JPS5787907A - Metal mold for molding synthetic resin - Google Patents

Metal mold for molding synthetic resin

Info

Publication number
JPS5787907A
JPS5787907A JP55164574A JP16457480A JPS5787907A JP S5787907 A JPS5787907 A JP S5787907A JP 55164574 A JP55164574 A JP 55164574A JP 16457480 A JP16457480 A JP 16457480A JP S5787907 A JPS5787907 A JP S5787907A
Authority
JP
Japan
Prior art keywords
mold
surface member
metal mold
metal
ferrite
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
JP55164574A
Other languages
Japanese (ja)
Inventor
Masayuki Tsukahara
Yoshie Kodera
Kazuo Kaneko
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP55164574A priority Critical patent/JPS5787907A/en
Publication of JPS5787907A publication Critical patent/JPS5787907A/en
Pending 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
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/56—Coatings, e.g. enameled or galvanised; Releasing, lubricating or separating agents

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To provide a metal mold without decreasing the production efficiency, by a method wherein inner surface layers of upper and lower molds are made of electromagnetic wave absorbing material, and a metal mold whose temperature decreased once can be heated rapidly. CONSTITUTION:Inner surface layers of an upper mold 8 and a lower mold 10 are constituted by an upper-mold inner surface member 9 and a lower-mold inner surface member 11 of electromagnetic wave absorbing material (ferrite or ferrite rubber containing ferrite). If high-frequency energy is supplied to a heating chamber 6 at heating state, most of the high-frequency energy is used to heat the upper-mold inner surface member 9 and the lower-mold inner surface member 11 with concentration. The upper mold 8 and lower mold 10 are made of metal thereby a metal mold being strong mechanically can be obtained.
JP55164574A 1980-11-25 1980-11-25 Metal mold for molding synthetic resin Pending JPS5787907A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55164574A JPS5787907A (en) 1980-11-25 1980-11-25 Metal mold for molding synthetic resin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55164574A JPS5787907A (en) 1980-11-25 1980-11-25 Metal mold for molding synthetic resin

Publications (1)

Publication Number Publication Date
JPS5787907A true JPS5787907A (en) 1982-06-01

Family

ID=15795749

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55164574A Pending JPS5787907A (en) 1980-11-25 1980-11-25 Metal mold for molding synthetic resin

Country Status (1)

Country Link
JP (1) JPS5787907A (en)

Similar Documents

Publication Publication Date Title
JPS55109639A (en) Method of injection molding
DK279083D0 (en) IMPROVEMENTS IN CONNECTION WITH CONTAINERS
JPS5787907A (en) Metal mold for molding synthetic resin
IN171333B (en)
JPS5330155A (en) Manufacturing method of heat insulating plate
ES2025048A4 (en) LATE FOAM MANUFACTURING PROCEDURE
JPS5614532A (en) Production of friction material
JPS57102327A (en) Heater for barrel of injection molding machine
JPS6434723A (en) Heating and melting method of prepreg
JPS54101873A (en) Manufacture of fiber reinforced plastic
JPS5777551A (en) Vulcanizing of elastomer article
JPS55121044A (en) Transfer molding equipment capable of continuous molding
JPS5584618A (en) Model for mold for microwave hardening
JPS5669149A (en) Manufacturing method of molding material by microwaves irradiation
JPS5784834A (en) Manufacture of ceramics racking material
JPS5748361A (en) Manufacture of flocked rubber product
JPS56118318A (en) Manufacture of resin molded coil
JPS5366031A (en) High frequency heater with infrared radiator
JPS5630825A (en) Preparation of resin sheet having recessed and protruded surface
JPS57176900A (en) Production of diaphragm for speaker
JPS5582630A (en) Molding of thermosetting resin
JPS55109633A (en) Method of foam-shaping
JPS55103919A (en) Production of molded methacrylic resin product having pattern of crape
JPS57129712A (en) Formation of long molding
JPS5959414A (en) Preparation of light controlling body