Apparatus for coating articles with adhesive
AssigneeUSM Corporation
InventorGordon V. Sprague, Jr.
Life of this patent
Estimating the term…
Abstract
Process and apparatus for applying adhesive to a surface and for bonding and particularly for attaching a tread member to a shoe in which an adhesive applicator including a jet providing a gas stream having a rotational component is constructed to extrude viscous fluid adhesive to form a filament and to lay down the filament while still soft and adhesive as a band of overlapping loops directly on the attaching surface of an element to be adhered. The elements to be joined are pressed together with the adhesive between them and the adhesive is hardened.
Claims4
Apparatus for depositing a hot molten thermoplastic resinous adhesive material onto a workpiece surface as a band of overlapping loops comprising an applying nozzle having an extrusion orifice at one end thereof, supply means connected to said nozzle for forcing said material through said orifice to form a thin filament for deposition on said surface, air supply means for directing a stream of air around said filaments, said air supply means being constructed and arranged to impart to said stream of air a component in the direction of said work surface for attenuating said filament and a rotational component for moving said filament in a circular path to generate a substantially conical envelope terminating on said workpiece surface, and means for causing relative movement between said nozzle and said workpiece surface in a predetermined path at substantially right angles to said conical envelope, said nozzle and said workpiece being spaced from one another a direct distance predetermined to deposit said material on said surface as a band of overlapping loops.
Dependencies are inferred from the claim text.