公开(公告)号：US5656675A

公开(公告)日：1997-08-12

申请号：US555203

申请日：1995-11-08

申请人： Toshio Kobayashi ,  Keinosuke Morita ,  Seishi Suzuki

发明人： Toshio Kobayashi ,  Keinosuke Morita ,  Seishi Suzuki

IPC分类号： C08K5/00 ,  C08K7/14 ,  C08L53/00 ,  C08J9/04

CPC分类号： C08L53/00 ,  C08K5/0025 ,  C08K7/14 ,  Y10S521/915 ,  Y10T428/31587

摘要： A process for producing an automotive molded roof material is provided which comprises sheeting a foamable sheet forming composition comprising a specified propylene resin, a glass fiber, a radical initiator, a crosslinking auxiliary and a foaming agent in specific proportions into a foamable sheet, lining one side of the foamable sheet with a backing sheet so as to integrate these and irradiating the foamable sheet with ionizing radiation to thereby crosslink the propylene resin, followed by heating the foamable sheet so as to cause the foamable sheet to foam, placing a cover sheet on the other side of the foamed sheet before the sheet cools to solidify and press molding the cover sheet on the foamed sheet to cover. There is also provided an automotive molded roof material produced by the above process. An automotive molded roof material is obtained which can be recycled, is lightweight and has high rigidity.

摘要翻译： 提供了一种制造汽车模塑屋顶材料的方法，其包括将特定丙烯树脂，玻璃纤维，自由基引发剂，交联助剂和特定比例的发泡剂以特定比例包含在可发泡片材中的可发泡片材成型组合物， 将其与该片材一体化，使电离辐射照射可发泡片材，由此使丙烯树脂交联，然后加热发泡片材，使发泡片材发泡，将覆盖片材放置在 在片材冷却固化之前的发泡片材的另一侧，并将发泡片材上的覆盖片压成型以覆盖。 还提供了通过上述方法制造的汽车模制屋顶材料。 得到汽车模制屋顶材料，其可再循环，重量轻且刚性好。