JP3388939B2 - Hot air welding of synthetic resin molded products - Google Patents
Hot air welding of synthetic resin molded productsInfo
- Publication number
- JP3388939B2 JP3388939B2 JP11119195A JP11119195A JP3388939B2 JP 3388939 B2 JP3388939 B2 JP 3388939B2 JP 11119195 A JP11119195 A JP 11119195A JP 11119195 A JP11119195 A JP 11119195A JP 3388939 B2 JP3388939 B2 JP 3388939B2
- Authority
- JP
- Japan
- Prior art keywords
- welding
- resin
- hot air
- resin molded
- molded product
- 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 - Fee Related
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
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/84—Specific machine types or machines suitable for specific applications
- B29C66/861—Hand-held tools
-
- 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
- B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
- B29C65/12—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined and welding bar
-
- 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
- B29C65/82—Testing the joint
- B29C65/8207—Testing the joint by mechanical methods
- B29C65/8215—Tensile tests
-
- 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
- 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
- B29C66/116—Single bevelled joints, i.e. one of the parts to be joined being bevelled in the joint area
- B29C66/1162—Single bevel to bevel joints, e.g. mitre 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
- B29C66/43—Joining a relatively small portion of the surface of said articles
-
- 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
- B29C66/737—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 state of the material of the parts to be joined
- B29C66/7377—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 state of the material of the parts to be joined amorphous, semi-crystalline or crystalline
- B29C66/73771—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 state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being amorphous
- B29C66/73772—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 state of the material of the parts to be joined amorphous, semi-crystalline or crystalline the to-be-joined area of at least one of the parts to be joined being amorphous the to-be-joined areas of both parts to be joined being amorphous
-
- 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
-
- 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
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
-
- 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
- B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
- B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
-
- 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
-
