Process for dyeing by depositing spots of dyebath on moving filaments, by cyclic interruption of said deposit, and device for practicing this process

A spaced dyeing apparatus, comprising:

• a dye applicator for providing a jet of dyestuff;
• an interruption device deformable by flexing to intercept and deflect said jet;
• and
• said interruption device comprising a piezoelectric actuator for effecting said flexing.

A spaced dyeing apparatus, comprising:

• a series of application stations for spaced dyeing of filaments;
• each application station comprising:
• (a) a nozzle for directing a jet of dyestuff downwardly;
• (b) an interruption device capable of flexing to intercept and deflect said jet;
• and
• (c) said interruption device comprising a lengthwise extending two-strip arm in combination with a linear actuator, actuation of said actuator in a lengthwise direction of said arm causing said arm to flex.

A spaced dyeing apparatus comprising:

• a series of dyeing stations for forming spots of dyestuff of different colors on moving filaments;
• each said station comprising dye applicator means for deposition of said dyestuff, and interruption means for interrupting said deposition;
• and
• said interruption device comprising a piezoelectric actuator capable of effecting a flexing motion and operatively connected to a bar to move said bar due to said flexing motion between a position allowing said deposition and a position interrupting and diverting said deposition.

Apparatus for dyeing by deposition of spots of dyebaths of different colors on moving filaments, comprising:

• a series of application stations;
• said stations including dyebath applicators for successively applying said dyebaths to said filaments, and interruption devices for cyclic or pseudo-random interruption of said applying;
• said dyebath applicators producing downwardly directed jets of dyebaths;
• and
• said interruption devices extending generally vertically and comprising deformable piezoelectric flexible actuators.

A process of spaced dyeing filaments, comprising the steps of:

• passing the filaments through a series of dyeing stations;
• directing jets of dyestuffs of different colors downwardly towards said filaments to dye said filaments as said filaments pass through said dyeing stations;
• diverting said jets to interrupt temporarily dyeing of said filaments to create a spaced dyeing effect on said filaments;
• and
• said diverting being effected by flexing of elements extending generally parallel to said jets.