JPH07156183A - Production of composite metal plate - Google Patents
Production of composite metal plateInfo
- Publication number
- JPH07156183A JPH07156183A JP5341493A JP34149393A JPH07156183A JP H07156183 A JPH07156183 A JP H07156183A JP 5341493 A JP5341493 A JP 5341493A JP 34149393 A JP34149393 A JP 34149393A JP H07156183 A JPH07156183 A JP H07156183A
- Authority
- JP
- Japan
- Prior art keywords
- metal plate
- foamed
- composite metal
- fluororubber
- adhesive
- 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.)
- Pending
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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
Landscapes
- Sealing Material Composition (AREA)
- Laminated Bodies (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Molding Of Porous Articles (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、複合金属板の製造法に
関する。更に詳しくは、ガスケット材料などとして有効
に用いられる発泡ゴム接着タイプの複合金属板の製造法
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a composite metal plate. More specifically, the present invention relates to a method for producing a foamed rubber adhesive type composite metal plate that is effectively used as a gasket material 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 bonded to both sides of a metal base sheet through non-foamed rubber layers by a self-adhesive action of each rubber layer. Is described, and it is said that a high degree of sealing performance is exhibited at a low tightening pressure. However, since this foamed rubber layer is as thin as 0.05 to 2 mm, it is easy to tear,
As a result, there is a problem in durability that seal leakage occurs.
【０００３】この従来技術では、発泡ゴム層がコーティ
ング法により厚さが0.1〜0.3mmの発泡NBR層として形成
されることが、各実施例に記載されている。このような
コーティング法では、そのコーティング厚さを100μm以
上とすることは一般に困難であり、そのため発泡ゴム層
の厚さを500μm(0.5mm)以上に形成させるためには、発
泡倍率を５倍以上にする必要があり、このようなことは
現在の技術水準からみて発泡ゴムについては容易ではな
い。In this prior art, it is described in each example that the foamed rubber layer is formed as a foamed NBR layer having a thickness of 0.1 to 0.3 mm by a coating method. In such a coating method, it is generally difficult to set the coating thickness to 100 μm or more. Therefore, in order to form the foam rubber layer to a thickness of 500 μm (0.5 mm) or more, the expansion ratio should be 5 times or more. This is not easy for foamed rubber from the current state of the art.
【０００４】かかる発泡ゴム接着タイプ金属ガスケット
材料におけるシール洩れの問題は、発泡ゴム層の厚さだ
けの問題ではなく、発泡ゴム材料としてNBRが主として
用いられているため、120℃以上の温度に曝される使用
部位での耐熱性の問題もあり、NBRは耐熱性がないため
発泡層がつぶれてシール洩れを生ずるという現象もみら
れる。The problem of seal leakage in the foamed rubber adhesive type metal gasket material is not only the thickness of the foamed rubber layer, but NBR is mainly used as the foamed rubber material, so that it is exposed to a temperature of 120 ° C. or more. There is also a problem of heat resistance at the used part, and NBR does not have heat resistance, so there is a phenomenon that the foam layer collapses and seal leakage occurs.
【０００５】そのため、NBRに代えて、圧縮永久歪が小
さいフッ素ゴムで発泡ゴム層を形成させ、耐熱へたり性
を向上させることによりシール性を向上させることが考
えられる。しかしながら、フッ素ゴムのコーティング液
の粘度はNBRのコーティング液の粘度よりもはるかに低
く、コーティング厚さを厚くすることができないため、
到底所望の厚さを有する発泡フッ素ゴム層を形成させる
ことができず、この面からシール性の向上が達成されな
いという新たな問題がみられた。Therefore, it is considered that, instead of NBR, a foamed rubber layer is formed of fluororubber having a small compression set to improve the heat resistance and settling property to improve the sealing property. However, the viscosity of fluororubber coating liquid is much lower than that of NBR coating liquid, and the coating thickness cannot be increased.
There was a new problem that a foamed fluororubber layer having a desired thickness could not be formed at all, and the improvement of the sealing property was not achieved from this aspect.
【０００６】[0006]
【発明が解決しようとする課題】本発明の目的は、発泡
フッ素ゴム接着タイプの複合金属板であって、これをガ
スケット材料として用いた場合においても、発泡ゴム層
のへたりの経時的変化が少なく、シール寿命を大幅に延
ばすことができるものを提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a foamed fluororubber adhesive type composite metal plate, and even when this composite metal plate is used as a gasket material, the change over time of sag of the foamed rubber layer is suppressed. The object is to provide a product that has a small number and can significantly extend the life of the seal.
