MULTILAYER FILM INFLATION MOLDING MACHINE AND MULTILAYER FILM INFLATION MOLDING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an end product taking advantage of the characteristics of a multilayered resin efficiently and having little curl and no haze and excellent in transparency. SOLUTION: The multilayer film inflation molding machine comprises an air-cooling mechanism 17 air-cooling a multilayer molded tube shape membrane 5 arranged below a multilayer molding die 3 and extruded in the gravity direction from the above multilayer molding die 3, the 1st water-cooled mechanism 18 located in the gravity direction from the air-cooling mechanism 17, a drainer 51 located in the gravity direction from the 1st water-cooled mechanism 18, and the 2nd water-cooled mechanism 19 arranged in the gravity direction from the drainer 51 and discharging the 2nd cooling water. The 1st water-cooled mechanism forms the bottom opening of an annular cooling stream which streams downward the 1st cooling water in the shape of a layer in the periphery of the multilayer molding tube shape membrane 5. The drainer 51 has a radiation flowing surface which makes the 1st cooling water streaming downward from the bottom opening of the annular cooling stream in the shape of a layer flow in a radiation shape. COPYRIGHT: (C)2005,JPO&NCIPI