| 摘要 |
PURPOSE:To provide an apparatus for manufacture of a film wherein a width of an edge part cut from a bandlike film can be minimized and a loss of a raw material can be minimized. CONSTITUTION:In an apparatus for manufacture of a film by inflation molding wherein a cylindrical film 3 is extruded upward from a metal mold 11 of an extruder 1, inflated by feeding air into the cylindrical film 3, introduced into a pinch roll 4 to make a bandlike film 31, and both edge parts 33 of the band like film 31 are cut, a width size-measurer 63 for the cut edge part 33, and a width size-controller of the bandlike film 31 which controls air-supply by a signal from the width size measurer 33 of the edge part, are provided. Further, an edge position-detector of the bandlike film 31, and an edge position controller 8 wherein a transfer means which transfers an edge position by a signal from the edge position-detector is provided, are provided. |
