JP2566290B2 - Fluororesin bonded article - Google Patents
Fluororesin bonded articleInfo
- Publication number
- JP2566290B2 JP2566290B2 JP63139075A JP13907588A JP2566290B2 JP 2566290 B2 JP2566290 B2 JP 2566290B2 JP 63139075 A JP63139075 A JP 63139075A JP 13907588 A JP13907588 A JP 13907588A JP 2566290 B2 JP2566290 B2 JP 2566290B2
- Authority
- JP
- Japan
- Prior art keywords
- diameter tubular
- tubular body
- small
- diameter
- fluororesin
- 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 - Lifetime
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
- Separation Using Semi-Permeable Membranes (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は接合部を有するフッ素樹脂製物品に関するも
のである。TECHNICAL FIELD The present invention relates to a fluororesin article having a joint.
（従来の技術） 例えば、熱交換器における熱交換エレメントあるいは
溶液中の溶存ガスを除去する脱気装置の脱気エレメント
には大径管状体と多数の小径管状体を接合せしめた物品
が用いられることがある。(Prior Art) For example, an article obtained by joining a large-diameter tubular body and a large number of small-diameter tubular bodies is used as a heat exchange element in a heat exchanger or a degassing element of a degassing device for removing dissolved gas in a solution. Sometimes.
そして、このような接合物品の製造法としては、特開
昭62-21524号公報に記載された方法が知られている。こ
の方法は、多数の熱可塑性樹脂製チューブを引き揃え、
その引き揃えたチューブ束の端部分を同種材料からなる
スリーブ内に挿入し、加熱処理ならびにチューブ内外側
への圧力差処理により、チューブ同志およびチューブと
スリーブとを水密状態に融着する方法であって、前記ス
リーブとして、チューブ束を囲繞する内側面が加熱処理
による内径収縮量を見込んでテーパー状に拡開する円錐
面部とされたものを用いるものである。As a method for producing such a bonded article, the method described in JP-A-62-21524 is known. This method draws a large number of thermoplastic tubes,
This is a method in which the ends of the aligned tube bundles are inserted into a sleeve made of the same material, and the tubes and the tube and the sleeve are fused in a watertight state by heat treatment and pressure difference treatment between the inside and outside of the tube. As the sleeve, an inner side surface that surrounds the tube bundle is used as a conical surface portion that expands in a taper shape in consideration of an inner diameter contraction amount due to heat treatment.
（発明が解決しようとする課題） 上記従来法においては、スリーブとして円錐面部を有
するものを用いる必要があるが、かような異形スリーブ
はその製造が必らずしも容易ではないという問題があっ
た。(Problems to be Solved by the Invention) In the above conventional method, it is necessary to use a sleeve having a conical surface portion, but there is a problem that such a deformed sleeve is not necessarily easy to manufacture. It was
かような異形スリーブ使用に起因する問題を解決する
ため、本出願人は先に、フッ素樹脂製小径管状体に熱収
縮性を有するフッ素樹脂製大径管状体を外挿せしめると
共に、小径管状体内にはその内径と略同寸法の外径の耐
熱性芯体を、前記外挿部内には熱融着性を有するフッ素
樹脂粉体を各々配置せしめ、次いで前記大径管状体が熱
収縮し且つフッ素樹脂粉体が熱融着し得る温度に加熱
し、管状体相互を接合せしめて接合物品を得る方法（特
願昭62-218200号）を提案した。In order to solve the problem caused by the use of such a deformed sleeve, the present applicant has previously made it possible to insert a fluororesin large-diameter tubular body having heat shrinkability onto a fluororesin small-diameter tubular body and A heat-resistant core body having an outer diameter of about the same size as the inner diameter thereof, and a fluororesin powder having heat fusion property is disposed in the outer insertion portion, respectively, and then the large-diameter tubular body undergoes heat shrinkage and We proposed a method (Japanese Patent Application No. 62-218200) in which a fluororesin powder is heated to a temperature at which it can be heat-sealed, and tubular bodies are joined together to obtain a joined article.
