JP2005104547A - Synthetic resin bottle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a synthetic resin bottle, which enables a person to easily apply a force for opening to a stopper without impairing easiness in gripping the stopper. <P>SOLUTION: The synthetic resin bottle holds a liquid of less than 1,000 ml, and comprises a mouth (11) on which the stopper is screwed, a shoulder (12) which is formed to widen the outer diameter of the bottle consecutively from the mouth (11), and a trunk (13) continuous with the shoulder (12). The outer diameter of the mouth (11) is 35 mm or larger to 50 mm or smaller, and that of the trunk (13) is 50 mm or larger to 70 mm or smaller. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a bottle formed of a synthetic resin such as PET (polyethylene terephthalate (PET)).

  PET bottles are widely used as containers for beverages. This type of plastic bottle usually has a mouth, a shoulder, and a trunk (for example, Patent Document 1). With such a structure, the outer diameter of the mouth portion of a conventional plastic bottle having a capacity of less than 1000 ml is generally unified to 27 millimeters. And the external shape of the conventional typical PET bottle is as showing in the following tables.

JP-A-11-301633

  By the way, in a plastic bottle having an inner volume of less than 1000 ml, the bottle is opened by holding the trunk with one hand and turning the plug with the other hand. Considering such an opening operation, the greater the force required to turn the spout, the greater the force to grip the torso, especially in plastic bottles such as plastic bottles. If the gripping force becomes too large, the beverage liquid in the bottle may spout from the mouth immediately after opening. Further, in the case of a refrigerated or hot-sold beverage in a container, the contents may be cold or hot and the container body may not be firmly grasped. For this reason, it is desirable to make the force required for opening the plug as easy as possible.

  The force required to open the mouthpiece should be smaller as the bottle outer diameter, ie, the outer diameter of the mouthpiece is smaller. It is difficult to hang on the stopper, and it is difficult to apply the necessary force, making it difficult to open the stopper. From this, it cannot be said that the mouth outer diameter (27 mm) of the conventional PET bottle is necessarily appropriate.

  In addition, if the outer diameter of the mouth portion becomes too large, in the step of filling the beverage liquid, in order to prevent the beverage liquid filled by vibration of the PET bottle from splashing outside from the mouth portion, Head space must be relatively large. In addition, it becomes difficult to hold the plug with one hand when opening.

  The present invention was made from such a point of view, and provides a synthetic resin bottle that can easily apply the force necessary for opening the cap without impairing the ease of gripping the plug. is there.

  The synthetic resin bottle according to the present invention has an inner volume of less than 1000 milliliters, a mouth portion to which a mouthpiece is to be screwed, and a shoulder portion formed so that an outer diameter gradually increases from the mouth portion. And a synthetic resin bottle having a body portion following the shoulder portion, wherein the outer diameter of the mouth portion is in a range of 35 mm or more and 50 mm or less, and the outer diameter of the body portion is 50 mm or more. It becomes the structure which exists in the range below 70 millimeters.

  With such a configuration, the outer diameter of the mouth portion is in the range of 35 to 50 millimeters in the outer diameter range of 50 to 70 millimeters of the trunk that is relatively easy to grip with one hand. Usually, the plug is made of a synthetic resin such as polypropylene and has a thickness of about 1 mm to 2 mm. Can be held at. In addition, the outer diameter of the mouth in the above range is larger than 27 mm, which is a typical outer diameter of the mouth of a conventional synthetic resin (pet) bottle, and it is easy to grasp the mouth with fingers. It becomes easier to apply the necessary force than conventional PET bottles.

  Further, the synthetic resin bottle according to the present invention has an inner volume of less than 1000 milliliters, and is formed such that the mouth part to which the mouth plug is screwed and the outer diameter gradually and continuously from the mouth part. A synthetic resin bottle having a shoulder portion and a trunk portion following the shoulder portion, wherein the outer diameter of the barrel portion is in a range of 60 mm or more and 70 mm or less, and the outer diameter of the mouth portion and the barrel It becomes the structure which exists in the range from which ratio with the outer diameter of a part will be 0.5 or more and 0.6 or less.

  With such a configuration, the outer diameter of the mouth portion is in the range of 30 millimeters to 42 millimeters in the outer diameter range of 60 millimeters to 70 millimeters of the trunk that is relatively easy to grip with one hand. As long as the plug is engaged with the mouth portion having such an outer diameter, a normal person can hold it with the index finger and the thumb as described above. The outer diameter of the mouth in the above range is larger than 27 mm, which is a typical outer diameter of the mouth of a conventional synthetic resin (pet) bottle, and it is easy to grasp the mouth with fingers. It becomes easier to apply the necessary force than conventional PET bottles.

