WO2007091685A1 - ガスケットおよびその製造方法 - Google Patents
ガスケットおよびその製造方法 Download PDFInfo
- Publication number
- WO2007091685A1 WO2007091685A1 PCT/JP2007/052399 JP2007052399W WO2007091685A1 WO 2007091685 A1 WO2007091685 A1 WO 2007091685A1 JP 2007052399 W JP2007052399 W JP 2007052399W WO 2007091685 A1 WO2007091685 A1 WO 2007091685A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- curable resin
- curing
- semi
- gasket
- active energy
- 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
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/14—Sealings between relatively-stationary surfaces by means of granular or plastic material, or fluid
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
Definitions
- the present invention relates to a method for manufacturing a gasket, and more specifically, a gasket capable of manufacturing a tall gasket without requiring a sheet punching or bonding process without using a mold, and the gasket. It relates to a manufacturing method.
- HDD gaskets for hard disk devices
- a method of forming a desired cross-sectional shape with a mold (see Patent Document 1), a method of sticking a punched piece of a urethane foam sheet or a solid rubber sheet sheet to a cover plate, a solid rubber on both sides of the plate by transfer molding or injection molding
- the plastic elastomer was manufactured by a method such as injection molding on a plate surface and integration (see Patent Document 2).
- the dispensing method is a method in which a die having a long lead time to manufacture and an initial cost is unnecessary, and the gasket shape is directly written on the cover plate. Therefore, there is an advantage that a process such as an attaching process is unnecessary.
- HDD gaskets have already been applied to the manufacture of gaskets for large equipment such as 3.5 inch (88.9mm) HDDs. The majority of 3.5-inch HDD gaskets are manufactured using this method.
- 2.5-inch (63.5 mm) HDDs are becoming mainstream, and 1.8-inch (45.7 mm) and 1-inch (25.4 mm).
- Small HDDs have also been commercialized. HDD gaskets used for these small HDDs require wall-like gaskets with a narrower line width and higher height.
- Patent Document 1 Publication No. 2003-247644
- Patent Document 1 2001-302874
- the liquid curable resin extruded from the dispenser force is formed into a gasket shape by a single stroke, so the cross-sectional shape of the gasket is semicircular due to the weight of the liquid curable resin. The shape will be crushed.
- the present invention provides a gasket manufacturing method capable of forming a gasket having a narrow line width and a high height on the surface of a member to be formed such as a cover body under such circumstances. It is the purpose.
- the method for manufacturing a gasket according to the first aspect of the present invention includes a first discharge step of discharging a liquid curable resin onto a surface of a member to be formed, and the above-described discharge discharged in the first discharge step.
- a semi-curing step for semi-curing curable resin a second discharging step for discharging the liquid curable resin on the curable resin semi-cured by the semi-curing step, and the first And a complete curing step of completely curing the curable resin discharged in the discharging step and the curable resin discharged in the second discharging step.
- the liquid hard The curable resin is discharged onto the surface of the member to be formed, and then the curable resin discharged in the first discharge process is semi-cured in the semi-curing process.
- liquid curable resin is discharged on the curable resin semi-cured in the semi-curing step, and in the complete curing step, the liquid is discharged in the first discharge step.
- the cured curable resin (semi-cured) and the curable resin discharged in the second discharge step (uncured) are completely cured.
- the curable resin discharged in the first discharging process is semi-cured in the semi-curing process, even if the curable resin is discharged on the top to raise the height, the lower semi-cured resin
- the cured curable resin can maintain the shape after discharge without being crushed by weight, and a high dimensional accuracy gasket with a narrow line width and high height can be obtained on the surface of a member such as a cover body.
- the curable resin is cured by irradiation with active energy rays, and the irradiation intensity of the active energy rays in the semi-curing step is the same as that in the complete hardening step. It may be set smaller than the irradiation intensity of active energy rays!
- semi-curing can also be defined as the cured state obtained when the irradiation intensity of 1Z20 to 1Z5 is applied to the irradiation intensity at which complete curing is performed.
- Irradiation intensity strength of active energy rays in the semi-curing process If the irradiation intensity of the active energy lines in the complete curing process is equal to or greater than the irradiation intensity of the curable resin discharged in the first discharge process, The degree of cure of the curable resin discharged in the second discharge process is greatly different (the degree of cure of the curable resin discharged in the first discharge process is the same as that of the second discharge process). Harder than the degree of curing of the resin), when the gasket is compressed, etc., the curable resin discharged in the first discharge process (cured) and the curability discharged in the second discharge process There is a risk of peeling and the like at the boundary between the fat and resin (cured).
