JPS56133129A - Molding method of plastics - Google Patents
Molding method of plasticsInfo
- Publication number
- JPS56133129A JPS56133129A JP3473780A JP3473780A JPS56133129A JP S56133129 A JPS56133129 A JP S56133129A JP 3473780 A JP3473780 A JP 3473780A JP 3473780 A JP3473780 A JP 3473780A JP S56133129 A JPS56133129 A JP S56133129A
- Authority
- JP
- Japan
- Prior art keywords
- point
- mold
- plastics
- pressing
- press
- 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
Abstract
PURPOSE: To prevent defects to be caused by gases in case of a compression molding of plastics using a mold, by applying pressure first so as to degas heated plastics and then pressing to an eventual shape.
CONSTITUTION: An stock material 3 containing reinforcing member is made by heating into a blank material 4, which is fed to a mold 7. The mold 7 consists of an upper mold 7a and a lower mold 7b. Suppose, in a crank angle of a press, the point 0 is the upper yield point, the point Q2 the lower yield point, the points Q1 and Q3 positioned respectively before and after the lower yield point, and one stroke starts from the point 0 passing through Q1, Q2, Q3 and comes back to the point 0, the material 4 is compressed at the point Q1 by the upward force of a die cushion 8. Therefore the pressing is suspended here to perform breathing for a while. Then at the point Q2 another pressure is applied by the press to obtain a worked product 6.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3473780A JPS595098B2 (en) | 1980-03-21 | 1980-03-21 | Plastic molding method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3473780A JPS595098B2 (en) | 1980-03-21 | 1980-03-21 | Plastic molding method |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17307983A Division JPS5976208A (en) | 1983-09-21 | 1983-09-21 | Molding method of plastics |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56133129A true JPS56133129A (en) | 1981-10-19 |
JPS595098B2 JPS595098B2 (en) | 1984-02-02 |
Family
ID=12422623
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3473780A Expired JPS595098B2 (en) | 1980-03-21 | 1980-03-21 | Plastic molding method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS595098B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58145410A (en) * | 1982-02-22 | 1983-08-30 | Aida Eng Ltd | Forming method of plastic material by mechanical press |
JPS58171314U (en) * | 1982-05-13 | 1983-11-16 | アイダエンジニアリング株式会社 | Mold for molding plastic materials |
-
1980
- 1980-03-21 JP JP3473780A patent/JPS595098B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58145410A (en) * | 1982-02-22 | 1983-08-30 | Aida Eng Ltd | Forming method of plastic material by mechanical press |
JPS58171314U (en) * | 1982-05-13 | 1983-11-16 | アイダエンジニアリング株式会社 | Mold for molding plastic materials |
Also Published As
Publication number | Publication date |
---|---|
JPS595098B2 (en) | 1984-02-02 |
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