Melt spinning apparatus

Plastic article or earthenware shaping or treating: apparatus – Shaping orifice and downstream work contacting gaseous... – Orifice for filaments or fibers

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2641761, 425464, D01D 5092

Patent

active

050591045

ABSTRACT:
A melt-spinning apparatus includes a feed device for feeding a molten polymer composition from at least one extruder to a multiplicity of spinning orifices provided by a plurality of spinnerets for producing a multiplicity of discrete continuous extrudates emerging from the orifices in a generally downward direction; quenching devices for cooling the extrudates and for solidifying them to form a multiplicity of discrete continuous filaments; take-up and stretching devices provided downstream from the orifices for contacting and stretching the filaments; the quenching devices include guides for directing at least one stream of a cooling gas having a quenching temperature onto a portion, at least, of the extrudates; the orifices or spinnerets are arranged to form an annular array and a portion, at least, of the quenching devices is provided to direct the cooling gas stream in a substantially radial manner onto the extrudates that emerge from the orifices in the annular array.

REFERENCES:
patent: 3070839 (1963-01-01), Thompson
patent: 3274644 (1966-09-01), Massey et al.
patent: 3632719 (1972-01-01), Nozawa
patent: 3824050 (1974-07-01), Balk
patent: 4756679 (1988-07-01), Stibal et al.
patent: 4804511 (1989-02-01), Pieper et al.
patent: 4838774 (1989-06-01), Balk

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