JP2006123996A - Plastic bottle container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a round bottle container suitable for selling by an automatic vending machine, the bottle being designed such that a sufficient area for a half label is assured by providing a half label area that has the same size as that of a rectangular bottle container without remarkably degrading decompression absorption performance. <P>SOLUTION: A barrel 3 is divided into a substantially cylindrical section 32 and a shoulder 31 narrowing from the upper end of the cylindrical section 32 so as to be continuous with a mouth 2. Decompression absorption panels 6a and 6b are formed on the cylindrical section 32 (middle barrel 321 and lower barrel 322) except the shoulder 31. A large area for the panels is taken to improve decomposition absorption performance. A label is attached to the middle barrel 321 or lower barrel 322 taking a large area on the side faces of the container. This provides a half label attaching face 9 that is the same in size as a conventional rectangular bottle, and assures a sufficient area for the half label. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a plastic bottle container in which a half-labeled area is equivalent to a square bottle container in a round bottle container excellent in vendor aptitude, and a common impression can be obtained with the square bottle container.

  For example, plastic bottle containers made of synthetic resin such as polyethylene terephthalate are widely used as bottle containers for drinks such as carbonated drinks such as cola and cider, fruit juice drinks, mineral water, coffee drinks, and various teas. (For example, patent document 1 etc.).

In recent years, such plastic bottle containers are rapidly spreading and penetrating, and with this wide spread, the sales forms of products using plastic bottle containers are diversifying.
In particular, in the case of a beverage bottle container having a capacity of about 500 ml, in addition to over-the-counter sales, it is increasingly used for sales by vending machines.

This type of plastic bottle container has two types, a prismatic square bottle container 101a as shown in FIG. 6 (a) and a cylindrical round bottle container 101b as shown in FIG. 6 (b). Although the square bottle container 101a has a high accommodation efficiency and is suitable for over-the-counter sales, the square bottle container 101a is a vending machine that is continuously supplied with a large number of horizontally placed bottle containers stacked one above the other. As a result, the prismatic container shape has a problem that defective discharge tends to occur.
Furthermore, the square bottle container 101a is prone to dents at the corners when discharged (dropped supply) to the vending machine outlet, and in particular, dents at the shoulder corners. is there.
For this reason, the rectangular bottle container 101a is unsuitable for sale by a vending machine, and a round bottle container excellent in vendor suitability that does not have such a problem is preferred for sale by a vending machine (for example, Patent Document 2).

JP 11-321839 A JP 2000-142654 A

By the way, this kind of bottle container is provided with a label 109 on which a product name, a pattern, and the like are printed on the body portion 103 so as to differentiate the product. Such a label 109 is provided by affixing a film material such as a shrink film or a stretch film to the body portion 103. In particular, in the square bottle container 101a, a so-called half label that covers almost the upper half of the body portion 103 is provided. Are often provided (see FIG. 6).
This is because when the half label is provided, in the case of the square bottle container 101a, in order to ensure the rigidity of the container, the horizontal bead 105 formed along the circumferential direction at a substantially central position in the height direction of the container body. This is because the lower end side of the label 109 can be hooked on the horizontal bead 105 to prevent it from coming off, which is suitable for providing a half label.

The half label has the advantage that the amount of film material used can be halved compared to the full label covering the entire surface of the body 103, and provided on the upper side of the container so that the lower side of the container is not hidden by the label, There is also an advantage that the remaining amount of contents is easy to understand.
For this reason, it is strongly desired that a round bottle container be provided with a half label similar to that of a square bottle container in a situation where sales forms by vending machines are expected to increase in the future.

However, in the conventional round bottle container 101b as shown in FIG. 6B, the similar horizontal bead 105 secures an area where the reduced pressure absorption panel 106 for absorbing the decrease in internal pressure is formed. In order to obtain a desired reduced-pressure absorption performance, it is usually formed at a position above the body portion 103.
For this reason, when this lateral bead 105 is used to prevent the label 109 from coming off, there is a problem that a half label can be provided only in a relatively narrow range near the shoulder portion. In a small round bottle container, there is a problem that a range in which a half label can be provided is extremely narrow.

