JPH11351399A - Spiral gasket - Google Patents
Spiral gasketInfo
- Publication number
- JPH11351399A JPH11351399A JP17395198A JP17395198A JPH11351399A JP H11351399 A JPH11351399 A JP H11351399A JP 17395198 A JP17395198 A JP 17395198A JP 17395198 A JP17395198 A JP 17395198A JP H11351399 A JPH11351399 A JP H11351399A
- Authority
- JP
- Japan
- Prior art keywords
- tape
- expanded graphite
- spiral gasket
- filler material
- mica
- 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.)
- Granted
Links
Landscapes
- Gasket Seals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高温高圧の機器や
配管の継手部に使われ、水、油、蒸気、ガス等の流体を
シールする目的で、テープ状の金属製波形薄板（以下フ
ープ材と略記する）と石綿や膨張黒鉛等のテープ状の充
填材（以下フィラー材と略記する）を互いに重ね合わせ
た状態で複数回渦巻状に巻回してなる渦巻形ガスケット
に係り、特に高温の酸化性雰囲気で使用する場合に有用
な渦巻形ガスケットの構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for joints of high-temperature and high-pressure equipment and pipes, and is used for sealing a fluid such as water, oil, steam, gas or the like. Material) and a tape-like filler (hereinafter abbreviated as filler material) such as asbestos or expanded graphite. The present invention relates to a structure of a spiral gasket useful when used in an oxidizing atmosphere.
【０００２】[0002]
【従来の技術】渦巻形ガスケットは、事前に断面が略Ｖ
字形に成形されているテープ状の金属製のフープ材と石
綿テープ等のフィラー材をはさみ、互いに重ね合わせて
渦巻状に巻回して構成してなる構造を有し、この構造を
基本形と称している。そして、それ以外に締付圧力によ
るガスケット本体の内側への変形の防止やセンタリング
を目的として、金属製補強リンクをガスケット本体の内
側や外側あるいは両方に設けた内輪付、外輪付、内外輪
付などと称される種々のタイプが知られており、一般に
高温高圧用ガスケットとして広く使われている。2. Description of the Related Art A spiral gasket has a cross section of approximately V in advance.
It has a structure in which a tape-shaped metal hoop material and a filler material such as asbestos tape, which are formed in a letter shape, are sandwiched and wound in a spiral shape so as to overlap each other, and this structure is referred to as a basic shape. I have. In addition, for the purpose of preventing deformation of the gasket body inside due to the tightening pressure and centering, metal reinforcing links are provided on the inside and / or outside of the gasket body, with inner rings, outer rings, inner and outer rings, etc. Various types are known, and are generally widely used as high-temperature and high-pressure gaskets.
【０００３】フィラー材の種類としては、従来は石綿ペ
ーパーを帯状にスリットした石綿テープが一般的であっ
たが、石綿繊維は天然鉱物であり、資源の枯渇が心配さ
れることや、石綿繊維が原因と推測されている健康障害
が社会問題となって世界的に石綿の使用が制限される傾
向となってきたため、現在は石綿以外の無機繊維を主材
料としたノンアスベストペーパーをスリットしたもの
（以下ＮＡテープと略記する）が使われるようになって
いる。また、酸・アルカリ等の耐食性を要求される用途
には未焼成のＰＴＦＥテープが使われ、極低温条件や特
に高いシール性を要求される用途には、柔軟性と弾力性
を兼ね備えた膨張黒鉛テープが使われている。Conventionally, as filler material, asbestos tape obtained by slitting asbestos paper in a band shape has been generally used. However, asbestos fiber is a natural mineral, and there is a concern that resources may be depleted. Due to the presumed cause of health disorders becoming a social problem and the tendency to limit the use of asbestos worldwide, at present, non-asbestos paper made from non-asbestos-based non-asbestos paper ( (Hereinafter abbreviated as NA tape)). Unsintered PTFE tape is used for applications requiring corrosion resistance such as acids and alkalis. For applications requiring extremely low temperature conditions or particularly high sealing properties, expanded graphite having both flexibility and elasticity is used. Tape is used.
