JPS56115212A - Device for coating plastic on steel pipe - Google Patents

Device for coating plastic on steel pipe

Info

Publication number
JPS56115212A
JPS56115212A JP1890080A JP1890080A JPS56115212A JP S56115212 A JPS56115212 A JP S56115212A JP 1890080 A JP1890080 A JP 1890080A JP 1890080 A JP1890080 A JP 1890080A JP S56115212 A JPS56115212 A JP S56115212A
Authority
JP
Japan
Prior art keywords
steel pipe
recessed
protruded
spiral
film
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.)
Granted
Application number
JP1890080A
Other languages
Japanese (ja)
Other versions
JPS601177B2 (en
Inventor
Kiyoshige Yoshida
Hisanao Nakahara
Tsuneo Nagamine
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 Steel Corp
Original Assignee
Kawasaki Steel 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP1890080A priority Critical patent/JPS601177B2/en
Publication of JPS56115212A publication Critical patent/JPS56115212A/en
Publication of JPS601177B2 publication Critical patent/JPS601177B2/en
Expired 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
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/02—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material
    • B29C63/04—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material by folding, winding, bending or the like
    • B29C63/08—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material by folding, winding, bending or the like by winding helically
    • B29C63/10—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material by folding, winding, bending or the like by winding helically around tubular articles
    • B29C63/105—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material by folding, winding, bending or the like by winding helically around tubular articles continuously

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To form regular and uniform recessed and protruded steps on the surface of the plastic by a method wherein two sets and more of specified pressing rolls are pressed to a plastic film being wound around the steel pipe effecting a spiral rotation. CONSTITUTION:The plastic film 14 is wound in spiral around the steel pipe 11 being preheated during being transferred into the axial direction thereof under the condition of spiral rotation. The pressing rolls 29A, 29B, 29C being supported by moving frames 24 respectively are arranged mutually so as to be coincided with the spiral of the film 14 and are pressed against the surface of the film 14 by operating a cylinder 32. The central part of a section to be a protruded part is recessed into a V-shaped groove by the central protuberance 40 of the pressing roll 29A, subsequently, the central part of the section to be a protruded part is flattened by the pressing roll 29B and further the formed recessed section of the pressing roll 29C is pressed thereagainst, thereby forming the regular and uniform recessed and protruded parts.
JP1890080A 1980-02-18 1980-02-18 Plastic coating equipment for steel pipes Expired JPS601177B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1890080A JPS601177B2 (en) 1980-02-18 1980-02-18 Plastic coating equipment for steel pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1890080A JPS601177B2 (en) 1980-02-18 1980-02-18 Plastic coating equipment for steel pipes

Publications (2)

Publication Number Publication Date
JPS56115212A true JPS56115212A (en) 1981-09-10
JPS601177B2 JPS601177B2 (en) 1985-01-12

Family

ID=11984455

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1890080A Expired JPS601177B2 (en) 1980-02-18 1980-02-18 Plastic coating equipment for steel pipes

Country Status (1)

Country Link
JP (1) JPS601177B2 (en)

Also Published As

Publication number Publication date
JPS601177B2 (en) 1985-01-12

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