[특허]Filter element utilizing shaped particle-containing nonwoven web

Filter element utilizing shaped particle-containing nonwoven web 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A62B-023/02 B01D-053/04
출원번호	US-0133188 (2009-12-03)
등록번호	US-8535406 (2013-09-17)
국제출원번호	PCT/US2009/066494 (2009-12-03)
§371/§102 date	20110607 (20110607)
국제공개번호	WO2010/080251 (2010-07-15)
발명자 / 주소	Billingsley, Britton G. Jones, Marvin E.
출원인 / 주소	3M Innovative Properties Company
대리인 / 주소	Hanson, Karl G.
인용정보	피인용 횟수 : 0 인용 특허 : 79

초록

A filter element utilizes a porous shape-retaining self-supporting non-woven web. The web includes thermoplastic elastomeric polymer fibers and active particles disposed in the fibers. The web also possesses a three-dimensional deformation.

대표청구항 ▼

1. A filter element comprising: a porous shape-retaining self-supporting non-woven web, the web comprising thermoplastic elastomeric polymer fibers and active particles disposed in the fibers;wherein the web possesses a three-dimensional deformation characterized by a uniform density along a thickness direction of the web. 2. The filter element of claim 1, wherein the deformation comprises a surface feature characterized by a displacement from a planar configuration of at least 0.5 times the web thickness. 3. The filter element of claim 1, wherein the web thickness varies no more than 2 times the web thickness along at least one direction across the deformation. 4. The filter element of claim 1, wherein the three-dimensional deformation is characterized by a density gradient of less than 20 to 1. 5. The filter element of claim 4, wherein three-dimensional deformation is characterized by a density gradient of less than 10 to 1. 6. The filter element of claim 1, wherein the: deformation is characterized by a thickness that varies by no more than a factor of 5 along at least one direction across the deformation. 7. The filter element of claim 1, wherein: the deformation comprises a concave surface characterized by a deviation from a planar configuration of at least 0.5 times the web thickness at that location. 8. The filter element of claim 7, wherein the concave surface is characterized by a deviation of at least 1 times the web thickness from the planar configuration. 9. The filter element of claim 7, wherein the concave surface is characterized by a deviation of at least 5 times the web thickness from a planar configuration. 10. The filter element of claim 1, wherein the web is characterized by a density of at least 30% of a density of a packed bed made with similar active particles. 11. The filter element of claim 1, wherein the web comprises more than 60 weight percent sorbent particles enmeshed in the web. 12. The filter element of claim 1, wherein the web comprises at least 80 weight percent sorbent particles enmeshed in the web. 13. The filter element of claim 1, wherein the fibers comprise at least one of: a thermoplastic polyurethane elastomer, a thermoplastic polybutylene elastomer, a thermoplastic polyester elastomer, thermoplastic elastomeric polyolefin, and a thermoplastic styrenic block copolymer. 14. An article according to claim 1, wherein the active particles comprise at least one of: a sorbent, a catalyst and a chemically reactive substance. 15. A respiratory protection system comprising: an interior portion that generally encloses at least the nose and mouth of a wearer;an air intake path for supplying ambient air to the interior portion; anda filter element disposed across the air intake path to filter such supplied air, the filter element comprising: a porous shape-retaining self-supporting non-woven web, the web comprising thermoplastic elastomeric polymer fibers and active particles disposed in the fibers;wherein the web possesses a three-dimensional deformation characterized by a uniform density along a thickness direction of the web. 16. The respiratory protection system of claim 15, wherein the respiratory protection system is a maintenance free respirator. 17. The respiratory protection system of claim 15, wherein the respiratory protection system is a powered air purifying respirator.

이 특허에 인용된 특허 (79)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Filter element utilizing shaped particle-containing nonwoven web 원문보기

초록

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연합인증

Filter element utilizing shaped particle-containing nonwoven web 원문보기

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