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WO2009041433A1 - Polytetrafluoroethylene bellows, process for manufacturing the same, apparatus therefor and fluid pressure feed equipment utilizing the bellows - Google Patents

Polytetrafluoroethylene bellows, process for manufacturing the same, apparatus therefor and fluid pressure feed equipment utilizing the bellows Download PDF

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Publication number
WO2009041433A1
WO2009041433A1 PCT/JP2008/067186 JP2008067186W WO2009041433A1 WO 2009041433 A1 WO2009041433 A1 WO 2009041433A1 JP 2008067186 W JP2008067186 W JP 2008067186W WO 2009041433 A1 WO2009041433 A1 WO 2009041433A1
Authority
WO
WIPO (PCT)
Prior art keywords
bellows
outer piece
polytetrafluoroethylene
piece dies
core
Prior art date
Application number
PCT/JP2008/067186
Other languages
French (fr)
Japanese (ja)
Inventor
Hiroaki Satoh
Original Assignee
Iwaki Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Iwaki Co., Ltd. filed Critical Iwaki Co., Ltd.
Publication of WO2009041433A1 publication Critical patent/WO2009041433A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/50—Removing moulded articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C43/52—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
    • B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
    • B29C2043/023—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface having a plurality of grooves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/32—Component parts, details or accessories; Auxiliary operations
    • B29C2043/3205—Particular pressure exerting means for making definite articles
    • B29C2043/3222—Particular pressure exerting means for making definite articles pressurized gas, e.g. air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • B29K2027/18—PTFE, i.e. polytetrafluorethene, e.g. ePTFE, i.e. expanded polytetrafluorethene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/703—Bellows

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Diaphragms And Bellows (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)

Abstract

A bellows having at least its internal surface consisting of a mirror surface polytetrafluoroethylene, obtained by melting-pressure molding into a bellows form. In particular, the bellows is obtained by inserting a core in the inside of either a cylindrical or beaker-shaped preform of polytetrafluoroethylene, or a cutting wrought or blow molded polytetrafluoroethylene bellows; carrying out fusion pressure bonding with the use of, for example, a special metal mold; and drawing out the core, optionally followed by welding. The special metal mold consists of multiple movable outer piece dies and the same number of back-push outer piece dies. The movable outer piece dies and back-push outer piece dies are alternately disposed, and while sliding, narrow the circle made thereby to thereby accomplish fusion pressure bonding of molding. Thereafter, the movable outer piece dies and back-push outer piece dies are detached to thereby expand the molding. Simultaneously, mechanical force is applied to thereby expand a flange portion. The core is taken out, optionally followed by welding. Thus, a bellows can be obtained.
PCT/JP2008/067186 2007-09-26 2008-09-24 Polytetrafluoroethylene bellows, process for manufacturing the same, apparatus therefor and fluid pressure feed equipment utilizing the bellows WO2009041433A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007275712 2007-09-26
JP2007-275712 2007-09-26

Publications (1)

Publication Number Publication Date
WO2009041433A1 true WO2009041433A1 (en) 2009-04-02

Family

ID=40511316

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/067186 WO2009041433A1 (en) 2007-09-26 2008-09-24 Polytetrafluoroethylene bellows, process for manufacturing the same, apparatus therefor and fluid pressure feed equipment utilizing the bellows

Country Status (3)

Country Link
JP (2) JP5574141B2 (en)
TW (1) TW200932472A (en)
WO (1) WO2009041433A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115008664A (en) * 2022-06-06 2022-09-06 江苏客慕体育用品有限公司 Pu barbell processing device and processing method thereof

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5530770B2 (en) * 2010-03-18 2014-06-25 淀川ヒューテック株式会社 High durability bellows and manufacturing method thereof
KR102019449B1 (en) * 2018-04-17 2019-09-06 김송산 Bellows forming equipment
CN111136847A (en) * 2020-01-14 2020-05-12 安徽理工大学 A kind of edge expansion device of automatic plastic cap and control method thereof
US11780122B2 (en) * 2020-04-20 2023-10-10 Westinghouse Electric Company Llc Internal hydroforming method for manufacturing heat pipe wicks
TWI741801B (en) * 2020-09-18 2021-10-01 國立中山大學 Die for forming irregular bellow
KR102714188B1 (en) * 2023-06-21 2024-10-07 후성정공 주식회사 Method of manufacturing bellows by injection molding of PFA resin

