JP2019167149A - Packaging container - Google Patents

Abstract

To provide a packaging container which has a simple structure with a small number of components and can be manufactured for low cost, and from which the content fluid can be pumped out to the last drop.SOLUTION: A packaging container includes: a box-shaped container body which is made of a sheet material and has a convex polygonal upper surface that is not rectangular, a lower surface that has a similar shape to the upper surface, and multiple side surfaces; and a spout mounted on the center of the upper surface of the container body. Of the container body, the lower surface protrudes in a conical shape toward the lower part of the container body, from each side surface the connection parts to which sheet material is connected in an overlapping state extend out, and by making the connection parts along the side surfaces, at least a part of the connection parts further extends downward than the whole lower surface.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a packaging container.

  In order to take out the content liquid with which the container main body formed in the box shape was taken out, the packaging container which attached the pump dispenser formed using the hard plastic etc. to the upper surface of the container main body is known.

  In Patent Document 1, a gable roof shape (govel top shape) is provided at the bottom of the container body so that the content liquid collected at the bottom of the box-shaped container body can be pumped out to the end by a pump dispenser. In addition, a packaging container (liquid paper container) provided with a bottom stabilizing member to enable the container main body to stand on its own is disclosed.

  According to the packaging container of Patent Document 1, the content liquid remaining at the end inside the packaging container can be stored at the end of the gable roof shape inverted upside down. For this reason, by designing the tip of the tube of the pump dispenser to be located at the tip of the gable roof shape, it is easy to pump the content liquid to the end by the pump dispenser, and the content can be made difficult to remain.

Japanese Patent Laid-Open No. 10-147335

  In order to make the packaging container of patent document 1 self-support, it was necessary to use a bottom part stabilizing member separately from the container body. For this reason, the packaging container of patent document 1 had the problem that a manufacturing process and the number of parts increased, and the manufacturing cost increased. Moreover, in the packaging container of patent document 1, since the content liquid remained linearly along the lowest side of the gable roof shape of a bottom face, there was a limit in pumping to the last.

  The present invention has been made in view of such problems, and provides a packaging container that can be pumped up to the end with a simple structure and a low cost with a small number of parts. For the purpose.

  One aspect of the present invention for solving the above problems is a box-shaped container body formed of a sheet material, which has a convex polygonal upper surface that is not rectangular, a lower surface similar to the upper surface, and a plurality of side surfaces. And a spout attached to the center of the upper surface of the container body, the container body is connected in a state where the lower surface protrudes in a conical shape toward the lower side of the container body and the sheet material overlaps from each side surface. In this case, the connecting part extends and the connecting part extends along the side surface so that at least a part of the connecting part extends below the entire lower surface.

  ADVANTAGE OF THE INVENTION According to this invention, the packaging container which can pump out the content liquid to the last which can be manufactured at low cost with a simple structure with few parts can be provided.

The perspective view of the packaging container which concerns on the 1st Embodiment of this invention Sectional drawing of the packaging container which concerns on the 1st Embodiment of this invention The perspective view of the container main body which concerns on one Embodiment of this invention. The top view of the blank of the container main body which concerns on the 1st Embodiment of this invention The figure which shows the deformation | transformation method of the container main body which concerns on the 1st Embodiment of this invention. Sectional drawing of the packaging container which concerns on the 2nd Embodiment of this invention. Sectional drawing of the folding | turning edge part which concerns on a modification

  A packaging container according to an embodiment of the present invention will be described with reference to the drawings. In each embodiment and modification, the same or corresponding components are denoted by the same reference numerals, and description thereof is omitted. In the following description, for the sake of convenience, the up and down directions with the packaging container upright are referred to as the up and down direction.

<First Embodiment>
FIG. 1 shows a perspective view of a packaging container 300 according to the first embodiment of the present invention, and FIG. 2 shows a cross-sectional view of the packaging container 300 taken along line AA ′. As shown in FIGS. 1 and 2, the packaging container 300 includes a container main body 100 and a pump dispenser 200 attached to the upper surface 110 of the container main body 100 and attached to a spout 190. For convenience, the illustration of the internal structure of the pump dispenser 200 and the folded piece 150 described later in the following cross-sectional views is omitted.

