JP3353357B2 - Gasket material - Google Patents
Gasket materialInfo
- Publication number
- JP3353357B2 JP3353357B2 JP35461392A JP35461392A JP3353357B2 JP 3353357 B2 JP3353357 B2 JP 3353357B2 JP 35461392 A JP35461392 A JP 35461392A JP 35461392 A JP35461392 A JP 35461392A JP 3353357 B2 JP3353357 B2 JP 3353357B2
- Authority
- JP
- Japan
- Prior art keywords
- rubber layer
- thickness
- foamed rubber
- gasket material
- foamed
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
Landscapes
- Gasket Seals (AREA)
- Laminated Bodies (AREA)
- Sealing Material Composition (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ガスケット材料に関す
る。更に詳しくは、はみ出し耐久性、へたり性、シール
性などにすぐれたガスケット材料に関する。The present invention relates to gasket materials. More specifically, the present invention relates to a gasket material having excellent running out durability, settability, sealability and the like.
【０００２】[0002]
【従来の技術】特公平4-45548号公報には、金属製基材
シートの両面に非発泡ゴム層を介して発泡ゴム層が、各
ゴム層の自己接着作用により接合形成された複合ガスケ
ット材料が記載されており、低締付圧で高度のシール性
が発揮されると述べられている。しかしながら、この発
泡ゴム層はその厚さが0.05〜2mmと薄いため破れ易く、
その結果シール洩れが生ずるという耐久性上での問題が
みられる。2. Description of the Related Art Japanese Patent Publication No. 4-45548 discloses a composite gasket material in which a foamed rubber layer is formed on both sides of a metal base sheet via a non-foamed rubber layer by a self-adhesive action of each rubber layer. And that a high degree of sealing performance is exhibited with a low tightening pressure. However, this foam rubber layer is easily broken because its thickness is as thin as 0.05 to 2 mm,
As a result, there is a problem in durability that seal leakage occurs.
【０００３】[0003]
【発明が解決しようとする課題】本発明の目的は、はみ
出し耐久性、へたり性、シール性などの耐久性の面で改
善されたガスケット材料を提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a gasket material having improved durability such as protrusion durability, set-off property, and sealability.
【０００４】[0004]
【課題を解決するための手段】かかる本発明の目的は、
金属板上に発泡ゴム層を介して厚さ25〜90μmの非発泡
ゴム層を積層させてなり、該非発泡ゴム層は均一な厚さ
のシート状未加硫ゴム生地を接着剤を介して発泡ゴム層
に貼り付け、オーブン中で加硫して形成させたものであ
るガスケット材料によって達成される。SUMMARY OF THE INVENTION The object of the present invention is as follows.
A non-foamed rubber layer having a thickness of 25 to 90 μm is laminated on a metal plate via a foamed rubber layer, and the non-foamed rubber layer has a uniform thickness.
The sheet-like unvulcanized rubber fabric is foamed via adhesive
And vulcanized in an oven to form
It is achieved by the gasket material that.
【０００５】発泡ゴム層は、例えばそれが発泡ＮＢＲで
形成される場合、ボンデ処理鋼板などの金属板にフェノ
ール系接着剤を塗布し、焼付け処理を行った後、アミン
系発泡剤を含んだＮＢＲをトルエン-メチルエチルケト
ン混合溶媒に溶かしたゴム糊を塗布し、約60〜100℃の
オーブン中で乾燥した後、約180〜200℃のオーブン中で
約3〜10分間程度発泡させながら加硫することにより形
成され、その厚さは約100〜1000μmの範囲、一般には約
500μm程度に設定される。[0005] When the foamed rubber layer is formed of foamed NBR, for example, a phenolic adhesive is applied to a metal plate such as a bond-treated steel plate and baked, and then an NBR containing an amine-based foaming agent is applied. Is applied in a mixed solvent of toluene and methyl ethyl ketone, dried in an oven at about 60 to 100 ° C, and then vulcanized while foaming in an oven at about 180 to 200 ° C for about 3 to 10 minutes. And has a thickness in the range of about 100-1000 μm, generally about
It is set to about 500 μm.
【０００６】この発泡ゴム層の上には、非発泡ゴム層が
積層されるが、非発泡ゴム層は、発泡ゴム層が多孔質で
あることもあって、そこにフェノール系接着剤を塗布し
た上で、ゴムシートとしたＮＢＲゴム生地を貼り付ける
ことにより形成させる。A non-foamed rubber layer is laminated on the foamed rubber layer. The non-foamed rubber layer is coated with a phenolic adhesive because the foamed rubber layer is porous. Above, it is formed by sticking NBR rubber cloth as a rubber sheet.
