JP2000272062A - Sheet material for expansion joint and production thereof - Google Patents
Sheet material for expansion joint and production thereofInfo
- Publication number
- JP2000272062A JP2000272062A JP11077335A JP7733599A JP2000272062A JP 2000272062 A JP2000272062 A JP 2000272062A JP 11077335 A JP11077335 A JP 11077335A JP 7733599 A JP7733599 A JP 7733599A JP 2000272062 A JP2000272062 A JP 2000272062A
- Authority
- JP
- Japan
- Prior art keywords
- sheet material
- expansion joint
- woven fabric
- heat
- agent
- 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
- 239000000463 material Substances 0.000 title claims abstract description 68
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 27
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 22
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 22
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 14
- 239000004744 fabric Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 9
- 239000002759 woven fabric Substances 0.000 claims description 24
- 239000010409 thin film Substances 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 8
- 239000011162 core material Substances 0.000 claims description 6
- 238000010030 laminating Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 229910052755 nonmetal Inorganic materials 0.000 abstract description 11
- 229920002313 fluoropolymer Polymers 0.000 abstract 2
- 239000012943 hotmelt Substances 0.000 abstract 2
- 239000012528 membrane Substances 0.000 abstract 2
- 229920001577 copolymer Polymers 0.000 description 7
- 238000005452 bending Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 239000010408 film Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 238000007500 overflow downdraw method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 238000009941 weaving Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Joints Allowing Movement (AREA)
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、発電所、製鉄所、
化学プラントの吸排気ダクト、配管機器等の熱歪みや振
動等を吸収させる目的で取り付けられる非金属製の伸縮
継手のシート材料として使用される伸縮継手用シート材
およびその製造方法に関する。The present invention relates to a power plant, a steel mill,
The present invention relates to a sheet material for an expansion joint used as a sheet material of a nonmetallic expansion joint attached for the purpose of absorbing thermal distortion, vibration, and the like of an intake / exhaust duct and piping equipment of a chemical plant, and a method for manufacturing the same.
【０００２】[0002]
【従来の技術】伸縮継手は、吸排気ダクト、配管機器等
の熱による歪や振動等を吸収する目的で使用されるもの
であり、各種プラント、機器類には不可欠なものであ
る。従来、これらの目的で使用される伸縮継手として
は、主に金属製のものが用いられている。しかしなが
ら、金属製の伸縮継手は、変位吸収量が小さく多方向に
変位を吸収することが困難であるため、使用条件が厳し
い箇所での使用に耐えることができなかった。そこで、
このような金属製伸縮継手に代わり、変位吸収量の大き
なクロス、例えば、ガラスクロスを伸縮継手用シート材
（ベローズ材）としたフレキシブルジョイント方式が提
案され（例えば特開平９−２２９２６６号公報）、また
実用化されている。2. Description of the Related Art Expansion joints are used for absorbing heat-induced distortions and vibrations of intake and exhaust ducts, piping equipment, and the like, and are indispensable for various plants and equipment. Conventionally, metal expansion joints used for these purposes are mainly made of metal. However, since the metal expansion joint has a small amount of displacement absorption and it is difficult to absorb displacement in multiple directions, it cannot withstand use in a place where use conditions are severe. Therefore,
In place of such a metal expansion joint, a flexible joint system using a cloth having a large displacement absorption amount, for example, a glass cloth, as a sheet material (bellows material) for the expansion joint has been proposed (for example, Japanese Patent Application Laid-Open No. 9-229266). It has also been put to practical use.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、流体温
度や変位量などの条件がさらに厳しい場所に従来の伸縮
継手用シート材を使用した場合、穴あき、亀裂、破断等
の不具合が発生するなど耐久性に劣る欠点がある。これ
は、いまだ不十分な伸縮性や耐熱性が原因であると考え
られる。したがって本発明の目的は、厳しい条件下での
使用に耐え得る伸縮性および耐熱性を備えた伸縮継手用
シート材およびその製造方法の提供にある。However, when the conventional expansion joint sheet material is used in a place where the conditions such as fluid temperature and displacement amount are more severe, endurance such as defects such as perforation, cracks and breakage occurs. There is a drawback that it is inferior. This is considered to be due to insufficient elasticity and heat resistance. Accordingly, an object of the present invention is to provide a sheet material for an expansion joint having elasticity and heat resistance that can withstand use under severe conditions and a method for producing the same.
