发明名称 |
Rigid fiberboard |
摘要 |
A rigid fiberboard suitable as a replacement for the natural woods presently used for the manufacture of pencils is provided. The fiberboard essentially comprises a fiber network, together with a filler and binder. A lubricant is added to improve the sharpening characteristics of the fiberboard, and dimensional stability is preserved by incorporating a waterproofing agent to minimize the absorption of water by the fiber network.
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申请公布号 |
US5346930(A) |
申请公布日期 |
1994.09.13 |
申请号 |
US19930048677 |
申请日期 |
1993.04.19 |
申请人 |
LYDALL, INC. |
发明人 |
MAINE, RICHARD L.;COOK, JOSEPH W. |
分类号 |
B43K19/16;B27N3/04;B43K19/02;B43K19/14;C08J5/04;(IPC1-7):C09D13/00;C08K11/00 |
主分类号 |
B43K19/16 |
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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