Quenching method and apparatus
AssigneeThe Bouligny Company
InventorPhillip E. Lemond
Life of this patent
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Abstract
A method and apparatus for quenching synthetic filaments such as synthetic yarn filaments as they exit a plurality of openings in an extrusion die in a downward direction and in an annular pattern. A quenching head is provided with quenching gas from a source, and the quenching head includes first and second nozzles which are disposed adjacent and beneath the extrusion die and within the annular pattern of filaments, and each of the nozzles is formed to cause the quenching gas to pass therefrom generally radially toward the annular pattern of filaments and at a predetermined angle directed upwardly with respect to a horizontal plane through the nozzle to provide a more uniform quenching of all of the filaments in the annular pattern.
Claims12
Apparatus for quenching synthetic filaments such as synthetic yarn filaments as they exit at a plurality of openings for an extrusion die which is formed to cause said filaments to exit vertically downwardly in an annular pattern and in substantially straight parallel paths, said quenching apparatus including:
- a) a source of quenching gas;
- and
- b) quenching head means connected to said source of quenching gas and adapted to be disposed adjacent and beneath said extrusion die and within said annular pattern of filaments exiting therefrom, said quenching head means including:
- i) first nozzle means formed to cause said quenching gas to pass therefrom in a generally radial direction toward said annular pattern of filaments as they exit said die openings and at a predetermined angle directed upwardly with respect to a horizontal plane through said first nozzle means;
- and
- ii) second nozzle means located beneath and adjacent said first nozzle means and formed to cause said quenching gas to pass therefrom in a generally radial direction and toward said annular pattern of filaments at a point beneath the point where the quenching gas directed by said first nozzle means initially passes over said filaments, said second nozzle means causing said quenching gas to flow at a predetermined angle directed upwardly with respect to a horizontal plane through said second nozzle means.
A method of quenching a plurality of filaments such as synthetic yarn filaments as they exit at a plurality of openings in an extrusion die which is formed to cause said filaments to exit in a vertically downward direction in an annular pattern and in substantially straight parallel paths, said method comprising the steps of:
- a) providing a source of quenching gas;
- b) creating first and second flow paths for said quenching gas directed generally radially outwardly from a position within said annular pattern of exiting filaments, with said first flow path being disposed above said second flow path, said first and second flow paths each being directed upwardly at a predetermined angle to a horizontal plane passing through said annular pattern of exiting filaments such that the downward forces imposed on said quenching gas by its contact with the downwardly exiting filaments will be at least partially offset by the upwardly directed first and second flow paths of said quenching gas.
Dependencies are inferred from the claim text.