公开(公告)号：US4895688A

公开(公告)日：1990-01-23

申请号：US261310

申请日：1988-10-24

申请人： Tsunehisa Shigetani ,  Masahiro Kamiya ,  Tatsuo Miyakoda ,  Katsuhiko Sakata ,  Toshio Inada ,  Tatsumi Okada

发明人： Tsunehisa Shigetani ,  Masahiro Kamiya ,  Tatsuo Miyakoda ,  Katsuhiko Sakata ,  Toshio Inada ,  Tatsumi Okada

IPC分类号： B29C47/40 ,  B29C47/64 ,  G03C1/79

CPC分类号： B29C47/402 ,  B29C47/38 ,  B29C47/6093 ,  G03C1/79 ,  B29C47/0009

摘要： A support for photographic paper is produced by a method including the steps of coating one or two surfaces of a substrate sheet with a resinous melt includes a water-proof thermoplastic polymer and a pigment, by a melt-extrude-coating method, and solidifying the coating layer of the resinous melt on the substrate sheet, and wherein at least one melt-kneading procedure is applied to the resinous melt in a melt extruder having a pair of biaxial screws engaged with each other and satisfying the relationship (i)L.gtoreq.20D (I)wherein L is a length of the screws and D is a diameter of the screws, and provided with at least one pair of kneading disks located in at least a portion of the screws.

摘要翻译： 通过包括以下步骤的方法制造相纸的载体：通过熔融挤出 - 涂布法将含有树脂熔融物的基片的一个或两个表面涂覆在防水热塑性聚合物和颜料上的步骤， 在基材片上的树脂熔融物的涂层，并且其中在具有彼此啮合的一对双轴螺杆的熔融挤出机中，将至少一种熔融捏合程序施加到树脂熔体上，并且满足关系式（i）L> / = 20D（I）其中L是螺钉的长度，D是螺钉的直径，并且设置有至少一对位于至少一部分螺钉中的捏合盘。