JP2020164182A - Paper container - Google Patents

Abstract

To provide a paper container easily foldable flat, having an apex with an inclined top face.SOLUTION: In a paper container having an apex with an inclined top face, body part right and left side face panels are provided with first inclined folding lines 40, 41 for folding, forming triangles A formed in side face panels 17, 18 and point-symmetry triangles C with middle points M of second apex lateral folding lines 15, 16 as symmetrical centers, and second inclined folding lines 42, 43 for folding, forming triangles B formed in inside bottom face panels 26, 27 and line-symmetry triangles D with second bottom part lateral folding lines 24, 25 as symmetry axes. The body panels are provided with body part vertical folding lines 44, 45 connecting apexes P3 of the triangles C with apexes P4 of the triangles D, a first lateral folding line 46 for folding, for connecting the apexes P3 of the triangles C with each other and a second lateral folding line 47 for folding, for connecting the apexes P4 of the triangles D with each other.SELECTED DRAWING: Figure 2

Description

The present invention has a flat-top top that accommodates liquid beverages such as milk and juice, liquid detergents, viscous substances such as jellies and creams, and liquid beverages such as liquid beverages mixed with solid foods such as fruit pieces. Regarding paper containers.

Paper containers are widely used as containers for containing liquid beverages such as milk and juice, liquid detergents, viscous substances such as jellies and creams, and liquid beverages mixed with solid foods such as fruit pieces. There is. When disposing of such a paper container after consuming the contents, it is desirable to fold and dispose of it so as not to be bulky as much as possible.

Conventionally, as a paper container that can be folded flat, in a gable-shaped or square liquid paper container having a flat top, in addition to the ruled lines for forming the container, on the left and right of the side wall of the front of the container. Two ruled lines that intersect diagonally toward the center of the side wall are provided on each of the two side walls in an isosceles triangle shape with the four ridges connecting the left and right corners at the top and bottom as the base. , One vertical ruled line on each of the left and right side walls, and a horizontal ruled line straddling either the front side wall or the back side wall, connecting the four intersections formed by these diagonal ruled lines. A liquid paper container characterized by the present provision is known (see, for example, Patent Document 1).
In each of the gable-shaped or square liquid paper containers having a flat top described in Patent Document 1, since the side wall portion of the container is rectangular, the ridge line connecting the left and right corners at the upper end and the lower end thereof. The apex of the isosceles triangle with the base, that is, the intersection of the two ruled lines diagonally intersecting toward the center of the side wall is located at the center of the side wall.
As a result, the vertical ruled line connecting the vertices of the isosceles triangle on the upper end side and the lower end side (the intersection of the two ruled lines) is provided in the center of the side wall portion in the width direction and parallel to the side side of the side wall portion. By pressing the side wall portion on the front surface, the side wall portions on the left and right sides are folded from the vertical ruled lines provided on the side wall portion, and the side wall portion on the front surface of the container and the side wall portion on the back surface of the container overlap to enable folding. ..

Square root extraction 6-76027

In recent years, a paper container having a flat top type top surface in which the top surface of the top surface is an inclined surface whose front side is low and the back side is high is high from a design point of view has appeared. However, even if the technique described in Patent Document 1 is applied in order to fold a paper container having such a top surface as an inclined surface, it is similar to the liquid paper container described in Patent Document 1. Cannot be folded flat.
This is because, in a paper container having a top having an inclined top surface, the ridge line connecting the left and right corners at the upper ends of the two side wall portions on the left and right of the side wall portion on the front surface of the container is inclined, so this ridge line is used as the bottom. When a ruled line inclined in an isosceles triangle shape is provided on the side wall portion, the intersection of the ruled lines is located near the back surface side of the side wall portion.

Therefore, the intersection of the ruled lines that slope toward the center of the side wall in an isosceles triangle shape with the ridge line connecting the left and right corners at the lower ends of the two side walls on the left and right of the side wall on the front of the container as the base and the front of the container. The vertical ruled line connecting the intersection of the isosceles right triangle-shaped sloping ruled lines with the ridge line connecting the left and right corners at the upper ends of the two side wall parts on the left and right sides of the side wall is the vertical between the side walls of the container. It is not parallel to the ruled line. Therefore, even if the side wall portion on the front surface of the container is pressed and the vertical ruled line connecting the two upper and lower side wall portions provided on the left and right sides of the side wall portion on the front surface of the container is broken, the side wall portion on the front surface of the container and the container are broken. The side walls on the back do not overlap and cannot be folded flat.

