Square Bottle

Abstract

To provide a square bottle capable of reinforcing a ground part, that hardly gets caught unexpectedly when being conveyed in a manufacturing line by a conveyance conveyor.SOLUTION: A synthetic resin square bottle 1 has a mouth part 2, a shoulder part 3, a trunk part 4, and a ground part 5a in this order. The trunk part 4 has four main face parts 4b, and four corner parts 4a. Intermittent recess parts 8 comprising a plurality of recess parts 8a intermittently arranged in a circumferential direction are provided at each of the corner parts 4a in a lower end part 4d of the trunk part 4. A smooth part 9 where the intermittent recess parts 8 are not provided is provided at a circumferential direction central part of each of the main face parts 4b in the lower end part 4d of the trunk part 4.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] In a rectangular bottle made of synthetic resin having a mouth, shoulder, body, and grounding part in that order, it is common to provide a recess in the body etc. to increase rigidity in order to suppress plastic deformation (permanent deformation) and maintain the appearance design (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-149126 A Summary of the Invention [Problem to be solved by the invention]

[0004] When the above-mentioned rectangular bottles are packed and stored in a cardboard box, they may be stored in a state in which they are placed on a stepped surface formed by the edge of the flap of the cardboard box, etc. In this case, if the rigidity of the grounding part is low, there is a risk that the grounding part will bend due to the stepped surface and undergo plastic deformation.

[0005] One possible solution is to provide a recess in the bottom end of the bottle body to reinforce the contact area, but this can cause the bottle to get caught unexpectedly when it is transported on a conveyor in the production line, which can lead to the bottle tipping over or becoming clogged.

[0006] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a square bottle that can reinforce the contact portion and is less likely to get caught unexpectedly when being transported on a transport conveyor in a production line. [Means for solving the problem]

[0007] The rectangular bottle of the present invention has a mouth portion, a shoulder portion, a body portion, and a ground portion in this order, the body portion having four main surface portions and four corner portions, each of the corner portions at the lower end portion of the body portion having an intermittent recess portion consisting of a plurality of recess portions arranged intermittently in the circumferential direction over the entire length of the corner portion, The above A smooth portion where the intermittent recesses are not provided is provided at the circumferential center of each of the main surface portions at the lower end. the lower portion of the body portion is tapered downward, an inclination angle of the lower end portion of the body portion is larger than an inclination angle of a portion of the lower portion of the body portion that is above the lower end portion, and each of the intermittent recesses is provided to be contained within the lower end portion of the body portion. It is a square bottle made of synthetic resin.

[0009] In addition, in the rectangular bottle of the present invention having the above configuration, it is preferable that each of the plurality of recesses forming each of the intermittent recesses is a rectangular bottle comprising dimples. Effect of the Invention

[0010] According to the present invention, it is possible to provide a rectangular bottle that has a reinforced contact portion and is less likely to get caught unexpectedly when being transported on a transport conveyor in a production line. [Brief description of the drawings]

[0011] [Figure 1] 1 is a side view showing a rectangular bottle of one embodiment of the present invention from a first direction. [Diagram 2] 2 is a side view showing the rectangular bottle shown in FIG. 1 from a second direction. [Diagram 3] FIG. 2 is a partially enlarged view of FIG. [Figure 4] FIG. 3 is a partially enlarged view of FIG. [Diagram 5] FIG. 2 is a bottom view of the rectangular bottle shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0013] 1 to 5, in one embodiment of the present invention, a rectangular bottle 1 has a mouth 2, a shoulder 3, a body 4, and a bottom 5 facing downward in this order, with the body 4 having four corners 4a. The bottom 5 is made up of an annular ground contact portion 5a connected to the lower end of the body 4, and a bottom recess 5b connected to the inner peripheral edge of the ground contact portion 5a and recessed upward. The ground contact portion 5a has a shape that allows it to be grounded on a planar support surface over its entire circumference, but is not limited to this.

