JP4184490B2 - Paper container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a paper container for storing contents such as liquid or granular materials, and more specifically, easily forms a spout for pouring out the contents stored in the paper container from the paper container. The present invention relates to a paper-belt type paper container.
[0002]
[Prior art]
Conventionally, as a gobeltop type paper container, generally, high pressure method low density polyethylene (LDPE) / paper / LDPE, LDPE / paper / LDPE / aluminum foil / adhesive / biaxially stretched polyethylene terephthalate (PET) / LDPE Or the thing of the structure which consists of medium density polyethylene (MDPE) or linear low density polyethylene (LLDPE) is used, and also in the said structure, the low-cost LDPE which abbreviate | omitted the lamination process of aluminum foil and PET There are also used ones composed of: / paper / LDPE / aluminum vapor-deposited layer / PET / LDPE or LDPE / paper / LDPE / silica vapor-deposited layer / PET / LDPE or LDPE / paper / LDPE / aluminum foil / LDPE.
[0003]
In the paper container having any of the above-mentioned structures, the spout is attached to a pouring tool made of a molded product and the pouring tool is used as the spout, and the hole is formed in the paper container. Cover the part again with a sealing sheet and peel off or break through the sealing sheet to make a spout. (3) Applying anti-heat adhesive to the top thermal adhesive part to open the thermal adhesive part easily And what makes a spout etc. by opening this top part heat bonding part is common.
[0004]
However, the spout of (1) has a high cost for the spouting tool, and the processing man-hours increase and the processing cost also increases, and the spout of (2) has a lower material cost than the spout using the spout of (1). However, the processing man-hours are increased and the processing cost is increased as in the case of the spout of (1), and the spout of (3) is cheaper than the spout of (1) and (2). There is a problem that it is necessary to satisfy functions that conflict with each other and that a spout at the time of opening is not aesthetically pleasing.
[0005]
[Problems to be solved by the invention]
Accordingly, an object of the present invention is to satisfy the contradictory functions of sealing performance and unsealing performance without using a high-priced dispensing tool or the like and without increasing the processing cost due to an increase in the number of processing steps. An object of the present invention is to provide a paper container that can easily form a spout having a good aesthetic appearance when opened.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the inventor of the present invention comprises a base material layer comprising at least a paper layer and a thermoadhesive resin layer on one surface of the base material layer. A paperbelt-type paper container made of a laminate comprising an inner layer and an outer layer made of a heat-adhesive resin layer on the other surface, and serving as a spout when the contents are poured out from the paper container. In the paper container, the inner layer of the paper container is left, the outer layer and the base material layer are substantially circular with an uncut portion on the upper side, and the substantially semicircular lower semicircular arc is a lower end bent portion. A cutting blade having a shape combined with a letter shape is formed. With such a configuration, a paper container having excellent sealing performance can be obtained, and a cutting blade serving as a spout is simultaneously formed when die-cutting to the developed dimensions of the paper container, and a straw is inserted and sucked out. It can also be a spout for pouring out the contents.
[0007]
The invention according to claim 2 is the paper container according to claim 1, wherein the base material layer includes the paper layer and a content protective layer positioned on the inner layer side of the paper layer. It is what. By comprising in this way, it can be set as the paper container excellent in barrier property.
[0008]
The invention according to claim 3 is the paper container according to claim 1 or 2, wherein the heat-adhesive resin layer is either high-pressure low-density polyethylene or medium-density polyethylene. It is what. By comprising in this way, it can carry out heat bonding easily and can be set as the paper container excellent in productivity and sealing performance.
[0009]
The invention according to claim 4 is the paper container according to any one of claims 1 to 3, wherein the inner layer has a thickness of 25 to 70 μm. With this configuration, the paper container can be easily opened when consciously performing the opening operation, but can be made into a paper container having excellent sealing performance during normal handling or transportation.
The invention according to claim 5 is the paper container according to claim 1, wherein the cutting blade is formed on a slope having a roof shape. By comprising in this way, a spout can be formed in the best position of a paper container.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to the drawings.