【０００４】この渦巻形ガスケットは、略Ｖ字形の金属
製フープ材とクッション性を持つフィラー材を交互に重
ね合わせて巻回する構造をしているため弾力性に富み、
熱による膨張収縮にも対応できるためシール性に優れ、
理想的なガスケットの一つと考えられている。特に、フ
ィラー材に膨張黒鉛テープを用いたものはフランジとの
馴染みが良く接面からの漏れを少なくできるため、ガス
シール性の優れたガスケットとして知られている。The spiral gasket has a structure in which a substantially V-shaped metal hoop material and a filler material having a cushioning property are alternately stacked and wound, so that the gasket is rich in elasticity.
Excellent sealing performance because it can respond to expansion and contraction due to heat.
It is considered one of the ideal gaskets. In particular, a gasket using an expanded graphite tape as a filler material is known as a gasket having excellent gas sealing properties since it is well-fitted to a flange and can reduce leakage from a contact surface.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、このよ
うな膨張黒鉛テープをフィラー材として用いた渦巻形ガ
スケットは非酸化性雰囲気では８００℃程度まで使用で
きるが、酸化性雰囲気では膨張黒鉛が酸化されるため５
００℃以上では使用することができない。このため、リ
ン酸またはリン酸塩で処理して耐酸化性を高めた膨張黒
鉛のフィラー材を使用する方法が提案されているが、耐
熱性を５０〜１００℃以上に上げることはできない。However, a spiral gasket using such an expanded graphite tape as a filler material can be used up to about 800 ° C. in a non-oxidizing atmosphere, but expandable graphite is oxidized in an oxidizing atmosphere. For 5
It cannot be used above 00 ° C. For this reason, there has been proposed a method of using an expanded graphite filler material which has been treated with phosphoric acid or phosphate to increase oxidation resistance, but the heat resistance cannot be increased to 50 to 100 ° C. or higher.
【０００６】また、従来よりフィラー材として膨張黒鉛
テープを渦巻形ガスケットの中央部分に、石綿テープや
ＮＡテープを内周部分や外周部分に配置して、膨張黒鉛
テープの酸化を防止する方法も良く知られているが、６
００℃以上の高温の酸化性雰囲気中では石綿テープやＮ
Ａテープ中の有機バインダーが消失して締付面圧が低下
することにより膨張黒鉛が酸化され、長期間にわたり完
全にガスをシールすることはできない。Conventionally, a method of preventing the oxidation of the expanded graphite tape by arranging an expanded graphite tape as a filler material at the center of the spiral gasket and an asbestos tape or NA tape at the inner and outer circumferences thereof is also good. Known, but 6
Asbestos tape or N
The exfoliated graphite is oxidized due to the loss of the organic binder in the A tape and the decrease in the tightening surface pressure, and the gas cannot be completely sealed for a long period of time.
【０００７】本発明は、以上の点を鑑みてなされたもの
で、膨張黒鉛テープの酸化消失を防止して高温の酸化性
雰囲気下でもガスシール性が良好となる渦巻形ガスケッ
トを提供することを目的としている。The present invention has been made in view of the above points, and it is an object of the present invention to provide a spiral-type gasket which prevents oxidation and disappearance of an expanded graphite tape and provides good gas sealing even under a high-temperature oxidizing atmosphere. The purpose is.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するた
め、請求項１の発明は、断面を略Ｖ字形としたテープ状
の金属製フープ材とフィラー材を重ね合わせて渦巻形に
巻回して構成する渦巻形ガスケットにおいて、前記フィ
ラー材のうち内周部分と外周部分が補強材で補強された
有機物量が５％以下のマイカテープからなり、中央部分
が膨張黒鉛テープからなることを要旨とする。In order to achieve the above object, a first aspect of the present invention is to provide a tape-shaped metal hoop material having a substantially V-shaped cross section and a filler material which are superposed and spirally wound. In the convoluted gasket, the inner and outer peripheral portions of the filler material are made of a mica tape having an organic matter amount of 5% or less reinforced with a reinforcing material, and the central portion is made of an expanded graphite tape. .
【０００９】請求項２の発明は、請求項１の発明の渦巻
形ガスケットにおいて、前記フィラー材のなかの膨張黒
鉛テープの体積含有率が５０％から８０％であることを
要旨とする。A second aspect of the present invention is the spiral gasket of the first aspect, wherein the volume content of the expanded graphite tape in the filler material is 50% to 80%.
