JPH0529538B2 - - Google Patents
Info
- Publication number
- JPH0529538B2 JPH0529538B2 JP1161609A JP16160989A JPH0529538B2 JP H0529538 B2 JPH0529538 B2 JP H0529538B2 JP 1161609 A JP1161609 A JP 1161609A JP 16160989 A JP16160989 A JP 16160989A JP H0529538 B2 JPH0529538 B2 JP H0529538B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- heater
- tubes
- joints
- molten
- 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
- 239000011347 resin Substances 0.000 claims description 18
- 229920005989 resin Polymers 0.000 claims description 18
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 12
- 229910052731 fluorine Inorganic materials 0.000 claims description 12
- 239000011737 fluorine Substances 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 238000003466 welding Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
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
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/114—Single butt joints
- B29C66/1142—Single butt to butt joints
-
- 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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
- B29C65/1429—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface
- B29C65/1432—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation characterised by the way of heating the interface direct heating of the surfaces to be joined
-
- 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
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
- B29C66/5221—Joining tubular articles for forming coaxial connections, i.e. the tubular articles to be joined forming a zero angle relative to each other
-
- 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
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
- B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
- B29C66/91411—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
-
- 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
- B29C66/90—Measuring or controlling the joining process
- B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
- B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
-
- 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
-
- 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
- B29C66/73—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
- B29C66/73921—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 intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Electromagnetism (AREA)
- Toxicology (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
この発明は、例えば、PFA樹脂などのフツ素
系樹脂の溶融樹脂により一体形成された溶融フツ
素系樹脂製チユーブに関する。DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a molten fluororesin tube integrally formed with a molten fluororesin such as PFA resin.
(ロ) 従来の技術
従来、樹脂製の各チユーブを接続する場合、こ
れら各チユーブと同材質の樹脂製の管継手により
接続していた。(b) Prior Art Conventionally, when connecting tubes made of resin, the connections were made using pipe joints made of resin made of the same material as the tubes.
(ハ) 発明が解決しようとする問題点
しかし、上述のように２本の各チユーブを別部
材の管継手により接続した場合、チユーブ自体に
比べて継手部分の強度が構造的に弱くなり、配管
時における引張り力や曲げ応力に対して耐久性が
低く、或いは、流体の移送圧力や薬液の化学反応
による発熱作用等により継手部分にクリープが起
きやすく、継手部分のシール性が先行して低下
し、流体の漏洩が生じるという問題点を有してい
る。(c) Problems to be Solved by the Invention However, when two tubes are connected using separate pipe fittings as described above, the strength of the joints becomes structurally weaker than the tubes themselves, and the piping It has low durability against the tensile force and bending stress caused by the process, or the joint part tends to creep due to the transfer pressure of the fluid and the heat generation effect of the chemical reaction, and the sealing performance of the joint part deteriorates first. However, there is a problem in that fluid leakage occurs.
従来、このような問題点を解決するために、特
開昭51−4273号公報、特開昭52−18774号公報お
よび特開昭52−27483号公報に記載の如き樹脂製
チユーブが既に発明されている。 Conventionally, in order to solve such problems, resin tubes as described in JP-A-51-4273, JP-A-52-18774, and JP-A-52-27483 have already been invented. ing.
すなわち、上述の何れの公報に記載の樹脂製チ
ユーブもチユーブ端部をヒータに直接接触させ
て、チユーブ接合部を溶融させて一体化する手段
であつて、このように構成することで、チユーブ
自体と同等以上の強度を得ることができる効果が
ある反面、次に示す第一乃至第三の問題点があつ
た。 That is, the resin tube described in any of the above-mentioned publications is a means of bringing the end of the tube into direct contact with the heater to melt and integrate the tube joint, and by configuring it in this way, the tube itself Although it has the effect of being able to obtain a strength equivalent to or higher than that of , it has the following first to third problems.
第一に、チユーブ端部をヒータに直接接触させ
る構成であるから、溶融されたチユーブの接合端
部をヒータから引き離す時、ヒータに樹脂が融着
するので、樹脂チユーブとヒータとの間に糸状体
が発生し、このため、チユーブ溶着部内周側に細
い糸状部分が食み出し、流体の輸送中に、この糸
状体がちぎれて、ゴミとして流体中に混入する問
題点があつた。 First, since the tube end is in direct contact with the heater, when the joined end of the melted tube is pulled away from the heater, the resin is fused to the heater, so there is a thread-like bond between the resin tube and the heater. As a result, a thin thread-like part protrudes from the inner peripheral side of the tube weld, and this thread-like part breaks off during fluid transportation, causing a problem in that it gets mixed into the fluid as dust.