First, the paper container of the present invention will be described. A Gaveltop type paper container, for example, a high pressure method low density polyethylene (LDPE) / paper / LDPE, or LDPE / paper / LDPE / aluminum foil / LDPE or medium density. Polyethylene (MDPE), or LDPE / paper / LDPE / ethylene-vinyl acetate copolymer saponified product / LDPE or MDPE, or LDPE / paper / LDPE / polyvinylidene chloride / LDPE or MDPE, or LDPE / paper / LDPE / aluminum foil / adhesive / biaxially stretched polyethylene terephthalate (PET) / LDPE or MDPE, or LDPE / paper / LDPE / aluminum deposition layer / PET / LDPE or MDPE, LDPE / Paper / LDPE / Silica vapor deposition layer / Use of ET / LDPE or MDPE, LDPE / paper / LDPE / aluminum vapor deposition layer / biaxially oriented polyamide (ON) / LDPE or MDPE, LDPE / paper / LDPE / silica vapor deposition layer / ON / LDPE or MDPE can do.
[0012]
FIG. 1 is a perspective view of a principal part showing a first embodiment of a paper container according to the present invention, FIG. 2 is a sectional view taken along line XX of the paper container in FIG. 1, and FIG. 2 is a cross-sectional view taken along line XX shown in FIG. 1, and FIGS. 4 to 6 are plan views showing the shape of the cutting edge, in which 1 and 11 are paper containers, 2 is a base material layer, 2 'Is a paper layer, 3 is an inner layer, 4 is an outer layer, 5 is an adhesive layer, 6 is a content protective layer, 20, 21, 22, and 23 are cutting edges, and 30 and 31 are thermal adhesive resin layers.
[0013]
FIG. 1 is a perspective view showing a main part of a paper container according to a first embodiment of the present invention. The paper container 1 according to the first embodiment of the present invention is a high pressure method low density polyethylene (LDPE) / paper / LDPE. A substantially V-shaped cutting blade 20 serving as a spout when the contents are poured out from the paper container 1 is formed on the slope that forms the roof of the paper container 1. As shown in FIG. 2, the cutting blade 20 leaves the LDPE which is the heat-adhesive resin layer 30 of the inner layer 3, and the base material layer 2 composed of the paper layer 2 ′ and the heat-adhesive resin layer 31 provided on the outside thereof. It is provided so as to cut the outer layer 4 made of LDPE. With this configuration, the contents are shielded from the outside by the heat-adhesive resin layer 30 and protected in a sealed state until use, and are formed into the substantially V shape shown in FIG. 1 when used. The LDPE of the heat-adhesive resin layer 30 can be easily cut with the shape of the cutting blade 20 formed in the substantially V shape by pressing the portion surrounded by the cutting blade 20 with fingers or the like. A substantially V-shaped spout can be provided in the paper container 1.
[0014]
FIG. 3 is a cross-sectional view taken along the line XX of FIG. 1 of the second embodiment of the paper container of the present invention, and the paper container 11 of the second embodiment of the present invention is formed of LDPE / paper / LDPE / A substantially V-shaped cutting blade 20 composed of a silica vapor deposition layer / PET / LDPE (content side) and serving as a spout when the content is poured out of the paper container 11 is a heat-adhesive resin layer of the inner layer 3 With the LDPE being 30, the outer layer 4 made of LDPE being the heat-adhesive resin layer 31, and the paper layer 2 'and the inner layer 3 side of the paper layer 2' are vapor-deposited with silicon oxide via the adhesive layer 5 made of LDPE. It forms so that the base material layer 2 provided with the content protection layer 6 which consists of a polyester film may be cut | disconnected. By configuring in this way, the contents are blocked from the outside by silica-deposited PET with excellent gas barrier properties provided on the base material layer 2 and LDPE which is the thermal adhesive resin layer 30 of the inner layer 3 until use. Protected in a sealed state. In use, the LDPE of the inner layer 3 is formed into the substantially V-shaped cutting blade 20 by pressing a portion surrounded by the substantially V-shaped cutting blade 20 shown in FIG. The paper container 11 can be provided with a substantially V-shaped spout.
[0015]
The thickness of the inner layer 3 is suitably 25 to 70 μm, preferably 30 to 60 μm. The reason for this is that if it is thinner than 25 μm, there is a possibility that the fingers will cut when handling the paper container by mistake, and if it is thicker than 70 μm, it will be opened intentionally. This is because it may be difficult to cut even if an operation is performed.
