Bottle

Abstract

To prevent the breakage of a pillar part.SOLUTION: A cylindrical bottomed body 13 has multiple panel parts 14 that are recessed inwardly in the radial direction provided and spaced in the circumferential direction. Portions between the panel parts which are next to each other in the circumferential direction are pillar parts 15 extending in a bottle axis O direction. When viewed from the radial direction, two of the four sides of the panel part extend in the bottle axis direction, and the remaining two sides form a rectangle that extends in the circumferential direction. Of the pillar part, at a position that is distant from the central part in the bottle axis direction, multiple grooves 16, 17 are provided that extend along the entire circumference of the pillar part, and are shallower than the depth of the panel parts. The multiple grooves are provided in the bottle axis direction with spacing that is narrower than the groove width or are provided in series in the bottle axis direction.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] A bottle is known in which a bottomed, cylindrical body portion has multiple panel portions that are recessed radially inward and spaced apart circumferentially, with pillar portions extending in the bottle axial direction between adjacent panel portions in the circumferential direction, and the panel portions have a rectangular shape when viewed radially, with two of their four sides extending in the bottle axial direction and the remaining two sides extending circumferentially. In this type of bottle, when an external force directed radially inward is applied to the body portion, stress is likely to concentrate in at least one of the four corners of the panel portion, which is rectangular when viewed radially, and there is a risk that a bend will occur in the column portion starting from this point and connecting the corners of adjacent panel portions in the circumferential direction. One possible means for preventing such breakage from occurring is to provide a groove extending in the circumferential direction in the pillar portion, as shown in Patent Document 1 below, for example. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2009-96521 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, when a large external force is applied to the body in the radially inward direction, there is a risk that the column will break, particularly in a lightweight bottle.

[0005] The present invention provides a bottle capable of suppressing breakage of the pillar portion. [Means for solving the problem]

[0006] A bottle according to one embodiment of the present invention has a bottomed, cylindrical body portion having a plurality of panel portions recessed radially inward and spaced apart circumferentially, with adjacent panel portions being spaced apart circumferentially between them, and each panel portion having a rectangular shape with two of its four sides extending in the bottle axial direction when viewed radially, and the remaining two sides extending in the circumferential direction. A plurality of groove portions are provided in the column portion at positions away from the center in the bottle axial direction, the groove portions extending along the entire circumferential length of the column portion and shallower than the depth of the panel portions, and the groove portions are spaced apart in the bottle axial direction by intervals narrower than the groove width, or are arranged in a row in the bottle axial direction.

[0007] Since the column has multiple grooves spaced apart in the axial direction of the bottle by a distance narrower than the groove width, or arranged in a row in the axial direction of the bottle, the stress generated in the column at the portion where the multiple grooves are located (hereinafter referred to as the corresponding portion) can be dispersed and prevented from concentrating. As a result, even if a large external force is applied to the body in the radial inward direction, the corresponding portion of the column can be elastically deformed to absorb the external force, and the column can be prevented from breaking, even in a particularly lightweight bottle. Since the corresponding portion of the pillar is located at a position away from the center in the bottle axial direction, the corresponding portion of the pillar is brought close to the corner of the panel portion in the body where stress is likely to concentrate in response to an external force directed radially inward. This, combined with the fact that the depth of the groove is shallower than the depth of the panel portion, allows the corresponding portion of the pillar to elastically deform with good responsiveness when a large external force directed radially inward is applied to the body.

[0008] Among the multiple groove portions, the deepest portion of the groove portion located furthest outward in the bottle axial direction may be separated in the bottle axial direction from the four corners of the panel portion which has a rectangular shape when viewed radially.

[0009] Of the multiple grooves, the deepest part of the groove located furthest outward in the bottle axial direction (hereinafter referred to as the outer groove) is not circumferentially adjacent to the corners of the panel portion in the body portion where stress is likely to concentrate in response to a radially inward external force, and therefore it is possible to reliably prevent the pillar portion from breaking when a large radially inward external force is applied to the body portion.

[0010] The groove portion may have a concave curved shape recessed radially inward when viewed in a vertical cross section along the bottle axial direction.

