Bottle

Abstract

To suppress plastic deformation of a lower end part of a shoulder part.SOLUTION: A mouth part 11, a shoulder part 12, a barrel part 13, and a bottom part 14 are continuously provided in this order from above to below along a bottle axis O direction, and a peripheral groove 15 is formed at a connection part between the shoulder part and the barrel part. An upper connection part 16 positioned between the shoulder part and the peripheral groove is positioned on an inside of a radial direction of a lower connection part 17 positioned between the barrel part and the peripheral groove.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a bottle. [Background technology]

[0002] Conventionally, as shown in Patent Document 1 below, for example, there has been known a bottle in which a mouth, a shoulder, a body, and a bottom are arranged successively from top to bottom along the axial direction of the bottle, and a circumferential groove is formed at the connection between the shoulder and the body. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2022-053681 A Summary of the Invention [Problem to be solved by the invention]

[0004] The connection part is the part with the largest outer diameter of the bottle and is easily subjected to an external force directed inward in the radial direction, and when an external force directed inward in the radial direction is applied to the connection part, there is a risk that the lower end part of the shoulder part will undergo plastic deformation. Plastic deformation of the shoulder part is more likely to occur as the bottle becomes lighter.

[0005] The present invention provides a bottle that can suppress plastic deformation of the lower end of the shoulder portion. [Means for solving the problem]

[0006] In one embodiment of the bottle of the present invention, a mouth, shoulder, body, and bottom are connected in this order from top to bottom along the bottle axial direction, a circumferential groove is formed at the connection between the shoulder and the body, and an upper connection portion located between the shoulder and the circumferential groove is located radially inward from a lower connection portion located between the body and the circumferential groove.

[0007] Since the upper connection portion, located between the shoulder and the circumferential groove, is located radially inward from the lower connection portion, located between the body and the circumferential groove, the upper connection portion is less likely to be collided with by objects and is less likely to be subjected to radially inward external forces, thereby preventing plastic deformation of the lower end portion of the shoulder adjacent to the upper connection portion in the bottle axial direction. A circumferential groove is formed at the connection between the shoulder and body, so that even if an external force is applied to the lower connection, which is prone to collision with objects, this external force can be prevented from being transmitted to the upper connection.

[0008] A plurality of shoulder panel portions recessed radially inward may be formed at intervals in the circumferential direction on the outer surface of the shoulder portion, and a first portion extending downward from the lower edge of the shoulder panel portion may be positioned radially inward from at least a part of a second portion extending downward from the lower edge of a column portion located between adjacent shoulder panel portions in the circumferential direction.

[0009] Since the first portion extending downward from the lower edge of the shoulder panel portion is located radially inward of at least a part of the second portion extending downward from the lower edge of the column portion, objects are less likely to collide with the first portion, and external forces are less likely to be applied radially inward to the lower edge of the shoulder panel portion, which has lower rigidity than the lower edge of the column portion, thereby reliably preventing plastic deformation of the lower end of the shoulder portion.

[0010] The second portion may have a protrusion portion that protrudes radially outward, and the outer peripheral surface of the protrusion portion may be located radially outward from the first portion and extend in the bottle axis direction when viewed in a vertical cross section along the bottle axis direction.

[0011] Since the second portion is formed with a protrusion that protrudes radially outward, by causing an object that is about to collide with the upper connection portion to collide with the protrusion, it becomes difficult for an external force to be applied radially inward to the lower edge of the shoulder panel portion, and plastic deformation of the lower end portion of the shoulder portion can be reliably suppressed. Since the outer surface of the protrusion extends in the bottle axial direction when viewed in a longitudinal cross section along the bottle axial direction, even if an external force directed radially inward is applied to the outer surface of the protrusion, it is possible to disperse the stress generated in the protrusion, and plastic deformation of the protrusion can be suppressed.

[0012] The first portion may have a first longitudinal groove formed therein, the first longitudinal groove extending in an axial direction of the bottle.

[0013] Since the first portion has a first longitudinal groove extending in the bottle axial direction, when an external force directed radially inward is applied to the first portion, it becomes easier to elastically deform the first portion, making it easier to restore the deformation of the first portion.