- 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
- 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
- B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
- B29C65/12—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined and welding bar
- B29C65/125—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined and welding bar characterised by the composition of the welding bar
-
- 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
- B29C66/9161—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 heat or the thermal flux, i.e. the heat flux
- B29C66/91651—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 heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating
- B29C66/91653—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 heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating by controlling or regulating the voltage, i.e. the electric potential difference or electric tension
-
- 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
- B29C66/9161—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 heat or the thermal flux, i.e. the heat flux
- B29C66/91651—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 heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating
- B29C66/91655—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 heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating by controlling or regulating the current intensity
-
- 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
- B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
- B29C66/929—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、化学設備、下水処理設
備、空調設備、機械電気部品その他の工業材料用ないし
公告展示用などとして比較的厚肉で、且つ、非晶質のポ
リテレフタル酸エステル共重合体から成る樹脂成形品を
溶接する方法に関する。
【０００２】
【従来の技術】ポリエチレンテレフタレート系樹脂は、
機械的強度が比較的高く、成形加工性が良好であるが、
一般に結晶性で厚肉品では透明性が得難く、また耐衝撃
性に劣る欠点があり、用途が制限されていたが、非晶質
のポリテレフタル酸エステル共重合体の樹脂の出現によ
り、雑貨用あるいは公告展示用板材として、更には工業
材料として、使用可能な用途が開発されつつあり、透光
性又は非透光性で種々の厚肉の板材その他の樹脂成形品
が利用可能になっている。
【０００３】従来の非晶質のポリテレフタル酸エステル
共重合体の樹脂は、フィルムないし薄肉のシートとして
供給され利用されており、シートの接合方法として、接
着法の他、超音波溶接法、高周波溶接法などの溶接法が
知られていた。
【０００４】しかしながら、肉厚の大きい板材や異形断
面の樹脂板を工業用その他の用途に利用しようとする
と、広幅・大型の製品に溶接加工したり、構造物に溶接
組立てする必要が生じる。このような樹脂成形品の溶接
に際して、従来の上記溶接法は、主に０．５ｍｍ以下の
薄物シートの重ね合わせ溶接に適した方法であって、２
ｍｍ以上の厚肉板では、融着時間を長くしても融着が困
難であり、重ね合わせ溶接であるので製品に段差を生
じ、また、融着用の金型を必要とすることから複雑な形
状の製品に対しては溶接が困難で、さらに、小ロットの
製品の組立に使用するには不向きであった。
【０００５】他方、従来、塩化ビニル樹脂等の熱可塑性
樹脂の溶接方法として、溶接棒を使用して熱風により溶
接する方法がある。この熱風溶接法は、適切な温度の熱
風を用い、しかも溶接棒に適切な押圧力を付加しない
と、充分な溶接強度が得られないので、溶接組立をした
製品が溶接部で破損するという問題が知られている。し
かし、非晶質のポリテレフタル酸エステル共重合体の樹
脂に対して熱風溶接の可能性や、熱風温度・溶接棒の押
圧力等の溶接条件は知られていなかった。
【０００６】本発明は、上記問題に鑑み、非晶質のポリ
テレフタル酸エステル共重合体の比較的厚肉の樹脂成形
品に適した溶接法を提供しようとするものである。
【０００７】
【解決手段とその作用】本発明の樹脂成形品の溶接法
は、ポリエチレンテレフタレートを基本構造とした非晶
質のポリテレフタル酸エステル共重合体から成る樹脂成
形品の熱風溶接方法であって、該樹脂成形品の溶接部と
上記共重合体の樹脂の溶接棒とに温度１８０〜２２０℃
の熱風を吹き付けて該樹脂成形品を溶接することを特徴