【０００４】[0004]
【課題を解決するための手段】本発明者らは鋭意検討し
た結果、ある特定の物性を有する非金属製織布を用いた
ときに上記の課題が解決され得ることを見出し、本発明
を完成することができた。すなわち本発明は、ポリテト
ラフルオロエチレン薄膜、熱融着性フッ素樹脂材（剤）
および非金属製織布をこの順で積層した伸縮継手用シー
ト材であって、前記非金属製織布の縦弾性係数が５〜１
５ＧＰａであることを特徴とする伸縮継手用シート材を
提供するものである。また本発明は、非金属製織布が、
ポリパラフェニレンベンゾビスオキサゾール繊維または
ポリパラフェニレンベンゾビスチアゾール繊維からなる
織布であることを特徴とする前記の伸縮継手用シート材
を提供するものである。さらに本発明は、ポリテトラフ
ルオロエチレン薄膜、熱融着性フッ素樹脂材（剤）およ
び縦弾性係数が５〜１５ＧＰａである非金属製織布を加
熱しこの順で積層することを特徴とする伸縮継手用シー
ト材の製造方法を提供するものである。さらにまた本発
明は、ポリテトラフルオロエチレン薄膜、熱融着性フッ
素樹脂材（剤）および縦弾性係数が５〜１５ＧＰａであ
る非金属製織布を、この順で二つの無端ベルト間で圧接
かつ加熱して積層し、伸縮継手用シート材を連続的に製
造する前記の製造方法を提供するものである。また本発
明は、ポリテトラフルオロエチレン薄膜、熱融着性フッ
素樹脂材（剤）および縦弾性係数が５〜１５ＧＰａであ
る非金属製織布をこの順で重ね合わせロール芯材に巻き
取った後、前記ロール芯材を加熱炉内で加熱することを
特徴とする前記の伸縮継手用シート材の製造方法を提供
するものである。Means for Solving the Problems As a result of intensive studies, the present inventors have found that the above-mentioned problems can be solved by using a non-metal woven fabric having specific physical properties, and completed the present invention. We were able to. That is, the present invention provides a polytetrafluoroethylene thin film, a heat-fusible fluororesin material (agent)
And a sheet material for an expansion joint obtained by laminating a non-metal woven fabric in this order, wherein the non-metal woven fabric has a longitudinal elastic modulus of 5-1.
An object of the present invention is to provide a sheet material for an expansion joint, which is characterized by being 5 GPa. Also, the present invention provides a non-metal woven fabric,
The present invention provides the above-mentioned sheet material for expansion joint, which is a woven fabric made of polyparaphenylene benzobisoxazole fiber or polyparaphenylene benzobisthiazole fiber. Further, the present invention is characterized in that a polytetrafluoroethylene thin film, a heat-fusible fluororesin material (agent) and a nonmetallic woven fabric having a longitudinal elastic modulus of 5 to 15 GPa are heated and laminated in this order. It is intended to provide a method for producing a sheet material for a joint. Furthermore, the present invention presses a polytetrafluoroethylene thin film, a heat-fusible fluororesin material (agent), and a nonmetallic woven fabric having a longitudinal elastic modulus of 5 to 15 GPa in this order between two endless belts. An object of the present invention is to provide the above-described production method for continuously producing a sheet material for an expansion joint by heating and laminating. The present invention also provides a method of stacking a polytetrafluoroethylene thin film, a heat-fusible fluororesin material (agent), and a nonmetallic woven fabric having a longitudinal elastic modulus of 5 to 15 GPa in this order, and winding the resultant onto a roll core material. And a method for producing the above-mentioned sheet material for expansion joints, wherein the roll core material is heated in a heating furnace.
