发明名称 |
PRODUCT CONTAINING HIGH DENSITY SKINS ON A LOW DENSITY CORE |
摘要 |
<p>A fiberboard is manufactured having relatively high density skins on a relatively low density core by including urea in at least the surface fibers of a consolidated mat, having a density of less than 35 pounds per cubic foot, and then hot-pressing the consolidated mat at a temperature of at least 525.degree. F. to form a board having high density surface skins.</p> |
申请公布号 |
CA1106568(A) |
申请公布日期 |
1981.08.11 |
申请号 |
CA19770288069 |
申请日期 |
1977.10.04 |
申请人 |
MASONITE CORPORATION |
发明人 |
LUCK, ALLAN J.;CLARKE, JOHN T.;HOFFMAN, MICHAEL R. |
分类号 |
B27N3/04;B27N3/06;B27N7/00;C08L97/02;D06N7/06;(IPC1-7):29J5/04 |
主分类号 |
B27N3/04 |
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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