- the irradiation intensity of the active energy line in the semi-curing process is set lower than the irradiation intensity of the active energy beam in the complete curing process.
- the difference between the curing degree of the curable resin discharged in the first discharging process and the curing degree of the curable resin discharged in the second discharging process is calculated. It can be made small, and the occurrence of the above-mentioned peeling can be suppressed.
- the irradiation intensity of the active energy line in the semi-curing step is set to 1Z20 to 1Z5 which is the irradiation intensity of the active energy ray in the complete curing step. It may be set within the range.
- the curable resin discharged in the first discharging process Peeling can be further suppressed at the boundary between the oil (cured) and the curable resin (cured) discharged in the second discharge step.
- the discharging process for discharging the liquid curable resin and the curing process for curing the discharged curable resin are alternately performed.
- the curing process is performed so that all the curable resin is completely cured in the final curing process!
- the curable resin is semi-cured.
- the liquid curable resin is discharged, for example, on the surface of the member to be formed in the first discharge process, and the hardening process of the discharged curable resin is performed in the hardening process. Is done.
- liquid curable resin is discharged so as to be stacked on the semi-cured curable resin, and in the curing step, the stacked curable resin is cured. .
- a curable resin is stacked. The height becomes higher.
- the curing process is performed so that all the curable resin is completely cured.
- the lower curable resin at the time of stacking is semi-cured in the curing process before the final curing process.
- the lower semi-cured curable resin can maintain the shape after discharge without being crushed by weight. Therefore, according to the gasket manufacturing method of the second aspect, the gasket is obtained on the surface of a member to be formed such as a cover body with a narrow line width, high height and good dimensional accuracy.
- FIG. 1 is a plan view of a cover body on which a gasket is formed.
- FIG. 2A is a cross-sectional view of a cover body on which a first layer is formed.
- FIG. 2B is a cross-sectional view of the cover body on which the second layer is formed (cross-sectional view taken along line 2B-2B in FIG. 1).
- FIG. 1 shows a cover body 12 in which the gasket 10 is integrated.
- This gasket 10 is obtained by linearly discharging a liquid curable resin on the surface of the cover body 12 to be hardened.
- the curable resin it is preferable to use a urethane, an epoxy polymer, silicone, or a resin mainly composed of at least one selected from those modified.
- the curable resin is most preferably composed mainly of acrylic-modified urethane.
- the acrylic-modified urethane include a polyether polyol urethane acrylate oligomer, a polyester polyol urethane acrylate oligomer, or a urethane acrylate oligomer having both an ether group and an ester group in the molecule and a carbonate group.
- examples thereof include urethane acrylate oligomers of carbonate diol.
- the polyether polyol include polyethylene glycol, polypropylene glycol, polytetramethylene glycol, and polyethylene.
- Rihexamethylene glycol and 1,3 butylene glycol, 1,4-butylene glycol, 1,6 hexanediol, neopentyl glycol, cyclohexanedimethanol, 2,2 bis (4 hydroxycyclohexyl) propane, bisphenol A compound in which ethylene oxide or propylene oxide is added to A or the like can be used.
- the polyester polyol can be obtained by reacting an alcohol component and an acid component.
- an alcohol component for example, polyethylene glycol, polypropylene glycol, polytetramethylene glycol mononore, 1,3 butylene glycolenole, 1,4-butyleneglycol Nole, 1,6-hexanediol, neopentyl glycol, 1,4-cyclohexanedimethanol, 2,2 bis (4-hydroxycyclohexyl) propane, bisphenol A, etc., ethylene oxide or propylene oxide, etc.
- a compound obtained by simultaneously reacting the above-mentioned alcohol component, acid component, and ⁇ -force prolatatone can also be used as the polyester polyol.
- Carbonic acid diols include, for example, diphenyl carbonate, bis-black-mouthed phenolate, dinaphtholene carbonate, phenyl root ruyl carbonate, phenyl-chlorophenyl carbonate, 2 tolyl 4 tolyl carbonate, dimethyl.
