JPH10264960A - Deformed pipe reinforced by paper tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an outer pipe to be reinforced and also to have appropriate cushioning property by inserting a circular paper tube into a rectangular region of the L-shaped outer pipe and bonding a contact portion between the circular paper tube and the outer pipe for fixing. SOLUTION: An outer pipe 2 is formed by pushing and forming a recessed rim 1 on an end of the pipe having a square opening made of a sturdy cardboard, and a circular paper tube 2 is tightly inserted into its rectangular region for bonding and fixing. Thus when the pipe is used as a pillar, even if strong pressure is applied to the outer pipe 2, it may not be easily crushed since the paper tube 3 has been inserted into the pipe 2 for reinforcement. In addition, when the cardboard is relatively thin, the paper tube 3 appropriately flexes to serve as a cushion. Further, since an internal wall of the recessed rim 1 comes along a corner of a packed article, packing can be reliably done.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deformed cylinder having a concave edge.

[0002]

2. Description of the Related Art A conventional deformed cylinder has a shape in which an opening is formed in an L-shape by placing a stiff paper tube in a mold and compressing it.

[0003]

As in the prior art, a tube deformed into an L-shape maintains its strength by the strength of the waist due to the thickness of the paper, and the only way to further increase the strength is to increase the thickness. However, there is a problem that even if it becomes heavy and has a cushioning property by being bent rather than strengthened, it may be bent from a corner portion. The present invention aims at solving the problems of the prior art.

[0004]

Means for Solving the Problems As a method of reinforcing an L-shaped outer cylinder, a circular tube is inserted into a corner region of the outer tube, and a contact portion between the circular tube and the outer tube is bonded and fixed. Even if force is applied from the side of the outer cylinder, it is reinforced by the presence of the inner cardboard tube, and the cardboard tube is circular, so if it is thin, it will flex moderately and have cushioning properties Becomes possible.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention uses rigid cardboard as a material, and if described with reference to the drawings, in FIG. 1 of a perspective view showing an embodiment of the present invention, the opening shape is a square. One edge of the tube is pushed in to provide a recessed edge 1, a tube deformed by recessing the recessed edge 1 is defined as an outer cylinder 2, the outer cylinder 2 is defined as an inner wall 4 defined by the recessed edge 1, and an outer wall Is an outer wall 5, a wall sandwiched between the inner wall 4 and the outer wall 5 is a thick wall, and the opening shape of the outer cylinder 2 is L
Although it is desirable that the shape is a U-shape, the shape may be a U-shape or a U-shape, and the paper tube 3 is inserted in close contact with the back side of the recessed edge 1, in other words, the corner region of the outer cylinder 2, The contact point between the paper tube 3 and the outer tube 2 is on the back side of the recessed edge 1 and the outer wall 5, and it is desirable that these contact portions are bonded and fixed. Since the width of the wall 6 is smaller, the paper tube 3 does not roll in the outer cylinder 2, but the adhesive side increases the strength of the outer cylinder 2 because the back side of the hollow edge 1 is fixed, When the paper tube 3 bends appropriately, it is possible to provide cushioning.

In FIG. 2 which is a perspective view showing an example of use, when the main body 7 of the present invention is used as a column, the inner wall 4 of the main body 7 is located inside the four corners of the lower frame 8 and the outer wall 5 is located outside. After storing the goods to be packed inside the main bodies 7, the upper frame box 9 is put on from above, and the packing is completed by staking of the prior art, in order to increase the buffering capacity from the vertical direction. A thick cushioning material may be laid inside the frame box, and the inner wall 4 recessed by the recessed edge 1 supports the corners of the packaged product, so that the product can be packed without wobbling and tightly bound. Even if a strong pressure is applied to the main body 7, there is no danger of being crushed because the paper tube 3 is inserted into the outer cylinder 2 and reinforced, and even when the paper is relatively thin, The paper tube 3 bends appropriately and plays a role of a cushion.

[0007]

According to the present invention, since the paper tube is reinforced inside the outer cylinder, it is not crushed even if pressure is applied to the main body, and when used as a support, the hollow inner wall follows the corner of the product to be packed. Can be assured.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a perspective view showing an example of use.

[Explanation of symbols]

 1 hollow edge 2 outer cylinder 3 paper tube

Claims (1)

[Claims] 1. A paper tube 3 is inserted in close contact with a corner region of an outer cylinder 2 deformed by depressing a recessed edge 1, and the outer cylinder 2 is reinforced by inserting the paper tube 3. Tube reinforced deformation cylinder.