bottle

Abstract

To provide a bottle that suppresses bending of a panel surface part when a vertical compressive load is applied after filling a content.SOLUTION: A plurality of panel surface parts 21 are provided in a shoulder part 12 in a circumferential direction, extending from one side to the other side in the circumferential direction as going from an upper part to a lower part, a reinforcement rib 22 is formed on at least a part of an outer peripheral part of the panel surface part 21, the reinforcement rib includes: a bent part 23 provided at a connecting part between a lower end part 21a extending in the circumferential direction of the outer peripheral part of the panel surface part and an end part 21b on the other side in the circumferential direction extending from one side to the other side in the circumferential direction as going from the upper part to the lower part; and a diagonal part 24 provided at a part facing the bent part in an opening direction of the bent part when the panel surface part is viewed from the outside in a radial direction, in the outer peripheral part of the panel surface part, at one end 21c in a circumferential direction extending from one side to the other side in the circumferential direction as going from the upper part to the lower part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] Conventionally, bottles have been known in which the mouth, shoulder, body, and bottom are connected in this order from top to bottom along the axial direction of the bottle and are integrally formed from a synthetic resin material, and the shoulder has multiple panel surface portions extending circumferentially from one side to the other as it goes from top to bottom. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-8536 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the conventional bottles described above, the panel surface is depressed when the pressure is reduced due to cooling after filling the contents, and when a compressive load is applied in the vertical direction in this state, there is a risk that the panel surface will be irreversibly bent. After careful consideration, the inventors of the present application discovered that this fold extends diagonally upward toward one side in the circumferential direction from the connection between the lower end portion of the outer periphery of the panel surface portion, which extends circumferentially, and the other end portion of the panel surface portion, which extends from one side in the circumferential direction to the other side as it goes from top to bottom.

[0005] The present invention provides a bottle that can prevent folding of a panel surface when a compressive load is applied in the vertical direction after filling the bottle with contents. [Means for solving the problem]

[0006] In a dispenser according to one aspect of the present invention, the mouth, shoulder, body, and bottom are arranged in a direction from top to bottom along the bottle axis. , mouth, shoulder, body, bottom and a diagonal portion provided at the end of the outer periphery of the panel surface portion that extends from one side in the circumferential direction to the other side in the circumferential direction as it moves from above to below, the diagonal portion being opposed to the diagonal portion in the direction of the opening of the diagonal portion when viewed from the outside in the radial direction. The bent portion is integrally provided on the outer periphery of the panel surface portion, at the connection portion and at the other end of the circumferential direction extending from one side to the other side in the circumferential direction as it goes from top to bottom, and the upper end of the bent portion is located lower than the upper end of the diagonal portion. .

[0007] Since a reinforcing rib having a bent portion and a diagonal portion is formed on at least a part of the outer periphery of the panel surface portion, it is possible to increase the rigidity of the portion of the panel surface portion located between the bent portion and the diagonal portion, and when a compressive load is applied in the vertical direction after the contents are filled, it is possible to prevent a fold from extending diagonally upward toward one side in the circumferential direction from the connection portion of the outer periphery of the panel surface portion. Since the reinforcing ribs are provided on the outer periphery of the panel surface, providing the reinforcing ribs makes it possible to prevent the panel surface from becoming difficult to deform, thereby ensuring vacuum absorption capacity.

[0008] The reinforcing rib may be provided at the lower end portion extending circumferentially of the outer periphery of the panel surface portion, and may have a lower horizontal portion extending circumferentially, the diagonal portion extending from one side to the other circumferentially as it goes from top to bottom, and the lower horizontal portion may circumferentially connect the lower ends of the bent portion and the diagonal portion.

[0009] The lower horizontal portion connects the lower ends of the bent portion and the diagonal portion circumferentially, and the lower horizontal portion, bent portion, and diagonal portion extend continuously over the entire length without branching, so that when a compressive load is applied in the vertical direction after the contents are filled, stress concentration points can be prevented from occurring on the outer periphery of the panel surface.

