Nonwoven fabric manufacturing equipment

The apparatus stabilizes electrospinning by segregating the manufacturing process into two rooms with controlled air flow, using an exhaust system and conditioned air to maintain optimal conditions for fiber production.

JP7875455B2Active Publication Date: 2026-06-18TOYOTA BOSHOKU KK
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Patent Information

Application Number
JP2023013970
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2023-02-01
Publication Date
2026-06-18
Estimated Expiration
2043-02-01

AI Technical Summary

Technical Problem

The existing non-woven fabric manufacturing apparatus faces challenges in maintaining stable electrospinning due to the inflow of outside air through the opening for the carrier, which disrupts temperature and humidity control within the electrospinning housing.

Method used

The apparatus is divided into two equipment rooms: one room blocks direct outside air inflow and includes an electrospinning device with a transport path for ultrafine fibers, while the other allows outside air inflow and houses a dispensing and winding drum. A partition separates these rooms with communication holes, and an exhaust system maintains negative pressure in the first room, while conditioned air is supplied to the second room to control temperature and humidity.

Benefits of technology

This configuration enables stable electrospinning by preventing outside air from entering the first room, allowing precise control of temperature and humidity, thereby ensuring consistent fiber production.

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Abstract

To perform stable electrospinning.SOLUTION: A nonwoven fabric manufacturing device is assembled with: a first equipment chamber where direct inflow of outside air is blocked, provided with an electrospinning apparatus which ejects a spinning dope by electric potential difference to form ultrafine fibers and a conveyance path of a sheet-like substrate for collecting ultrafine fibers ejected from the electrospinning apparatus; a second equipment chamber where direct inflow of outside air is allowed, provided with an unwinding drum which performs unwinding of the sheet-like substrate and a winding drum for performing winding of the sheet-like substrate; a continuous hole formed in a partition wall part for partitioning the first equipment chamber and the second equipment chamber, for making the sheet-like substrate pass; an exhauster for recovering and exhausting the air in the first equipment chamber; and an air supply apparatus for pumping conditioned air to the second equipment chamber.SELECTED DRAWING: Figure 1
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Citation Information

Patent Citations

  • Method for producing fiber and apparatus for producing fiber

    JP2005264401A

  • Electrospinning apparatus

    JP2009127150A

  • Air filter medium and apparatus for manufacturing the same

    JP2011000580A

  • Apparatus for continuous needleless electrospinning of nanoscale or submicron-scale polymer fiber webs onto a substrate

    JP2020504248A

  • Humidity-controlling device and manufacturing apparatus of nonwoven fabric

    JP2024062173A