【０００７】この場合、非発泡ゴム層の厚さは重要であ
り、所望のシール限界圧を得るためには、25〜90μmの
範囲内、好ましくは約50μm程度に設定される。これ以
下の厚さでは、強度的に不足して発泡ゴム層の補強とは
ならず、即ち発泡ゴム層の上部が破れてシール洩れを生
ずるのを防ぐことができず、一方これ以上に厚くする
と、発泡ゴム層を設けたガスケットの特質である低面圧
下における相手面への追随性が悪くなる。In this case, the thickness of the non-foamed rubber layer is important, and is set in the range of 25 to 90 μm, preferably about 50 μm in order to obtain a desired sealing limit pressure. If the thickness is less than this, the strength is insufficient and the foamed rubber layer is not reinforced, that is, the upper part of the foamed rubber layer cannot be prevented from being broken to cause a seal leak. In addition, the gasket provided with the foamed rubber layer has poor followability to the mating surface under low surface pressure, which is a characteristic of the gasket.
【０００８】以上では、発泡ゴム層および非発泡ゴム層
共、ＮＢＲから形成されるものについて説明したが、天
然ゴムあるいは他の合成ゴムも用いることができる。た
だし、ガスケット材料としては、いずれもＮＢＲを用い
ることが好ましい。In the above description, both the foamed rubber layer and the non-foamed rubber layer are formed from NBR. However, natural rubber or another synthetic rubber can be used. However, it is preferable to use NBR as the gasket material.
【０００９】[0009]
【発明の効果】金属板上に、発泡ゴム層を介して厚さ25
〜90μmの非発泡ゴム層を積層させ、強度の最も低い発
泡ゴム層の上部を補強することにより、はみ出し耐久
性、へたり性、シール性などの耐久性の面で改善された
ガスケット材料が得られた。従って、このガスケット材
料は、エンジンヘッドガスケット等の低面圧シールに使
用されるガスケットの製造に有効に用いられる。The present invention has a thickness of 25 mm on a metal plate via a foamed rubber layer.
By laminating a non-foamed rubber layer of ~ 90 μm and reinforcing the upper part of the foamed rubber layer with the lowest strength, a gasket material with improved durability such as protruding durability, settability, and sealability is obtained. Was done. Therefore, this gasket material is effectively used for manufacturing a gasket used for a low surface pressure seal such as an engine head gasket.
【００１０】[0010]
【実施例】次に、実施例について本発明を説明する。Next, the present invention will be described with reference to examples.
【００１１】実施例１ ボンデ処理鋼板(厚さ250μm)にフェノール系接着剤を塗
布し、180℃のオーブン中で8分間焼き付けた。その上
に、市販アミン系発泡剤10phrを含んだＮＢＲをトルエ
ン-メチルエチルケトン(9：1)混合溶媒に溶かしたゴム
糊を800μmの厚さで塗布し、80℃のオーブン中で5分間
乾燥した後、180℃のオーブン中で6分間発泡させながら
加硫して、厚さ500μmの発泡ゴム層を形成させた。この
発泡ゴム層の上にフェノール系接着剤を塗布した後、ロ
ーラヘッドを使用して50μmの均一な厚さのゴムシート
としたＮＢＲゴム生地を貼り付け、180℃のオーブン中
で5分間加硫した。Example 1 A phenolic adhesive was applied to a bond-treated steel sheet (250 μm in thickness) and baked in an oven at 180 ° C. for 8 minutes. A rubber paste obtained by dissolving NBR containing 10 phr of a commercially available amine-based blowing agent in a mixed solvent of toluene and methyl ethyl ketone (9: 1) is applied to a thickness of 800 μm, and dried in an oven at 80 ° C. for 5 minutes. The mixture was vulcanized while being foamed in an oven at 180 ° C. for 6 minutes to form a foamed rubber layer having a thickness of 500 μm. After applying a phenolic adhesive on this foamed rubber layer, NBR rubber fabric as a rubber sheet with a uniform thickness of 50 μm is pasted using a roller head, and vulcanized in an oven at 180 ° C. for 5 minutes. did.
【００１２】この二重構造にしたガスケット材料のはみ
出し耐久試験の結果は非常に良好で、150℃、10分間の
プレスによる加圧試験では、はみ出し耐久度の５段階評
価(５が最も良い)で次のような結果が得られ、従来品
(同じ材質で発泡ゴム層のみを有する同厚のもの)と比較
して、大幅な性能の向上が認められた。 The gasket material having this double structure has a very good endurance durability test result. In a pressurization test using a press at 150 ° C. for 10 minutes, a five-stage evaluation of the endurance durability (5 is the best). The following results were obtained,
Compared with (the same material and the same thickness having only the foamed rubber layer), a significant improvement in performance was observed.
【００１３】また、へたり試験の結果も良好で、このガ
スケット材料試験片に、0.4903N以下の加圧荷重をかけ
て厚みを25%圧縮し、この状態で70℃で22時間静置した
後荷重を除き、試験片の厚みの変化量を測定したとこ
ろ、16.5%(従来品は23.8%)であった。[0013] Further, the results of the set-off test are also good. After applying a pressure load of 0.4903 N or less to this gasket material test piece, the thickness thereof is compressed by 25%, and the gasket material is left standing at 70 ° C for 22 hours in this state. When the change in thickness of the test piece was measured except for the load, it was 16.5% (23.8% for the conventional product).
