JPH1148333A - Manufacture of spiral synthetic resin tube - Google Patents

Manufacture of spiral synthetic resin tube

Info

Publication number
JPH1148333A
JPH1148333A JP9210914A JP21091497A JPH1148333A JP H1148333 A JPH1148333 A JP H1148333A JP 9210914 A JP9210914 A JP 9210914A JP 21091497 A JP21091497 A JP 21091497A JP H1148333 A JPH1148333 A JP H1148333A
Authority
JP
Japan
Prior art keywords
synthetic resin
resin plate
spiral
shaped
width direction
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
JP9210914A
Other languages
Japanese (ja)
Inventor
Eiichi Sugiura
鋭一 杉浦
Eiji Honda
英治 本多
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP9210914A priority Critical patent/JPH1148333A/en
Publication of JPH1148333A publication Critical patent/JPH1148333A/en
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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B29C53/78—Winding and joining, e.g. winding spirally helically using profiled sheets or strips
    • 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"
    • B29C65/3404—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" characterised by the type of heated elements which remain in the joint
    • B29C65/342—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" characterised by the type of heated elements which remain in the joint comprising at least a single wire, e.g. in the form of a winding
    • 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
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/58—Snap connection
    • 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
    • B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
    • 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
    • B29C66/118—Single monotone curved joints
    • B29C66/1182—Single monotone curved joints the joint being C-shaped
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1222—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a lapped joint-segment
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/122—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section
    • B29C66/1224—Joint cross-sections combining only two joint-segments, i.e. one of the parts to be joined comprising only two joint-segments in the joint cross-section comprising at least a butt joint-segment
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1242—Tongue and groove joints comprising interlocking undercuts
    • B29C66/12421—Teardrop-like, waterdrop-like or mushroom-like interlocking undercuts
    • 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
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
    • B29C66/12441—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue being a single wall
    • 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
    • B29C66/40—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
    • B29C66/4329—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 the joint lines being transversal but non-orthogonal with respect to the axis of said tubular articles, i.e. being oblique
    • 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
    • B29C53/56—Winding and joining, e.g. winding spirally
    • 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"
    • B29C65/3404—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" characterised by the type of heated elements which remain in the joint
    • B29C65/3464—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" characterised by the type of heated elements which remain in the joint characterised by the cross-section of said heated elements which remain in the joint or by the cross-section of their coating, e.g. being triangular
    • 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"
    • B29C65/3472—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" characterised by the composition of the heated elements which remain in the joint
    • B29C65/3476—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" characterised by the composition of the heated elements which remain in the joint being 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
    • B29L2023/005—Hoses, i.e. flexible

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To manufacture a spiral synthetic resin tube having high airtightness, watertightness and strength. SOLUTION: The method for manufacturing a spiral synthetic resin tube having the step of spirally winding a strip-like synthetic resin plate 1 while engaging a columnar protrusion 1A formed at a width direction one end of the resin plate 1 within a tubular recess 1B formed with a slit 1C formed at the width direction other end of the plate 1, comprises the steps of previously embedding en energizing heater 2 at least in one of the one and the other ends of the plate 1, engaging the protrusion 1A within the recess 1B, then energizing the heater 2, and thus melting the engaging end of the plate 1 to be integrated.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】この発明は、スパイラル合成
樹脂管の製造方法、特に、高い気水密性及び強度を有す
るスパイラル合成樹脂管の製造方法に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a spiral synthetic resin tube, and more particularly to a method for manufacturing a spiral synthetic resin tube having high airtightness and strength.

【０００２】[0002]

【従来の技術】従来、軟質塩化ビニール等の合成樹脂か
らなるスパイラル管は、例えば、以下のようにして製造
されていた。2. Description of the Related Art Conventionally, a spiral tube made of a synthetic resin such as soft vinyl chloride has been manufactured, for example, as follows.