[0016]
Further, in the paper container 11 shown in the second embodiment of the present invention, the inner layer protective layer 6 has been described using silica-deposited PET, but instead of this, aluminum-deposited PET, aluminum oxide-deposited PET. Silica vapor deposition ON, aluminum vapor deposition ON, aluminum oxide vapor deposition ON, PET, ON, or saponified ethylene-vinyl acetate copolymer, aluminum foil, polyvinylidene chloride, etc., to impart gas barrier properties, strength, etc. A thing can be used suitably. Further, the heat-adhesive resin layer 30 is not limited to high-pressure method low-density polyethylene (LDPE), and medium-density polyethylene (MDPE) may be used in consideration of the contents and other physical properties. Absent.
[0017]
Next, the shape of the cutting blade provided in the paper container of the present invention will be described.
FIG. 4 shows a substantially circular cutting blade 21 formed on the slope forming the roof of the paper container of the present invention. The cutting blade 21 is provided as a straw insertion port for sucking out the contents. The cutting blade 21 is provided with a portion having no cutting edge on the upper side in FIG. 4. When a straw is inserted from the portion surrounded by the cutting blade 21, for example, when the inner layer 3 is cut, this cutting blade 21 is cut. The portion surrounded by the blade 21 is prevented from being mixed into the contents.
[0018]
FIG. 5 shows a cutting blade 22 in which both the cutting blade 20 and the cutting blade 21 are combined on the slope forming the roof of the paper container of the present invention. By providing such a cutting blade 22, the contents can be sucked out with a straw, and as shown in the first and second embodiments of the present invention, a spout for pouring out the contents is used. You can also.
[0019]
FIG. 6 shows a substantially U-shaped cutting blade 23 provided on the slope forming the roof of the paper container of the present invention. This usage is the same as that of the cutting blade 20, and a description thereof will be omitted.
[0020]
As described above, the cutting blade provided in the paper container of the present invention can take various shapes, and the above-described shapes are representative shapes thereof, and are not limited thereto. Any shape that can easily form a spout from which the contents can be taken out with a finger or finger is included in the present invention.
[0021]
In addition, the cutting blade provided in the paper container of the present invention can be formed at the same time as the die is cut to the developed dimension by setting the paper container of the present invention together with the punching die for punching to the developed dimension.
[0022]
【The invention's effect】
As has been often described, the paper container of the present invention does not use a high-priced pouring tool or the like, and does not increase the processing cost due to an increase in the number of processing steps. In addition to being able to be easily filled, there is an effect that it is possible to easily form a spout with a good aesthetic appearance when opened.
[Brief description of the drawings]
FIG. 1 is a perspective view of an essential part showing a first embodiment of a paper container according to the present invention.
2 is a cross-sectional view of the paper container of FIG. 1 taken along line XX.
3 is a cross-sectional view taken along line XX shown in FIG. 1 of the second embodiment of the paper container according to the present invention.
[Figure 4]
FIG.
FIG. 6 is a plan view showing the shape of a cutting blade.
[Explanation of symbols]
1,11 Paper container 2 Base material layer 2 'Paper layer 3 Inner layer 4 Outer layer 5 Adhesive layer 6 Contents protective layer
20, 21, 22, 23 Cutting blade
30, 31 Thermal adhesive resin layer

Claims (5)

Gable comprising a laminate comprising at least a base material layer comprising a paper layer, an inner layer comprising a thermoadhesive resin layer on one surface of the base material layer, and an outer layer comprising a thermoadhesive resin layer on the other surface In the top-type paper container, an upper portion is formed on the outer layer and the base material layer, leaving the inner layer of the paper container in the paper container so as to serve as a spout when the contents are poured out of the paper container. A paper container comprising: a cutting blade having a shape formed by combining a substantially circular shape having a non-cut portion and a substantially V-shape having a lower half arc of the substantially circular shape at a lower end bent portion. The paper container according to claim 1, wherein the base material layer includes the paper layer and a content protective layer positioned on an inner layer side of the paper layer. The paper container according to claim 1 or 2, wherein the heat-adhesive resin layer is one of high-pressure low-density polyethylene and medium-density polyethylene. The paper container according to any one of claims 1 to 3 , wherein the inner layer has a thickness of 25 to 70 µm.   The paper container according to claim 1, wherein the cutting blade is formed on a slope having a roof shape.

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