JPS5836665Y2 - Cardboard box with a back liner on the flap - Google Patents

Description

[Detailed explanation of the idea] This proposal concerns a cardboard box that uses cardboard on one side.

The present applicant previously applied for a single-sided cardboard box whose inner surface has a core in order to secure space inside the box and improve air circulation (Utility Application No. 53025650 Cardboard Box, Utility Application No. 53025650). No. 53-026386), this type of single-sided corrugated cardboard box lacks a back liner and has the disadvantage that the box is easily damaged.

Breakage of this type of single-sided corrugated cardboard box occurs when the exposed portion of the core, especially the lower flap on which the stored items are placed, is crushed or the upper flap collapses when a large number of boxes are loaded.

Furthermore, in the case of the cited single-sided corrugated box, there is an aesthetic problem in that when the box is opened, the inner surface of the box, especially the center core of the flap part, is exposed.

Although it is not advisable to attach a back liner to the core in order to eliminate the above-mentioned drawbacks, it is inappropriate to apply a back liner to the entire inner surface of a corrugated cardboard box in light of the purpose of the above-mentioned invention.

The inventor of the present invention has conducted various studies in an attempt to solve the problem of sloping, and has found that if a back liner is bonded to the center core of the flap part of a single-sided corrugated cardboard box at the top of the corrugation, the fragility of the so-called single-sided corrugated cardboard box and the shape of the box after manufacturing can be reduced. We have reached the conclusion that it is possible to create a cardboard box that takes advantage of the advantages of single-sided cardboard while also solving the problem of internal aesthetics.

The content of this proposal will be explained below with reference to the drawings.

FIG. 1 is a partially cutaway developed view of the proposed cardboard box.

The corrugated box of the present invention uses a single-sided corrugated board 12 including multiple single-sided and multiple single-sided corrugated boards, which is made by bonding a front liner 2 to a core 1 and a top liner with an adhesive. A liner 4 is bonded to the top of the step with an adhesive.

The single-sided corrugated board 12 is made using ordinary core base paper and front liner base paper, and in its current form is capable of running inside a corrugator or box making machine while being turned upside down.

Note that the core 1 may be composed of a single core base paper 1a, or it may be a so-called composite core in which two core base papers 1a are bonded together using an adhesive (see FIG. 3B). Alternatively, only the body of the box may be made of a composite core, and the other parts may be constructed using a composite core with a single sheet of core base paper 1a.

Furthermore, the core 1 may be treated with a reinforcing liquid consisting of phenolic resin, paraffin, rosin, or other components to increase the strength of the core. This is a case in which a single-sided corrugated board 12 is used, in which a single front liner 2 is bonded to the corrugated top of a regular core 1 which is not treated with any reinforcing liquid.

Although the back liner 4 may be a commercially available normal back liner base paper, the present invention is not limited thereto, and a more solid paper may also be used.

As mentioned above, the back liner 4 is attached to the core 1 so as to cover the flap part 3 of the corrugated box, but preferably also covers the upper and lower ruled line parts 5, 5, and It reaches the box body 6.

If it is hard, it will be easier to apply the lines to the cardboard during box manufacturing.

In addition, in the present invention, the back liner 4 may be applied to either one of the lower flap portions 3a and 3b, preferably the upper flap portion 3a, but in order to better achieve the purpose of the present invention, Upper, Senryo flap parts 3a, 3b
The back liner 4 should be placed against the back liner 4.

The proposed corrugated box has the above-mentioned structure, and has the advantages of a so-called single-sided corrugated box after being manufactured, namely, sufficient air circulation even when the stored items are inserted into the box, and at least the inner wall of the box body The center core has an uneven shape, which has the advantage of preventing stored items from accidentally moving inside the box.
You can get the following benefits:

(1) Since the flap part of the proposed corrugated box is covered with a back liner, if the box is packed with items and then left behind, the core part will not be exposed, so when opened. It can maintain its aesthetic appearance and is therefore suitable for store display.

(2) This product has a back liner on the flap of single-sided cardboard, and is not a so-called fragile cardboard box, so even if items are stored, the bottom flap may be crushed or dented, or the top flap may collapse. No dents or the like occur.

(3) In the proposed corrugated box, the back liner is placed above the core.
When placed so as to cover the lower ruled line, further reinforcement of the box can be achieved.In addition, when applying the ruled sesame to the corrugated board related to the proposed box, when applying it directly to the uneven core. Compared to the above, the work of adding lines can be done more smoothly and the core will not be damaged during the work.

Therefore, the present invention has great benefits when used in the field of this type of cardboard box, where the demand will increase more and more in the future.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway developed view of the corrugated cardboard box of the present invention, FIG. 2 is a perspective view of the corrugated cardboard box of the present invention, and FIG. 3 is an enlarged side view of the essential parts of the corrugated board used to make the corrugated cardboard box of the present invention. In the figure, 1 is the center core, 2 is the front liner, 3 is the flap part, 4
1 is a back liner, 5 is an upper or lower ruled line portion, and 12 is a single-sided corrugated board.

Claims (1)

[Scope of utility model registration request] A box made of single-sided corrugated cardboard with a front liner glued to the center core, characterized by a back liner glued to the top of the corrugation in the area beyond the upper and lower ruled lines toward the box body and the center core of the flap part. cardboard box.