【００１０】請求項３の発明は、請求項１または請求項
２の発明の渦巻形ガスケットにおいて、前記フィラー材
のなかのマイカテープのはみ出し量が膨張黒鉛テープに
対して０．１ｍｍ〜０．４ｍｍ、フープ材に対して０．
４ｍｍ〜０．８ｍｍであることを要旨とする。According to a third aspect of the present invention, in the spiral gasket of the first or second aspect of the present invention, the amount of the mica tape protruding from the filler material is 0.1 mm to 0.4 mm with respect to the expanded graphite tape. , 0 for hoop material
The gist is to be 4 mm to 0.8 mm.
【００１１】請求項４の発明は、請求項１〜３のいずれ
かの発明の渦巻形ガスケットにおいて、補強材で補強さ
れた有機物量が５％以下のマイカテープが、マイカ箔を
集成したマイカペーパーに無機質繊維から構成されるク
ロスを接着したものであることを要旨とする。According to a fourth aspect of the present invention, there is provided the spiral gasket according to any one of the first to third aspects, wherein the mica tape reinforced with a reinforcing material and having an organic content of 5% or less is a mica paper in which mica foil is assembled. The gist of the present invention is that a cloth made of inorganic fibers is adhered to the cloth.
【００１２】[0012]
【発明の実施の形態】本発明の実施の形態としては、例
えば図１〜図３に示すように、金属製フープ材２とフィ
ラー材３とを重ね合わせて渦巻状に巻回して構成する渦
巻形ガスケット１において、フィラー材３のうち内周部
分３ａと外周部分３ｃのフィラー材３がマイカ箔を集成
したマイカペーパー７に無機質繊維から構成される無機
繊維クロス８を接着して補強した有機物量４％のマイカ
テープ６からなり、中央部分３ｂは膨張黒鉛テープ９か
らなっており、さらにフィラー材３における膨張黒鉛テ
ープ９の体積含有率が５０％から８０％の範囲内で、フ
ィラー材３のなかのマイカテープ６のフープ材からのは
み出し量ｈ１が０．６ｍｍであり、膨張黒鉛テープ９か
らのはみ出し量ｈ２が０．３ｍｍとなっている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As an embodiment of the present invention, as shown in FIGS. 1 to 3, for example, a spiral formed by superposing a metal hoop material 2 and a filler material 3 and winding them in a spiral shape. In the shaped gasket 1, the amount of organic matter in which the filler material 3 of the inner peripheral portion 3a and the outer peripheral portion 3c of the filler material 3 is bonded to a mica paper 7 in which mica foil is assembled and an inorganic fiber cloth 8 composed of inorganic fibers is bonded and reinforced The central portion 3b is made of an expanded graphite tape 9, and the volume content of the expanded graphite tape 9 in the filler material 3 is within a range of 50% to 80%. The amount h1 of protrusion of the mica tape 6 from the hoop material is 0.6 mm, and the amount h2 of protrusion from the expanded graphite tape 9 is 0.3 mm.
【００１３】前記構成によれば、フィラー材３として中
央部分３ｂにシール性の良い膨張黒鉛テープ９を用い、
この膨張黒鉛の高温における酸化を抑制するために、内
周部分３ａと外周部分３ｃに有機物量の少ない無機クロ
スで補強されたマイカ箔を使用しているので、高温の酸
化性雰囲気においても、内周部分３ａと外周部分３ｃの
有機物の消失による締付面圧の低下があまりないため、
内周部分３ａと外周部分３ｃからの酸素の透過を著しく
減少させ、膨張黒鉛の酸化を防止することよって高いシ
ール性が維持される。According to the above construction, the expanded graphite tape 9 having good sealing properties is used for the central portion 3b as the filler material 3,
In order to suppress the oxidation of the expanded graphite at a high temperature, mica foil reinforced with an inorganic cloth having a small amount of organic material is used for the inner peripheral portion 3a and the outer peripheral portion 3c. Since there is not much decrease in the tightening surface pressure due to the disappearance of the organic matter in the peripheral portion 3a and the peripheral portion 3c,
The permeation of oxygen from the inner peripheral portion 3a and the outer peripheral portion 3c is remarkably reduced, and high sealing property is maintained by preventing oxidation of the expanded graphite.
