JPH041053Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a container for liquids such as milk, juice, etc. Container for liquids whose contents are liquids.

(Prior Art) In a conventional liquid container formed into a rectangular tube shape using paperboard coated with a thermoplastic resin, if the top portion is formed into a gable shape, for example, it is impossible to stack the containers. Further, even if the top portion is formed into a planar shape as shown in the first figure, the edges of the overlapping flaps constituting the top portion form a step 20 in the center. Moreover, since the level difference occurs linearly in the longitudinal direction, it becomes a major obstacle in stacking containers in a stable state. In addition, in order to form the top part into a flat shape, the ears 21 protruding outward from the container are bent to the side of the container and sealed.
This caused inconveniences such as collisions with each other, making it impossible to display them in an orderly manner, and even causing trouble when sold through vending machines.

(Problem to be solved by the present invention) The purpose of the present invention is to ensure that the surface of the top of the liquid container is flat and that the weight portion is not unevenly distributed, thereby enabling stable stacking and orderly display. The purpose of this invention is to provide a container for liquids with a

(Means for Solving the Problem) In order to solve this problem, side plates 1, 2, 3, and 4 are formed continuously in the horizontal direction via vertical folds 10 from paperboard coated with a thermoplastic resin; Horizontal fold 1
1 has an inner flap 5 and an outer flap 6 for a top configuration formed above the side plate, and the lateral length of the inner flap is longer than the lateral length of the outer flap, and In a rectangular cylindrical liquid container with a flat bottom, one inner flap 5a has a longitudinal fold 1
In addition to providing an inclined fold 12 of an isosceles right triangle whose base is the horizontal fold 11 located at 0,10,
A quadrilateral folded portion A formed by cutting out the top of the triangle formed by this inclined line into a rectangular shape by a straight line parallel to the horizontal fold 11 and two perpendicular lines;
B and C, and the other inner flap 5b has a triangular fold D formed by an inclined fold 12 in the form of an isosceles right triangle with the horizontal fold 11 located between the longitudinal folds 10 and 10 as the base. . A pair of rectangular outer flaps 6 whose apex portions d are superimposed above the central quadrilateral folded portion A, and whose height is approximately half the lateral length of the inner flaps.
are folded above the inner flap so that the upper edges 8 of the outer flap are adjacent to each other,
It is heat sealed.

(Example) Examples of the liquid container according to the present invention will be described below based on the attached drawings.

FIG. 3 is a developed view of the inside of a liquid container containing milk or juice according to the present invention.

That is, the side plates 1, 2, 3, and 4 are formed of paperboard coated with a thermoplastic resin so as to be continuous in the lateral direction with longitudinal folds 10 interposed therebetween. A pair of inner flaps 5 and a pair of outer flaps 6 are formed above the side plates 1, 2, 3, and 4 through substantially horizontal horizontal folds 11. configured. A joining flap 7 is formed on the side of the side plate 4 and the inner flap 5 via a longitudinal fold 10.

Note that the horizontal fold 11 is formed almost "almost horizontally" in addition to the case where the horizontal fold is formed horizontally (not shown), as shown in the third diagram, the thickness of the paper This includes both cases in which each horizontal fold forming the horizontal fold 11 is slightly shifted in the vertical direction in consideration of ease of folding and the like.

The lateral length of the inner flap 5 is greater than the lateral length of the outer flap 6, so that the transverse shape of the container is rectangular and the bottom of the container is planar. As for the structure of this bottom part, any of various conventional planar bottom structures may be adopted.

In such a liquid container, one inner flap 5a is provided with an inclined fold 12 in the form of an isosceles right triangle whose base is the horizontal fold 11 located between the longitudinal folds 10, 10, It has quadrilateral folded parts A, B, and C formed by cutting out the top of the formed triangle into a rectangular shape by a straight line parallel to the horizontal fold line 11 and two perpendicular lines. That is, two quadrilateral folds B and C are symmetrically formed on both sides of a trapezoidal quadrilateral fold A at the center with an inclined fold 12 interposed therebetween.

In addition, the other inner flap 5b has a vertical fold 1
Three triangular folds D, E, and F are formed by inclined folds 12 in the form of an isosceles right triangle with the horizontal fold 11 located between 0 and 10 as the base.