【０００５】[0005]
【発明の実施の形態】以下、本発明をさらに詳細に説明
する。図１は、本発明の伸縮継手用シート材の一例を説
明するための断面図である。図１の本発明の伸縮継手用
シート材１は、ポリテトラフルオロエチレン薄膜１１、
熱融着性フッ素樹脂材（剤）１２および非金属製織布１
３がこの順で積層されている。そして非金属製織布１３
の縦弾性係数が５〜１５ＧＰａであることに特徴を有し
ている。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail. FIG. 1 is a cross-sectional view for explaining an example of the expansion joint sheet material of the present invention. The expansion joint sheet material 1 of the present invention shown in FIG.
Heat-fusible fluororesin material (agent) 12 and woven nonmetallic fabric 1
3 are stacked in this order. And non-metal woven cloth 13
Is characterized by having a modulus of longitudinal elasticity of 5 to 15 GPa.
【０００６】本発明に使用される非金属製織布１３は、
縦弾性係数が５〜１５ＧＰａ、好ましくは１０〜１５Ｇ
Ｐａであればいかなる種類のものであってもよい。この
縦弾性係数は、従来の伸縮継手用シート材に含まれる織
布の１０倍以上の値である。前記条件を満たす非金属製
織布１３としては、例えば好適にはポリパラフェニレン
ベンゾビスオキサゾール繊維、ポリパラフェニレンベン
ゾビスチアゾール繊維等が挙げられる。本発明でいう縦
弾性係数とはヤング率とも呼ばれ、その測定方法は当業
界でよく知られているので、ここでの記載は省略する。
非金属製織布１３は、目付量でいえば５０〜２０００ｇ
／ｍ2が好ましく、また織り込み本数は縦１５〜６０本
／２５ｍｍ、横５〜５０本／２５ｍｍが好ましい。非金
属製織布１３の厚さは、例えば０．２〜３．０ｍｍ、好
ましくは０．３〜２．０ｍｍがよい。厚さは０．２ｍｍ
未満では補強効果は得られず、３．０ｍｍを超えると補
強効果は高くなるが経済的でない。The non-metallic woven fabric 13 used in the present invention comprises:
The longitudinal elastic modulus is 5 to 15 GPa, preferably 10 to 15 G
Any kind of Pa may be used. This modulus of longitudinal elasticity is 10 times or more the value of the woven fabric contained in the conventional expansion joint sheet material. As the nonmetallic woven fabric 13 satisfying the above conditions, for example, polyparaphenylene benzobisoxazole fiber, polyparaphenylene benzobisthiazole fiber and the like are preferably mentioned. The modulus of longitudinal elasticity referred to in the present invention is also referred to as Young's modulus, and a method for measuring the modulus is well known in the art.
The non-metal woven fabric 13 is 50 to 2000 g in terms of the basis weight.
/ M 2 is preferable, and the number of weaving lines is preferably 15 to 60 lines / 25 mm in length and 5 to 50 lines / 25 mm in width. The thickness of the nonmetal woven fabric 13 is, for example, 0.2 to 3.0 mm, and preferably 0.3 to 2.0 mm. 0.2mm thick
If it is less than 3.0 mm, the reinforcing effect cannot be obtained.
【０００７】本発明に使用されるポリテトラフルオロエ
チレン薄膜１１は、とくに制限されないが、伸縮継手内
を通過する流体をシールし、かつ良好な伸縮性、耐熱性
および耐薬品性を有するものが望ましい。軟化点は２５
０℃以上のものがよい。ポリテトラフオロエチレン薄膜
１１の厚さは、例えば０．１〜１．０ｍｍ、好ましくは
０．３〜０．８ｍｍがよい。厚さは０．１ｍｍ未満では
絶対強度が低くなり、外力に対して抗しきれなくなる。
逆に１．０ｍｍを超えると柔軟性が劣る。The polytetrafluoroethylene thin film 11 used in the present invention is not particularly limited, but it is preferable that the thin film 11 seals a fluid passing through an expansion joint and has good elasticity, heat resistance and chemical resistance. . Softening point is 25
Those having a temperature of 0 ° C or higher are preferred. The thickness of the polytetrafluoroethylene thin film 11 is, for example, 0.1 to 1.0 mm, and preferably 0.3 to 0.8 mm. If the thickness is less than 0.1 mm, the absolute strength is low, and it cannot withstand external force.
