JPS5917779Y2 - Blistering prevention packaging container - Google Patents

Description

[Detailed description of the invention] This invention relates to a packaging container made of paperboard or the like for storing powdery or granular materials such as detergents, etc. Especially when it is filled with contents and stored, In order to prevent the sides of the container from bulging outward due to the weight of the object (so-called bulging), and to prevent the sides from becoming depressed when the contents decrease. A foldable body frame is attached to the inner surface of all four sides of the container, which improves the strength of the container and prevents the body from bulging without increasing the unit weight of the paperboard material. be.

Conventionally, in this type of packaging container, for example, in the case of a detergent container having a width T, a depth Y, and a height H, there are M size, L size, and LL size depending on the weight of the contents, and the weight of the contents is large. As the size of the container increases, the unit weight of the material must be increased as shown in Table 1, which has the disadvantage that the manufacturing cost is high and the strength is not improved.

The packaging container is made up of side walls 1, 2, 3.4 and glue allowances 5 successively connected to the free ends of the side walls 1 via vertical fold lines. The top part A and the bottom part B are connected to each other through a horizontal fold line, and the side walls 1,
3, and a vertical fold line 11 on both sides thereof.
It has second adhesion parts 8', 8' provided respectively via l3, and the fold line l1 provided approximately at the center of the first adhesion part.
．． A third adhesive part is formed on the second adhesive part 8' side by a U-shaped cut 9 which extends in one direction in either of the second adhesive parts 8' and 8' starting from the vertical fold line 12 having approximately half the length of l3. The body frame 6 having the support plate 7 provided with a diameter of
' to the side walls 2 and 4 of the container body C, the third adhesive part 8'' to either one of the side walls 1 and 3, and the third adhesive part 8'' to the side wall opposite to the third adhesive part 8. It is formed by adhering it to.

However, as a condition in this case, the third attachment part 8 of the support plate 7
It is important that the length X of the portion excluding " is approximately equal to the width y of the side walls 2, 4 (see FIG. 3).

To assemble the container of the present invention, the side walls 1, 2, 3.4 and the glue allowance 5 are bent approximately at right angles along vertical fold lines to form a container body C having a rectangular cross section, and at the same time the support plate 7 of the body frame 6 is Fold it up almost vertically along the fold line 12, and then add the third adhesive part 8''.
is bent along the vertical folding line 11 and pasted and fixed to the side wall opposite to the first pasting part 8 (side wall 1 in FIG. 4), with an adhesive margin of 5.
is attached to the inner surface of the free end portion of the side wall 4, and finally the top section A and the bottom section B are attached.

In this embodiment, the number of body frames 6 is only one, but it goes without saying that two or more frames may be provided depending on the height and size of the container body C to achieve the same or better effect. be.

Further, the height of the barrel frame 6 can be changed as appropriate within the range of 0 from the product H-''H, where H is the height of the container body C.

The adhesive used for the first adhesive part 8 of the body frame 6 may be of an emulsion type or a hot melt type, and the adhesive area may be either the entire surface or a dot array.

Since the present invention has the above-mentioned structure, it is possible to improve the strength of the paperboard, which is the material of the container, without increasing the unit weight, and prevent the body from bulging.
It is excellent in practical use, as it can be made using a sack pasting machine.

Tables 2 and 3 below show comparative examples and differences in effects between the conventional product and the present invention, respectively.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a developed plan view of the container, Fig. 2 is a developed plan view of the body frame, and Fig. 3 shows a part of the body frame attached to the inner surface of the container. FIG. 4 is a developed plan view showing the state; FIG. 4 is a perspective explanatory view showing the assembled state of the present invention; FIG.
The figure is a cross-sectional view of XX' in FIG. 4.

Claims (1)

[Claims for Utility Model Registration] A container consisting of a container body having a rectangular cross section, a top part provided at the upper end of the container body via a horizontal fold line, and a bottom part provided at the lower end of the container body via a horizontal fold line, Among the side walls constituting the main body, at least two side walls have a first adhesive part having an appropriate height and approximately the same height as the inner surface of the side wall, and a second adhesive part provided on both sides of the second adhesive part via vertical fold lines. The body frame has a supporting plate having a third adhesive part at its tip by a U-shaped cut extending from a vertical fold line provided approximately in the center of the first adhesive part to a second adhesive part as a starting point. The present invention was conceived in view of the U-shaped cut and vertical fold lines in the support plate, and will be described in detail below based on embodiments shown in the drawings. As shown in FIG. 1, the first and second adhesive parts are stuck vertically to prevent body bulge according to the present invention, and the second adhesive part is attached to the remaining side wall on the opposite side from the first adhesive part. A packaging container to prevent body bulge, characterized by having three adhesive parts attached.