JP2004149163A - Synthetic resin bottle for sparkling liquid - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a low-cost synthetic resin bottle for a sparkling liquid, which prevents spill of jetting foams upon pulling out a stopper and forms creamy foams upon pouring out the liquid. <P>SOLUTION: A plurality of projections or recessions are formed on the interior wall of the mouth of the synthetic resin bottle. The projections or recessions are hemispherical, or vertically or horizontally elongated, or helical and extending longitudinally. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a synthetic resin bottle for foaming liquid which is filled and sealed with a foaming liquid such as beer and sold.
[0002]
[Prior art]
2. Description of the Related Art As a container for a foaming liquid such as beer, a container having a V-shaped concave portion provided on the inner surface of a container such as an aluminum can or bottle has been conventionally known (for example, see Patent Document 1).
Further, as a spout to be fitted to a bottle of a beer bottle, a spout having an inner wall surface formed of unglazed pottery has been conventionally known (for example, see Patent Document 2).
[0003]
[Patent Document 1]
JP-A-5-97149 (FIGS. 1 and 2)
[Patent Document 2]
JP-A-1994-45097 (page 3, FIG. 1)
[0004]
[Problems to be solved by the invention]
However, in the aluminum can or bottle described in Patent Document 1, there is a problem that bubbles are generated even by a slight vibration and the internal pressure is increased, and the bubbles are spilled out at the same time when the can is opened and removed, or the foaming liquid is scattered around.
Since the convex portion on the surface is formed of a paint or the like containing granules, there is a problem that the number of manufacturing steps is increased and the cost is increased.
Moreover, in the thing of patent document 2, since a ceramics is arrange | positioned on the inner wall surface of a spout, there exists a problem that a manufacturing process, the number of parts increase, and it costs, and since it is ceramics, it is easy to be damaged. There was a problem.
[0005]
SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has a low cost, a foaming property that prevents foam from spilling out at the time of plugging, and generates a creamy foam at the time of pouring. An object of the present invention is to provide a synthetic resin bottle for liquid.
[0006]
[Means for Solving the Problems]
The present invention, in order to solve the above-mentioned problem, is a synthetic resin bottle as a synthetic resin bottle for foamable liquid, wherein a large number of convex portions or concave portions are provided on the inner surface of the bottle mouth wall. Adopt a characteristic configuration.
[0007]
As a specific embodiment, the configuration in which the shape of the convex portion or the concave portion is a hemispherical shape, and in another embodiment, the shape of the convex portion or the concave portion is a vertically long or horizontally long shape. Is adopted.
[0008]
As another embodiment, a configuration is adopted in which the shape of the convex portion or the concave portion is a spiral shape extending in the vertical direction.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, a first embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the foamable liquid bottle A of the present invention includes a bottle 1 and a bottle mouth 2, and is molded using PET or another synthetic resin.
[0010]
The bottle 1 is formed into an arbitrary bottle shape by blow molding.
The bottle 2 is provided with a screw 4 on an outer surface 3 of the wall, and a number of hemispherical projections 6 on the inner surface 5 of the bottle at equal intervals in the vertical and horizontal directions as shown in FIG. And are in parallel.
[0011]
The shape of the protrusion may be a vertically long protrusion 7 as shown in FIG. 3 or a horizontally long protrusion 8 as shown in FIG.
Further, the length and width of each convex portion, the interval between the convex portions, and the number per unit area can be set as appropriate.
[0012]
As is well known, the bottle is molded by injection molding, compression molding, etc., forming a cylindrical preform with a bottom, holding the preform in a blow mold, and stretching the preform portion corresponding to the body. Obtained by molding.
At this time, a convex portion having the above shape is formed on the inner surface of the bottle portion of the preform.
[0013]
Next, the function and effect of the present synthetic resin bottle for foamable liquid will be described.
The product of the present invention has a hemispherical convex portion or a vertically long or horizontally long convex portion on the inner surface of the bottle mouth wall which is thinner than the bottle, so that the foaming liquid such as beer which passes through the bottle mouth is convex portion. When the beer is poured out, fine creamy foam is generated, and the beer taste is improved.
