JP2003321024A - Container for beverage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a container for a beverage which conveniently keeps the cap material for the opening of the container integrally with a container body after opening, creates no environmental problem caused by disposition, and has no production problem. <P>SOLUTION: The beverage opening 3 of a container 9 is sealed with a cover material 2. The cover material 2 is sealed with a first seal part 6 covering the peripheral part of the opening 3 of a top material 4 and with a second seal part 7 adhered stronger than the seal part 6 provided on a place other than the place for the seal part 6. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a beverage container, and more specifically, it can be used without removing the lid member covering the opening portion for a drinking mouth from the container body, and the lid member can be easily opened. The present invention relates to an easy-to-drink beverage container.

[0002]

2. Description of the Related Art Conventionally, beverage containers such as juice and coffee having a content volume of about 300 ml are mainly metal cans having a cylindrical shape such as a cylindrical shape, but in recent years, vending machines can handle them and mainly paper of similar shape. A cylindrical or polygonal tubular can-shaped beverage container made of paper or a plastic can-shaped beverage container has become popular. In these containers, after filling the contents from the mouth opening provided in the top member in advance, the mouth opening is covered and sealed with a lid material such as a pull tab.

In the case of a method of completely removing the lid member covering the opening portion for a drinking mouth from the container body at the time of drinking, the removed lid member becomes an obstacle or the user throws it away on the spot. Then, it could become an environmental problem. In addition, when the lid material covering the mouth opening portion is peeled off during drinking, it may be difficult to peel off easily. In that respect, in the metal beverage container, since the structure of the so-called opening part for a drinking mouth is integrated with the container body even after opening, the pull ring system is widespread,
The above problems are few.

Therefore, even in a cylindrical can-shaped paper beverage container mainly made of paper and a plastic-molded cylindrical can-shaped plastic beverage container, the lid member for covering the opening portion for the drinking mouth is not removed from the container body. There are suggestions that can be used for.

For example, Japanese Patent Laid-Open No. 10-324361 discloses
Instead of using a material such as aluminum foil, which has both barrier properties and folding suitability, for the lid material, use a synthetic resin film that has barrier properties and a synthetic resin synthetic paper that has folding suitability. When the contents are filled into the paper container body using the same as before, the lid material is folded up so that the lid material is maintained in the upright state and there is no interference with the filling nozzle, which hinders the filling work. In addition, it can maintain the barrier property, and since it does not use metal foil such as aluminum foil for the lid material, it is integrated with the paper container body without the trouble of separating it from the paper container body at the time of recycling treatment or incineration disposal. It is a proposal for the covered lid material.

[0006] However, it is not a specific proposal for facilitating the opening method of the lid member or the attachment method for integrally opening the lid member for covering the mouth opening portion of the beverage container after opening.

[0007]

DISCLOSURE OF THE INVENTION The present invention integrates a lid member for covering a mouth opening portion of a beverage container with the container body even after opening, which is convenient, has no environmental problems due to disposal, and is manufactured. The object is to provide a beverage container without the above problems.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is the first aspect of the present invention.
The invention according to claim 1, in a beverage container 9 having a structure in which the mouth opening 3 for a mouth is sealed with a lid member 2, the lid member 2 covers a peripheral portion of the mouth hole 3 for a mouth of the top member 4, and a first sealing portion. 6 and a portion other than the first seal portion 6, and the first seal portion 6
The beverage container 9 is characterized in that it is sealed with the second seal portion 7 which is sealed with higher adhesive strength.

The invention according to claim 2 of the present invention is claim 1
The beverage container 9 described above is characterized in that the first seal portion 6 is formed by forming a minute recessed portion 4a in the peripheral portion of the drinking mouth opening portion 3.

The invention according to claim 3 of the present invention is claim 1
2 is a beverage container 9 characterized in that the lid member 2 is made of a material that curls when peeled off from the first seal portion 6.

The invention according to claim 4 of the present invention is claim 3
In the beverage container 9 described above, the lid member 2 is a beverage container 9 in which a seal inner surface side includes a hygroscopic material layer.

