JP7364766B1 - plastic bottles and beverages - Google Patents

Abstract

An object of the present invention is to provide a plastic bottle having an advantageous structure for ensuring strength while enhancing the beauty of the shoulder part.
A plastic bottle PB has a mouth part 10, a shoulder part 20 extending from the mouth part 10, a bottom part 40, and a cylindrical body part 30 connecting the shoulder part 20 and the bottom part 40. In a first cross section taken along a first plane that includes the central axis AX of the body section 10, the shoulder section 20 has a first slope SP1, and a cross section taken along a second plane that includes the central axis AX and is orthogonal to the first plane. In the second cross section, the shoulder portion 20 has a second slope portion SP2. The angle of the second inclined part SP2 with respect to the central axis AX is smaller than the angle of the first inclined part SP1 with respect to the central axis AX. The shoulder portion 20 has a shoulder groove 21 extending over the entire circumference.
[Selection diagram] Figure 1

Description

FIELD OF THE INVENTION The present invention relates to plastic bottles and beverage products.

Patent Document 1 describes a plastic bottle that can enhance design while ensuring strength to withstand negative pressure after aseptic filling, etc., and also contributes to improving ease of holding. There is. The body of this plastic bottle is provided with at least two concave surfaces and a ring portion. Each of the at least two concave surfaces is formed circumferentially, and the height and depth vary in the circumferential direction. The ring portion forms a boundary between at least two concave surfaces and is convex in the radial direction with respect to the at least two concave surfaces. However, in Patent Document 1, the design of the shoulder portion of the plastic bottle is not considered.

Japanese Patent Application Publication No. 2018-118769

SUMMARY OF THE INVENTION An object of the present invention is to provide a plastic bottle and a beverage product having an advantageous structure for ensuring strength while enhancing the cosmetic appearance of the shoulder portion.

A first aspect of the present invention relates to a plastic bottle having a mouth, a shoulder extending from the mouth, a bottom, and a cylindrical body connecting the shoulder and the bottom, the body In a first cross section taken along a first plane including the central axis of the shoulder part, the shoulder part has a first slope, and in a second cross section taken along a second plane including the central axis and orthogonal to the first plane, The shoulder has a second slope, the angle of the second slope with respect to the central axis is smaller than the angle of the first slope with respect to the central axis, and the shoulder has a second slope with respect to the central axis. and a shoulder groove extending all the way around the second slope .

A second aspect of the present invention relates to a beverage product, and the beverage product includes the plastic bottle according to the first aspect and a cap attached to the mouth of the plastic bottle.

ADVANTAGE OF THE INVENTION According to this invention, the plastic bottle and beverage product which have an advantageous structure in order to ensure strength while enhancing the cosmetics of a shoulder part are provided.

FIG. 1 is a front view of a plastic bottle of one embodiment. The right side view of the plastic bottle of one embodiment. The left side view of the plastic bottle of one embodiment. FIG. 2 is a rear view of a plastic bottle of one embodiment. FIG. 2 is a top view of a plastic bottle of one embodiment. FIG. 1 is a perspective view of a plastic bottle of one embodiment. 6 is an external cross-sectional view of the plastic bottle taken along line A-A' in FIG. 5. FIG. FIG. 6 is an external cross-sectional view of the plastic bottle taken along line B-B' in FIG. 5; The figure for explaining the structure of the shoulder groove provided in the shoulder part. The figure for explaining the structure of the shoulder groove provided in the shoulder part.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. Note that the following embodiments do not limit the claimed invention, and not all combinations of features described in the embodiments are essential to the invention. Two or more features among the plurality of features described in the embodiments may be arbitrarily combined. In addition, the same or similar configurations are given the same reference numerals, and duplicate explanations will be omitted.

1 to 6 exemplarily show the appearance of a plastic bottle PB of one embodiment. 7 shows an external cross-sectional view of the plastic bottle PB taken along line AA' in FIG. 5, and FIG. 8 shows a cross-sectional external view of the plastic bottle PB taken along line BB' in FIG. There is. The plastic bottle PB may have a mouth 10 , a shoulder 20 extending from the mouth 10 , a bottom 40 , and a body 30 connecting the shoulder 20 and the bottom 40 .

The lowermost end of the mouth portion 10 may have a cylindrical shape. The shoulder portion 20 may be a portion whose diameter gradually increases toward the body portion 30 or the bottom portion 40. The body portion 30 may have a cylindrical shape. The body 30 having a cylindrical shape means that the body 30 has a substantially circular shape in a top view, for example, the outermost circumference of the body 30 that appears in the top view is substantially circular. do. The bottom portion 40 may be a portion whose diameter gradually decreases toward the bottom surface (lowermost surface of the plastic bottle PB).

