JPS6212422B2 - - Google Patents
Info
- Publication number
- JPS6212422B2 JPS6212422B2 JP56045860A JP4586081A JPS6212422B2 JP S6212422 B2 JPS6212422 B2 JP S6212422B2 JP 56045860 A JP56045860 A JP 56045860A JP 4586081 A JP4586081 A JP 4586081A JP S6212422 B2 JPS6212422 B2 JP S6212422B2
- Authority
- JP
- Japan
- Prior art keywords
- core
- braided
- packing
- fluororesin
- lubricant
- 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
Links
- 239000011162 core material Substances 0.000 claims description 30
- 238000012856 packing Methods 0.000 claims description 21
- 239000000314 lubricant Substances 0.000 claims description 13
- 229920013716 polyethylene resin Polymers 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000011247 coating layer Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 3
- 239000010425 asbestos Substances 0.000 claims description 2
- 229910052895 riebeckite Inorganic materials 0.000 claims description 2
- 238000007789 sealing Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001111 Fine metal Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/18—Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
- F16J15/20—Packing materials therefor
- F16J15/22—Packing materials therefor shaped as strands, ropes, threads, ribbons, or the like
Description
【発明の詳細な説明】
本発明は、流体を密封するパツキンに係り、特
に、薬品用タンク蓋やLNG船などの船舶のハツ
チカバー等の如く、締付圧力が充分得られない蓋
用の密封部材として好適なパツキン（ガスケツ
ト）に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gasket for sealing fluid, and in particular, a sealing member for lids where sufficient tightening pressure cannot be obtained, such as chemical tank lids and hatch covers for ships such as LNG carriers. The present invention relates to a gasket suitable for use as a gasket.
従来、この種のパツキン・ガスケツト類は、ゴ
ム材料を主体としたもの、種々の繊維材料の集合
体からなるもの等を用いられていたが、耐候性や
耐腐食性において不充分であり、長期間にわたり
密封機能を維持することは困難であつた。また従
来のものでは、概して硬質であり、締付不足の関
係から密封という本来の機能において非常に問題
があつた。つまり、この種のパツキン等が装着さ
れる機器側の蓋構造が、通常のパツキン・ガスケ
ツトに必要な複数本のボルト・ナツト等による締
付構造となつておらず、充分な締付圧力が得られ
ないことと従来のパツキン等が概して硬質であつ
たことが相俟つて前述のような困難な問題をまね
いていた。 Conventionally, this type of gaskets and gaskets were mainly made of rubber or made of aggregates of various fiber materials, but these were insufficient in terms of weather resistance and corrosion resistance, and did not last long. It was difficult to maintain the sealing function over a period of time. In addition, conventional seals are generally hard and have problems in their original function of sealing due to insufficient tightening. In other words, the lid structure on the equipment side to which this type of gasket is installed does not have a tightening structure using multiple bolts and nuts that is required for normal gaskets and gaskets, and sufficient tightening pressure cannot be obtained. The combination of the fact that the seals were difficult to absorb and the conventional gaskets were generally hard led to the above-mentioned difficult problems.
本発明は係る事情に鑑みなされたもので、低い
締付圧力でも、充分に密封可能なパツキン（ガス
ケツト）を提供するものである。即ち、本発明は
独立気泡を有する発泡ポリエチレン樹脂からなる
紐状中芯材を複数本でもつて撚り合せて中芯とな
し、該中芯の周囲に弗素樹脂繊維からなる編組糸
の編組体にて形成せしめると共に該編組体へ弗素
樹脂粒子からなる潤滑剤を含有させてなるパツキ
ンを第１発明の要旨とするものであり、また第２
発明として独立気泡を有する発泡ポリエチレン樹
脂からなる板状中芯材を複数枚でもつて積層して
中芯となし、該中芯の周囲に弗素樹脂テープまた
は金属細線交絡体の少なくとも一方からなる中間
被覆層を設け、さらに石線繊維からなる編組糸の
編組体にて形成せしめると共に該編組体へ弗素樹
脂粒子からなる潤滑剤を含有させてなるパツキン
を要旨とするものである。 The present invention was made in view of the above circumstances, and it is an object of the present invention to provide a packing (gasket) that can be sufficiently sealed even with low tightening pressure. That is, in the present invention, a plurality of string-like core materials made of foamed polyethylene resin having closed cells are twisted together to form a core, and a braided body of braided threads made of fluororesin fibers is wrapped around the core. The first aspect of the invention provides a packing comprising a lubricant made of fluororesin particles contained in the braided body.
