Patent ID: 8292071
Filing Date: 2012-10-23
Classification: B65D

Abstract:
1. A package structure to store coreless roll paper having a hollow portion instead of a winding core in the axis portion thereof, the package structure comprising: an outer case for storing roll paper; and a lower holding member and an upper holding member each having a concave portion with an inside diameter that closely matches the outside diameter of the roll paper, and also each having an external shape that fits the outer case; the lower holding member being placed in the outer case with its concave portion facing upward; and the upper holding member being disposed in the outer case at a location above the lower holding member with its concave portion facing downward, wherein at least one of the lower holding member and the upper holding member has an external shape that defines a space between said at least one of the lower holding member and the upper holding member and the inner wall of the outer case, and wherein said at least one of the lower holding member and the upper holding member comprises: a plate-like base member having a shape that fits the outer case; a plate-like second holding member that lies on the base member, the plate-like second holding member having a second through hole formed therein and an external shape that defines a space between the plate-like second holding member and the inner wall of the outer case; and a plate-like first holding member that lies on the second holding member, the plate-like first holding member having a first through hole formed therein and an external shape that defines a space between the plate-like first holding member and the inner wall of the outer case; wherein one of the sides of the first holding member is connected to one of the sides of the second holding member in at least a portion thereof; the first holding member and the base member are connected to each other at the side opposite to that which connects to the second holding member in at least a portion thereof, and the concave portion is composed of the first through hole and the second through hole.