JPS6490731A - Foam molding method for thermoplastic resin - Google Patents

Foam molding method for thermoplastic resin

Info

Publication number
JPS6490731A
JPS6490731A JP62248119A JP24811987A JPS6490731A JP S6490731 A JPS6490731 A JP S6490731A JP 62248119 A JP62248119 A JP 62248119A JP 24811987 A JP24811987 A JP 24811987A JP S6490731 A JPS6490731 A JP S6490731A
Authority
JP
Japan
Prior art keywords
steam
valve
pressure
mold
air
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
JP62248119A
Other languages
Japanese (ja)
Other versions
JP2519478B2 (en
Inventor
Yoshihiko Seki
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP62248119A priority Critical patent/JP2519478B2/en
Publication of JPS6490731A publication Critical patent/JPS6490731A/en
Application granted granted Critical
Publication of JP2519478B2 publication Critical patent/JP2519478B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

PURPOSE:To enable the title method to perform safe and stable foam molding operation by shortening a steam feed period of time, by a method wherein heating steam is fed by giving a pulsation to the feed steam by a regulator while pressure control of a male and female molds are being performed separately. CONSTITUTION:A molding mold is constituted of a male and female molds 1, 2 possessing inner plate with a vent hole and chambers 11, 21 as a pair. Steam feed pipes 3 feeding heating steam through a heating steam source S to the chamber parts 11, 21 are provided and valves 5 having pressure control parts 4 connecting with an air source P are provided into the steam feed pipes 3 as interposition. The operation of the valve 5 is performed at a pressure control part 4 of a diaphragm 13 through a variation of balance among air pressure of regulated air for opening and closing of the valve from a pressure reducing valve 10 and solenoid valve 9 for the opening and closing, secondary side steam connected with the mold and pressure control air. Regulators 24 are arranged to each piping 7 so that steam pressure of the male mold 1 and female mold 2 can be controlled separately and pulsation is given to steam feed through control of the opening and closing by the valve 5 through control of the regulator 24 by the command of a computer 25.
JP62248119A 1987-10-02 1987-10-02 Foam molding method for thermoplastic resin Expired - Lifetime JP2519478B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62248119A JP2519478B2 (en) 1987-10-02 1987-10-02 Foam molding method for thermoplastic resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62248119A JP2519478B2 (en) 1987-10-02 1987-10-02 Foam molding method for thermoplastic resin

Publications (2)

Publication Number Publication Date
JPS6490731A true JPS6490731A (en) 1989-04-07
JP2519478B2 JP2519478B2 (en) 1996-07-31

Family

ID=17173512

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62248119A Expired - Lifetime JP2519478B2 (en) 1987-10-02 1987-10-02 Foam molding method for thermoplastic resin

Country Status (1)

Country Link
JP (1) JP2519478B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62216734A (en) * 1986-03-19 1987-09-24 Yoshihiko Seki Process for foam molding of thermoplastic resin

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62216734A (en) * 1986-03-19 1987-09-24 Yoshihiko Seki Process for foam molding of thermoplastic resin

Also Published As

Publication number Publication date
JP2519478B2 (en) 1996-07-31

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