JPS5445375A - Mold for resin foam molding - Google Patents

Mold for resin foam molding

Info

Publication number
JPS5445375A
JPS5445375A JP10412678A JP10412678A JPS5445375A JP S5445375 A JPS5445375 A JP S5445375A JP 10412678 A JP10412678 A JP 10412678A JP 10412678 A JP10412678 A JP 10412678A JP S5445375 A JPS5445375 A JP S5445375A
Authority
JP
Japan
Prior art keywords
mold
piece
movable
foam
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
JP10412678A
Other languages
Japanese (ja)
Other versions
JPS5645772B2 (en
Inventor
Motomu Wada
Shinichi Inoue
Kazunori Furukawa
Shigeyoshi Matsubara
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.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical 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 Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP10412678A priority Critical patent/JPS5445375A/en
Publication of JPS5445375A publication Critical patent/JPS5445375A/en
Publication of JPS5645772B2 publication Critical patent/JPS5645772B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Moulds For Moulding Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE: A mold for resin foam molding capable of giving a crosslinked polyolefin foam having improved appearance and dimensional accuracy, wherein a movab piece to form a mold wall in contact with the mold cavity shidakly is provided in the front of the movable mold.
CONSTITUTION: A polyolefin resin containing a crosslinking and a blowing agents is fed to the mold cavity 5 surrounded by the hot movable mold 1 capable of increasing the mold volume, the movable piece 3 slidable to the movable mold 2, and the outer frame 4 so that the crosslinking and the blowing agents are decomposed. The mold 2 is then retreated by a given distance determined according to a given expansion ratio at a normal speed. The piece 3 is retreated with a mold volume increasing speed equal to the volume expansion of the foamable resin in the cavity 5. The mold is then cooled to cool the crosslinked foam.
EFFECT: Excellent crosslinked foam free from wrinkle on the surface can be obtained.
COPYRIGHT: (C)1979,JPO&Japio
JP10412678A 1978-08-25 1978-08-25 Mold for resin foam molding Granted JPS5445375A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10412678A JPS5445375A (en) 1978-08-25 1978-08-25 Mold for resin foam molding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10412678A JPS5445375A (en) 1978-08-25 1978-08-25 Mold for resin foam molding

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP50046246A Division JPS51121077A (en) 1975-03-22 1975-04-15 Method and mold for producing polyolefin crosslinking foam

Publications (2)

Publication Number Publication Date
JPS5445375A true JPS5445375A (en) 1979-04-10
JPS5645772B2 JPS5645772B2 (en) 1981-10-28

Family

ID=14372418

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10412678A Granted JPS5445375A (en) 1978-08-25 1978-08-25 Mold for resin foam molding

Country Status (1)

Country Link
JP (1) JPS5445375A (en)

Also Published As

Publication number Publication date
JPS5645772B2 (en) 1981-10-28

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