JPS55146721A - Production of molded article of thermoplastic resin - Google Patents
Production of molded article of thermoplastic resinInfo
- Publication number
- JPS55146721A JPS55146721A JP8876978A JP8876978A JPS55146721A JP S55146721 A JPS55146721 A JP S55146721A JP 8876978 A JP8876978 A JP 8876978A JP 8876978 A JP8876978 A JP 8876978A JP S55146721 A JPS55146721 A JP S55146721A
- Authority
- JP
- Japan
- Prior art keywords
- thermoplastic resin
- mold
- component
- particles
- foaming thermoplastic
- 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
Links
Abstract
PURPOSE: To obtain a foam-molded article with a non-foamed resin as an outside layer in a short molding cycle by a method wherein a mixture of non-foaming thermoplastic resin particles and special foaming thermoplastic resin particles is heated and melted while being moved within a mold.
CONSTITUTION: A mixture of (A) particles of a non-foaming thermoplastic resin (e.g., polyethylene, polypropylene) and (B) particles of (a) a foaming thermoplastic resin having a melting point lower than that of the component (A) (e.g., polyethylene) blended with (b) a thermal cracking type foaming agent (e.g., p-toluenesulfonyl semicarbazide), is put in a mold, and then heated and melted while being moved within the mold by vibrating the mold, for example, through rotation. This treatment results in that the resins are fused together integrally and the component (b) is cracked and caused to foam. In this case, the ratio of the heat capacity of component (B) to that of component (A) is set to be equal to or greater than 50.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8876978A JPS55146721A (en) | 1978-07-19 | 1978-07-19 | Production of molded article of thermoplastic resin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8876978A JPS55146721A (en) | 1978-07-19 | 1978-07-19 | Production of molded article of thermoplastic resin |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55146721A true JPS55146721A (en) | 1980-11-15 |
Family
ID=13952056
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8876978A Pending JPS55146721A (en) | 1978-07-19 | 1978-07-19 | Production of molded article of thermoplastic resin |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55146721A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0666669A (en) * | 1991-07-30 | 1994-03-11 | Shizuoka Prefecture | Method and equipment for inspecting canned product |
-
1978
- 1978-07-19 JP JP8876978A patent/JPS55146721A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0666669A (en) * | 1991-07-30 | 1994-03-11 | Shizuoka Prefecture | Method and equipment for inspecting canned product |
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