Bottle

Abstract

To provide a bottle capable of securing rigidity of smooth portions adjacent to peripheral grooves in the vertical direction in a barrel part while suppressing time required for discharging a cleaning liquid within the bottle and coping with environment conservation.SOLUTION: In a bottle, multiple circumferential grooves 21 continuously extending over the entire length in the circumferential direction are formed at intervals in the vertical direction on a barrel part 13 extending in the vertical direction, and multiple recessed ribs 23 extending in a direction crossing both of the circumferential direction and the vertical direction are formed at intervals in the circumferential direction on smooth portions 15a adjacent to the circumferential grooves in the vertical direction in the barrel part.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a bottle.

Background Art

[0002] In recent years, from the perspective of environmental protection, weight reduction of containers has been strongly demanded. However, generally, as the weight is reduced, the physical properties of the containers deteriorate, so it is necessary to compensate for this. One of the physical properties of the container that deteriorates with weight reduction is the rigidity of the body portion. In order to increase the rigidity of the body portion, for example, as shown in Patent Document 1 below, a bottle having a plurality of circumferential grooves provided in the body portion is known. However, depending on the degree of weight reduction, it is conceivable that the rigidity of the smooth portion adjacent to the circumferential groove in the vertical direction in the body portion becomes low. In this case, when the body portion is gripped, the smooth portion may be greatly deformed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] As a countermeasure, it is conceivable to provide circumferential grooves also in the smooth portion of the body portion. However, when the number of circumferential grooves increases, in the bottle washing step before filling the contents, when the bottle is inverted to drain the cleaning liquid, the cleaning liquid in the bottle may be caught in the circumferential grooves, and it may take time to drain the cleaning liquid.

[0005] The present invention provides an environmentally friendly bottle that can suppress the time required to drain the cleaning liquid in the bottle while ensuring the rigidity of the smooth portion adjacent to the circumferential groove in the vertical direction in the body portion.

Means for Solving the Problems

[0006] The bottle according to one aspect of the present invention has a plurality of circumferential grooves continuously extending over the entire circumferential length formed at intervals in the vertical direction in a body portion extending in the vertical direction, and in the body portion, a plurality of concave ribs extending in a direction intersecting the circumferential direction and the vertical direction are formed at intervals in the circumferential direction on smooth portions adjacent to the circumferential grooves in the vertical direction.

[0007] Since a plurality of concave ribs are formed at intervals in the circumferential direction on the smooth portion of the body portion, the rigidity of the smooth portion can be ensured. Also, since the plurality of concave ribs extend in a direction intersecting the circumferential direction and the vertical direction, when the bottle is inverted and the cleaning liquid is discharged in the bottle cleaning process before filling the contents, the cleaning liquid in the bottle easily flows toward the mouth portion along the concave ribs and is less likely to be caught by the circumferential grooves, and the time required to discharge the cleaning liquid in the bottle can be suppressed.

[0008] Each direction in which the plurality of concave ribs extend and which intersects the circumferential direction and the vertical direction may be the same as each other.

[0009] Since each direction in which the plurality of concave ribs extend and which intersects the circumferential direction and the vertical direction is the same as each other, it is possible to make it difficult for a portion where stress concentrates to occur in the smooth portion of the body portion.

[0010] The circumferential size of the concave rib may be larger than the circumferential interval between the concave ribs adjacent to each other in the circumferential direction.

[0011] Since the circumferential size of the concave rib is larger than the circumferential interval between the concave ribs adjacent to each other in the circumferential direction, the rigidity of the smooth portion of the body portion can be surely ensured, and the time required to discharge the cleaning liquid in the bottle can be surely suppressed.

[0012] A plurality of the concave ribs are separately formed at intervals in the circumferential direction on two smooth portions sandwiching one circumferential groove in the vertical direction, and the intervals between the concave ribs adjacent to each other in the circumferential direction may be located at the same circumferential position in two smooth portions adjacent to each other in the vertical direction.

[0013] Since the intervals between the concave ribs adjacent to each other in the circumferential direction are located at the same circumferential positions in the two smooth portions adjacent to each other in the vertical direction, after the cleaning liquid in the bottle reaches the interval between the concave ribs adjacent to each other in the circumferential direction along the concave ribs, when flowing down toward the mouth portion, it is easier to merge with the cleaning liquid that has reached the interval between the concave ribs adjacent to each other in the circumferential direction along the concave ribs in another smooth portion adjacent to the mouth portion side with respect to this smooth portion, and the time required to discharge the cleaning liquid in the bottle can be surely suppressed.

