发明名称 |
WATER RESISTANT PAPERBOARD AND METHOD OF MAKING SAME |
摘要 |
<p>A paper sheet or paperboard, such as boxboard, cardboard and the like has one surface coated with a surfactant to prevent, or at least retard the penetration Or moisture through the thickness of the paperboard to the other surface thereof. A method of making a paper sheet or paperboard which has an improved resistance to or retards the penetration of moisture through the thickness of the paperboard comprises the sequential steps of applying a thin coating of a surfactant to one surface of the paperboard, and immediately drying the coated surfactant on the paperboard.</p> |
申请公布号 |
CA2037072(C) |
申请公布日期 |
1996.08.27 |
申请号 |
CA19912037072 |
申请日期 |
1991.02.26 |
申请人 |
BROWN & WILLIAMSON TOBACCO CORPORATION |
发明人 |
ST. CHARLES, FRANK KELLEY |
分类号 |
B65D5/56;(IPC1-7):D21H21/16;D21H19/10 |
主分类号 |
B65D5/56 |
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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