[0011] Since the groove portion has a concave curved shape that recesses radially inward when viewed in a longitudinal cross-section along the bottle axial direction, it is possible to provide flexibility to the corresponding part of the pillar portion, and when a large external force is applied radially inward to the body portion, the corresponding part of the pillar portion can be elastically deformed with good responsiveness. Effect of the Invention

[0012] According to one aspect of the present invention, it is possible to suppress breakage of the column portion. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1 is a side view of a bottle according to one embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] Hereinafter, a bottle according to one embodiment of the present invention will be described with reference to the drawings. The bottle 1 has a mouth 11, a shoulder 12, and a bottomed cylindrical body 13 that are connected in this order from top to bottom along the bottle axis O, and are integrally formed from a synthetic resin material, with the cross-sectional shape perpendicular to the bottle axis O being circular.

[0015] 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.

[0016] A plurality of panel portions 14 recessed radially inward are provided at intervals in the circumferential direction on the body portion 13. The portions of the body portion 13 located between adjacent panel portions 14 in the circumferential direction are pillar portions 15 extending in the direction of the bottle axis O. The circumferential size of the pillar portions 15 is smaller than the circumferential size of the panel portions 14. The panel portions 14 and the pillar portions 15 are provided over the entire area in the direction of the bottle axis O of the intermediate portion of the body portion 13 located between the upper end and the lower end.

[0017] When viewed from the radial direction, the panel portion 14 has a rectangular shape with two of its four sides extending in the bottle axis O direction and the remaining two sides extending in the circumferential direction. This gives the panel portion 14 four corners. When viewed from the radial direction, the panel portion 14 and the column portion 15 have a rectangular shape that is long in the bottle axis O direction. The corners of the panel portion 14 are formed in an R-shape that is curved outwardly in the circumferential direction when viewed from the radial direction.

[0018] A plurality of grooves 16, 17 are provided in the column portion 15 at positions away from the center in the bottle axis O direction, and extend over the entire circumferential length of the column portion 15. In the illustrated example, two grooves 16, 17 are provided in the column portion 15. The grooves 16, 17 are provided at intervals in the bottle axis O direction that are narrower than the groove width, or are provided in series in the bottle axis O direction. The grooves 16, 17 penetrate the column portion 15 in the circumferential direction and are open in the circumferential direction.

[0019] The shapes and sizes, such as the radius of curvature, of the plurality of grooves 16, 17 are the same as each other. The depth of the grooves 16, 17 is shallower than the depth of the panel portion 14. The depth of the grooves 16, 17 is, for example, 1 / 5 to 1 / 2 of the depth of the panel portion 14. The shapes and sizes, such as the radius of curvature, of the plurality of grooves 16, 17 may be different from each other.

[0020] The grooves 16 and 17 have a concave curved shape recessed radially inward in a vertical cross-sectional view along the bottle axis O. In the vertical cross-sectional view, the grooves 16 and 17 have a radius of curvature of 5 mm or more and 10 mm or less. In the column portion 15, a portion 15a located between adjacent groove portions 16, 17 in the bottle axis O direction (hereinafter referred to as the intermediate portion) exhibits a curved shape protruding radially outward in a vertical cross section along the bottle axis O direction. In the vertical cross section, the radius of curvature of the intermediate portion 15a is equal to or greater than the radius of curvature of the groove portions 16, 16. In the vertical cross section, the radius of curvature of the intermediate portion 15a is equal to or greater than 10 mm. In addition, in the vertical cross section, the intermediate portion 15a may extend linearly. In this case, each connection portion between the grooves 16, 17 and the intermediate portion 15a may have a curved shape protruding radially outward in the vertical cross section, and the radius of curvature may be 10 mm or more. Each groove 16, 17 and the intermediate portion 15a may be smoothly connected without any step.

[0021] The connection between the upper end of groove 17, which is the upper one of the multiple grooves 16 and 17, and column 15 has a curved shape that protrudes radially outward in the vertical cross section, and the radius of curvature is 10 mm or more. The upper end of groove 17 and column 15 are smoothly connected without any steps. The connection between the lower end of the groove 16 located at the lower of the multiple grooves 16, 17 and the column 15 presents a curved shape protruding radially outward in the vertical cross section, with a radius of curvature of 10 mm or more. The lower end of the groove 16 and the column 15 are smoothly connected without any steps.

[0022] Of the multiple grooves 16, 17, the deepest part 17a of the outer groove 17 located furthest outward in the direction of the bottle axis O is separated in the direction of the bottle axis O from the four corners of the panel part 14, which has a rectangular shape when viewed from the radial direction. The deepest part 17a of the outer groove 17 is circumferentially adjacent to a side extending in the direction of the bottle axis O among the four sides that define the panel part 14 when viewed from the radial direction. In this embodiment, the multiple grooves 16, 17 are provided in the upper part of the column portion 15, and the deepest part 17a of the outer groove 17 is located below the corner located at the upper end of the panel portion .