Conversely, if it exceeds 1.0 mm, the flexibility is poor.
【０００８】本発明に使用される熱融着性フッ素樹脂材
（剤）１２は、上記非金属製織布１３とポリテトラフル
オロエチレン薄膜１１とを接着することができればとく
に制限されないが、例えばテトラフルオロエチレン−フ
ルオロアルキルビニルエーテル共重合体、テトラフルオ
ロエチレン−ヘキサフルオロプロピレン共重合体等が好
ましい。これらの共重合体において、フッ素は、７０〜
８０重量％含まれているのがよい。熱融着性フッ素樹脂
材（剤）の厚さは、例えば０．０１〜０．０５ｍｍ、好
ましくは０．０２〜０．０４ｍｍがよい。厚さは、０．
０１ｍｍ未満では熱融着性が劣り、未融着部ができる。
また、０．０５ｍｍを超えるとフローにより熱融着部に
皺が入る等、シートの平滑性、均一性が損なわれる。The heat-fusible fluororesin material (agent) 12 used in the present invention is not particularly limited as long as the non-metal woven fabric 13 and the polytetrafluoroethylene thin film 11 can be bonded. Preferred are a fluoroethylene-fluoroalkyl vinyl ether copolymer, a tetrafluoroethylene-hexafluoropropylene copolymer, and the like. In these copolymers, fluorine is 70 to
It is preferred that the content be 80% by weight. The thickness of the heat-fusible fluororesin material (agent) is, for example, 0.01 to 0.05 mm, and preferably 0.02 to 0.04 mm. The thickness is 0.
When the thickness is less than 01 mm, the heat-fusibility is poor, and unfused portions are formed.
On the other hand, if the thickness exceeds 0.05 mm, smoothness and uniformity of the sheet are impaired, for example, wrinkles are formed in the heat-sealed portion due to the flow.
【０００９】本発明の伸縮継手用シート材１は、上記の
ポリテトラフルオロエチレン薄膜１１、熱融着性フッ素
樹脂材（剤）１２および縦弾性係数が５〜１５ＧＰａで
ある非金属製織布１３をこの順で重ねて、例えば３５０
〜３８０℃の温度で数分間圧着することにより製造する
ことができる。具体的な製造方法としては、バッチプレ
ス法、ベルトプレス法およびロール巻き取り加熱融着法
が挙げられる。The expansion joint sheet material 1 of the present invention comprises the above-mentioned polytetrafluoroethylene thin film 11, a heat-fusible fluororesin material (agent) 12, and a nonmetallic woven fabric 13 having a longitudinal modulus of 5 to 15 GPa. Are stacked in this order, for example, 350
It can be manufactured by pressure bonding at a temperature of ３380 ° C. for several minutes. Specific production methods include a batch press method, a belt press method, and a roll winding heat fusion method.
