JP3112568B2 - Packaging container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging container.

[0002]

2. Description of the Related Art Conventionally, liquid or fluid beverages such as milk and soft drinks are generally sold in a packaging container made of a packaging material in which the outer and inner surfaces of paper are coated with polyethylene. In addition, foods (flavors) are added to the beverage contained in the packaging container having the above-described configuration in order to enhance the taste of the beverage. That is, fruit-flavored beverages containing no fruit juice or a small amount of natural juice, 10
There are various drinks, such as soft drinks containing fruit juice containing more than 50% natural juice, juice drinks containing more than 50% natural juice, and natural juice drinks. When the flavor is a soft drink containing fruit juice or a fruit juice beverage, an essence is added.

[0003] The above-mentioned emulsified flavor is obtained by dispersing oil as fine particles in water using a suitable emulsifier or stabilizer, and a taste component or a colorant can be added as required. The essence is obtained by dissolving a base obtained by synthesizing various natural fragrances and synthetic fragrances in 40% to 60% of dilute ethyl alcohol, and tinctures, extracts and fruit juice can be added as needed.

[0004] The essence is water-soluble, is added to beverages in the range of 1/500 to 1/1000, and is transparently dissolved and dispersed, so that it is suitable for beverages. Also, in the case of milk drinks, essences such as coffee and orange are added to lacto drinks with enhanced palatability of milk.

[0005]

However, in the above-mentioned conventional beverages, as time passes, food flavors in the beverage contained in the packaging container are adsorbed on the inner wall of the packaging container or permeate the packaging material. When the product is purchased and opened by the buyer, the content of the food flavor is reduced from the beginning of production.

[0006] In particular, in the case of a gable-top type packaging container, since the storage capacity of the beverage is relatively large, after the packaging container is pushed open to open the spout, it is not necessary to drink the beverage only once, In many cases, the spout is repeatedly opened and closed to drink. Therefore, after opening the spout, a considerable amount of food flavor is volatilized in the atmosphere and dissipated. As described above, as a result of the food flavor being adsorbed on the inner wall of the packaging container or dissipating into the atmosphere, the palatability of natural juice and milk is reduced, and sufficient satisfaction cannot be obtained when drinking.

Therefore, if the amount of food flavor added at the time of filling a beverage into a packaging container is increased to make up for the amount that disperses with the passage of time or the amount that dissipates after opening the spout, the fragrance becomes higher than that of natural juice. In addition to giving a sense of incongruity, when a synthetic flavor is used as a food flavor, the safety is reduced by an increased amount.

[0008] The present invention solves the above-mentioned problems of the conventional beverage, and can reduce the amount of food flavor added when the beverage is filled in the packaging container. Alternatively, it is an object of the present invention to provide a packaging container capable of drinking beverages in a state of high palatability even when a long time has elapsed after opening the packaging container.

[0009]

For this purpose, the packaging container of the present invention has an outer layer which forms the outer surface of the packaging container and comes into contact with the atmosphere and an inner layer which comes into contact with the contained beverage. The inner layer is formed of a composite material obtained by mixing a food flavor corresponding to the smell of a beverage with a resin.

[0010]

According to the present invention, the outer surface of the packaging container is formed as described above, and the outer layer has an outer layer that comes into contact with the atmosphere and an inner layer that comes into contact with the contained beverage. It is formed of a composite material in which a food flavor corresponding to the odor is mixed with a resin. Therefore, the food flavor is eluted into the beverage from the inner layer that comes into contact with the beverage to be contained, and is supplemented by the amount absorbed on the inner wall of the packaging container or permeated through the packaging material and dissipated into the atmosphere.

[0011] Further, when filling the packaging container with the beverage, it is not necessary to add a large amount of food flavor to the beverage in advance in anticipation of the amount adsorbed on the inner wall of the packaging container or dissipating in the atmosphere.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a sectional view of a first embodiment of the packaging container of the present invention, and FIG. 2 is a partially cutaway perspective view of the first embodiment of the packaging container of the present invention. In the figure, reference numeral 1 denotes a packaging container, which is formed by processing a packaging material 2 made of a laminate into, for example, a brick shape as shown in FIG. Reference numeral 3 denotes a paper material constituting the support layer of the packaging material 2. In this embodiment, the paper material 3 is used as the support layer.
However, it may be processed into a bottle shape using glass, plastic, or the like, or may be formed using metal or the like.

