公开(公告)号：US20060019113A1

公开(公告)日：2006-01-26

申请号：US11194061

申请日：2005-07-29

申请人： Darrell Sparks ,  Grant LaFontaine ,  Jennifer Litke ,  Robert Smith

发明人： Darrell Sparks ,  Grant LaFontaine ,  Jennifer Litke ,  Robert Smith

IPC分类号： B32B27/00

CPC分类号： B32B27/08 ,  B32B21/08 ,  B32B27/20 ,  B32B27/308 ,  B32B2250/02 ,  B32B2250/24 ,  B32B2307/408 ,  B32B2307/418 ,  B32B2307/554 ,  B32B2309/105 ,  B32B2333/12 ,  Y10T428/24372 ,  Y10T428/25 ,  Y10T428/26 ,  Y10T428/31855

摘要： A plastic sheet product having a matte finish comprises a core layer of a thermoplastic polymer and at least one layer of a capstock composition which overlies, and is bonded to, at least one face of the core layer. The capstock composition comprises the same or different thermoplastic polymer and contains a plurality of discrete particles immiscible with and dispersed in the thermoplastic polymer of the capstock composition. The sheet product may be prepared by the co-extrusion of the thermoplastic polymer and the capstock composition, and in a particular embodiment, such co-extrusion may be conducted by means of a feedblock. In a particular embodiment, the thermoplastic polymer of the core layer and that of the capstock composition may be the same, such as in the instance of a methylmethacrylate-methylacrylate copolymer. Sheet products prepared in accordance with the invention exhibit improved post-processability and ease of surface maintenance, and may be fabricated into a variety of products including light diffusers, projection screens, and the like.

摘要翻译： 具有无光饰面的塑料片制品包括热塑性聚合物的芯层和至少一层覆盖在核心层的至少一个表面上并且结合至芯层的至少一个表面的覆盖材料组合物层。 所述覆盖材料组合物包含相同或不同的热塑性聚合物，并且包含与所述覆盖材料组合物的热塑性聚合物不混溶和分散的多个离散颗粒。 片材产品可以通过热塑性聚合物和覆盖材料组合物的共挤出来制备，并且在特定的实施方案中，这种共挤出可以通过进料块进行。 在一个具体实施方案中，芯层的热塑性聚合物和覆盖层组合物的热塑性聚合物可以是相同的，例如甲基丙烯酸甲酯 - 甲基丙烯酸酯共聚物的情况。 根据本发明制备的片材产品具有改进的后加工性和表面维护的容易性，并且可以制造成包括光漫射器，投影屏幕等的各种产品。