[0014] The second portion may be formed with a second longitudinal groove extending in the axial direction of the bottle.

[0015] Since a second vertical groove extending in the bottle axial direction is formed in the second portion, when an external force directed radially inward is applied to the second portion, it becomes easier to elastically deform the second portion, making it easier to restore the deformation of the second portion. Effect of the Invention

[0016] According to one aspect of the present invention, plastic deformation of the lower end portion of the shoulder portion can be suppressed. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a side view of a bottle according to one embodiment. [Diagram 2] FIG. 2 is a partially enlarged view including a connection portion between a shoulder portion and a torso portion in FIG. [Diagram 3] FIG. 3 is a cross-sectional view taken along line III-III in FIG. 2. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] Hereinafter, a bottle according to one embodiment of the present invention will be described with reference to the drawings. As shown in Fig. 1, the bottle 1 according to this embodiment is configured by continuously arranging a mouth portion 11, a shoulder portion 12, a body portion 13, and a bottom portion 14 in this order from top to bottom along the bottle axis O. The bottle 1 is formed by biaxially stretching blow molding a preform formed by injection molding. The capacity of the bottle 1 is 1 L or more (about 4 L in the illustrated example). Hereinafter, the direction intersecting the bottle axis O when viewed from the bottle axis O direction will be referred to as the radial direction, and the direction circumferentially around the bottle axis O when viewed from the bottle axis O direction will be referred to as the circumferential direction.

[0019] The mouth portion 11 is formed in a cylindrical shape extending in the direction of the bottle axis O. The shoulder portion 12 extends radially outward as it moves downward from the lower end of the mouth portion 11. The body portion 13 is formed in a tubular shape extending in the direction of the bottle axis O. A panel portion 13a is formed on the outer peripheral surface of the body portion 13, which is recessed radially inward. The upper end of the panel portion 13a is located at the upper end of the body portion 13. A handle (not shown) is attached to the outer peripheral surface of the body portion 13 on the opposite side of the panel portion 13a in the radial direction. It is not necessary to attach a handle to the body portion 13. The bottom portion 14 is formed in a cylindrical shape with a bottom, and the peripheral wall of the bottom portion 14 extends radially inward as it moves downward.

[0020] A circumferential groove 15 is formed at the connection between the shoulder portion 12 and the body portion 13 . The upper connection portion 16, which is located between the shoulder portion 12 and the circumferential groove 15, is located radially inward from the lower connection portion 17, which is located between the body portion 13 and the circumferential groove 15. The upper connection portion 16 is located radially inward from the lower connection portion 17 by about 1 mm.

[0021] As shown in FIG. 2 and FIG. 3, the lower part 16a of the upper connection part 16 extends straight in the bottle axis O direction in a vertical cross section along the bottle axis O direction, and the upper part 16b of the upper connection part 16 extends radially outward as it heads downward in the vertical cross section. The lower part 16a of the upper connection part 16 may extend radially outward as it heads downward in the vertical cross section. The lower connection part 17 extends straight in the bottle axis O direction in the vertical cross section, and is the part with the maximum outer diameter of the bottle 1. The size of the lower connection part 17 in the bottle axis O direction is larger than the size of the upper connection part 16 in the bottle axis O direction. The size of the lower connection part 17 in the bottle axis O direction may be equal to or smaller than the size of the upper connection part 16 in the bottle axis O direction.

[0022] A plurality of shoulder panel portions 18 recessed radially inward are formed at intervals in the circumferential direction on the outer peripheral surface of the shoulder portion 12. In the illustrated example, eight shoulder panel portions 18 are formed on the shoulder portion 12. It is noted that the shoulder portion 12 does not necessarily need to have shoulder panel portions 18 formed thereon. The first portion 21 extending downward from the lower edge of the shoulder panel portion 18 is located radially inward of at least a part of the second portion 22 extending downward from the lower edge of the column portion 19 located between circumferentially adjacent shoulder panel portions 18. In the illustrated example, the shoulder panel portion 18 is provided integrally from the upper portion to the lower edge of the shoulder portion 12.