As an invention, a plurality of plate-shaped core materials made of foamed polyethylene resin having closed cells are laminated to form a core, and an intermediate coating made of at least one of a fluororesin tape or a tangled metal wire is provided around the core. The gist of the present invention is to provide a packing comprising a layer, a braided body of a braided yarn made of stone wire fibers, and a lubricant made of fluororesin particles contained in the braided body.
以下、本発明を詳細に説明する。 The present invention will be explained in detail below.
第１図と第２図は、本発明に係る好適なパツキ
ンの実施例図である。第１図において、パツキン
Ａは、中芯１の周囲に編組糸２にて丸編した編組
体３へ潤滑剤４を含有させた構成となすものであ
る。この中芯１には、独立気泡を有する発泡ポリ
エチレン樹脂を用いるものである。この独立気泡
を有する発泡ポリエチレン樹脂とは、個々の気泡
が密閉の空室構造となつており、吸水性や毛細管
現象がほとんどない特別な発泡ポリエチレン樹脂
を用いた。第１図の実施例では、この樹脂を紐状
中芯材として複数本でもつて撚り合せたものを中
芯１となした。また第２図に示したパツキンＢの
中芯１′は、前記独立気泡を有する発泡ポリエチ
レン樹脂からなる板状中芯材を複数枚でもつて積
層した状態にしたものである。そして、この中芯
１の周囲に編組される編組糸２として、弗素樹脂
繊維を用い、潤滑剤４として弗素樹脂粒子を用い
た。 FIGS. 1 and 2 are illustrations of preferred embodiments of the packing according to the present invention. In FIG. 1, the packing A has a structure in which a lubricant 4 is contained in a braided body 3 which is circularly knitted with a braided thread 2 around a core 1. This core 1 is made of foamed polyethylene resin having closed cells. This foamed polyethylene resin having closed cells is a special foamed polyethylene resin in which each cell has a closed chamber structure and has almost no water absorption or capillary phenomenon. In the embodiment shown in FIG. 1, the core 1 is made by twisting a plurality of pieces of this resin as a string-like core material. The center core 1' of the packing B shown in FIG. 2 is made by laminating a plurality of plate-shaped core materials made of the foamed polyethylene resin having closed cells. As the braided yarn 2 braided around the core 1, fluororesin fibers were used, and as the lubricant 4, fluororesin particles were used.
また第２図で示したパツキンＢの中芯１′には
前述した如く、独立気泡を有する発泡ポリエチレ
ン樹脂の板状を数本積層したものを用いた。そし
てこの中芯１′の周囲に弗素樹脂テープからなる
中間被覆層５を設け、この上にさらに石綿繊維か
らなる編組糸２′の編組体３′を形成し、弗素樹脂
粒子からなる潤滑剤４′を編組体３′へ含有した構
成となすものである。 As described above, the center core 1' of the packing B shown in FIG. 2 was made of a stack of several plates of foamed polyethylene resin having closed cells. Then, an intermediate covering layer 5 made of a fluororesin tape is provided around the core 1', a braided body 3' of a braided thread 2' made of asbestos fibers is further formed on this layer, and a lubricant 4 made of fluororesin particles is formed. ' is included in the braided body 3'.
なお編組糸２，２′によつて得られる編組体
３，３′は、滑らかな表面に編むことの出来る丸
編みが好ましいが、使用目的に応じた編み手段で
もよく、例えば外編みでもよい。また第２図で示
したパツキンＢの中間被覆層５を設けた目的は、
耐薬品性の一層の向上と、補強効果を高めたもの
である。なお、パツキンＢに示した中間被覆層５
としては、前述の弗素樹脂テープの他に、例え
ば、強度とより一層の弾性をパツキンに付加する
ときは、ニツト編された金属細線の交絡体を用い
ることが好ましく、また前述の素材を併用した、
即ち、中芯のまわりに弗素樹脂テープを巻き、そ
の外面に金属細線の交絡体を設けたものを中間被
覆層５としてもよい。さらに編組体３，３′へ含
有される潤滑剤４，４′は、編組体３，３′に分散
介在させているが、この手段としては、編組糸
２，２′によつて編まれた編組体３，３′を形成し
た後に潤滑剤４，４′を含浸させてもよいが、他
の手段として、潤滑剤４，４′を予め編組糸２，
２′の中へ含有しておいてから、編組体３，３′を
形成させることもできる。そしてこの潤滑剤４，
４′を用いる目的は、概してパツキン装着部分の
機器（タンク等）側の表面粗度が粗いときや錆び
ついていることが多く、このような場合、パツキ
ン自体に滑らかさを付与するためと、機器側表面
の凹凸を埋めて密封性を高めるためである。 It should be noted that the braided bodies 3, 3' obtained by the braided yarns 2, 2' are preferably circular knitted because they can be knitted to a smooth surface, but may be knitted by any means depending on the purpose of use, such as outer knitting. Moreover, the purpose of providing the intermediate coating layer 5 of the packing B shown in FIG.
