JPS56121744A - Steam-saving method for foamed-resin molding machine - Google Patents

Steam-saving method for foamed-resin molding machine

Info

Publication number
JPS56121744A
JPS56121744A JP2552680A JP2552680A JPS56121744A JP S56121744 A JPS56121744 A JP S56121744A JP 2552680 A JP2552680 A JP 2552680A JP 2552680 A JP2552680 A JP 2552680A JP S56121744 A JPS56121744 A JP S56121744A
Authority
JP
Japan
Prior art keywords
steam
drain valve
opened
core
cavity
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
JP2552680A
Other languages
Japanese (ja)
Other versions
JPS61180B2 (en
Inventor
Akio Takahashi
Hisatoshi Fukui
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.)
Kanegafuchi Chemical Industry Co Ltd
Original Assignee
Kanegafuchi Chemical Industry 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 Kanegafuchi Chemical Industry Co Ltd filed Critical Kanegafuchi Chemical Industry Co Ltd
Priority to JP2552680A priority Critical patent/JPS56121744A/en
Publication of JPS56121744A publication Critical patent/JPS56121744A/en
Publication of JPS61180B2 publication Critical patent/JPS61180B2/ja
Granted 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/44—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form
    • B29C44/445—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form in the form of expandable granules, particles or beads
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/3415—Heating or cooling
    • B29C44/3426—Heating by introducing steam in the mould

Landscapes

  • Molding Of Porous Articles (AREA)

Abstract

PURPOSE:To save the quantity of steam used for heating by reducing exhaust steam by adjustment of the discharge area of a drain valve at the stage of one-side heating operation of a foamed thermoplastic resin molding machine and thereby restricting the discharge quantity of the exhaust steam. CONSTITUTION:The one-side heating operation is started under the condition that a cavity-side steam valve 10 is opened and a core-side steam valve is closed on the side of steam supply and that a cavity-side drain valve 12 is closed, a core-side drain valve 13 is opened and a small drain valve 19 is opened on the side of the drain valves. After air inside a cavity-side steam chamber, foamed polystyrene 5 and a core-side steam chamber is replaced by steam and initial drain discharge is ended, the core-side drain valve 13 is closed and one-side heating operation is conducted under the condition that the small drain valve 19 is opened, and the one-side heating operation is completed at the point of time when a set value of a cavity- side pressure switch is reached. In the above operation, the duration of time when the core-side drain valve is opened is preferably 2-5sec, and then, after the drain valve is closed, one-side heating is conducted with the small drain valve being employed as it is opened.
JP2552680A 1980-02-29 1980-02-29 Steam-saving method for foamed-resin molding machine Granted JPS56121744A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2552680A JPS56121744A (en) 1980-02-29 1980-02-29 Steam-saving method for foamed-resin molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2552680A JPS56121744A (en) 1980-02-29 1980-02-29 Steam-saving method for foamed-resin molding machine

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP58248188A Division JPS59182719A (en) 1983-12-28 1983-12-28 Saving method of steam in expansion molding machine

Publications (2)

Publication Number Publication Date
JPS56121744A true JPS56121744A (en) 1981-09-24
JPS61180B2 JPS61180B2 (en) 1986-01-07

Family

ID=12168482

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2552680A Granted JPS56121744A (en) 1980-02-29 1980-02-29 Steam-saving method for foamed-resin molding machine

Country Status (1)

Country Link
JP (1) JPS56121744A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56123835A (en) * 1980-03-04 1981-09-29 Sekisui Plastics Co Ltd Foam-molding apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51106176A (en) * 1975-03-17 1976-09-20 Sekisui Plastics

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51106176A (en) * 1975-03-17 1976-09-20 Sekisui Plastics

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56123835A (en) * 1980-03-04 1981-09-29 Sekisui Plastics Co Ltd Foam-molding apparatus
JPS6123099B2 (en) * 1980-03-04 1986-06-04 Sekisui Kaseihin Kogyo Kk

Also Published As

Publication number Publication date
JPS61180B2 (en) 1986-01-07

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