| 摘要 |
The present invention relates to a cap sealing method for a packing container capable of firmly coupling a opening and closing cap to an outlet by arranging an expansion part and an attachment part coupled to the inner and outer surfaces of a support formed along the upper circumference of the outlet by primary and secondary sealing processes. A packing container comprises: a square pillar-shaped body having an internal receiving part of which the top and the bottom are opened; an upper cover having the central outlet, and the support with the circular cross section formed along the upper circumference of the central outlet and sealing the upper part of the body; a lower cover for sealing the lower part of the receiving part of the body; and the opening and closing cap having a cap body for closing the outlet of the upper cover, and a snap part formed along the circumference of the cap body and fitted in the support. The cap sealing method for a packing container according to the present invention comprises: a step of inserting the opening and closing cap into the outlet of the upper cover so as to position the cap body of the opening and closing cap at the outlet of the upper cover and the snap part of the opening and closing cap at the support, but inserting the bottom of the cap body to be lower than the support; a primary sealing step of forming the expansion part by pressing the inner bottom wall of the cap body, and surrounding the second quadrant circumference of the support with the expansion part; and a secondary sealing step of forming the attachment part by pressing the end of the snap part of the opening and closing cap, and surrounding the third quadrant circumference of the support with the attachment part. |
