JPS5445375A - Mold for resin foam molding - Google Patents
Mold for resin foam moldingInfo
- 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
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
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) |
-
1978
- 1978-08-25 JP JP10412678A patent/JPS5445375A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5645772B2 (en) | 1981-10-28 |
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