On the other hand, Patent Document 2 describes that an intermediate body portion is provided between an upper body portion and a lower body portion, and a label surrounding the entire intermediate body portion is provided.
However, it has been pointed out that when a label is provided on the intermediate barrel located in the center of the barrel, the impression when compared with a conventional product is greatly different. Furthermore, when increasing the proportion of the intermediate body portion in an attempt to increase the area where the label is provided, the reduced pressure absorption panel formed on the upper body portion and the lower body portion becomes narrow and the reduced pressure absorption performance is insufficient. If the reduced pressure absorption panel is to be provided with priority given to the reduced pressure absorption performance, the proportion occupied by the intermediate body portion is reduced, and the area for providing the label is reduced.
In addition, the intermediate body has a contour shape that protrudes outward to withstand decompression, but in particular, it is used for a long period of time in a high temperature environment, such as when used for warming sales in vending machines. It has also been pointed out that when placed underneath, deformation such as distortion to an ellipse or dent is likely to occur.

  The present invention has been proposed in order to solve the problems of the conventional techniques as described above, and in a round bottle container suitable for sale in a vending machine, without significantly impairing the vacuum absorption performance, An object of the present invention is to provide a bottle container capable of securing a sufficient area for applying a half label by making the area capable of applying a half label equal to that of a square bottle container.

  The plastic bottle container according to the present invention is a plastic bottle container having a mouth portion, a body portion, and a bottom portion, and the body portion is squeezed from a substantially cylindrical tubular portion and an upper end of the tubular portion. The cylindrical portion is divided into a middle body portion and a lower body portion by a lateral bead formed along a circumferential direction. Both the upper part and the lower body part are provided with a reduced pressure absorption panel.

By adopting such a configuration, it is possible to increase the area of the middle body part and the lower body part on the side surface of the container without significantly impairing the decompression absorption performance of the container. By using the horizontal bead formed at the boundary to prevent the label from coming off and attaching the label to the middle body part or the lower body part, the range in which the half label is attached can be made equal to that of the square bottle.
At this time, it is preferable that the ratio of the length of the cylindrical portion to the length of the body portion in the height direction is 0.70 to 0.85, and the length in the height direction of the middle body portion is The ratio of the lower body portion to the length in the height direction is preferably 0.8 to 1.2.

  In the plastic bottle container according to the present invention, the middle body part or the lower body part can be a half label mounting surface, and at least a part of the shoulder part and the middle body part are a half label mounting surface. By doing so, the range set as a half label mounting surface can be made still larger.

In the plastic bottle container according to the present invention, a plurality of vertically elongated vacuum absorption panels are formed in the height direction along the circumferential direction of the middle body portion and the lower body portion, and the adjacent vacuum pressure absorption panels It can be set as the structure by which the pillar part is formed between. At this time, the column portion may be inclined spirally.
By forming the column portion to be inclined in a spiral shape, it becomes easy to deform so that the body portion is twisted in the circumferential direction. The performance can be further improved.

  Further, in order to effectively prevent deformation of the container due to an impact when contacting the stopper in the vending machine, a column portion formed on the middle body portion and a column portion formed on the lower body portion It is also possible to shift the phase along the circumferential direction so that the column part always abuts against the stopper.

  Such a plastic bottle container according to the present invention is preferably used for sale in a vending machine, and in particular, has an aspect in which the reduced pressure absorption performance is further improved by forming the column part in a spiral shape. Can also be suitably used for heated sales in vending machines.