After the plastic bottle PB is filled with a beverage, a cap (not shown) is attached to the mouth portion 10, and a beverage product can be manufactured thereby. A label such as a shrink label or a roll label may be attached to the plastic bottle PB. The beverage may be, for example, a non-carbonated beverage such as tea (e.g., unfermented tea, semi-fermented tea, fermented tea), water, soft drink, fruit juice drink, etc., and the plastic bottle PB may be, for example, a non-carbonated beverage may be configured to be filled with

The external cross-sectional view of FIG. 7 (the external cross-sectional view taken along the line AA' in FIG. 5) is a first cross-sectional view taken along a first plane including the central axis AX of the trunk 30, and the external cross-sectional view of FIG. The external cross-sectional view taken along the line BB') may be understood as a second cross section taken along a second plane that includes the central axis AX of the body 30 and is orthogonal to the first plane. In the first cross section shown in FIG. 7 (that is, the first cross section along the first plane including the central axis AX of the trunk 30), the shoulder portion 20 may have a first slope portion SP1. In the second cross section shown in FIG. 8 (i.e., the second cross section taken by a second plane that includes the central axis AX of the body section 30 and is orthogonal to the first plane), the shoulder section 20 has a second inclined section SP2. can have The angle θ2 of the second inclined portion SP2 with respect to the central axis AX is smaller than the angle θ1 of the first inclined portion SP1 with respect to the central axis AX. A structure in which θ2 is smaller than θ1 may reduce the strength of the shoulder portion 20 (for example, in the axial direction parallel to the central axis AX) by losing the rotational symmetry of the shoulder portion 20, but may reduce the cosmetic appearance of the shoulder portion 20. It can greatly contribute to improvement.

The shoulder portion 20 may have a shoulder groove 21 extending over the entire circumference (of the shoulder portion 20). The shoulder groove 21 is advantageous in order to compensate for the decrease in strength due to the structure in which θ2 is smaller than θ1. As illustrated in FIGS. 1 to 4 and 6, the shoulder groove 21 has a waveform whose height in the axial direction (that is, the height direction) parallel to the central axis AX varies depending on the position in the circumferential direction. It is preferable to have a shape.

As schematically illustrated in FIG. 9, which is an enlarged view of a part of FIG. 7 (first cross section), and FIG. 10, which is a partially enlarged view of FIG. The bottom of the groove 21 may include a first portion having a convex arc shape toward the central axis AX. The depth DP of the first portion is, for example, within the range of 0.5 mm to 1.5 mm, preferably within the range of 0.6 mm to 0.9 mm, and more preferably within the range of 0.7 mm to 0.8 mm. It's possible. The radius of curvature RC1 of the first portion is, for example, within the range of 0.5 mm to 1.5 mm, preferably within the range of 0.6 mm to 0.9 mm, and more preferably within the range of 0.7 mm to 0.8 mm. It's possible.

The shoulder portion 20 may be understood to include an upper shoulder portion 22 located between the mouth portion 10 and the shoulder groove 21 and a lower shoulder portion 23 located between the shoulder groove 21 and the body portion 30. The upper shoulder portion 22 and the shoulder groove 21 are connected by a first connecting portion CPA, and the lower shoulder portion 23 and the shoulder groove 21 are connected by a second connecting portion CPB. As schematically shown in FIGS. 9 and 10, in the first cross section and the second cross section, the first connecting portion CPA has a second portion having a convex arc shape toward the outside of the first connecting portion CPA. The second connecting portion CPB may include a third portion having a convex arc shape toward the outside of the second connecting portion CPB. The radius of curvature RC2 of the second portion may be, for example, within the range of 1 mm to 2 mm, preferably within the range of 1.2 mm to 1.8 mm, and more preferably within the range of 1.4 mm to 1.6 mm. The radius of curvature RC3 of the third portion may be, for example, within the range of 1 mm to 2 mm, preferably within the range of 1.2 mm to 1.8 mm, and more preferably within the range of 1.4 mm to 1.6 mm.

In the second cross section shown in FIG. 8 (i.e., the second cross section taken by a second plane that includes the central axis AX of the trunk 30 and is orthogonal to the first plane), the shoulder 20 is connected to the mouth 10 and the second cross section. A third slope portion SP3 may be provided between the slope portion SP2 and the slope portion SP2. The angle θ3 of the third inclined portion SP3 with respect to the central axis AX may be larger than the angle θ2 of the second inclined portion SP with respect to the central axis AX. Such a structure can contribute to improving the strength of the shoulder portion 20. In one example, the angle θ3 of the third inclined portion SP3 with respect to the central axis AX is equal to the angle of the first inclined portion θ1 with respect to the central axis AX, and such a structure can further contribute to improving the strength of the shoulder portion 20.

