nozzle bar and said plane of said substrate so as to prevent dripping and stringing of said viscous material when deposition of said viscous material upon said substrate is terminated; longitudinal heating means disposed transversely within said solid nozzle bar at a position adjacent to and upon one side of said longitudinal bore and said plurality of channels, as considered in said predetermined direction of relative movement, for heating said solid nozzle bar and said viscous material to a predetermined temperature; and longitudinal sensor means disposed transversely within said solid nozzle bar at a position adjacent to and upon an opposite side of said longitudinal bore and said plurality of channels, as considered in said predetermined direction of relative movement, and operatively connected to said longitudinal heating means, for sensing the temperature of said solid nozzle bar and controlling said longitudinal heating means so that the temperature of said solid nozzle bar and said viscous material is regulated to said predetermined temperature.