とする。
【０００８】この溶接法においては、溶接中に溶接棒を
０．７〜１．０ｋｇｆの押圧力で成形品の溶接部に押し
付ける方法が採用される。
【０００９】熱風溶接の対象となる樹脂成形品と溶接棒
は、ポリエチレンテレフタレートを基本構造とした非晶
質のポリテレフタル酸エステル共重合体から成るもので
あるが、このような共重合体には、テレフタル酸と、共
重合成分としてエチレングリコール及び１，４−シクロ
ヘキサンジメタノールとの共重合体があり、特に、モル
比で、１，４−シクロヘキサンジメタノール１部に対し
てエチレングリコール３〜４部の割合の組成を有するも
のが、利用される。この組成のものは、原料樹脂の溶融
後に板材に成形する際に通常の冷却速度でも結晶化しな
いので、樹脂成形品は非晶質となり、他に着色材を含ま
なければ、樹脂成形品は透明となる。
【００１０】溶接棒も上記共重合体の樹脂で成形するの
で、その溶融成形過程で同様に溶接棒は非晶質となり、
透明となる。従って、溶接の際の溶接部の溶着した樹脂
も冷却後は、同様に非晶質で透明となる。
【００１１】本発明の溶接法は、熱風溶接を使用するも
ので、樹脂成形品の溶接部と、上記共重合体の樹脂の溶
接棒とに熱風を吹き付けて、樹脂成形品の溶接部と溶接
棒とを溶融し、溶接部に溶着充填するので、冷却後は、
一体に接合される。通常は、接合すべき２つの樹脂成形
品の間に線状に溶接部を設け、溶接部に溶接棒を板面に
ほぼ垂直に立てて押圧力を付加し、溶接棒の溶接部との
接触部周辺に熱風を供給して加熱し、溶接棒を溶かしな
がら溶接部の方向に沿って移動させる。
【００１２】熱風温度を１８０〜２２０℃の範囲とする
が、１８０℃未満であると、上記共重合体樹脂の溶接
棒、樹脂成形品は共に溶着可能な程度まで溶融しないの
で、溶接できない。他方、２２０℃を越えると早く溶け
すぎて上記の押圧力を付加できないので、溶接強度が小
さくなり、溶接部の形状・外観も悪く、作業性も悪くな
る。上記温度範囲で、溶接強度と外観の点からは１８０
〜２００℃の範囲で溶接するのが好ましい。作業性の点
から２００〜２２０℃の温度範囲が好ましい。
【００１３】樹脂成形品の溶接部に対する溶接棒の押圧
力を０．７〜１．０ｋｇｆとするが、この押圧力により
溶接部に圧力が加わり、必要な溶接強度が得られる。押
圧力が０．７ｋｇｆより低いと、溶接棒と成形品の溶接
部との溶融樹脂が相互溶解不充分となり、気泡が残留し
てピンホールを生じ、溶着不足となり、他方、１．０ｋ
ｇｆを越えると、溶融樹脂が溶接部からはみ出して、十
分充填しなくなり、いずれにおいても溶接強度が小さく
なる。
【００１４】この条件で、樹脂成形品の厚みが１．５ｍ
ｍ以上の溶接が可能であり、溶接棒としては、丸棒形状
であるシングル溶接棒の直径２〜４ｍｍのものが適当で
あるが、溶接量を高めるために、まゆ型のダブル溶接棒
や三角形状のトリプル溶接棒が利用できる。
【００１５】熱風供給手段としては、モータ駆動の送風
ブロワーの内部に電熱ヒーターを配置して、空気出口を
ノズルで絞る構造のものが利用される。空気供給量と電
熱ヒーターへの供給電力とから、所要の熱風量と上記温
度範囲が制御できるものであればよい。例示すれば、熱
風量は５０ｌ／ｍｉｎ程度とし、熱風温度は、電熱ヒー
ターへの電圧又は電流を可変調節して行う。
【００１６】樹脂成形品と溶接棒には、上記非晶質のポ
リテレフタル酸エステル共重合体の樹脂中に紫外線吸収
剤が添加されてもよい。これにより長期間の紫外線吸収
に伴う強度劣化や変色が防止でき、屋外で長期使用中の
母材と溶接部溶着樹脂の両方で耐候性が保証される。紫
外線吸収剤としては、ベンゾフェノン誘導体やベンゾト
リアゾール誘導体が使用され、その添加量は、０．０５
〜５．０重量％とするのがよい。
【００１７】また、樹脂成形品には、上記の非晶質のポ
リテレフタル酸エステル共重合体の樹脂で基材を構成
し、該基材の片面又は両面に上記の紫外線吸収剤が添加
されたアクリル系樹脂、特にポリメチルメタクリレート
の薄い樹脂被覆層を形成したものも被溶接材料に使用で
きる。この場合は、基材の樹脂には紫外線吸収剤を含ま
ぬようにしてよいが、溶接棒には上記の紫外線吸収剤を
含む上記の非晶質のポリテレフタル酸エステル共重合体
の樹脂で成形したものを使用し、これにより溶接後の溶
着樹脂に耐候性を付与することができる。
【００１８】溶接すべき樹脂成形品の組合せは、樹脂板
同士や、樹脂板とアングルやチャンネル等の溶接も行わ
れ、アングルやチャンネル同士やパイプ同士の溶接にも
利用できる。また。突き合わせ溶接、重ね溶接、隅肉溶
接等組合せに制限はなく、また、溶接姿勢も、下向き、
立向き、横向き、上向きのいずれも可能である。
【００１９】
【実施例】図１には、本発明の溶接法に使用する熱風供
給装置とその溶接の態様を示している。これは、非晶質
のポリテレフタル酸エステル共重合体樹脂板１ａ、１ｂ
の突き合わせ溶接の例で、溶接部３は、樹脂板１ａ、１
ｂの端縁を切削して、開先形状としてある。
【００２０】熱風供給装置には、握持操作型の熱風ブロ
ワー４を使用しており、ブロワー本体４０の後部に送風
用の回転羽根４５をモータ（不図示）により回転させ、
その前の送風路に配置した電熱線４４に通電することに
より、空気を加熱し、その前方のノズル部４１で管路を
絞って、出口４２から所定温度の熱風が所定流量で送出
されるようになっている。
【００２１】溶接棒２を垂直に立てながら溶接部３に押
し当てて、熱風ブロワー４のノズル部４１の熱風出口４
２を、溶接部３と溶接棒２の下部とに向けて熱風を吹き
つけて、両者を同時に加熱し、溶融樹脂２１を溶接部３
の開先の開口部に充填溶着させるように溶接棒２を下方
に加圧調節しながら、順次溶接棒２を溶接部３に沿って
前方に移動させる。溶融樹脂２１は、冷却して溶着樹脂
２２となり、母材の樹脂板１ａ、１ｂを強固に接合す
る。溶着樹脂２２はそのままにするか、又は、溶接部が
樹脂板１ａ、１ｂの表面と面一となるように溶着樹脂２
２の表面余盛を切削ないし研削して切除する。
【００２２】次に、上記の溶接法により行った溶接試験
結果を示す。樹脂板は、非晶質のポリテレフタル酸エス
テル共重合体樹脂として、ポリエチレンテレフタレート
のエチレングリコール成分の一部を１，４−シクロヘキ
サンジメタノールに置換した構造のイーストマンケミカ
