Title:
防音用途の不織布
Document Type and Number:
Japanese Patent JP7194192
Kind Code:
B2
Abstract:
The invention relates to a method for manufacturing a nonwoven fabric having an air permeability of 2000 l/m2/s or less when measured at a pressure difference of 200 Pa according to EN ISO 9237, the method comprising the steps of: providing at least two sets of fibers, wherein a first fiber set comprises a significant level of splittable fibers and a second fiber set comprises a low level of splittable fibers or no splittable fibers; using the first fiber set to form at least one first fibrous web in a first web formation process and using the second fiber set to form at least one second fibrous web in a second web formation process; stacking the first and second webs so obtained to provide a multilayer web including two distinct layers of fibrous webs; and bonding the multilayer web. The invention further relates to a nonwoven fabric obtainable by such process and the use of such nonwoven fabric in acoustic isolation applications.
Inventors:
El-Yusofi Ali
Biyal Hekea Raas
Biyal Hekea Raas
Application Number:
JP2020545698A
Publication Date:
December 21, 2022
Filing Date:
January 29, 2019
Export Citation:
Assignee:
FIBERTEX NON-WOVEN ACTIESEL SCUBS
International Classes:
D04H1/488; D04H1/49; D04H1/498
Domestic Patent References:
| JP2001279567A | ||||
| JP2005208599A | ||||
| JP2009522597A |
Foreign References:
| WO2009126793A1 | ||||
| EP2348146A1 |
Attorney, Agent or Firm:
Patent Attorney Corporation Maeda Patent Office