Production of non-woven fabric, by drawing fiber strands from spinneret, forming fiber strands on conveyor screen belt, and using swinging air jet device to swing fiber strands to-and-fro downstream of drawing air jet device

摘要

Production of a non-woven fabric, comprises drawing fiber strands from spinneret (4) by using drawing air jet device (5); forming fiber strands on conveyor screen belt (7) and advancing same along longitudinal direction; and using swinging air jet device (6) to swing fiber strands to-and-fro downstream of drawing air jet device, upstream of conveyor screen belt and in transverse directions which are transverse to longitudinal direction. Production of a non-woven fabric, comprises: (1) forming fiber strands (81) from a fiber forming resin through a spinneret; (2) drawing the fiber strands from the spinneret by using a drawing air jet device; (3) forming the fiber strands on a conveyor screen belt and advancing the same along a longitudinal direction; and (4) using a swinging air jet device to swing the fiber strands to-and-fro downstream of the drawing air jet device, upstream of the conveyor screen belt and in transverse directions which are transverse to the longitudinal direction, where the fiber strands are formed into wavy patterns which overlap and interlace each other in the transverse directions. An independent claim is also included for an apparatus for making a non-woven fabric, comprising: (1) a spinneret for forming fiber strands; (2) a drawing air jet device disposed downstream of the spinneret for drawing the fiber strands; (3) a conveyor screen belt disposed downstream of the drawing air jet device for, forming and advancing the fiber strands in a longitudinal direction; and (4) a swinging air jet device disposed downstream of the drawing air jet device and upstream of the conveyor screen belt for swinging the fiber strands to-and-fro in transverse directions which are transverse to the longitudinal direction, where the fiber strands are formed into wavy patterns which overlap and interlace each other in the transverse directions.