ル社製造の商品名「ＫＯＤＡＲ ＰＥＴＧ１４４７３」
（以下単に、ＰＥＴＧという）を押出成形法により、板
厚３．０ｍｍの樹脂板に成形したものを使用した。溶接
棒は、同じくＰＥＴＧを押出成形により、直径３．０ｍ
ｍの丸棒にして、使用した。
【００２３】上記の樹脂板２枚を、両側に３５°の角度
の開先を設けて水平面に突き合せて、上記溶接棒によ
り、下向き姿勢で溶接した。熱風ブロワーの熱風量を５
０ｌ／ｍｉｎの一定として、その熱風温度を１６０〜２
４０℃の範囲で４水準に分けて、熱風を吹き付け、この
際、溶接棒を手で保持して、溶接棒を押圧力０．７〜
１．０ｋｇｆで溶接棒に常時押し付けて溶接を行なっ
た。熱風温度は、上記のノズル部４１の熱風出口４２で
測定した。
【００２４】溶接ができた試料については、溶接部を含
む引張試験片を切り出して、溶接部の引張強度を測定し
て、溶接強度とした（ＪＩＳ Ｚ３８３１に準拠）。試
験結果を表１にまとめてある。表中の溶接効率は、母材
の引張強度に対する溶接強度の比率を表している。
【００２５】
【表１】
【００２６】表１の結果から判るように、熱風温度１８
０℃以下では、溶接棒自体が溶融せず、溶接不能であっ
た。２２０℃を越えると、溶接棒が早く溶けすぎて、溶
接棒による所定の押圧力が付加できず、溶接強度が低下
し、さらに、溶融樹脂が溶接棒より大きくはみ出し、且
つ、その上面も凹凸となって外観が悪くなり、一定のス
ピードで溶接することができなくなり、作業性も低下し
ている。
【００２７】１８０〜２２０℃の温度範囲では、樹脂板
と溶接棒とが適度に溶けて押圧力を付加できるので、樹
脂板と溶接棒とが溶け合っており、８０％以上の高い溶
接効率が得られ、溶融樹脂が溶接棒より少しはみ出す程
度の溶接状態となり、外観も良好で、作業性も良好であ
った。特に、１８０〜２００℃の範囲が溶着樹脂の外
観、作業性とも良好で、溶接強度も高く、溶接効率もよ
い。他方、熱風温度を２００〜２２０℃に上げると、溶
接速度を高めることができるので、溶接作業の能率が向
上する利点がある。
【００２８】
【発明の効果】本発明の非晶質のポリテレフタル酸エス
テル共重合体を対象とした樹脂成形品の溶接法は、溶接
部と溶接棒の最適熱風温度で、熱風溶接をするので、溶
接の作業性が高く、溶着樹脂の外観も良好で、溶接強度
も高く、更に溶接効率も優れている。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a relatively thick wall for use in chemical equipment, sewage treatment equipment, air conditioning equipment, mechanical and electrical parts and other industrial materials or for public notice displays. The present invention also relates to a method for welding a resin molded product made of an amorphous polyterephthalate copolymer. [0002] Polyethylene terephthalate resin is
Although the mechanical strength is relatively high and the moldability is good,
In general, it is difficult to obtain transparency in thick crystalline products, and it has poor impact resistance.Therefore, its use has been limited.However, the appearance of amorphous polyterephthalate copolymer resin has led to miscellaneous goods. Applications that can be used as plate materials for public use or for public notice, and also as industrial materials are being developed, and various translucent or non-translucent thick plate materials and other resin molded products have become available. I have. [0003] Conventional amorphous polyterephthalate copolymer resins are supplied and used as films or thin sheets. In addition to bonding methods, ultrasonic welding, high-frequency welding, and the like can be used. Welding methods such as welding methods were known. [0004] However, when a thick plate material or a resin plate having an irregular cross section is to be used for industrial or other purposes, it is necessary to weld it to a wide and large product or to weld it to a structure. In welding such a resin molded product, the above-mentioned conventional welding method is a method suitable mainly for lap welding of a thin sheet having a thickness of 0.5 mm or less.