第二に、上述の糸状体が形成されるため、チユ
ーブ溶着部の内周側は滑らかさを欠き、マクロ的
に見ても凹凸の多い表面状態となり、この結果、
微小な液溜りやを生じやすく、例えば、超純水で
はバクテリアの発生を招き、IC等のレジスト液
では液溜りに溜つたレジスト液の変質や粘度変化
が発生し、これらのバクテリアおよび変質液は輸
送流体中にゴミとして混入する問題点があつた。 Secondly, due to the formation of the above-mentioned filaments, the inner peripheral side of the tube weld lacks smoothness, resulting in a surface with many irregularities even from a macroscopic perspective.
For example, ultrapure water can lead to the growth of bacteria, and resist liquids such as IC can cause deterioration and viscosity changes in the resist liquid that accumulates in the puddles.These bacteria and degenerate liquids can cause There was a problem of dirt getting mixed into the transportation fluid.
第三に、チユーブ端部を直接ヒータに接触させ
る関係上、ヒータを構成する材料やイオンが、チ
ユーブ溶融部へ移着し、チユーブの溶着部はチユ
ーブの構成材料とは全く異なる異物を含むことに
なり、このため、チユーブ表面またはその付近に
含まれたこれらの異物は、強酸、強アルカリの腐
蝕性の輸送流体（薬液）により、流体中へのイオ
ン溶出の原因となる問題点があつた。 Thirdly, because the end of the tube is brought into direct contact with the heater, the materials and ions that make up the heater are transferred to the melted part of the tube, and the welded part of the tube contains foreign matter that is completely different from the material that makes up the tube. Therefore, these foreign substances contained on or near the tube surface may cause ions to be leached into the fluid by corrosive transport fluids (chemicals) such as strong acids and strong alkalis. .
加えて、上述の第一乃至第三の理由により、例
えば半導体の製造工程などのように微細加工を必
要とする用途に上述の従来チユーブを使用する
と、ゴミや溶出イオンによる致命的な加工不良を
招く問題点があつた。 In addition, due to the first to third reasons mentioned above, if the conventional tube is used in applications that require microfabrication, such as in the semiconductor manufacturing process, it may cause fatal processing defects due to dust and eluted ions. A problem arose.
さらに、上述の従来手段を溶融フツ素樹脂チユ
ーブに適用した場合には、チユーブを直接ヒータ
に接触させた際、高温でのフツ素系樹脂の分解に
より、フツ素ガスが発生するので、ヒータの腐蝕
や作業者の健康上障害が発生し、またヒータにフ
ツ素系樹脂の融着が生じるので、ヒータ温度がフ
ツ素系樹脂の分解温度以下に低下するまで、フツ
素ガスの発生が続く問題点があつた。 Furthermore, when the above-mentioned conventional means is applied to a molten fluororesin tube, when the tube is brought into direct contact with a heater, fluorine gas is generated due to the decomposition of the fluororesin at high temperatures. This causes corrosion and health hazards for workers, and also causes fusion of fluorine resin to the heater, so fluorine gas continues to be generated until the heater temperature drops below the decomposition temperature of the fluorine resin. The dot was hot.
この発明は、チユーブ自体と同等以上の強度を
確保することができるのは勿論、糸状体の発生が
なく、溶着部内周面が滑らかで、またチユーブ表
面にヒータ側の異物が含まれることもなく、フツ
素ガスの発生をも確実に阻止することができる溶
融フツ素系樹脂製チユーブの提供を目的とする。 This invention not only can ensure strength equal to or higher than that of the tube itself, but also eliminates the generation of filaments, has a smooth inner circumferential surface of the welded part, and does not contain foreign matter from the heater side on the tube surface. The object of the present invention is to provide a tube made of molten fluorine-based resin that can reliably prevent the generation of fluorine gas.
