JPS60190329A - 施工現場における管の製造方法 - Google Patents

施工現場における管の製造方法

Info

Publication number
JPS60190329A
JPS60190329A JP59046293A JP4629384A JPS60190329A JP S60190329 A JPS60190329 A JP S60190329A JP 59046293 A JP59046293 A JP 59046293A JP 4629384 A JP4629384 A JP 4629384A JP S60190329 A JPS60190329 A JP S60190329A
Authority
JP
Japan
Prior art keywords
pipe
banded
strip
tube
glass transition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP59046293A
Other languages
English (en)
Inventor
Takehiro Ito
伊藤　武廣
Kazuaki Sanjo
山條　和明
Mikio Morimoto
森本　幹男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kubota Corp
Original Assignee
Kubota Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kubota Corp filed Critical Kubota Corp
Priority to JP59046293A priority Critical patent/JPS60190329A/ja
Publication of JPS60190329A publication Critical patent/JPS60190329A/ja
Pending legal-status Critical Current

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
    • B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
    • B29C69/02—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore of moulding techniques only
    • B29C69/025—Deforming articles in a simpler intermediate shape without internal stresses for packaging transporting or storage and reshaping and fixing the original configuration on the place of use
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/16—Straightening or flattening
    • B29C53/20—Straightening or flattening of tubes
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/36—Bending and joining, e.g. for making hollow articles
    • B29C53/38—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges
    • B29C53/48—Bending and joining, e.g. for making hollow articles by bending sheets or strips at right angles to the longitudinal axis of the article being formed and joining the edges for articles of indefinite length, i.e. bending a strip progressively
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B29C65/3608—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements
    • B29C65/3616—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint comprising single particles, e.g. fillers or discontinuous fibre-reinforcements comprising discontinuous fibre-reinforcements
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3676—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic
    • 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
    • B29C66/40—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
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • 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
    • B29C66/914—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
    • B29C66/914—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
    • B29C66/91431—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 the temperature being kept constant over time
    • 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
    • B29C66/9192—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 in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91921—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 in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • B29C66/91931—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 in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined
    • B29C66/91935—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 in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to the fusion temperature or melting point of the material of one of the parts to be joined lower than said fusion 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
    • B29C66/9192—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 in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91921—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 in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature
    • B29C66/91941—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 in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to Tg, i.e. the glass transition temperature, of the material of one of the parts to be joined
    • B29C66/91943—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 in explicit relation to another variable, e.g. temperature diagrams in explicit relation to another temperature, e.g. to the softening temperature or softening point, to the thermal degradation temperature or to the ambient temperature in explicit relation to Tg, i.e. the glass transition temperature, of the material of one of the parts to be joined higher than said glass transition 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
    • 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
    • B29C65/04—Dielectric heating, e.g. high-frequency welding, i.e. radio frequency welding of plastic materials having dielectric properties, e.g. PVC
    • 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
    • B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
    • 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
    • B29C65/103—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 direct heating both 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
    • 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
    • B29C65/1403—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 type of electromagnetic or particle radiation
    • B29C65/1425—Microwave radiation
    • 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
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3684—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being non-metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B29L2023/22—Tubes or pipes, i.e. rigid

