JP6902933B2 - Bottle - Google Patents

Description

The present invention relates to bottles.

Conventionally, a bottle having a body portion having a polygonal shape having a number of angles of 4 or more and 32 or less in a cross-sectional view, as shown in Patent Document 1 below, has been known.

Japanese Unexamined Patent Publication No. 2006-335357

However, in the conventional bottle, there is room for improvement in improving the decompression absorption capacity.

The present invention has been made in consideration of such circumstances, and an object of the present invention is to provide a bottle capable of improving the decompression absorption capacity.

In order to solve the above problems and achieve such an object, the bottle of the present invention has a mouth, a shoulder, a body, and a bottom in this order from top to bottom along the bottle axis direction. The body is integrally formed of a synthetic resin material as well as being connected in series, and the body portion includes a pressure reducing absorption panel and a pressure reducing absorption unit formed by alternately connecting columns in the circumferential direction, and the pressure reducing absorption panel and the said. The pillars gradually extend from one side to the other in the circumferential direction from the bottom to the top, and the top surface of the pillars facing outward in the radial direction has a longitudinal groove extending in the longitudinal direction. The inner surface of the flutes is formed in a curved shape that is recessed inward in the radial direction, and both ends in the width direction on the top surface of the pillar are curved surfaces that project outward in the radial direction. Jo the formed, Ri Tsurana the vacuum panels and the circumferential direction through the curved portion and the pillar portion, said body portion includes an upper body portion extending downward from the shoulder, upward from said bottom The lower body portion is provided with a lower body portion extending toward the surface, the length of the lower body portion in the bottle axial direction is longer than the length of the upper body portion in the bottle axial direction, and the decompression absorption unit is the lower body portion. A plurality of second concave grooves extending from one side in the circumferential direction to the other side are gradually formed in the upper body portion from the lower side to the upper side at intervals in the circumferential direction. It is characterized by.

According to the present invention, since the body portion is provided with the decompression absorption portion, when the pressure inside the bottle is reduced, not only the decompression absorption panel is deformed inward in the radial direction, but also the entire decompression absorption portion is rotated in the circumferential direction. It can also be deformed so as to be twisted, and the decompression absorption capacity can be improved.
Since the vertical groove is formed in the column, it is possible to improve the rigidity of the column against a load in the radial direction, for example, and even if the decompression absorption part is greatly twisted and deformed due to the decompression in the bottle, the column is However, for example, it is possible to suppress bending and deformation, and the reduced pressure absorption capacity can be reliably improved.
The inner surface of the flutes is formed in a curved surface shape that is recessed inward in the radial direction, and both ends in the width direction on the top surface of the pillar portion are formed in a curved surface shape that protrudes outward in the radial direction. Furthermore, since the decompression absorption panel and the pillar portion are connected in the circumferential direction via the curved surface portion, it is possible to eliminate the corner portion where stress tends to concentrate from the decompression absorption portion, and when the pressure is reduced in the bottle, The stress generated in the reduced pressure absorbing part can be reduced. Therefore, when the pressure in the bottle is reduced, the entire pressure-reducing absorption portion can be flexibly deformed, and the pressure-reducing absorption capacity can be further and surely improved.

Here, of the opening peripheral edges of the vertical groove portion on the top surface of the pillar portion, each portion located at both ends in the width direction and extending in the longitudinal direction is separately located at both ends in the width direction on the top surface. You may.

In this case, since the opening peripheral edges of the vertical groove portion on the top surface of the pillar portion are located at both ends in the width direction on the top surface, the top surface of the pillar portion is formed in a convex curved surface shape in the width direction. It is composed of both ends and the inner surface of the flutes formed in the shape of a concave curved surface located between them, so that stress concentration points occur on the top surface of the column when the pressure inside the bottle is reduced. It can be suppressed.

According to the present invention, the reduced pressure absorption capacity can be improved.

It is a side view of the bottle shown as one Embodiment which concerns on this invention. It is a cross-sectional view taken along the line AA shown in FIG. FIG. 1 is a cross-sectional view taken along the line BB shown in FIG. FIG. 1 is a cross-sectional view taken along the line CC shown in FIG. FIG. 1 is a cross-sectional view taken along the line DD shown in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The bottle 1 according to the present embodiment is formed by, for example, blow molding, and as shown in FIG. 1, the mouth portion 11, the shoulder portion 12, the body portion 13 and the bottom portion 14 are formed from above along the bottle axis O direction. It is connected in this order toward the bottom and is integrally formed of a synthetic resin material. The mouth portion 11, the shoulder portion 12, the body portion 13, and the bottom portion 14 are each formed in a cylindrical shape and are arranged coaxially with the bottle shaft O.
Hereinafter, in a plan view seen from the bottle axis O direction, the direction orthogonal to the bottle axis O is referred to as a radial direction, and the direction orbiting around the bottle axis O is referred to as a circumferential direction.
The content of the bottle 1 is, for example, 200 ml or more and 1500 ml or less. In the illustrated example, the content of the bottle 1 is about 530 ml, the size of the bottle 1 in the bottle axis O direction is about 207 mm, and the outer diameter of the body 13 is about 68.5 mm.

