JPS56145940A - Molding material for audio - Google Patents

Molding material for audio

Info

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
Application number
JP4858580A
Other languages
Japanese (ja)
Inventor
Nobuhiro Tsukagoshi
Shinichi Yokozeki
Sumio Hagiwara
Masataka Uchitoi
Toshikazu Yoshino
Yasuyuki Arai
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.)
Pioneer Corp
Original Assignee
Pioneer Electronic Corp
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 Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Priority to JP4858580A priority Critical patent/JPS56145940A/en
Publication of JPS56145940A publication Critical patent/JPS56145940A/en
Pending legal-status Critical Current

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
JP4858580A 1980-04-15 1980-04-15 Molding material for audio Pending JPS56145940A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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