【００１０】バッチプレス法は、使用単位ごとに材料を
用意し、これを上記順番で重ねてプレス機により加熱し
ながらプレスし、シート材を得るというものである。ベ
ルトプレス法は、材料をダブルベルトプレス機のベルト
間で圧接しながら加熱し、連続的にシート材を得る方法
である。ダブルベルトプレス機は、材料を挟んで互いに
対面する方向に設けらるとともに該材料を同方向に運搬
することのできる二つの無端ベルトを備えてなり、材料
導入部、余熱領域を含む加熱部、冷却部が順番に設けら
れている。材料は、無端ベルト間で圧接されながら移動
し、さらに加熱部で加熱融着され、冷却部で冷却され固
定化された後、ダブルベルトプレス機の下流に設けられ
たロールにより巻き取られるというものである。このよ
うにしてベルトプレス法によれば、本発明の伸縮継手用
シート材を連続的に製造することができる。なお、ベル
トプレス法およびこれに用いられるダブルベルトプレス
機は、当業界で公知であり、例えば特開平１０−１８０
９５８号公報にも記載されている。ロール巻き取り加熱
融着法は、材料にある程度のテンションをかけ、ロール
芯材に巻き取った後、このロール芯材を加熱炉内で加熱
し材料を融着させ、本発明の伸縮継手用シート材を得る
というものである。このロール巻き取り加熱融着法によ
れば、本発明の伸縮継手用シート材を連続的にかつ大量
に製造することができる。In the batch press method, materials are prepared for each unit to be used, stacked in the above order, and pressed while being heated by a press to obtain a sheet material. The belt press method is a method in which a material is heated while being pressed between belts of a double belt press to continuously obtain a sheet material. The double belt press machine is provided with two endless belts provided in a direction facing each other across the material and capable of transporting the material in the same direction, a material introduction unit, a heating unit including a residual heat area, Cooling sections are provided in order. The material moves while being pressed against the endless belt, is further heated and fused in the heating unit, cooled and fixed in the cooling unit, and then wound by a roll provided downstream of the double belt press. It is. Thus, according to the belt press method, the sheet material for an expansion joint of the present invention can be continuously manufactured. A belt press method and a double belt press used for the belt press method are known in the art.
No. 958 is also described. The roll winding heat fusion method is to apply a certain amount of tension to the material, wind the material around a roll core material, heat the roll core material in a heating furnace to fuse the material, and use the expansion joint sheet of the present invention. Is to get the material. According to this roll winding heat fusion method, the sheet material for expansion joints of the present invention can be manufactured continuously and in large quantities.
【００１１】このようにして得られる本発明の伸縮継手
用シート材は、伸縮性、耐熱性に優れるとともに、引張
強さ、耐薬品性にも優れたものである。また本発明の伸
縮継手用シート材の使用方法は、従来の伸縮継手と同じ
であり、特別な手段や処理を必要としない。The thus obtained sheet material for expansion joint of the present invention has excellent stretchability and heat resistance, as well as excellent tensile strength and chemical resistance. The method of using the expansion joint sheet of the present invention is the same as that of the conventional expansion joint, and does not require any special means or treatment.
【００１２】[0012]
【実施例】以下、本発明を実施例および比較例によりさ
らに説明する。 実施例１ 図１に示すように、厚さ０．３ｍｍ、目付量１９０ｇ／
ｍ2、織り込み本数縦４０本／２５ｍｍ、横４０本／２
５ｍｍのポリパラフェニレンベンゾビスオキサゾール
（ＰＢＯ）繊維織布と厚さ０．３ｍｍのポリテトラフル
オロエチレン（ＰＴＦＥ）薄板との間に、厚さ０．０２
ｍｍのテトラフルオロエチレン−フルオロアルキルビニ
ルエーテル共重合体（ＰＦＡ）フィルムを挟み、プレス
圧０．１ＭＰａ、３７０℃の温度で１０分間圧着して厚
さ０．６ｍｍの伸縮継手用シート材を得た。The present invention will be further described below with reference to examples and comparative examples. Example 1 As shown in FIG. 1, a thickness of 0.3 mm and a basis weight of 190 g /
m 2 , number of weaving 40 vertical / 25mm, horizontal 40/2
Between a 5 mm polyparaphenylene benzobisoxazole (PBO) fiber woven fabric and a 0.3 mm thick polytetrafluoroethylene (PTFE) sheet, a thickness of 0.02
A tetrafluoroethylene-fluoroalkylvinyl ether copolymer (PFA) film having a thickness of 2 mm was sandwiched and pressed at a pressure of 0.1 MPa at a temperature of 370 ° C. for 10 minutes to obtain a 0.6 mm-thick expansion joint sheet material.