[0014] In this embodiment, the vertical direction means the direction along the central axis O of the rectangular bottle 1, the upward direction means the direction from the bottom 5 toward the mouth 2, the downward direction means the opposite direction, the radial direction means the direction along a straight line perpendicular to the central axis O, and the circumferential direction means the direction going around the central axis O.

[0015] In this embodiment, the rectangular bottle 1 has a flat shape in which its width when viewed in a first direction D1 (see Figure 5) perpendicular to the up-down direction (see Figure 1) is greater than its width when viewed in a second direction D2 (see Figure 5) perpendicular to both the up-down direction and the first direction D1 (see Figure 2), but this is not limited to the above and the bottle may also have a non-flat configuration.

[0016] The rectangular bottle 1 is made of synthetic resin and is formed, for example, by blow molding. Examples of blow molding include biaxial stretch blow molding and extrusion blow molding. The synthetic resin from which the rectangular bottle 1 is formed is not particularly limited, and examples include polyesters such as polyethylene terephthalate, polyolefins such as polypropylene and polyethylene, etc. The rectangular bottle 1 may have a single-layer structure or a laminated structure.

[0017] In this embodiment, the contents contained in the rectangular bottle 1 are liquids. Note that the contents are not limited to liquids and may be, for example, powders. The contents may be, for example, food such as beverages, cosmetics, cleaning agents, medicines, etc., and are not particularly limited.

[0018] The mouth portion 2 is cylindrical with the central axis O as its center, and has a male thread 2a on the outer circumferential surface for engaging a cap (not shown). The engaging structure for engaging the cap to the mouth portion 2 is not limited to the male thread 2a, but may be, for example, an annular protrusion for engaging the cap by plugging. The mouth portion 2 may also be a tubular shape other than a cylindrical shape. The cap is not limited to a closure cap for simply closing the mouth portion 2, but may be, for example, a discharge cap having a discharge port for discharging the contents. In this embodiment, the mouth portion 2 has a neck ring 2b below the male thread 2a, but is not limited thereto.

[0019] The shoulder portion 3 is connected to the lower end of the mouth portion 2 and expands in diameter downward. The lower end of the shoulder portion 3 is connected to the upper end of the body portion 4. In this embodiment, the lower end of the shoulder portion 3 is connected to the upper end of the body portion 4 via a step portion 6 that expands in diameter, but this is not limiting and the step portion 6 may not be provided.

[0020] The body 4 is made up of four main surface portions 4b, each of which is made up of two main surface portions 4b facing each other in a first direction D1 perpendicular to the vertical direction and two main surface portions 4b facing each other in a second direction D2 perpendicular to both the vertical direction and the first direction D1, and four corner portions 4a, and each corner portion 4a connects two adjacent main surface portions 4b in the circumferential direction. Each corner portion 4a is in the shape of a flat band having a smaller width than any of the main surface portions 4b in a portion excluding the lower portion (heel portion) 4c of the body 4. Instead of being in the shape of a flat band, the corner portion 4a may be in the shape of a curved band curved in a circular arc shape or the like when viewed from above. Each corner portion 4a has a constant width in the vertical direction in a portion excluding the lower portion 4c of the body 4, but in the lower portion 4c of the body 4, the corner portion 4a widens in the circumferential direction toward the bottom. Each corner portion 4a may be configured to have a constant width in the up-down direction at the lower portion 4c of the body portion 4, or may be configured to have a width that decreases circumferentially downward at the lower portion 4c of the body portion 4.

[0021] Each of the main surface portions 4b has a vacuum absorption panel 7 recessed in the radial direction. The outer peripheral edge 7a of the vacuum absorption panel 7 forms a step, and the vacuum absorption panel 7 can easily deform toward the inside of the bottle as the pressure inside the bottle decreases. Note that the configuration may not include the vacuum absorption panel 7, or may include the vacuum absorption panel 7 on only a portion of the four main surface portions 4b. The shape, arrangement, size, etc. of the vacuum absorption panel 7 can be set as appropriate.