この方法は異形スリーブを用いることなく、フッ素樹
脂製接合物品を容易に得ることができるので好ましいも
のである。This method is preferable because a fluororesin-bonded article can be easily obtained without using a deformed sleeve.
ところが、この方法では、用いる小径管状体の本数が
増加した場合、フッ素樹脂粉体による融着部に気泡が残
存することがあり、その結果、接合強度や液密性に懸念
を生ずることがある。However, in this method, when the number of small-diameter tubular bodies to be used is increased, bubbles may remain in the fusion-bonded portion of the fluororesin powder, and as a result, there may be a concern about the bonding strength and the liquid tightness. .
従って、本発明は本出願人による先の提案を更に改良
するもので、異形スリーブを用いず、しかも溶着部にお
ける気泡発生の無い接合物品を提供することを目的とす
る。Accordingly, the present invention is a further improvement of the above-mentioned proposal by the present applicant, and an object thereof is to provide a joined article which does not use a deformed sleeve and which does not generate bubbles in the welded portion.
（課題を解決するための手段） 本発明者は種々検討の結果、理由は明らかではない
が、小径管状体に中径管状体および大径管状体の両管状
体を外挿せしめることにより、上記目的を達成し得るこ
とを見出し、本発明に至ったものである。(Means for Solving the Problem) As a result of various investigations by the present inventor, although the reason is not clear, by inserting both the medium-diameter tubular body and the large-diameter tubular body into the small-diameter tubular body, The inventors have found that the object can be achieved and have reached the present invention.
即ち、本発明に係るフッ素樹脂製接合物品は、複数本
のフッ素樹脂製小径管状体の少なくとも一方の端部上
に、フッ素樹脂製大径管状体が外挿されると共に、小径
管状体と大径管状体の間には中径管状体が配置せしめら
れており、更に該端部において小径管状体相互、小径管
状体と中径管状体、小径管状体と大径管状体が接合せし
められていることを特徴とするものである。That is, the fluororesin-bonded article according to the present invention is such that at least one end of a plurality of fluororesin small-diameter tubular bodies is fitted with a fluororesin large-diameter tubular body, and a small-diameter tubular body and a large-diameter tubular body. A medium-diameter tubular body is arranged between the tubular bodies, and further, small-diameter tubular bodies, small-diameter tubular bodies and medium-diameter tubular bodies, and small-diameter tubular bodies and large-diameter tubular bodies are joined at the ends. It is characterized by that.
以下、図面を参照しながら本発明を説明する。第１図
および第２図において、１はポリテトラフルオロエチレ
ン（PTFE）、テトラフルオロエチレン−パーフルオロア
ルキルビニルエーテル共重合体（PFA）、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（FE
P）、エチレン−テトラフルオロエチレン共重合体（ETF
E）、テトラフルオロエチレン−ヘキサフルオロプロピ
レン−パーフルオロビニルエーテル共重合体（EPE）等
のフッ素樹脂から成る複数本の小径管状体である。Hereinafter, the present invention will be described with reference to the drawings. In FIG. 1 and FIG. 2, 1 is polytetrafluoroethylene (PTFE), tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA), tetrafluoroethylene-hexafluoropropylene copolymer (FE
P), ethylene-tetrafluoroethylene copolymer (ETF
E), a plurality of small-diameter tubular bodies made of a fluororesin such as tetrafluoroethylene-hexafluoropropylene-perfluorovinyl ether copolymer (EPE).
これら小径管状体１は引き揃えられ、その両端部上に
フッ素樹脂製の大径管状体３が外挿され、且つ小径管状
体１と大径管状体３の間にはフッ素樹脂製の中径管状体
２が介在配置されている。そして、小径管状体１相互、
小径管状体１と中径管状体２、小径管状体１と大径管状
体３はフッ素樹脂粉体４により融着接合せしめられてい
る。These small-diameter tubular bodies 1 are aligned, and large-diameter tubular bodies 3 made of fluororesin are externally inserted on both ends thereof, and a medium-diameter fluororesin body is provided between the small-diameter tubular bodies 1 and the large-diameter tubular bodies 3. The tubular body 2 is interposed. And each of the small-diameter tubular bodies 1,
The small-diameter tubular body 1 and the medium-diameter tubular body 2, and the small-diameter tubular body 1 and the large-diameter tubular body 3 are fusion-bonded with a fluororesin powder 4.