An object of the present invention is to provide a paper container having a top surface with an inclined surface, which can be easily folded flat at the time of disposal.

In order to achieve the above object, the invention according to claim 1 is a body front panel, a body left and right side panels, and a body connected via a body vertical folding line where a square body is formed. A pair of top panels having a back panel and connecting to the front panel of the body and the back panel of the body forming the top via a first top horizontal folding line, and the left and right side panels of the body. It has a pair of side panels that are connected via a second top horizontal fold line, and a pair of outer surfaces that are connected to the body front panel and the body back panel where the bottom is formed via the first bottom horizontal fold line. It has a bottom panel and a pair of inner bottom panels that are connected to the left and right side panels of the body portion via a second bottom horizontal folding line, and the pair of side panels constituting the top have the second top horizontal folding line at the bottom. A top inclined polygonal line composed of two diagonal lines forming a triangle having the center of the tip of the side panel in the width direction as an apex is provided, and the pair of inner bottom panels constituting the bottom are lateral to the second bottom. A bottom inclined fold line consisting of two diagonal lines forming a triangle having the fold line as the bottom and the center in the width direction near the tip of the inner bottom panel as the apex is provided, and the top is low on the front panel side of the body and the back of the body. In a paper container having a high inclined surface on the panel side, the left and right side panels of the body portion have a triangle formed on the pair of side panels and the second top horizontal folding line with the second top horizontal folding line as the base. A first folding inclined line consisting of two diagonal lines forming a point-symmetrical triangle with the center point as the center of symmetry is provided, and a triangle formed on the pair of inner bottom panels with the second bottom horizontal folding line as the base. A second folding body inclined folding line is provided, which is composed of two diagonal lines forming a line-symmetrical triangle with the second bottom horizontal folding line as the axis of symmetry. Further, the body left and right side panels are provided with the second top. A folding vertical fold line connecting the apex of the triangle having the horizontal fold line as the base and the apex of the triangle having the second bottom horizontal fold line as the base is provided, and between the body left and right side panels and the body left and right side panels. The front panel of the body or the back panel of the body connected to the body is connected to the apex of a triangle formed on the left and right side panels of the body with the second top horizontal folding line as the base, or the lower vicinity of the apex. A first folding horizontal folding line is provided, and a second folding horizontal folding line is provided by connecting the apex of the triangle formed on the left and right side panels of the body portion or the upper vicinity of the apex with the second bottom horizontal folding line as the base. It is characterized by that.

According to the invention of claim 1, the body portion left and right side panel has a triangle formed on the pair of side panels with the second top horizontal folding line as the base, and a midpoint between the second top horizontal folding line. Since the first folding inclined line consisting of two diagonal lines forming a point-symmetrical triangle with the center of symmetry is provided, the apex of the triangle formed by the second top horizontal folding line and the first folding inclined line is With the second top horizontal folding line as the base, the second top panel is located on a line hanging from the apex of the triangle formed on the pair of side panels, that is, at the center of the left and right side panels of the body in the lateral width direction. On the left and right side panels of the body connecting the apex of the triangle formed by the two top horizontal fold lines and the first fold inclined fold line and the apex of the triangle formed by the second bottom horizontal fold line and the second fold inclined fold line. The provided vertical folding line for folding is parallel to the vertical folding line between the front panel of the body, the left and right side panels of the body, and the back panel of the body at the center in the width direction of the left and right side panels of the body. ..
As a result, by pressing the body front panel, the body side panel is mountain-folded from the folding vertical folding line provided on the body side panel, and the body front panel and the body back surface are folded. The panels overlap easily and comfortably.
From this state, the first folding horizontal fold line connecting the vertices of the triangle formed on the left and right side panels of the body with the second top horizontal fold line as the base or the lower neighbors of the vertices is valley-folded. The folding inclined fold line is mountain-folded and overlaps the body front panel and the body back panel in a state where the vertices overlap, and is formed on the body left and right side panels with the second bottom horizontal fold line as the bottom. By valley-folding the apex of the triangular triangle or the second folding horizontal fold line connecting the upper neighbors of the apex, the second folding inclined fold line is mountain-folded, and the front of the body is in a state where the bottoms overlap. Since it overlaps the panel and the back panel of the body, the whole can be folded flat.

As described above, according to the paper container according to the present invention, even a paper container having a top surface with an inclined surface can be easily folded flat and the disposal work can be easily performed.

