JPS56150520A - Abnormality detecting method for foam molding process - Google Patents

Abnormality detecting method for foam molding process

Info

Publication number
JPS56150520A
JPS56150520A JP5460080A JP5460080A JPS56150520A JP S56150520 A JPS56150520 A JP S56150520A JP 5460080 A JP5460080 A JP 5460080A JP 5460080 A JP5460080 A JP 5460080A JP S56150520 A JPS56150520 A JP S56150520A
Authority
JP
Japan
Prior art keywords
pressure
mold
chamber
steam
chambers
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
JP5460080A
Other languages
Japanese (ja)
Other versions
JPS613258B2 (en
Inventor
Toru Sekiguchi
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.)
Sekisui Kasei Co Ltd
Original Assignee
Sekisui Plastics 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 Sekisui Plastics Co Ltd filed Critical Sekisui Plastics Co Ltd
Priority to JP5460080A priority Critical patent/JPS56150520A/en
Publication of JPS56150520A publication Critical patent/JPS56150520A/en
Publication of JPS613258B2 publication Critical patent/JPS613258B2/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
    • 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
    • B29C44/60—Measuring, controlling or regulating

Landscapes

  • Molding Of Porous Articles (AREA)

Abstract

PURPOSE:To detect molding abnormality in the foam molding process by applying fixed air pressure and a fixed steam pressure to the chamber of a mold in addition to the air and steam for molding and by detecting the change of pressure difference in the chamber by means of a differential pressure gauge. CONSTITUTION:A mold cavity 30 is formed between a core mold 10 and a cavity mold 20. A fixed air pressure and a fixed steam pressure are applied to the chamber 11 of the core mold 10 and the chamber 21 of the cavity mold 20 through a pressure passage 50 provided in addition to the supply passage for molding air and steam. Pressure sensors 12 and 22 are disposed at the respective predetermined positions on the chambers 11 and 21 respectively. The pressure sensors 12 and 22 are connected to a differential pressure gauge 40 to continuously detect the pressure difference between the chambers 11 and 21. Abnormal pressure difference between the chambers 11 and 21 can be detected immediately.
JP5460080A 1980-04-23 1980-04-23 Abnormality detecting method for foam molding process Granted JPS56150520A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5460080A JPS56150520A (en) 1980-04-23 1980-04-23 Abnormality detecting method for foam molding process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5460080A JPS56150520A (en) 1980-04-23 1980-04-23 Abnormality detecting method for foam molding process

Publications (2)

Publication Number Publication Date
JPS56150520A true JPS56150520A (en) 1981-11-21
JPS613258B2 JPS613258B2 (en) 1986-01-31

Family

ID=12975215

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5460080A Granted JPS56150520A (en) 1980-04-23 1980-04-23 Abnormality detecting method for foam molding process

Country Status (1)

Country Link
JP (1) JPS56150520A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6268730A (en) * 1985-09-20 1987-03-28 Toyo Kikai Kinzoku Kk Pressure controlling of molding machine for foamed styrol

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6268730A (en) * 1985-09-20 1987-03-28 Toyo Kikai Kinzoku Kk Pressure controlling of molding machine for foamed styrol
JPH0528173B2 (en) * 1985-09-20 1993-04-23 Toyo Machinery & Metal

Also Published As

Publication number Publication date
JPS613258B2 (en) 1986-01-31

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