KR20090104108A - Bottle with narrow portion - Google Patents

Abstract

A bottle with a narrow portion, having high ability of absorbing depressurization, high strength, and enhanced esthetic appearance. The bottle has a narrow portion at at least a portion of its side face, and the narrow portion is formed by a curved surface. At least one panel for absorbing depressurization is provided at the narrow portion, and the width of the panel continuously varies from one end of the panel to the other end.

Description

Bottle shaped bottle {BOTTLE WITH NARROW PORTION}

FIELD OF THE INVENTION The present invention relates to bottle-shaped bottles, in particular with a panel that absorbs reduced pressure due to a volume reduction of liquid, in connection with the bottle-shaped bottle.

Background Art Conventionally, various shapes have been proposed as bottles for containing beverages. For example, there is a so-called narrow bottle in which the diameter of the middle region in the vertical direction of the bottle is reduced. The bottle is not only beautiful to look at, but also features that the bottle can be surely held when the user grabs the bottle.

Resin containers such as beverages are subjected to temperature changes such as cooling after the beverage is accommodated. At that time, the interior may be decompressed due to a decrease in the volume of the liquid therein, resulting in deformation of the container. In order to prevent this, the panel for pressure reduction absorption may be formed in the surface of a bottle. This panel is a bottle wall of the structure generally recessed inward from the surface of a bottle. As panel form, various things are used, but the structure which combined polygons etc. is used a lot generally. In addition, the panel is not only intended for absorbing the reduced pressure, but can also improve the strength of the bottle itself while reducing the amount of material to be used. As an example, a combination of triangular panels is disclosed (see Patent Document 1).

Moreover, as an example of forming a panel in a bottle side surface, forming a rectangular panel extended in an up-down direction in a bottle side surface is disclosed (refer patent document 2). In this example, in order to make it easier to see the characters printed on the surface of the label formed around the bottle, or to not change the image of the design such as the pattern printed on the surface of the label, the number of panels of the body of the bottle is increased so as to form a polygonal shape. I am doing it.

Moreover, as another example which forms a panel in a bottle side surface, while forming a modified rectangular panel in a bottle side surface, forming a horizontal rib near the middle of the up-down direction of a bottle is disclosed (refer patent document 3). In this example, it is disclosed that the deformation of the container can be suppressed by the stiffness improving effect due to the lateral ribs and the pillar portion formed between the panels.

Moreover, in order to maintain the external appearance of a bottle on a smooth curved surface, and to maintain rigidity without forming a panel on the surface, the bottle which provided the step | step in which a mountain part and a curved part are alternately arranged in the circumferential direction is formed. Is disclosed (see Patent Document 4).

Patent Document 1: Japanese Unexamined Patent Publication No. 2002-370721

Patent Document 2: Japanese Patent Application Laid-Open No. 2001-206331

Patent Document 3: Japanese Unexamined Patent Publication No. 2002-332022

Patent Document 4: Japanese Unexamined Patent Publication No. 2003-40230

Disclosure of Invention

Problems to be Solved by the Invention

However, in the bottle of the said narrow shape, there existed the following problems. In other words, although the surface of the bottle is curved gently, when the panel is formed by combining polygons on the surface of the bottle formed as such a curved surface, deformation of the container due to decompression is concentrated locally. It may cause a large deformation. Moreover, when manufacturing the bottle which has a narrow part by material, such as polyethylene terephthalate (PET), the thickness of the material of a narrow part may become thin due to a manufacturing method.

In addition, when a panel in which a plurality of polygons as disclosed in Citation Document 1 is applied to a concave-shaped bottle having a lateral surface formed of a continuous smooth curved surface is applied, the aesthetics of the bottle itself is broken and the person who holds the bottle It is also conceivable to feel discomfort due to the mismatch between the curved surface and the polygon.

Moreover, in the bottle as disclosed in Cited Reference 2, simply increasing the number of surfaces of the body portion of the bottle reduces the area of the surface having the pressure-reduction absorbing function inside the bottle, and thus, a sufficient function cannot be obtained. For this reason, irregular decompression occurs or rigidity is reduced by narrowing the width of the concave or convex ribs formed for the purpose of strength reinforcement disposed in the body portion.

In addition, in the bottle disclosed in Reference Document 3, the annular groove continuous in the circumferential direction, which is formed for strength reinforcement around the pressure-sensitive absorbing panel, is effective in preventing transverse external force to the body portion and deformation around the pressure-sensitive absorbing panel. However, the vertical load strength, which is the load in the height direction of the bottle, is adversely affected and often causes a drop in strength.