It is a perspective view which shows this example of embodiment of the paper container which concerns on this invention. It is a development view of the carton blanks for molding the paper container shown in FIG. It is a top view which shows the state which the paper container shown in FIG. 1 is folded.

Hereinafter, an example of the embodiment of the paper container according to the present invention will be described in detail with reference to the drawings.
1 to 3 show an example of an embodiment of the paper container according to the present invention, FIG. 1 is a perspective view of the paper container of this example, and FIG. 2 is a carton blank for molding the paper container shown in FIG. 3 is a plan view showing a folded state of the paper container shown in FIG. 1.

The paper container of this example is a paper container having a square body portion 1 and a top portion 2 having an inclined top surface, and is formed from the carton blanks 3 shown in FIG.
The carton blanks 3 are the body front panel 7, the body left and right side panels 8, 9 and the body back panel 10 which are connected to each other via the body vertical folding lines 4, 5 and 6 where the square body 1 is formed. A pair of top panels 13 and 14 that are connected to the body front panel 7 and the body back panel 10 that form the top 2 via the first top cross-folding lines 11 and 12, and the body. The left and right side panels 8 and 9 have a pair of side panels 17 and 18 connected to each other via the second top horizontal folding lines 15 and 16, and the body front panel 7 and the body where the bottom 19 is formed. A pair of outer bottom panels 22 and 23 connected to the back panel 10 via the first bottom horizontal folding lines 20 and 21, and a pair connected to the body left and right side panels 8 and 9 via the second bottom horizontal folding lines 24 and 25. It has inner bottom panels 26, 27 of.

The outer top seal panels 28 and 29 are connected to the tips of the top panels 13 and 14, and the inner top seal panels 30 and 31 are connected to the tips of the side panels 17 and 18. Further, seal portions 32, 33, 34, 35 are set at the tips of the outer bottom panels 22, 23 and the tips of the inner bottom panels 26, 27.

In the body front panel 7 and the body back panel 10 forming the body 1, the body front panel 7 is formed to be lower in height from the bottom 19 than the body back panel 10, and the body is formed. The second top horizontal folding lines 15 and 16, which are the upper ends of the left and right side panels 8 and 9 of the body, which are connected between the front panel 7 and the back panel 10 of the body, are inclined lines with the front panel 7 side of the body lowered. ing.

The pair of side panels 17 and 18 constituting the top 2 form a triangle A having the second top horizontal folding lines 15 and 16 as the base and the center of the tips of the pair of side panels 17 and 18 in the width direction as the apex P1. Top inclined polygonal lines 36 and 37 composed of two diagonal lines are provided. The top inclined folding lines 36 and 37 are mountain-folded to fold the pair of side panels 17 and 18 to form the flat top 2 of the paper container 1. Since the second top horizontal folding lines 15 and 16 are sloped lines with the body front panel 7 side lowered, the top inclined folding lines 36 and 37 are among the two diagonal lines constituting the second top horizontal folding lines 15 and 16. , The diagonal lines connecting to the ends of the second top horizontal folding lines 15 and 16 on the body front panel 7 side are longer than the diagonal lines connecting to the ends on the body back side panel 10 side, and the inclination angles are respectively. Is different.

The pair of inner bottom panels 26, 27 constituting the bottom 19 has a triangle having the second bottom horizontal folding lines 24, 25 as the base and the center of the pair of inner bottom panels near the tips of 26, 27 in the width direction as the apex P2. Bottom inclined folding lines 38 and 39 composed of two diagonal lines forming B are provided.
Here, the vicinity of the tips of the pair of inner bottom panels 26 and 27 is connected to the body front panel 7 and the body back panel 10 where the bottom 19 is formed via the first bottom horizontal folding lines 20 and 21. It refers to the boundary line with the seal portions 34, 35 set at the tips of the pair of inner bottom panels 26, 27.

The left and right side panels 8 and 9 of the body are provided with triangles A formed on the pair of side panels 17 and 18 and a midpoint M of the second top horizontal folding lines 15 and 16 with the second top horizontal folding lines 15 and 16 as the base. First folding inclined lines 40 and 41 composed of two diagonal lines forming a point-symmetric triangle C as a center of symmetry are provided. That is, the diagonal line on the body front panel 7 side of the two diagonal lines constituting the first folding inclined folding lines 40 and 41 is the back of the body of the two diagonal lines forming the top inclined folding lines 36 and 37. The length and inclination angle are the same as the diagonal line on the panel 10 side, and the diagonal line on the body back panel 10 side of the two diagonal lines constituting the first folding inclined folding lines 40 and 41 is the top inclined folding lines 36 and 37. Of the two diagonal lines constituting the above, the diagonal line on the body front panel 7 side has the same length and inclination angle. As a result, the apex P3 of the triangle C having the second top horizontal fold lines 15 and 16 as the base, which is the intersection of the two diagonal lines forming the first fold slope lines 40 and 41, is the second top horizontal fold line. It is the center position in the width direction of the left and right side panels 8 and 9 of the body hanging from the apex P1 of the triangle A having the bases 15 and 16.