(ニ) 問題点を解決するための手段
この発明は、溶融フツ素系樹脂製により形成し
た複数本のチユーブの接合部を加熱ヒータに対し
て１mm〜６mm間隔に隔てた非接触定位置に保持
し、上記加熱ヒータにより600℃〜800℃の温度で
各チユーブの接合部を所定時間加熱して0.5〜５
mm溶融した後、上記同一の溶融状態に溶融した各
チユーブの接合部を軸方向に圧接して一体的に溶
着した溶融フツ素樹脂製チユーブであることを特
徴とする。(d) Means for Solving the Problems This invention maintains the joints of a plurality of tubes made of molten fluororesin in fixed positions in a non-contact manner with respect to the heater at intervals of 1 mm to 6 mm. Then, heat the joint of each tube at a temperature of 600°C to 800°C for a predetermined period of time using the above heater to give a temperature of 0.5 to 5
It is characterized in that it is a tube made of molten fluororesin, in which the joint portions of the tubes melted to the same molten state are axially pressed together and welded together after being melted.
(ホ) 作用
この発明によれば、加熱ヒータに対して１mm〜
６mmの間隔に非接触状態に離間させた各チユーブ
の接合部を、加熱ヒータにより600℃〜800℃の温
度で加熱して0.5〜５mm溶融させ、これら同一溶
融状態に溶融した各チユーブの接合部を圧接する
と、各接合部は均一に融合して〓間無く一体的に
融着される。(E) Effect According to this invention, 1 mm to 1 mm to the heater
The joints of each tube separated at 6 mm intervals in a non-contact state are heated at a temperature of 600°C to 800°C with a heater to melt 0.5 to 5 mm, and the joints of each tube are melted to the same molten state. When they are pressed together, the joints are uniformly fused and fused together.
(ヘ) 発明の効果
このように、複数本の各チユーブを〓間無く一
体的に溶着して溶融フツ素系樹脂チユーブを形成
しているので、溶着部はチユーブ自体と同等以上
の強度となり、配管時における引張り力や曲げ応
力に対する耐久性が向上し、且つ、流体の移送圧
力や薬液の化学反応による発熱作用等により溶着
部が先に破断するのを接極的に防止することがで
き、流体移送時におけるシール性が向上し、配管
資材として高い信頼性が得られる。(f) Effects of the invention In this way, since the plurality of tubes are welded together seamlessly to form a molten fluororesin tube, the strength of the welded portion is equal to or higher than that of the tube itself, It has improved durability against tensile force and bending stress during piping, and can proactively prevent welded parts from breaking first due to fluid transfer pressure and heat generation due to chemical reactions of chemicals. It improves sealing performance during fluid transfer and provides high reliability as a piping material.
しかも、チユーブの接合部を加熱ヒータに対し
て非接触状態下にて加熱するので、糸状体の発生
がなく、溶着部内周面が滑らかで、またチユーブ
表面にヒータ側の異物が含まれることもなく、フ
ツ素ガスの発生をも確実に阻止することができる
効果がある。 Moreover, since the joint of the tube is heated without contact with the heater, there is no generation of filaments, the inner circumferential surface of the welded part is smooth, and there is no possibility that foreign matter from the heater side may be included on the tube surface. This has the effect of reliably preventing the generation of fluorine gas.
(ト) 実施例
この発明の一実施例を以下図面に基づいて詳述
する。(g) Embodiment An embodiment of the present invention will be described in detail below based on the drawings.
図面は溶融フツ素系樹脂の一例としてテトラフ
ルオロエチレン−パ−フルオロアルキルビニルエ
ーテル共重合体（PFA樹脂）により一体化形成
した樹脂製チユーブを示し、第１図及び第２図に
おいて、この溶融フツ素系樹脂製チユーブ１、
PFA樹脂製の２本の各チユーブ２，２を一体的
に溶着して形成している。 The drawings show a resin tube integrally formed from tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer (PFA resin) as an example of molten fluorine-based resin. resin tube 1,
It is formed by integrally welding two tubes 2, 2 made of PFA resin.
上述の各チユーブ２，２を溶着する手段として
は、本出願人が既に発生した溶着装置（特願昭63
−262168号公報参照）がある。 As a means for welding the above-mentioned tubes 2, 2, the welding device already developed by the present applicant (Japanese Patent Application No. 63
-Refer to Publication No. 262168).
