IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0381438
(2002-07-30)
|
우선권정보 |
JP-2001-232737(2001-07-31); JP-2002-134563(2002-05-09) |
국제출원번호 |
PCT/JP02/007756
(2002-07-30)
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§371/§102 date |
20030718
(20030718)
|
국제공개번호 |
WO03/016627
(2003-02-27)
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발명자
/ 주소 |
- Kimbara,Hiromichi
- Sagara,Koichi
- Osaki,Masayuki
- Tsuura,Tokuo
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출원인 / 주소 |
|
대리인 / 주소 |
Oblon, Spivak, McClelland, Maier &
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인용정보 |
피인용 횟수 :
4 인용 특허 :
0 |
초록
▼
Disclosed is a method of producing a fiber-molded hollow article by using a papermaking mold (2) composed of splits (21, 22) which are joined to form a cavity (20) having two openings (20a, 20b) connecting with the outside and an expandable pressing member (3) adapted to be placed in the cavity (20)
Disclosed is a method of producing a fiber-molded hollow article by using a papermaking mold (2) composed of splits (21, 22) which are joined to form a cavity (20) having two openings (20a, 20b) connecting with the outside and an expandable pressing member (3) adapted to be placed in the cavity (20). The method comprises the steps of immersing each of the splits (21, 22) before being joined in a fiber slurry to form a fiber preform (10a, 10b), joining the splits (21, 22) each having the fiber preform (10a, 10b) formed thereon while placing the pressing member (3 ) in the cavity (20), and molding and dewatering a molded article (1) in the papermaking mold (2).
대표청구항
▼
What is claimed is: 1. A method of producing a fiber-molded hollow article by using a papermaking mold composed of a set of splits which are joined to form a cavity having two or more openings connecting with the outside and an expandable pressing member adapted to be placed in the cavity, which co
What is claimed is: 1. A method of producing a fiber-molded hollow article by using a papermaking mold composed of a set of splits which are joined to form a cavity having two or more openings connecting with the outside and an expandable pressing member adapted to be placed in the cavity, which comprises: a first step of immersing each of the splits before being joined in a fiber slurry to form a fiber preform on the cavity-forming surface of the split, a second step of joining the splits each having said fiber preform formed thereon and placing said pressing member in the cavity, a third step of depositing a fiber layer on said fiber perform, and a fourth step of dewatering said fiber preforms in the papermaking mold to form a fiber-molded hollow article. 2. The method of producing a fiber-molded hollow article according to claim 1, wherein said pressing member is expanded in the cavity to press said fiber preforms toward the inner wall of the papermaking mold thereby to dewater and mold said fiber preforms. 3. The method of producing a fiber-molded hollow article according to claim 1, wherein the second step is carried out in the fiber slurry used in the first step. 4. The method of producing a fiber-molded hollow article according to claim 1, wherein said splits each have a large number of fluid flow passageways open on the cavity-forming surface thereof, a liquid permeable material is disposed to cover the cavity-forming surface, and the fiber slurry is sucked up through said flow passageways to deposit said fiber preform on said liquid permeable material. 5. The method of producing a fiber-molded hollow article according to claim 1, wherein said pressing member is placed on said part of the splits each having formed said fiber preform on the surface thereof while said part of the splits are right under the liquid level of the fiber slurry. 6. The method of producing a fiber-molded hollow article according to claim 1, wherein a weight is disposed in said pressing member. 7. The method of producing a fiber-molded hollow article according to claim 1, wherein the fiber-molded hollow article having been dewatered and molded by the pressing member and as containing said pressing member therein is released from the papermaking mold and disposed in a drying mold, and said pressing member is expanded to dry said fiber-molded hollow article. 8. A method of producing a fiber-molded hollow article comprising the steps of: immersing part of a set of splits of a mold in a fiber slurry to form fiber preform(s) on the surface of the part of splits, placing a pressing member on said fiber preform(s), immersing the remaining part of the set of splits in the fiber slurry to form fiber preform(s) on the surface of the remaining part of the splits, and joining the set of splits each having said fiber preform formed thereon while being immersed in the fiber slurry to unite said fiber preforms into one body. 9. The method of producing a fiber-molded hollow article according to claim 8, wherein a fluid is fed into said pressing member in the papermaking mold formed by the joined set of the splits to expand said pressing member thereby to dewater a fiber molded article formed by uniting said fiber preforms. 10. The method of producing a fiber-molded hollow article according to claim 8, wherein said pressing member is placed on said part of the splits each having formed said fiber preform on the surface thereof while said part of the splits are right under the liquid level of the fiber slurry. 11. The method of producing a fiber-molded hollow article according to claim 8, wherein the step of joining the set of splits having the respective fiber preforms thereon is followed by the step of depositing a fiber layer on the surface of each of said fiber preforms. 12. The method of producing a fiber-molded hollow article according to claim 8, wherein a weight is disposed in said pressing member. 13. The method of producing a fiber-molded hollow article according to claim 8, wherein the fiber-molded hollow article having been dewatered and molded by the pressing member and as containing said pressing member therein is released from the papermaking mold and disposed in a drying mold, and said pressing member is expanded to dry said fiber-molded hollow article. 14. An apparatus for producing a fiber-molded hollow article comprising a papermaking mold composed of a set of splits which are adapted to be joined to form a cavity and a pressing member which is adapted to dewater fiber preforms each formed on each of the splits to form a fiber-molded hollow article, wherein said papermaking mold has two or more openings connecting with the outside, said pressing member is expandable and bendable so as to be placed in said cavity between at least two of said openings after said splits are joined, and said papermaking mold is configured such that a first of said two or more openings cannot be seen from a second of said two or more openings due to at least one bend in the papermaking mold. 15. The apparatus for producing a fiber-molded hollow article according to claim 14, which has a mold opening and closure mechanism for opening and closing said papermaking mold in a fiber slurry and a pressing member placement mechanism for placing said pressing member in one or both of said splits. 16. The apparatus for producing a fiber-molded hollow article according to claim 14, which has a drying mold for drying said fiber-molded hollow article and a transfer means for transferring the dewatered fiber-molded hollow article as having said pressing member therein to said drying mold. 17. A method of producing a fiber-molded hollow article comprising the steps of: immersing part of a set of splits of a mold in a fiber slurry to form at least one fiber preform on the surface of the part of splits, placing a pressing member on said at least one fiber preform, immersing the remaining part of the set of splits in the fiber slurry to form at least one fiber preform on the surface of the remaining part of the splits, joining the set of splits each having said at least one fiber preform formed thereon while being immersed in the fiber slurry to unite said at least one fiber preform into one body, and forming a fiber layer on said at least one fiber preform. 18. The method of producing a fiber-molded hollow article according to claim 17, wherein a fluid is fed into said pressing member in the papermaking mold formed by the joined set of the splits to expand said pressing member thereby to dewater a fiber molded article formed by uniting said at least one fiber preform.
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