Packaging method and packaging container
View Patent ↗A packaging container comprises an openable outer case and a bag for packaging a resin material in the outer case. The bag is partially turned back at fold portions so that part of the bag is turned inside out, and at least part of the out-turned part is fixed as a fixing part to any part other than the bag. The inner surfaces of the bag at the fold portions are placed in contact with each other, forming a contact portion, to seal the resin material. The contact portion is placed in correspondence with an openable part of an opening flap of the outer case.
1. A packaging method comprising the steps of:
setting a bag in which contents are packed, in an openable outer case provided with an opening flap, wherein the contents are adhesive and a frictional force is created between the contents and the bag;
turning back part of the bag at fold portions so that the part of the bag having an open end is turned inside out around the opening flap, such that the inner surface of the bag at the out-turned portion of the bag faces the environment surrounding the outer case;
fixing at least part of the out-turned part as a fixing part the outer case by inserting the fixing part in at least one cutout in at least one side surface of the outer case;
supporting the outer case with at least one arm;
bringing inner surfaces of the bag at the fold portions into contact with each other, forming a contact portion, wherein the adhesive contents seal themselves against the fold portions of the bag by their own weight when the outer case is supported with the at least one arm; and
placing the contact portion of the bag in correspondence with an openable part of the flap of the outer case;
wherein the bag is configured so that the adhesive contents push apart the opening flap of the bag and empty themselves by their own weight once the at least one arm is removed.
2. The packaging method according to claim 1 , wherein at least two opposite surfaces of side surfaces of the outer case are formed with cutouts, and the bag is partially inserted in the cutouts to be fixed to the outer case.
3. The packaging method according to claim 1 , wherein the fixing part of the bag is placed in a position to pull the out-turned part of the bag when the outer case is opened.
4. The packaging method according to claim 2 , wherein the fixing part of the bag is placed in a position to pull the out-turned part of the bag when the outer case is opened.
5. The packaging method according to claim 1 , wherein the contents comprise a resin material.
6. The packaging method according to claim 5 , wherein the resin material is an adhesive material.
7. The packaging method according to claim 1 , wherein the bag comprises a multilayered polyolefin film having a high gas barrier property.
8. The packaging container according to claim 1 , wherein the contents comprise a resin material.
9. The packaging container according to claim 8 , wherein the resin material is an adhesive material.
10. The packaging container according to claim 1 , wherein the bag comprises a multilayered polyolefin film having a high gas barrier property.