发明名称 |
Strength-grading of veneer sheets |
摘要 |
A method of enhancing the strength and of reducing strength variations of multi-layer wood, plywood or similar by measuring the density of the veneer sheets used in the production and by grading the veneer sheets accordingly. The density of the veneer sheets is measured in a manner known per se by using a high-frequency electromagnetic resonator (2). To build up layers of multi-layer wood, plywood or similar (12), veneer sheets confirmed to have a higher density are graded as surface sheets (13) and/or local density variations of central sheets (14) are reduced by mixing veneer sheets with various densities.
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申请公布号 |
US5524771(A) |
申请公布日期 |
1996.06.11 |
申请号 |
US19940204732 |
申请日期 |
1994.03.02 |
申请人 |
FINNFOREST OY |
发明人 |
KAIRI, MATTI;HELMINEN, PERTTI |
分类号 |
B07C5/34;(IPC1-7):B07C5/14 |
主分类号 |
B07C5/34 |
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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