[0011] Since the upper end of the bent portion is located lower than the upper end of the diagonal portion, the provision of the reinforcing rib can reliably prevent the panel surface portion from becoming difficult to deform. [Effects of the Invention]

[0012] According to one aspect of the present invention, when a compressive load is applied in the vertical direction after the container is filled with contents, the occurrence of creases in the panel surface portion can be suppressed. [Brief explanation of the drawings]

[0013] [Figure 1] FIG. 1 is a side view of an embodiment of a bottle. [Figure 2] FIG. 2 is a top view of the bottle shown in FIG. 1. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, a bottle according to one embodiment of the present invention will be described with reference to the drawings. As shown in Figure 1, the bottle 1 of this embodiment has a mouth portion 11, a shoulder portion 12, a body portion 13, and a bottom portion 14, and these portions 11 to 14 are generally connected in this order with their respective central axes positioned on a common axis.

[0015] Hereinafter, the common axis will be referred to as the bottle axis O, the mouth 11 side along the bottle axis O will be referred to as the upper side, and the bottom 14 side will be referred to as the lower side, the direction along the bottle axis O will be referred to as the up-down direction, the direction that intersects the bottle axis O when viewed from the up-down direction will be referred to as the radial direction, and the direction that circles around the bottle axis O will be referred to as the circumferential direction.

[0016] Bottle 1 is formed integrally from a synthetic resin material by blow molding a preform formed into a cylindrical shape with a bottom by injection molding. A cap (not shown) is attached to mouth 11. Mouth 11 is sealed with the contents filled in bottle 1 at a high temperature (for example, about 40°C to 95°C). The mouth portion 11 has a circular cross section perpendicular to the bottle axis O. The shoulder portion 12 and the body portion 13 each have an angular cross section. The cross section of each of the shoulder portion 12 and the body portion 13 may be, for example, circular.

[0017] The bottom 14 is formed in a cup shape and includes a cylindrical heel portion 17 whose upper opening is connected to the lower opening of the body portion 13, and a bottom wall portion that closes the lower opening of the heel portion 17 and whose outer peripheral edge serves as a ground contact portion 18. A recess 19a that is recessed upward is formed in the bottom wall portion at a portion located radially inward of the ground contact portion 18.

[0018] A plurality of circumferential grooves 13a extending continuously over the entire circumferential length are provided at intervals in the vertical direction in the body portion 13. Note that the circumferential grooves 13a do not necessarily have to be provided, and the body portion 13 may also have a panel portion recessed radially inward. The body 13 is configured by alternately connecting flat portions 15 and pillar portions 16 in the circumferential direction. When viewed from the outside in the radial direction, the flat portions 15 and pillar portions 16 each have a rectangular shape that is long in the vertical direction. The circumferential size (width) of the flat portions 15 is wider than the width of the pillar portions 16.

[0019] The shoulder portion 12 extends radially inward as it extends upward. The vertical size of the shoulder portion 12 is larger than the vertical size of the body portion 13. The vertical size of the shoulder portion 12 may be smaller than the vertical size of the body portion 13. The upper portion of the shoulder portion 12, in a vertical cross section, has a curved shape that concaves radially inward, while the lower portion of the shoulder portion 12, in the vertical cross section, has a curved shape that bulges radially outward. The shoulder portion 12 may extend linearly or along a single arc over its entire length in the vertical direction. In the vertical cross section, the radius of curvature of the upper portion of the shoulder portion 12 is larger than the radius of curvature of the lower portion of the shoulder portion 12. In the vertical cross section, the radius of curvature of the upper portion of the shoulder portion 12 may be smaller than the radius of curvature of the lower portion of the shoulder portion 12.

[0020] A plurality of panel surface portions 21 are provided along the circumferential direction of the shoulder portion 12, extending from one side in the circumferential direction to the other side as they move from top to bottom. When viewed from the outside in the radial direction, the panel surface portions 21 have a rectangular shape that extends in the up-down direction while twisting in the circumferential direction. The circumferential size (width) of the panel surface portions 21 increases as they move from top to bottom. The panel surface portions 21 are provided over the entire length of the shoulder portion 12 in the up-down direction, excluding the upper end portion. As shown in FIG. 2, the panel surface portions 21 extend counterclockwise from the inside to the outside in the radial direction as viewed from above, but they may also extend clockwise.

