Method and device to manufacture synthetic endless filaments
AssigneesMaschinenfabrik Rieter AG, Zimmer, Inc.
InventorsGunter Koschinek, Dietmar Wandel
Life of this patent
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Abstract
Filaments emerging from the nozzle plate of a spinneret are cooled by being passed through a cooling channel. The motion of the filaments through the cooling channel serves to suck-in air through an air inlet arrangement of the cooling channel. The air inlet arrangement includes an upper air inlet which sucks-in air at the underside of the nozzle plate, so that the filaments are contacted by the cooling air immediately upon emerging from the nozzle plate. Contact of the cooling air with the filaments (which are drawn off at a speed of at least 2400 m/min) takes place throughout the length of the cooling channel.
Claims14
A method for spinning and cooling synthetic, multifil, endless filaments, comprising the steps of:
- spinning filaments from apertures of a nozzle plate at a draw-off speed of at least 2400 m/min., and
- passing the filaments through a cooling channel disposed beneath the apertures so that the filament travel draws an air current inwardly through air inlet means of the cooling channel and into cooling relationship with the filaments throughout the length of the cooling channel, a portion of air current being drawn in at an upper end of the cooling channel and contacting the filaments immediately as the filaments emerge from the apertures, and additional portions of the air current being drawn in throughout the length of the cooling channel.
Apparatus for spinning and cooling synthetic, multi-fil, endless filaments, comprising the steps of:
- a spinning nozzle having apertures from which filaments are drawn, and
- a cooling channel disposed beneath the apertures and through which the filaments are passed, the cooling channel including air inlet means for enabling the filament travel to draw a current of cooling air into the cooling channel and into cooling relationship with the filaments throughout the length of the cooling channel, said inlet disposed at an upper end of the cooling channel such that the filaments are contacted by the cooling air immediately upon emerging from the nozzle, and additional inlets disposed throughout the length of the cooling channel.
Dependencies are inferred from the claim text.