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1. 发明申请

WO2004076141A3 THIN-LAYER LIGNOCELLULOSE COMPOSITES HAVING INCREASED RESISTANCE TO MOISTURE AND METHODS OF MAKING THE SAME 审中-公开
标题翻译：具有增加耐水分性能的薄层纤维素复合材料及其制备方法
公开(公告)号：WO2004076141A3
公开(公告)日：2004-10-28
申请号：PCT/US2004005415
申请日：2004-02-24
申请人： JELD WEN INC , CLARK RANDY JON , DAVIS WALTER B , ALEXANDER JONATHAN PHILIP
发明人： CLARK RANDY JON , DAVIS WALTER B , ALEXANDER JONATHAN PHILIP
IPC分类号： B27N3/20
CPC分类号： B27N3/083 , B27N3/20 , Y10T428/24 , Y10T428/24355 , Y10T428/24479 , Y10T428/269 , Y10T428/31591
摘要： A method to produce thin-layer lignocellulosic composites, such as wood-based doorskins, that exhibit substantial resistance to moisture is disclosed. In an embodiment, the method includes the steps of forming a mixture including a refined lignocellulosic fiber, wax, and an organic isocyanate resin. The mixture is initially pressed to form a loose mat. Subsequently, the mat is pressed between two dies at an elevated temperature and pressure to further reduce the thickness of the mat and to promote the interaction of the resin with the lignocellulosic fibers. In an embodiment, a release agent is included as part of the fiber mixture, or sprayed onto the surface of the mat. The thin-layer lignocellulosic composites of the present invention exhibit strong surface strength, high adhesiveness, and a 50% reduction in linear expansion and thickness swelling upon exposure to a high moisture environment as compared to thin-layer composites that do not include the isocyanate resin.
摘要翻译：公开了一种产生显示出对湿度的显着抵抗力的薄层木质纤维素复合材料的方法，例如木质门槛。在一个实施方案中，该方法包括形成包含精制木质纤维素纤维，蜡和有机异氰酸酯树脂的混合物的步骤。混合物最初被压制以形成松散垫。随后，将垫在升高的温度和压力下压在两个模具之间以进一步减小垫的厚度并促进树脂与木质纤维素纤维的相互作用。在一个实施方案中，包含脱模剂作为纤维混合物的一部分，或喷涂到垫的表面上。与不含异氰酸酯树脂的薄层复合材料相比，本发明的薄层木质纤维素复合材料表现出强的表面强度，高粘合性和暴露于高湿度环境下的线膨胀和厚度膨胀的50％。

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