A metal foil (foil) layer, for example, an aluminum foil layer 5 is coated on the inner surface (inside of the packaging container 1) of the paper material 3 via an adhesive resin layer 4. The aluminum foil layer 5 forms a light and gas barrier for the beverage contained in the packaging container 1 and prevents deterioration of the beverage and dissipation of food flavors.
Further, a fragrance-containing resin layer 6 is coated on the inner surface of the aluminum foil layer 5 (inside of the packaging container 1) with an adhesive resin layer 4 interposed therebetween. The flavor-containing resin layer 6 is obtained by extruding a composite material in which a food flavor corresponding to the smell of a beverage is mixed with a polyethylene resin.

The two adhesive resin layers 4 are provided to improve the adhesiveness between the paper material 3 and the aluminum foil layer 5 and between the aluminum foil layer 5 and the fragrance-containing resin layer 6. On the other hand, a polyethylene resin layer 7 is coated on the outer surface of the paper material 3 (outer surface of the packaging container 1). By the way, when pouring a beverage from the packaging container 1 containing a beverage such as a soft drink or milk,
For example, the spout is opened by piercing the sharp portion of the straw into the sealing portion formed in the packaging container 1, but a long time has elapsed since the beverage was filled in the packaging container 1. When the spout is opened, a considerable portion of the food flavor is adsorbed on the inner wall of the packaging container 1 or permeates through the packaging material 2 and dissipates into the atmosphere.

Further, a gable-top type packaging container 1
In the case of, after the roof-like portion of the packaging container 1 is pushed open and the spout is opened, the spout is repeatedly opened and closed, so that a considerable amount of food flavor is volatilized in the atmosphere and dissipated. . In the packaging container 1 having the above-described configuration, the food flavor is eluted into the beverage from the flavor-containing resin layer 6 that comes into contact with the beverage in the packaging container 1, and is adsorbed on the inner wall of the packaging container 1 or permeates through the packaging material 2 to be in the atmosphere. Can be replenished, and the palatability can be enhanced.

When filling the packaging container 1 with a beverage,
It is not necessary to preliminarily add a large amount of food flavor to the beverage in anticipation of the amount adsorbed on the inner wall of the packaging container 1 or dissipating in the atmosphere. To that extent, the amount of food flavor added in the beverage can be reduced, and safety is improved. next,
A second embodiment of the packaging container 1 (FIG. 2) of the present invention will be described.

FIG. 3 is a sectional view of a second embodiment of the packaging container of the present invention. In the figure, 2 is a packaging material, 3 is a paper material, 4 is an adhesive resin layer, 5 is an aluminum foil layer, 7 is a polyethylene resin layer, and 8 is a fragrance-containing resin layer. When the beverage contained in the packaging container 1 is juice or the like, the polyethylene resin of the flavor-containing resin layer 6 as shown in FIG. 1 may be oxidized by the juice or the like. Therefore, in this embodiment, the flavor-containing resin layer 8 is formed by extruding a composite material in which a food flavor corresponding to the smell of a beverage is mixed with polyethylene terephthalate (PFT) resin. The inner surface of the aluminum foil layer 5 is covered via the adhesive resin layer 4.

In this case, since the polyethylene terephthalate resin is resistant to acidic substances such as juice, the quality of the packaging material 2 does not deteriorate even after a long time. It should be noted that the present invention is not limited to the above-described embodiments, but can be variously modified based on the gist of the present invention, and they are not excluded from the scope of the present invention.

[0019]

As described above in detail, according to the present invention, the packaging container has an outer layer that forms the outer surface and contacts the atmosphere, and an inner layer that contacts the contained beverage, The inner layer is formed of a composite material in which a food flavor corresponding to the smell of a beverage is mixed with a resin.

The food flavor is eluted into the beverage from the inner layer which comes into contact with the beverage, and replenishes the amount absorbed by the inner wall of the packaging container or permeated through the packaging material and dissipated into the atmosphere. Therefore, the preference of the beverage can be improved. In addition, when filling the packaging container with the beverage, it is not necessary to add a large amount of food flavor to the beverage in advance in anticipation of the amount of the flavor being absorbed on the inner wall of the packaging container or dissipating in the atmosphere. By that amount, the amount of food flavor added in the beverage can be reduced,
Safety is improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a first embodiment of a packaging container of the present invention.

FIG. 2 is a partially cutaway perspective view of a first embodiment of the packaging container of the present invention.

FIG. 3 is a sectional view of a second embodiment of the packaging container of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Packaging container 6,8 Fragrance containing resin layer 7 Polyethylene resin layer

Claims (1)

(57) [Claims] 1. A packaging container for accommodating a beverage therein, comprising: (a) an outer layer which forms an exterior surface of the packaging container and comes into contact with the atmosphere; and (b) an inner layer which comes into contact with the contained beverage. (C) The packaging container, wherein the inner layer is formed of a composite material in which a food flavor corresponding to the smell of a beverage is mixed with a resin.