[0014] The depth of the concave rib may be shallower than the depth of the circumferential groove.

[0015] Since the depth of the concave rib is shallower than the depth of the circumferential groove, it becomes possible to suppress the stress from concentrating on the portion located between the concave ribs adjacent to each other in the circumferential direction in the smooth portion, and the rigidity of the smooth portion can be surely ensured. Also, for example, when a label is attached to the smooth portion, it is possible to suppress the occurrence of wrinkles caused by the concave ribs on the label.

Advantages of the Invention

[0016] According to the above aspect of the present invention, a bottle capable of responding to environmental protection can be obtained, which can suppress the time required to discharge the cleaning liquid in the bottle while ensuring the rigidity of the circumferential groove and the smooth portion adjacent to it in the vertical direction in the body portion.

Brief Description of the Drawings

[0017]

Figure 1

Modes for Carrying Out the Invention

[0018] Hereinafter, with reference to the drawings, an embodiment of the present invention will be described. As shown in FIG. 1, the bottle 1 of this embodiment includes a mouth portion 11, a shoulder portion 12, a body portion 13, and a bottom portion 14. These 11 to 14 are arranged in this order in a schematic configuration with their respective central axes positioned on a common axis.

[0019] Hereinafter, the common axis is referred to as the bottle axis O. The mouth portion 11 side is the upper side and the bottom portion 14 side is the lower side along the bottle axis O direction. The direction along the bottle axis O is referred to as the vertical direction. Also, the direction intersecting the bottle axis O as viewed from the vertical direction is referred to as the radial direction, and the direction orbiting around the bottle axis O as viewed from the vertical direction is referred to as the circumferential direction. The bottle 1 is formed by blow molding a preform formed in a bottomed cylindrical shape by injection molding, and is integrally formed of a synthetic resin material such as polyethylene terephthalate. The ratio of the weight of the bottle 1 to the content volume (full filling volume) of the bottle 1 is 0.027 g / ml or less. The mouth portion 11, the shoulder portion 12, the body portion 13, and the bottom portion 14 each have a circular cross-sectional shape perpendicular to the bottle axis O.

[0020] The body portion 13 includes an upper body portion 15 extending downward from the shoulder portion 12, a lower body portion 16 extending upward from the bottom portion 14, and a constriction portion 17 connecting the upper body portion 15 and the lower body portion 16 to each other.

[0021] The vertical size of the upper body portion 15 is slightly smaller than the vertical size of the lower body portion 16. A plurality of first circumferential grooves (circumferential grooves) 21 continuously extending over the entire circumferential length are formed in the upper body portion 15 at intervals in the vertical direction. A plurality of second circumferential grooves 22 continuously extending over the entire circumferential length are formed in the lower body portion 16 at intervals in the vertical direction. The interval between adjacent first circumferential grooves 21 in the vertical direction is narrower than the interval between adjacent second circumferential grooves 22 in the vertical direction.

[0022] In the upper body portion 15, a plurality of concave ribs 23 extending in a direction intersecting the circumferential direction and the vertical direction are formed at intervals in the circumferential direction on the smooth portion 15a adjacent to the first circumferential groove 21 in the vertical direction. The smooth portions 15a are arranged in plurality at intervals in the vertical direction. A plurality of concave ribs 23 are separately formed at intervals in the circumferential direction on two smooth portions 15a that sandwich one first circumferential groove 21 in the vertical direction. In the illustrated example, a plurality of concave ribs 23 are formed at intervals in the circumferential direction on all the smooth portions 15a. Note that it is sufficient if a plurality of concave ribs 23 are formed on at least one of the plurality of smooth portions 15a.

[0023] The directions (hereinafter referred to as the inclination directions of the concave ribs 23) in which the plurality of concave ribs 23 extend and intersect with respect to the circumferential direction and the vertical direction are the same as each other. The inclination angles of the plurality of concave ribs 23 with respect to the circumferential direction are the same as each other. Note that the inclination direction of at least one of the plurality of concave ribs 23 formed on one smooth portion 15a may be different from the inclination directions of the other concave ribs 23. When the inclination directions of all the plurality of concave ribs 23 formed on one smooth portion 15a are the same, among the plurality of smooth portions 15a, the inclination direction of the concave ribs 23 formed on one smooth portion 15a may be different from the inclination directions of the concave ribs 23 formed on the other smooth portions 15a.

