发明名称 |
Optical disc and method for making same. |
摘要 |
An optical disc comprises two facing disc units at least one of which has a recording layer formed on its surface facing to the other disc unit. The disc units are bonded together by a layer of adhesive which may be a room-temperature curing thermosetting adhesive having a glass transition temperature higher than the upper limit of the range of temperatures of environments in which the disc may be used. Alternatively, the adhesive may be a room-temperature curing two-pack epoxy adhesive which comprises a bisphenol epoxy resin base agent and a modified aliphatic polyamine curing agent, and which has a viscosity of 100-1000 cps, a pot life of one hour or more, a cure shrinkage of 1.0% or less, a water absorption, after curing, of 0.2% or less, and a Shore hardness, after curing, of 80-90. |
申请公布号 |
EP0390413(A2) |
申请公布日期 |
1990.10.03 |
申请号 |
EP19900303033 |
申请日期 |
1990.03.21 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
TOIDE, YUKARI, C/O MITSUBISHI DENKI K.K.;TSUTSUMI, KAZUHIKO, C/O MITSUBISHI DENKI K.K.;TAGUCHI, MOTOHISA, C/O MITSUBISHI DENKI K.K.;KURAMOTO, KAZUO, C/O MITSUBISHI DENKI K.K.;TSUCHIHASHI, MASARU, C/O MITSUBISHI DENKI K.K. |
分类号 |
B29C65/48;G11B7/252;G11B7/26 |
主分类号 |
B29C65/48 |
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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