(Pump dispenser)
The pump dispenser 200 is a pump for pumping out the content liquid filled in the container body 100, and includes a pump unit 210, a dispensing nozzle 220, a cap unit 230, and a tube 240.

  The pump dispenser 200 sucks up the content liquid in the container body 100 from the tube 240 by the pump mechanism inside the pump unit 210 by pushing down the upper part (pump head) of the pump unit 210. The sucked content liquid is pumped out of the container body 100 through the pouring nozzle 220. The pump dispenser 200 is fixed by attaching a cap portion 230 to a spout 190 (described later) attached to the container body 100 by screwing or the like.

(Container body)
The container main body 100 is a box-shaped container formed by stacking and sealing the ends of blanks obtained by cutting a sheet material into a predetermined shape. As an example, the container body 100 can be deformed between a box-shaped state and a flat state.

(Box state)
First, the container body 100 in a box shape will be described. As shown in FIGS. 1 and 2, the container body 100 in a box shape includes an upper surface 110 to which a spout 190 is attached, a lower surface 130, and a plurality of side surfaces 120. The upper surface 110, the lower surface 130, and the plurality of side surfaces 120 form a gap (accommodating space).

  A side seal portion 140 and a folded piece 150 are provided along the outer peripheral surface of the side surface 120. The side seal part 140 is along the side surface 120 in a state where the edge is directed to the lower surface 130 side. Although details will be described later, the width of the side seal portion 140 is set to a length such that at least a part of the side seal portion 140 extends below the entire lower surface 130.

  Moreover, the lower surface 130 of the container main body 100 in a box shape is formed in a conical shape protruding downward from the container main body 100 as shown in FIG. The method of forming the lower surface 130 in a conical shape is not particularly limited. For example, embossing that presses the lower surface 130 with a male mold and a female mold, a method of filling the housing space with air after shaping the container body 100, or the like. Can be used.

  By forming the lower surface 130 in a conical shape, the packaging container 300 can store the content liquid remaining in the accommodation space on the top of the lower surface 130 formed in the conical shape, as shown in FIG. For this reason, by setting the position of the spout 190 so that the tube 240 of the pump dispenser 200 is located at the top of the lower surface 130, the content liquid can be pumped out to the end by the pump dispenser 200. In particular, since the content liquid accumulates around the top of the lower surface 130, the remaining amount of the content liquid can be reduced as compared with the gable roof shape that accumulates in a linear shape.

  Thus, in the packaging container 300, the side seal portion 140 extends downward from the entire lower surface 130 to form a support portion. For this reason, even if the lower surface 130 is conical, it can be erected stably. For this reason, in order to erect packaging container 300, it is not necessary to use a member different from container body 100.

  Further, since the lower surface 130 is formed in a conical shape with the central portion protruding downward, the structure of the container body 200 does not become complicated.

  Therefore, according to the present invention, it is possible to provide a packaging container 300 capable of pumping the content liquid to the end and having a simple structure with few parts and low cost.

(Flat state)
Next, the container body 100 in a flat state will be described. FIG. 3 is a perspective view showing a state in which the upper surface 110 of the container body 100 in a flat state is turned upward, and FIG. 4 is a plan view of an example of a blank of the container body 100. In the following description, illustration of the spout 280 is omitted.

  As shown in FIG. 3, the container body 100 in a flat state is constituted by a first portion 170a and a second portion 170b that overlap each other. As shown in FIG. 4, the blank for forming the container main body 100 includes a blank 101a corresponding to the first portion 170a and a blank 101b corresponding to the second portion 170b.

  The first portion 170a includes an upper surface 110, a plurality of upper isosceles trapezoidal surfaces 120a extending from each side of the upper surface 110, and a plurality of upper folded surfaces formed between the adjacent upper isosceles trapezoidal surfaces 120a. 150a, and an upper seal margin 140a that constitutes a peripheral portion of the outer periphery of the first portion 170a along the edge of the upper isosceles trapezoidal surface 120a and the upper folded surface 150a opposite to the upper surface 110. .

