METHOD FOR FORMING YARN, HOLLOW YARN, FLAT FOIL AND HOSE-LIKE FOIL AND APPARATUS FOR THEM

摘要

PURPOSE: To enhance the qualities of the subject foils while accelerate working rate by forcing a specific yarn-formable material into a pressurized liquid through a nozzle, moving the liquid in the traveling direction through a channel system and accelerating the flow rate of the liquid correspondingly. CONSTITUTION: The yarn-formable material (for example; cellulose, polyamide and polypropylene), which can be an isotropic or anisotropic, single-phase or multi-phase homogeneous liquid multi-component system, is forced through one or more nozzle openings 3 into liquid (for example; water) which is kept under 2.5 to 250 bars around the nozzle opening 3 and can be heated or cooled. This liquid is moved in the traveling direction through the channel system comprising multiple sections having constant and/or slightly tepered cross- sections and the flow rate of the liquid is accelerated correspondingly and decelerated at the end of the channel system 4 by a diffuser to form the objective foil.