【０００３】帯状合成樹脂板の幅方向一端部に凸部を形
成し、帯状合成樹脂板の幅方向他端部に前記凸部が嵌め
込まれる凹部を形成し、このように、両端部に凹凸部が
形成された帯状合成樹脂板の前記凸部を前記凹部に嵌め
込みながら、帯状合成樹脂板をスパイラル状に巻き付け
る。A convex portion is formed at one end in the width direction of the band-shaped synthetic resin plate, and a concave portion is formed at the other end of the band-shaped synthetic resin plate in which the convex portion is fitted. The belt-shaped synthetic resin plate is spirally wound around the convex-shaped portion of the band-shaped synthetic resin plate on which the is formed is fitted into the concave portion.

【０００４】上述したスパイラル合成樹脂管の製造方法
は、旧管内に合成樹脂製の新管を敷設するような場合に
適用されていた。即ち、旧管内に帯状合成樹脂板を順
次、取り込みながら、帯状合成樹脂板をスパイラル状に
巻き付けて、旧管内に合成樹脂製の新管を敷設してい
た。The above-mentioned method of manufacturing a spiral synthetic resin pipe has been applied to a case where a new synthetic resin pipe is laid in an old pipe. That is, the belt-shaped synthetic resin plate is spirally wound while sequentially taking in the band-shaped synthetic resin plate in the old tube, and a new synthetic resin tube is laid in the old tube.

【０００５】[0005]

【発明が解決しようとする課題】しかしながら、上述し
たスパイラル合成樹脂管の製造方法は、次のような問題
を有していた。即ち、帯状合成樹脂板は、単に凹凸嵌合
によって巻き付けられているので、スパイラル合成樹脂
管の気水密性が悪い。従って、このようなスパイラル合
成樹脂管を下水道管あるいは排水管に使用した場合に
は、周囲に汚水が漏れて、環境を汚染する。一方、上水
管に使用した場合には、外部からの浸入水が避けられな
い。しかも、敷設後のスパイラル合成樹脂管に内外圧が
作用した場合には、管の変形により凹凸嵌合が外れる恐
れがある。However, the above-described method for manufacturing a spiral synthetic resin tube has the following problems. That is, since the belt-shaped synthetic resin plate is simply wound by fitting the concave and convex, the air-tightness of the spiral synthetic resin tube is poor. Therefore, when such a spiral synthetic resin pipe is used for a sewer pipe or a drain pipe, sewage leaks to the surroundings and pollutes the environment. On the other hand, when used for water pipes, intrusion of water from the outside is inevitable. In addition, when internal and external pressures act on the spiral synthetic resin pipe after the laying, there is a possibility that the irregular fitting may be released due to deformation of the pipe.

【０００６】従って、この発明の目的は、スパイラル状
に巻き付けられた帯状合成樹脂板の接合端部を一体化す
ることによって、高い気水密性及び強度が得られるスパ
イラル合成樹脂管の製造方法を提供することにある。Accordingly, an object of the present invention is to provide a method of manufacturing a spiral synthetic resin tube which can obtain high airtightness and strength by integrating the joining ends of a spirally wound belt-like synthetic resin plate. Is to do.

【０００７】[0007]

【課題を解決するための手段】請求項１記載の発明は、
帯状合成樹脂板の幅方向一端部に形成された凸部を、前
記合成樹脂板の幅方向他端部に形成された凹部内に嵌め
込みながら、前記合成樹脂板をスパイラル状に巻き付け
ることからなる、スパイラル合成樹脂管の製造方法にお
いて、前記合成樹脂板の前記一端部及び前記他端部のう
ちの少なくとも一方に予め通電発熱体を埋め込み、前記
凸部を前記凹部内に嵌め込んだ後、前記通電発熱体に通
電し、かくして、前記合成樹脂板の嵌合端部を溶融して
一体化することに特徴を有するものである。According to the first aspect of the present invention,
Winding the synthetic resin plate in a spiral shape while fitting a convex portion formed at one end in the width direction of the band-shaped synthetic resin plate into a concave portion formed at the other end in the width direction of the synthetic resin plate. In the method of manufacturing a spiral synthetic resin tube, an energizing heating element is previously embedded in at least one of the one end and the other end of the synthetic resin plate, and after the protrusion is fitted in the recess, the energization is performed. It is characterized in that electricity is supplied to the heating element, and thus the fitting end of the synthetic resin plate is melted and integrated.

