[특허]Method of making polyimide fiber assembly

Method of making polyimide fiber assembly 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-039/16 D04H-003/03 D01D-005/04 D01D-005/12 D01F-006/74 D04H-001/42 D04H-003/033 D01D-005/14 D01D-005/23 D04H-001/4326
출원번호	US-0739279 (2008-10-20)
등록번호	US-9617669 (2017-04-11)
우선권정보	JP-2007-279368 (2007-10-26)
국제출원번호	PCT/JP2008/068977 (2008-10-20)
§371/§102 date	20100422 (20100422)
국제공개번호	WO2009/054349 (2009-04-30)
발명자 / 주소	Fujihara, Kan
출원인 / 주소	KANEKA CORPORATION
대리인 / 주소	Nixon & Vanderhye, P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 16

초록 ▼

A polyimide fiber assembly of the present invention includes polyimide fibers having curved shapes with an average fiber diameter falling within a range of greater than 1 μm to not greater than 100 μm, the polyimide fiber assembly having a bulk density falling within a range of not less than 1 kg/m3 to not greater than 30 kg/m3. This makes it possible to realize a polyimide fiber assembly that is both excellent in thermal insulation performance and sound absorbency and light in weight. The polyimide fiber assembly of the present invention can be obtained by a production method comprising the steps of: (i) discharging a polymeric resin solution obtained by dissolving polyamic acid or polyimide in an organic solvent; and (ii) using external force to cause the polymeric resin solution thus discharged to fly in a direction of the external force, the external force being external force of gas from a direction intersecting with a discharge direction in which the polymeric resin solution is discharged, and then forming a polymeric resin into fibers by spinning while vaporizing the organic solvent contained in the polymeric resin solution.

대표청구항 ▼

1. A method of making a polyimide fiber assembly comprising polyimide fibers comprising curved shapes with an average fiber diameter falling within a range of greater than 1 μm to not greater than 100 μm, said polyimide fiber assembly comprising a bulk density falling within a range of not less than 1 kg/m3 to not greater than 30 kg/m3, comprising the steps of: (i) discharging, through an orifice of a spinneret, a polymeric resin solution obtained by dissolving polyamic acid or polyimide in an organic solvent; and(ii) blowing gas onto the polymeric resin solution, which has been discharged through the orifice, from only one air nozzle from a single direction with respect to a direction of discharge of the polymeric resin solution so that the gas intersects with a flow of the polymeric resin solution, and using external force to cause the polymeric resin solution thus discharged through the orifice of a spinneret, to fly in a direction of the external force, the external force being external force of gas from a direction intersecting with a discharge direction in which the polymeric resin solution is discharged, and then forming a polymeric resin into fibers by spinning while vaporizing the organic solvent contained in the polymeric resin solution,the air nozzle and the orifice being provided separately without contacting each other,an angle between the discharge direction in which the polymeric resin solution is discharged and the direction of the gas from the air nozzle falling within a range of not less than 30 degrees to not greater than 150 degrees,a flow velocity of the gas that is discharged from the air nozzle is within a range of not less than 10 m/sec to not greater than 300 m/sec. 2. The method as set forth in claim 1, wherein the angle falls within a range of not less than 93 degrees to not greater than 150 degrees.

이 특허에 인용된 특허 (16)

Gerking Lder (Berlin DEX) Weger Friedrich (Berlin DEX), Apparatus for delivering and depositing continuous filaments by means of aerodynamic forces.
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Toshio Tanaka JP; Hiroki Yamaguchi JP; Naohiko Takimoto JP; Masahiro Yamashita JP; Shiro Hamamoto JP, Battery separator, process for producing the same, and alkaline battery.
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Weinrotter Klaus (Vocklabruck ATX) Vodiunig Robert (Vocklabruck ATX), Flame retardant high-temperature-resistant polyimide fibers and molded articles manufactured therefrom.
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Weinrotter Klaus (Vocklabruck ATX) Vodiunig Robert (Vocklabruck ATX), Flame retardant high-temperature-resistant polyimide fibers and molded articles manufactured therefrom.
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Schobesberger Claus (Vcklabruck ATX) Weinrotter Klaus (Vcklabruck ATX) Griesser Herbert (Vcklabruck ATX) Seidl Sigrid (Seewalchen ATX), Flame-retardant, high temperature resistant polyimide fibers and process for producing the same.
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Tasaki Youji (Aichi JPX) Sasaki Nobuyoshi (Aichi JPX), Gas generating device.
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Campbell Frederick S. (West Mansfield MA) Varney Gordon J. (North Easton MA) Petterson DeWitt R. (Dover MA), Heat shrinkable fibres and products therefrom.
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David F. Erb, Jr., High performance insulations.
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Takahashi Akio (Hitachioota JPX) Itoh Yutaka (Hitachi JPX) Shimazaki Takeshi (Hitachi JPX) Wajima Motoyo (Hitachi JPX) Morishita Hirosada (Hitachi JPX) Mizuno Yutaka (Shimodate JPX) Yokozawa Shunya (, Imide prepolymer from reaction of epoxy compound with bis-imide/diamine reaction mixture.
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Luo, Mengkui; Roscelli, Vincent A.; Camarena, Senen; Neogi, Amar N.; Yancey, Michael J.; Gaddis, Paul G., Lyocell fibers having high hemicellulose content.
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Levecque Marcel (Birchrunville PA) Battigelli Jean A. (Rantigny FRX) Plantard Dominique (Rantigny FRX), Method and apparatus for making fibers from thermoplastic materials.
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Milligan Mancil W. (Knoxville TN) Buntin Robert R. (Baytown TX) Lu Fumin (Knoxville TN), Method and apparatus for treating meltblown filaments.
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Erb, Jr., David F., Methods of manufacturing high performance insulations.
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Weinrotter Klaus (Vcklabruck ATX) Jeszenszky Thomas (Kammer ATX) Schmidt Heinrich (Vcklabruck ATX) Baumann Siegfried (Timelkam ATX) Kalleitner Johann (Schrfling ATX), Non-flammable, high-temperature resistant polyimide fibers made by a dry spinning method.
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Haynes Bryan David ; Kastner Kevin James ; Lau Jark Chong ; Marmon Samuel Edward ; Morell Charles John ; Primm Stephen Harding ; Triebes Thomas Gregory, Nonwoven process and apparatus.
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Reneker, Darrell H., Process and apparatus for the production of nanofibers.
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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

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Method of making polyimide fiber assembly 원문보기

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Method of making polyimide fiber assembly 원문보기

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