- Diaryl carbonate or dialkyl carbonate such as carbonate and jetyl carbonate and diols such as 1,6 hexanediol, neopentyl glycol, 1,4 butanediol, 1,8 octanediol, 1,4-cyclohexane Reaction of xanthodiethanol, 2-methylpropanediol, dipropylene glycol, dibutylene glycol or the above diol compounds with dicarboxylic acids such as oxalic acid, malonic acid, succinic acid, adipic acid, azelaic acid, hexahydrophthalic acid, etc.
- Product, or a reaction product of ⁇ - force Purorata tons can be obtained by transesterification of the polyester diol.
- the polycarbonate diol thus obtained is a monocarbonate diol having one carbonate structure in the molecule or a polycarbonate diol having two or more carbonate structures in the molecule.
- Acrylic-modified urethane is a urethane acrylate oligomer of polyether polyol and polyester polyol
- organic diisocyanates include isophorone diisocyanate, 4,4'-dicyclohexylenomethane diisocyanate and Kisame chilled diisocyanate is particularly preferred.
- a known photopolymerization initiator can be blended with the curable resin used in the present invention.
- photopolymerization initiators include benzoin alkyl ethers such as benzoinethyl ether, benzoin isobutyl ether, and benzoin isopropyl ether; 2, 2 methoxyacetophenone, 4'-phenoxy 2, 2 dichloroacetophenone, etc.
- Anthraquinone series such as hexyl phenyl ketone, 2-ethyl anthraquinone, and 2-cloanthraquinone; in addition, thixanthone series photopolymerization initiators and the like can be mentioned.
- photopolymerization initiators can be used alone or in combination of two or more.
- the blending amount is preferably 0.5 to 5 parts by mass, more preferably 1 to 3 parts by mass, per 100 parts by mass of the acrylic-modified urethane as the main component.
- the curable resin used in the present invention may contain a photosensitizer, a thermal polymerization inhibitor, a curing accelerator, a pigment and the like as long as the effects of the present invention are not impaired.
- Viscosity at OZ second is 100 ⁇ 10 OOOPas force S preferred ⁇ , 200 ⁇ 5000Pas force S preferred ⁇ , 500 ⁇ 1000Pas force more preferred Yes. If the viscosity is less than lOOPas, the gasket shape cannot be maintained due to the large fluidity. If this viscosity exceeds lOOOOPas, it will be difficult to shape the gasket shape.
- the relationship between the common logarithm of viscosity (y) and the common logarithm of shear rate (X) 3 ⁇ 4y —ax + b (a and b are positive numbers)
- the value of a is preferably 0.3 or more, more preferably 0.35 or more, and still more preferably 0.40 or more. If the value of a is less than 0.3, the shear rate dependence of viscosity is small, so the viscosity is too low to hold the shape Powerful! /, Has a viscosity that is too high to extrude the curable resin, resulting in inconvenience.
- Examples of the method for adjusting the viscosity of the curable resin containing the components described above and the relationship between the viscosity and the shear rate to the above range include a method for controlling the molecular weight of the polymerized oligomer and a method for controlling the polarity. .
- the cover body 12 integrated with the gasket 10 formed by extruding and curing a curable resin can be formed of a synthetic resin such as metal or thermoplastic resin.
- semi-curing can be defined as a cured state obtained when irradiated with irradiation intensity of 1Z20 to 1Z5 with respect to irradiation intensity for complete curing.
- Table 1 represents the presence or absence of peeling of the formed state, at the boundary surface between the first stage and constriction of the second stage in the case of the gasket height lmm, a fully cured condition and irradiation intensity 2000mjZ cm 2.
- Peeling at the boundary surface is (0 whether or not it is peeled off at the boundary surface between the first stage and the second stage by soaking in toluene, force that tears at GO Tensilon etc., and peeling occurs at the boundary surface. This is done by testing a test method such as the force at which the gasket material itself breaks (actually, the 0 method can be clearly distinguished).
- a curable resin having active energy ray curability is used, and this is used with a three-dimensional automatic coating control device, as shown in FIG. 2A.
- the first layer 10A is formed on the surface of the cover body 12 with a single stroke (discharge process)
- the first layer 10A is semi-cured by irradiation with active energy rays (semi-curing process).
- the three-dimensional automatic coating control device used for discharging the liquid curable resin onto the cover body is not particularly limited, but is a pneumatic type, screw type, cylinder type, tube type or the like. Equipped with equipment.