【０００７】[0007]
【課題を解決するための手段】かかる本発明の目的は、
金属板上に接着剤を介して発泡剤含有フッ素ゴムの未加
硫シートを貼り合わせた後、加熱して発泡および加硫さ
せることにより、発泡フッ素ゴム層を接着させた複合金
属板を製造することにより達成される。The object of the present invention is as follows.
A non-vulcanized sheet of a fluororubber containing a foaming agent is bonded onto a metal plate via an adhesive, and then heated to foam and vulcanize to produce a composite metal plate having a foamed fluororubber layer adhered thereto. It is achieved by
【０００８】金属板としては、複合金属板の主たる用途
がガスケット材料にあるので、鋼板、ステンレス鋼板、
アルミニウム板等であって、その厚さが約0.2〜1.5mm程
度のものが用いられる。これらの金属板には、フェノー
ル系接着剤などの接着剤が約10μm以下の厚さの接着層
を形成させるような量で塗布される。As the metal plate, the main use of the composite metal plate is as a gasket material.
An aluminum plate or the like having a thickness of about 0.2 to 1.5 mm is used. An adhesive such as a phenolic adhesive is applied to these metal plates in such an amount that an adhesive layer having a thickness of about 10 μm or less is formed.
【０００９】この接着剤塗布層上には、発泡剤含有フッ
素ゴムの未加硫シートが貼り合わされる。かかるフッ素
ゴム未加硫シートは、フッ素ゴム100重量部当り約3〜10
重量部、好ましくは約8〜15重量部の発泡剤、例えばア
ミン系発泡剤、アゾ系発泡剤、無機系発泡剤等を他のゴ
ム配合成分と共にフッ素ゴムに添加し、このようなフッ
素ゴムコンパウンドよりなるゴム生地をＴダイ付押出機
を用いて、約0.5mm以下の厚さのシート状に押し出すこ
とにより得られる。得られたフッ素ゴムの未加硫シート
は、ゴムローラ等を用いて金属板上の接着剤塗布層上に
貼り合わされ、フッ素ゴムの加熱温度に加熱することに
より発泡および加硫して、そこに厚さ約0.2〜1.0mm程
度、好ましくは約0.5〜0.8mm程度の微細発泡した発泡フ
ッ素ゴム層を形成させる。An unvulcanized sheet of fluororubber containing a foaming agent is laminated on the adhesive coating layer. Such a fluororubber unvulcanized sheet has a content of about 3 to 10 per 100 parts by weight of fluororubber.
By weight, preferably about 8 to 15 parts by weight of a foaming agent, such as an amine-based foaming agent, an azo-based foaming agent, an inorganic foaming agent, etc., is added to a fluororubber together with other rubber compounding ingredients, and such a fluororubber compound is prepared. The obtained rubber dough is extruded into a sheet having a thickness of about 0.5 mm or less by using an extruder with a T-die. The unvulcanized sheet of the obtained fluororubber is laminated on the adhesive coating layer on the metal plate using a rubber roller or the like, foamed and vulcanized by heating to the heating temperature of the fluororubber, and there is a thick layer there. A finely foamed fluororubber layer having a size of about 0.2 to 1.0 mm, preferably about 0.5 to 0.8 mm is formed.
【００１０】[0010]
【発明の効果】本発明に係る複合金属板は、本来圧縮永
久歪の小さいフッ素ゴムを用い、しかもそれのシールを
確保するのに十分な厚さの発泡ゴム層として金属板上に
形成させているので、高温に曝される使用部位で使用し
た場合にも発泡ゴム層のへたりの経時的変化が少なく、
シール寿命の大幅な延長が図られる。従って、この発泡
フッ素ゴム接着タイプの複合金属板は、ガスケット材料
などとして有効に使用することができる。EFFECT OF THE INVENTION The composite metal plate according to the present invention is originally formed of fluororubber having a small compression set, and is formed on the metal plate as a foamed rubber layer having a sufficient thickness to secure the seal. Therefore, even when it is used in a site where it is exposed to high temperatures, the fatigue of the foamed rubber layer does not change over time,
The life of the seal can be significantly extended. Therefore, the foamed fluororubber adhesive type composite metal plate can be effectively used as a gasket material or the like.
【００１１】[0011]
【実施例】次に、実施例について本発明を説明する。EXAMPLES The present invention will now be described with reference to examples.