次に、上記第１図および第２図に示すフッ素樹脂製接
合物品の製造法の一例について述べる。Next, an example of a method for manufacturing the fluororesin-bonded article shown in FIGS. 1 and 2 will be described.
この方法においては、小径管状体相互および小径管状
体と中径管状体を接合するため、先ず、複数本のフッ素
樹脂製小径管状体の少なくとも一方の端部上に、熱収縮
性を有する中径のフッ素樹脂製管状体を外挿せしめ、前
記小径管状体内にはその内径と略同寸法の外径を有する
耐熱性芯体を配置せしめ、更にこれら小径管状体の前記
端部の外周面に熱融着性を有するフッ素樹脂粉体を配置
せしめ、次いで前記中径管状体が熱収縮し且つフッ素樹
脂粉体が熱融着し得る温度に加熱することにより、前記
端部を接合する。In this method, in order to join the small-diameter tubular body to each other and the small-diameter tubular body and the medium-diameter tubular body, first, on at least one end of a plurality of fluororesin small-diameter tubular bodies, a medium-diameter body having heat shrinkability Of the fluororesin tubular body, and a heat-resistant core body having an outer diameter substantially the same as the inner diameter of the small-diameter tubular body is placed on the outer surface of the end portion of the small-diameter tubular body. The end portions are joined by disposing a fluororesin powder having a fusion property and then heating the medium-diameter tubular body to a temperature at which the fluororesin powder is heat-shrinkable and the fluororesin powder can be heat-sealed.
第３図は該接合作業の例を示し、１はフッ素樹脂製の
小径管状体であり、図示では２本あるが、これに限ら
ず、３本以上であってよいが、本発明はこの小径管状体
が多数本（例えば約80本以上）の場合に特に有用であ
る。これら小径管状体１の端部には、該管状体１と同種
あるいは異種のフッ素樹脂から成る熱収縮性の中径管状
体２（この熱収縮率は通常75％以下）が外挿されてい
る。FIG. 3 shows an example of the joining work, and 1 is a small-diameter tubular body made of a fluororesin, and although there are two in the drawing, the number is not limited to this, and three or more may be used. It is particularly useful when the number of tubular bodies is large (for example, about 80 or more). A heat-shrinkable medium-diameter tubular body 2 made of a fluororesin of the same type or a different type as the tubular body 1 (the heat shrinkage rate is usually 75% or less) is extrapolated to the end of the small-diameter tubular body 1. .
そして、各小径管状体１内には、中径管状体２を外挿
せしめた端部内に、その内径と略同寸法の外径を有する
棒状あるいは筒状の耐熱性芯体５が配置されている。Then, in each small-diameter tubular body 1, a rod-shaped or tubular heat-resistant core body 5 having an outer diameter approximately the same as the inner diameter thereof is arranged in an end portion into which the medium-diameter tubular body 2 is externally inserted. There is.
この芯体５は、後に行なわれる加熱工程において、小
径管状体１に中径管状体２の熱収縮力が作用した際に、
該小径管状体１の変形を阻止するためのもので、加熱工
程の実施温度では変形しない材質のものを用いる。This core body 5 has a structure that when the heat shrinkage force of the medium-diameter tubular body 2 acts on the small-diameter tubular body 1 in the heating step performed later,
A material for preventing deformation of the small-diameter tubular body 1 is used, which does not deform at the temperature at which the heating step is performed.