Further, on the left and right side panels 8 and 9 of the body portion, the triangles B formed on the pair of inner bottom panels 26 and 27 and the second bottom horizontal folding lines 24 and 25 are symmetrical with the second bottom horizontal folding lines 24 and 25 as the base. A second folding inclined line 42, 43 composed of two diagonal lines forming a line-symmetrical triangle D as an axis is provided. At this time, the apex P4 of the triangle D having the second bottom horizontal folding lines 24 and 25 as the base is the central position in the horizontal width direction of the left and right side panels 8 and 9 of the body.

Further, on the left and right side panels 8 and 9 of the body, the vertices P3 of the triangle C having the second top horizontal fold lines 15 and 16 as the base and the vertices P4 of the triangle D having the second bottom horizontal fold lines 24 and 25 as the base are provided. Vertical folding lines 44 and 45 for connecting are provided.

Further, the body front panel 7 connected between the body left and right side panels 8 and 9 and the body left and right side panels 8 and 9 has the body left and right side surfaces with the second top horizontal folding lines 15 and 16 as the base. A first folding horizontal folding line 46 connecting the vertices P3 of the triangles C formed on the panels 8 and 9 is provided, and the second bottom horizontal folding lines 24 and 25 are used as the bases of the left and right side panels 8 of the body. A second folding horizontal folding line 47 connecting the vertices P4 of the triangle D formed in 9 is provided.
In this example, the first folding horizontal folding line 46 and the second folding horizontal folding line 47 are formed so as to pass through the body front panel 7, but are formed so as to pass through the body back panel 10. You can also do it.

Further, in this example, the first folding horizontal folding line 46 is formed by connecting the vertices P3, and the second folding horizontal folding line 47 is formed by connecting the vertices P4, but the first folding horizontal folding line 46 is formed. Is formed by connecting the lower neighborhoods of the apex P3, and the second folding horizontal folding line 47 is formed by connecting the upper neighborhoods of the apex P4, the same effect as in this example can be obtained.
Here, the vicinity means a position separated from the apex P3 or P4 by about the thickness of the carton blanks, and for example, connects the positions where the first folding horizontal folding line 46 hangs down from the apex P3 by about the thickness of the carton blanks. It is also possible to form the second folding horizontal folding line 46 by connecting the positions separated from the apex P4 in the vertical direction by about the thickness of the carton blanks.

Further, the top panel 13 that is connected to the body front panel 7 via the first top horizontal folding line 11 is a surface to which the spout 48 is adhered, and an opening 49 that communicates with the spout 48 is formed. There is.

The carton blanks 3 having such a developing structure form a paper container 1 having a square body 1 and a top 2 having an inclined surface whose top surface is low on the body front panel 7 side and high on the body back panel 10 side. (See Fig. 1).

According to the paper container configured in this way, the left and right side panels 8 and 9 of the body portion of the side panels 15 having the second top horizontal folding lines 15 and 16 formed on the pair of side panels 17 and 18 as the base. The first folding inclined line 40 consisting of a triangle A having the apex P1 at the center of the tip of 16 and two diagonal lines forming a point-symmetrical triangle C with the midpoint M of the second apex 15 and 16 as the center of symmetry. , 41 are provided, so that the apex P3 of the triangle C is located on the line hanging from the apex P1 of the triangle A, that is, at the center of the left and right side panels 8 and 9 of the body in the lateral width direction.

Therefore, the apex P3 of the triangle C formed by the second top horizontal folding lines 15 and 16 and the first folding inclined lines 40 and 41, the second bottom horizontal folding lines 24 and 25 and the second folding inclined lines 42 which are the bases. The folding vertical folding lines 44, 45 provided on the left and right side panels 8 and 9 of the body connecting the vertices P4 of the triangle D formed by the bodies 43 are located at the center of the left and right side panels 8 and 9 of the body in the width direction. It is parallel to the body vertical folding lines 4, 5 and 6 between the front panel 7, the left and right side panels 8 and 9 of the body, and the back panel 10 of the body (see FIGS. 1 and 2).

