JPS5929870Y2 - cardboard box - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a cardboard box.

Conventionally, a cardboard box is made by folding a corrugated inner core base paper with cardboard liner paper (hereinafter referred to as liner paper) glued onto both sides of the base paper into a box shape.

When in use, store the item in this cardboard box, fold in the flap and apply adhesive to the flap.
The opening is closed and packed by bonding the flaps together.

The person who receives the cardboard box peels off the flap and takes out the stored items, but the opening operation to peel off the flap requires extremely force, and when opening a large number of cardboard boxes, it is necessary to The task becomes difficult.

In addition, when cardboard boxes are used to store and pack low-priced and bulky items such as candy, the cost of the cardboard boxes can account for more than 10% of the items stored, and they are not often reused. , the cost of this box cannot be ignored.

However, in order to save on box costs, for example, even if a cardboard box is constructed using only one-sided corrugated paper with a liner bonded only to the outer surface of a corrugated inner core base paper, there will be problems in maintaining strength, especially when cardboard boxes are stacked in large numbers. Therefore, it is essential to maintain the strength to cope with this.

Therefore, the present invention aims to eliminate the above-mentioned drawbacks of the conventional cardboard box and provide a cardboard box that is inexpensive and easy to open while maintaining sufficient strength and refractive power.

An embodiment of the present invention will be described based on the drawings. Four flaps 2 and 3 are attached to each side of the upper edge of the sheath 1, which constitutes the four walls excluding the top and bottom of a right-hexagonal cardboard box. ,4.
5 is formed to be swingable.

Additionally, the four flaps that make up the bottom have already been folded in.

The sheath part 1 has liner paper 6 on both sides of a wavy inner core base paper 8.
7 is made up of base paper attached with adhesive.

By the way, the flap parts 2 to 5 (the flap part of the bottom plate also has substantially the same structure) are made of a base paper in which a liner paper 9 is pasted only on the front side of an inner core base paper 8.

Since the wavy inner core base paper 8 is layered along the upper edge of the box body 1, the refractive power of the flap parts 2 to 5 is extremely strong, and its strength is perfectly maintained.

Note that the upper or lower side of the liner paper 7 attached to the inner surface of the sheath 1 is the boundary between this flap and the sheath because the flaps 2 to 5 (and the bottom flap) swing. It is desirable to cover the folding hinge part in order to improve the strength of this hinge part.

Next, we will explain the process of storing and packing items in cardboard boxes.

After storing an item in the sheath part 1 in which the bottom flap part is folded in in advance, the flap parts 3 and 5 in symmetrical positions are first inserted.
is folded into the upper surface of the sheath portion (as shown), and adhesive is applied to the upper surface of the liner paper 9 of this flap portion.

Then, the remaining flap parts 2 and 4 are folded in and joined to the upper surfaces of the flap parts 3 and 5 that were previously folded in, and are pressed and bonded.

In this state, the liner paper 9 of the flap parts 3, 5 and the corrugated inner core base paper 8 of the flap part 2.4 are adhered to each other.

This makes opening the cardboard box easier.

It also means that the liner paper 6.9, which is more expensive than the inner core base paper 8, can be saved by about a quarter compared to conventional corrugated paper.

Even if the liner is not glued to the inner surfaces of the flaps 2 to 5, the flaps are all polymerized and used, so there is no problem with the strength of the box itself.

As mentioned above, the strength of the cardboard box according to the present invention is sufficient, so there is no need to worry about the cargo collapsing even when stacked, and the refraction resistance of the flap part itself is perfect, making it inexpensive and easy to open. The practical effect is extremely large.

[Brief explanation of drawings]

The drawing is a perspective view showing an embodiment of the present invention. 1...Box body, 2-5...Flap part,
8... Inner core base paper.

Claims (1)

[Scope of utility model registration request] The sheath, which constitutes the four walls of the right-angled hexahedral cardboard box excluding the top and bottom, is made of base paper with liner paper pasted on both sides of a corrugated inner core base paper, and the sheath is made of base paper with liner paper attached to both sides of the corrugated inner core base paper. A rectangular fluff part is formed on each side of the edge so as to be swingable, and the flap part has a liner attached only to the outer surface of the wavy inner core base paper layered along the upper and lower edges of the sheath part. A cardboard box characterized by being made of base paper with paper pasted on it.