| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a simple method of manufacturing a flexible packaging bag having a checking function utilizing a film-formed non-return extraction nozzle which is arranged so as to protrude from one side, e.g. an upper end of one side, of a packaging bag formed by sealing the front- and back-surface-side portions of one or two packaging laminated films half-folded in the central area of the width to join together and so that the superimposed soft plastic films are mutually adhered through a liquid material to be packaged. <P>SOLUTION: The method of manufacturing a flexible packaging bag comprises joining, by fusion, a sealant layer on the outer surface of the base end part of a film-formed non-return extraction nozzle with a sealant layer in one side portion of a packaging laminate film fed continuously and caused to run, in such a posture as to protrude from a side edge, forming one or more concave protrusions, convex protrusions or convex/concave protrusions extending in the running direction of the packaging laminated film or obliquely to the running direction, at least in a part of an area of the packaging laminated film contributing to the division for charging packaging space of a material to be packaged and, with the individual sealant layers of the packaging laminated film on the front and the back surface side made opposite to one another, and forming, in order, vertical seal parts passing through the fusion-joined portions of the no-return extraction nozzle and lateral seal parts extending in the width direction of the film, at intervals in the running direction of the film, continuously in the running direction of the film, in each sealant layer on both the front and the back side. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