【０００８】請求項２記載の発明は、帯状合成樹脂板の
幅方向一端部を、前記合成樹脂板の幅方向他端部上に重
ね合わせながら、前記合成樹脂板をスパイラル状に巻き
付けることからなる、スパイラル合成樹脂管の製造方法
において、前記合成樹脂板の前記一端部及び前記他端部
のうちの少なくとも一方に予め通電発熱体を埋め込み、
前記一端部を前記他端部上に重ね合わせた後、前記通電
発熱体に通電し、かくして、前記合成樹脂板の重合わせ
端部を溶融して一体化することに特徴を有するものであ
る。According to a second aspect of the present invention, the synthetic resin plate is spirally wound while one end in the width direction of the band-shaped synthetic resin plate is overlapped on the other end in the width direction of the synthetic resin plate. In the method of manufacturing a spiral synthetic resin tube, a current-carrying heating element is embedded in at least one of the one end and the other end of the synthetic resin plate in advance.
The present invention is characterized in that after the one end is superimposed on the other end, the energizing heating element is energized, and thus the overlapping end of the synthetic resin plate is melted and integrated.

【０００９】[0009]

【発明の実施の形態】次に、この発明の、スパイラル合
成樹脂管の製造方法の一実施態様を、図面を参照しなが
ら説明する。Next, an embodiment of a method for manufacturing a spiral synthetic resin pipe according to the present invention will be described with reference to the drawings.

【００１０】図１は、この発明の、スパイラル合成樹脂
管の製造方法に使用する帯状合成樹脂板を示す部分斜視
図、図２は、別の帯状合成樹脂板を示す部分斜視図、図
３は、図１及び図２の帯状合成樹脂板によって製造され
たスパイラル合成樹脂管を示す部分斜視図、図４は、更
に別の帯状合成樹脂板を示す部分斜視図、図５は、更に
別の帯状合成樹脂板を示す部分斜視図、図６は、図４及
び図５の帯状合成樹脂板によって製造されたスパイラル
合成樹脂管を示す部分斜視図である。FIG. 1 is a partial perspective view showing a band-shaped synthetic resin plate used in the method for manufacturing a spiral synthetic resin tube of the present invention, FIG. 2 is a partial perspective view showing another band-shaped synthetic resin plate, and FIG. FIG. 4 is a partial perspective view showing a spiral synthetic resin pipe manufactured from the belt-shaped synthetic resin plate of FIGS. 1 and 2, FIG. 4 is a partial perspective view showing another belt-shaped synthetic resin plate, and FIG. FIG. 6 is a partial perspective view showing a spiral synthetic resin tube manufactured by using the belt-shaped synthetic resin plate shown in FIGS. 4 and 5.

【００１１】図１において、１は、軟質塩化ビニール等
の帯状合成樹脂板である。帯状合成樹脂板１の幅方向一
端部には、帯状合成樹脂板１の長手方向亘って円柱状凸
部１Ａが形成され、他端部には、帯状合成樹脂板１の長
手方向亘って管状凹部１Ｂが形成されている。管状凹部
１Ｂには、凸部１Ａが挿入されるスリット１Ｃが形成さ
れている。In FIG. 1, reference numeral 1 denotes a belt-shaped synthetic resin plate such as soft vinyl chloride. At one end in the width direction of the band-shaped synthetic resin plate 1, a columnar convex portion 1A is formed over the longitudinal direction of the band-shaped synthetic resin plate 1, and at the other end, a tubular concave portion is formed over the longitudinal direction of the band-shaped synthetic resin plate 1. 1B is formed. A slit 1C into which the convex portion 1A is inserted is formed in the tubular concave portion 1B.

