Back to results
US 4,066,188 AGranted
Thermoplastic adhesive dispenser having an internal heat exchanger
AssigneeNordson Corporation
InventorsCharles H. Scholl, Larry D. Akers
Life of this patent
Estimating the term…
Abstract
Apparatus for dispensing hot viscous liquids such as molten adhesives, either in a continuous bead or as spaced unitary deposits. In preferred form, the apparatus includes a heat exchanger in the form of a fluid manifold which functions to elevate and maintain the temperature of the molten adhesive, just prior to dispensing it, above that temperature level at which the molten adhesive is supplied to the apparatus.
Claims6
An adhesive dispensing apparatus for extruding hot viscous liquid from a pressurized source onto a substrate surface, comprising:
- a body having a central bore formed therethrough;
- a passage means in said body connected to said central bore for conducting viscous liquid to said central bore;
- a valve seat attached to one end of said central bore;
- a movable valve assembly disposed in said central bore for operative engagement with said valve seat;
- a passageway formed in said valve seat;
- said valve assembly operatively controlling the flow of said viscous liquid through said passageway in said valve seat;
- heater bores formed in said body adjacent to said central bore with heating means disposed therein;
- and
- a plurality of parallel bores formed in said body between said heating means and said central bore, which plurality of parallel bores are concentrically disposed around said valve assembly, and wherein the parallel bores function as heat exchanger means
6 more elements
Dependencies are inferred from the claim text.