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Plasma & Fusion (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 本発明は施工現場におけるプラスチック管の製造方法に
関し、詳細には運搬あるいは保管に便利な様にコンパク
トな形状にされた材料を使用し、施工現場において容易
に管体として造シあげる仁とのできる方法に関するもの
である。
種々の配管工事に使用されるプラスチック管（以下管と
いう）は工場において定尺物として製造される。一方施
工現場においては管継手等を介して上記定尺管を接続し
、用途に応じた長さの配管を形成している。
ところで管は流体通過部分を空洞部として形成するもの
であるから元々嵩高いものであシ殊に大径管になる程嵩
高さは増大する。その為トラック等の搬送手段に載せて
運搬する場合にも１回当たシの搬送量の増大は望めず効
率的な搬送ができないと共に、保管する場合にも広大な
敷地あるいは空間を必要とする。又施工現場においては
定尺管を必要に応じて接続するので接続作業に多大な労
力を必要とし、勿論管継手の準備も必要になってくる。
本発明者等は上記事情をかねてより憂慮し色々と研究を
進めていたととる搬送及び保管時には嵩を小さくするこ
とのできる帯状物とし、施工時に該帯状物を幅方向に湾
曲させ且つ突き合わせ部を密着させて管を形成すること
ができれば問題点を一挙に解消し得るのではないかとの
期待を抱くに至った。しかるに帯状物を管状に湾曲する
ことができる為にはまず材料面で制約があると共に実際
問題として管状に湾曲させる操作は必ずしも容易でない
ばかシか、例えば帯状物を単に加熱し湾曲させて得た管
状物においては内部応力が残留して強度が低下するとい
う欠点があることを知った。
又湾曲させた帯状物の突き合わせ部を密着させるに当た
っても相当の工夫を要することが分かった。
本発明はこうした事情に着目してなされたものであって
、施工時までは帯状で保存されている材料を、施工現場
において容易に且つ残留応力が発生しない様に湾曲させ
ると共に湾曲させた帯状物の突き合わせ部を確実に密着
させる方法を提供することによシ運搬及び保管の効率化
をはかり、且つ管の施工操作自体を簡便にしようとする
ものである。
しかして上記目的を達成した本発明方法は、熱可塑性プ
ラスチック管をガラス転移点と融点の間の温度で切シ開
いて帯状とした後常温まで冷却して得た帯状物を、施工
時にガラス転移点以上に加熱して管状に戻し、突き合わ
せ部を融着する点に要旨を有するものである。
熱可塑性プラスチックの溶融状態における分子配列は異
方性に富んでおり、冷却されるにつれて自由度を失って
分子配列が定まってくる。殊にいったんガラス転移点以
上の温度まで加熱された後で冷却したものでは分子配列
は固定され易く変形が極めて困難になシ、例えば平板状
に押出成形したプラスチック板をいったん冷却した後こ
れを加熱軟化して管状に湾曲させようとしても多大な強
制力を必要とすると共に、この強制力をとシさると元の
平板に戻ってしまい、又無理に変形させると破断する。
一方該平板状プラスチックをガラス転移点以上に加熱し
て湾曲させた場合には変形作業自体は容易であり、湾曲
させた状態でこれを冷却すると一応体裁の整った管を得
ることはできるが、この様な帯状物の内部には応力が残
留しており、管に再び熱が加わるとすぐに元の平板状に
戻ろうとするので適用範囲は極めて限られたものとなる
。そこで本発明者等は鋭意検討を加えた結果、前記構成
を採用することによって所期の目的を達成するに至った
。
即ち本発明は熱可塑性プラスチック製品の分子配列が押
出成形時にはほぼ決定されると共に該プラスチック製品
を変形させた後加熱昇温させると押出成形時の形状に戻
るという性質を利用したものであって、その実施に当た
ってはまず常法に従い熱可塑性管の押出成形を行なう。
次いで該押出成形管をガラス転移点以上であって融点以
下の温度に保持しながら長手方向に直線状に（あるいは
らせん状に）切シ開いて帯状物とした後これを例えばコ
イル状に巻取って冷却し、現場施工用の管形成材料とす
る。次いで現場施工に当たっては例えば第４図に示す様
な装置を用いて管の製造を行なう。尚図中の１はコイル
状帯状物、２は熱風ボックス、３は外径ガイド、４は融
着機、５は内径ガイド、Ｐは製造された管を夫々示す。
即ちコイル状帯状物１を熱風ボックス２に収納し加熱し
て軟化させると共に矢印Ａ方向に引き出すと帯状物１ａ
の両端は前記押出成形時の管形状に戻ろうとして自然と
内側へ湾曲する。次いで図示しない挟圧ローラ等を用い
てこれに若干の強制力を加え更に湾に設けた外径ガイド
３に導入ｊ　ｈ、ｊｊ　７２ＷＦｘ移点以上まで昇温さ
せ、その結果はぼ元の管形状に戻った帯状物１ａの端部
同士を突き合わせ、更にとの管状帯状物１ｂを融着機４
に導入して突き合わせ部を融着する。こうして得られた
管Ｐを冷却し、必要があれば所望長さに切断して施工用
管を得る。
本発明方法の基本構成は上記の通シであるが、帯状物１
が、第２図に示す様に押出成形管Ｐ′を回転させながら
矢印Ｂ部分でらせん状に切シ開いてコイル状に巻き取シ
冷却したものである場合には、施工に際して切り開き時
とは反対方向に巻き戻す様に帯状物を突き合わせ、該突
き合わせ部を融着して管を形成すればよい。尚押出成形
管Ｐ′の切シ開きを容易にする為には押出成形に当たっ
て第３図に示す様なスリット６を管Ｐに形成することが
望まれる。
一方施工時に使用される帯状物１の加熱手段については
特に制限は々く、電熱ヒータ等の汎用手段を適用すれば
よい。
次に帯状物１を昇温し湾曲させて得た管状帯状物１ｂの
突き合わせ部を融着する手段としては、例えば第４図に
示す様に突き合わされる直前の帯状物端部同士の隙間に
断面形状が三角形のヒータ４ａが挿入される様に配置し
端部を加熱昇温させた後管状帯状物１ｂを矢印Ｃ方向に
挟圧して突き合わせ部を密着させる手段が例示される。
又上記ヒータ４ａに代えて突き合わされる前の帯状物端
部同士の隙間にホットジェットヒータを指向させて加熱
昇温を行なってもよい。その他、融着手段としては誘導
加熱、誘電加熱、マイクロ波加熱、超音波加熱等を利用
することもできる。誘導加熱を利用する場合には第５図
に示す様に管Ｐ′を押出成形する際に切シ開き部に相当
する部分７の近傍を導電性プラスチックで形成しておき
、矢印り部分から切り開いて一点鎖線で示す様な平板状
とし、これを紙面貫通方向に巻取って冷却し管形成用帯
状物とする。そして施工時に該管形成用帯状物を前記と
同様に第１図に示される様な管製造装置で湾曲させ更に
誘導加熱式融着機−に通すと突き合わせ部分が簡単に融
着される。尚上記導電性プラスチックとしては熱可塑性
プラスチックにしんちゆう、鉄、アルミニウム、銅等の
金属ファイバーを混合したものが例示される。又本発明
に係る熱可塑性プラスチックとしては例えばＰｖＣｌＰ
Ｅ、ＰＰ、ＰＢ等のプラスチック材料が例示され、各材
料を用いて形成した管形成用帯状物を加熱して管状に戻
すに当たっては各材料のガラス転移点以上であって且つ
各材料の融点以下の温度に加熱・昇温させればよい。
本発明は以上の様に構成されておシ、現場施工を行なう
までは管形成材料が帯状で運搬・保管できるので単位重
量当たシの嵩さが小さく、運搬並びに保管を効率良く行
なうことができる。又常法に従い押出成形した管を切シ
開いて得た帯状物を用いて管の製造を行なうので、帯状
物をガラス転移点以上に加熱するだけでよく突き合わせ
部を融着して得た管には内部応力が残留することもない
。
次に本発明の実施例について説明する。
実施例 下記組成の導電性プラスチック及びポリプロピレンを使
用し、下記押出条件下に第５図に示す形状の管（直径２
０ｍｍφ×肉厚４ｍｍ）を製造した。
導電性プラスチック（東洋インキ株式会社製）ポリプロ
ピレン　６０重量部 しんちゅうファイバー　１００１ その他　３０　１ 押出条件 押出機　ＨＡ　Ａ　Ｋ　Ｅ社製 押出温度及び押出トルク シリンダ　１８０℃、　２１５０ｋｇｆ　−ｃｍ金型　
２００℃、１６５０１ 得られた管を矢印り部分において長手方向（紙面貫通方
向）に切シ開くと共に同方向に巻き取シ冷却してコイル
状帯状物を得た。これを第１図に示す管製造装置に導入
して加熱し湾曲させ、且つ突き合わせ部を融着して管Ｐ
を製造した。尚融着に幽たっては誘導加熱方式を利用し
た。得られた管は強度的にも優れた管であった。
【図面の簡単な説明】
第１図は本発明方法の一例を示す為の説明図、第２図は
他の実施例に係るコイル状帯状物の製作説明図、第３〜
５図は本発明の実施例を示す説明図である。 １・・・コイル状帯状物　２・・・熱風ボックス３・・
・外径ガイド　４・・・融着機 ５・・・内径ガイド　Ｐ・・・管 用願人　久保田鉄工株式会社