【００１２】２は、凸部１Ａ内に埋設された通電発熱体
である。通電発熱体２は、ニクロム線又はマイクロメタ
ルファイバーとアラミド繊維からなる通電発熱繊維から
なっている。通電発熱繊維は、優れた柔軟性及び耐久性
を有しているので、断線の恐れがなく、凸部１Ａ内に容
易に埋め込むことができ、しかも、ニクロム線とほぼ同
等の電気発熱特性を有している。通電発熱体２は、管状
凹部１Ｂ内あるいは円柱状凸部１Ａ及び管状凹部１Ｂの
両方に埋設しても良い。以下の帯状合成樹脂板において
同様である。Reference numeral 2 denotes a current-carrying heating element buried in the projection 1A. The electric heating element 2 is made of a Nichrome wire or an electric heating fiber composed of a micro metal fiber and an aramid fiber. The current-carrying fiber has excellent flexibility and durability, so that there is no risk of disconnection, the fiber can be easily embedded in the convex portion 1A, and has the same electric heating characteristics as a nichrome wire. doing. The electric heating element 2 may be embedded in the tubular concave portion 1B or in both the columnar convex portion 1A and the tubular concave portion 1B. The same applies to the following belt-shaped synthetic resin plates.

【００１３】上述した帯状合成樹脂板１によってスパイ
ラル合成樹脂管を製造するには、帯状合成樹脂板１の凸
部１Ａを凹部１Ｂ内に嵌め込みながら、帯状合成樹脂板
１をスパイラル状に巻き付ける。このようにして、帯状
合成樹脂板１をスパイラル状に巻き付けたら、通電発熱
体２に通電して、帯状合成樹脂板１の嵌合端部を溶融し
て一体化する。これによって、嵌合端部が溶融して一体
化されていることから高い気水密性及び高い強度を有す
るスパイラル合成樹脂管が製造される。In order to manufacture a spiral synthetic resin tube from the above-mentioned band-shaped synthetic resin plate 1, the band-shaped synthetic resin plate 1 is spirally wound while the convex portion 1A of the band-shaped synthetic resin plate 1 is fitted into the concave portion 1B. After the band-shaped synthetic resin plate 1 is spirally wound in this way, the energization heating element 2 is energized to melt and integrate the fitting end of the band-shaped synthetic resin plate 1. Thereby, the spiral synthetic resin pipe having high airtightness and high strength is manufactured because the fitting end is melted and integrated.

【００１４】上述したスパイラル合成樹脂管の製造方法
を旧管内に新管を敷設する方法に適用することもでき
る。別の帯状合成樹脂板３としては、図２に示すよう
に、幅方向一端部に半円柱状凸部３Ａが形成され、幅方
向他端部に半円柱状凸部３Ａを受け入れる半円柱状凹部
３Ｂが形成されたものであっても良い。この帯状合成樹
脂板３において、通電発熱体２は、半円柱状凸部３Ａ内
に埋設されている。図３に、図１及び図２の帯状合成樹
脂板１、３によって製造されたスパイラル合成樹脂管を
示す。The method for manufacturing a spiral synthetic resin pipe described above can also be applied to a method for laying a new pipe in an old pipe. As another belt-shaped synthetic resin plate 3, as shown in FIG. 2, a semi-cylindrical convex portion 3A is formed at one end in the width direction, and a semi-cylindrical concave portion that receives the semi-cylindrical convex portion 3A at the other end in the width direction. 3B may be formed. In the band-shaped synthetic resin plate 3, the electric heating element 2 is embedded in the semi-cylindrical convex portion 3A. FIG. 3 shows a spiral synthetic resin tube manufactured by the belt-shaped synthetic resin plates 1 and 3 of FIGS. 1 and 2.

【００１５】更に別の帯状合成樹脂板４としては、図４
に示すように、幅方向一端部に薄肉状凸部４Ａが形成さ
れ、幅方向他端部に薄肉状凸部４Ａを受け入れるスリッ
ト状凹部４Ｂが形成されたものであっても良い。この帯
状合成樹脂板４において、通電発熱体２は、薄肉状凸部
４Ａ内に埋設されている。As another belt-shaped synthetic resin plate 4, FIG.
As shown in FIG. 5, a thin convex portion 4A may be formed at one end in the width direction, and a slit-shaped concave portion 4B for receiving the thin convex portion 4A may be formed at the other end in the width direction. In the strip-shaped synthetic resin plate 4, the energizing heating element 2 is embedded in the thin convex portion 4A.