On the outer peripheral surface of the mouth portion 11, a male screw portion to which a cap (not shown) is detachably screwed is formed. The diameter of the shoulder portion 12 gradually increases from the upper side to the lower side, and the lower end portion of the shoulder portion 12 is connected to the upper end portion of the body portion 13. In the plan view, a plurality of first concave grooves 12a radially arranged around the mouth portion 11 are formed on the shoulder portion 12 at intervals in the circumferential direction.
A neck ring 15 extending over the entire circumference is projected outward in the radial direction at the connecting portion between the mouth portion 11 and the shoulder portion 12.

At the upper end of the body portion 13, a first peripheral groove 13a extending continuously over the entire circumference is formed. At the lower end of the body portion 13, two second peripheral grooves 13b extending continuously over the entire circumference are formed at intervals in the bottle axis O direction. An upper third peripheral groove 13c and a lower third peripheral groove 13d extending continuously over the entire circumference are formed in the middle portion of the body portion 13 in the bottle shaft O direction at intervals in the bottle shaft O direction. It is not necessary to form the upper third peripheral groove 13c in the body portion 13.
The body portion 13 is located above the upper third peripheral groove 13c and extends downward from the shoulder portion 12, and is located below the lower third peripheral groove 13d and faces upward from the bottom portion 14. A lower body portion 17 extending from the upper body portion 17 and a middle body portion located between the upper third peripheral groove 13c and the lower third peripheral groove 13d are provided. The length of the lower body portion 17 in the bottle shaft O direction is longer than the length of the upper body portion 16 in the bottle shaft O direction.

In the upper body portion 16, a second concave groove 16a extending from one side in the circumferential direction to the other side is gradually spaced in the circumferential direction from the lower side to the upper side in the portion located below the first peripheral groove 13a. Multiple pieces are formed with a gap. The groove width of the second concave groove 16a is equal to the distance between the second concave grooves 16a adjacent to each other in the circumferential direction. By forming a plurality of second concave grooves 16a protruding inward in the radial direction from the inner peripheral surface of the body portion 13, the liquid in the bottle 1 is discharged from the mouth portion 11 with a small remaining amount. Can be done.

Further, in the present embodiment, the body portion 13 includes a decompression absorption portion 22 in which the decompression absorption panel 18 and the pillar portion 19 are alternately connected in the circumferential direction. The cross-sectional view of the decompression absorption unit 22 is a polygonal shape. For example, 4 or more and 12 or less of the decompression absorption panels 18 and the pillars 19 are arranged, and 6 in the illustrated example. The decompression absorbing portion 22 is formed in a portion of the lower body portion 17 located above the second peripheral groove 13b. The decompression absorption panel 18 and the pillar portion 19 are inclined with respect to the bottle axis O direction so as to gradually extend from one side in the circumferential direction to the other side from the lower side to the upper side. When viewed from the outside in the radial direction, the inclination angle of the decompression absorption panel 18 and the pillar portion 19 with respect to the bottle shaft O is, for example, about 10 ° or more and 30 ° or less. When viewed from the outside in the radial direction, the direction in which the decompression absorption panel 18 and the pillar portion 19 are inclined with respect to the bottle shaft O is the same as the direction in which the second concave groove 16a is inclined with respect to the bottle shaft O. In addition, these tilting directions may be different from each other.

The decompression absorption panel 18 has a rectangular shape that is long in the direction of inclination with respect to the bottle axis O direction as described above when viewed from the outside in the radial direction. The width of the decompression absorption panel 18 gradually increases from the bottom to the top. The width of the decompression absorption panel 18 may be the same over the entire length, or may be gradually narrowed from the bottom to the top.
As shown in FIGS. 2 to 5, the decompression absorption panel 18 exhibits a linear or curved shape without corners over the entire area in a cross-sectional view orthogonal to the bottle axis O, and is the top surface of the pillar portion 19. It is smoothly connected to both ends 20a and 20b in the width direction of 20 without any step. For example, the upper end portion of the decompression absorption panel 18 shown in FIG. 2 is formed by smoothly connecting a plurality of curved portions without steps in a cross-sectional view orthogonal to the bottle axis O, and these curved portions are column portions. A pair of outer curved portions connected to both end portions 20a and 20b in the width direction on the top surface 20 of 19 and recessed inward in the radial direction, and an inner curved portion located between them and protruding outward in the radial direction. It has a curved part.