  The ratio of the outer diameter of the mouth part to the outer diameter of the body part is preferably in the range of 0.54 or more and 0.56 or less.

  With such a configuration, the outer diameter of the mouth portion is in the range of 32.4 millimeters to 39.2 millimeters in the outer diameter range of 60 millimeters to 70 millimeters of the trunk that is relatively easy to grip with one hand.

  The synthetic resin bottle according to the present invention may have a configuration in which a multi-thread screw that meshes with the cap is formed on the outer wall of the mouth.

  With such a configuration, it is possible to reduce the amount of rotation of the plug that meshes with the mouth portion when opening, and it is easier to open the plug.

  Furthermore, the synthetic resin bottle according to the present invention may have a configuration in which an uneven panel surface is formed on the body portion.

  With such a configuration, when the outside of the bottle body is covered with a label, a gap is created in at least a part between the label and the panel surface, so that the contents of the bottle are in a cold or hot state other than room temperature. Even if it exists, the thermal conductivity between the fingers that hold the container and the contents becomes low, and it becomes easier to grasp the bottle with fingers and to open the bottle.

  According to the synthetic resin bottle according to the present invention, the outer diameter of the mouth portion is maintained within a range in which a normal person can grasp the mouth plug engaged with the mouth portion with the index finger and the thumb while the conventional synthetic bottle is used. Since it is larger than 27 mm, which is the typical outer diameter of the mouth of a plastic (pet) bottle, the force required to open it is easier to apply with fingers than with a conventional plastic bottle. It is possible to realize a synthetic resin bottle that can be easily opened with the other hand while grasping.

  Embodiments of the present invention will be described with reference to the drawings.

  A plastic bottle that is a synthetic resin bottle according to an embodiment of the present invention is configured as shown in FIG.

  In FIG. 1, this plastic bottle includes a mouth portion 11 to which a mouthpiece is to be screwed, a shoulder portion 12 having an outer diameter gradually increasing continuously from the mouth portion 11, and a trunk portion 13 following the shoulder portion 12. It has a prepared structure. On the outer wall of the mouth portion 11, a double thread 11 a that meshes with the mouth plug is formed. In addition, a plurality of panel portions 14 are formed on the outer periphery of the body portion 13 for absorbing pressure increase and pressure reduction in the PET bottle. Each panel part 14 is uneven.

  Three types of PET bottles having such a structure and having an internal volume of 280 ml, 350 ml, and 500 ml were prepared. The external shape of each plastic bottle is as shown in the following table.

  In a plastic bottle having an internal volume of 280 ml, the outer diameter of the trunk portion 13 is 66 mm, which is within a size range that can be easily grasped with one hand, and the outer diameter of the mouth portion 11 is 37 mm. In this case, the ratio between the outer diameter (mouth diameter) of the mouth portion 11 and the outer diameter (body diameter) of the body portion 13 is 0.56. Further, in a PET bottle having an inner volume of 350 ml, the outer diameter of the body portion 13 is 68 mm which is within a size range that can be easily grasped with one hand, and the outer diameter of the mouth portion 11 is 37 mm. In this case, the ratio of the outer diameter of the mouth portion 11 to the outer diameter of the body portion 13 is 0.54. Further, in a plastic bottle having an inner volume of 500 ml, the outer diameter of the body portion 13 is 68 mm within a size range that can be easily grasped with one hand, and the outer diameter of the mouth portion 11 is 37 mm. In this case, the ratio of the outer diameter of the mouth portion 11 to the outer diameter of the body portion 13 is 0.54.

  In various types of PET bottles having such a structure, if the mouth 11 has an outer diameter of 37 mm and can be engaged with the mouth, an ordinary person can hold it with the index finger and thumb. Ease is not compromised. Moreover, since the outer diameter of such a mouth part 11 becomes larger than the outer diameter (27 mm) of a conventional typical PET bottle, a force necessary for opening the mouth stopper meshing with the mouth part 11 is exerted. It is easier to apply than conventional PET bottles. Furthermore, since the screw that is formed in the mouth portion 11 and meshes with the plug is a double-thread screw 11a, it is possible to open the plug with less rotational operation than in the normal single-thread screw, and the opening operation is reduced. It becomes easier.

  In addition, in the outer diameter range of 50 mm to 70 mm of the trunk portion 13 that is relatively easy to grip with one hand, the same effect as the above-described example can be obtained if the outer diameter of the mouth portion 11 is in the range of about 35 mm to 50 mm.

  FIG. 2 shows a plastic bottle as a synthetic resin bottle according to another embodiment of the present invention.