この溶着装置（図示省略）を用いて、例えば、
外径寸法が19mm、肉厚が1.6mmの２本の各チユー
ブ２，２を溶着する場合、第３図に示すように、
軸方向に対して直角に切断した各チユーブ２，２
の各接合端部２ａ，２ａを、装置中央に配設した
加熱ヒータ３の両側面に離間対向してそれぞれ配
置し、これら各チユーブ２，２の各接合端部２
ａ，２ａを、加熱ヒータ３の両側面に対して対向
間隔Ａ，Ａを２〜３mm間隔に隔てた非接触の定位
置に保持する。 Using this welding device (not shown), for example,
When welding two tubes 2, 2 with an outer diameter of 19 mm and a wall thickness of 1.6 mm, as shown in Figure 3,
Each tube 2, 2 cut at right angles to the axial direction
The joint ends 2a, 2a of each of the tubes 2, 2 are arranged facing away from each other on both sides of the heater 3 disposed in the center of the device, and the joint ends 2a of each of these tubes 2, 2
a, 2a are held in fixed positions in a non-contact manner with facing distances A, A being 2 to 3 mm apart from both side surfaces of the heater 3.
次に、加熱ヒータ３に通電して、溶融フツ素系
樹脂製の各チユーブ２，２の各接合端部２ａ，２
ａが溶融する600℃〜800℃の加熱範囲内で所定時
間加熱する。 Next, the heater 3 is energized, and each joint end 2a, 2 of each tube 2, 2 made of molten fluorine resin is heated.
Heating is performed for a predetermined time within the heating range of 600°C to 800°C where a is melted.
例えば、加熱ヒータ３の加熱温度を750℃に保
持し、その幅射熱により各チユーブ２，２の各接
合端部２ａ，２ａを30sec〜40sec間加熱して、こ
れら各接合端部２ａ，２ａを２mm〜３mm程度溶融
させる。 For example, the heating temperature of the heater 3 is maintained at 750° C., and each joint end 2a, 2a of each tube 2, 2 is heated for 30 seconds to 40 seconds by the radiant heat, and each joint end 2a, 2a is heated for 30 seconds to 40 seconds. Melt about 2 mm to 3 mm.
この後、第４図に示すように、２本の各チユー
ブ２，２の対向間から加熱ヒータ３を取り除き、
これら各チユーブ２，２を矢印方向に移動して溶
融した各接合端部２ａ，２ａを接触させる。 After that, as shown in FIG. 4, the heater 3 is removed from between the two opposing tubes 2, 2.
These tubes 2, 2 are moved in the direction of the arrow to bring the melted joint ends 2a, 2a into contact with each other.
さらに、第５図に示すように、これら各チユー
ブ２，２の各接合端部２ａ，２ａを矢印方向に圧
接して、第４図に示す接触時点の溶着部２ｂの寸
法Ｂから、第５図に示す圧接時点の溶着部２ｂの
寸法Ｃを減算した１mm〜1.5mmの圧接寸法だけ押
し付けることで、第２図に示すように、同一溶融
状態に溶融した各チユーブ２，２の各接合端部２
ａ，２ａは均一に融合し、〓間無く一体化に溶着
される。 Furthermore, as shown in FIG. 5, the joint ends 2a, 2a of these tubes 2, 2 are pressed together in the direction of the arrow, and from the dimension B of the welded part 2b at the time of contact shown in FIG. By pressing only the pressure welding dimension of 1 mm to 1.5 mm, which is obtained by subtracting the dimension C of the welded part 2b at the time of pressure welding shown in the figure, each joint end of each tube 2, 2 is melted to the same melted state as shown in FIG. 2. Part 2
A and 2a are uniformly fused and welded into one piece without any delay.
このように２本の各チユーブ２，２を一体的に
溶着して溶融フツ素系樹脂製チユーブ１を形成し
ているので、引張り試験において、溶着部２ｂ約
125Kgの引張り力まで耐えることができ、溶着部
２ｂの引張り強度はチユーブ２自体と同等以上の
強度となり、配管時における引張り力や曲げ応力
に対する耐久性が向上し、且つ、流体の移送圧力
や薬液の化学反応による発熱作用等により溶着部
２ｂが先に破断するのを積極的に防止することが
でき、流体移送時におけるシール性が向上し、配
管資材として高い信頼性が得られる。 Since the two tubes 2, 2 are integrally welded together to form the molten fluorine resin tube 1, in a tensile test, the welded portion 2b approximately
It can withstand up to a tensile force of 125 kg, and the tensile strength of the welded part 2b is equal to or higher than that of the tube 2 itself, improving durability against tensile force and bending stress during piping, and also withstands fluid transfer pressure and chemical solutions. It is possible to proactively prevent the welded portion 2b from breaking first due to the heat generation effect caused by the chemical reaction, etc., and the sealing performance during fluid transfer is improved, resulting in high reliability as a piping material.