The plastic bottle container according to the present invention as described above divides the body part into a substantially cylindrical tubular part and a shoulder part that is squeezed from the upper end of the tubular part and continues to the mouth part, except for the shoulder part. The reduced pressure absorption can be improved by providing a reduced pressure absorption panel on the cylindrical portion (the middle body portion and the lower body portion) formed in a cylindrical shape and increasing the area thereof.
As a result, based on the design of the conventional round bottle container, if a horizontal bead along the circumferential direction is formed in the center of the container body in the height direction, like the square bottle container, the amount of vacuum absorption is reduced. Even in round bottle containers that have been said to be insufficient and it is difficult to secure a sufficient area for half-labeling, they are formed along the circumferential direction without significantly impairing vacuum absorption performance. The horizontal bead can divide the body part into the middle body part and the lower body part, and can increase the area of the middle body part and the lower body part on the container side surface.
This allows the half label to be attached by attaching the label to the middle or lower body using the lateral bead formed at the boundary between the middle and lower body parts to prevent the label from coming off. Is equivalent to a square bottle, and although it is a round bottle, it can give the same impression as a square bottle.

Hereinafter, a preferred embodiment of a plastic bottle container according to the present invention will be described with reference to the drawings.
FIG. 1 is a front view schematically showing an embodiment of a plastic bottle container according to the present invention.

A container 1 shown in FIG. 1 includes a mouth 2, a body 3, and a bottom 4. The trunk portion 3 includes a cylindrical portion 32 formed in a cylindrical shape having substantially the same diameter, and a shoulder portion 31 that is squeezed from the upper end of the cylindrical portion 32 and continues to the mouth portion 2. The cylindrical part 32 is divided into an intermediate body part 321 and a lower body part 322 by a horizontal bead 5 b formed along the circumferential direction of the container 1.
Further, in the illustrated example, the horizontal beads 5 a and 5 c extend along the circumferential direction of the container 1 at the boundary between the shoulder portion 31 and the cylindrical portion 32 and the boundary between the cylindrical portion 32 and the bottom portion 4, respectively. Is formed.

  A rib portion 7a is formed on the shoulder 31 side along the horizontal bead 5a, and a rib portion 7b is formed on the middle body portion 321 side. Similarly, a rib portion 7c is formed on the middle body portion 321 side along the horizontal bead 5b, a rib portion 7d is formed on the lower body portion 322 side, and a rib portion 7e is formed on the lower body portion 322 side along the horizontal bead 5c. Each is formed.

The middle body portion 321 is defined by rib portions 7b and 7c and a column portion 8a that functions as a columnar structural portion, and a plurality of vertically elongated vacuum absorption panels 6a are formed along the circumferential direction in the height direction. Has been. A plurality of similar reduced pressure absorption panels 6b defined by the rib portions 7d and 7e and the column portion 8b are also formed in the lower body portion 322.
These reduced pressure absorption panels 6a and 6b are gently bent inward of the container 1 to absorb the pressure decrease when the internal pressure of the container 1 decreases. And the lower body part 322 is formed with an 8-sided vacuum absorption panel.

In the present embodiment, the specific shapes of the reduced pressure absorption panels 6a and 6b are not limited to the rectangular shape as shown in the figure, and those having a vertically long shape such as an elliptical shape or a track shape are applied. it can. Moreover, the number of surfaces of the reduced pressure absorption panels 6a and 6b is not limited to eight, and can be set as appropriate according to the required reduced pressure absorption performance.
Here, the height direction means a direction along a direction orthogonal to the horizontal plane when the container 1 is placed on the horizontal plane with the mouth portion 2 facing up.

Although the present embodiment can be implemented with a plastic bottle container having a volume of about 500 to 1500 ml, it is often used for a relatively small plastic bottle container with a volume of about 200 to 500 ml, which is often used for sales in a vending machine. It is preferably applied.
The container 1 shown in the figure is an example of a container having a volume of 500 ml, which is often used for sales in a vending machine, and the dimensions thereof are a height H of 205.58 mm and a maximum diameter φ of the body 3 of 68.0 mm. It is.
Further, the height direction of the length of the shoulder portion 31 _{h 1} (length from just below the mouth portion 2 to the center line _{C 1} of the lateral bead 5a) is 37.5 mm, the height direction of the middle trunk portion 321 length is (the length between the center line _{C 2} of the center line _{C 1} and the lateral bead 5b of the lateral bead 5a) _{h 2} is 62.0Mm, in the height direction of the lower body portion 322 length (the lateral bead 5b length) _{h 3} between the center line _{C 2} and the lateral bead 5c centerline _{C 3} of is 64.0 mm, the height direction of the length of the bottom portion 4 (the horizontal bead 5c from the center line _{C 3} of the container 1 The length to the bottom surface) h ₄ is 16.5 mm.