  The second portion 170b includes a lower surface 130, a plurality of lower isosceles trapezoidal surfaces 120b extending from each side of the lower surface 130, and a plurality of lower surfaces formed between adjacent lower isosceles trapezoidal surfaces 120b. A lower side that constitutes a peripheral portion over the entire circumference of the outer edge of the second portion 170b along the side folding surface 150b, the lower isosceles trapezoidal surface 120b, and the edge of the lower folding surface 150b opposite to the lower surface 130 And a seal margin 140b.

  The upper surface 110 and the lower surface 130 are convex polygonal surfaces. In the container body 100, as an example, the upper surface 110 and the lower surface 130 have a regular triangular shape, and the upper surface 110 and the lower surface 130 are formed in the same area. The shape of the upper surface 110 and the lower surface 130 is not limited as long as it is a convex polygonal shape that is not a rectangle, and the lower surface 130 is not limited as long as the shape is similar to the upper surface 110. By making the upper surface 110 and the lower surface 130 into convex polygonal shapes that are not rectangular, various shapes can be adopted for the upper surface 110 and the lower surface 130, and therefore, the packaging container 300 having a highly designable shape can be provided. . An opening 111 for attaching the spout 280 is formed on the upper surface 110.

  The plurality of upper isosceles trapezoidal surfaces 120a and the plurality of lower isosceles trapezoidal surfaces 120b are isosceles trapezoidal surfaces constituting the side surface 120 of the container main body 100 in a box shape. In the container body 100, as an example, the upper isosceles trapezoid surface 120a and the lower isosceles trapezoid surface 120b are rectangular.

  The upper folded surface 150a and the lower folded surface 150b are surfaces constituting the folded piece 150 of the container body 100 in a box shape, and are folded in the process of deformation described later.

  In order to facilitate folding in the process of deformation, the upper folded surface 150a and the lower folded surface 150b are formed from the first vertex 170a and the first portion from the vertices of the upper surface 110 and the lower surface 130 as shown by dotted lines in FIG. You may provide the folding ruled line 151 extended toward the peripheral part of the 2 part 170b.

  The upper seal margin 140a and the lower seal margin 140b are band-like surfaces provided to connect the first portion 170a and the second portion 170b at the peripheral edge. When connecting the first portion 170a and the second portion 170b, the first portion 170a and the second portion 170b are overlapped with each other so that the upper seal margin 140a and the lower seal margin 140b are opposed to each other. A side seal portion 140 is formed as a connection portion in which the surfaces to be sealed are mutually sealed and bonded. The shapes of the upper seal margin 140a and the lower seal margin 140b may be arbitrarily set as long as they overlap each other in order to form the side seal portion 140 by being overlapped.

  The width of the side seal portion 140, that is, the width of the upper seal margin 140a and the lower seal margin 140b is such that at least a part of the side seal portion 140 is the lower surface 130 when the container body 100 is in a box shape as described above. It is set to a length that extends downward from the entire surface. Specifically, as shown in FIG. 4, the width L1 is lower in the region facing at least the upper isosceles trapezoid surface 120a and the lower isosceles trapezoid surface 120b in each of the upper seal margin 140a and the lower seal margin 140b. It is set to be longer than the length L2 in the vertical direction when the container body 100 of the side isosceles trapezoidal surface 120b is in a box shape.

  If the width in the longitudinal direction of the side seal portion 140, that is, the width in the longitudinal direction of the upper seal margin 140a and the lower seal margin 140b can be connected to the first portion 170a and the second portion 170b, FIG. As shown, it may not be constant, it may be constant, and the edge may not be linear.

  Edge protection processing may be performed on the edge of the side seal portion 140 on the peripheral edge side by skive hemming, edge protection tape, or the like. By forming the end edge of the side seal part 140 in this way, moisture is prevented from entering the inside of the sheet material or the interface of the sealed sheet material from the end edge of the side seal part 140, and mold is generated. Or a decrease in the strength of the sheet material can be suppressed.

