JPS5674801A - Rubber sheet for turntable - Google Patents

Rubber sheet for turntable

Info

Publication number
JPS5674801A
JPS5674801A JP15112379A JP15112379A JPS5674801A JP S5674801 A JPS5674801 A JP S5674801A JP 15112379 A JP15112379 A JP 15112379A JP 15112379 A JP15112379 A JP 15112379A JP S5674801 A JPS5674801 A JP S5674801A
Authority
JP
Japan
Prior art keywords
factice
group
turntable
rubber
polynorbornene
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
JP15112379A
Other languages
Japanese (ja)
Inventor
Shutaro Nakahira
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.)
HOUYUU GOMME KK
HOUYUU GOMU KK
Original Assignee
HOUYUU GOMME KK
HOUYUU GOMU KK
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 HOUYUU GOMME KK, HOUYUU GOMU KK filed Critical HOUYUU GOMME KK
Priority to JP15112379A priority Critical patent/JPS5674801A/en
Priority to US06/285,102 priority patent/US4370371A/en
Priority to DE19803049878 priority patent/DE3049878A1/en
Priority to EP19800902182 priority patent/EP0041072B1/en
Priority to PCT/JP1980/000282 priority patent/WO1981001481A1/en
Priority to NL8020426A priority patent/NL8020426A/en
Priority to AU65722/80A priority patent/AU532870B2/en
Priority to GB8110983A priority patent/GB2074778B/en
Publication of JPS5674801A publication Critical patent/JPS5674801A/en
Pending legal-status Critical Current

Links

Landscapes

  • Compositions Of Macromolecular Compounds (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

PURPOSE: To prevent the howling to ensure a reproduced sound which is faithful to the original sound, by giving a specified form to one surface of a disk-shaped sheet made of the vulcanized molded product of the rubber composition composed of polynorbornene, factice and oil.
CONSTITUTION: The vulcanized molding is given to the rubber composition composed of the 100pts.wt. polynorbornane only or the mixture of the polynorbornene and other rubber, the 5W500pts.wt. of white-color factice only or the mixture of the said factice and other factice, and 200W1,000pts.wt. oil of one type or more among the aromatic-group, naphthene-group, paraffin-groups, vegetable-group and animal-group, respectively. Thus the rubber sheet is obtained for a turntable. The vulcanized molded product requires 1W15 hardness (Shore hardness), 1W50kg/cm2 tensile strength, 120W1,000% elongation, 40W90% coefficient of impact resilience and 0.93W1.05 specific gravity. Then several units of ribs 2 having a concentric form of 0.3W1.8mm height are provided on one surface of the sheet main body 1, and the notches 3 are given densely to the rib 2. The rib face is turned properly to the turntable or the record disk.
COPYRIGHT: (C)1981,JPO&Japio
JP15112379A 1979-11-20 1979-11-20 Rubber sheet for turntable Pending JPS5674801A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP15112379A JPS5674801A (en) 1979-11-20 1979-11-20 Rubber sheet for turntable
US06/285,102 US4370371A (en) 1979-11-20 1980-11-18 Rubber disc for a record player turntable
DE19803049878 DE3049878A1 (en) 1979-11-20 1980-11-18 RUBBER SHEET FOR TURNTABLE
EP19800902182 EP0041072B1 (en) 1979-11-20 1980-11-18 Rubber sheet for turntable
PCT/JP1980/000282 WO1981001481A1 (en) 1979-11-20 1980-11-18 Rubber sheet for turntable
NL8020426A NL8020426A (en) 1979-11-20 1980-11-18 RUBBERVEL FOR A TURNTABLE.
AU65722/80A AU532870B2 (en) 1979-11-20 1980-11-18 Rubber sheet for turntable
GB8110983A GB2074778B (en) 1979-11-20 1981-04-08 Rubber sheet for turntable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15112379A JPS5674801A (en) 1979-11-20 1979-11-20 Rubber sheet for turntable

Publications (1)

Publication Number Publication Date
JPS5674801A true JPS5674801A (en) 1981-06-20

Family

ID=15511860

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15112379A Pending JPS5674801A (en) 1979-11-20 1979-11-20 Rubber sheet for turntable

Country Status (1)

Country Link
JP (1) JPS5674801A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56157448A (en) * 1980-05-08 1981-12-04 Nippon Zeon Co Ltd Sound barrier material for floor impact and application of the same
JPS5868203A (en) * 1981-10-15 1983-04-23 Houyuu Gomme Kk Stabilizer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56157448A (en) * 1980-05-08 1981-12-04 Nippon Zeon Co Ltd Sound barrier material for floor impact and application of the same
JPS5868203A (en) * 1981-10-15 1983-04-23 Houyuu Gomme Kk Stabilizer

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