【００１４】この場合、膨張黒鉛テープ９の体積含有率
が５０％よりも小さいと膨張黒鉛テープ９の中央部分３
ｂが小さくなり膨張黒鉛の優れたガスシール性を発揮で
きず、また体積含有率が８０％より大きいと内周部分３
ａと外周部分３ｃのマイカテープ６の層が薄くなり透過
してくる酸素の量が多くなり、膨張黒鉛テープ９の酸化
を十分に防止することができないので、高温の酸化性雰
囲気下でのシール性が低下すること、また、マイカテー
プ６の有機物量が５％を越えると、高温で有機物量の減
量による締付面圧の低下が起こり、シール性が低下する
こと、さらにマイカテープ６は膨張黒鉛より硬いため、
はみ出し量がフープ材２に対して０．８ｍｍより大きい
ときや膨張黒鉛テープ９に対して０．４ｍｍより大きい
ときは、フランジ接面への馴染みが良くなく、逆にはみ
出し量がフープ材２に対して０．４ｍｍより小さいとき
や膨張黒鉛テープ９に対して０．１ｍｍより小さいとき
は、内周部分３ａと外周部分３ｃに加わる面圧が中央部
分３ｂの面圧より小さくなりシール性が低下すること
が、種々の実験により判明している。In this case, if the volume content of the expanded graphite tape 9 is less than 50%, the central portion 3
b becomes small, so that the excellent gas sealing property of the expanded graphite cannot be exhibited.
a and the layer of the mica tape 6 in the outer peripheral portion 3c becomes thinner and the amount of permeated oxygen increases, and the oxidation of the expanded graphite tape 9 cannot be sufficiently prevented. When the amount of organic matter in the mica tape 6 exceeds 5%, the tightening surface pressure decreases due to a decrease in the amount of organic matter at a high temperature, and the sealing property decreases, and the mica tape 6 expands. Because it is harder than graphite,
When the protrusion amount is larger than 0.8 mm with respect to the hoop material 2 or when the protrusion amount is larger than 0.4 mm with respect to the expanded graphite tape 9, the fitting to the flange contact surface is not good. On the other hand, when it is smaller than 0.4 mm or smaller than 0.1 mm with respect to the expanded graphite tape 9, the surface pressure applied to the inner peripheral portion 3a and the outer peripheral portion 3c becomes smaller than the surface pressure of the central portion 3b, and the sealing property is deteriorated. Has been found by various experiments.
【００１５】本発明者等は、上記実験によって得られた
知見に基づき、高温の酸化性雰囲気下でもシール性を良
好にするフィラー材３全体における膨張黒鉛テープ９の
体積含有率およびマイカテープの有機物量ならびにフィ
ラー材３のマイカテープ６のフープ材２からのはみ出し
量や膨張黒鉛テープ９からのはみ出し量の範囲を明らか
にし、本発明を完成したものである。なお、本発明の膨
張黒鉛テープには、通常品に加えて耐熱性の高いリン酸
またはリン酸塩含有膨張黒鉛テープが含まれることは言
うまでもない。On the basis of the findings obtained by the above experiments, the present inventors have found that the volume content of the expanded graphite tape 9 and the organic matter of the mica tape in the entire filler material 3 for improving the sealing property even in a high-temperature oxidizing atmosphere. The present invention was completed by clarifying the amount of the filler material 3 and the range of the amount of the mica tape 6 protruding from the hoop material 2 and the amount of the filler material 3 protruding from the expanded graphite tape 9. Needless to say, the expanded graphite tape of the present invention includes, in addition to a normal product, an expanded graphite tape containing phosphoric acid or phosphate having high heat resistance.
【００１６】[0016]
【実施例】次に本発明の実施例により更に詳しく説明す
るが、本発明はこれに限定されるものではない。Next, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto.