For thick plates of mm or more, it is difficult to fuse even if the fusion time is lengthened, and there is a step difference in the product due to lap welding, and a complicated mold is required because a fusion mold is required. It is difficult to weld a shaped product, and it is not suitable for use in assembling a product of a small lot. On the other hand, conventionally, as a method of welding a thermoplastic resin such as a vinyl chloride resin, there is a method of welding with a hot air using a welding rod. In this hot air welding method, sufficient welding strength cannot be obtained unless hot air of an appropriate temperature is used and an appropriate pressing force is not applied to the welding rod. It has been known. However, the possibility of hot air welding to the amorphous polyterephthalate copolymer resin and the welding conditions such as hot air temperature and welding rod pressing force have not been known. SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a welding method suitable for a relatively thick resin molded product of an amorphous polyterephthalate copolymer. The method for welding a resin molded article of the present invention is a hot-air welding method for a resin molded article comprising an amorphous polyterephthalate copolymer having a basic structure of polyethylene terephthalate. The temperature of the welded portion of the resin molded article and the welding rod of the resin of the copolymer is 180 to 220 ° C.
The hot air is blown to weld the resin molded product. In this welding method, a method is employed in which a welding rod is pressed against a welded portion of a molded product with a pressing force of 0.7 to 1.0 kgf during welding. The resin molded article and the welding rod to be subjected to hot-air welding are made of an amorphous polyterephthalate copolymer having a basic structure of polyethylene terephthalate. A copolymer of terephthalic acid and ethylene glycol and 1,4-cyclohexane dimethanol as a copolymer component, and in particular, a molar ratio of ethylene glycol 3 to 4 with respect to 1 part of 1,4-cyclohexane dimethanol. Those having a composition of parts by weight are used. Since the resin of this composition does not crystallize even at a normal cooling rate when it is molded into a plate after the raw material resin is melted, the resin molded product becomes amorphous, and if no other coloring material is contained, the resin molded product is transparent. Becomes [0010] Since the welding rod is also formed of the above-mentioned copolymer resin, the welding rod similarly becomes amorphous during the melt-forming process.
Be transparent. Therefore, the resin deposited at the welded portion during welding also becomes amorphous and transparent after cooling. [0011] The welding method of the present invention uses hot air welding, in which hot air is blown to a welded portion of a resin molded product and a welding rod of the resin of the above-mentioned copolymer to weld the welded portion of the resin molded product. Since the rod is melted and filled into the weld by welding, after cooling,
Joined together. Normally, a weld is provided linearly between two resin molded products to be joined, a welding rod is set up on the weld almost perpendicular to the plate surface, and a pressing force is applied to the weld. Hot air is supplied to the periphery of the part to heat it, and the welding rod is moved along the direction of the welded part while melting. Although the hot air temperature is in the range of 180 to 220 ° C., if the temperature is lower than 180 ° C., the welding rod and the resin molded product of the copolymer resin do not melt to the extent that they can be welded together, so that welding cannot be performed. On the other hand, if the temperature exceeds 220 ° C., it melts too quickly and the above pressing force cannot be applied, so that the welding strength is reduced, the shape and appearance of the welded portion are deteriorated, and the workability is also deteriorated. In the above temperature range, 180 from the viewpoint of welding strength and appearance.
It is preferable to perform welding in the range of -200 ° C. The temperature range of 200 to 220 ° C. is preferable from the viewpoint of workability. The pressing force of the welding rod against the welded portion of the resin molded product is set to 0.7 to 1.0 kgf. The pressing force applies a pressure to the welded portion, and a required welding strength is obtained. If the pressing force is lower than 0.7 kgf, the molten resin between the welding rod and the welded portion of the molded product becomes insufficiently mutually dissolved, bubbles remain and pinholes are generated, and insufficient welding occurs.
When the value exceeds gf, the molten resin protrudes from the welded portion and is not sufficiently filled, and in any case, the welding strength is reduced. Under these conditions, the thickness of the resin molded product is 1.5 m
m or more is possible. As the welding rod, a round rod-shaped single welding rod with a diameter of 2 to 4 mm is appropriate. Shaped triple welding rods are available. As the hot air supply means, a means having a structure in which an electric heater is disposed inside a blower blower driven by a motor and an air outlet is restricted by a nozzle is used. What is necessary is that the required amount of hot air and the above-mentioned temperature range can be controlled from the air supply amount and the electric power supplied to the electric heater. For example, the amount of hot air is about 50 l / min, and the temperature of hot air is adjusted by variably adjusting the voltage or current to the electric heater. An ultraviolet absorber may be added to the resin of the amorphous polyterephthalate copolymer to the resin molded article and the welding rod. As a result, strength deterioration and discoloration due to long-term ultraviolet absorption can be prevented, and weather resistance is assured by both the base material and the weld-weld resin used for a long time outdoors. As the ultraviolet absorber, a benzophenone derivative or a benzotriazole derivative is used.
