HYDROFORMED COMPOSITE NONWOVEN

摘要

A method for manufacturing a composite nonwoven web material includes extruding continuous filaments from a spinnerette, drawing the filaments by a slot attenuation unit to thin continuous filaments, forming a web of unbonded continuous filaments without thermobonds as the filaments are laid down, hydroentangling the web including continuous spunlaid filaments together with wet or foam formed short fibers including natural and/or synthetic fibers or staple fibers to integrate and mechanically bond and form a thermally unbonded composite nonwoven web material. A moist environment is created at the formation and lay down of the continuous filaments by the steps of laying down the filaments on an already wetted surface, keeping the width of the outlet of the slot attenuation unit open by more than 65 mm and adding liquid at the outlet of the slot attenuation unit.

主权项

1. A method for manufacturing a composite nonwoven web material comprising:
extruding continuous filaments from a spinnerette; drawing the filaments by a slot attenuation unit to thin continuous filaments; forming a web of unbonded continuous filaments without thermobonds as the filaments are laid down; hydroentangling the web comprising continuous spunlaid filaments together with wet or foam formed short fibers comprising natural and/or synthetic fibers or staple fibers to integrate and mechanically bond and form a thermally unbonded composite nonwoven web material; wherein a moist environment is created at the formation and lay down of the continuous filaments by the steps of laying down the filaments on an already wetted surface; keeping the width of the outlet of the slot attenuation unit open by more than 65 mm; and adding liquid at the outlet of the slot attenuation unit.