【００１４】更に、このガスケット材料からガスケット
を成形し、シール性について検討したところ、面圧30kg
f/cm2時に、シール限界圧は58kgf/cm2(従来品は41kgf/c
m2)であり、シール圧45kgf/cm2×1000時間(従来品は30k
gf/cm2×760時間)でシールに破れが認められた。Further, a gasket was formed from this gasket material, and the sealing performance was examined.
Sometimes f / cm 2, the seal limit pressure is 58kgf / cm 2 (conventional products 41kgf / c
m 2 ), and the sealing pressure is 45 kgf / cm 2 × 1000 hours (30 k
(gf / cm 2 × 760 hours), the seal was broken.
【００１５】実施例２ 実施例１において、ゴムシートの厚さを種々変更し、ガ
スケットのシール限界圧を測定すると、次のような結果
が得られた。 ゴムシート厚(μm) シール限界圧(kgf/cm2) 20 40 30 55 50 58 80 48 100 36Example 2 In Example 1, when the thickness of the rubber sheet was variously changed and the sealing limit pressure of the gasket was measured, the following results were obtained. Rubber sheet thickness (μm) Seal limit pressure (kgf / cm 2 ) 20 40 30 55 50 58 80 48 100 36
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) C09K 3/10 B32B 5/18 - 5/20 F16J 15/12 - 15/14 B32B 15/06 Continuation of the front page (58) Field surveyed (Int. Cl. 7 , DB name) C09K 3/10 B32B 5/18-5/20 F16J 15/12-15/14 B32B 15/06
Claims (1)
90μmの非発泡ゴム層を積層してなり、該非発泡ゴム層
は均一な厚さのシート状未加硫ゴム生地を接着剤を介し
て発泡ゴム層に貼り付け、オーブン中で加硫して形成さ
せたものであるガスケット材料。1. A metal sheet having a thickness of 25 to
A non-foamed rubber layer of 90 μm is laminated ,
Is a sheet of unvulcanized rubber fabric of uniform thickness with adhesive
To the foam rubber layer and vulcanized in an oven.
Gasket material are those that were.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35461392A JP3353357B2 (en) | 1992-12-16 | 1992-12-16 | Gasket material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35461392A JP3353357B2 (en) | 1992-12-16 | 1992-12-16 | Gasket material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06184522A JPH06184522A (en) | 1994-07-05 |
| JP3353357B2 true JP3353357B2 (en) | 2002-12-03 |
Family
ID=18438745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35461392A Expired - Fee Related JP3353357B2 (en) | 1992-12-16 | 1992-12-16 | Gasket material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3353357B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08258203A (en) * | 1995-03-23 | 1996-10-08 | Nichias Corp | Separate plate for control valve in automatic transmission |
| JP4047413B2 (en) * | 1997-03-14 | 2008-02-13 | 日本ラインツ株式会社 | Rubber-coated gasket and manufacturing method thereof |
| JPH10273646A (en) * | 1997-03-28 | 1998-10-13 | Nichias Corp | Material for foamed rubber coated gasket |
-
1992
- 1992-12-16 JP JP35461392A patent/JP3353357B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06184522A (en) | 1994-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4961991A (en) | Flexible graphite laminate | |
| EP1671555B1 (en) | Work glove | |
| US6851945B2 (en) | Seal-less reusable vacuum bag | |
| US2749960A (en) | Composite structures | |
| US4548858A (en) | Method of making a compressible printing blanket and a compressible printing blanket produced thereby | |
| JPH05508668A (en) | non-stick seam tape | |
| EP1264126B1 (en) | Gaskets with controlled flange surface adhesion properties | |
| US3387416A (en) | Sealing and spacing element | |
| JP3353357B2 (en) | Gasket material | |
| EP0867646B1 (en) | Material for a gasket coated with foam rubber and manufacturing process of the same | |
| US5405690A (en) | Rubber-rubber bonded composite structure | |
| US3296061A (en) | Rubber laminates | |
| JPH07156183A (en) | Production of composite metal plate | |
| JPH0445548B2 (en) | ||
| JPH05346171A (en) | Gasket material and manufacture thereof | |
| JPH09131822A (en) | Shaped sealing material | |
| JP2906078B2 (en) | Manufacturing method of joint sheet gasket | |
| ES8202858A1 (en) | Anaerobically Curing Rubber Adhesive Compositions | |
| JPS5877970A (en) | Metallic gasket | |
| JPH01214654A (en) | Laminated waterproof sheet | |
| JPH0517737A (en) | Metal substrate graphite gasket | |
| CN107163545A (en) | A kind of environment-friendly type dermatine | |
| JP2609662B2 (en) | Waterproof construction method | |
| JP3163463B2 (en) | Adhesive composite based on high density polyethylene | |
| US3513047A (en) | Process for producing cushionless retreaded tires |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080927 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090927 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100927 Year of fee payment: 8 |
|
| LAPS | Cancellation because of no payment of annual fees |