In addition, in the bottle disclosed in Cited Document 4, rigidity is secured by using a step formed of a simple ridge and a bent portion, and thus cannot be applied to a bottle having a large size.

Means to solve the problem

An object of the present invention is to provide a bottle of a narrow shape that can solve the above problems. In order to achieve this object, the present invention is a bottle of a convex shape having a concave portion formed in a curved surface on at least a portion of the side of the bottle, at least one condensed portion is formed with at least one panel for absorbing pressure reduction, the width of the panel Employs a configuration in which the panel is continuously changed from one end to the other end of the panel.

Moreover, the said panel employ | adopts the structure that the width | variety of the narrowest part of the said narrow part is wider than the width of another part.

Moreover, the horizontal cross section of the said panel employ | adopts the structure which recessed toward the inside of a bottle rather than the other part of the said bottle-shaped side surface.

Moreover, the structure that the horizontal cross section of the said panel is curved is employ | adopted.

Moreover, the said panel employ | adopts the structure which is formed continuously in the vicinity of the upper and lower ends of the said narrow bottle.

Moreover, at least two said panels are formed, and the said panel is employ | adopted that it is arrange | positioned at equal intervals along the circumferential direction of the said conical bottle.

In addition, the number of the said panel is employ | adopted as eight.

Effects of the Invention

According to the present invention, in a convex bottle having a concave portion formed in a curved surface on at least a part of the side surface of the bottle, it is possible to realize a bottle having high pressure reduction ability while ensuring the strength of the bottle itself. Moreover, the thickness reduction of the material of the constricted part can be suppressed. In addition, while maintaining the beauty of the disease beautifully, it is possible to realize a disease in which the person with the disease does not feel discomfort.

BRIEF DESCRIPTION OF THE DRAWINGS The front view of the bottle of the convex shape which concerns on one Embodiment of this invention.

FIG. 2 is a bottle disclosed in FIG. 1, FIG. 2A shows a top view, FIG. 2B shows a bottom view, and FIG. 2C shows a cross-sectional view taken along the line AA of FIG. 1. Indicates.

FIG. 3 shows a perspective view shaded to the convexly shaped bottle disclosed in FIG. 1. FIG.

4 is a table showing the thickness of each portion of a conventional bottle without a panel.

It is a table which shows the thickness of each part of the conical bottle of this invention.

Explanation of the sign

1 bottle shaped

11 ridges

21 sidewalls

31 panels

41 Lid Fitting

41a male thread

Best Mode for Carrying Out the Invention

Next, one Embodiment of this invention is described, referring drawings.

[Overview]

The convex bottle 1 which concerns on one Embodiment of this invention is a circumferential foil type which has the concave part 11 formed in the curved surface at the middle part of the up-down direction of a bottle as at least one part of a bottle side surface, In this embodiment, The concave portion 11 is formed at a position slightly above the center in the vertical direction. The side surface of the concave-shaped bottle 1 consists of the side wall 21 which generally forms a circular cross section, and the pressure-sensitive absorption panel 31 formed in the at least constricted part. Moreover, the lid engaging part 41 for engaging a lid (not shown) is formed in the upper end of the bottle 1 of a narrow shape. In addition, the conical bottle 1 of this embodiment is what is called a PET bottle which consists of a transparent polyethylene terephthalate material.

[Side wall]

The side wall 21 is a wall member continuous from the upper end to the lower end of the convex bottle 1, and when viewed from a horizontal cross section, as shown in FIG. It has a circular cross section. As for the diameter of the circular cross section of each part, the concave part 11 is the minimum, the upper part of the concave-shaped bottle 1 is the middle size, and the lower part is the maximum. Since the middle part of the up-down direction becomes the concave part 11, by making this concave part 11 hold | maintain, the concave bottle 1 can be hold | maintained reliably. In addition, when referring to a "constricted part" here, a minimum diameter part is included and the upper and lower vicinity areas are also included. For this reason, it should be understood that the present invention can also be applied to a bottle in which only a concave portion is formed into a curved surface, and the other portion is formed by a combination of planes.