Claims (1)

    【特許請求の範囲】
  1. 熱可塑性プラスチック管をガラス転移点と融点の間の温
    度で切シ開いて帯状とした後常温まで冷却して得た帯状
    物を、施工時にガラス転移点以上に加熱して管状に戻し
    、突き合わせ部を融着することを特徴とする施工現場に
    おける管の製造方法。
JP59046293A 1984-03-10 1984-03-10 施工現場における管の製造方法 Pending JPS60190329A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59046293A JPS60190329A (ja) 1984-03-10 1984-03-10 施工現場における管の製造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59046293A JPS60190329A (ja) 1984-03-10 1984-03-10 施工現場における管の製造方法

Publications (1)

Publication Number Publication Date
JPS60190329A true JPS60190329A (ja) 1985-09-27

Family

ID=12743162

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59046293A Pending JPS60190329A (ja) 1984-03-10 1984-03-10 施工現場における管の製造方法

Country Status (1)

Country Link
JP (1) JPS60190329A (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252040A2 (en) * 1986-06-02 1988-01-07 AB AKERLUND & RAUSING Method for the scrap-free manufacture of coated profiles and thermally shaped containers
EP3063072A4 (en) * 2013-10-31 2017-08-02 Tipper Tie, Inc. Systems with pre-heaters for producing seamed encased products and related devices, methods and computer program products
US10316469B2 (en) 2014-12-16 2019-06-11 Ecolab Usa Inc. On-line control and reaction process for pH adjustment
US11110666B2 (en) 2018-02-12 2021-09-07 Tipper Tie, Inc. Systems with external heat-seal assembly height adjustment control and related seal assemblies
US11951888B2 (en) 2012-03-15 2024-04-09 Ts Tech Co., Ltd. Vehicle seat

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252040A2 (en) * 1986-06-02 1988-01-07 AB AKERLUND & RAUSING Method for the scrap-free manufacture of coated profiles and thermally shaped containers
US11951888B2 (en) 2012-03-15 2024-04-09 Ts Tech Co., Ltd. Vehicle seat
EP3063072A4 (en) * 2013-10-31 2017-08-02 Tipper Tie, Inc. Systems with pre-heaters for producing seamed encased products and related devices, methods and computer program products
US10316469B2 (en) 2014-12-16 2019-06-11 Ecolab Usa Inc. On-line control and reaction process for pH adjustment
US11110666B2 (en) 2018-02-12 2021-09-07 Tipper Tie, Inc. Systems with external heat-seal assembly height adjustment control and related seal assemblies

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