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5290664U (en) * 1975-12-27 1977-07-06
JPH1135709A (en) * 1997-07-16 1999-02-09 Daikin Ind Ltd Method for smoothing fired polytetrafluoroethylene sheet
JP3177983B2 (en) * 1992-02-05 2001-06-18 ダイキン工業株式会社 Polytetrafluoroethylene molding powder
JP2003251686A (en) * 2001-12-25 2003-09-09 Toshikawa Plastic:Kk Apparatus and method for forming annular body
WO2005088129A1 (en) * 2004-03-15 2005-09-22 Koganei Corporation Liquid chemical supplying machine
WO2006059642A1 (en) * 2004-11-30 2006-06-08 Daikin Industries, Ltd. Modified polytetrafluoroethylene molded article and process for manufacture thereof

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JPS6339491Y2 (en) * 1981-01-07 1988-10-17
JPS59152186U (en) * 1983-03-30 1984-10-12 住友電気工業株式会社 vertical pump
JPS61254327A (en) * 1985-05-07 1986-11-12 Asahi Chem Ind Co Ltd Multi-axially oriented product of polytetrafluoroethylene
JPH0315406U (en) * 1989-06-28 1991-02-15
JPH0737907B2 (en) * 1990-12-20 1995-04-26 山武ハネウエル株式会社 In-pipe lining molding method and its equipment
JP2589583Y2 (en) * 1992-07-14 1999-01-27 東洋ゴム工業株式会社 Flexible boots
JPH09177971A (en) * 1995-12-27 1997-07-11 Toyoda Gosei Co Ltd Boot for universal joint made of resin
JPH1073162A (en) * 1996-08-29 1998-03-17 Suzuki Motor Corp Boots and its molding/extracting method
DE59904453D1 (en) * 1998-04-11 2003-04-10 Tuchenhagen Gmbh LIFT VALVE
JP2001193836A (en) * 2000-01-11 2001-07-17 Nippon Pillar Packing Co Ltd Bellows and fluid equipment using the bellows
JP3879399B2 (en) * 2000-12-21 2007-02-14 旭硝子株式会社 Method for producing paraffin wax for aqueous dispersion polymerization of tetrafluoroethylene and method for producing tetrafluoroethylene polymer using the same
JP2002250442A (en) * 2001-02-23 2002-09-06 Yokohama Rubber Co Ltd:The Joint boot
JP2003171080A (en) * 2001-12-04 2003-06-17 Myotoku Ltd Sucking pad and manufacturing method thereof
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JP2004018816A (en) * 2002-06-20 2004-01-22 Hitachi Cable Ltd Paint for forming water-repellent coating

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5290664U (en) * 1975-12-27 1977-07-06
JP3177983B2 (en) * 1992-02-05 2001-06-18 ダイキン工業株式会社 Polytetrafluoroethylene molding powder
JPH1135709A (en) * 1997-07-16 1999-02-09 Daikin Ind Ltd Method for smoothing fired polytetrafluoroethylene sheet
JP2003251686A (en) * 2001-12-25 2003-09-09 Toshikawa Plastic:Kk Apparatus and method for forming annular body
WO2005088129A1 (en) * 2004-03-15 2005-09-22 Koganei Corporation Liquid chemical supplying machine
WO2006059642A1 (en) * 2004-11-30 2006-06-08 Daikin Industries, Ltd. Modified polytetrafluoroethylene molded article and process for manufacture thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115008664A (en) * 2022-06-06 2022-09-06 江苏客慕体育用品有限公司 Pu barbell processing device and processing method thereof

Also Published As

Publication number Publication date
JP2009097725A (en) 2009-05-07
JP2014196832A (en) 2014-10-16
JP5574141B2 (en) 2014-08-20
TW200932472A (en) 2009-08-01

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