JP6972980B2 - Packaging container - Google Patents

Description

The present invention relates to a packaging container in which the content liquid can be pumped out by a pump dispenser.

A container body made of a sheet material including a paper layer, a spout inserted into a through hole formed in the upper part of the container body, and a spout attached to the spout by a cap member to pump out the liquid inside the container body. Packaging containers including pump dispensers that can be used are known.

For example, in Patent Document 1, a packaging container including a container body formed in a box shape using a sheet material based on paper and a pump dispenser attached to a spout (glomet) on the upper surface of the container body. (Liquid container) is disclosed. In such a packaging container, the pump dispenser can be fixed to the spout by screwing the screw portion formed on the inner peripheral surface of the cap member of the pump dispenser to the screw portion formed on the outer peripheral surface of the spout. ..

Japanese Unexamined Patent Publication No. 8-85561

In such a packaging container, the pump dispenser and the container body are firmly fixed by designing so that the end edge of the cap member on the container body side comes into contact with the surface of the container body when the cap member is screwed into the spout. be able to. However, depending on the positioning accuracy of the cap member when the screwing is completed, the rotation progresses further from the state where the cap member is in contact with the container body, and the flange of the spout is passed through the sheet material of the container body by the edge of the cap member. By pressing the portion, the sheet material and the flange portion may be deformed downward with respect to the spout cylindrical side wall portion. FIG. 3 shows a partial side view of the packaging container 400 according to the prior art in such a state ((a) in FIG. 3) and an enlarged cross-sectional view of a main part surrounded by a dotted line ((b) in FIG. 3). Is shown.

As shown in FIG. 3B, the container body 200 around the flange portion 283 and the spout 280 is deformed so as to be inclined from the center of the flange portion 283 toward the edge. As a result, between the edge of the cap member 330 formed substantially parallel to the plane orthogonal to the central axis of the cap member 330 and the inclined surface of the container body 200, the cap member 330 is directed toward the outside. An opening gap 500 is generated.

In the gaps generated in this way, for example, when the packaging container is used in a humid place such as a bathroom, water and detergent accumulate, which causes a problem of mold generation around the cap member. there were.

In addition, water or detergent that has entered the gap infiltrates the inside of the paper layer from the end face of the sheet material facing the through hole of the container body, causing wrinkles in the sheet material and making the packaging container look unattractive. There is a problem that the strength of the sheet material is lowered and it becomes difficult for the pump dispenser to stand on its own.

The present invention has been made in view of such problems, and the generation of mold around the cap member and wrinkles on the sheet material due to the accumulation of water and detergent in the gap between the cap member of the pump dispenser and the container body. It is an object of the present invention to provide a packaging container which can prevent the occurrence and the decrease in the strength of the sheet material.

One aspect of the present invention for solving the above problems is to provide a container body made of a sheet material including a paper layer, a cylindrical side wall portion on which a threaded portion is formed, and a flange portion extending outward from the side wall portion. A spout in which the flat surface of the flange portion is fixed to the container body by inserting the side wall portion into the through hole formed in the container body, and a cylindrical cap fixed to the spout by screwing into the screw portion. A packaging container including a member and a pump dispenser capable of pumping out the content liquid contained in the container body, and the cap member connects the inner peripheral surface and the outer peripheral surface at the end edge on the container body side. It is a packaging container that has an inclined surface whose diameter increases while approaching the container body side from the inner peripheral surface to the outer peripheral surface, and at least the connection portion between the inclined surface and the outer peripheral surface comes into contact with the container body. ..

According to the present invention, it is possible to provide a packaging container capable of preventing the generation of mold around the cap member of the pump dispenser, the generation of wrinkles on the sheet material, and the decrease in the strength of the sheet material.