かように、耐熱性芯体５は加熱工程において、小径管
状体１の保形作用を果すものであり、その長さ（Ｄ1）
は小径管状体１への中径管状体２の外挿長さ（Ｄ2）よ
りも長くするのが好ましいものである。従って、小径管
状体１内にその長さと同等もしくはそれよりも長い芯体
を配置することができる。この芯体５は外周面にシリコ
ーン樹脂のような離形剤を塗布して用いてもよい。As described above, the heat-resistant core body 5 serves to retain the shape of the small-diameter tubular body 1 in the heating step, and its length (D 1 )
Is preferably longer than the extrapolation length (D 2 ) of the medium diameter tubular body 2 to the small diameter tubular body 1. Therefore, a core body having a length equal to or longer than that of the small-diameter tubular body 1 can be arranged. The core body 5 may be used by applying a release agent such as a silicone resin on the outer peripheral surface.
また、この方法においては、小径管状体１相互を接合
すると共に、小径管状体１と中径管状体２を接合するた
め、該小径管状体１の端部の外周面上に熱融着性を有す
るフッ素樹脂粉体４が配置される。これらフッ素樹脂の
具体例としては、PFA,FEP,ETFE,EPE等があげられる。こ
の粉体の粒径はフッ素樹脂の種類、加熱時の温度等に応
じて設定するが、通常は約50μｍ以下である。この粉体
の配置領域の長さ（Ｄ3）は、加熱時の熱流動を考慮
し、外挿長さ（Ｄ2）よりも短かくするのが好ましい。
（Ｄ3）が長すぎると、加熱時に熱溶融したフッ素樹脂
が大きく流動し、小径管状体１の端部（例えば、図面に
おける左端部）から内部へ流れこむことが懸念される。Further, in this method, since the small-diameter tubular bodies 1 are joined to each other and the small-diameter tubular body 1 and the medium-diameter tubular body 2 are joined to each other, thermal fusion bonding is performed on the outer peripheral surface of the end portion of the small-diameter tubular body 1. The fluororesin powder 4 which it has is arranged. Specific examples of these fluororesins include PFA, FEP, ETFE, EPE and the like. The particle size of this powder is set according to the type of fluororesin, the temperature during heating, etc., but is usually about 50 μm or less. It is preferable that the length (D 3 ) of the region where the powder is arranged is shorter than the extrapolation length (D 2 ) in consideration of heat flow during heating.
If (D 3 ) is too long, there is a concern that the heat-melted fluororesin during heating will largely flow and flow from the end (for example, the left end in the drawing) of the small-diameter tubular body 1 to the inside.
この方法においては、小径管状体１、中径管状体２、
耐熱性芯体５およびフッ素樹脂粉体４が上記のように配
置された後、加熱される。加熱は、例えば、中径管状体
２上に配置したヒーター６によって行なうことができ
る。この際の温度は、中径管状体２が熱収縮し且つフッ
素樹脂粉体４が熱融着し得る温度（軟化温度以上もしく
は融点以上）であれば特に限定されない。In this method, a small diameter tubular body 1, a medium diameter tubular body 2,
After the heat resistant core body 5 and the fluororesin powder 4 are arranged as described above, they are heated. The heating can be performed by, for example, the heater 6 arranged on the medium-diameter tubular body 2. The temperature at this time is not particularly limited as long as it is a temperature (softening temperature or higher or melting point or higher) at which the medium-diameter tubular body 2 can heat-shrink and the fluororesin powder 4 can be heat-sealed.
