JPS56145940A - Molding material for audio - Google Patents
Molding material for audioInfo
- Publication number
- JPS56145940A JPS56145940A JP4858580A JP4858580A JPS56145940A JP S56145940 A JPS56145940 A JP S56145940A JP 4858580 A JP4858580 A JP 4858580A JP 4858580 A JP4858580 A JP 4858580A JP S56145940 A JPS56145940 A JP S56145940A
- Authority
- JP
- Japan
- Prior art keywords
- molded article
- graphite powder
- molding
- polystyrene
- roller
- 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
Landscapes
- Diaphragms For Electromechanical Transducers (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
PURPOSE: To provide the titled material which can produce a molded article which is lightweight and has high rigidity, high elasticity and high internal loss, by blending a scaly graphite powder with polystyrene.
CONSTITUTION: 90W10wt% Polystyrene (A) (which may be used together with 2W50wt% rubber material such as a nitrile-butadiene rubber) is mixed with 10W 90wt% scaly graphite powder (B) having an average particle diameter of not larger than 20μ. The mixture is kneaded at the softening temp. of the resin by using a kneader or a roller to obtain the desired molding material for audio. The above molding material is used to produce a molded article in which the graphite powder is orientated along the surface of the molded article by press molding (or compression molding). But, when said mixture is rolled into a sheet material by using a roller in the above kneading operation, said molded article may be produced by a vacuum molding method or a pressure forming method, because the graphite powder has already been orientated in parallel with the surface of the sheet.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4858580A JPS56145940A (en) | 1980-04-15 | 1980-04-15 | Molding material for audio |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4858580A JPS56145940A (en) | 1980-04-15 | 1980-04-15 | Molding material for audio |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56145940A true JPS56145940A (en) | 1981-11-13 |
Family
ID=12807470
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4858580A Pending JPS56145940A (en) | 1980-04-15 | 1980-04-15 | Molding material for audio |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56145940A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6908950B2 (en) | 2001-10-25 | 2005-06-21 | Owens Corning Fiberglas Technology, Inc. | Asphalt filled polymer foam |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5487209A (en) * | 1977-12-23 | 1979-07-11 | Pioneer Electronic Corp | Method of fabricating acoustic device vibrating plate |
JPS5548226A (en) * | 1979-05-25 | 1980-04-05 | Pioneer Electronic Corp | Compound and its preparation |
-
1980
- 1980-04-15 JP JP4858580A patent/JPS56145940A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5487209A (en) * | 1977-12-23 | 1979-07-11 | Pioneer Electronic Corp | Method of fabricating acoustic device vibrating plate |
JPS5548226A (en) * | 1979-05-25 | 1980-04-05 | Pioneer Electronic Corp | Compound and its preparation |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6908950B2 (en) | 2001-10-25 | 2005-06-21 | Owens Corning Fiberglas Technology, Inc. | Asphalt filled polymer foam |
US7166646B2 (en) | 2001-10-25 | 2007-01-23 | Owens Corning Fiberglas Technology, Inc. | Asphalt-filled polymer foams |
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