| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a plug having high barrier type pull-ring showing superior heat resistance and pressure resistance when filling contents, showing a long-period superior storage at normal temperature/an excellent protection of the contents during a distribution process and further showing easy seal opening. <P>SOLUTION: A spout 100 is constituted such that a pouring-out cylinder 120 is vertically arranged at an annular base part circumferentially having a flange at an outer circumferential surface of a lower end, an inner lower side of the pouring-out cylinder is sealed by a sealing plate 130, a slit having a V-shaped sectional shape is formed from above at a predetermined opening position of the sealing plate, an annular thin-walled weak line 132 is formed at its lower surface, at least an entire lower surface of the sealing plate has a polyethylene layer 310 at the upper-most layer and a polyethylene layer 330 at the lower-most layer, its intermediate layer has a barrier vapor deposited polyethylene terephthalate film layer 320, and then a high-barrier type laminated film 300 having a cut at a position corresponding to the annular thin-walled weak line arranged at the polyethylene terephthalate vapor-deposited base film 321 is thermally melted and fitted through an insert injection molding process. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