  The region for sealing the upper seal allowance 140a and the lower seal allowance 140b can be a belt-like region having a predetermined width, as shown by hatching in FIG. The container body 100 formed in this way has a sealing property except for the opening 111.

  The blanks 101a and 101b can be formed, for example, by cutting a sheet material into a predetermined shape and partitioning the areas constituting each surface by providing ruled lines as shown by thin lines and dotted lines in FIG.

  Although it does not specifically limit as a sheet | seat material used for blank 101a, 101b, For example, the laminated | multilayer film which laminated | stacked the thermoplastic resin layer and the sealant layer on the paper base material layer can be used suitably. In addition to this, a barrier layer, a functional film, or the like may be appropriately added according to a required function.

(Deformation method)
Next, an example of a method for transforming a container body in a flat state into a box shape will be described using the container body 100. FIGS. 5A to 5D are views for explaining an example of a deformation method of the container body 100. FIG.

  First, as shown in FIG. 5 (a), the first portion 170a and the second portion 170b of the container body 100 in a flat state are placed at the peripheral portion (specifically, the side seal portion 140 and the upper side, etc. The first portion 170a and the second portion 170b are separated by bending (along the ruled line between the leg trapezoid surface 120a and the lower isosceles trapezoid surface 120b). Thereby, while forming a space | gap between the 1st part 170a and the 2nd part 170b, the upper surface 110, the lower surface 130, and the side surface 120 are formed. At the same time, the sides of the upper folded surface 150a and the lower folded surface 150b that are shared by the adjacent upper isosceles trapezoid surface 120a and lower isosceles trapezoid surface 120b approach each other. As a result, the upper folded surface 150a and the lower folded surface 150b are folded so that the folded ruled line 151 is directed outward from the gap, thereby forming folded pieces 150.

  Next, as shown in FIG. 5B, the side seal portion 140 is placed along the side surface 120 so that the end edge faces the lower surface 110 side.

  Next, as shown in FIG. 5C, the folded piece 150 is placed along the outer peripheral surface of the side surface 120. The direction in which the folded pieces 150 are arranged is not limited, and as shown in FIG. 5C, the plurality of folded pieces 150 may be arranged along the circumferential direction of the side surface 120 in the same direction, Each folded piece 150 may be along different directions.

  At this time, the folded piece 150 may be attached to the surface of the side surface 120. Examples of a method for attaching the folded piece 150 to the side surface 120 include a method using a heat seal, a hot melt adhesive, or the like. In addition, since the container body 100 deformed from a box-shaped state to a flat state can be used again as a box-shaped state by being attached with a detachable joining member such as a hook-and-loop fastener, a snap button, etc. The container main body 100 in a proper state can be reused.

  By the above procedure, as shown in FIG. 5D, the container body 100 that has been in a flat state can be transformed into a box-like state.

  The container body 100 in a box shape can be brought into a flat state by a procedure opposite to that described above.

  Specifically, first, the folded piece 150 of the container body 100 in a box shape is detached from the side surface 120.

  Next, the first portion 170a and the second portion 170b are extended at the peripheral portion (specifically, along the ruled line between the side seal portion 140 and the side surface 120).

  Next, the gap between the first portion 170a and the second portion 170b is eliminated, and the container body 100 is deformed into a flat state by overlapping the first portion 170a and the second portion 170b. can do.

<Second Embodiment>
In FIG. 6, sectional drawing of the packaging container 301 which concerns on the 2nd Embodiment of this invention is shown. As shown in FIG. 6, the packaging container 301 includes a container main body 400 and a pump dispenser 200 attached to the upper surface 110 of the container main body 400.

  The difference between the container main body 100 and the container main body 400 is the shape of the tip of the side seal portion 140. As shown in FIG. 6, the side seal part 140 of the container body 400 has a folded end 490 formed by folding the sheet material included in the side seal part 140 upward below the entire lower surface 130. Is provided.