[0024] The circumferential size of the concave rib 23 is larger than the circumferential interval between the concave ribs 23 adjacent to each other in the circumferential direction. Note that the former size may be equal to or less than the latter size. The circumferential sizes of the plurality of concave ribs 23 are the same as each other. The plurality of concave ribs 23 are provided at the same intervals in the circumferential direction. The groove lengths of the plurality of concave ribs 23 are the same as each other. The interval is smaller than the groove length of the concave rib 23. Note that the interval may be equal to or greater than the groove length of the concave rib 23.

[0025] The interval between the concave ribs 23 adjacent to each other in the circumferential direction is located at the same circumferential position in two smooth portions 15a adjacent to each other in the vertical direction. That is, the interval between the concave ribs 23 adjacent to each other in the circumferential direction is located at the same circumferential position as the interval provided in the other smooth portions 15a adjacent to each other with the first circumferential groove 21 sandwiched in the vertical direction over the entire circumference. The circumferential central portions of the adjacent intervals sandwiching the first circumferential groove 21 in the vertical direction are located at the same circumferential position. The circumferential central portions of the adjacent concave ribs 23 sandwiching the first circumferential groove 21 in the vertical direction are located at the same circumferential position.

[0026] Incidentally, the circumferential central portions of the adjacent intervals sandwiching the first circumferential groove 21 in the vertical direction may be separated from each other in the circumferential direction. For example, the intervals between the adjacent concave ribs 23 adjacent to each other in the circumferential direction may be located at the same circumferential position as the concave ribs 23 provided in the other smooth portions 15a sandwiching the first circumferential groove 21 in the vertical direction over the entire circumference, or only a part of the intervals between the adjacent concave ribs 23 adjacent to each other in the circumferential direction may be located at the same circumferential position as the concave ribs 23 provided in the other smooth portions 15a sandwiching the first circumferential groove 21 in the vertical direction.

[0027] The depth of the concave rib 23 is shallower than the depth of the first circumferential groove 21. The depth of the concave rib 23 is 0.4 mm or more and 1.0 mm or less, and is 0.13 times or more and 0.67 times or less of the depth of the first circumferential groove 21. The groove width of the concave rib 23 is narrower than the groove width of the first circumferential groove 21. Incidentally, the groove width and groove depth of the concave rib 23 may be the same as or larger than the groove width and groove depth of the first circumferential groove 21, respectively. The vertical central regions of the concave rib 23 and the smooth portion 15a overlap. The vertical size of the concave rib 23 is larger than half of the vertical size of the smooth portion 15a.

[0028] The rib row 24 composed of a plurality of concave ribs 23 provided at intervals in the circumferential direction is provided one by one in one smooth portion 15a, and two or more, preferably four or more (five in the illustrated example), are provided at intervals in the vertical direction on the upper body portion 15.

[0029] In the illustrated example, the outer diameter of the smooth portion 15a is, for example, about 76 mm, the circumferential size of the concave rib 23 is, for example, about 19 mm, one rib row 24 includes eight concave ribs 23, and the interval between the circumferentially adjacent concave ribs 23 is, for example, about 10.5 mm. In one rib row 24, when the sum of the circumferential sizes of the plurality of concave ribs 23 is A and the sum of the intervals between the circumferentially adjacent concave ribs 23 is B, A / B satisfies 1.5 or more and 1.9 or less.

[0030] As described above, according to the bottle 1 according to the present embodiment, since the plurality of concave ribs 23 are formed at intervals in the circumferential direction on the smooth portion 15a of the body portion 13, the rigidity of the smooth portion 15a can be ensured. Further, since the plurality of concave ribs 23 extend in a direction intersecting the circumferential direction and the vertical direction, when the bottle 1 is placed in an inverted posture and the cleaning liquid is discharged in the bottle cleaning step before filling the contents, the cleaning liquid in the bottle 1 easily flows along the concave ribs 23 toward the mouth portion 11 and is less likely to be caught by the first circumferential groove 21, and the time required to discharge the cleaning liquid in the bottle 1 can be suppressed.

[0031] Since the directions in which the plurality of concave ribs 23 extend and intersect the circumferential direction and the vertical direction are the same as each other, it is possible to make it difficult for a portion where stress concentrates to occur in the smooth portion 15a of the body portion 13.