It has further improved chemical resistance and enhanced reinforcing effect. In addition, the intermediate coating layer 5 shown in packing B
In addition to the above-mentioned fluororesin tape, for example, when adding strength and further elasticity to the packing, it is preferable to use an entangled body of knitted fine metal wires. ,
That is, the intermediate coating layer 5 may be formed by wrapping a fluororesin tape around a core and providing an intertwined body of thin metal wires on the outer surface of the tape. Furthermore, the lubricants 4, 4' contained in the braided bodies 3, 3' are dispersed in the braided bodies 3, 3'. The lubricant 4, 4' may be impregnated after the braided bodies 3, 3' are formed, but as another method, the lubricant 4, 4' may be applied to the braided threads 2, 4' in advance.
It is also possible to form the braided bodies 3, 3' after incorporating it into the braided body 2'. And this lubricant 4,
The purpose of using 4' is generally when the surface of the equipment (tank, etc.) to which the gasket is attached is rough or rusted, and in such cases, it is used to add smoothness to the gasket itself, and to clean the equipment (tank, etc.). This is to fill in the unevenness of the side surface and improve the sealing performance.
さらに、特に、タンクの蓋部分のパツキン装着
部が悪い場合、パツキンの表面保護と、密封性向
上をさせる手段として、第３図に示したように、
編組体３，３′のまわりに、弗素樹脂の生テープ
６を巻いてなる構成を必要に応じ、なすことも出
来る。 Furthermore, especially if the gasket attachment part of the tank lid is bad, as a means to protect the surface of the gasket and improve its sealing performance, as shown in Figure 3,
If necessary, a structure in which raw tape 6 of fluororesin is wrapped around the braided bodies 3, 3' can be made.
以上詳述した構成となす本発明に係るパツキン
は、中芯に用いた発泡ポリエチレン樹脂の独立気
泡によつて、独立気泡内の空気のバネ作用によ
り、優れた緩衝性を示すだけでなく、流体に対し
不浸透であり、しかも該樹脂からなる紐状中芯材
を複数本でもつて撚り合せた中芯構成或いは該樹
脂からなる板状中芯材を複数枚でもつて積層した
中芯構成となしているため、中芯構造による構造
的バネ作用をも付与され、中芯を包囲する編組
体、潤滑剤等と相俟つて、パツキン、ガスケツト
分野のこれまでの常識では考えられない軽微な低
締付圧力にて、完全な密封機能を発揮した。 The packing according to the present invention having the structure described in detail above not only exhibits excellent cushioning properties due to the closed cells of the foamed polyethylene resin used in the core, but also has excellent cushioning properties due to the spring action of the air within the closed cells. It is impermeable to water, and has a core structure in which a plurality of string-like core materials made of the resin are twisted together, or a core structure in which a plurality of plate-like core materials made of the resin are laminated. Because of this, the core structure provides a structural spring effect, and together with the braided body surrounding the core, lubricant, etc., it is possible to achieve slight low tightening that is unimaginable under the conventional wisdom in the packing and gasket fields. Demonstrated perfect sealing function under applied pressure.
第４図は、前述のパツキンＡとパツキンＢおよ
び従来品としての他社のゴム主体パツキンＣを比
較実験した「洩れ量対締付荷重」の関係を示すグ
ラフであり、縦軸に漏洩量（単位：c.c.／min）、
横軸に締付面圧力（単位：Kg／cm2）をとり、実験
条件として、流体：空気、流体圧力：0.15Kg／
cm2、Ａ，Ｂ，Ｃの各パツキン寸法（単位：mm）：
φ440×φ520×40tにて行なつた結果を示すもの
である。 Figure 4 is a graph showing the relationship between "leakage amount and tightening load" obtained through a comparative experiment between the aforementioned packing A and packing B, and the conventional rubber-based packing C from another company.The vertical axis shows the leakage amount (unit: :cc/min),
The horizontal axis shows the tightening surface pressure (unit: Kg/cm 2 ), and the experimental conditions were: fluid: air, fluid pressure: 0.15Kg/
cm 2 , A, B, C packing dimensions (unit: mm):
This shows the results obtained using φ440×φ520×40t.
