发明名称 |
Method for reducing the water vapour permeability of paper |
摘要 |
The invention relates to a method of reducing the water vapor permeability of a sheet of paper, which comprises the step of coating the paper sheet with a film of 5-30 g/sq.m. of a coating medium consisting of a rosin sizing dispersion containing additives improving the film-forming properties of the coating medium, which additives include surfactants and waxes. It also deals with a paper so produced.
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申请公布号 |
US5358790(A) |
申请公布日期 |
1994.10.25 |
申请号 |
US19910792948 |
申请日期 |
1991.11.15 |
申请人 |
PATRIA PAPIER & ZELLSTOFF AG FRANTSCHACH |
发明人 |
RUEF, WALTER;BACHLER, JOSEF |
分类号 |
D21H19/56;D21H19/18;D21H19/46;D21H21/16;(IPC1-7):B32B9/06 |
主分类号 |
D21H19/56 |
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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