[0022] To improve rigidity, the body portion 4 may be configured to have an uneven shape such as convex or concave circumferential ribs extending in the circumferential direction or convex or concave vertical ribs extending in the up-down direction.

[0023] In this embodiment, the lower portion 4c of the body 4 (see Figs. 3 and 4) narrows downward. The lower portion 4c of the body 4 may narrow linearly or may narrow radially outward in a curved shape. The lower portion 4c of the body 4 is not limited to a configuration in which the diameter narrows downward, and may have a constant outer diameter in the vertical direction. The lower end portion 4d of the body 4 (see Figs. 3 and 4) is connected to the ground contact portion 5a. The lower end portion 4d of the body 4 narrows downward in a curved shape in this embodiment. The lower end portion 4d of the body 4 is a part of the lower portion 4c of the body 4. The inclination angle of the lower end portion 4d of the body 4 is larger than the inclination angle of the portion of the lower portion 4c of the body 4 above the lower end portion 4d, but is not limited thereto, and the inclination angles may be the same.

[0024] In this embodiment, the rectangular bottle 1 has intermittent recesses 8 consisting of a plurality of recesses 8a (see FIG. 5) arranged intermittently in the circumferential direction at each of the corners 4a at the lower end 4d of the body 4, and has a smooth portion 9 without intermittent recesses 8 at the circumferential center of each of the main surfaces 4b at the lower end 4d of the body 4. In this way, by providing the intermittent recesses 8 at each of the corners 4a at the lower end 4d of the body 4, the ground contact portion 5a can be reinforced. Furthermore, by providing the smooth portion 9 at the circumferential center of each of the main surfaces 4b at the lower end 4d of the body 4, it is possible to prevent the rectangular bottle 1 from being unexpectedly caught when it is transported by a transport conveyor in the production line. That is, when the rectangular bottle 1 is transported in the first direction D1, the lower ends at the circumferential center of the two main surface portions 4b facing each other in the second direction D2 do not have recesses 8a, so that the bottle is less likely to get caught, and when the rectangular bottle 1 is transported in the second direction D2, the lower ends at the circumferential center of the two main surface portions 4b facing each other in the first direction D1 do not have recesses 8a, so that the bottle is less likely to get caught. Note that, although the number of recesses 8a forming each intermittent recess 8 is eight in this embodiment, the number is not limited to eight, and may be two or more.

[0025] In this embodiment, each of the intermittent recesses 8 is provided only in the corners 4a of the lower end 4d of the body 4. This makes it even less likely that the intermittent recesses 8 will get caught. However, each of the intermittent recesses 8 may be provided so as to slightly protrude from the corners 4a of the lower end 4d of the body 4. In this embodiment, the body 4 is also flattened at its lower end 4d, and the lower end of the lower end 4d has a substantially track-like shape including two straight line portions facing each other in the minor axis direction, two curved portions of a first curvature facing each other in the major axis direction, and four curved portions of a second curvature larger than the first curvature corresponding to the corners 4a, but is not limited thereto.

[0026] In this embodiment, each of the intermittent recesses 8 is provided so as to fit within the lower end 4d of the body 4. Therefore, the ground contact portion 5a can be reinforced efficiently, and snagging can be prevented even more. Each of the intermittent recesses 8 is not limited to being provided so as to fit within the lower end 4d of the body 4, but may be provided so as to protrude from the lower end 4d of the body 4, that is, the portion that narrows in diameter in a curved downward direction. In this case, each of the intermittent recesses 8 may be provided so as to protrude to a portion above the lower end 4d in the lower portion 4c of the body 4. From the viewpoint of preventing snagging, it is preferable that the recesses do not protrude into the ground contact portion 5a.