第１図と第２図は何れも本発明に係る実施例を
示すパツキンの要部断面斜視図、第３図は本発明
に係る他の態様を示すパツキン斜視図、第４図は
「洩れ量対締付荷重」の関係を示す比較実験のグ
ラフである。
Ａ，Ｂ，Ｃ…パツキン、１，１′…中芯、２，
２′…編組糸、３，３′…編組体、４，４′…潤滑
剤、５…中間被覆層、６…生テープ。
1 and 2 are both perspective cross-sectional views of essential parts of a packing showing an embodiment of the present invention, FIG. 3 is a perspective view of a packing showing another aspect of the present invention, and FIG. 4 is a "leakage amount". 2 is a graph of a comparative experiment showing the relationship between "tightening load and tightening load." A, B, C... Packing, 1, 1'... Core, 2,
2'... Braided yarn, 3, 3'... Braided body, 4, 4'... Lubricant, 5... Intermediate coating layer, 6... Raw tape.
Claims (1)
なる紐状中芯材を複数本でもつて撚り合せて中芯
となし、該中芯の周囲に弗素樹脂繊維からなる編
組糸の編組体にて形成せしめると共に該編組体へ
弗素樹脂粒子からなる潤滑剤を含有させてなるパ
ツキン。 ２ 独立気泡を有する発泡ポリエチレン樹脂から
なる板状中芯材を複数板でもつて積層して中芯と
なし、該中芯の周囲に弗素樹脂テープまたは金属
細線交絡体の少なくとも一方からなる中間被覆層
を設け、さらに石綿繊維からなる編組糸の編組体
にて形成せしめると共に該編組体へ弗素樹脂粒子
からなる潤滑剤を含有させてなるパツキン。[Scope of Claims] 1. A plurality of cord-like core materials made of foamed polyethylene resin having closed cells are twisted together to form a core, and a braided body of braided threads made of fluororesin fibers is arranged around the core. A packing comprising a lubricant made of fluororesin particles contained in the braided body. 2 A plurality of plate-shaped core materials made of foamed polyethylene resin having closed cells are laminated to form a core, and an intermediate coating layer made of at least one of a fluororesin tape or a tangled metal wire is provided around the core. The packing is further formed of a braided body of a braided thread made of asbestos fibers, and the braided body contains a lubricant made of fluororesin particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4586081A JPS57161365A (en) | 1981-03-27 | 1981-03-27 | Packing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4586081A JPS57161365A (en) | 1981-03-27 | 1981-03-27 | Packing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57161365A JPS57161365A (en) | 1982-10-04 |
| JPS6212422B2 true JPS6212422B2 (en) | 1987-03-18 |
Family
ID=12730959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4586081A Granted JPS57161365A (en) | 1981-03-27 | 1981-03-27 | Packing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57161365A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61241567A (en) * | 1985-04-17 | 1986-10-27 | Nippon Pillar Packing Co Ltd | Packing |
| JPH0454204Y2 (en) * | 1985-10-04 | 1992-12-18 | ||
| JPH0454205Y2 (en) * | 1985-10-04 | 1992-12-18 | ||
| JPH0454203Y2 (en) * | 1985-10-04 | 1992-12-18 | ||
| JPH0446118Y2 (en) * | 1986-06-30 | 1992-10-29 | ||
| JPS63135653A (en) * | 1986-11-25 | 1988-06-08 | Nippon Pillar Packing Co Ltd | Packing material |
| JPH0715311B2 (en) * | 1990-05-16 | 1995-02-22 | 日本ピラー工業株式会社 | Ring packing and method for manufacturing the same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5340581U (en) * | 1976-09-13 | 1978-04-08 |
-
1981
- 1981-03-27 JP JP4586081A patent/JPS57161365A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5340581U (en) * | 1976-09-13 | 1978-04-08 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57161365A (en) | 1982-10-04 |
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