发明申请
US20060231227A1 Paper and paper articles and method for making same 审中-公开
纸和纸制品及其制作方法

Paper and paper articles and method for making same
摘要:
This invention relates to a paper material containing cellulosic fibers and from about 0.1 to about 6.0 wt % by weight dry basis expandable microspheres and a density of at least about 6.0 lb/3000 ft2/mil and articles formed there from such as file folders.
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