  The specific dimensions of the container 1 are appropriately set in consideration of the container characteristics such as the vacuum absorption performance required for the container 1 and the design of the container 1, but the container 1 filled with the contents is automatically selected. When continuously supplied in the vending machine, as will be described later, the side surface of the container 1 comes into contact with the stopper S (see FIG. 2) and supports the container 1. In order to effectively avoid deformation of the container 1 due to an impact at this time, it is preferable to design the container 1 so that the rib portions 7a, 7b, 7c, 7d, and 7e are in contact with the stopper S in a well-balanced manner. .

In particular, the stopper S is usually mounted with a spacing T of about 20 mm from the side wall surface (hereinafter referred to as “supply path side wall surface”) W of the bottom part 4 of the container 1 of the passage to which the container 1 is supplied in the vending machine. Therefore, it is preferable to design the position where the rib portion 7e closest to the bottom portion 4 is provided in consideration of such a mounting position of the stopper S.
Specifically, the length h5 from the bottom surface of the container 1 to the center line C ₅ of the rib portion 7e, interval T from the supply passage side wall W to lower side in the figure of the edge of the stopper S (e.g., 20 mm) It is preferable to make it longer.

In addition, it is preferable that the distance h6 between the rib portion 7a located at the uppermost position of the container and the rib 7e (the length between the center lines of both ribs 7a and 7e) is designed in consideration of the length of the stopper S. for example, the length of the stopper S for use in bottle volume 500ml are the normally about 150 mm, in this case, the length between the center line _{C 5} of the center line _{C 6} and the rib portion 7e of the rib 7a The length h6 is preferably within 150 mm.

  By the way, in general, in a so-called round bottle container having a cylindrical container shape, the lateral beads are provided at the boundary between the shoulder part and the cylindrical part and the boundary between the cylindrical part and the bottom part. A vacuum absorbing panel is provided in the part. If the vacuum absorption panel is divided into upper and lower parts by a new horizontal bead, the horizontal bead itself does not have the vacuum absorption function, and as a result, the effective area of the vacuum absorption panel decreases and the stress generated as the internal pressure decreases. When this occurs, stress concentrates on the horizontal beads, and the portion where the horizontal beads having a circular cross section are provided is deformed into an elliptical cross section. Then, following the deformation of the horizontal bead, the panel surface is distorted, and the original reduced pressure absorption performance cannot be obtained.

  For this reason, in the conventional round bottle container as shown in FIG. 6 (b), just like the case of the square bottle container, the horizontal bead along the circumferential direction is located at the approximate center of the container body in the height direction. However, it has been difficult to secure a sufficient area for applying a half label because the amount of absorption under reduced pressure is insufficient.

On the other hand, as in the present embodiment, if the body portion 3 is configured by the substantially cylindrical tubular portion 32 and the shoulder portion 31 that is squeezed from the upper end of the tubular portion 32 and continues to the mouth portion 2, Utilizing the cylindrical part (cylindrical part 32) suitable for effectively functioning the reduced pressure absorption panel, and providing the reduced pressure absorption panels 6a and 6b here, the reduced pressure absorption performance is improved. Can do.
At this time, in order to obtain sufficient decompression absorption performance, the length in the height direction of the cylindrical portion 32 (the middle barrel portion 321 and the lower barrel portion 322) occupying the length (h1 + h2 + h3) of the barrel portion 3 in the height direction. The ratio (h2 + h3) ((h2 + h3) / (h1 + h2 + h3)) is preferably 0.70 to 0.85, particularly preferably 0.72 to 0.82. In the example shown in FIG. 0.77.