An overhanging portion 18a is formed at the upper end portion of the decompression absorption panel 18 so as to gradually extend outward in the radial direction from the lower side to the upper side. The overhanging portion 18a exhibits a semicircular shape that protrudes downward when viewed from the outside in the radial direction. The upper end edge of the upper overhanging portion 18a is connected to the lower opening peripheral edge portion 13e located on the lower side of the pair of upper and lower opening peripheral edges of the lower third peripheral groove 13d in the body portion 13.
A lower overhanging portion 18b is formed at the lower end portion of the decompression absorption panel 18 so as to gradually extend outward in the radial direction from the upper side to the lower side. The lower overhanging portion 18b exhibits a semicircular shape that protrudes upward when viewed from the outside in the radial direction.
The size of the upper overhanging portion 18a in the bottle shaft O direction is larger than the size of the lower overhanging portion 18b in the bottle shaft O direction.

The pillar portion 19 has a long triangular shape in a direction inclined with respect to the bottle axis O direction as described above when viewed from the outside in the radial direction, and gradually widens as the width increases from the upper side to the lower side. .. The width of the pillar portion 19 may be the same over the entire length, or may be gradually narrowed from the upper side to the lower side. The upper end portion of the pillar portion 19 is connected to the lower opening peripheral edge portion 13e of the body portion 13. A narrow groove 19a extending in the circumferential direction is formed at the lower end of the pillar portion 19. Both ends of the narrow groove 19a in the circumferential direction are open in the circumferential direction. It is not necessary to form the narrow groove 19a in the pillar portion 19.

On the top surface 20 of the surface of the pillar portion 19 facing outward in the radial direction, a vertical groove portion 21 extending in the longitudinal direction thereof is formed. The inner surface of the vertical groove portion 21 is formed in a curved surface shape that is recessed inward in the radial direction. Both end portions 20a and 20b in the width direction of the top surface 20 of the pillar portion 19 are formed in a curved surface shape with protrusions toward the outside in the radial direction. Of the opening peripheral edges of the flutes 21 on the top surface 20 of the pillar portion 19, each portion located at both ends in the width direction and extending in the longitudinal direction is separately divided into both ends 20a and 20b in the width direction on the top surface 20. positioned.
Here, both ends in the width direction of the decompression absorption panel 18 are directly connected to the ends 20a and 20b in the width direction on the top surface 20 of the pillar portion 19. As a result, the decompression absorption panel 18 and the pillar portion 19 are connected to each other via the end portions 20a and 20b of the top surface 20 formed in a convex curved surface shape without interposing a corner portion in the circumferential direction.

As shown in FIGS. 2 to 5, in the cross-sectional view orthogonal to the bottle axis O, the radius of curvature of the inner surface of the vertical groove portion 21 is larger than the radius of curvature of both end portions 20a and 20b in the width direction on the top surface 20. , The radius of curvature of both ends 20a and 20b in the width direction on the top surface 20 are equal to each other. The radius of curvature of the inner surface of these flutes 21 and the radius of curvature of both end portions 20a and 20b in the width direction on the top surface 20 are smaller in the portion of the column portion 19 located at a narrow portion. , It is larger in the part located in the wide part.

The vertical groove portion 21 is formed over the entire area of the intermediate portion of the top surface 20 of the pillar portion 19 located between the upper end portion and the lower end portion. The upper end portion and the lower end portion on the inner surface of the vertical groove portion 21 gradually extend outward in the radial direction toward the outside in the longitudinal direction, and are smoothly connected to the top surface 20 of the column portion 19 without a step.

As described above, according to the bottle 1 according to the present embodiment, since the body portion 13 includes the decompression absorption portion 22, the decompression absorption panel 18 is deformed inward in the radial direction at the time of decompression in the bottle 1. In addition to making it possible to deform the entire decompression absorption unit 22 so as to be twisted in the circumferential direction, the decompression absorption capacity can be improved.
Since the vertical groove portion 21 is formed in the pillar portion 19, it is possible to improve the rigidity of the pillar portion 19 with respect to a load in the radial direction, for example, and the decompression absorbing portion 22 is greatly twisted and deformed as the pressure inside the bottle 1 is reduced. However, it is possible to suppress the column portion 19 from bending and deforming, for example, and the decompression absorption capacity can be reliably improved.
The inner surface of the vertical groove portion 21 is formed in a curved surface shape that is recessed inward in the radial direction, and both end portions 20a and 20b in the width direction of the top surface 20 of the pillar portion 19 project outward in the radial direction. The decompression absorption panel 18 and the pillar portion 19 are connected in the circumferential direction via the end portions 20a and 20b of the top surface 20 formed in a convex curved surface shape, so that the decompression absorption panel 18 and the pillar portion 19 are connected in the circumferential direction. It is possible to eliminate the corner portion where stress is likely to be concentrated from the portion 22, and it is possible to reduce the stress generated in the reduced pressure absorbing portion 22 when the pressure is reduced in the bottle 1. Therefore, at the time of decompression in the bottle 1, the entire decompression absorption unit 22 can be flexibly deformed, and the decompression absorption capacity can be further and surely improved.