  Since the packaging container 301 includes the folded end portion 490, the edge of the side seal portion 140 is not directly grounded. As a result, even when the packaging container 301 is left in a bathroom or the like where the installation surface is often wet, moisture from the edge of the side seal portion 240 to the inside of the sheet material or the interface of the sealed sheet material. By entering, it can suppress that mold | fungi generate | occur | produce and the intensity | strength of a sheet | seat material falls. Note that the length L3 (see FIG. 6) from the ground contact portion to the tip of the folded portion 490 may be 3 mm or more, and preferably 5 mm or more.

  The shape of the folded end portion 490 is not limited to the shape of FIG. 6 as long as the sheet material included in the side seal portion 140 is folded upward from below the entire lower surface 130. FIG. 7 shows an enlarged cross-sectional view of a folded end 491 (FIG. 7A) and a folded end 492 (FIG. 7B) according to a modification of the folded end 490. FIG.

  The difference between the folded end 490, the folded end 491, and the folded end 492 is the method of forming the folded end. As shown in FIG. 7, the folded end portion 491 and the folded end portion 492 are configured so that one of the sheet materials constituting the side seal portion 140 (that is, one of the upper seal margin 140a and the lower seal margin 140b) is the other sheet. It is formed so as to extend from the leading edge of the material.

  The folded end portion 491 is formed by folding the sheet material extended from the leading edge of the side seal portion 140 along the leading edge of the opposing sheet material. Further, the folded end portion 492 folds the sheet material extended from the front end edge of the side seal portion 140 outside a predetermined distance of the front end edge of the opposing sheet material so that the end edges of the respective sheet materials face each other. Is formed.

<Modification>
In the first embodiment, the example in which the container body is formed using the two blanks 101a and 101b corresponding to the first portion 170a and the second portion 170b has been shown. However, these blanks are formed integrally. May be. Specifically, for example, a blank can be formed as a connection portion by connecting a part of the peripheral edge of the blank corresponding to the first portion 170a and the second portion 170b.

  When the container body is formed using the integrally formed blank, the first portion 170a and the second portion 170b are overlapped, for example, by folding the blank at the connecting portion, and then the upper seal margin 140a. And the lower seal margin 140b is sealed. By forming blanks in this way, for example, when blanks are formed by punching a sheet material, many blanks can be punched from a single sheet material. Can be produced.

  In the above-described embodiment and modification, at least one of the upper isosceles trapezoidal surface 120a and the lower isosceles trapezoidal surface 120b may be formed as an isosceles trapezoidal surface that is not rectangular. By forming the upper isosceles trapezoidal surface 120a and the lower isosceles trapezoidal surface 120b in this way, at least one of the side surfaces above and below the side seal portion 140 of the side surface 120 of the container body in a box shape. Can be forward tapered or reverse tapered. Thereby, the container main body which has a shape with further high designability can be provided.

  The present invention can be suitably used for a packaging container filled with a liquid.

100, 400 Container body 101a, 101b Blank 110 Upper surface 111 Opening 120 Side surface 120a Upper isosceles trapezoidal surface 120b Lower isosceles trapezoidal surface 130 Lower surface 140 Side seal part 140a Upper seal margin 140b Lower seal margin 150 Folding piece 150a Upper folding surface 150b Lower folding surface 151 Folding ruled line 170a First part 170b Second part 190 Spout 200 Pump dispenser 210 Pump part 220 Extraction nozzle 230 Cap part 240 Tube 300, 301 Packaging container 490 to 492 Folding end part

Claims (3)

A box-shaped container body formed of a sheet material, comprising a convex polygonal upper surface that is not rectangular, a lower surface similar to the upper surface, and a plurality of side surfaces;
A spout attached to the center of the upper surface of the container body,
The container body is
The lower surface protrudes in a conical shape downward from the container body;
From each of the side surfaces, a connecting portion connected in a state where the sheet material overlaps, extends,
By extending the connecting portion along the side surface, at least a part of the connecting portion extends below the entire lower surface,
Packaging container.   The packaging container according to claim 1, further comprising a pump dispenser attached to the spout.   The packaging container according to claim 1, wherein the connection portion is folded upward at a position lower than the entire surface of the lower surface.

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