しかも、チユーブ２，２の接合端部２ａ，２ａ
を加熱ヒータ３に対して非接触状態下にて加熱す
るので、従来のような糸状体の発生がなく、溶着
部２ｂ内周面が滑らかで、またチユーブ２，２表
面およびその近傍にヒータ３側の異質物が含まれ
ることもなく、フツ素ガスの発生をも確実に阻止
することができる効果がある。 Moreover, the joint ends 2a, 2a of the tubes 2, 2
Since it is heated in a non-contact state with respect to the heater 3, there is no generation of filaments as in the conventional case, and the inner circumferential surface of the welded part 2b is smooth. This has the effect of preventing the inclusion of foreign matter from the outside and reliably preventing the generation of fluorine gas.
この発明の構成と、上述の実施例との対応にお
いて、
この発明の接合部は、実施例の接合端部２ａに
対応するも、
この発明は上述の実施例の構成のみに限定され
るものではない。 Regarding the correspondence between the structure of this invention and the above-described embodiment, the joint portion of this invention corresponds to the joint end portion 2a of the embodiment, but this invention is not limited to the structure of the above-described embodiment. do not have.
図面はこの発明の一実施例を示し、第１図は溶
融フツ素系樹脂製チユーブの溶着部斜視図、第２
図は溶融フツ素樹系脂製チユーブの溶着部縦断側
面図、第３図はチユーブの加熱状態を示す側面
図、第４図はチユーブの接触状態を示す側面図、
第５図はチユーブの圧接状態を示す側面図であ
る。
１……溶融フツ素系樹脂製チユーブ、２……チ
ユーブ、２ａ……接合端部、２ｂ……溶着部、３
……加熱ヒータ。
The drawings show one embodiment of the present invention, and FIG.
The figure is a longitudinal cross-sectional side view of the welded part of the tube made of molten fluororesin, FIG. 3 is a side view showing the heating state of the tube, and FIG. 4 is a side view showing the contact state of the tube.
FIG. 5 is a side view showing the tube in a pressed state. DESCRIPTION OF SYMBOLS 1... Molten fluororesin tube, 2... Tube, 2a... Joint end, 2b... Welded part, 3
...heater.
Claims (1)
ユーブの接合部を加熱ヒータに対して１mm〜６mm
間隔に隔てた非接触定位置に保持し、 上記加熱ヒータにより600℃〜800℃の温度で各
チユーブの接合部を所定時間加熱して0.5〜５mm
溶融した後、 上記同一溶融状態に溶融した各チユーブの接合
部を軸方向に圧接して一体的に溶着した 溶融フツ素系樹脂製チユーブ。[Claims] 1. The joint portion of a plurality of tubes formed of molten fluororesin is 1 mm to 6 mm relative to the heater.
The joints of each tube are held at fixed positions separated by intervals without contact, and the joints of each tube are heated at a temperature of 600℃ to 800℃ for a predetermined period of time using the above-mentioned heater to heat the joints of 0.5 to 5 mm.
