JPS5739932A - Manufacture of pipe - Google Patents

Manufacture of pipe

Info

Publication number
JPS5739932A
JPS5739932A JP11554380A JP11554380A JPS5739932A JP S5739932 A JPS5739932 A JP S5739932A JP 11554380 A JP11554380 A JP 11554380A JP 11554380 A JP11554380 A JP 11554380A JP S5739932 A JPS5739932 A JP S5739932A
Authority
JP
Japan
Prior art keywords
layer
pipe
light
resin sheet
thickness
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
JP11554380A
Other languages
Japanese (ja)
Inventor
Kenzo Nakano
Akio Yabuoka
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.)
Resonac Corp
Original Assignee
Shin Kobe Electric Machinery Co 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 Shin Kobe Electric Machinery Co Ltd filed Critical Shin Kobe Electric Machinery Co Ltd
Priority to JP11554380A priority Critical patent/JPS5739932A/en
Publication of JPS5739932A publication Critical patent/JPS5739932A/en
Pending legal-status Critical Current

Links

Landscapes

  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

PURPOSE: To obtain the pipe, which foams, is light and is excellent in heat insulating property, by lap-winding extruded beltlike bodies in the same resin and the same thickness as the first and second layers.
CONSTITUTION: A polypropylene resin sheet 2 with 10mm thickness and 150mm width, which is under a melted condition, is spirally wound on a mandrel 3, surface temperature thereof is heated at 80W120°C, from an extruding machine 1, adjacent side sections are mutually melted and attached, and the first layer 4 is formed. The second layer 5 is shaped by spirally winding the same resin sheet on the layer 4 similarly until the first layer cools. The pipe molded is the light one, the inside thereof has a foaming layer 6, even when a foaming agent is not used particularly.
COPYRIGHT: (C)1982,JPO&Japio
JP11554380A 1980-08-22 1980-08-22 Manufacture of pipe Pending JPS5739932A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11554380A JPS5739932A (en) 1980-08-22 1980-08-22 Manufacture of pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11554380A JPS5739932A (en) 1980-08-22 1980-08-22 Manufacture of pipe

Publications (1)

Publication Number Publication Date
JPS5739932A true JPS5739932A (en) 1982-03-05

Family

ID=14665130

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11554380A Pending JPS5739932A (en) 1980-08-22 1980-08-22 Manufacture of pipe

Country Status (1)

Country Link
JP (1) JPS5739932A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007107140A (en) * 2005-10-14 2007-04-26 Koken Ltd Disposable hood for asbestos work

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007107140A (en) * 2005-10-14 2007-04-26 Koken Ltd Disposable hood for asbestos work

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