An exploded perspective view of a packaging container according to an embodiment of the present invention. Partial side view of the packaging container according to the embodiment and enlarged cross-sectional view of the main part Partial side view and enlarged view of the main part of the packaging container according to the prior art

The packaging container according to the embodiment of the present invention will be described with reference to the drawings. Further, in the following description, for convenience, the vertical direction in which the packaging container is upright is referred to as the vertical direction.

<Embodiment>
FIG. 1 shows an exploded perspective view of a packaging container 100 according to an embodiment of the present invention. As shown in FIG. 1, the packaging container 100 includes a container body 200, a spout 280 attached to the upper surface 210 of the container body 200, and a pump dispenser 300 attached to the spout 280. FIG. 2 shows a partial side view of the packaging container 100 ((a) in FIG. 2) and an enlarged cross-sectional view ((b) in FIG. 2) of the main part surrounded by the dotted line.

(Container body)
The container body 200 can be formed by, for example, cutting a sheet material including a paper layer into a predetermined shape to form a blank, and overlapping and sealing the ends of the blank. As shown in FIGS. 1 and 2, the container body 200 is formed by bending a sheet material based on paper into a box shape as an example, and has a pair of first surfaces facing the upper surface 210 and the lower surface 230. A container comprising a side surface 221 of the above and a pair of second side surfaces 222 facing each other.

The upper surface 210 is provided with an opening 211 that communicates the storage space of the container body 200 with the outside. A spout 280 is attached to the opening 211.

Bent pieces 250 connected in a triangularly bent state are connected to each of the both side ends of the first side surface 221 and the second side surface 222. Further, a side seal portion 240 having a predetermined width formed by sealing the end portion of the sheet material extends from the center in the vertical direction of the bent piece 250 connected to both side ends of the first side surface 221 and the first side surface 221. It is out.

The bent piece 250 is bent toward the second side surface 222 and is attached to the surface of the second side surface 222 by a heat seal, a hot melt adhesive, or the like. As a result, the side seal portion 240 is bent along the first side surface 221 and the second side surface 222.

The container body 200 is not limited to this form, and may be, for example, a self-supporting flexible packaging bag, a brick pack, or the like.

The sheet material used for forming the container body 200 is, for example, a printed layer / a thermoplastic resin layer / a paper base material layer / an adhesive resin layer / a barrier layer / an adhesive layer / in order from the outside to the inside of the container body 200. It can be configured by laminating sealant layers.

(Spout)
The spout 280 includes a cylindrical side wall portion 281 formed with a threaded portion 282 and a flange portion 283 extending outward from the side wall portion 281. As shown in FIG. 2A, in the spout 280, the side wall portion 281 is inserted into the through hole 211 formed in the container body 200, and the flat surface of the flange portion 283 is attached to the upper surface 210 of the container body 200. Is fixed by. As a method of attaching the flange portion 283 to the container body 200, a well-known method such as welding can be used.

(Pump dispenser)
The pump dispenser 300 is a member for pumping out the content liquid filled in the container body 200, and includes a pump portion 310 and a cap member 320. As shown in FIGS. 1 and 2, in the pump dispenser 300, a part of the pump portion 310 is inserted into the through hole of the spout 280, and the cap member 320 is screwed into the screw portion 282 of the spout 280. Attached to the spout 280.

The pump unit 310 includes, for example, a pump head 311, a cylindrical piston 312 formed below the pump head 311 and a cylindrical cylinder unit 313 in which the piston 312 is slidably mounted in the vertical direction, and a pump head 311. Consists of a tubular pouring nozzle 314 extending from.

By pushing down the pump head 311 in the pump section 310, the piston 312 slides inward in the cylinder section 313. As the piston 312 slides inward of the cylinder portion 313, the content liquid is pumped from the lower end of the cylinder portion 313 through the inside of the cylinder portion 313 by a pump mechanism (not shown) inside the cylinder portion 313. The pumped content liquid can be pumped out from the pouring nozzle 314 to the outside of the pump unit 310 via the inner circumference of the piston 312. The structure of the pump unit 310 is not particularly limited as long as it can pump out the content liquid.