As schematically shown in FIGS. 1 to 4 and 6, the body portion 30 may have a first recess 31 and a second recess 32 that are gently recessed. The first recess 31 and the second recess 32 may be provided at opposite positions in the body 30. The first recess 31 and the second recess 32 function as a reduced pressure absorption part that allows the volume of the plastic bottle PB to decrease when the pressure of the plastic bottle PB is reduced (for example, when the beverage in the plastic bottle PB is cooled in a sealed state). It can function. The body portion 30 may have a first circumferential groove 33 . The first circumferential groove 33 may have a structure that is adjacent to the first recess 31 and the second recess 32 and extends over the entire circumference (of the body 30). The first circumferential groove 33 can function to compensate for the decrease in strength of the body section 30 due to the provision of the first recess 31 and the second recess 32. Each of the first recess 31 and the second recess 32 may be configured to form a part of the first circumferential recess 38 that extends over the entire circumference (of the body 30).

The body portion 30 may further include a third recess 34 and a fourth recess 35 that are gently recessed. The third recess 34 and the fourth recess 35 may be provided at opposite positions in the body 30. The third recess 34 and the fourth recess 35 can function as a vacuum absorption section that allows the volume of the plastic bottle PB to decrease when the pressure of the plastic bottle PB is reduced. The body portion 30 may have a second circumferential groove 36 . The second circumferential groove 36 may have a structure that is adjacent to the third recess 34 and the fourth recess 35 and extends over the entire circumference (of the body 30). The second circumferential groove 36 can function to compensate for the decrease in strength of the body 30 due to the provision of the third recess 34 and the fourth recess 35. Each of the third recess 34 and the fourth recess 35 may be configured to form a part of the second circumferential recess 39 that extends over the entire circumference (of the body 30). Between the first circumferential recess 38 and the second circumferential recess 39, a wave-shaped third circumferential groove 37 whose height in a direction parallel to the central axis AX varies depending on the position in the circumferential direction may be arranged. . In another aspect, the third circumferential groove 37 may be arranged between the first circumferential groove 33 and the second circumferential recess 39 . The third circumferential groove 37 may be the deepest groove among the plurality of grooves that the body portion 30 has. Alternatively, it may be the deepest groove among the plurality of grooves that the plastic bottle PB has.

The shoulder portion 20 and the body portion 30 may be connected by a wave-shaped boundary groove 51 whose height in a direction parallel to the central axis AX varies depending on the position in the circumferential direction. In this case, the shoulder portion 20 can be understood as a portion connecting the mouth portion 10 and the boundary groove 51. The boundary groove 51 is advantageous in order to compensate for the decrease in strength due to the structure in which θ2 is smaller than θ1. The mouth portion 10, the shoulder portion 20, the body portion 30, and the bottom portion 40 may have shapes that are rotationally symmetrical by 180 degrees with the central axis AX as the axis of symmetry. Between the trunk 30 and the bottom 40,
A circumferential groove 52 may be arranged.

The invention is not limited to the above-described embodiments, and various modifications and changes can be made within the scope of the invention.

PB: plastic bottle, 10: mouth, 20: shoulder, 21: shoulder groove, 22: upper shoulder, 23: lower shoulder, 30: body, 31: first recess, 32: second recess, 33: third 1 circumferential groove, 34: third recess, 35: fourth recess, 36: second circumferential groove, 37: third circumferential groove, 38: first circumferential recess, 39: second circumferential recess, 40: bottom, 51: Boundary groove, 52: Peripheral groove

Claims (13)