A tube made of molten fluorine resin, which is integrally welded by pressing the joints of the tubes fused in the same molten state in the axial direction after being melted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1161609A JPH0326530A (en) | 1989-06-23 | 1989-06-23 | Synthetic resin tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1161609A JPH0326530A (en) | 1989-06-23 | 1989-06-23 | Synthetic resin tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0326530A JPH0326530A (en) | 1991-02-05 |
| JPH0529538B2 true JPH0529538B2 (en) | 1993-04-30 |
Family
ID=15738415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1161609A Granted JPH0326530A (en) | 1989-06-23 | 1989-06-23 | Synthetic resin tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0326530A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102620420B1 (en) * | 2019-09-24 | 2024-01-03 | 다이킨 고교 가부시키가이샤 | weld body |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS514273A (en) * | 1974-06-29 | 1976-01-14 | Mitsubishi Plastics Ind | KOSHITSUEN KABINIRUKANNO BATSUTOJUCHAKUHOHO |
| JPS5218774A (en) * | 1975-08-06 | 1977-02-12 | Mitsubishi Plastics Ind | Butt welding method for thermoplastic resin moldings |
| JPS5227483A (en) * | 1975-08-28 | 1977-03-01 | Mitsubishi Chem Ind | Method of butttwelding pipe |
| JPS6120725A (en) * | 1984-07-09 | 1986-01-29 | フリューアロウェア インコーポレイテッド | Welding fluoropolymer pipe and pipe joint |
| JPH0343054A (en) * | 1989-07-11 | 1991-02-25 | Mase Bankin Seisakusho:Kk | Method for cutting and packing of bean curd and apparatus therefor |
| JPH0476773A (en) * | 1990-07-19 | 1992-03-11 | Nec Corp | Map retrieving device |
-
1989
- 1989-06-23 JP JP1161609A patent/JPH0326530A/en active Granted
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS514273A (en) * | 1974-06-29 | 1976-01-14 | Mitsubishi Plastics Ind | KOSHITSUEN KABINIRUKANNO BATSUTOJUCHAKUHOHO |
| JPS5218774A (en) * | 1975-08-06 | 1977-02-12 | Mitsubishi Plastics Ind | Butt welding method for thermoplastic resin moldings |
| JPS5227483A (en) * | 1975-08-28 | 1977-03-01 | Mitsubishi Chem Ind | Method of butttwelding pipe |
| JPS6120725A (en) * | 1984-07-09 | 1986-01-29 | フリューアロウェア インコーポレイテッド | Welding fluoropolymer pipe and pipe joint |
| JPH0343054A (en) * | 1989-07-11 | 1991-02-25 | Mase Bankin Seisakusho:Kk | Method for cutting and packing of bean curd and apparatus therefor |
| JPH0476773A (en) * | 1990-07-19 | 1992-03-11 | Nec Corp | Map retrieving device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0326530A (en) | 1991-02-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0167870B1 (en) | Welding fluoropolymer pipe and fittings | |
| TWI537506B (en) | Fused joint and melting method, melting device, melt joint, resin tube melting device and melting method | |
| KR0150425B1 (en) | Device for detecting the variations of the physical state of the thermoplastic material of a socket for joining pipe | |
| JPH0529538B2 (en) | ||
| US5901753A (en) | Flexibility support assembly for double-containment piping system | |
| JP2004216859A (en) | Welding method and device for thermoplastic resin molded article having tubular end and piping body welded by these | |
| JPS60259898A (en) | Heat exchanger made from fluorine resin and manufacture thereof | |
| JPH06226854A (en) | Welding of plastic pipes | |
| JPH07317984A (en) | Jointing method for pipe and joint, and pipe for piping | |
| JPH11227051A (en) | Method for connecting thermoplastic resin tube | |
| JPH06174171A (en) | Connecting structure for resin tube and connecting method thereof | |
| JP4071987B2 (en) | Thermofusion bonding auxiliary material for thermoplastic resin tube and method for bonding thermoplastic resin tube | |
| JP2003266544A (en) | Tubular member joining method | |
| JPH0857963A (en) | Butt welding method for thermoplastic resin tube material | |
| JP2000110981A (en) | Joining method for resin pipe | |
| JP7210374B2 (en) | Drain pipe joint and its manufacturing method | |
| JPH03110134A (en) | Pipe body and joining method thereof | |
| JPH02266191A (en) | Joining method for plastic pipe | |
| JPH07304101A (en) | Butt welding method of thermoplastic resin pipe materials | |
| JP2004176739A (en) | Joint structure of thermoplastic resin tube | |
| JPH0631656B2 (en) | Pipe material and manufacturing method thereof | |
| KR20220005216A (en) | heat melting method for synthetic resin pipe and Melting structure of synthetic resin pipe | |
| JPH0478396A (en) | Joint tube and manufacture thereof | |
| JPH1044244A (en) | Method for gas fusion of heat fusible member together and gas fusion apparatus used for it | |
| JPH0857964A (en) | Butt welding method for thermoplastic resin tube material |