WO2001048402A1 - Fil de tricotage à base de graphite expansé - Google Patents
Fil de tricotage à base de graphite expansé Download PDFInfo
- Publication number
- WO2001048402A1 WO2001048402A1 PCT/JP2000/009176 JP0009176W WO0148402A1 WO 2001048402 A1 WO2001048402 A1 WO 2001048402A1 JP 0009176 W JP0009176 W JP 0009176W WO 0148402 A1 WO0148402 A1 WO 0148402A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- expanded graphite
- tape
- knitting yarn
- width direction
- graphite tape
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
- F16J15/20—Packing materials therefor
- F16J15/22—Packing materials therefor shaped as strands, ropes, threads, ribbons, or the like
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/22—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration
- D04B1/225—Elongated tubular articles of small diameter, e.g. coverings or reinforcements for cables or hoses
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
- D04C1/00—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
- D04C1/06—Braid or lace serving particular purposes
- D04C1/12—Cords, lines, or tows
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2101/00—Inorganic fibres
- D10B2101/10—Inorganic fibres based on non-oxides other than metals
- D10B2101/12—Carbon; Pitch
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2101/00—Inorganic fibres
- D10B2101/20—Metallic fibres
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/06—Packings, gaskets, seals
Definitions
- the present invention relates to a ground packing expanded graphite knitting yarn used for a shaft sealing portion of a fluid device or the like.
- the present invention relates to an expanded graphite knitting yarn capable of improving the pressure resistance of ground packing.
- a knitting yarn 1 shown in FIG. 8 has been known as a ground packing knitting yarn used for a shaft seal portion of a fluid device or the like.
- the knitting yarn 1 is obtained by folding an expanded graphite tape 2 having a predetermined width into a valley in the longitudinal direction, and covering the outer periphery thereof with a reinforcing material 3 made of a braided metal wire.
- a bundle of the knitting yarns 1 is bundled and braided to produce a daunt packing.
- the expanded graphite tape 2 has a weak tensile strength and is brittle, and the edges of both ends 2a and 2b in the width direction have resistance to exfoliation between the expanded graphite particles. Small.
- the expanded graphite particles are peeled off at the edges of both ends 2a and 2b in the width direction. For this reason, when a large tensile force or shearing force is applied to the edges of both ends 2a and 2b in the width direction during braiding, cracks are generated from the edges of both ends 2a and 2b in the width direction.
- An object of the present invention is to provide an expanded graphite knitting yarn capable of reducing or preventing exfoliated graphite particles from falling off during braiding and increasing the pressure resistance of the ground packing. It is to provide.
- the expanded graphite knitting yarn according to the present invention is formed on the outer periphery of the bent expanded graphite tape in the expanded graphite knitting yarn used for the ground packing.
- a reinforcing material such as a knitted or braided body is covered and folded so that at least one end in the width direction of the expanded graphite tape faces inward in the width direction of the knitting yarn. It is characterized by being bent.
- the expanded graphite knitting yarn according to the present invention is formed by knitting or knitting the twisted expanded graphite tape on the outer circumference of the expanded graphite knitting yarn used for the ground packing.
- a reinforcing material made of a braid is coated, and at least one end in the width direction of the expanded graphite tape is bent so as to face inward in the width direction of the knitting yarn. It is characterized by and.
- the cutting of a bent or twisted expanded graphite tape caused by a tensile force or a twisting force during braiding is applied to the outer circumference of the tape.
- the reinforcing material covered with the metal is effectively prevented by the reinforcing material covered with the metal.
- at least one end of the expanded graphite tape in the width direction is bent so as to face inward in the width direction, so that at the time of braiding, the edge of the one end is formed.
- no large tensile or shearing force is applied, it is possible to reliably reduce the occurrence of cracks from the edge of the one end and the exfoliation of the expanded graphite particles accompanying the cracks.
- braiding with a larger bow I tension can be performed, and the pressure resistance of the ground packing can be increased.