[0027] In this embodiment, each of the recesses 8a forming each intermittent recess 8 is a dimple, that is, a small recess 8a having a shape such as a circle, semicircle, or square, with a small difference in size between the vertical and circumferential directions. Therefore, the ground contact portion 5a can be reinforced efficiently. However, each of the recesses 8a forming each intermittent recess 8 is not limited to this, and may be elongated in the vertical direction or in the circumferential direction, for example.

[0028] In this embodiment, the multiple recesses 8a forming each intermittent recess 8 are arranged intermittently at equal intervals in the circumferential direction over the entire length of the corner portion 4a. Therefore, the grounding portion 5a can be reinforced efficiently. Note that the multiple recesses 8a forming each intermittent recess 8 are not limited to this, and may be arranged intermittently in the circumferential direction over only a portion of the entire length of the corner portion 4a, or may be arranged intermittently at different intervals in the circumferential direction.

[0029] In this embodiment, the recesses 8a forming each intermittent recess 8 have the same shape and size. Therefore, the grounding portion 5a can be reinforced efficiently. However, the recesses 8a forming each intermittent recess 8 are not limited to this, and may have different shapes or sizes, for example.

[0030] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and scope of the present invention.

[0031] Therefore, the rectangular bottle 1 of the above-described embodiment can be modified in various ways, for example as described below.

[0032] The rectangular bottle 1 of the above-mentioned embodiment can be modified in various ways as long as it is a rectangular bottle 1 made of synthetic resin having a mouth portion 2, a shoulder portion 3, a body portion 4, and a ground portion 5a in this order, the body portion 4 having four main surface portions 4b and four corner portions 4a, each of the corner portions 4a at the lower end portion 4d of the body portion 4 having intermittent recesses 8 consisting of a plurality of recesses 8a arranged intermittently in the circumferential direction, and a smooth portion 9 at the circumferential center of each of the main surface portions 4b at the lower end portion 4d of the body portion 4 where no intermittent recesses 8 are provided.

[0033] For example, the shape of the bottom recess 5b can be set appropriately. Also, the bottom 5 is not limited to a configuration having the bottom recess 5b. Also, the diameter dimension of the mouth 2 can be set appropriately. Also, the shape of the shoulder 3 can be set appropriately.

[0034] Moreover, in the rectangular bottle 1 of the embodiment described above, it is preferable that each of the intermittent recesses 8 is provided so as to be contained within the lower end portion 4d of the body portion 4 in the above configuration.

[0035] Moreover, in the rectangular bottle 1 of the embodiment described above, in the above configuration, it is preferable that each of the plurality of recesses 8a forming each of the intermittent recesses 8 is a rectangular bottle 1 formed of a dimple. [Explanation of symbols]

[0036] 1 Square bottle 2 Mouth 2a Male thread 2b Neck ring 3 Shoulder 4. Torso 4a Corner section 4b Main surface part 4c Lower torso 4d Lower end of the body 5 bottom 5a Grounding part 5b Bottom recess 6 steps 7. Vacuum Absorption Panel 7a Outer edge of vacuum absorption panel 8 Intermittent recess 8a Recess 9 Smooth section O center axis D1 1st direction D2 2nd direction

Claims

1. The device has a mouth portion, a shoulder portion, a body portion, and a ground portion in this order. The body portion has four main surfaces and four corners, Each of the corner portions at the lower end of the body portion has an intermittent recess portion including a plurality of recess portions arranged intermittently in a circumferential direction over an entire length of the corner portion, a smooth portion in which the intermittent recess is not provided, at a circumferential center of each of the main surface portions at the lower end of the body portion; The lower portion of the body portion is tapered downward, an inclination angle of the lower end of the body portion is larger than an inclination angle of a portion of the lower part of the body portion that is above the lower end, A rectangular bottle made of synthetic resin, wherein each of the intermittent recesses is provided to fit within the lower end portion of the body portion.

2. 2. The rectangular bottle according to claim 1, wherein each of the plurality of recesses forming each of the intermittent recesses is a dimple.

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