| 摘要 |
PROBLEM TO BE SOLVED: To make a boundary of a multilayered part and single-layered parts of both ends, in a multilayered film with both ends formed in a single layer, sharp and to uniformize thickness of each of the layers of a multilayered product part in a width direction.SOLUTION: There is provided a method for manufacturing a multilayered film, in which at least two kinds of molten resins are joined in at least two layers in a feed block to be extruded from a single layer die after a laminated body flow is formed. A distribution pin 11 having at least two cutout grooves 12 separated by a partition wall 14a is provided to a resin joining portion in the feed block, and at least two kind of molten resins different from each other are made to pass and join in the at least two grooves. |