この加熱により、中径管状体２の加熱された領域は熱
収縮を生じ、一方、フッ素樹脂粉体４は軟化乃至溶融し
て熱融着性を示す。従って、中径管状体２と小径管状体
１、小径管状体１相互は熱収縮力を受けつつフッ素樹脂
粉体により融着接合される。また、図示されていない小
径管状体のもう一方の端部においても同様に作業を行な
う。このように小径管状体の両端部で接合を行なう場合
には、中径管状体として、小径管状体と略等長の長尺品
を用いることもできる。中径管状体が長尺品である場合
には、該管状体の全長にわたって熱収縮性を付与したも
のでもよく、また接合を行なう端部のみを熱収縮性とし
たものであってもよい。Due to this heating, the heated region of the medium-diameter tubular body 2 undergoes heat shrinkage, while the fluororesin powder 4 is softened or melted to exhibit heat fusion property. Therefore, the medium-diameter tubular body 2, the small-diameter tubular body 1, and the small-diameter tubular body 1 are fusion-bonded to each other by the fluororesin powder while receiving a heat shrinkage force. The same operation is performed on the other end of the small-diameter tubular body (not shown). When joining is performed at both ends of the small-diameter tubular body as described above, a long-sized product having substantially the same length as the small-diameter tubular body can be used as the medium-diameter tubular body. When the medium-diameter tubular body is a long product, it may have heat-shrinkability over the entire length of the tubular body, or may have heat-shrinkability only at the ends to be joined.
この方法においては、上記接合作業後に、中径管状体
外側上に、複数本のフッ素樹脂製の小径管状体を配置
し、該小径管状体の少なくとも一方の端部に、フッ素樹
脂から成る熱収縮性の大径管状体を外挿し、該外挿部内
に熱融着性を有するフッ素樹脂粉体を配置し、再びヒー
ター等により加熱する。この加熱により、小径管状体相
互、小径管状体と大径管状体が、大径管状体の熱収縮力
を受けつつフッ素樹脂粉体の熱融着により接合され、前
記第１図および第２図に示す構造の接合物品が得られ
る。この再加熱に際し、小径管状体内に耐熱性芯体を配
置することができ、また該芯体の長さやフッ素樹脂粉体
の配置領域の長さは前段加熱時のそれと同様に設定する
のが好ましいものである。In this method, after the above-mentioned joining work, a plurality of small-diameter tubular bodies made of fluororesin are arranged on the outside of the medium-diameter tubular body, and at least one end of the small-diameter tubular bodies is heat-shrinkable of fluororesin. A large-diameter tubular body is externally inserted, a fluororesin powder having heat fusion property is placed in the external insertion portion, and heated again by a heater or the like. By this heating, the small-diameter tubular bodies are joined together, and the small-diameter tubular bodies and the large-diameter tubular bodies are joined by the heat fusion of the fluororesin powder while receiving the heat shrinkage force of the large-diameter tubular bodies. A joined article having the structure shown in is obtained. At the time of this reheating, it is preferable that the heat-resistant core can be arranged in the small-diameter tubular body, and that the length of the core and the length of the arrangement region of the fluororesin powder are set to be the same as those at the time of the previous heating. It is a thing.
上記実例は中径管状体を１本用いた例であるが、本発
明の接合物品は中径管状体を複数本用いた構造とするこ
とができる。例えば、第４図は径の異なる２本の中径管
状体２を用いた実例を、第５図は３本の同径の中径管状
体２を用いた実例を示している。Although the above example is an example using one medium-diameter tubular body, the joined article of the present invention can have a structure using a plurality of medium-diameter tubular bodies. For example, FIG. 4 shows an example using two medium diameter tubular bodies 2 having different diameters, and FIG. 5 shows an example using three medium diameter tubular bodies 2 having the same diameter.
（実施例１） 以下、実施例により本発明を更に詳細に説明する。(Example 1) Hereinafter, the present invention will be described in more detail with reference to examples.
実施例 内径0.5mm、外径0.8mm、長さ1mのPTFE製小管状体80本
を用意し、これら小径管状体の一方の端部に内径13mm、
外径14mm、長さ5cmのPTFEから成る熱収縮性の中径管状
体（熱収縮率38％、熱収縮温度350℃）を外挿する。Example 0.5 mm inner diameter, 0.8 mm outer diameter, 80 small PTFE-made tubular body 1m in length is prepared, 13 mm inner diameter at one end of these small-diameter tubular body,
A heat-shrinkable medium-diameter tubular body (heat shrinkage rate 38%, heat shrink temperature 350 ° C) made of PTFE with an outer diameter of 14 mm and a length of 5 cm is extrapolated.