The invention according to claim 5 of the present invention is claim 3
Alternatively, in the beverage container 9 according to item 4, the lid member 2 includes at least two layers having different heat shrinkage rates, and the heat shrinkage rate on the seal inner surface side is small.

The invention according to claim 6 of the present invention is claim 1
The beverage container 9 according to any one of claims 1 to 5, wherein the lid member 2 includes a material layer having bendability.

The invention according to claim 7 of the present invention is claim 6
The material layer having the foldability described above is a beverage container 9 characterized by being made of synthetic resin synthetic paper.

The invention according to claim 8 of the present invention is claim 1
The beverage container 9 according to any one of claims 1 to 7, wherein the lid member 2 has a shape curled at the tip 2b of the first seal portion 6.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail based on the embodiments shown in FIGS.

FIG. 1 is an overall structural view of a beverage container 9 in the form of a can made of paper or plastic according to the present invention. Figure 1
In FIG. 1B and FIG. 1B, the beverage container 9 is the body member 1.
And the top member 4 and the bottom member 5 having the mouth opening 3 for the mouth sealed with the pull tab-shaped lid member 2 are provided by a paper base material made of a laminated material mainly containing paper, and these are heat-sealed. It is a sealed structure. The material used as the base material of the beverage container 9 is a laminated material formed by laminating a synthetic resin layer, a paper layer, a metal foil layer, a metal vapor deposition thin film layer, and the like. A synthetic resin having heat melting property and waterproof property is provided. Further, the beverage container 9 made of only a plastic material may be used.

As the material of the lid material 2 in the form of a small piece sheet, for example, a laminated material in which materials having various characteristics are laminated using paper as a base material is used. For example, in addition to a synthetic resin layer and a paper layer, a hygroscopic material layer may be laminated on the inner surface of the seal, or a paper layer may be laminated in a sandwich shape with layers having different heat shrinkage rates,
A laminated material obtained by laminating synthetic resin synthetic paper having a folding property is used. Further, the lid member 2 configured only by the plastic sheet material and the adhesive layer may be used.

1 (c), the container of the present invention can be peeled between the lid member 2 and the top member 4 at least at the peripheral portion covering the opening part 3 for a drinking mouth with normal force. The first seal portion 6 having an adhesive strength as much as possible is provided, and the second seal portion 7 having a stronger adhesive strength than the first seal portion 6 is provided in the center of the ceiling member 4. Even if the lid member 2 is peeled off to expose the mouth opening portion 3 for the drinking mouth, the lid member 2 is not easily peeled off and remains in the second seal portion 7.

Next, a method of forming the first seal portion 6 and the second seal portion 7 will be described in detail. When the lid member 2 is attached to the ceiling member 4, the first seal portion 6 and the second seal portion 7 are provided, and in order to satisfy the contradictory conditions of easy opening of the lid member 2 and difficulty of detachment, Try to maintain different bond strengths.

To this end, for example, as shown in FIG. 1C, a heat seal layer 2a having a different adhesive strength is provided on each part. However, heat sealing conditions are the same. The same heat seal layer 2a is used, and the adhesive strength is changed by changing the heat seal conditions (temperature, pressure, time, etc.) at each part. The same heat seal layer 2a is used, and the respective parts are bonded under the same heat seal conditions (temperature, pressure, time, etc.). After that, the second seal portion 7 can be subjected to heat sealing again, and a method of increasing the adhesive strength can be appropriately selected.

However, in the above method of changing the heat-sealing conditions, slight variations in the heat-sealing conditions tend to affect the quality of the product.

Therefore, as a more preferable and practical method, the top member 4 of the container body other than the vicinity of the opening portion 3 for the mouth of the top member 4 corresponding to the first seal portion 6 of the lid member 2 or the second seal portion 7 is used. Countless minute recesses 4a are formed on the whole by embossing or the like.

According to this method, the actual bonding surface is small in the portion where the minute recess 4a is present, and a sufficient sealing portion is not formed, so the adhesive strength is lower than in other portions. Therefore, even under the same heat-sealing conditions, desired different adhesive strengths can be obtained depending on the size of the area where the recess 4a is formed.

The minute recesses 4a can be formed by, for example, ultrasonic treatment, heating, cold pressing, pressurization using high frequency, embossing, or the like. In particular, the method of ultrasonic treatment using a convex ultrasonic horn is most effective because it can form an infinite number of uniform and minute concave portions 4a.