It is preferable to set it to 5.0% by weight. In the resin molded article, a base material is constituted by the resin of the above-mentioned amorphous polyterephthalate copolymer, and the above-mentioned ultraviolet absorbent is added to one or both surfaces of the base material. Acrylic resins, particularly those formed with a thin resin coating layer of polymethyl methacrylate, can also be used as the material to be welded. In this case, the base resin may not contain an ultraviolet absorber, but the welding rod is formed of the above-mentioned amorphous polyterephthalate copolymer resin containing the above-mentioned ultraviolet absorber. It is possible to impart weather resistance to the welded resin after welding. The combination of the resin molded products to be welded includes welding of resin plates, welding of resin plates to angles, channels, and the like, and can also be used for welding angles, channels, and pipes. Also. There are no restrictions on combinations such as butt welding, lap welding, fillet welding, etc.
Any of vertical, horizontal, and upward is possible. FIG. 1 shows a hot air supply device used in the welding method of the present invention and a mode of welding. This is because the amorphous polyterephthalate copolymer resin plates 1a, 1b
In the example of butt welding, the welded portions 3 are made of resin plates 1a, 1
The edge of b is cut to form a groove. The hot air supply device uses a hot air blower 4 of a gripping operation type, and a rotating blade 45 for blowing air is rotated by a motor (not shown) at the rear of the blower body 40.
The air is heated by energizing the heating wire 44 disposed in the air passage in front of it, the pipe is narrowed by the nozzle 41 in front of the heating wire 44, and hot air of a predetermined temperature is sent out from the outlet 42 at a predetermined flow rate. It has become. The welding rod 2 is pressed against the welding portion 3 while standing vertically, and the hot air outlet 4 of the nozzle portion 41 of the hot air blower 4 is pressed.
2 is blown toward the welding portion 3 and the lower portion of the welding rod 2 to heat both at the same time.
The welding rod 2 is sequentially moved forward along the welded part 3 while adjusting the pressure of the welding rod 2 downward so as to fill and weld the opening of the groove. The molten resin 21 is cooled to become a welding resin 22, and the resin plates 1a and 1b of the base material are firmly joined. The welding resin 22 is left as it is, or the welding resin 2 is placed so that the welded portion is flush with the surfaces of the resin plates 1a and 1b.
Cut or grind and cut off the surface overlay of No. 2. Next, results of a welding test performed by the above-described welding method will be described. The resin plate was made of Eastman Chemical Co., Ltd., having a structure in which a part of the ethylene glycol component of polyethylene terephthalate was replaced with 1,4-cyclohexanedimethanol as an amorphous polyterephthalate copolymer resin, and the product name was “KODAR”. PETG14473 "
A resin plate having a thickness of 3.0 mm (hereinafter simply referred to as PETG) formed by an extrusion method was used. The welding rod is also made of PETG by extrusion and has a diameter of 3.0 m.
m round bar was used. The two resin plates described above were provided with a groove at an angle of 35 ° on both sides, butted against a horizontal plane, and were welded in a downward position by the welding rod. Set the hot air flow of the hot air blower to 5
0 / min, the hot air temperature is 160 to 2
Hot air is blown into four levels in the range of 40 ° C., and at this time, the welding rod is held by hand and the welding rod is pressed with a pressure of 0.7 to
Welding was performed by constantly pressing against a welding rod at 1.0 kgf. The hot air temperature was measured at the hot air outlet 42 of the nozzle section 41 described above. With respect to the welded sample, a tensile test piece including the welded portion was cut out, and the tensile strength of the welded portion was measured to determine the weld strength (according to JIS Z3831). The test results are summarized in Table 1. The welding efficiency in the table represents the ratio of the welding strength to the tensile strength of the base material. [Table 1] As can be seen from the results in Table 1, the hot air temperature 18
At 0 ° C. or lower, the welding rod itself did not melt and welding was impossible. When the temperature exceeds 220 ° C., the welding rod is melted too quickly, a predetermined pressing force by the welding rod cannot be applied, the welding strength is reduced, and the molten resin protrudes more than the welding rod, and the upper surface has irregularities. As a result, the appearance becomes worse, welding cannot be performed at a constant speed, and workability is also reduced. In the temperature range of 180 to 220 ° C., the resin plate and the welding rod are appropriately melted and a pressing force can be applied, so that the resin plate and the welding rod are fused together, and a high welding efficiency of 80% or more is obtained. As a result, the molten resin was in a welded state in which the molten resin slightly protruded from the welding rod, the appearance was good, and the workability was good. In particular, in the range of 180 to 200 ° C., the appearance and workability of the welding resin are good, the welding strength is high, and the welding efficiency is good. On the other hand, when the hot air temperature is increased to 200 to 220 ° C., the welding speed can be increased, so that there is an advantage that the efficiency of the welding operation is improved. According to the method of welding a resin molded article for the amorphous polyterephthalate copolymer of the present invention, hot-air welding is performed at an optimum hot-air temperature between a welding portion and a welding rod. The welding workability is high, the appearance of the welding resin is good, the welding strength is high, and the welding efficiency is also excellent.