- the active energy rays used for curing the curable resin include, for example, ultraviolet rays and electron beams,
- Ionizing radiation such as alpha rays, j8 rays, and zero rays.
- ultraviolet rays it is preferable to add a photopolymerization initiator and Z or a photosensitizer to the curable resin.
- ionizing radiation such as an electron beam or an electron beam is used, curing can proceed promptly without the inclusion of a photopolymerization initiator or a photosensitizer.
- Examples of the ultraviolet ray source include a xenon lamp, a low-pressure mercury lamp, a high-pressure mercury lamp, and an ultra-high pressure mercury lamp.
- the atmosphere for irradiating ultraviolet rays is an inert gas atmosphere such as nitrogen gas or carbon dioxide gas! / Is preferably an atmosphere with a reduced oxygen concentration.
- the ultraviolet curable resin can be cured even in the atmosphere.
- the irradiation atmosphere temperature can usually be 10 to 200 ° C.
- liquid curable resin is discharged on the semi-cured first layer 10A to form the second layer 10B.
- the first layer 10A and the second layer 10B are completely cured by irradiation with active energy rays (final curing step), whereby the tall gasket 10 is completed on the cover body 12.
- the active energy ray is applied to the active energy ray irradiation device so as to move in conjunction with the movement of the extrusion port of the three-dimensional automatic coating control device, that is, immediately after being discharged onto the cover body. It may be controlled to sequentially irradiate the curable resin.
- the irradiation intensity of the active energy ray when the first layer 10A is semi-cured is 1Z20 to the irradiation intensity of the active energy ray in the complete curing process in which the first layer 10A and the second layer 10B are completely cured.
- About 1Z5 is preferable.
- the semi-curing here does not mean that the degree of curing is 50%. Even if a liquid curable resin is layered on the first layer 10A, the shape can be maintained without being crushed by its own weight. It means that it is cured to a certain extent.
- the first layer 10A may be insufficiently cured and the shape of the first layer 10A may not be maintained. is there.
- the irradiation intensity of the active energy rays when the first layer 10A is semi-cured exceeds the above range, the degree of curing is extremely different between the first layer 10A and the second layer 10B after the complete curing process. (For example, the first layer 10A is excessively cured), the boundary force between the first layer 10A and the second layer 10B may be peeled off in a compressed state.
- the gasket 10 of the present embodiment has a force formed by the first layer 10A and the second layer 10B, and further includes a layer formed on the second layer 10B, and is configured by three or more layers. Also good.
- the curable resin is discharged, it is semi-cured to maintain the shape of the layer, and then discharged to pile up the curable resin. In the final curing process, all layers are cured. Harden the fat.
- curable resin for example, UV-crosslinked urethane Ecllipse manufactured by Emmenty Specialties of the United States, including acrylic-modified urethane, may be used. Of course, other types of curable resin may be used.
- CENTURY C7 20 manufactured by NORDSON hereinafter referred to as device 1
- liquid coating robot 350F-3 manufactured by Suntech hereinafter referred to as device 2
- the ultraviolet irradiation device for example, a NOVACURE ultraviolet irradiation device manufactured by EFOS can be used.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2007800047631A CN101384843B (zh) | 2006-02-09 | 2007-02-09 | 密封垫及其制造方法 |
