Title:
PRODUCTION METHOD OF NONWOVEN FABRIC
Document Type and Number:
Japanese Patent JP2023059820
Kind Code:
A
Abstract:
To provide a production method of nonwoven fabric fuses, by heating rollers, a resin layer having a slow crystallization rate.SOLUTION: A production method of nonwoven fabric includes: a fiber ejection step of ejecting fibers from a plurality of fiber ejection units; a sheet conveyance step of conveying a sheet-like fiber layer in a transport direction, while collecting, on a conveyance surface, bundles of fibers ejected from the fiber ejection units to make the sheet-like fiber layer; and a fusion step of applying, by heating rollers, heat and pressure to the sheet-like fiber layer to fuse it. The fiber ejection unit includes at least: a first fiber ejection unit for forming a first layer in a thickness direction on the conveyance surface; and a second fiber ejection unit for ejecting fibers of a material different from the material at the first fiber ejection unit so as to form a second layer in the thickness direction on the conveyance surface.SELECTED DRAWING: Figure 4
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Inventors:
JINNO FUMIO
XU XIAO SHI
XU XIAO SHI
Application Number:
JP2022131863A
Publication Date:
April 27, 2023
Filing Date:
August 22, 2022
Export Citation:
Assignee:
OJI HOLDINGS CORP
International Classes:
D04H3/16; B32B5/22
Attorney, Agent or Firm:
Patent Attorney Corporation Shuwa Patent Office