【００１３】実施例２ 厚さ０．３ｍｍ、目付量１９０ｇ／ｍ2、織り込み本数
縦４０本／２５ｍｍ、横４０本／２５ｍｍのポリパラフ
ェニレンベンゾビスオキサゾール（ＰＢＯ）繊維織布と
厚さ０．３ｍｍのポリテトラフルオロエチレン（ＰＴＦ
Ｅ）薄板との間に厚さ０．０２ｍｍのテトラフルオロエ
チレン−フルオロアルキルビニルエーテル共重合体（Ｐ
ＦＡ）フィルムを挟み、プレス圧０．２ＭＰａ、３７０
℃の温度で１０分間圧着して厚さ０．６ｍｍの伸縮継手
用シート材を得た。Example 2 A polyparaphenylene benzobisoxazole (PBO) fiber woven fabric having a thickness of 0.3 mm, a basis weight of 190 g / m 2 , and a weaving number of 40/25 mm in length and 40/25 mm in width was used. 3mm polytetrafluoroethylene (PTF
E) 0.02 mm thick tetrafluoroethylene-fluoroalkyl vinyl ether copolymer (P)
FA) sandwiching the film, press pressure 0.2MPa, 370
C. for 10 minutes at a temperature of .degree. C. to obtain a sheet material for expansion joints having a thickness of 0.6 mm.
【００１４】比較例１ 厚さ０．７ｍｍのガラスクロスと厚さ０．３ｍｍのポリ
テトラフルオロエチレン（ＰＴＦＥ）薄板との間に厚さ
０．０２ｍｍのテトラフルオロエチレン−フルオロアル
キルビニルエーテル共重合体（ＰＦＡ）フィルムを挟
み、プレス圧０．２ＭＰａ、３５０℃の温度で１０分間
圧着して厚さ１．０ｍｍの伸縮継手用シート材を得た。Comparative Example 1 A 0.02 mm-thick tetrafluoroethylene-fluoroalkylvinyl ether copolymer (0.7 mm thick glass cloth and a 0.3 mm-thick polytetrafluoroethylene (PTFE) thin plate) A PFA) film was sandwiched and pressed at a pressing pressure of 0.2 MPa at a temperature of 350 ° C. for 10 minutes to obtain a sheet material for an expansion joint having a thickness of 1.0 mm.
【００１５】比較例２ 厚さ１．５ｍｍのガラスクロスと厚さ０．３ｍｍのポリ
テトラフルオロエチレン（ＰＴＦＥ）薄板との間に厚さ
０．０２ｍｍのテトラフルオロエチレン−フルオロアル
キルビニルエーテル共重合体（ＰＦＡ）フィルムを挟
み、プレス圧０．２ＭＰａ、３５０℃の温度で１０分間
圧着して厚さ１．８ｍｍの伸縮継手用シート材を得た。Comparative Example 2 A 0.02 mm thick tetrafluoroethylene-fluoroalkyl vinyl ether copolymer (1.5 mm thick glass cloth and a 0.3 mm thick polytetrafluoroethylene (PTFE) thin plate) The PFA) film was sandwiched and pressed at a pressure of 0.2 MPa and a temperature of 350 ° C. for 10 minutes to obtain a 1.8 mm-thick expansion joint sheet material.
【００１６】上記実施例および比較例で得られた伸縮継
手用シート材の伸縮性（耐屈曲性）および耐熱性を調べ
た。耐屈曲性は、３００ｍｍ長さ×３５０ｍｍ幅のベロ
ーズ構造で伸縮幅１００ｍｍ、伸縮速度１００回／分の
条件で屈曲を反復し、５千回、１万回および５万回屈曲
後の外観を観察することにより評価した。耐熱性は、所
定の温度のチャンバー中で、引張強さを測定し評価し
た。得られた結果を表１に示す。The stretchability (bending resistance) and heat resistance of the expansion joint sheet materials obtained in the above Examples and Comparative Examples were examined. The bending resistance is a bellows structure of 300 mm length x 350 mm width, and the bending is repeated under the condition of expansion and contraction width of 100 mm and expansion and contraction speed of 100 times / min, and the external appearance after bending 5,000 times, 10,000 times and 50,000 times is observed. It evaluated by doing. The heat resistance was evaluated by measuring the tensile strength in a chamber at a predetermined temperature. Table 1 shows the obtained results.