A plastic bottle having a mouth, a shoulder extending from the mouth, a bottom, and a cylindrical body connecting the shoulder and the bottom,
In a first cross section taken by a first plane including a central axis of the trunk, the shoulder has a first slope,
In a second cross section taken by a second plane that includes the central axis and is perpendicular to the first plane, the shoulder portion has a second slope,
The angle of the second slope with respect to the central axis is smaller than the angle of the first slope with respect to the central axis,
The shoulder portion has a shoulder groove that extends all the way around the first slope portion and the second slope portion .
A plastic bottle characterized by: The shoulder groove has a wavy shape in which the height in the axial direction parallel to the central axis varies depending on the position in the circumferential direction.
The plastic bottle according to claim 1, characterized in that: A plastic bottle having a mouth, a shoulder extending from the mouth, a bottom, and a cylindrical body connecting the shoulder and the bottom,
In a first cross section taken by a first plane including a central axis of the trunk, the shoulder has a first slope,
In a second cross section taken by a second plane that includes the central axis and is perpendicular to the first plane, the shoulder portion has a second slope,
The angle of the second slope with respect to the central axis is smaller than the angle of the first slope with respect to the central axis,
The shoulder portion has a shoulder groove extending over the entire circumference,
The shoulder groove has a wavy shape in which the height in the axial direction parallel to the central axis varies depending on the position in the circumferential direction,
In the first cross section and the second cross section, the bottom of the shoulder groove includes a portion having a convex arc shape toward the central axis.
A plastic bottle characterized by: The shoulder portion includes an upper shoulder portion located between the mouth portion and the shoulder groove, and a lower shoulder portion located between the shoulder groove and the body portion,
The upper part of the shoulder and the shoulder groove are connected by a first connecting part, and the lower part of the shoulder and the shoulder groove are connected by a second connecting part,
In the first cross section and the second cross section, the first connecting portion includes a portion having a convex arc shape toward the outside of the first connecting portion, and the second connecting portion includes a portion having a convex arc shape toward the outside of the first connecting portion. including a portion having a convex arc shape toward the outside of the portion;
The plastic bottle according to claim 3, characterized in that: A plastic bottle having a mouth, a shoulder extending from the mouth, a bottom, and a cylindrical body connecting the shoulder and the bottom,
In a first cross section taken by a first plane including a central axis of the trunk, the shoulder has a first slope,
In a second cross section taken by a second plane that includes the central axis and is perpendicular to the first plane, the shoulder portion has a second slope,
The angle of the second slope with respect to the central axis is smaller than the angle of the first slope with respect to the central axis,
The shoulder portion has a shoulder groove extending over the entire circumference,
In the second cross section, the shoulder portion has a third slope portion between the mouth portion and the second slope portion,
The angle of the third slope with respect to the central axis is larger than the angle of the second slope with respect to the central axis.
A plastic bottle characterized by: The angle of the third slope with respect to the central axis is equal to the angle of the first slope with respect to the central axis.
The plastic bottle according to claim 5, characterized in that: A plastic bottle having a mouth, a shoulder extending from the mouth, a bottom, and a cylindrical body connecting the shoulder and the bottom,
In a first cross section taken by a first plane including a central axis of the trunk, the shoulder has a first slope,
In a second cross section taken by a second plane that includes the central axis and is perpendicular to the first plane, the shoulder portion has a second slope,
The angle of the second slope with respect to the central axis is smaller than the angle of the first slope with respect to the central axis,
The shoulder portion has a shoulder groove extending over the entire circumference,
The body portion has a first recess and a second recess that are gently recessed, and the first recess and the second recess are provided at positions opposite to each other in the body,
The body portion has a first circumferential groove adjacent to the first recess and the second recess and extending over the entire circumference.
A plastic bottle characterized by: Each of the first recess and the second recess forms a part of a first circumferential recess that extends over the entire circumference.
The plastic bottle according to claim 7, characterized in that: The body further includes a gently recessed third recess and a fourth recess, the third recess and the fourth recess being provided at opposite positions in the body,
The body further includes a second circumferential groove adjacent to the third recess and the fourth recess and extending over the entire circumference.
The plastic bottle according to claim 7, characterized in that: Each of the third recess and the fourth recess forms a part of a second circumferential recess that extends over the entire circumference.
The plastic bottle according to claim 9, characterized in that: A plastic bottle having a mouth, a shoulder extending from the mouth, a bottom, and a cylindrical body connecting the shoulder and the bottom,
In a first cross section taken by a first plane including a central axis of the trunk, the shoulder has a first slope,
In a second cross section taken by a second plane that includes the central axis and is perpendicular to the first plane, the shoulder portion has a second slope,
The angle of the second slope with respect to the central axis is smaller than the angle of the first slope with respect to the central axis,
The shoulder portion has a shoulder groove extending over the entire circumference,
The shoulder portion and the body portion are connected by a wavy boundary groove whose height in a direction parallel to the central axis varies depending on the position in the circumferential direction.
A plastic bottle characterized by: The mouth portion, the shoulder portion, the body portion, and the bottom portion have shapes that are rotationally symmetrical by 180 degrees with the central axis as an axis of symmetry.
The plastic bottle according to any one of claims 1 to 11, characterized in that: The plastic bottle according to any one of claims 1 to 11,
a beverage filled in the plastic bottle;
a cap attached to the mouth of the plastic bottle;
A beverage product characterized by containing.