  In FIG. 2, this PET bottle is similar to the above-described example (see FIG. 1). A mouth portion 11 to which a mouthpiece is to be screwed and a shoulder portion 12 whose outer diameter gradually increases continuously from the mouth portion 11. And a trunk portion 13 following the shoulder portion 12. On the outer wall of the mouth portion 11, a triple thread 11 b that meshes with the spigot is formed, and on the outer periphery of the body portion 13, a plurality of panel portions 14 for absorbing pressure increase and pressure reduction in the PET bottle are formed. Each panel part 14 is uneven.

  A PET bottle having such a structure and an internal volume of 200 ml was prepared. The external shape of this plastic bottle is as shown in the following table.

  In the PET bottle having an inner volume of 200 ml, the outer diameter of the body portion 13 is 54 mm, which is a size range that can be easily grasped with one hand, and the outer diameter of the mouth portion 11 is 47 mm. In this case, the outer diameter of the trunk portion 13 is in the range of 50 mm to 70 mm, and the outer diameter of the mouth portion 11 is in the range of 35 mm to 50 mm. Note that the ratio of the outer diameter of the mouth portion 11 to the outer diameter of the body portion 13 is 0.87.

  As shown in FIGS. 1 and 2, a panel portion 14 having irregularities is formed on a body portion 13 of a synthetic resin bottle (pet bottle) according to an embodiment of the present invention. Usually, this type of bottle is sold in a state where the periphery of the body portion 13 is covered with a label on which a product name, a content type, and the like are printed. As the label, a stretch label or a shrink label made of polystyrene resin or polyethylene terephthalate resin is used. When an uneven panel 14 is formed on the bottle body 13, as schematically shown in the bottle body horizontal sectional view of FIG. A gap 15 is formed between the label 16 to be covered and the panel unit 14.

  Bottled beverages are often sold refrigerated or hot. Even if the contents are in a cold or hot state other than room temperature, as described above, the panel 14 and the label formed on the bottle body 13 are labeled. If there is an air gap 15 between 16 and 16, the thermal conductivity becomes low, and it becomes easy to grasp the bottle with fingers, so that it is easy to open the bottle. Further, if the surface of the body portion 13 is uneven, an anti-slip effect is also achieved.

  The synthetic resin bottle according to the present invention is made of a conventional synthetic resin while maintaining the mouth diameter of the mouth within a range in which a normal person can grasp the mouth plug with the index finger and thumb. (Pet) It becomes larger than the typical outer diameter of the mouth part of the bottle, and the force required to open it is easier to apply with fingers than conventional PET bottles, thus impairing the ease of gripping the mouthpiece. Therefore, it can be easily opened and is useful as a bottle formed of a synthetic resin such as PET (polyethylene terephthalate (PET)).

It is a figure which shows the external shape of the plastic bottle which is a synthetic resin bottle which concerns on embodiment of this invention. It is a figure which shows the external shape of the synthetic resin bottles (pet bottle) which concern on other embodiment of this invention. It is a trunk | drum horizontal sectional view (AA sectional drawing) of the PET bottle shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Mouth part 11a Double thread 11b Three thread 12 Shoulder part 13 Body part 14 Panel part 15 Space | gap 16 Label

Claims (5)

A mouth portion having an inner volume of less than 1000 ml, to which the mouth plug is to be screwed, a shoulder portion formed so as to gradually increase the outer diameter continuously from the mouth portion, and a trunk portion following the shoulder portion; A synthetic resin bottle having
A synthetic resin bottle, wherein an outer diameter of the mouth portion is in a range of 35 mm to 50 mm, and an outer diameter of the body portion is in a range of 50 mm to 70 mm. A mouth portion having an inner volume of less than 1000 ml, to which the mouth plug is to be screwed, a shoulder portion formed so as to gradually increase the outer diameter continuously from the mouth portion, and a trunk portion following the shoulder portion; A synthetic resin bottle having
The outer diameter of the trunk is in the range of 60 mm to 70 mm, and the ratio of the outer diameter of the mouth to the outer diameter of the trunk is in the range of 0.5 to 0.6. A synthetic resin bottle characterized by being. The synthetic resin bottle according to claim 2, wherein the ratio of the outer diameter of the mouth portion to the outer diameter of the body portion is in a range of 0.54 or more and 0.56 or less. The synthetic resin bottle according to any one of claims 1 to 3, wherein a multi-thread screw that meshes with the cap is formed on an outer wall of the mouth portion. The synthetic resin bottle according to any one of claims 1 to 4, wherein a panel surface having irregularities is formed on the body portion.

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