また、前記各小径管状体内には、外径0.48mm、長さ10
cmの丸棒状鉄製芯体を、中径管状体と小径管状体の間お
よび各小径管状体の間には、粒径約30μｍのPFA粉体
（融点305℃）を、中径管状体の外側にはヒーターを各
々配置する。なお、PFA粉体の配置領域の長さ（Ｄ3）は
約5cmとする。これら小径管状体、中径管状体、芯体、P
FA粉体およびヒーターの配置は第３図に示すのと同じで
ある。In addition, each of the small-diameter tubular bodies has an outer diameter of 0.48 mm and a length of 10
The PDA powder (melting point 305 ° C) with a particle diameter of about 30 μm was placed between the medium-diameter tubular body and the small-diameter tubular body, and the PFA powder (melting point 305 ° C) between the medium-diameter tubular body and the outer core-shaped tubular body. Each has a heater. The length (D 3 ) of the PFA powder placement area is about 5 cm. These small diameter tubular body, medium diameter tubular body, core body, P
The arrangement of FA powder and heater is the same as shown in FIG.
次に、ヒーターにより380℃の温度で10分間加熱し、
小径管状体相互、小径管状体と中径管状体をフッ素樹脂
粉体により融着接合して冷却する。更に、小径管状体の
他端部も同様にして融着接合する。Next, heat with a heater at a temperature of 380 ° C for 10 minutes,
The small-diameter tubular body, the small-diameter tubular body and the medium-diameter tubular body are fusion-bonded and cooled with a fluororesin powder. Further, the other end of the small-diameter tubular body is also fusion-bonded in the same manner.
次に、この融着品の外周部に前記と同じ寸法のPTFE製
小径管状体220本を略等間隔で配置し、これに内径18m
m、外径21mm、長さ6cmのPTFE製の熱収縮性大径管状体
（熱収縮率11％、熱収縮温度350℃を外挿する。また、
小径管状体の端部には前記と同寸法の芯体を挿入し、更
に、大径管状体と小径管状体の間および小径管状体の間
にはPFA粉体（粒径30μｍ）を、大径管状体の外側には
ヒーターを配置する。なお、PFA粉体の配置領域長さは
前記と同様5cmとする。Next, 220 small-diameter PTFE tubular bodies of the same size as described above are arranged on the outer peripheral portion of this fusion-bonded product at substantially equal intervals, and an inner diameter of 18 m
m, outer diameter 21 mm, length 6 cm made of PTFE heat-shrinkable large-diameter tubular body (heat shrinkage rate 11%, heat shrink temperature 350 ℃ extrapolated.
Insert a core of the same size as above into the end of the small-diameter tubular body, and further insert PFA powder (particle size 30 μm) between the large-diameter tubular body and the small-diameter tubular body and between the small-diameter tubular bodies. A heater is arranged outside the tubular body. The length of the area where the PFA powder is arranged is 5 cm as described above.
そして、ヒーターによる再加熱し（380℃、12分
間）、融着品の外周部に配置された小径管状体相互、小
径管状体と大径管状体を大径管状体の熱収縮力を作用さ
せながら、フッ素樹脂粉体により融着接合し、第１図お
よび第２図に示すと同構造のフッ素樹脂製接合物品を得
た。Then, it is reheated by a heater (380 ° C, 12 minutes), and the small-diameter tubular body and the small-diameter tubular body arranged on the outer periphery of the fusion-bonded product are made to exert the heat-shrinking force of the large-diameter tubular body. On the other hand, fusion bonding was performed with a fluororesin powder to obtain a fluororesin-bonded article having the same structure as shown in FIGS. 1 and 2.
この物品の接合部を切断し、PFA粉体による融着部を
目視観察したが、気泡は認められなかった。The joint portion of this article was cut, and the fused portion of the PFA powder was visually observed, but no bubbles were observed.