[0023] Here, the lower edges of the shoulder panel portion 18 and the column portion 19 are located at the lower edge of the shoulder portion 12, and the first portion 21 and the second portion 22 form the upper portion 16b of the upper connection portion 16. The lower edges of the shoulder panel portion 18 and the column portion 19 may be located above the lower edge of the shoulder portion 12.

[0024] A protruding portion 23 that protrudes radially outward is formed on the second portion 22. The outer peripheral surface of the protruding portion 23 is located radially outward from the first portion 21, and extends straight in the bottle axis O direction in a vertical cross-sectional view along the bottle axis O direction. The upper end of the overhanging portion 23 is located above the lower end edge of the column portion 19 and is located at the lower end of the shoulder portion 12. The upper end of the overhanging portion 23 may be located below the lower end edge of the column portion 19. The upper end of the overhanging portion 23 presents a curved shape that protrudes obliquely upward toward the outside in the radial direction when viewed in the vertical cross section. The circumferential size of the overhanging portion 23 decreases toward the top. When viewed from the front from the outside in the radial direction, the overhanging portion 23 has an isosceles triangular shape with a base that extends in the circumferential direction and an apex angle that points upward. Both circumferential ends of the overhanging portion 23 are spaced downward from both circumferential ends of the lower end of the shoulder panel portion 18 and are located at the same circumferential position.

[0025] The first portion 21 is formed with a first vertical groove 24 extending in the direction of the bottle axis O. It is to be noted that the first portion 21 does not necessarily need to have the first vertical groove 24 formed therein. The first longitudinal groove 24 extends downward from the circumferential center of the lower edge of the shoulder panel portion 18. The first longitudinal groove 24 penetrates the lower edge of the shoulder panel portion 18 in the bottle axis O direction. The first longitudinal groove 24 is provided over the entire length of the upper portion 16b of the upper connecting portion 16 in the bottle axis O direction.

[0026] The second portion 22 is formed with a second longitudinal groove 25 extending in the direction of the bottle axis O. It is to be noted that the second portion 22 does not necessarily need to have the second longitudinal groove 25 formed therein. In the illustrated example, the second vertical groove 25 is provided in the protruding portion 23. The second vertical groove 25 is provided in the circumferential center of the protruding portion 23 over the entire length of the protruding portion 23 in the bottle axis O direction. The second vertical groove 25 opens upward. The length of the second vertical groove 25 (size in the bottle axis O direction) is longer than the length of the first vertical groove 24. The second vertical groove 25 and the first vertical groove 24 have the same width (size in the circumferential direction).

[0027] As described above, in the bottle 1 of this embodiment, the upper connection portion 16, which is located between the shoulder portion 12 and the circumferential groove 15, is located radially inward from the lower connection portion 17, which is located between the body portion 13 and the circumferential groove 15. Therefore, the upper connection portion 16 is less likely to be collided with by an object and is less likely to be subjected to an external force directed radially inward, thereby suppressing plastic deformation of the lower end portion of the shoulder portion 12 adjacent to the upper connection portion 16 in the direction of the bottle axis O. Since a circumferential groove 15 is formed at the connection portion between the shoulder portion 12 and the body portion 13, even if an external force is applied to the lower connection portion 17, which is likely to be hit by an object, the external force can be prevented from being transmitted to the upper connection portion 16.

[0028] Since the first portion 21 extending downward from the lower edge of the shoulder panel portion 18 is located radially inward of at least a portion of the second portion 22 extending downward from the lower edge of the column portion 19, objects are less likely to collide with the first portion 21, and external forces are less likely to be applied radially inward to the lower edge of the shoulder panel portion 18, which has lower rigidity than the lower edge of the column portion 19, so that plastic deformation of the lower end of the shoulder portion 12 can be reliably suppressed.

[0029] The second portion 22 is formed with a protrusion 23 that protrudes radially outward, so that an object that is about to collide with the upper connection portion 16 is caused to collide with the protrusion 23, making it difficult for an external force directed radially inward to be applied to the lower edge of the shoulder panel portion 18, thereby reliably preventing the lower end portion of the shoulder portion 12 from undergoing plastic deformation. Since the outer peripheral surface of the protrusion portion 23 extends in the direction of the bottle axis O when viewed in a longitudinal cross section along the direction of the bottle axis O, even if an external force directed radially inward is applied to the outer peripheral surface of the protrusion portion 23, it is possible to disperse the stress generated in the protrusion portion 23, and plastic deformation of the protrusion portion 23 can be suppressed.