[0032] Since the circumferential size of the concave rib 23 is larger than the circumferential interval between the circumferentially adjacent concave ribs 23, the rigidity of the smooth portion 15a of the body portion 13 can be surely ensured, and the time required to discharge the cleaning liquid in the bottle 1 can be surely suppressed.

[0033] Since the intervals between the concave ribs 23 adjacent to each other in the circumferential direction are located at the same circumferential positions in the two smooth portions 15a adjacent to each other in the vertical direction, when the cleaning liquid in the bottle 1 reaches the interval between the concave ribs 23 adjacent to each other in the circumferential direction along the concave ribs 23 and then flows down toward the mouth portion 11, it is easy to merge with the cleaning liquid that has reached the interval between the concave ribs 23 adjacent to each other in the circumferential direction along the concave ribs 23 in another smooth portion 15a adjacent to the mouth portion 11 side with respect to this smooth portion 15a, and the time required to discharge the cleaning liquid in the bottle 1 can be surely suppressed.

[0034] Since the depth of the concave rib 23 is shallower than the depth of the first circumferential groove 21, it becomes possible to suppress stress from concentrating on the portion located between the concave ribs 23 adjacent to each other in the circumferential direction in the smooth portion 15a, and the rigidity of the smooth portion 15a can be surely ensured. Further, for example, when a label is attached to the smooth portion 15a, it is possible to suppress the occurrence of wrinkles caused by the concave ribs 23 on the label.

[0035] Note that the technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

[0036] A body portion having no lower body portion 16 and constriction portion 17 may be employed. The concave rib 23 may be formed on the lower body portion 16.

[0037] In addition, within the scope not departing from the spirit of the present invention, it is possible to appropriately replace the components in the above-described embodiments with well-known components, and the above-described embodiments and modification examples may be appropriately combined.

[0038] Aspects of the present invention are as follows, for example. <1> A plurality of circumferential grooves continuously extending over the entire circumferential length are formed at intervals in the vertical direction in a body portion extending in the vertical direction. In the barrel portion, a plurality of concave ribs extending in a direction intersecting the circumferential direction and the vertical direction are formed at intervals in the circumferential direction on the smooth portion adjacent to the circumferential groove in the vertical direction, the bottle. <2> For each direction in which the plurality of concave ribs extend and which intersects the circumferential direction and the vertical direction, they are the same as each other, the bottle according to <1>. <3> The circumferential size of the concave rib is larger than the circumferential interval between the concave ribs adjacent to each other in the circumferential direction, the bottle according to <1> or <2>. <4> On the two smooth portions sandwiching one circumferential groove in the vertical direction, a plurality of the concave ribs are separately formed at intervals in the circumferential direction, The interval between the concave ribs adjacent to each other in the circumferential direction is located at the same circumferential position in the two smooth portions adjacent to each other in the vertical direction, the bottle according to any one of <1> to <3>. <5> The depth of the concave rib is shallower than the depth of the circumferential groove, the bottle according to any one of <1> to <4>.

Explanation of reference numerals

[0039] 1 bottle 13 barrel 15a smooth portion 21 circumferential groove (first circumferential groove) 23 concave rib

Claims

1. A plurality of circumferential grooves continuously extending over the entire circumferential length are formed at intervals in the vertical direction in a barrel portion extending in the vertical direction. In the barrel portion, a plurality of concave ribs extending in a direction intersecting both the circumferential direction and the vertical direction are formed at intervals in the circumferential direction on smooth portions adjacent to the circumferential grooves in the vertical direction. A bottle.

2. The bottle according to claim 1, wherein each direction in which the plurality of concave ribs extend, intersecting both the circumferential direction and the vertical direction, is the same as each other.

3. The bottle according to claim 1 or 2, wherein the circumferential size of the concave rib is larger than the circumferential interval between the concave ribs adjacent to each other in the circumferential direction.

4. A plurality of the concave ribs are separately formed at intervals in the circumferential direction on two smooth portions sandwiching one of the circumferential grooves in the vertical direction. The bottle according to claim 1 or 2, wherein the intervals between the concave ribs adjacent to each other in the circumferential direction are located at the same circumferential position in two smooth portions adjacent to each other in the vertical direction.

5. The bottle according to claim 1 or 2, wherein the depth of the concave rib is shallower than the depth of the circumferential groove.

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