JP2007557910A JPWO2007091685A1 (ja) | 2006-02-09 | 2007-02-09 | ガスケットおよびその製造方法 |
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Application Number | Priority Date | Filing Date | Title |
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JP2006032602 | 2006-02-09 | ||
JP2006-032602 | 2006-02-09 |
Publications (1)
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WO2007091685A1 true WO2007091685A1 (ja) | 2007-08-16 |
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ID=38345277
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2007/052399 WO2007091685A1 (ja) | 2006-02-09 | 2007-02-09 | ガスケットおよびその製造方法 |
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JP (1) | JPWO2007091685A1 (ja) |
CN (1) | CN101384843B (ja) |
WO (1) | WO2007091685A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009028335A1 (ja) * | 2007-08-24 | 2009-03-05 | Bridgestone Corporation | 多段ガスケット |
WO2015140923A1 (ja) * | 2014-03-18 | 2015-09-24 | 日本包材株式会社 | 防水用パッキンの製造方法とこの方法により製造した防水用パッキン |
KR20170117469A (ko) * | 2015-02-13 | 2017-10-23 | 케메탈 게엠베하 | 황-함유 실링 배합물을 적용하는 방법, 그를 위한 장치, 상응하게 처리된 항공우주선 및 그의 용도 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS58194513A (ja) * | 1982-05-08 | 1983-11-12 | Kinugawa Rubber Ind Co Ltd | 自動車用ウエザーストリップ |
JPH03234975A (ja) * | 1989-11-07 | 1991-10-18 | Nippon Jitsupaa Chiyuubingu Kk | ガスケットの製造法 |
JPH10288259A (ja) * | 1997-04-15 | 1998-10-27 | Ishino Gasket Kogyo Kk | メタルガスケット |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002361173A (ja) * | 2001-06-11 | 2002-12-17 | Chugoku Marine Paints Ltd | 電子線硬化積層塗膜の形成方法、その方法で形成された塗膜およびその塗膜で被覆された基材 |
JP2003120819A (ja) * | 2001-10-15 | 2003-04-23 | Nippon Mektron Ltd | ガスケット |
JP4636229B2 (ja) * | 2003-04-07 | 2011-02-23 | Nok株式会社 | ガスケットの製造方法 |
-
2007
- 2007-02-09 JP JP2007557910A patent/JPWO2007091685A1/ja active Pending
- 2007-02-09 WO PCT/JP2007/052399 patent/WO2007091685A1/ja active Application Filing
- 2007-02-09 CN CN2007800047631A patent/CN101384843B/zh not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58194513A (ja) * | 1982-05-08 | 1983-11-12 | Kinugawa Rubber Ind Co Ltd | 自動車用ウエザーストリップ |
JPH03234975A (ja) * | 1989-11-07 | 1991-10-18 | Nippon Jitsupaa Chiyuubingu Kk | ガスケットの製造法 |
JPH10288259A (ja) * | 1997-04-15 | 1998-10-27 | Ishino Gasket Kogyo Kk | メタルガスケット |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009028335A1 (ja) * | 2007-08-24 | 2009-03-05 | Bridgestone Corporation | 多段ガスケット |
JP2009052632A (ja) * | 2007-08-24 | 2009-03-12 | Bridgestone Corp | 多段ガスケット |
US8400730B2 (en) | 2007-08-24 | 2013-03-19 | Bridgestone Corporation | Multistage gasket |
CN101784823B (zh) * | 2007-08-24 | 2014-02-26 | 株式会社普利司通 | 多级密封垫 |
WO2015140923A1 (ja) * | 2014-03-18 | 2015-09-24 | 日本包材株式会社 | 防水用パッキンの製造方法とこの方法により製造した防水用パッキン |
KR20170117469A (ko) * | 2015-02-13 | 2017-10-23 | 케메탈 게엠베하 | 황-함유 실링 배합물을 적용하는 방법, 그를 위한 장치, 상응하게 처리된 항공우주선 및 그의 용도 |
JP2018508003A (ja) * | 2015-02-13 | 2018-03-22 | ケメタル ゲゼルシャフト ミット ベシュレンクテル ハフツング | 硫黄含有シーリング化合物の施与方法、これに用いられる装置、これにより処理される航空宇宙機、およびその使用法 |
JP2022095797A (ja) * | 2015-02-13 | 2022-06-28 | ケメタル ゲゼルシャフト ミット ベシュレンクテル ハフツング | 硫黄含有シーリング化合物の施与方法、これに用いられる装置、これにより処理される航空宇宙機、およびその使用法 |
JP7186503B2 (ja) | 2015-02-13 | 2022-12-09 | ケメタル ゲゼルシャフト ミット ベシュレンクテル ハフツング | 硫黄含有シーリング化合物の施与方法、これに用いられる装置 |
KR102592622B1 (ko) | 2015-02-13 | 2023-10-24 | 케메탈 게엠베하 | 황-함유 실링 배합물을 적용하는 방법, 그를 위한 장치, 상응하게 처리된 항공우주선 및 그의 용도 |
Also Published As
Publication number | Publication date |
---|---|
CN101384843B (zh) | 2011-07-27 |
CN101384843A (zh) | 2009-03-11 |
JPWO2007091685A1 (ja) | 2009-07-02 |
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