[0021] The panel surface portions 21 adjacent to each other in the circumferential direction are connected in the circumferential direction such that the portions located above the lower end are spaced apart in the circumferential direction. The column portion 16 extends above the body portion 13 into this space. The upper end portion 16a of the column portion 16 that extends into the space decreases in circumferential size as it extends upward. It is not necessary to provide the shoulder portion 12 with the gap and the upper end portion 16a of the column portion 16.

[0022] A reinforcing rib 22 is formed on at least a part of the outer periphery of the panel surface portion 21. The reinforcing rib 22 is formed in a groove shape. The reinforcing rib 22 includes a bent portion 23, a diagonal portion 24, and a lower horizontal portion 25. The reinforcing rib 22 may be formed as a protrusion, and the lower horizontal portion 25 may not be provided.

[0023] The bent portion 23 is provided at a connection between a lower end portion 21a extending in the circumferential direction and an end portion (hereinafter referred to as a first circumferential end portion) 21b on the other side in the circumferential direction extending from one side to the other side in the circumferential direction as it goes from top to bottom, on the outer periphery of the panel surface portion 21. When the panel surface portion 21 is viewed from the outside in the radial direction, the bent portion 23 has an arc shape that is bent so as to jut out obliquely downward facing the other side in the circumferential direction.

[0024] In the illustrated example, the bent portion 23 is provided integrally with the connection portion and the first peripheral end portion 21b of the outer periphery of the panel surface portion 21. The portion of the bent portion 23 located at the first peripheral end portion 21b extends from one side to the other in the circumferential direction while moving from top to bottom. The upper end portion 23a of the bent portion 23 is located at the first peripheral end portion 21b of the outer periphery of the panel surface portion 21. The bent portion 23 is provided adjacent to the outer peripheral edge of the panel surface portion 21.

[0025] The diagonal portion 24 is provided at one end portion (hereinafter referred to as the second circumferential end portion) 21c of the outer periphery of the panel surface portion 21, which extends from one side in the circumferential direction to the other side in the circumferential direction as it goes from top to bottom, at a portion that faces the bent portion 23 in the opening direction of the bent portion 23 when viewed from the outside in the radial direction of the panel surface portion 21. For example, the diagonal portion 24 is located on the bisector of the interior angle of the bent portion 23 when viewed from the outside in the radial direction.

[0026] In the illustrated example, the diagonal portion 24 extends from one side to the other in the circumferential direction from top to bottom. The diagonal portion 24 is provided from the upper to lower end of the second peripheral end 21c of the outer periphery of the panel surface portion 21. When viewed from the outside in the radial direction, the diagonal portion 24 has a curved shape that protrudes toward one side in the circumferential direction. The upper end 24a of the diagonal portion 24 is located above the upper end 23a of the bent portion 23. The length of the diagonal portion 24 is at least twice the vertical distance between the upper end 23a of the bent portion 23 and the lower horizontal portion 25. The diagonal portion 24 is provided adjacent to the outer periphery of the panel surface portion 21.

[0027] The lower horizontal portion 25 is provided at the lower end 21a of the outer periphery of the panel surface portion 21 and extends in the circumferential direction. The lower horizontal portion 25 is spaced upward from the lower edge of the panel surface portion 21. The lower horizontal portion 25 may be provided adjacent to the lower edge of the panel surface portion 21. The lower horizontal portion 25 connects the lower ends of the bent portion 23 and the diagonal portion 24 in the circumferential direction. The lower horizontal portion 25, the bent portion 23, and the diagonal portion 24 extend continuously over their entire lengths without branching. The reinforcing rib 22 has a J-shape with the left and right facing in opposite directions when viewed from the outside in the radial direction. The widths of the lower horizontal portion 25, the bent portion 23, and the diagonal portion 24 are all equal to one another. The depths of the lower horizontal portion 25, the bent portion 23, and the diagonal portion 24 are all equal to one another.