【００１７】実施例 実施例は、ＪＩＳ３０Ｋ、８０Ａサイズの内外輪付渦巻
形ガスケットで、図１に平面図を、図２に横断面図を示
す。厚さ０．２ｍｍ、幅５．４ｍｍのＳＵＳ３１６製テ
ープ状薄板のフープ材２を略Ｖ字状に絞り加工した後、
ＳＵＳ３１６製内輪４の外周部にスポット溶接し、フー
プ材２だけを４周巻いた後、フィラー材として厚さ０．
２ｍｍ、幅６．６ｍｍのマイカテープ６をはさみ互いに
重ね合わせて４周巻回して内周部分３ａを形成し、その
後厚さ０．３８ｍｍ、幅６．２ｍｍの膨張黒鉛テープ９
に換えて同様に９周巻回して中央部分３ｂを形成し、そ
の後再度マイカテープ６に換えて同様に４周巻回して外
周部分３ｃを形成し、最後にフープ材２のみを４周空巻
し、巻始めと同様に点溶接し、ＳＵＳ３１６製外輪５を
装着して構成している。ここで、前記マイカテープ６
は、図３に示すように、（株）日本マイカ製作所製のマ
イカ箔を集成したマイカペーパー７にガラス繊維から構
成されるクロス８を接着して補強した有機物量４％のも
のであり、膨張黒鉛テープ９は耐熱性の良いＣＡＲ社製
のリン酸塩含有膨張黒鉛テープＧＴＫを用いている。こ
のとき、フィラー材３全体における膨張黒鉛テープ９の
体積含有率は約６６％、内周部分３ａと外周部分３ｃの
マイカテープ６のフープ材２からのはみ出し量ｈ１は
０．６ｍｍ、膨張黒鉛テープからのはみ出し量ｈ２は
０．３ｍｍとなっている。Embodiment The embodiment is a spiral gasket with inner and outer rings of JIS 30K, 80A size, and FIG. 1 is a plan view and FIG. 2 is a cross sectional view. After drawing a hoop material 2 of a SUS316 tape-shaped thin plate having a thickness of 0.2 mm and a width of 5.4 mm into a substantially V-shape,
Spot welding is performed on the outer peripheral portion of the inner ring 4 made of SUS316, and the hoop material 2 alone is wound four times.
A mica tape 6 having a width of 2 mm and a width of 6.6 mm is sandwiched therebetween and wound around four times to form an inner peripheral portion 3a, and then an expanded graphite tape 9 having a thickness of 0.38 mm and a width of 6.2 mm 9
In the same manner, the central portion 3b is formed by wrapping 9 times, and then the mica tape 6 is again formed and wrapped 4 times in the same manner to form the outer peripheral portion 3c. Then, the outer ring 5 made of SUS316 is mounted by spot welding in the same manner as at the beginning of winding. Here, the mica tape 6
As shown in FIG. 3, a mica paper 7 made of Nippon Mica Seisakusho Co., Ltd. is a mica paper 7 and a cloth 8 made of glass fiber is adhered to the mica paper 7 to reinforce the organic material with a 4% organic matter content. As the graphite tape 9, a phosphate-containing expanded graphite tape GTK manufactured by CAR with good heat resistance is used. At this time, the volume content of the expanded graphite tape 9 in the entire filler material 3 is about 66%, the protruding amount h1 of the mica tape 6 from the hoop material 2 of the inner peripheral portion 3a and the outer peripheral portion 3c is 0.6 mm, and the expanded graphite tape 9 The amount h2 of protrusion from the protrusion is 0.3 mm.
【００１８】比較例 比較例は、実施例のフィラー材としてマイカテープ６の
代わりに、厚さ０．４ｍｍ、幅６．６ｍｍの従来から用
いている有機物量４％の無機質フィラーを使用して内周
部分３ａの巻数を４巻に、外周部分３ｃの巻数も４巻に
し、中央部分３ｂの膨張黒鉛テープ９の巻数を５巻に変
更したものである。このとき、フィラー材３全体におけ
る膨張黒鉛テープ９の体積含有率は約３６％となってい
る。Comparative Example In the comparative example, an inorganic filler having a thickness of 0.4 mm and a width of 6.6 mm and a conventionally used organic material amount of 4% was used instead of the mica tape 6 as the filler material of the embodiment. The number of turns of the peripheral portion 3a is four, the number of turns of the outer peripheral portion 3c is four, and the number of turns of the expanded graphite tape 9 in the central portion 3b is five. At this time, the volume content of the expanded graphite tape 9 in the entire filler material 3 is about 36%.
【００１９】実施例、比較例の加熱後のシール性の結果
を下記表１に示す。ただし、シール性は実際のＪＩＳ３
０Ｋ、８０Ａ、ＲＦフランジに面圧８００kgf／cm2では
さみ６００℃で、３時間加熱後にＮ2ガス３０．０kgf／
cm2Ｇを負荷し、１０分間の漏洩を水上置換法で捕集し
たガスの量で表示した。表１から、実施例の漏洩量は比
較例に比べ、加熱後のシール性に優れていることが判
る。Table 1 below shows the results of the sealing properties after heating in the examples and comparative examples. However, the sealability is based on actual JIS3
0K, 80A, RF flange with a surface pressure of 800 kgf / cm 2 , heated at 600 ° C. for 3 hours, and N 2 gas 30.0 kgf / cm 2
cm 2 G was loaded, and the leak for 10 minutes was indicated by the amount of gas collected by the water displacement method. From Table 1, it can be seen that the leakage amount of the example is superior to the comparative example in the sealing property after heating.
