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US 5,849,083 AGranted
Die member in a cross-head die apparatus
AssigneeCamden Extrusion Tool & Design
InventorJames A. Milliman
Life of this patent
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AssigneeCamden Extrusion Tool & Design
InventorJames A. Milliman
Estimating the term…
A cross-head die for applying one or more layers of coating materials to a single, longitudinally fed, filamentary member, or to a plurality of such members in spaced, side-by-side relation. Tip and die members of relatively flat, wafer-like configuration are placed in a cylindrical cavity of the body member of the apparatus with central openings in each of the tip and die members coaxially arranged and a protrusion surrounding the opening in the tip extending into the opening in the die. Flowable coating material is injected through a radial opening in the body member and flows in both directions about an annular passageway formed by cooperatively arranged grooves in the peripheries of the tip and die members. The coating material flows from the annular passageway to the die aperture through opposing, spaced, angularly arranged surfaces on the tip and die members. In an embodiment for applying two layers of coating material, two tip members and a single die member, all of wafer-like configuration are employed, and in an embodiment for coating multiple members the apertures in the tip and die are of oblong configuration.
A die member for positioning in cross-head die apparatus for applying a layer of flowable coating material to an elongated, filamentary member moving axially through said die member and a cooperating tip member, said die member comprising a unitary blank including a cylindrical peripheral surface of predetermined diameter and circumference, front and rear surface portions in respective, first and second spaced, parallel planes, a through central opening extending between said first and second planes said cylindrical surface extending between said first and second planes over a first portion of said circumference and from said first plane for a portion of the distance to said second plane over a second portion of said circumference, and a peripheral groove formed as a continuous surface having an arcuate cross-section extending between said cylindrical surface and said second plane over said second portion of said circumference.
Dependencies are inferred from the claim text.