【図面の簡単な説明】
【図１】本発明の溶接法に使用する熱風供給装置とその
溶接の態様を示す。
【符号の説明】
１ａ 樹脂板
１ｂ 樹脂板
２ 溶接棒
２１ 溶融樹脂
２２ 溶着樹脂
３ 溶接部
４ 熱風ブロワーBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a hot-air supply device used in a welding method of the present invention and a mode of welding. [Description of Signs] 1a Resin plate 1b Resin plate 2 Welding rod 21 Molten resin 22 Welding resin 3 Weld 4 Hot air blower
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭61−48630（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29C 65/00 - 65/82 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-48630 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B29C 65/00-65/82
Claims (1)
体樹脂の成形品の溶接方法であって、 該共重合体樹脂が、テレフタル酸と共重合成分としての
エチレングリコール及び１，４−シクロヘキサンジメタ
ノールとの共重合体であり、 上記共重合体樹脂の溶接棒を該成形品に対してほぼ垂直
に立てて０．７〜１．０ｋｇｆの押圧力を付加し該成形
品の溶接部と溶接棒とに１８０〜２２０℃の熱風を吹き
付けながら溶接部に沿って移動させて、該樹脂成形品を
溶接し、溶接効率を８０％以上とすることを特徴とする
樹脂成形品の熱風溶接法。(57) [Claim 1] A method for welding a molded article of an amorphous polyterephthalic acid ester copolymer resin, wherein the copolymer resin contains terephthalic acid as a copolymerization component. It is a copolymer of ethylene glycol and 1,4-cyclohexanedimethanol, and a welding rod of the above copolymer resin is set almost perpendicular to the molded product and a pressing force of 0.7 to 1.0 kgf is applied. The resin molded product is welded by moving along the welded portion while blowing hot air of 180 to 220 ° C. onto the welded portion and the welding rod of the molded product, thereby welding the resin molded product, and making the welding efficiency 80% or more. Hot air welding method for plastic molded products.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11119195A JP3388939B2 (en) | 1995-04-11 | 1995-04-11 | Hot air welding of synthetic resin molded products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11119195A JP3388939B2 (en) | 1995-04-11 | 1995-04-11 | Hot air welding of synthetic resin molded products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08281805A JPH08281805A (en) | 1996-10-29 |
| JP3388939B2 true JP3388939B2 (en) | 2003-03-24 |
Family
ID=14554813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11119195A Expired - Fee Related JP3388939B2 (en) | 1995-04-11 | 1995-04-11 | Hot air welding of synthetic resin molded products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3388939B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003181930A (en) * | 2001-12-18 | 2003-07-03 | Suzuka Fuji Xerox Co Ltd | Composite resin molded article and its recycling method |
| CN101664998A (en) * | 2008-09-04 | 2010-03-10 | 延锋彼欧汽车外饰系统有限公司 | Hot air bending rivet welding machine and welding method used in automotive exterior trimming plastic parts |
| JP6455753B2 (en) * | 2014-09-09 | 2019-01-23 | 国立研究開発法人土木研究所 | Drilling device and hole expanding device |
-
1995
- 1995-04-11 JP JP11119195A patent/JP3388939B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08281805A (en) | 1996-10-29 |
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