As described above, according to the present embodiment, the body portion 3 is divided into the substantially cylindrical tubular portion 32 and the shoulder portion 31 that is squeezed from the upper end of the tubular portion 32 and continues to the mouth portion 2. The reduced pressure absorption panels 6a and 6b are provided on the cylindrical portion 32 (the middle barrel portion 321 and the lower barrel portion 322) formed in a substantially cylindrical shape excluding the portion 31, and the reduced pressure absorption is improved by increasing the area. be able to.
As a result, it is possible to compensate for the reduction in the vacuum absorption performance caused by the division of the vacuum absorption panels 6a and 6b by the horizontal beads 5b, and the barrel 32 is formed by the horizontal beads 5b formed along the circumferential direction. Even if it is divided into the part 321 and the lower body part 322, the reduced pressure absorption performance is not significantly impaired.
Thereby, by attaching a label to the middle body part 321 or the lower body part 322, which occupies a large area on the side surface of the container, the half label attachment surface 9 can be made equivalent to a conventional square bottle, and a half label is applied. A sufficient area can be secured.

Further, when the half label is applied to the middle body portion 321, the horizontal beads 5 a and 5 b can function to prevent the label from coming off. Similarly, when the half label is applied to the lower body portion 322, 5b and 5c can be made to function as prevention of label removal. Further, by using the reduced pressure absorption panels 6a and 6b and the column portions 8a and 8b, these can be functioned as a rotation stopper for the label.
In addition to these aspects, as shown in FIG. 2, by providing a label so as to straddle at least a part of the shoulder 31 and the middle trunk 321, the area of the half label mounting surface 9 can be reduced. It can be made even larger.

The position where the horizontal bead 5b that divides the cylindrical portion 32 into the middle barrel portion 321 and the lower barrel portion 322 is appropriately set in consideration of the design of the container 1, the size of the label to be mounted, and the like. It is preferable to form it at substantially the center of the portion 32. Specifically, the ratio (h2 / h3) of the length (h2) in the height direction of the middle body 321 to the length (h3) in the height direction of the lower body 322 is 0.8 to 1. .2 is preferable, and in the example shown in FIG.
Further, since the lateral bead also has a function of preventing deformation against reduced pressure and lateral load, it is preferable to provide the lateral bead 5b at a position satisfying the above range even when a full-size label is attached.

Further, in the container 1 shown in FIG. 1, the column portions 8a and 8b formed between the adjacent reduced pressure absorption panels 6a and 6b are inclined in a spiral shape along the height direction, but the column portion 8a. , 8b are formed so as to be spirally inclined, so that the body 3 is easily deformed so as to be twisted in the circumferential direction.
If the volume of the container 1 is reduced by such torsional deformation when the internal pressure of the container 1 is reduced, not only the deformation of the vacuum absorbing panels 6a and 6b into the container but also the torsional deformation of the body 3 is caused. Can absorb the reduced pressure, and the vacuum absorption performance of the container 1 can be further improved.

Further, the column portions 8a and 8b that obliquely cross the side surface of the body portion 3 can prevent the side surface of the container from expanding outward due to the thermal expansion of the contents during heating, the weight of the contents, and the like. The load bearing strength against the load in the direction is also improved. In particular, if the column portions 8a and 8b are formed so as to obliquely cross the side surface of the body portion 3, the stopper S and the column portions 8a and 8b come into contact with each other in the vending machine. It is also preferable for preventing deformation of the container 1 due to an impact when contacting the stopper S. When heating in the vending machine, the strength of the material forming the container 1 is lowered, and thus it is particularly useful to form the column portions 8a and 8b in a spiral shape as described above.
Further, by forming the column portions 8a and 8b to be spirally inclined, the longitudinal load is elastically received by the torsional deformation with respect to the longitudinal load, and the container 1 is buckled. Can be effectively avoided.
In forming the column portions 8a and 8b by being spirally inclined, the inclination angle α with respect to the height direction when the container 1 is viewed from the front is preferably 10 to 40 degrees, particularly preferably 20 to 30 degrees. Yes, it is 26 degrees in the example shown in FIG.