Next, as shown in FIG. 1 (d), regarding the container of the present invention, a method for allowing the user to peel off the lid member 2 of the beverage container 9 to make it easier to drink the beverage will be described in detail. If the lid material 2 remains in the container body when the first seal portion 6 is peeled off, when the beverage is drunk, depending on the material of the lid material 2, the elasticity of the material causes the return and the opening for the mouth opening. Hole 3
It may be a hindrance when drinking by blocking, etc., which may impair the convenience of the user.

Therefore, as a method for solving this problem, the first method is to impart curling property to the lid member 2. That is, the lid material 2
The material which is not hygroscopic and the material which is not hygroscopic are combined. For example, a hygroscopic synthetic resin is used for one (back side) layer. For example, nylon easily absorbs moisture and desorbs moisture easily. Therefore, due to the difference in the expansion / contraction rate between the other material layer (for example, polyethylene resin), the cover material 2 will be as shown in FIG. Curl away from the mouth 3. Therefore, when the user peels off the first seal portion 6, even if the lid member 2 is still adhered to the second seal portion 7, the drinking hole opening 3 is not closed. The lid member 2 may be formed by laminating two kinds of synthetic resin layers having different expansion / contraction rates or coating one of them.

Further, a composite material in which paper and synthetic paper are combined may be used for the lid member 2. Although paper has hygroscopicity, similar results are obtained because synthetic paper has low hygroscopicity. For example, synthetic paper based on bleached kraft paper and polypropylene resin, synthetic paper obtained by mixing high-density polyethylene with an inorganic filler and an additive, and a material obtained by sand-poly processing by extrusion laminating method may be used.

Next, a composite material obtained by combining the lid member 2 with materials having different heat shrinkage rates may be used. For example, one side (front side)
A synthetic resin film having a large heat shrinkability is used for the layer. For example, a biaxially oriented polypropylene film is used on one side (front side), and a synthetic resin (for example, polyethylene resin) having low heat shrinkability is used for the material layer on the other side (back side). When the lid member 2 made of such a composite material having a different heat shrinkage rate is heat-sealed to the ceiling member 4, when the lid member 2 is peeled off, it curls away from the mouth 3 as shown in FIG. . Therefore, when the user peels off the first seal portion 6, even if the lid member 2 is still adhered to the second seal portion 7, the drinking hole opening 3 is not closed.

By adopting the above-mentioned structure, as shown in FIG. 2, for example, the lid member 2 covers almost the entire surface of the ceiling member 4, and the drinking hole opening 3 is hermetically sealed. Also in the case of the above container, it is possible to provide a container that does not cover the opening 3 and is easy to use and drink.

Next, in the second method, the lid material 2 is provided with a bendability. That is, as shown in FIG. 3, the lid material 2 is provided by compounding a material having bendability and another material. That is, a synthetic resin synthetic paper having a bendability, an adhesive resin, a synthetic resin film having a barrier property, and a synthetic resin film having a heat sealing property with respect to the ceiling member 4 are laminated from the upper layer to the opening part 3 for a drinking mouth. The composite material is used.

As the synthetic resin synthetic paper having the folding property for the lid material 2, for example, high density polyethylene mixed with an inorganic filler and an additive can be used.

The lid member 2 having the above-described bending suitability
By using, even when the user removes the first seal portion 6 and the lid material 2 is still adhered to the second seal portion 7, the upright state of the lid material 2 can be maintained. Therefore, the opening 3 is not closed.

By adopting the above-mentioned structure, as shown in FIG. 3, it is possible to provide an easy-to-use container in which the lid member 2 does not cover the opening 3.

Next, the embodiment shown in FIG. 2 will be described in detail. The lid member 2 is sized so as to cover the entire top member 4. At least a portion covering the peripheral portion of the opening portion 3 is provided with a first seal portion 6 having an adhesive strength such that it can be peeled off by a normal force, and the first seal portion is provided on the opposite side of the mouth opening portion 3. The second seal portion 7 having a stronger adhesive strength than 6 is provided. Further, when the lid member 2 is peeled off, the lid member 2 is made of a composite material having a different heat shrinkage ratio, which is curled by heat treatment with the second seal portion 7 as a base, or a composite material including a hygroscopic layer.
It is the beverage container 9 which is used for the above and shows a state in which the lid curls and is attached to the container after being peeled off.