また、この物品の接合部における気密度をみるため大
径管状体の片端開口部に密栓し、他端開口部より5kg/cm
2の加圧空気を送入し、空気のモレを目視により観察し
た。その結果、空気モレは認められなかった。なお、こ
の際には、接合部を水中に保持して観察した。Also, to check the airtightness at the joint of this article, close the end of the large-diameter tubular body with one end, and open the other end with 5 kg / cm
The pressurized air of 2 was introduced and the leakage of air was visually observed. As a result, no air leak was observed. At this time, the joint was held in water for observation.
（発明の効果） 本発明は上記のように構成されており、中径管状体お
よび大径管状体を用いて小径管状体の端部を融着接合せ
しめたので、融着接合部には気泡発生は無く、強度が大
きく、液密性に優れている特徴を有する。(Effects of the Invention) The present invention is configured as described above, and since the ends of the small-diameter tubular body are fusion-bonded by using the medium-diameter tubular body and the large-diameter tubular body, bubbles are present in the fusion-bonded joint. It does not occur, has high strength, and has excellent liquid-tightness.
第１図は本発明に係るフッ素樹脂製接合物品の実例を示
す正面図、第２図は第１図に示す接合物品の側面図、第
３図は接合物品の製造法の実例を示す一部切欠断面図、
第４図および第５図は接合物品の他の実例を示す側面図
である。 １……小径管状体、２……中径管状体 ３……大径管状体、４……フッ素樹脂粉体FIG. 1 is a front view showing an example of a fluororesin-bonded article according to the present invention, FIG. 2 is a side view of the bonded article shown in FIG. 1, and FIG. 3 is a part showing an example of a method for manufacturing the bonded article. Cutaway sectional view,
4 and 5 are side views showing other examples of the joined article. 1 ... Small diameter tubular body, 2 ... Medium diameter tubular body 3 ... Large diameter tubular body, 4 ... Fluororesin powder
───────────────────────────────────────────────────── 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 Ｂ２９Ｌ 23:00 31:18 31:60 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location B29L 23:00 31:18 31:60
Claims (1)
とも一方の端部上に、フッ素樹脂製大径管状体が外挿さ
れると共に、小径管状体と大径管状体の間には中径管状
体が配置せしめられており、更に該端部において小径管
状体相互、小径管状体と中径管状体、小径管状体と大径
管状体が接合せしめられていることを特徴とするフッ素
樹脂接合物品。1. A fluororesin large-diameter tubular body is externally inserted onto at least one end of a plurality of fluororesin small-diameter tubular bodies, and a medium diameter is provided between the small-diameter tubular body and the large-diameter tubular body. A tubular body is arranged, and further, a small-diameter tubular body is joined to each other at the end, a small-diameter tubular body and a medium-diameter tubular body, and a small-diameter tubular body and a large-diameter tubular body are joined together. Goods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63139075A JP2566290B2 (en) | 1988-06-06 | 1988-06-06 | Fluororesin bonded article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63139075A JP2566290B2 (en) | 1988-06-06 | 1988-06-06 | Fluororesin bonded article |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01306226A JPH01306226A (en) | 1989-12-11 |
| JP2566290B2 true JP2566290B2 (en) | 1996-12-25 |
Family
ID=15236903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63139075A Expired - Lifetime JP2566290B2 (en) | 1988-06-06 | 1988-06-06 | Fluororesin bonded article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2566290B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5474994A (en) * | 1992-05-26 | 1995-12-12 | Recordati S.A., Chemical And Pharmaceutical Company | Bicyclic heterocyclic derivatives having α1 -adrenergic and 5HT1A |
| JP7420249B2 (en) * | 2020-06-08 | 2024-01-23 | Dic株式会社 | Tube unit, degassing module, and tube unit manufacturing method |
| WO2024101435A1 (en) * | 2022-11-11 | 2024-05-16 | Dic株式会社 | Tube unit, deaeration module, and method for producing tube unit |
-
1988
- 1988-06-06 JP JP63139075A patent/JP2566290B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01306226A (en) | 1989-12-11 |
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