The cap member 320 is a member for fixing the pump dispenser 300 to the container body 200. The cap member 320 is a cylindrical member having a threaded portion 325 formed on an inner peripheral surface 321 so that it can be fixed to the threaded portion 282 of the spout 280 by screwing, and can be provided on the outer periphery of the cylinder portion 313, for example.

As shown in FIG. 2B, the cap member 320 has an inclined surface 323 connecting the inner peripheral surface 321 and the outer peripheral surface 322 at the end edge on the container body 200 side. The diameter of the inclined surface 323 increases from the inner peripheral surface 321 toward the outer peripheral surface 322 while approaching the container main body 200 side (while moving toward the lower side of the paper surface in FIG. 2). Then, at least the connecting portion 324 between the inclined surface 323 and the outer peripheral surface 322 is in contact with the surface (upper surface 210) of the container body 200.

As described above, there is no gap between the outer peripheral surface 322 of the cap member 320 and the surface of the container body 200. Therefore, according to the packaging container 100, it is possible to prevent water and detergent from accumulating in the gap between the cap member 320 and the container body 200 and infiltrating into the inside of the paper layer, so that the periphery of the cap member 200 can be prevented. It is possible to prevent the generation of mold and the decrease in the strength of the sheet material.

If the inclined surface 323 is formed so that the diameter increases while approaching the container body 200 side from the inner peripheral surface 321 toward the outer peripheral surface 322, the inclined surface 323 is formed with a uniform inclination as shown in FIG. 2 (b). It may be formed so that the diameter gradually increases while approaching the container body 200 side from the inner peripheral surface 321 toward the outer peripheral surface 322, or it may have a shape other than this. Not particularly limited.

When the inclined surface 323 is formed with a uniform inclination, the acute angle formed by the central axis of the cap member 200 and the normal line of the inclined surface 323 is set to 1 ° or more, so that the acute angle between the cap member 320 and the container body 200 is set. It is possible to sufficiently and effectively suppress the generation of gaps that open to the outside.

The shape of the connecting portion 324 is not limited as long as it can come into contact with the container body 200. The inclined surface 323 and the outer peripheral surface 322 may be connected at an acute angle, for example, as shown in FIG. 2B, or at least one of the inclined surface 323 and the outer peripheral surface 322 becomes a curved surface and becomes the other surface. You may connect.

INDUSTRIAL APPLICABILITY The present invention can be suitably used for a packaging container including a container body and a pump dispenser capable of pumping out the content liquid.

100, 400 Packaging container 200 Container body 210 Top surface 211 Opening 220 Side surface 221 First side surface 222 Second side surface 230 Bottom surface 240 Side seal part 250 Bending piece 280 Spout 281 Side wall part 283 Flange part 300 Pump dispenser 310 Pump part 311 Pump head 312 Piston 313 Cylinder 314 Injection nozzle 320 Cap member 321 Inner peripheral surface 322 Outer peripheral surface 323 Inclined surface 324 Connection part 500 Gap

Claims (2)

A container body made of a sheet material including a paper layer,
A cylindrical side wall portion on which a threaded portion is formed and a flange portion extending outward from the side wall portion are included, and the side wall portion is inserted into a through hole formed in the container body to form a flat surface of the flange portion. With the spout fixed to the container body,
A packaging container including a cylindrical cap member fixed to the spout by screwing into the screw portion, and a pump dispenser capable of pumping out the content liquid contained in the container body.
The cap member connects the inner peripheral surface and the outer peripheral surface at the end edge on the container body side, and the inclined surface whose diameter increases while approaching the container body side from the inner peripheral surface toward the outer peripheral surface. A packaging container in which at least a connecting portion between the inclined surface and the outer peripheral surface abuts on the container body. The packaging container according to claim 1, wherein the inclined surface has a uniform inclination, and an acute angle formed by a central axis of the cap member and a normal of the inclined surface is 1 ° or more.

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