【００１２】実施例１ 表面を洗浄した厚さ0.25mmの鋼板の両面に、シラン系接
着剤(日本ユニカー製品AP133)を塗布した後、 フッ素ゴム(昭和電工・デュポン製品バイトンA-100) 100重量部 MTカーボンブラック 5 酸化マグネシウム 6 水酸化カルシウム 3 ワックス(昭和電工・デュポン製品VPA No.2) 2 加硫剤(昭和電工・デュポン製品キュラティブ50) 5.5 アミン系発泡剤(永和化成製品セルラーGX) 5 よりなるフッ素ゴムコンパウンドをＴダイ付き押出機
(ローラヘッド)より0.3mmの厚さにシート出ししたもの
を、ゴムローラで貼り合わせた。その後、180℃で10分
間加熱して、厚さ1.0mmの微細発泡した発泡フッ素ゴム
層を、厚さ5μmの接着層を介して鋼板上に形成させた。Example 1 A silane-based adhesive (AP133, a product of Nippon Unicar Co., Ltd.) was applied to both sides of a steel plate having a cleaned surface of 0.25 mm, and then 100 parts by weight of fluororubber (Viton A-100, manufactured by DuPont, Showa Denko). Part MT carbon black 5 Magnesium oxide 6 Calcium hydroxide 3 Wax (Showa Denko / Dupont product VPA No.2) 2 Vulcanizing agent (Showa Denko / Dupont product Curative 50) 5.5 Amine-based blowing agent (Eiwa Chemical Cellular GX) 5 Extruder with a T-die
A sheet rolled out from the (roller head) to a thickness of 0.3 mm was laminated with a rubber roller. Then, it was heated at 180 ° C. for 10 minutes to form a foamed fluororubber layer having a thickness of 1.0 mm on the steel sheet via an adhesive layer having a thickness of 5 μm.
【００１３】得られた複合金属板から、28×45mmφまた
は72×90mmφのガスケット材料を打ち抜き、5kgf/cm2の
圧力で締め付け、窒素ガスを8kgf/cm2負荷するシール性
評価試験を室温下で行ったが、いずれの供試体にも洩れ
が認められなかった。また、70℃、500時間経過後にお
いても、洩れが認められなかった。[0013] From the obtained composite metal plate punched gasket material 28 × 45 mm or 72 × 90mmφ, 5kgf / cm tightened second pressure, the sealing property evaluation test for nitrogen gas 8 kgf / cm 2 load at room temperature No leakage was found in any of the specimens. No leakage was observed even after 500 hours at 70 ° C.
【００１４】実施例２ 実施例１において、発泡剤として無機系発泡剤(永和化
成製品FE507)を用い、厚さ0.8mmの発泡フッ素ゴム層
を、厚さ5μmの接着層を介して鋼板上に形成させた。Example 2 In Example 1, an inorganic foaming agent (FE507, manufactured by Eiwa Kasei Co., Ltd.) was used as a foaming agent, and a foamed fluororubber layer having a thickness of 0.8 mm was formed on a steel sheet through an adhesive layer having a thickness of 5 μm. Formed.
【００１５】得られた複合金属板から打ち抜かれたガス
ケット材料のシール性評価試験では、いずれの供試体に
も洩れが認められなかった。また、70℃、500時間経過
後においても、洩れが認められなかった。In the sealability evaluation test of the gasket material punched from the obtained composite metal plate, no leakage was found in any of the test pieces. No leakage was observed even after 500 hours at 70 ° C.
【００１６】実施例３ 実施例１において、発泡剤としてアゾ系発泡剤(永和化
成製品ビンホールAC#3)を用い、厚さ0.6mmの発泡フッ素
ゴム層を、厚さ5μmの接着層を介して鋼板上に形成させ
た。Example 3 In Example 1, an azo type foaming agent (Binhole AC # 3 manufactured by Eiwa Chemical Co., Ltd.) was used as a foaming agent, and a foamed fluororubber layer having a thickness of 0.6 mm was formed through an adhesive layer having a thickness of 5 μm. It was formed on a steel plate.
【００１７】得られた複合金属板から打ち抜かれたガス
ケット材料のシール性評価試験では、いずれの供試体に
も洩れが認められなかった。また、70℃、500時間経過
後においても、洩れが認められなかった。In the sealability evaluation test of the gasket material punched from the obtained composite metal plate, no leak was observed in any of the test pieces. No leakage was observed even after 500 hours at 70 ° C.