- the expanded graphite knitting yarn according to the present invention is characterized in that reinforcing fibers are embedded in the expanded graphite tape. According to the present invention, since the reinforcing fibers are embedded in the expanded graphite tape, the tensile strength and the twist strength of the expanded graphite tape can be improved.
- the expanded graphite knitting yarn according to the present invention is characterized in that a part of the expanded graphite particles on the surface side of the expanded graphite tape is removed.
- a part of the high-density and highly-oriented expanded graphite particles on the surface side of the expanded graphite tape where cracks are likely to occur is removed by blasting. Therefore, even if a large tensile force acts on the expanded graphite tape during braiding, it is possible to more reliably reduce the occurrence of cracks and the exfoliation of the expanded graphite particles accompanying the cracks. it can.
- FIG. 1 is a perspective view showing an embodiment of the present invention.
- FIG. 2 is a perspective view showing another embodiment of the present invention.
- FIG. 3A is an enlarged cross-sectional view showing still another embodiment of the present invention.
- FIG. 3B is an enlarged cross-sectional view showing still another embodiment of the present invention.
- FIG. 4 is a perspective view showing still another embodiment of the present invention.
- FIG. 5 is a perspective view showing still another embodiment of the present invention.
- FIG. 6A is a perspective view showing still another embodiment of the present invention.
- FIG. 6B is a perspective view showing still another embodiment of the present invention.
- FIG. 6C is a perspective view showing still another embodiment of the present invention.
- FIG. 6D is a perspective view showing still another embodiment of the present invention.
- FIG. 7A is a perspective view showing still another embodiment of the present invention.
- FIG. 7B is a perspective view showing still another embodiment of the present invention.
- FIG. 7C is a perspective view showing still another embodiment of the present invention.
- FIG. 7D is a perspective view showing still another embodiment of the present invention.
- FIG. 8 is a perspective view showing an example of a conventional expanded graphite knitting yarn.
- FIG. 1 is a perspective view showing an embodiment of an expanded graphite knitting yarn according to the present invention.
- the expanded graphite knitting yarn 1 is formed such that an expanded graphite tape 2 having a predetermined width is bent in a valley fold in a longitudinal direction, and both ends of the expanded graphite tape 2 in a width direction.
- 2a and 2b are bent so as to face inward in the width direction of the expanded graphite tape 2, and the outer periphery thereof is covered with a reinforcing material 3 made of a stainless steel wire braid. I have.
- FIG. 2 is a perspective view showing another embodiment of the expanded graphite knitting yarn according to the present invention.
- the expanded graphite knitting yarn 1 has an expanded graphite tape 2 having a predetermined width bent in a valley fold in a longitudinal direction and a width direction of the expanded graphite tape 2.
- the expanded graphite tape 2 is bent only inward in the width direction of the expanded graphite tape 2, and the outer periphery thereof is covered with a reinforcing member 3 made of a stainless steel wire braid. It is.
- the bending of the expanded graphite tape 2 in the longitudinal direction and the bending of at least one end 2a of the expanded graphite tape 2 inward in the width direction are at least performed during braiding. That's it. Therefore, for example, before the braiding, the expanded graphite tape 2 is bent in a V-shape in advance, and one end 2a is bent lightly inward in the width direction of the expanded graphite tape 2, and Alternatively, the expanded graphite tape 2 and one end 2a thereof may be completely bent.
- the shape of the one end portion 2a to be bent may be a curl shape, a spiral shape, a U shape, or another shape.
- the outer periphery of the expanded graphite tape 2 may be covered with a reinforcing material 3 made of a stainless steel braid.
- a structure in which a part of the reinforcing material 3 is interposed between both ends 2a and 2b in the width direction of the expanded graphite tape 2 may be used.
- the expanded graphite tape 2 is not limited to one sheet, but a plurality of expanded graphite tapes 2 may be stacked, and at least one end 2a of the expanded graphite tape 2 in the width direction may be formed.
