公开(公告)号：US20050133951A1

公开(公告)日：2005-06-23

申请号：US10898555

申请日：2004-07-26

申请人： John Muller ,  Roger Wittenberg

发明人： John Muller ,  Roger Wittenberg

IPC分类号： B27N3/28 ,  B29C47/88 ,  B29C47/94

CPC分类号： B27N3/28 ,  B29C48/09 ,  B29C48/12 ,  B29C48/911 ,  B29C48/94

摘要： The invention relates to a method for making a dimensionally stable wood-thermoplastic composite material composed of a wood component and a thermoplastic component comprising the steps of forming a wood-thermoplastic mass at a temperature above the melting temperature of the thermoplastic component. The mass is then passed through a converging die to form a shaped extrudate profile having a cross sectional shape wherein at least a part of the converging die is maintained at a substantially higher temperature than that of the mass. The profile is then fed through a low friction thermally insulating land section, the land section having the substantially the same cross sectional shape as the exit end of the converging die. The profile is then quenched in a non-oxidizing environment to form a substantially dimensionally stable outer shell around the profile, the shell having a temperature below the melting temperature of the thermoplastic component. The invention also relates to a die assembly for making a wood-thermoplastic composite material.

摘要翻译： 本发明涉及一种用于制造由木材组分和热塑性组分组成的尺寸稳定的木质 - 热塑性复合材料的方法，包括以下步骤：在高于热塑性组分的熔融温度的温度下形成木质 - 热塑性物质。 然后将质量通过会聚模具以形成具有横截面形状的成形挤出物轮廓，其中会聚模的至少一部分保持在比质量的温度基本上更高的温度。 然后将该轮廓通过低摩擦绝热陆地区域进给，该陆部区段具有与会聚模具的出口端基本相同的横截面形状。 然后将轮廓在非氧化环境中淬火以在轮廓周围形成基本上尺寸稳定的外壳，壳体具有低于热塑性组分的熔融温度的温度。 本发明还涉及一种用于制造木质 - 热塑性复合材料的模具组件。