[0023] As described above, in the bottle 1 according to this embodiment, the column portion 15 is provided with multiple grooves 16, 17 spaced apart in the direction of the bottle axis O narrower than the groove width or arranged in a row in the direction of the bottle axis O, so that the stress generated in the portion of the column portion 15 where the multiple grooves 16, 17 are located (hereinafter referred to as the corresponding portion) can be dispersed and prevented from concentrating. As a result, even if a large external force is applied to the body portion 13 in the radially inward direction, the corresponding portion of the column portion 15 can be elastically deformed to absorb the external force, and the column portion 15 can be prevented from breaking even in a particularly lightweight bottle 1.

[0024] The corresponding portion of the pillar portion 15 is located at a position away from the center in the direction of the bottle axis O in the bottle axis O direction. Therefore, the corresponding portion of the pillar portion 15 is brought close to the corner of the panel portion 14 in the body portion 13 where stress is likely to concentrate in response to an external force directed radially inward. This, combined with the fact that the depth of the groove portions 16, 17 is shallower than the depth of the panel portion 14, enables the corresponding portion of the pillar portion 15 to elastically deform with good responsiveness when a large external force directed radially inward is applied to the body portion 13.

[0025] Since the deepest part 17a of the outer groove portion 17 is not adjacent in the circumferential direction to the corner of the panel portion 14 in the body portion 13, where stress is likely to concentrate due to an external force directed radially inward, and is spaced apart in the direction of the bottle axis O, it is possible to reliably prevent the column portion 15 from breaking when a large external force directed radially inward is applied to the body portion 13.

[0026] Since groove portions 16, 17 have a concave curved shape that recesses radially inward when viewed in a vertical cross-section along the bottle axis O, it is possible to provide flexibility to the corresponding portion of column portion 15, and when a large external force is applied to body portion 13 in the radially inward direction, the corresponding portion of column portion 15 can be elastically deformed with good responsiveness.

[0027] 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.

[0028] For example, the multiple grooves 16, 17 may be provided on both the upper part of the column portion 15 and the lower part of the column portion 15, or may be provided only on the lower part of the column portion 15. The column 15 may have three or more grooves 16, 17 at least on either the upper or lower part.

[0029] The position of the groove according to the present invention is not limited to that shown in the above embodiment, and may be changed as appropriate. For example, the body 13 may have a circumferential groove formed in the middle in the bottle axis O direction, and the body may be divided into an upper body and a lower body by the circumferential groove, and the groove may be provided in a column located in at least one of the upper body and the lower body.

[0030] The synthetic resin material from which the bottle 1 is made may be, for example, polyethylene terephthalate, polyethylene naphthalate, amorphous polyester, or a blend of these materials, and may be changed as appropriate. The bottle 1 is not limited to a single-layer structure, but may be a laminated structure having an intermediate layer. Examples of the intermediate layer include a layer made of a resin material having gas barrier properties, a layer made of recycled material, a layer made of a resin material having oxygen absorbing properties, a combination of these layers, a vapor deposition layer, etc.

[0031] 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. [Explanation of symbols]

[0032] 1 bottle 13 Torso 14 Panel section 15 Pillar section 16, 17 Groove 17a Deepest O Bottle stem

Claims

1. A plurality of panel portions recessed radially inward are provided at intervals in the circumferential direction on the bottomed cylindrical body portion, and a column portion extending in the bottle axial direction is formed between adjacent panel portions in the circumferential direction, When viewed from the radial direction, the panel portion has a rectangular shape with two of its four sides extending in the bottle axial direction and the remaining two sides extending in the circumferential direction, A plurality of grooves are provided in the column portion at positions away from the center in the bottle axial direction, the grooves extending over the entire circumferential length of the column portion and shallower than the depth of the panel portion. The multiple groove portions are provided at intervals in the axial direction of the bottle that are narrower than the groove width, or are provided in a row in the axial direction of the bottle.

2. 2. The bottle according to claim 1, wherein the deepest portion of the groove portion located furthest outward in the bottle axial direction among the plurality of groove portions is away in the bottle axial direction from four corners of the panel portion that is rectangular when viewed from the radial direction.

3. The bottle according to claim 1 or 2, wherein the groove portion has a concave curved shape recessed radially inward in a vertical cross-sectional view along the bottle axial direction.

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