Then, the quadrilateral folds A, B, and C of the one inner flap and the triangular folds D, E, and F of the other inner flap are folded inward, and the apex d of the triangular fold is folded inwards. It is overlapped above the quadrilateral folded part A in the center. In other words, in the triangular folded parts D, E, and F, the apex part d and the adjacent parts on both sides of this apex part are between the central quadrilateral folded part A and the quadrilateral folded parts B and C adjacent on both sides. (See Figures 4 and 5).

In this case, the apex portions d of the triangular folded portions are overlapped over the entire length of the upper edge 13 of the central quadrilateral folded portion A so as to almost completely coincide with each other.

Above the inner flaps 5, 5 folded in this way, a pair of rectangular outer flaps 6 having a height approximately half the lateral length of the inner flaps 5 are arranged.
The upper edges 8 of the outer flaps are folded in adjacent to each other and heat sealed (see FIG. 6).

Since the height m of the rectangular outer flap 6 is approximately half the lateral length n of the inner flap 5, the upper edges 8 of the pair of outer flaps are adjacent to each other without any gap between them. Further, there is no difference in level caused by overlapping.

The drinking spout 9 at the top (with a breakable seal) is formed on the outer flap 6 (a portion composed of one outer flap) that does not overlap the inner flap 5 (see Fig. 7). ).

Since this weight-free area can be kept fairly large, it is easy to form a large drinking spout 9. Therefore, drinking directly from the spout is the so-called ``guinomi.''
This also makes it possible to use straws, eliminating the need for straws.

Looking at how the inner flaps and outer flaps overlap at the top where the surface is formed in a planar shape, as shown in Figure 7, the weight due to the folding of the inner flaps 5, 5 is the weight of a pair of rectangular flaps. It is completely covered by the outer flaps 6,6. Further, the upper edges 8 of the pair of outer flaps are arranged adjacent to each other without creating a step in the center of the top, thereby ensuring the flatness of the top surface.

Furthermore, the weight part between the joining flap 7 and the inner/outer flaps 5 and 6 (i.e. 4 pieces of e and 2 pieces of f)
They are all arranged symmetrically and in the same number with respect to the adjacent line formed by the upper edges 8, 8 of the outer flaps in the center of the top (i.e. 3 pieces for g, 1 piece for h), except for ), the surface irregularities are reduced and the relative planarity of the top surface is maintained.

Although five weights are formed in one portion, this weight portion is only a very small portion of the apex angle portion d, so this does not significantly impair the flatness of the top surface.

In addition, the overall number of flap weights is small, and the area of the five weights is very small, making it easy to form the top by heat sealing.

(Effects) As described above, according to the liquid container according to the present invention, the top surface of the liquid container is formed flat without any step, and the weight part is not unevenly distributed, so that stable stacking is possible. It has excellent effects, such as making it possible to display items in an orderly manner and making it easy to form the top part by heat sealing.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a conventional liquid container with a flat top surface, FIG. 2 is a perspective view of a liquid container according to the present invention, and FIG. 3 is an exploded inner view showing the top of the container. , FIGS. 4 to 6 are perspective views showing the assembly of the top of the container, and FIG. 7 is an outside plan view of the top of the container. 5...Inner flap, 6...Outer flap.

Claims (1)

[Scope of utility model registration request] A side plate formed by paperboard coated with thermoplastic resin in a continuous manner in the transverse direction through longitudinal folds, an inner flap for a top configuration formed above said side plate via the transverse fold, and an outer flap. A rectangular cylindrical liquid container having a flap, the lateral length of the inner flap being longer than the lateral length of the outer flap, and a flat bottom,
One of the inner flaps is provided with an inclined fold 12 in the form of an isosceles right triangle whose base is the horizontal fold 11 located between the longitudinal folds 10, 10, and the top of the triangle formed by this inclined line is Horizontal fold 11
It has quadrilateral folded parts A, B, and C formed by cutting out a rectangular shape by a straight line parallel to and two perpendicular lines,
The other inner flap has triangular folds D, E, and F formed by inclined folds in the form of an isosceles right triangle with the horizontal fold located between the vertical folds as the base,
quadrilateral folded portions A, B of said one inner flap;
C and the triangular folded portion D of the other inner flap,
Fold E and F inward, and overlap the apex part d of the triangular folded part above the central quadrilateral folded part A, so that the height is approximately half of the horizontal length of the inner flap. A liquid container with a flat top surface, characterized in that a pair of rectangular outer flaps are folded above the inner flap, with the upper edges of the outer flaps adjacent to each other, and heat sealed. .