Further, as schematically shown in FIG. 3, in the vending machine, the containers 1 a and 1 b continuously supplied along the guide G are supported by the long side S <b> 1 of the stopper S at the lowest position. Is in a state.
When the stopper S rotates around the fulcrum P in the direction of the arrow in the figure, the container 1a is released from the stopper S while the short side S2 of the stopper S supports the container 1b located above the container 1a. It is discharged to the outlet of the vending machine. Then, when the stopper S rotates in the direction opposite to the arrow in the drawing and returns to the original position, the container 1b is released from the support by the short side S2 of the stopper S and moved to the lowest position, and at the same time, the stopper S It is supported by the long side portion S1 and waits for the next discharge.

Since a series of these operations uses the fall due to the weight of the containers 1a and 1b filled with the contents, when the containers 1a and 1b are supported by the stopper S, the containers 1a and 1b have a considerable amount. The impact is on.
To prevent the container 1 from being deformed by the impact at this time, the column portions 8a and 8b are always in contact with the stopper S. For example, as shown in FIG. It is also possible to shift the phase β with respect to the column part 8b formed in the lower body part 322. At this time, the inclination angle α of the column portions 8a and 8b can be appropriately changed so that the total area of the portions where the column portions 8a and 8b abut against the stopper S is as large as possible. The angle α may be the same or different between the middle body 321 and the lower body 322.

  The plastic bottle container according to the present embodiment as described above can be manufactured, for example, by biaxial stretch blow molding of a bottomed cylindrical preform manufactured by known injection molding or extrusion molding. it can. Moreover, the thermoplastic resin which comprises the container 1 which concerns on this embodiment can use arbitrary things as long as it is resin which can be stretch blow molded and thermally crystallized.

Specifically, thermoplastic polyesters such as polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, polycarbonate, polyarylate, polylactic acid or copolymers thereof, blends of these resins or other resins are suitable. In particular, an ethylene terephthalate thermoplastic polyester such as polyethylene terephthalate is preferably used.
Further, acrylonitrile resin, polypropylene, propylene-ethylene copolymer, polyethylene and the like can also be used.
These resins are blended with various additives such as colorants, ultraviolet absorbers, mold release agents, lubricants, nucleating agents, antioxidants, antistatic agents, etc. within the range that does not impair the quality of the molded product. be able to.

The ethylene terephthalate-based thermoplastic polyester is composed of an ethylene terephthalate unit in the majority of ester repeating units, generally 70 mol% or more, and has a glass transition point (Tg) of 50 to 90 ° C. and a melting point (Tm) of 200 to 275. Those in the range of ° C. are preferred.
As an ethylene terephthalate-based thermoplastic polyester, polyethylene terephthalate (PET) is particularly excellent in terms of pressure resistance, heat resistance, heat pressure resistance, etc. In addition to ethylene terephthalate units, dibasic acids such as isophthalic acid and naphthalenedicarboxylic acid Copolyesters containing a small amount of ester units composed of diols such as propylene glycol can also be used.

Moreover, the container 1 which concerns on this embodiment can also be comprised with a thermoplastic polyester layer of two or more layers besides the case where it is comprised with a single layer (one layer) thermoplastic polyester layer. Furthermore, an intermediate layer sealed between an inner layer and an outer layer composed of two or more thermoplastic polyester layers can be provided, and the intermediate layer can be a barrier layer or an oxygen absorbing layer.
By providing the barrier layer and the oxygen absorbing layer in this way, it is possible to suppress the permeation of oxygen from the outside into the container, and to prevent the alteration of the contents in the container due to the oxygen from the outside.
Here, as the oxygen absorbing layer, any layer can be used as long as it absorbs oxygen and prevents permeation of oxygen, but a combination of an oxidizable organic component and a transition metal catalyst, or substantially oxidized. It is preferred to use a combination of non-gas barrier resin, oxidizable organic component and transition metal catalyst.