[panel]

Moreover, the some panel 31 is formed in the side surface of the bottle 1 of a narrow shape. This panel 31 has the widest width of the narrowest (smallest diameter) part of the concave part 11, and the narrowest, so-called fold of one end and the other end (near both ends in the vertical direction in the case of a standing bottle). The panel is shaped, and the width is continuously changed. As shown in FIG. 2 (C) and FIG. 3, the cross-sectional shape of the panel 31 becomes a shape which recessed in curved shape toward the inside. Moreover, the depth of the panel 31 is comprised so that the both ends of an up-down direction may be shallowest so that the concave part 11 may become deepest (about 3 mm). 3 is a perspective view of the bottle of the concave shape, and each line shown on the surface of the bottle is for understanding the three-dimensional shape. The panel 31 in this embodiment is formed continuously in the vicinity of the upper and lower ends of the concave-shaped bottle 1. However, the present invention is not limited to this, but the panel 31 may be formed only in the concave portion 11, and the length of the panel 31 is set so that the concave portion 11 is not reached to the vicinity of the upper and lower ends of the bottle. You may also

In the conical bottle 1 according to the present embodiment, the number of the panels 31 is eight. This is so that the deformation of the bottle by decompression can be reliably absorbed while ensuring the strength of the bottle itself. However, the present invention is not limited to this and may be one to seven or nine or more. However, it is necessary to adjust the width of each panel 31 according to the number of panels 31. In addition, the convex bottle 1 which concerns on this embodiment is for 500 ml mentioned above, and an example of a specific dimension is demonstrated, the height is about 220 mm, and the height of the minimum diameter part of the convex part 11 is about from the lower end. The position is 125 mm. Moreover, the maximum width of a panel exists in the vicinity of the minimum diameter part of the narrow part 11, and the width is about 15.8 mm. Moreover, the minimum diameter of the narrow part shown by the A-A line in FIG. 1 is about 53.5 mm, the diameter of the upper part shown by the B-B line is about 63 mm, and the diameter of the lower part shown by the C-C line is about 68.5 mm.

[Lid fastening part]

The upper end of the bottle 1 of the narrow shape is a lid engaging portion 41. The lid engaging portion 41 is provided with a male screw portion 41a, and is engaged with the female screw portion formed on the inner surface of the lid (not shown). However, the male screw portion 41a is not essential to the present invention. For example, the male screw portion 41a may be formed as a simple cylindrical portion, and may have a structure in which a lid is pushed in and sealed.

[Thickness of each bottle]

The convex bottle 1 which concerns on this invention is shape | molded by the method called blow molding, for example. This holds | maintains a preform in the mold which determines the shape of a bottle, and presses a material into a mold by introducing compressed air inward. Due to such a method, in the molding of the concave bottle 1, the thickness of the concave portion may be thin. For example, in the case of a convex bottle having a smooth side without a panel formed thereon, as shown in FIG. 4, the thickness of the concave portion is about 0.35 mm to about 0.37 mm, while the thickness of the concave portion is 0.29. reduced to mm.

5 is a table which shows the thickness of each part of the conical bottle 1 which has the panel 31. FIG. As shown in this table, the thickness of the minimum diameter portion of the concave portion 11 is 0.27 mm, and is thicker than the thickness (0.23 to 0.24 mm) of the upper and lower regions. This is because unevenness is formed in the mold for forming the panel 31, and this is due to the effect of preventing the increase in thickness caused by the unevenness. Thus, by forming a suitable panel, the thickness of the concave part 11 is increased compared with the bottle which does not have a panel, and the effect as if a column was formed in the height direction of the concave-shaped bottle 1 arises. Therefore, the longitudinal compressive strength of the concave portion 11 can be increased.

[Method of filling contents]

The bottle 1 of the narrow shape is filled with a beverage as an example. Beverages are different in filling method according to their kind, so they are briefly explained. Specifically, three types of 1) hot pack, 2) room temperature sterile filling, and 3) cold filling are common.

A hot pack is a method of filling a bottle at a temperature considerably higher than normal temperature (for example, 85 degreeC). This method is used for sports drinks, juice drinks, and the like. In addition, normal temperature aseptic filling is a method of filling a bottle with a beverage at the temperature of about 25 degreeC. This method is used for tea, water, milky coffee, black tea and the like. In addition, cold filling is a method of filling at temperature lower than normal temperature, and is used for filling of carbonated drinks. Herein, the present invention can be applied to 1) hot pack and 2) room temperature sterile filling in each of the above filling methods.