Next, the embodiment shown in FIG. 3 will be described in detail. The lid member 2 is provided with a first seal portion 6 having an adhesive strength that can be peeled off by a normal force at least in a portion covering the peripheral portion of the mouth opening portion 3, and a first seal portion 6 is provided in the center of the top member 4 from the center. The second seal portion 7 having stronger adhesive strength than the one seal portion 6 is provided. Furthermore, by using a foldable composite material for the lid member 2, when the lid member 2 covering the opening 3 is peeled off, the lid member stands up at the second seal portion 7 and the container It is a beverage container showing a state of being adhered to.

Next, the embodiment shown in FIG. 4 will be described in detail. The lid member 2 is sized so as to cover the entire top member 4. A first seal portion 6 having an adhesive strength that can be peeled off by a normal force is provided on at least the peripheral portion of the top member 4 of the top member 4, and the first seal portion 6 is provided on the opposite side of the opening portion 3. The second seal portion 7 having a stronger adhesive strength is provided. Further, a hole 8 is provided in the first seal portion range of the lid material 2 so that the lid material 2 can be easily peeled off. When the lid material 2 is peeled off, the hole 8 formed in the lid material 2 can be easily opened by hooking it with a finger, and the lid material 2 up to the second seal portion 7 can be peeled off. It is a container.

Next, the embodiment shown in FIG. 5 will be described in detail. The lid member 2 in which one end 2b of the lid member 2 is curled
At least a portion that covers the periphery of the opening portion 3 for a drinking mouth is provided with a first seal portion 6 having an adhesive strength such that it can be peeled off by a normal force, and a first seal is provided from the center of the top member 4. The second seal portion 7 having a stronger adhesive strength than the portion 6 is provided. Since the tip 2b of the lid member 2 is not curled and sealed, when the lid member 2 covering the opening 3 is peeled off,
The beverage container 9 can be easily peeled off the lid 2 by pinching the tip portion 2b with a fingertip and can be attached to the container in a curled state at the second seal portion 7.

Next, the embodiment shown in FIG. 6 will be described in detail. The lid member 2 in which one end 2b of the lid member 2 is curled
At least a portion that covers the periphery of the opening portion 3 for a drinking mouth is provided with a first seal portion 6 having an adhesive strength such that it can be peeled off by a normal force, and a first seal is provided from the center of the top member 4. The second seal portion 7 having a stronger adhesive strength than the portion 6 is provided. Since the tip 2b of the lid member 2 is not curled and sealed, when the lid member 2 covering the opening 3 is peeled off,
The beverage container 9 is shown in a state in which the tip portion 2b is pinched with a fingertip, the curl portion is extended toward the front side a, and the lid member 2 is pulled upward to remove the lid material 2.

Next, the embodiment shown in FIG. 7 will be described in detail. The lid member 2 in which one end 2b of the lid member 2 is curled
At least a portion that covers the periphery of the opening portion 3 for a drinking mouth is provided with a first seal portion 6 having an adhesive strength such that it can be peeled off by a normal force, and a first seal is provided from the center of the top member 4. The second seal portion 7 having a stronger adhesive strength than the portion 6 is provided. After peeling the lid member 2 from the first seal portion 6,
The beverage container 9 shows a state in which the tip portion 2b of the lid member 2 is curled by the second seal portion 7 and is attached to the container at the second seal portion 7.

[0041]

As described above, according to the present invention, the lid member for covering the opening part for the drinking mouth does not have to be removed from the container body, so that the lid member peeled off from the container body at the time of drinking as in the conventional case becomes an obstacle, and There is no environmental problem that they are thrown away on the spot, and even when drinking the contents, the lid material of the mouth part can be easily opened, and it can be curled or bent so that it does not get in the way Therefore, it is possible to provide a beverage container which is easy to remove the lid material and is easy to drink and has excellent convenience such as easy integration with the container body and does not have a manufacturing problem.

