METHOD OF PREPARING A NONWOVEN WEB OF POLY(VINYL ALCOHOL) FIBERS AND A DISPOSABLE ABSORBENT PRODUCT WHICH INCLUDES THE NONWOVEN WEB

摘要

In the present invention, (1) preparing a poly (vinyl alcohol) polymer aqueous solution defined; (2) extruding this polymer solution through a die having a plurality of orifices under defined conditions to form a plurality of threadlines; (3) While each of these threadlines substantially maintains a uniform viscosity in the radial direction, the viscosity of each threadline increases as the distance from the die increases while exiting the die orifice and reaching a distance of about 8 cm or less. Using a first gas source defined under macroscale disturbance conditions controlled at a rate sufficient to provide a fiber with the desired emulsification and average fiber diameter without significantly breaking the fiber under conditions sufficient to cause the gradual increase. Activating the thread line; (4) drying the thread line using a defined second gas source; And (5) located about 10 to about 100 cm from an opening through which the gas source finally contacting the fiberline with the fiber having an average fiber diameter of about 0.1 to about 30 micrometers and substantially no shorts is present. A method of drawing a nonwoven web of poly (vinyl alcohol) fibers, which consists of randomly depositing on a mobile perforated surface to form a substantially uniform web, wherein the emulsification and drying steps are performed under controlled macroscopic disturbance conditions. This is provided.