【００２０】[0020]
【表１】 [Table 1]
【００２１】[0021]
【発明の効果】以上の説明から明らかなように、本発明
による渦巻形ガスケットは、膨張黒鉛テープの酸化消失
を防止して高温の酸化性雰囲気下で良好なガスシール性
を得られる。As is apparent from the above description, the spiral gasket according to the present invention can prevent the disappearance of oxidation of the expanded graphite tape and obtain good gas sealing properties under a high-temperature oxidizing atmosphere.
【図１】本発明の実施例を示す渦巻形ガスケットの平面
図である。FIG. 1 is a plan view of a spiral gasket showing an embodiment of the present invention.
【図２】図１のＡ−Ａ線の断面図である。FIG. 2 is a sectional view taken along line AA of FIG. 1;
【図３】本発明のフィラー材のマイカ箔を集成したマイ
カペーパーにガラス繊維から構成されるクロスを接着し
て補強したマイカテープの拡大断面図である。FIG. 3 is an enlarged cross-sectional view of a mica tape reinforced by bonding a cloth made of glass fiber to mica paper in which mica foil of a filler material of the present invention is assembled.
【符号の説明】 １ 渦巻形ガスケット ２ フープ材 ３ フィラー材 ３ａ フィラー材の内周部分 ３ｂ フィラー材の中央部分 ３ｃ フィラー材の外周部分 ４ 内輪 ５ 外輪 ６ マイカテープ ７ マイカペーパー ８ クロス ９ 膨張黒鉛テープ[Description of Signs] 1 Spiral gasket 2 Hoop material 3 Filler material 3a Inner peripheral portion of filler material 3b Central portion of filler material 3c Outer peripheral portion of filler material 4 Inner ring 5 Outer ring 6 Mica tape 7 Mica paper 8 Cross 9 Expansion graphite tape
Claims (4)
フープ材とフィラー材を重ね合わせて渦巻形に巻回して
構成する渦巻形ガスケットにおいて、前記フィラー材の
うち内周部分と外周部分が補強材で補強された有機物量
が５％以下のマイカテープからなり、中央部分が膨張黒
鉛テープからなることを特徴とする渦巻形ガスケット。1. A spiral gasket comprising a tape-shaped metal hoop material having a substantially V-shaped cross section and a filler material superposed and spirally wound, wherein an inner peripheral portion and an outer peripheral portion of the filler material are provided. A spiral gasket comprising a mica tape reinforced with a reinforcing material and having an organic matter content of 5% or less, and a central portion formed of an expanded graphite tape.
ィラー材のなかの膨張黒鉛テープの体積含有率が５０％
から８０％であることを特徴とする請求項１に記載の渦
巻形ガスケット。2. The spiral gasket according to claim 1, wherein a volume content of the expanded graphite tape in the filler material is 50%.
The spiral gasket according to claim 1, wherein
ィラー材のなかのマイカテープのはみ出し量が膨張黒鉛
テープに対して０．１ｍｍ〜０．４ｍｍ、フープ材に対
して０．４ｍｍ〜０．８ｍｍであることを特徴とする請
求項１または請求項２に記載の渦巻形ガスケット。3. The spiral gasket according to claim 1, wherein an amount of the mica tape protruding from the filler material is 0.1 mm to 0.4 mm with respect to the expanded graphite tape and 0.4 mm to 0.8 mm with respect to the hoop material. The spiral gasket according to claim 1, wherein the gasket is a spiral gasket.
