Nonwoven laminate
US-12152326-B1 · Nov 26, 2024 · US
Crimped conjugated fiber and non-woven fabric comprising the fiber
US9863067B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9863067-B2 |
| Application number | US-201113637382-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 4, 2011 |
| Priority date | Apr 16, 2010 |
| Publication date | Jan 9, 2018 |
| Grant date | Jan 9, 2018 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The present invention provides a crimped conjugated fiber having a crimpable cross-sectional configuration wherein a cross section of the fiber comprises at least two portions: a portion (a) and a portion (b); the portion (a) comprises a propylene polymer (A) and the portion (b) comprises a propylene/α-olefin random copolymer (B); the propylene polymer (A) has Mz/Mw(A) and the propylene/α-olefin random copolymer (B) has Mz/Mw(B) wherein the difference thereof is in the range of 0.10 to 2.2; and the propylene polymer (A) has a melting point [Tm(A)] and the propylene/α-olefin random copolymer (B) has a melting point [Tm(B)] wherein the difference thereof exceeds 10° C. The present invention also provides a non-woven fabric comprising the crimped conjugated fiber.
First claim
Opening claim text (preview).
The invention claimed is: 1. A crimped conjugated fiber having a cross-sectional configuration wherein a cross section of the fiber comprises at least two portions: a portion (a) and a portion (b), the mass ratio of the portion (a) to the portion (b) [(a):(b)] is in the range of 10:90 to 60:40, the portion (a) comprises a propylene polymer (A) and the portion (b) comprises a propylene/α-olefin random copolymer (B), the propylene polymer (A) has Mz/Mw(A) and the propylene/α-olefin random copolymer (B) has Mz/Mw(B) wherein the difference thereof [Mz/Mw(A)−Mz/Mw(B): ΔMz/Mw] is in the range of 0.10 to 2.2, and the propylene polymer (A) has a melting point [Tm(A)] and the propylene/α-olefin random copolymer (B) has a melting point [Tm(B)] wherein the difference thereof exceeds 10° C., wherein the crimped conjugated fiber has an eccentric core-sheath configuration in which the portion (a) is a core (a′) and the portion (b) is a sheath (b′), and wherein [Tm(A)] is higher than [Tm(B)]. 2. The crimped conjugated fiber according to claim 1 , wherein the propylene polymer (A) is a propylene homopolymer. 3. A non-woven fabric comprising the crimped conjugated fiber described in claim 2 . 4. The non-woven fabric according to claim 3 , wherein the crimped conjugated fiber is thermally fusion bonded by embossing. 5. A non-woven fabric comprising the crimped conjugated fiber described in claim 1 . 6. The non-woven fabric according to claim 5 , wherein the crimped conjugated fiber is thermally fusion bonded by embossing.
Assignees
Inventors
Classifications
Olefin series · CPC title
Topsheet, i.e. the permeable cover or layer facing the skin · CPC title
characterised by its apertures, e.g. perforations · CPC title
- D01F8/06Primary
with at least one polyolefin as constituent · CPC title
characterised by the shape · CPC title
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Frequently asked questions
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- What does patent US9863067B2 cover?
- The present invention provides a crimped conjugated fiber having a crimpable cross-sectional configuration wherein a cross section of the fiber comprises at least two portions: a portion (a) and a portion (b); the portion (a) comprises a propylene polymer (A) and the portion (b) comprises a propylene/α-olefin random copolymer (B); the propylene polymer (A) has Mz/Mw(A) and the propylene/α-olefi…
- Who is the assignee on this patent?
- Morimoto Hisashi, Mitsui Chemicals Inc
- What technology area does this patent fall under?
- Primary CPC classification D01F8/06. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Jan 09 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).