[0030] Since the first portion 21 has a first vertical groove 24 extending in the direction of the bottle axis O, when an external force directed radially inward is applied to the first portion 21, it becomes easier to elastically deform the first portion 21, and it becomes easier to restore the deformation of the first portion 21.

[0031] Since a second vertical groove 25 extending in the direction of the bottle axis O is formed in the second part 22, when an external force directed radially inward is applied to the second part 22, it becomes easier to elastically deform the second part 22, and it becomes easier to restore the deformation of the second part 22.

[0032] The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0033] The synthetic resin material forming the bottle 1 may be, for example, polyester such as polyethylene terephthalate and polyethylene naphthalate, or polyolefin such as polyethylene and polypropylene, or ethylene vinyl alcohol copolymer (EVOH), etc. Among these, examples of polyethylene include low-density polyethylene (LDPE) and linear low-density polyethylene (LLDPE), etc.

[0034] In addition, within the scope of the invention, the components in the above-described embodiments may be replaced with well-known components, and the above-described embodiments and the above-described variations may be combined as appropriate.

[0035] For example, aspects of the present invention are as follows. <1> The mouth, shoulder, body, and bottom are arranged in this order from top to bottom along the bottle axial direction, A circumferential groove is formed at a connection portion between the shoulder portion and the body portion, A bottle, wherein an upper connection portion located between the shoulder portion and the circumferential groove is located radially inward of a lower connection portion located between the body portion and the circumferential groove. <2> A plurality of shoulder panel portions recessed radially inward are formed at intervals in the circumferential direction on the outer peripheral surface of the shoulder portion, the first portion extending downward from the lower end edge of the shoulder panel portion is located radially inward of at least a part of the second portion extending downward from the lower end edge of the column portion located between the shoulder panel portions adjacent to each other in the circumferential direction; <1> The bottle described in. <3> The second portion has a protruding portion protruding radially outward, The outer circumferential surface of the protruding portion is located radially outward from the first portion and extends in the bottle axial direction in a vertical cross-sectional view along the bottle axial direction. <2> The bottle described in. <4> The first portion has a first longitudinal groove extending in the bottle axial direction. <2> or <3> The bottle described in. <5> The second portion has a second longitudinal groove extending in the bottle axial direction. <2> from <4> Any one of the bottles listed. [Explanation of symbols]

[0036] 1 bottle 11 Mouth 12 Shoulder 13 Torso 14 Bottom 15 Circumferential groove 16 Upper connection part 17 Lower connection 18 Shoulder panel 19 Pillar section 21 Part 1 22 Part 2 23 Overhang 24 First vertical groove 25 Second vertical groove O Bottle stem

Claims

1. The mouth, shoulder, body, and bottom are arranged in this order from top to bottom along the bottle axial direction, A circumferential groove is formed at a connection portion between the shoulder portion and the body portion, A bottle, wherein an upper connection portion located between the shoulder portion and the circumferential groove is located radially inward of a lower connection portion located between the body portion and the circumferential groove.

2. A plurality of shoulder panel portions recessed radially inward are formed at intervals in the circumferential direction on the outer peripheral surface of the shoulder portion, 2. The bottle according to claim 1, wherein a first portion extending downward from a lower edge of the shoulder panel portion is located radially inward of at least a portion of a second portion extending downward from a lower edge of a base portion located between adjacent shoulder panel portions in the circumferential direction.

3. The second portion has a protruding portion protruding radially outward, The bottle according to claim 2 , wherein an outer peripheral surface of the protruding portion is located radially outward from the first portion and extends in the bottle axial direction in a vertical cross-sectional view along the bottle axial direction.

4. The bottle according to claim 2 or 3, wherein the first portion is formed with a first longitudinal groove extending in an axial direction of the bottle.

5. The bottle according to claim 2 or 3, wherein the second portion is formed with a second longitudinal groove extending in an axial direction of the bottle.

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