[Brief description of drawings]

FIG. 1 (a) is an explanatory view of a beverage container according to the present invention, and FIG. 1 (b) is a cross-sectional view showing a beverage container in which an opening portion for a mouth is constituted by a top member and a lid member of the present invention. Is a figure,
(C) is an explanatory view showing in section the heat sealing method of the top member of the present invention and the lid member that covers the mouth opening portion, and (D) shows the top member of the present invention and the mouth opening portion for the mouth opening. It is explanatory drawing which shows in cross section that it has integrated with the top member of a drink container, even if the covering lid material is peeled off.

FIG. 2 is an explanatory view showing that the whole lid material covering the opening portion for the mouth of the top member of the beverage container of the present invention has a function of being easily peeled off and also having a function of being easy to drink by providing curling property. is there.

FIG. 3 shows that the lid material in the form of a small piece that covers the opening portion for the mouth of the top member of the beverage container of the present invention has a function of being easily peeled off and also has a function of being easy to drink by providing a folding property. FIG.

FIG. 4 is a function of easily peeling off a full-face lid member covering a mouth opening portion of a top member of a beverage container of the present invention, and a function of further easily peeling off the full-face lid member by providing a finger insertion hole in the lid member. It is explanatory drawing which shows having provided with a plane.

FIG. 5 is an explanatory diagram showing a lid member having a curl shape as a function of easily peeling off a tip end of a small-piece sheet-like lid member that covers a mouth opening portion of a top member of a beverage container of the present invention.

FIG. 6 is an explanatory view showing a state in which a curled front end portion of the lid member is extended to the front when opening a small-piece sheet-like lid member that covers the mouth opening portion of the top member of the beverage container of the present invention. Is.

FIG. 7: After opening a small-piece sheet-like lid member that covers the mouth opening portion of the top member of the beverage container of the present invention, the tip of the lid member 2 is curled at the second seal portion 7. It is explanatory drawing which shows the state which has adhered to the container in the shape.

[Explanation of symbols]

1 ... Body member 2 ... Lid material 2a ... Heat seal layer 2b ...
Tip part 3 of the lid material ... Opening part 4 for drinking mouth ... Top member 4a ... Recess 5 ... Bottom member 6 ... First seal part 7 ... Second seal part 8 ... Hole 9 ... Beverage container a ... State in which tip of lid is extended b ... State in which tip of lid is pulled up

   ─────────────────────────────────────────────────── ─── Continued front page    F term (reference) 3E060 AA13 AB33 BA24 BC04 CF03                       DA30 EA03 EA13                 3E084 AA02 AA12 AA15 AA24 AA34                       AA37 AB01 BA01 BA07 BA08                       BA09 CB03 CB04 CC03 CC07                       CC08 FA09 FD13 GB08 GB12                       GB17 HB01 HC08 HD01 KA12                       KA15 KB01 LA02 LA06 LB02                       LD01                 3E093 AA02 AA11 AA14 BB13 BB16                       DD10 EE08 EE13

Claims (8)

[Claims] 1. A beverage container having a structure in which a mouth opening for a mouth is sealed with a lid member, wherein a lid member covers a peripheral portion of a top member around the mouth opening for a mouth, and a first seal. A beverage container, which is provided at a portion other than the portion and is sealed with a second seal portion that is sealed with a higher adhesive strength than the first seal portion. 2. The beverage container according to claim 1, wherein the first seal portion is formed by forming a minute concave portion around the opening portion for a drinking mouth. 3. The lid member is made of a material that curls when peeled off from the first seal portion.
Or the beverage container according to 2. 4. The beverage container according to claim 3, wherein the lid member includes a hygroscopic material layer on the inner surface side of the seal. 5. The beverage container according to claim 3, wherein the lid member includes at least two layers having different heat shrinkage rates, and the heat shrinkage rate on the inner surface side of the seal is small. 6. The beverage container according to claim 1, wherein the lid member includes a material layer having bendability. 7. The beverage container according to claim 6, wherein the material layer having bendability is made of synthetic resin synthetic paper. 8. The beverage container according to claim 1, wherein the lid member has a shape curled at the tip of the first seal portion.