发明名称 |
Method for reducing edge curl on green sheets. |
摘要 |
<p>A process for reducing edge curl in green sheets is which the sheets are first placed in a chamber at about 95% relative humidity for a period of about 2 weeks at room temperature. In this part of the process, the sheets absorb water which causes the internal stresses in the green sheet to relax. Thereafter, the sheets are dried by placing them in a chamber at about 35% relative humidity for a period of about 1 week at room temperature. In this period, the absorbed water evaporates and the green sheets become firm with less edge curl than they exhibited prior to the treatment.</p> |
申请公布号 |
EP0264569(A1) |
申请公布日期 |
1988.04.27 |
申请号 |
EP19870111963 |
申请日期 |
1987.08.18 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
KELLNER, BENEDIKT MARIA JOHANNES;SCILLA, SALVATORE JAMES |
分类号 |
B28B11/00;B28B1/30;C04B35/632;C04B35/64;H05K1/03;H05K3/46;(IPC1-7):C04B33/30 |
主分类号 |
B28B11/00 |
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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