【００１８】比較例 表面を洗浄した厚さ0.25mmの鋼板の両面に、フェノール
系接着剤(ロード社製品シクソン715)を塗布した後、 NBR(日本合成ゴム製品N220S) 100重量部 MTカーボンブラック 40 酸化亜鉛 5 ステアリン酸 2 老化防止剤(N-フェニル-N´-イソプロピル-p-フェニレンジアミン) 3 可塑剤(ジオクチルフタレート) 8 イオウ 1.6 テトラメチルチウラムジスルフィド 1 N-シクロヘキシル-2-ベンゾチアジルスルフェンアミド 1.5 アミン系発泡剤(永和化成製品セルラーGX) 10 よりなるNBRコンパウンドを、メチルエチルケトン-トル
エン(1：9)混合溶媒中に30重量%の濃度で溶解させ、得
られたゴム糊を鋼板上にコーティングした。その後、18
0℃で10分間加熱して、厚さ0.5mmの微細発泡した発泡NB
R層を鋼板上に形成させた。Comparative Example After applying a phenol-based adhesive (Sixon 715, a product of Lord Co., Ltd.) to both sides of a 0.25 mm thick steel plate whose surface has been cleaned, 100 parts by weight of NBR (N220S of Japan Synthetic Rubber Product) MT carbon black 40 Zinc oxide 5 Stearic acid 2 Anti-aging agent (N-phenyl-N'-isopropyl-p-phenylenediamine) 3 Plasticizer (dioctyl phthalate) 8 Sulfur 1.6 Tetramethylthiuram disulfide 1 N-Cyclohexyl-2-benzothiazylsulfene Amide 1.5 NBR compound consisting of amine-based foaming agent (Cellular GX, Eiwa Chemical Co., Ltd.) 10 was dissolved in methyl ethyl ketone-toluene (1: 9) mixed solvent at a concentration of 30% by weight, and the obtained rubber paste was applied on a steel plate. Coated. Then 18
Foamed NB finely foamed with a thickness of 0.5 mm after heating at 0 ℃ for 10 minutes
The R layer was formed on the steel plate.
【００１９】得られた複合金属板について、実施例１と
同様のシール性評価試験を行い、いずれのガスケット材
料供試体にも室温条件下では洩れは認められなかったも
のの、70℃では100時間経過後に洩れの発生が認められ
た。The obtained composite metal plate was subjected to the same sealability evaluation test as in Example 1, and no leakage was observed in any of the gasket material specimens at room temperature, but at 70 ° C., 100 hours passed. Later a leak was observed.
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─────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成６年７月１８日[Submission date] July 18, 1994
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００８[Correction target item name] 0008
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００８】 金属板としては、複合金属板の主たる用
途がガスケット材料にあるので、鋼板、ステンレス鋼
板、アルミニウム板等であって、その厚さが約０．２〜
１．５ｍｍ程度のものが用いられる。これらの金属板に
は、シラン系接着剤などの接着剤が約１μｍ以下の厚さ
の接着層を形成させるような量で塗布される。As the metal plate, the main use of the composite metal plate is as a gasket material, so that it is a steel plate, a stainless steel plate, an aluminum plate or the like, and its thickness is about 0.2 to
The thing of about 1.5 mm is used. An adhesive such as a silane-based adhesive is applied to these metal plates in an amount such that an adhesive layer having a thickness of about 1 μm or less is formed.
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１６[Correction target item name] 0016
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１６】実施例３ 実施例１において、発泡剤としてアゾ系発泡剤（永和化
成製品ビニホールＡＣ＃３）を用い、厚さ０．６ｍｍの
発泡フッ素ゴム層を、厚さ５μｍの接着層を介して鋼板
上に形成させた。Example 3 In Example 1, an azo type foaming agent ( Vinehole AC # 3 manufactured by Eiwa Chemical Co., Ltd. ) was used as a foaming agent, and a foamed fluororubber layer having a thickness of 0.6 mm was interposed with an adhesive layer having a thickness of 5 μm. Formed on a steel plate.
