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    • 4. 发明授权
    • Process for making engineered lignocellulosic-based panels
    • 制造工程木质纤维素基板的方法
    • US07141195B2
    • 2006-11-28
    • US10655996
    • 2003-09-05
    • Jack G. WinterowdRoger M. ShantzDaniel V. HansonMichael N. Taylor
    • Jack G. WinterowdRoger M. ShantzDaniel V. HansonMichael N. Taylor
    • B29C59/00B29C67/24B29C67/00
    • B27N1/003B27N1/02B27N3/002
    • A process for making engineered lignocellulosic-based panels with superior strength and dimensional stability. The process comprising adding to green lignocellulosic particles a low-nitrogen content, high molecular weight, phenol-formaldehyde resin before the green particles are dried. The resin is added in an amount from about 1 to 25 weight percent based on the dry weight of the green lignocellulosic particles. The resin has a nitrogen content of from about 0 to 3%, a viscosity of from about 20 to 2000 cps at 20° C., and a molar ratio of formaldehyde/phenol of from about 1.2 to 3.0. The green lignocellulosic particles treated with the resin are dried until the particles have a moisture content of from 1 to 8%. A second resin is added to the dried particles and then the dried particles are consolidated under heat and pressure to form the engineered panel.
    • 制造具有优异强度和尺寸稳定性的工程木质纤维素基板的方法。 该方法包括在绿色颗粒干燥之前向绿色木质纤维素颗粒中加入低氮含量的高分子量酚醛树脂。 基于绿色木质纤维素颗粒的干重,树脂的添加量为约1至25重量%。 该树脂的氮含量为约0-3%,在20℃下的粘度为约20至2000cps,甲醛/苯酚的摩尔比为约1.2至3.0。 将用树脂处理的绿色木质纤维素颗粒干燥直到颗粒的含水量为1至8%。 将第二树脂加入到干燥的颗粒中,然后将干燥的颗粒在加热和加压下固化以形成工程板。