  Although the present invention has been described with reference to the preferred embodiment, it is needless to say that the present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the present invention. .

  For example, in the above-described embodiment, the column portions 8a and 8b formed on the middle body portion 321 and the lower body portion 322 are both inclined in a spiral shape, but sufficient decompression absorption performance, load resistance strength, and the like are obtained. In this case, at least one of the column part 8a formed on the middle body part 321 and the column part 8b formed on the lower body part 322 may be inclined spirally.

  In this case, as shown in FIG. 5, in the lower trunk portion 322 that is located on the ground contact side and cannot release the longitudinal load downward, the column portion 8b is formed in a spiral shape with respect to the longitudinal load. Twist deformation is likely to occur, which is preferable in avoiding buckling. Also, in order to prevent the barrel portion 3 from bulging outward due to the weight of the contents, the column portion 8b formed in the lower barrel portion 322 positioned below the container 1 is preferably spiral.

  As described above, the plastic bottle device according to the present invention can be used as a beverage bottle container, and is particularly suitable for use in sales by a vending machine.

It is a front view which shows the outline of one Embodiment of the plastic bottle container which concerns on this invention. It is explanatory drawing which shows the state which the plastic bottle container contact | abutted in the stopper in the vending machine. It is explanatory drawing which shows the outline of the state by which a container is continuously supplied in a vending machine. It is a front view which shows the outline of other one Embodiment of the plastic bottle container which concerns on this invention. It is a front view which shows the outline of other one Embodiment of the plastic bottle container which concerns on this invention. It is a front view which shows the outline of a prior art example, (a) shows an example of a square bottle, (b) has shown an example of a round bottle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Container 2 Mouth part 3 Body part 31 Shoulder part 32 Cylindrical part 321 Middle body part 322 Lower body part 4 Bottom part 5b Horizontal bead 6a, 6b Decompression absorption panel 8a, 8b Column part 9 Half label mounting surface S Stopper W Supply passage side Wall surface α Inclination angle of the column β Phase between the column formed on the middle barrel and the column formed on the lower barrel

Claims (10)

A plastic bottle container having a mouth, a body and a bottom,
The barrel part is composed of a substantially cylindrical tubular part and a shoulder part that is squeezed from the upper end of the tubular part and continues to the mouth part,
Further, the cylindrical portion is divided into a middle body portion and a lower body portion by a horizontal bead formed along the circumferential direction,
A plastic bottle container in which the middle body part and the lower body part are both provided with a reduced pressure absorption panel.   2. The plastic bottle container according to claim 1, wherein a ratio of a length of the cylindrical portion to a length of the body portion in a height direction is 0.70 to 0.85.   The plastic bottle container according to claim 1 or 2, wherein a ratio of a length in the height direction of the middle body portion and a length in the height direction of the lower body portion is 0.8 to 1.2.   The plastic bottle container according to claim 1, 2 or 3, wherein the middle body part or the lower body part is a half label mounting surface.   The plastic bottle container according to any one of claims 1 to 4, wherein at least a part of the shoulder portion and the middle body portion are half label mounting surfaces.   A plurality of vertically elongated vacuum absorption panels are formed in the height direction along the circumferential direction of the middle barrel portion and the lower trunk portion, and a column portion is formed between the adjacent vacuum absorption panels. The plastic bottle container in any one of Claims 1-5.   The plastic bottle container according to claim 6, wherein the column portion is inclined in a spiral shape.   The plastic bottle container of Claim 7 which shifted the phase along the circumferential direction of the pillar part formed in the said middle trunk | drum, and the pillar part formed in the said lower trunk | drum.   The plastic bottle container according to any one of claims 1 to 8, which is used for sale in a vending machine.   The plastic bottle container according to claim 7 or 8, which is used for heating sales in a vending machine.

Images