JPS568221A - Heat extrusion method for formed article - Google Patents

Heat extrusion method for formed article

Info

Publication number
JPS568221A
JPS568221A JP8259679A JP8259679A JPS568221A JP S568221 A JPS568221 A JP S568221A JP 8259679 A JP8259679 A JP 8259679A JP 8259679 A JP8259679 A JP 8259679A JP S568221 A JPS568221 A JP S568221A
Authority
JP
Japan
Prior art keywords
mold
formed article
extrusion method
conduit
rotated
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
JP8259679A
Other languages
Japanese (ja)
Other versions
JPS6261405B2 (en
Inventor
Masao Aihara
Koji Toyoda
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.)
Daido Concrete Kogyo KK
Daido Concrete Co Ltd
Toyoda Kikai Kogyo KK
Original Assignee
Daido Concrete Kogyo KK
Daido Concrete Co Ltd
Toyoda Kikai Kogyo KK
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 Daido Concrete Kogyo KK, Daido Concrete Co Ltd, Toyoda Kikai Kogyo KK filed Critical Daido Concrete Kogyo KK
Priority to JP8259679A priority Critical patent/JPS568221A/en
Publication of JPS568221A publication Critical patent/JPS568221A/en
Publication of JPS6261405B2 publication Critical patent/JPS6261405B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Moulding By Coating Moulds (AREA)
  • Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

PURPOSE: To prevent a formed article from being damaged when the hollow formed article is extruded from a mold by a method wherein the mold is rotated and, being supplied with a heating medium, is heated evenly in the peripheral direction and thus expanded.
CONSTITUTION: A mold 12 is rotated by a driving device 22. After that, a heating medium, such as raw steam, is introduced near to the outer-peripheral surface of the mold 12 through a conduit 38 and applied on to the whole peripheral surface of the mold 12 from many jet orifices provided in the conduit 38. The mold 12 is thus heated evenly in the peripheral direction and the continuous slackening is produced between the mold 12 and a formed article 14, thereby the occurrence of damage on the formed article 14 at extrusion from the mold 12 is prevented.
COPYRIGHT: (C)1981,JPO&Japio
JP8259679A 1979-07-02 1979-07-02 Heat extrusion method for formed article Granted JPS568221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8259679A JPS568221A (en) 1979-07-02 1979-07-02 Heat extrusion method for formed article

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8259679A JPS568221A (en) 1979-07-02 1979-07-02 Heat extrusion method for formed article

Publications (2)

Publication Number Publication Date
JPS568221A true JPS568221A (en) 1981-01-28
JPS6261405B2 JPS6261405B2 (en) 1987-12-21

Family

ID=13778860

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8259679A Granted JPS568221A (en) 1979-07-02 1979-07-02 Heat extrusion method for formed article

Country Status (1)

Country Link
JP (1) JPS568221A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62268797A (en) * 1986-05-16 1987-11-21 Eagle Ind Co Ltd Lubrication system for stern tube device
JPH0286900U (en) * 1988-12-23 1990-07-10

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4952528A (en) * 1972-09-20 1974-05-22
JPS4962528A (en) * 1972-10-19 1974-06-18

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4952528A (en) * 1972-09-20 1974-05-22
JPS4962528A (en) * 1972-10-19 1974-06-18

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62268797A (en) * 1986-05-16 1987-11-21 Eagle Ind Co Ltd Lubrication system for stern tube device
JPH0286900U (en) * 1988-12-23 1990-07-10

Also Published As

Publication number Publication date
JPS6261405B2 (en) 1987-12-21

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