Invention Grant
- Patent Title: Laminated nonwoven fabric
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Application No.: US16488324Application Date: 2018-02-21
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Publication No.: US11225048B2Publication Date: 2022-01-18
- Inventor: Kumi Oyama , Makoto Nakahara , Hiroshi Kajiyama
- Applicant: Toray Industries, Inc.
- Applicant Address: JP Tokyo
- Assignee: Toray Industries, Inc.
- Current Assignee: Toray Industries, Inc.
- Current Assignee Address: JP Tokyo
- Agency: RatnerPrestia
- Priority: JPJP2017-036094 20170228,JPJP2017-242610 20171219
- International Application: PCT/JP2018/006295 WO 20180221
- International Announcement: WO2018/159421 WO 20180907
- Main IPC: B32B5/26
- IPC: B32B5/26 ; A41G7/00 ; B32B5/02 ; D04H1/4374

Abstract:
The present invention provides a laminated nonwoven fabric achieving both handling properties during manufacturing and use and adherence to a skin surface at a high level particularly when used for a face mask. The laminated nonwoven fabric includes a nonwoven fabric layer (A) and a nonwoven fabric layer (B). The nonwoven fabric layer (A) is formed from a fiber A having a single fiber diameter of 50 nm or more and 800 nm or less, and the nonwoven fabric layer (B) is formed from a fiber B having a single fiber diameter of 3 μm or more and 30 μm or less. The nonwoven fabric layer (B) includes 15 to 40% by mass of a fiber B1 to all of the fibers constituting the nonwoven fabric layer (B), the fiber having tensile strength of 2.0 cN/dtex or less as measured based on JIS L 1015: 2010 8.7.2. The nonwoven fabric layer (B) Includes a fiber B2 having tensile strength exceeding 2.0 cN/dtex as measured based on JIS L 1015: 2010 8.7.2. The nonwoven fabric layer (A) is disposed as an outermost layer of at least one surface.
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