で補強された有機物量が５％以下のマイカテープが、マ
イカ箔を集成したマイカペーパーに無機質繊維から構成
されるクロスを接着したものであることを特徴とする請
求項１〜３のいずれかに記載の渦巻形ガスケット。4. The spiral gasket, wherein a mica tape reinforced with a reinforcing material and having an organic matter amount of 5% or less is obtained by bonding a cloth composed of inorganic fibers to mica paper in which mica foil is assembled. The spiral gasket according to any one of claims 1 to 3, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17395198A JP3310619B2 (en) | 1998-06-05 | 1998-06-05 | Spiral gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17395198A JP3310619B2 (en) | 1998-06-05 | 1998-06-05 | Spiral gasket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11351399A true JPH11351399A (en) | 1999-12-24 |
| JP3310619B2 JP3310619B2 (en) | 2002-08-05 |
Family
ID=15970092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17395198A Expired - Lifetime JP3310619B2 (en) | 1998-06-05 | 1998-06-05 | Spiral gasket |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3310619B2 (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007127178A (en) * | 2005-11-02 | 2007-05-24 | Nippon Valqua Ind Ltd | Spiral type gasket |
| JP2011075095A (en) * | 2009-10-02 | 2011-04-14 | Nichias Corp | Spiral gasket |
| JP2012219939A (en) * | 2011-04-11 | 2012-11-12 | Nichias Corp | Spiral wound gasket |
| JP2012219938A (en) * | 2011-04-11 | 2012-11-12 | Nichias Corp | Spiral wound gasket |
| JP2012219937A (en) * | 2011-04-11 | 2012-11-12 | Nichias Corp | Spiral wound gasket |
| JP2012255465A (en) * | 2011-06-08 | 2012-12-27 | Nichias Corp | Spiral gasket |
| WO2014007364A1 (en) | 2012-07-06 | 2014-01-09 | 株式会社 東芝 | Spiral gasket |
| US8647744B2 (en) | 2006-04-05 | 2014-02-11 | National Institute Of Advanced Industrial Science And Technology | Graphite clay composite material, process for producing the same, gasket or packing comprising the composite material, and clay dispersion used for the composite material |
| CN104074975A (en) * | 2014-06-13 | 2014-10-01 | 慈溪市恒立密封材料有限公司 | Low-stress efficient sealing gasket and manufacturing method thereof |
| KR20170077755A (en) * | 2015-12-28 | 2017-07-06 | 닛폰 바루카 고교 가부시키가이샤 | Spiral wound gasket |
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| CN105531341B (en) | 2013-08-01 | 2018-03-16 | 霓佳斯株式会社 | The thin slice and its manufacture method being made up of laminar clay mineral |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007127178A (en) * | 2005-11-02 | 2007-05-24 | Nippon Valqua Ind Ltd | Spiral type gasket |
| US8647744B2 (en) | 2006-04-05 | 2014-02-11 | National Institute Of Advanced Industrial Science And Technology | Graphite clay composite material, process for producing the same, gasket or packing comprising the composite material, and clay dispersion used for the composite material |
| JP2011075095A (en) * | 2009-10-02 | 2011-04-14 | Nichias Corp | Spiral gasket |
| JP2012219939A (en) * | 2011-04-11 | 2012-11-12 | Nichias Corp | Spiral wound gasket |
| JP2012219938A (en) * | 2011-04-11 | 2012-11-12 | Nichias Corp | Spiral wound gasket |
| JP2012219937A (en) * | 2011-04-11 | 2012-11-12 | Nichias Corp | Spiral wound gasket |
| JP2012255465A (en) * | 2011-06-08 | 2012-12-27 | Nichias Corp | Spiral gasket |
| WO2014007364A1 (en) | 2012-07-06 | 2014-01-09 | 株式会社 東芝 | Spiral gasket |
| JPWO2014007364A1 (en) * | 2012-07-06 | 2016-06-02 | 株式会社東芝 | Spiral wound gasket |
| CN104074975A (en) * | 2014-06-13 | 2014-10-01 | 慈溪市恒立密封材料有限公司 | Low-stress efficient sealing gasket and manufacturing method thereof |
| KR20170077755A (en) * | 2015-12-28 | 2017-07-06 | 닛폰 바루카 고교 가부시키가이샤 | Spiral wound gasket |
| CN110788333A (en) * | 2019-11-23 | 2020-02-14 | 无锡市金属垫片有限公司 | Production process of metal winding gasket and metal winding gasket |
| CN110788333B (en) * | 2019-11-23 | 2021-08-03 | 无锡市金属垫片有限公司 | Production process of metal winding gasket and metal winding gasket |
Also Published As
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|---|---|
| JP3310619B2 (en) | 2002-08-05 |
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