【００１６】上述した凹凸嵌合構造以外の帯状合成樹脂
板５としては、図５に示すように、幅方向一端部のみが
帯状合成樹脂板１の肉厚分だけＬ字状に折れ曲がってい
るものであっても良い。この帯状合成樹脂板５におい
て、通電発熱体２は、Ｌ字状に折れ曲がった端部５Ａ内
に埋設されている。図６に、図４及び図５の帯状合成樹
脂板４、５によって製造されたスパイラル合成樹脂管を
示す。As shown in FIG. 5, the band-shaped synthetic resin plate 5 other than the above-mentioned uneven fitting structure has only one end in the width direction bent in an L-shape by the thickness of the band-shaped synthetic resin plate 1. It may be. In the belt-shaped synthetic resin plate 5, the energization heating element 2 is embedded in an end portion 5A bent in an L-shape. FIG. 6 shows a spiral synthetic resin tube manufactured by the belt-shaped synthetic resin plates 4 and 5 of FIGS. 4 and 5.

【００１７】帯状合成樹脂板５によってスパイラル合成
樹脂管を製造するには、合成樹脂板５の一端部が帯状合
成樹脂板５の他端部上に重ね合わさるように、合成樹脂
板５をスパイラル状に巻き付け、この後、通電発熱体２
に通電して、合成樹脂板５の重合わせ端部を溶融して一
体化する。In order to manufacture a spiral synthetic resin tube from the belt-shaped synthetic resin plate 5, the synthetic resin plate 5 is spirally wound so that one end of the synthetic resin plate 5 overlaps the other end of the band-shaped synthetic resin plate 5. And then the heating element 2
, And the overlapping end of the synthetic resin plate 5 is melted and integrated.

【００１８】これによって、重ね合わせ端部が溶融して
一体化されていることから高い気水密性及び高い強度を
有するスパイラル合成樹脂管が製造される。As a result, a spiral synthetic resin tube having high airtightness and high strength is manufactured because the overlapping end portions are fused and integrated.

【００１９】[0019]

【発明の効果】以上説明したように、この発明によれ
ば、帯状合成樹脂板の接合端部内に通電発熱体を埋設す
ることによって、帯状合成樹脂板の接合端部が一体化す
るので、高い気水密度及び強度を有するスパイラル合成
樹脂管を製造することができ、旧管更生にも有効に適用
することができるといった有用な効果がもたらされる。As described above, according to the present invention, since the energization heating element is buried in the joining end portion of the band-shaped synthetic resin plate, the joining end portion of the band-shaped synthetic resin plate is integrated, so that the cost is high. Spiral synthetic resin tubes having air-water density and strength can be manufactured, and useful effects such as effective application to old pipe rehabilitation can be obtained.

【図面の簡単な説明】[Brief description of the drawings]

【図１】この発明の、スパイラル合成樹脂管の製造方法
に使用する帯状合成樹脂板を示す部分斜視図である。FIG. 1 is a partial perspective view showing a belt-shaped synthetic resin plate used in a method for manufacturing a spiral synthetic resin tube according to the present invention.

【図２】別の帯状合成樹脂板を示す部分斜視図である。FIG. 2 is a partial perspective view showing another belt-shaped synthetic resin plate.

【図３】図１及び図２の帯状合成樹脂板によって製造さ
れたスパイラル合成樹脂管を示す部分斜視図である。FIG. 3 is a partial perspective view showing a spiral synthetic resin pipe manufactured by using the belt-shaped synthetic resin plates of FIGS. 1 and 2;

【図４】更に別の帯状合成樹脂板を示す部分斜視図であ
る。FIG. 4 is a partial perspective view showing still another belt-shaped synthetic resin plate.

【図５】更に別の帯状合成樹脂板を示す部分斜視図であ
る。FIG. 5 is a partial perspective view showing still another belt-shaped synthetic resin plate.