[Decompression occurs]

After the beverage is filled in the bottle, the inside of the bottle is in a reduced pressure state due to the following various causes. For example, in the case of the above-described sterile filling at room temperature, the beverage is filled in a bottle at a temperature of about 25 ° C., but is actually cooled to about 5 ° C. and displayed at a store. This change in temperature causes the liquid beverage to shrink. The shrinkage amount is, for example, about 3.7 ml in the case of a 500 ml bottle. As a result, the inside of the bottle is in a reduced pressure state. In addition, a certain amount of gas remains at the top of the bottle even after the beverage is filled. Oxygen is also contained in this gas, and when the oxygen is dissolved in the beverage by cooling, a reduced pressure corresponding to an amount of about 2 ml is generated. In addition, in the case of a PET bottle filled with a beverage, the water penetrates the bottle with the passage of time in the stock period. The amount is about 0.1% per month of the total capacity. Therefore, in the case of 500 ml of bottle, moisture of about 0.5 ml / month is lost. In this state, if stored for 8 months, for example, up to about 4 ml of water will penetrate the bottle.

When the respective decompression factors as described above are added to each other, a decompression amount corresponding to less than about 10 ml occurs in volume. For this reason, a 500 ml bottle is not deformed, for example, and in order to maintain the shape from the beginning, the pressure reduction ability of about 10 ml is required as a minimum. In the concave-shaped bottle which does not have a pressure-sensitive absorption panel, the container is greatly deformed by the pressure reduction. Specifically, a circular cross section may be crushed, resulting in a cross-sectional shape close to an ellipse. Such modifications significantly reduce the product value of the distribution process.

[Action]

Next, when the action | action of the conical bottle 1 of this embodiment with respect to the said pressure reduction is demonstrated, in this invention, a large pressure reduction absorbing ability can be obtained by forming the panel 31 of ship shape. Specifically, the panel 31 is slightly concave to the inside of the concave bottle 1 so as to absorb the reduced pressure. This reliably absorbs the decrease in the beverage volume and does not affect deformation in other portions. In particular, the panel 31 of this embodiment extends to the vicinity of the upper and lower ends of the convex bottle, and the movement of the panel 31 in the bottle inner direction is performed relatively freely. For this reason, the overall shape of the convex bottle 1 maintains the original shape of filling regardless of the internal pressure state.

In addition, in the conical bottle 1 according to the present embodiment, since the panel 31 has a smooth boat shape that is continuously changed with respect to the width and depth, the stress due to the decompression is not concentrated locally. . Furthermore, since the panel 31 is continuously formed to the vicinity of the both ends of the up-and-down direction of the concave bottle 1, this panel 31 exhibits the same function as a pillar, and the concave bottle 1 Sufficient strength is also obtained for the compressive force in the vertical direction.

Furthermore, by using the pear-shaped panel 31 whose width and depth change smoothly in correspondence with the narrow part in the narrow bottle 1 having the smooth narrow part 11, the viewer can feel aesthetics. Moreover, it has the characteristic that it does not make a person feel a sense of incongruity even in the person who caught the bottle 1 of the actually narrow shape.

In addition, in this embodiment, although it demonstrates based on the concave-shaped bottle 1 which has one point of the concave part 11 in the up-down middle area | region of the conical-shaped bottle 1, this invention is limited to this. It is not. For example, it can apply also to the bottle of the shape of which the constriction part formed the two points. Moreover, in this embodiment, although the concave part 11 is formed substantially horizontally along the circumferential direction of the concave-shaped bottle 1, this invention is not limited to this, For example, it inclines with respect to a longitudinal direction. It may be so formed as to form a so-called spiral on the bottle side surface.

The present invention can be used in a structure such as a bottle container for accommodating a liquid or the like.

Claims (7)

A bottle of a convex shape having a concave portion formed in a curved surface on at least a portion of the bottle side, At least one panel for absorbing pressure reduction is formed in at least the concave portion, Wherein the width of the panel varies continuously from one end of the panel to the other end. The method of claim 1, The panel has a narrow shape bottle, characterized in that the width of the narrowest portion of the narrow portion is wider than the width of the other portion. The method according to claim 1 or 2, Wherein the horizontal cross section of the panel is concave toward the inside of the bottle than the other part of the side of the bottle. The method according to any one of claims 1 to 3, A bottle of a convex shape, wherein the horizontal cross section of the panel is curved. The method according to any one of claims 1 to 4, The panel is a bottle of a concave shape, characterized in that the panel is formed in succession to both the upper and lower ends of the concave-shaped bottle. The method according to any one of claims 1 to 5, At least two said panel is formed, The said bottle is a bottle of a convex shape characterized by being arrange | positioned at equal intervals along the circumferential direction of the said convex bottle. The method of claim 6, Wherein the number of panels is eight.

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