Title:
積層不織布
Document Type and Number:
Japanese Patent JP6801643
Kind Code:
B2
Abstract:
There is provided a laminated nonwoven fabric having excellent sound absorbing performance in a low frequency range, the laminated nonwoven fabric having a skin layer and a base material layer, the skin layer having a nonwoven fabric A, the nonwoven fabric A having a density of 100 to 500 kg/m 3 , a thickness of 0.5 to 2.5 mm, and an air permeability of 4 to 40 cm 3 /cm 2 /s; and the base material layer having a nonwoven fabric B, the nonwoven fabric B having a basis weight of 200 to 500 g/m 2 and a thickness of 5 to 40 mm.
Inventors:
Hiroshi Kajiyama
Omoridaira
Kenichi Sakai
Omoridaira
Kenichi Sakai
Application Number:
JP2017505397A
Publication Date:
December 16, 2020
Filing Date:
March 10, 2016
Export Citation:
Assignee:
TORAY INDUSTRIES,INC.
International Classes:
B32B5/26; D04H1/4374; D04H1/4382; G10K11/168
Domestic Patent References:
| JP10247085A | ||||
| JP10207469A | ||||
| JP2007039826A | ||||
| JP2011017104A | ||||
| JP2013147771A | ||||
| JP2009000843A | ||||
| JP2015030218A |
Foreign References:
| WO2005019783A1 |