【００１７】[0017]
【表１】 [Table 1]
【００１８】表１の結果から、本発明の伸縮継手用シー
ト材は、５万回屈曲しても異常は見られず、伸縮性に優
れているが、比較例の伸縮継手用シート材は、５万回屈
曲後に穴あきや毛羽立ちがみられ、伸縮性不良であるこ
とが分かる。また表１の結果から、本発明の伸縮継手用
シート材は、いずれの温度でも引張強さが比較例よりも
高く、良好な耐熱性を有することが分かる。From the results shown in Table 1, the sheet material for an expansion joint of the present invention shows no abnormality even after bending 50,000 times, and is excellent in elasticity. Perforations and fluffing were observed after bending 50,000 times, indicating poor stretchability. Further, from the results in Table 1, it can be seen that the tensile strength of the sheet material for expansion joint of the present invention is higher than that of the comparative example at any temperature, and that the sheet material has good heat resistance.
【００１９】[0019]
【発明の効果】本発明によれば、厳しい条件下での使用
に耐え得る伸縮性および耐熱性を備えた伸縮継手用シー
ト材およびその製造方法が提供される。According to the present invention, a sheet material for an expansion joint having elasticity and heat resistance that can withstand use under severe conditions and a method for producing the same are provided.
【図１】本発明の伸縮継手用シート材の一例を説明する
ための断面図である。FIG. 1 is a cross-sectional view illustrating an example of a sheet material for an expansion joint according to the present invention.
１ 伸縮継手用シート材 １１ ポリテトラフルオロエチレン薄膜 １２ 熱融着性フッ素樹脂材（剤） １３ 非金属製織布 DESCRIPTION OF SYMBOLS 1 Sheet material for expansion joints 11 Polytetrafluoroethylene thin film 12 Heat-fusible fluororesin material (agent) 13 Non-metallic woven fabric
───────────────────────────────────────────────────── フロントページの続き (72)発明者 諸星 常志 茨城県石岡市柏原６番１号 株式会社建材 テクノ研究所内 (72)発明者 柏木 俊之 茨城県石岡市柏原６番１号 株式会社建材 テクノ研究所内 Ｆターム(参考） 3H104 JA08 JC08 JD09 LD01 LD07 MA01 MA08 4F100 AK17B AK18A AK80C BA03 BA07 BA10A BA10C DG01C DG11C EC01 EC012 EC03B GB51 GB90 JJ03 JK07C JK08 YY00C ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Tsuneshi Moroboshi 6-1, Kashiwara, Ishioka City, Ibaraki Pref. Inside the Building Materials Techno Laboratory (72) Inventor Toshiyuki Kashiwagi 6-1, Kashiwara, Ishioka City, Ibaraki Pref. F-term in the laboratory (reference) 3H104 JA08 JC08 JD09 LD01 LD07 MA01 MA08 4F100 AK17B AK18A AK80C BA03 BA07 BA10A BA10C DG01C DG11C EC01 EC012 EC03B GB51 GB90 JJ03 JK07C JK08 YY00C
Claims (5)
着性フッ素樹脂材（剤）および非金属製織布をこの順で
積層した伸縮継手用シート材であって、前記非金属製織
布の縦弾性係数が５〜１５ＧＰａであることを特徴とす
る伸縮継手用シート材。1. A sheet material for an expansion joint in which a polytetrafluoroethylene thin film, a heat-fusible fluororesin material (agent) and a non-metallic woven fabric are laminated in this order, wherein the longitudinal direction of the non-metallic woven fabric is An elastic joint sheet material having an elastic coefficient of 5 to 15 GPa.