- the expanded graphite tape 2 may be bent so as to face inward in the width direction.
- FIG. 4 is a perspective view showing still another embodiment of the knitted graphite yarn according to the present invention.
- the expanded graphite knitting yarn 1 is folded so that both ends 2 a and 2 b of the expanded graphite tape 2 having a predetermined width in the width direction are directed inward in the width direction of the expanded graphite tape 2. It is bent and twisted, and its outer periphery is covered with a reinforcing material 3 made of a stainless steel wire braid.
- FIG. 5 is a perspective view showing still another embodiment of the expanded graphite knitting yarn according to the present invention.
- the expanded graphite knitting yarn 1 is bent so that only one end 2a in the width direction of the expanded graphite tape 2 having a predetermined width is directed inward in the width direction of the expanded graphite tape 2. And a twisting process, and the outer periphery thereof is covered with a reinforcing material 3 made of a stainless steel wire braid.
- the bending of at least one end 2a of the expanded graphite tape 2 inward in the width direction may be at least performed at the time of braiding. Therefore, for example, before the twisting process or at the time of the twisting process, the one end portion 2a is previously set in the width direction of the expanded graphite tape 2.
- the end 2a may be completely bent at the time of braiding after being bent inward slightly.
- the shape of the one end portion 2a to be bent may be a curl shape, a spiral shape, a U-shape, or another shape.
- the expanded graphite tape 2 is not limited to one sheet, but a plurality of expanded graphite tapes 2 may be stacked, and at least one end 2a of the expanded graphite tape 2 in the width direction may be formed. It may be twisted so as to face the widthwise inward of the expanded graphite tape 2.
- metal wires such as iconone and monenole, cotton, rayon, phenol, etc.
- Organic fibers such as metal, aramid, PBO, PBI, PTFE, PPS and PEEK, and inorganic fibers such as carbon fiber and ceramic fiber can be used.
- the knitting of the reinforcing material 3 may be knitting.
- FIGS. 6A to 6D are perspective views showing still another embodiment of the expanded graphite knitting yarn according to the present invention.
- the difference from the embodiment described with reference to FIGS. 1 to 5 is that a plurality of reinforcing fibers 4 are buried in the expanded graphite tape 2 in the longitudinal direction at intervals in the width direction. That is the point.
- the reinforcing fiber 4 at least one selected from organic fibers such as cotton, rayon, phenol, aramid, PBO, PBI, PTFE, PPS, and PEEK.
- organic fibers such as cotton, rayon, phenol, aramid, PBO, PBI, PTFE, PPS, and PEEK.
- inorganic fibers such as glass fiber, carbon fiber, ceramic fiber, or metal wire such as stainless steel, inconel, or monenole. The one selected from the force is used.
- the organic fiber, inorganic Fiber and metal wire can be used properly.
- FIG. 7A to FIG. 7D are perspective views showing still another embodiment of the expanded graphite knitting yarn according to the present invention.
- the point different from the embodiment described with reference to FIGS. 1 to 5 is that a part of the high-density and highly-oriented expanded graphite particles on the surface side of the expanded graphite tape 2 is different. Is that it has been removed by blasting.
- the high-density, highly-oriented expanded graphite particles on the surface side of the expanded graphite tape 2 are removed by a micro-blasting process using particles having a smaller diameter than the particles. That is, specifically, for example, due to a position force of 150 mm away from the outer surface of the expanded graphite tape 2 or an air pressure of 2 kg Z cm 2 , fine particles of SiC or the like are generated.
- FIGS. 7A to 7D are examples in which the blast processing is applied to the embodiment described in FIGS. To FIG. 5 to FIG. 5.
- FIGS. 6A to 6D The blast processing may be applied to the embodiment.
- one end of the expanded graphite tape It is possible to reduce or prevent the exfoliated graphite particles from exfoliating from the edge of the part.