[0028] As described above, in the bottle 1 according to this embodiment, the reinforcing rib 22 having the bent portion 23 and the diagonal portion 24 is formed on at least a part of the outer periphery of the panel surface portion 21. This makes it possible to increase the rigidity of the portion of the panel surface portion 21 located between the bent portion 23 and the diagonal portion 24, and when a compressive load is applied in the vertical direction after the contents are filled, it is possible to prevent the occurrence of a fold extending diagonally upward toward one side in the circumferential direction from the connection portion of the outer periphery of the panel surface portion 21.

[0029] The reinforcing ribs 22 are provided on the outer periphery of the panel surface portion 21, and by providing the reinforcing ribs 22, it is possible to prevent the panel surface portion 21 from becoming difficult to deform, and it is possible to ensure a vacuum absorption capacity.

[0030] The lower horizontal portion 25 connects the lower ends of the bent portion 23 and the diagonal portion 24 circumferentially, and the lower horizontal portion 25, bent portion 23, and diagonal portion 24 extend continuously over the entire length without branching, so that when a compressive load is applied in the vertical direction after the contents are filled, stress concentration points can be prevented from occurring on the outer periphery of the panel surface portion 21.

[0031] Since the upper end 23a of the bent portion 23 is located lower than the upper end 24a of the diagonal portion 24, the provision of the reinforcing rib 22 can reliably prevent the panel surface portion 21 from becoming difficult to deform.

[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] For example, in the above embodiment, the panel surface portion 21 is configured to extend counterclockwise from the inside to the outside in the radial direction when viewed from above, but the panel surface portion 21 may also extend clockwise from the inside to the outside in the radial direction when viewed from above, and in this case, the reinforcing rib 22 may have a J-shape when viewed from the outside in the radial direction.

[0034] The synthetic resin material forming the bottle 1 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, such as a layer made of a resin material with gas barrier properties, a layer made of recycled material, or a layer made of a resin material with oxygen absorbing properties.

[0035] In addition, within the scope of the spirit of the present invention, it is possible to replace the components in the above-described embodiments with well-known components as appropriate, and the above-described embodiments and the above-described variations may be combined as appropriate. [Explanation of symbols]

[0036] 1 bottle 11 Mouth 12 Shoulder 13 Torso 14 Bottom 21 Panel surface 21a Lower end 21b First circumferential end (end on the other side in the circumferential direction) 21c Second circumferential end (end on one side in the circumferential direction) 22 Reinforcing rib 23 Bend 23a Upper end of bent part 24 Diagonal 24a Upper end of diagonal section 25 Lower side 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, and are integrally formed from a synthetic resin material; The shoulder portion is provided with a plurality of panel surface portions extending from one side to the other side in the circumferential direction as it goes from above to below, a reinforcing rib is formed on at least a part of the outer periphery of the panel surface portion; The reinforcing rib is a bending portion that is provided at a connection between a lower end portion of the outer periphery of the panel surface portion that extends in the circumferential direction and an end portion on the other side of the circumferential direction that extends from one side in the circumferential direction to the other side as it goes from above to below, and that has an arc shape that is bent so as to protrude obliquely downward toward the other side in the circumferential direction when the panel surface portion is viewed from the outside in the radial direction; a diagonal portion provided at an end portion on one side of the outer periphery of the panel surface portion, the end portion extending from one side in the circumferential direction to the other side in the circumferential direction as it goes from above to below, the diagonal portion being provided at a portion facing the bent portion in an opening direction in which the bent portion is opened when the panel surface portion is viewed from the outside in the radial direction, the bent portion is integrally provided at the connection portion and at the other end of the outer circumferential portion of the panel surface portion, the end extending from one side in the circumferential direction to the other side as it moves from above to below, A bottle, wherein the upper end of the bent portion is located lower than the upper end of the diagonal portion.

2. The reinforcing rib is provided at a lower end portion extending in a circumferential direction of the outer periphery of the panel surface portion, and includes a lower horizontal portion extending in the circumferential direction, The diagonal portion extends from one side to the other side in the circumferential direction as it goes from top to bottom, The bottle according to claim 1 , wherein the lower horizontal portion connects lower ends of the bent portion and the diagonal portion in the circumferential direction.

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