【図６】図４及び図５の帯状合成樹脂板によって製造さ
れたスパイラル合成樹脂管を示す部分斜視図である。FIG. 6 is a partial perspective view showing a spiral synthetic resin tube manufactured from the belt-shaped synthetic resin plates of FIGS. 4 and 5;

【符号の説明】[Explanation of symbols]

１：合成樹脂板 １Ａ：円柱状凸部 １Ｂ：管状凹部 １Ｃ：スリット ２：通電発熱体 ３：合成樹脂板 ３Ａ：半円柱状凸部 ３Ｂ：半円柱状凹部 ４：合成樹脂板 ４Ａ：薄肉状凸部 ４Ｂ：スリット状凹部 ５：合成樹脂板 ５Ａ：Ｌ字状端部 1: Synthetic resin plate 1A: Cylindrical convex portion 1B: Tubular concave portion 1C: Slit 2: Electric heating element 3: Synthetic resin plate 3A: Semi-cylindrical convex portion 3B: Semi-cylindrical concave portion 4: Synthetic resin plate 4A: Thin-walled Convex part 4B: Slit-shaped concave part 5: Synthetic resin plate 5A: L-shaped end part

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 帯状合成樹脂板の幅方向一端部に形成さ
れた凸部を、前記合成樹脂板の幅方向他端部に形成され
た凹部内に嵌め込みながら、前記合成樹脂板をスパイラ
ル状に巻き付けることからなる、スパイラル合成樹脂管
の製造方法において、 前記合成樹脂板の前記一端部及び前記他端部のうちの少
なくとも一方に予め通電発熱体を埋め込み、前記凸部を
前記凹部内に嵌め込んだ後、前記通電発熱体に通電し、
かくして、前記合成樹脂板の嵌合端部を溶融して一体化
することを特徴とする、スパイラル合成樹脂管の製造方
法。1. A synthetic resin plate having a spiral shape formed by fitting a convex portion formed at one end portion in a width direction of a belt-shaped synthetic resin plate into a concave portion formed at the other end portion in a width direction of the synthetic resin plate. In the method for manufacturing a spiral synthetic resin pipe, which is wound, a heating element is embedded in advance in at least one of the one end and the other end of the synthetic resin plate, and the convex portion is fitted into the concave portion. After that, energize the energized heating element,
Thus, a method for manufacturing a spiral synthetic resin tube, characterized in that the fitting end of the synthetic resin plate is melted and integrated. 【請求項２】 帯状合成樹脂板の幅方向一端部を、前記
合成樹脂板の幅方向他端部上に重ね合わせながら、前記
合成樹脂板をスパイラル状に巻き付けることからなる、
スパイラル合成樹脂管の製造方法において、 前記合成樹脂板の前記一端部及び前記他端部のうちの少
なくとも一方に予め通電発熱体を埋め込み、前記一端部
を前記他端部上に重ね合わせた後、前記通電発熱体に通
電し、かくして、前記合成樹脂板の重合わせ端部を溶融
して一体化することを特徴とする、スパイラル合成樹脂
管の製造方法。2. The method according to claim 1, wherein the synthetic resin plate is spirally wound while one end in the width direction of the belt-shaped synthetic resin plate is overlapped on the other end in the width direction of the synthetic resin plate.
In the method of manufacturing a spiral synthetic resin pipe, an energization heating element is previously embedded in at least one of the one end and the other end of the synthetic resin plate, and the one end is overlaid on the other end, A method for manufacturing a spiral synthetic resin tube, characterized by energizing the energizing heating element and thus melting and integrating the overlapped end portions of the synthetic resin plate.
JP9210914A 1997-08-05 1997-08-05 Manufacture of spiral synthetic resin tube Pending JPH1148333A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9210914A JPH1148333A (en) 1997-08-05 1997-08-05 Manufacture of spiral synthetic resin tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9210914A JPH1148333A (en) 1997-08-05 1997-08-05 Manufacture of spiral synthetic resin tube

Publications (1)

Publication Number Publication Date
JPH1148333A true JPH1148333A (en) 1999-02-23

Family

ID=16597163

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9210914A Pending JPH1148333A (en) 1997-08-05 1997-08-05 Manufacture of spiral synthetic resin tube

Country Status (1)

Country Link
JP (1) JPH1148333A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014179084A1 (en) * 2013-05-01 2014-11-06 Access Business Group International Llc Fluid flow director

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014179084A1 (en) * 2013-05-01 2014-11-06 Access Business Group International Llc Fluid flow director

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