- the tensile strength and twist strength of the expanded graphite tape are improved, and the knitting yarn can be braided with a larger tensile force.
- exfoliation of the expanded graphite particles can be reduced or prevented more reliably.
- the tensile force of the knitting yarns is not limited to a small value.
- the knitting yarn can be braided with a high tensile force, and the pressure resistance of the ground packing can be increased.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Sealing Devices (AREA)
- Braiding, Manufacturing Of Bobbin-Net Or Lace, And Manufacturing Of Nets By Knotting (AREA)
- Knitting Of Fabric (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2001-7010652A KR100448586B1 (ko) | 1999-12-27 | 2000-12-25 | 팽창흑연제 편사 |
US09/926,017 US6644007B2 (en) | 1999-12-27 | 2000-12-25 | Braiding yarn made of expanded graphite |
DE60038018T DE60038018T2 (de) | 1999-12-27 | 2000-12-25 | Strickgarn aus expandiertem graphit |
EP00987725A EP1179698B1 (en) | 1999-12-27 | 2000-12-25 | Expanded graphite-made knitting yarn |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP36991099A JP2001182841A (ja) | 1999-12-27 | 1999-12-27 | 膨張黒鉛製編み糸 |
JP11-369910 | 1999-12-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001048402A1 true WO2001048402A1 (fr) | 2001-07-05 |
Family
ID=18495618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2000/009176 WO2001048402A1 (fr) | 1999-12-27 | 2000-12-25 | Fil de tricotage à base de graphite expansé |
Country Status (7)
Country | Link |
---|---|
US (1) | US6644007B2 (ja) |
EP (1) | EP1179698B1 (ja) |
JP (1) | JP2001182841A (ja) |
KR (1) | KR100448586B1 (ja) |
DE (1) | DE60038018T2 (ja) |
TW (1) | TW457345B (ja) |
WO (1) | WO2001048402A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004025151A1 (ja) * | 2002-09-11 | 2004-03-25 | Nippon Pillar Packing Co., Ltd. | グランドパッキン材料およびグランドパッキン |
WO2004025150A1 (ja) * | 2002-09-11 | 2004-03-25 | Nippon Pillar Packing Co., Ltd. | グランドパッキン材料およびグランドパッキン |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001182839A (ja) * | 1999-12-27 | 2001-07-06 | Nippon Pillar Packing Co Ltd | グランドパッキン |
KR20030017196A (ko) * | 2001-08-24 | 2003-03-03 | 홍영기 | 보강면이 형성된 팽창흑연 및 그 제조방법 |
EP1541909B1 (en) * | 2002-09-11 | 2007-08-08 | Nippon Pillar Packing Co., Ltd. | Material for gland packing and the gland packing |
KR101231667B1 (ko) * | 2004-03-02 | 2013-02-08 | 텍스틸마 에이지 | 로프형 구조물 |
TW200535356A (en) * | 2004-03-31 | 2005-11-01 | Nippon Pillar Packing | Expanding graphite yarn, and gland packing |
US7296394B2 (en) | 2005-02-11 | 2007-11-20 | Gore Enterprise Holdings, Inc. | Fluoropolymer fiber composite bundle |
US9334587B2 (en) * | 2005-02-11 | 2016-05-10 | W. L. Gore & Associates, Inc. | Fluoropolymer fiber composite bundle |
US20060182962A1 (en) * | 2005-02-11 | 2006-08-17 | Bucher Richard A | Fluoropolymer fiber composite bundle |
US20110129657A1 (en) * | 2005-02-11 | 2011-06-02 | Norman Clough | Ballistic Resistant Composite Fabric |
US20060207414A1 (en) * | 2005-03-16 | 2006-09-21 | Nye Richard E | Rope |