In addition, the duration of the foam is prolonged, so that the rise in the temperature of the beer can be suppressed, and a delicious beer can be enjoyed forever.
[0014]
In addition, since the convex portion is provided only on the inner surface of the bottle wall, when the bottle is erected, the liquid does not touch the convex portion, and vibrations occur during movement during distribution and handling at home. Even if the liquid is applied and touches the convex portion, the liquid is touched only in a narrow range, so that the content liquid does not spill over when the lid is opened.
[0015]
In addition, since the convex portion provided on the bottle is easily obtained by injection molding or compression molding, it can be molded by the conventional manufacturing process, and the cost is higher than the manufacturing cost by the conventional molding method. Not even.
[0016]
Next, a second embodiment of the present invention will be described with reference to the drawings.
In this embodiment, the convex portion on the inner surface of the bottle wall is changed to a spiral ridge.
The foamable liquid bottle Aa of the present embodiment is obtained by stretch blow molding using PET, as in the first embodiment, and as shown in FIG. In the bottle opening 11, a screw 13 is screwed on an outer wall 12 of the bottle, and spiral ridges 15 extending in a vertical direction are arranged on the inner wall 14 at equal intervals in a circumferential direction. .
[0017]
The arrangement of the spiral ridges 15 is such that the vertical position is alternately changed in the arrangement shown in FIG.
[0018]
Also in the present embodiment, the content liquid is stirred and foamed by the spiral ridge, and the same operation and effect as in the first embodiment can be obtained.
[0019]
In each of the above embodiments, the convex portion is provided on the inner surface of the bottle wall. However, the concave portion may be provided on the inner surface of the bottle wall.
The effect is no different from that of the case of the convex portion.
[0020]
Further, in each of the above embodiments, at the time of injection molding and compression molding, the height of the convex portion or the depth of the concave portion can be freely adjusted within a range in which the preform can be forcibly removed from the mold, and therefore, depending on the content liquid. Can be adjusted to obtain the required creamy foam.
[0021]
In addition, the convex or concave portion provided in the bottle can be easily obtained by injection molding or compression molding, so that it can be molded in the same manufacturing process as before, and the cost is lower than the conventional molding method. It will not be high.
[0022]
【The invention's effect】
The present invention has the following effects because it is configured as described above.
When the beer is poured, creamy foam is obtained, so that the beer tastes good, the duration of the foam is long, the temperature rise of the beer can be suppressed, and a delicious beer can be enjoyed.
[0023]
Further, since the projections or depressions provided in the bottle can be easily obtained by blow molding, the number of manufacturing steps is small, and the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a partial longitudinal front view of a synthetic resin bottle for a foamable liquid according to a first embodiment of the present invention.
FIG. 2 is a plan view of a bottle mouth.
FIGS. 3A and 3B are explanatory views of another bottle bottle, in which FIG. 3A is a plan view and FIG.
FIGS. 4A and 4B are explanatory views of another bottle bottle, in which FIG. 4A is a plan view and FIG.
FIGS. 5A and 5B are explanatory views of a bottle of a synthetic resin bottle for a foamable liquid according to a second embodiment, wherein FIG. 5A is a plan view, FIG. Is a development view of the inner surface of the bottle wall.
[Explanation of symbols]
A, Aa Bottle for foamable liquid 1, 10 Bottle 2, 11 Bottle 3, 12 Wall outer surface 4, 13 Screw 5, 14 Wall inner surface 6 Hemispherical convex portion 7 Vertically long convex portion 8 Horizontally long convex portion 15 Spiral ridge

Claims (4)

What is claimed is: 1. A synthetic resin bottle for a foamable liquid, comprising: a plurality of convex portions or concave portions provided on an inner surface of a bottle mouth wall. The synthetic resin bottle for foamable liquid according to claim 1, wherein the shape of the convex portion or the concave portion is hemispherical. 2. The synthetic resin bottle for foamable liquid according to claim 1, wherein the shape of the convex portion or the concave portion is vertically long or horizontally long. The synthetic resin bottle for foamable liquid according to claim 1, wherein the shape of the convex portion or the concave portion is a spiral shape extending in the vertical direction.

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