ンゾビスオキサゾール繊維またはポリパラフェニレンベ
ンゾビスチアゾール繊維からなる織布であることを特徴
とする請求項１に記載の伸縮継手用シート材。2. The expansion joint sheet material according to claim 1, wherein the nonmetallic woven fabric is a woven fabric made of polyparaphenylene benzobisoxazole fiber or polyparaphenylene benzobisthiazole fiber.
着性フッ素樹脂材（剤）および縦弾性係数が５〜１５Ｇ
Ｐａである非金属製織布を加熱しこの順で積層すること
を特徴とする伸縮継手用シート材の製造方法。3. A polytetrafluoroethylene thin film, a heat-fusible fluororesin material (agent) and a modulus of longitudinal elasticity of 5 to 15 G
A method for producing a sheet material for an expansion joint, comprising heating a non-metallic woven fabric of Pa and laminating in this order.
着性フッ素樹脂材（剤）および縦弾性係数が５〜１５Ｇ
Ｐａである非金属製織布を、この順で二つの無端ベルト
間で圧接かつ加熱して積層し、伸縮継手用シート材を連
続的に製造する請求項３に記載の製造方法。4. A polytetrafluoroethylene thin film, a heat-fusible fluororesin material (agent), and a material having a longitudinal modulus of 5 to 15 G.
The manufacturing method according to claim 3, wherein the non-metallic woven fabric of Pa is laminated by pressing and heating the two endless belts in this order, and the expansion joint sheet material is continuously manufactured.
着性フッ素樹脂材（剤）および縦弾性係数が５〜１５Ｇ
Ｐａである非金属製織布をこの順で重ね合わせロール芯
材に巻き取った後、前記ロール芯材を加熱炉内で加熱す
ることを特徴とする請求項３に記載の製造方法。5. A polytetrafluoroethylene thin film, a heat-fusible fluororesin material (agent) and a material having a longitudinal elastic modulus of 5 to 15 G
4. The method according to claim 3, wherein the non-metallic woven cloth of Pa is superposed in this order and wound on a roll core material, and then the roll core material is heated in a heating furnace. 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11077335A JP2000272062A (en) | 1999-03-23 | 1999-03-23 | Sheet material for expansion joint and production thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11077335A JP2000272062A (en) | 1999-03-23 | 1999-03-23 | Sheet material for expansion joint and production thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000272062A true JP2000272062A (en) | 2000-10-03 |
Family
ID=13631064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11077335A Pending JP2000272062A (en) | 1999-03-23 | 1999-03-23 | Sheet material for expansion joint and production thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000272062A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001263562A (en) * | 2000-03-23 | 2001-09-26 | Kenzai Gijutsu Kenkyusho:Kk | Non-metallic expansion joint |
| US7943011B2 (en) | 2006-05-05 | 2011-05-17 | International Paper Company | Paperboard material with expanded polymeric microspheres |
| US8317976B2 (en) | 2000-01-26 | 2012-11-27 | International Paper Company | Cut resistant paper and paper articles and method for making same |
| US8382945B2 (en) | 2008-08-28 | 2013-02-26 | International Paper Company | Expandable microspheres and methods of making and using the same |
-
1999
- 1999-03-23 JP JP11077335A patent/JP2000272062A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8317976B2 (en) | 2000-01-26 | 2012-11-27 | International Paper Company | Cut resistant paper and paper articles and method for making same |
| JP2001263562A (en) * | 2000-03-23 | 2001-09-26 | Kenzai Gijutsu Kenkyusho:Kk | Non-metallic expansion joint |
| US7943011B2 (en) | 2006-05-05 | 2011-05-17 | International Paper Company | Paperboard material with expanded polymeric microspheres |
| US8382945B2 (en) | 2008-08-28 | 2013-02-26 | International Paper Company | Expandable microspheres and methods of making and using the same |
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