As a result, by pressing the body front panel 7, the folding vertical folding lines 44 and 45 provided on the body side panels 8 and 9 are mountain-folded, and the body front panel 7 and the body back panel 10 are unreasonable. It easily overlaps without.

From this state, the first folding horizontal folding line 46 connecting the vertices P3 of the triangles C formed on the left and right side panel 8 and 9 of the body with the second top horizontal folding lines 15 and 16 as the base is valley-folded. The first folding inclined folding lines 40 and 41 are mountain-folded and overlap with the body front panel 7 and the body back panel 10 in a state where the tops 2 overlap.

Then, the second folding horizontal folding line 47 connecting the vertices P4 of the triangles D formed on the left and right side panels 8 and 9 of the body with the second bottom horizontal folding lines 24 and 25 as the base is valley-folded. The folding inclined folding lines 42 and 43 are mountain-folded and overlap the body front panel 7 and the body back panel 10 in a state where the bottom 19 is overlapped. As a result, the entire paper container can be folded flat (see FIG. 3).

1 Body 2 Top 3 Carton blanks 4, 5, 6 Body vertical folding line 7 Body front panel 8 Body left side panel 9 Body right side panel 10 Body back panel 11, 12 First top horizontal folding line 13, 14 Top panel 15, 16 Second top horizontal fold line 17, 18 Side panel 19 Bottom 20, 21 First bottom horizontal fold line 22, 23 Outer bottom panel 24, 25 Second bottom horizontal fold line 26, 27 Inner bottom panel 28, 29 Outside Top seal panel 30, 31 Inner top seal panel 32, 33, 34, 35 Seal part 36, 37 Top inclined fold line 38, 39 Bottom inclined fold line 40, 41 First fold inclined fold line 42, 43 Second fold inclined fold line 44 , 45 Vertical folding line for folding 46 Horizontal folding line for first folding 47 Horizontal folding line for second folding 48 Mouthpiece 49 Openings A, B, C, D Triangles P1, P2, P3, P4 Pole M Midpoint

Claims (1)

The front surface of the body, which has a front panel of the body, left and right side panels of the body, and a back panel of the body, which are connected via a vertical folding line of the body forming a square body, and forms a top. It has a pair of top panels that are connected to the panel and the back panel of the body via a first top cross-fold line, and a pair of side panels that are connected to the left and right side panels of the body via a second top cross-fold line. A pair of outer bottom panels that are connected to the body front panel and the body back panel that form the bottom via a first bottom horizontal fold line, and the body left and right side panels via a second bottom horizontal fold line. It has a pair of inner bottom panels that are connected to each other, and the pair of side panels constituting the top form a triangle having the second top horizontal folding line as the bottom and the center of the tip of the side panel in the width direction as the apex. A top inclined fold line composed of two diagonal lines is provided, and the pair of inner bottom panels constituting the bottom has the second bottom horizontal fold line as the bottom and the center in the width direction near the tip of the inner bottom panel as the apex. In a paper container in which a bottom inclined polygonal line consisting of two diagonal lines forming a triangle is provided, and the top of the paper container has an inclined surface in which the front panel side of the body is low and the back panel side of the body is high.
The left and right side panels of the body form a point-symmetric triangle with the second top cross-folding line as the base and the triangle formed on the pair of side panels and the midpoint of the second top cross-folding line as the center of symmetry. A first folding inclined line composed of two diagonal lines is provided, and the triangle formed on the pair of inner bottom panels and the second bottom horizontal folding line are line-symmetrical with the second bottom horizontal folding line as the base. A second inclined folding line composed of two diagonal lines forming the triangle is provided, and further, the left and right side panel of the body portion has a triangular apex having the second top horizontal folding line as the base and the second bottom portion. A vertical folding line for folding is provided to connect the vertices of a triangle whose base is a horizontal folding line, and the front panel of the body or the back surface of the body is connected between the left and right side panels of the body and the left and right side panels of the body. The panel is provided with a first folding horizontal fold line connecting the apex of a triangle formed on the left and right side panel of the body with the second top horizontal fold line as the base or the lower vicinity of the apex, and the second bottom lateral fold line. A paper container characterized in that a second folding horizontal fold line is provided which connects the apex of a triangle formed on the left and right side panels of the body with the fold line as the base or the upper vicinity of the apex.

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