【手続補正３】[Procedure 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１８[Correction target item name] 0018
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１８】比較例 表面を洗浄した厚さ０．２５ｍｍの鋼板の両面に、フェ
ノール系接着剤（モートン社製品シクソン７１５）を塗
布した後、 ＮＢＲ（日本合成ゴム製品Ｎ２２０Ｓ） １００重量部 ＭＴカーボンブラック ４０ 酸化亜鉛 ５ ステアリン酸 ２ 老化防止剤（Ｎ−フェニル−Ｎ′−イソプロピル−ｐ−フェニレンジアミン） ３ 可塑剤（ジオクチルフタレート） ８ イオウ １．６ テトラメチルチウラムジスルフィド １ Ｎ−シクロヘキシル−２−ベンゾチアジルスルフェンアミド １．５ アミン系発泡剤（永和化成製品セルラーＧＸ） １０ よりなるＮＢＲコンパウンドを、メチルエチルケトン−
トルエン（１：９）混合溶媒中に３０重量％の濃度で溶
解させ、得られたゴム糊を鋼板上にコーティングした。
その後１８０℃で１０分間加熱して、厚さ０．５ｍｍの
微細発泡した発泡ＮＢＲ層を鋼板上に形成させた。Comparative Example A phenol adhesive (Sixon 715, a product of Morton Co., Ltd.) was applied to both sides of a steel plate having a washed surface of 0.25 mm, and then NBR (N220S of Japan Synthetic Rubber Product) 100 parts by weight MT carbon black 40 Zinc oxide 5 Stearic acid 2 Anti-aging agent (N-phenyl-N'-isopropyl-p-phenylenediamine) 3 Plasticizer (dioctylphthalate) 8 Sulfur 1.6 Tetramethylthiuram disulfide 1 N-Cyclohexyl-2-benzothia Dilusulfenamide 1.5 Amine-based foaming agent (Cellular GX manufactured by Eiwa Chemical Co., Ltd.) 10 was used as an NBR compound in methyl ethyl ketone-
The mixture was dissolved in a mixed solvent of toluene (1: 9) at a concentration of 30% by weight, and the obtained rubber paste was coated on a steel plate.
Then, it heated at 180 degreeC for 10 minute (s), and formed the 0.5-mm-thick finely foamed NBR layer on the steel plate.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０９Ｋ 3/10 Ｍ // Ｂ２９Ｋ 19:00 105:04 Ｂ２９Ｌ 9:00 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display area C09K 3/10 M // B29K 19:00 105: 04 B29L 9:00
Claims (2)
ッ素ゴムの未加硫シートを貼り合わせた後、加熱して発
泡および加硫させることを特徴とする発泡フッ素ゴム層
を接着させた複合金属板の製造法。1. A foamed fluororubber layer, characterized in that an unvulcanized sheet of a foaming agent-containing fluororubber is bonded onto a metal plate via an adhesive and then heated to foam and vulcanize. Method for manufacturing composite metal plates.
属板よりなるガスケット材料。2. A gasket material comprising a composite metal plate produced by the method according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5341493A JPH07156183A (en) | 1993-12-10 | 1993-12-10 | Production of composite metal plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5341493A JPH07156183A (en) | 1993-12-10 | 1993-12-10 | Production of composite metal plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07156183A true JPH07156183A (en) | 1995-06-20 |
Family
ID=18346488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5341493A Pending JPH07156183A (en) | 1993-12-10 | 1993-12-10 | Production of composite metal plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07156183A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100721462B1 (en) * | 2004-05-31 | 2007-05-23 | 주식회사 엘지화학 | Adhesive radiation sheet |
| EA017433B1 (en) * | 2011-02-25 | 2012-12-28 | Общество С Ограниченной Ответственностью "Бцм" | Method of production of reinforced gasket material |
| CN103950238A (en) * | 2014-04-22 | 2014-07-30 | 安徽经天金属表面处理科技有限公司 | Impact resistant ceramic composite board and preparation method thereof |
| JP2019065169A (en) * | 2017-09-29 | 2019-04-25 | 積水化学工業株式会社 | Rubber resin crosslinked foam and water stop sealing material |
-
1993
- 1993-12-10 JP JP5341493A patent/JPH07156183A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100721462B1 (en) * | 2004-05-31 | 2007-05-23 | 주식회사 엘지화학 | Adhesive radiation sheet |
| EA017433B1 (en) * | 2011-02-25 | 2012-12-28 | Общество С Ограниченной Ответственностью "Бцм" | Method of production of reinforced gasket material |
| CN103950238A (en) * | 2014-04-22 | 2014-07-30 | 安徽经天金属表面处理科技有限公司 | Impact resistant ceramic composite board and preparation method thereof |
| JP2019065169A (en) * | 2017-09-29 | 2019-04-25 | 積水化学工業株式会社 | Rubber resin crosslinked foam and water stop sealing material |
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