发明名称 |
Method for the improvement of gramophone records |
摘要 |
Gramophone records made of a vinyl chloride based resin are subjected to a treatment with low temperature plasma of a gas having no polymerizability in the plasma condition. A markedly improved anti-static effect is imparted to the surface of the gramophone record which also becomes highly resistant to wearing so that the signal/noise ratio in playing of the gramophone record is remarkably improved even after many times of repeated playing of the record.
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申请公布号 |
US4302307(A) |
申请公布日期 |
1981.11.24 |
申请号 |
US19790060502 |
申请日期 |
1979.07.25 |
申请人 |
SHIN-ETSU CHEMICAL CO. LTD. |
发明人 |
IMADA, KIYOSHI;UENO, SUSUMU;ABE, TOKUJI |
分类号 |
C08J7/00;B29C59/14;B29D17/00;C08J7/12;C08L27/06;G11B3/70;(IPC1-7):C07C3/24 |
主分类号 |
C08J7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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