| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a film-like check nozzle excelling in a tearing property, maintaining tensile strength of the film-like check nozzle while effectively reducing tearing force required for opening the nozzle, and accurately guiding the travel direction of a tear of the nozzle. <P>SOLUTION: The flat film-like check nozzle for a soft packaging bag for filling a liquid substance is adapted to prevent the intrusion of outside air into the bag by interposing the liquid substance between the inner surface side sealant layers of an overlapping pair of front and rear laminated plastic films each comprising a base film layer, the inner surface side sealant layer and an outer surface side sealant layer, the sealant layers being laminated to hold both sides of the base film layer. Each of the surfaces of the inner surface side sealant layers in tear predetermined positions on the nozzle tip side of the pair of front and rear laminated plastic films composing the nozzle is provided with one or more tear guide lines extended traversing a pouring passage. <P>COPYRIGHT: (C)2012,JPO&INPIT |