JP4340647B2 (ja) * | 2005-11-16 | 2009-10-07 | 日本ピラー工業株式会社 | ヤーン及びグランドパッキン |
US9347488B2 (en) | 2012-03-23 | 2016-05-24 | Seal-Ryt Corporation | Seal-bearing assembly |
US8814432B2 (en) | 2012-03-23 | 2014-08-26 | Seal-Ryt Corporation | Seal-bearing assembly |
US8939646B2 (en) | 2013-04-12 | 2015-01-27 | Ward Forrest | Shaft support and lubrication assembly |
KR102428011B1 (ko) | 2014-04-28 | 2022-08-03 | 해치 리미티드 | 전기로 전극을 위한 슬리브 시일 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06279752A (ja) * | 1993-03-26 | 1994-10-04 | Nippon Pillar Packing Co Ltd | パッキン材料 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0388481B1 (en) * | 1989-03-20 | 1995-03-15 | Zhejiang Ci Xi Seal Material Factory | General packing of expanded graphite and its packing material |
US5225262A (en) * | 1991-04-29 | 1993-07-06 | A. W. Chesterton Co. | Braided high-temperature packing comprising a core of folded flexible graphite sheet |
US5549306A (en) * | 1993-01-21 | 1996-08-27 | Nippon Pillar Packing Co., Ltd. | Knitting yarn for gland packing and gland packing made of said knitting yarn |
GB2285067B (en) * | 1993-12-22 | 1997-06-04 | T & N Technology Ltd | Gland packing yarn |
US6027809A (en) * | 1996-07-05 | 2000-02-22 | Nippon Pillar Packing Co., Ltd. | Sealing material made of expanded graphite and a method of producing the same |
JP4164210B2 (ja) * | 1999-11-08 | 2008-10-15 | 日本ピラー工業株式会社 | 膨張黒鉛製編み糸およびグランドパッキン |
JP4527261B2 (ja) * | 2000-10-19 | 2010-08-18 | ジャパンマテックス株式会社 | 膨張黒鉛からなるパッキン材料およびこの材料からなる膨張黒鉛製グランドパッキン並びにその膨張黒鉛製グランドパッキンの製造方法 |
-
1999
- 1999-12-27 JP JP36991099A patent/JP2001182841A/ja active Pending
-
2000
- 2000-12-25 US US09/926,017 patent/US6644007B2/en not_active Expired - Lifetime
- 2000-12-25 WO PCT/JP2000/009176 patent/WO2001048402A1/ja active IP Right Grant
- 2000-12-25 DE DE60038018T patent/DE60038018T2/de not_active Expired - Lifetime
- 2000-12-25 EP EP00987725A patent/EP1179698B1/en not_active Expired - Lifetime
- 2000-12-25 KR KR10-2001-7010652A patent/KR100448586B1/ko not_active IP Right Cessation
- 2000-12-26 TW TW089127889A patent/TW457345B/zh not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06279752A (ja) * | 1993-03-26 | 1994-10-04 | Nippon Pillar Packing Co Ltd | パッキン材料 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004025151A1 (ja) * | 2002-09-11 | 2004-03-25 | Nippon Pillar Packing Co., Ltd. | グランドパッキン材料およびグランドパッキン |
WO2004025150A1 (ja) * | 2002-09-11 | 2004-03-25 | Nippon Pillar Packing Co., Ltd. | グランドパッキン材料およびグランドパッキン |
Also Published As
Publication number | Publication date |
---|---|
DE60038018D1 (de) | 2008-03-27 |
EP1179698A4 (en) | 2005-08-03 |
US20030070413A1 (en) | 2003-04-17 |
KR100448586B1 (ko) | 2004-09-13 |
KR20010104712A (ko) | 2001-11-26 |
TW457345B (en) | 2001-10-01 |
EP1179698B1 (en) | 2008-02-13 |
EP1179698A1 (en) | 2002-02-13 |
DE60038018T2 (de) | 2009-02-12 |
US6644007B2 (en) | 2003-11-11 |
JP2001182841A (ja) | 2001-07-06 |
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