[특허]Post-treatment of nonwoven webs

Post-treatment of nonwoven webs 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-039/16
출원번호	US-0858182 (1992-03-26)
발명자 / 주소	Hassenboehler Jr. Charles B. (Knoxville TN) Wadsworth Larry C. (Knoxville TN)
출원인 / 주소	The University of Tennessee Research Corporation (Knoxville TN 02)
인용정보	피인용 횟수 : 133 인용 특허 : 0

초록

A method for post-treating a precursor nonwoven web including consolidating the web laterally and thereby reducing the maximum pore size measure of the web. The resultant nonwoven web is also disclosed as is utilization of the product web as a filter.

대표청구항 ▼

A nonwoven web made from a precursor nonwoven web comprising randomly deposited nonelastomeric thermoplastic fibers and being uniaxially drawn and heat set, wherein the uniaxial heating and drawing are carried out continuously by passing the precursor web into an oven at a first linear velocity and withdrawing the precursor web from the oven at a second linear velocity and wherein the ratio of the second velocity to the first velocity ranges from about 1.1:1 to 2:1, whereby a majority of the fibers are consolidated and aligned generally in the direction of draw and a minority of segments of fibers are disposed crosswise or transversely to the direction of draw, whereby the web is characterized by a maximum pore size of less than 80% that of the precursor web and has an elasticity in the cross direction of at least 70% recovery from a 50% elongation in the cross direction. A method for post treating a nonwoven web which comprises: (a) selecting a precursor nonwoven web made of randomly collected nonelastomeric thermoplastic fibers having a crystallinity of at least 30%, said web having a maximum processing draw ratio at break of less than 4 at a temperature at least 10°F. less than the melting point of the precursor thermoplastic and at a strain rate of at least 2500% /min, and a maximum pore size measure of from 4 to 250 microns based on ASTM F316-86; (b) heating the precursor web at a temperature between the softening temperature and melting temperature of the thermoplastic; (c) drawing the heated web under tension in a substantially longitudinal direction to cause the web to consolidate laterally and thereby reduce the maximum pore size measure of the web by at least 20%, wherein the heating and drawing steps are carried out continuously by passing the precursor web into an oven at a first linear velocity and withdrawing the precursor web from the oven at a second linear velocity, the ratio of the second velocity to first velocity ranges from about 1.1:1 to 2:1; and (d) cooling the web or permitting the web to cool.

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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
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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Post-treatment of nonwoven webs 원문보기

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Post-treatment of nonwoven webs 원문보기

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대표청구항 ▼

연구과제 타임라인

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