Further, since the opening peripheral edge portion of the vertical groove portion 21 on the top surface 20 of the pillar portion 19 is located at both end portions 20a and 20b in the width direction on the top surface 20, the top surface 20 of the pillar portion 19 is a convex curved surface. It is composed of both end portions 20a and 20b in the width direction formed in a shape and an inner surface of a vertical groove portion 21 formed in a concave curved surface shape located between them, and when the pressure in the bottle 1 is reduced, It is possible to suppress the occurrence of stress concentration points on the top surface 20 of the column portion 19.

Further, since the decompression absorbing portion 22 is formed not in the entire area of the body portion 13 in the bottle axis O direction but in the lower body portion 17, the length of the pillar portion 19 is suppressed to be short, and the length of the pillar portion 19 is suppressed in the radial direction. The rigidity against the load can be surely improved.

Next, the verification test for the action and effect described above will be described.
As an example, the bottles 1 shown in FIGS. 1 to 5 were adopted, and as a comparative example, the bottles 1 shown in FIGS. 1 to 5 which did not have the vertical groove portion 21 were adopted.
Then, the inside of each bottle was gradually depressurized, and the amount of decrease in the internal volume (decompression absorption capacity) until the pillar portion 19 was bent or otherwise deformed was measured.
As a result, it was confirmed that the volume was 26 ml in the bottle of Comparative Example and 31 ml in Bottle 1 of Example, and the decompression absorption capacity could be improved by 19% as compared with the bottle of Comparative Example.

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.

For example, in the above embodiment, the decompression absorbing portion 22 is formed on the lower body portion 17, but the decompression absorbing portion 22 may be formed on the upper body portion 16 or may be formed over the entire body portion 13. ..
Further, in the above-described embodiment, the pillar portion 19 has no side surface extending inward in the radial direction from both end portions 20a and 20b in the width direction on the top surface 20, but a configuration having side surfaces is adopted. You may. In this configuration, the radial inner end portion on the side surface and the both end portions in the width direction of the decompression absorption panel 18 may be connected via a curved surface portion recessed inward in the radial direction.

Further, the synthetic resin material forming the bottle 1 may be appropriately changed, for example, polyethylene terephthalate, polyethylene naphthalate, amorphous polyester, or a blend material thereof.
Further, the bottle 1 is not limited to the single-layer structure, and may be a laminated structure having an intermediate layer. Examples of the intermediate layer include a layer made of a resin material having a gas barrier property, a layer made of a recycled material, a layer made of a resin material having an oxygen absorption property, a combination of these layers, a vapor deposition layer and the like.

In addition, it is possible to replace the components in the above-described embodiment with well-known components as appropriate without departing from the spirit of the present invention, and the above-mentioned modifications may be appropriately combined.

1 Bottle 11 Mouth 12 Shoulder 13 Body 14 Bottom 16 Upper body 17 Lower body 18 Decompression absorption panel 19 Pillar 20 Top surface 20a, 20b End 21 Vertical groove 21a Inner surface 22 Decompression absorption O Bottle shaft

Claims (2)

The mouth, shoulders, torso, and bottom are connected in this order from top to bottom along the bottle axis direction, and are integrally formed of a synthetic resin material.
The body portion includes a decompression absorption panel and a decompression absorption portion formed by alternately connecting pillar portions in the circumferential direction.
The decompression absorption panel and the pillar portion gradually extend from one side to the other in the circumferential direction from the bottom to the top, respectively.
A vertical groove extending in the longitudinal direction is formed on the top surface of the pillar portion facing outward in the radial direction.
The inner surface of the vertical groove portion is formed in a curved surface shape that is recessed inward in the radial direction.
Both ends in the width direction on the top surface of the pillar are formed in a curved surface shape with protrusions toward the outside in the radial direction.
The decompression and the absorption panel and the pillar portion Ri Tsurana the circumferential direction via a curved surface portion,
The torso includes an upper torso extending downward from the shoulder and a lower torso extending upward from the bottom.
The length of the lower body portion in the bottle axial direction is longer than the length of the upper body portion in the bottle axial direction.
The decompression absorption portion is formed on the lower body portion and is formed on the lower body portion.
A bottle characterized in that a plurality of second concave grooves extending from one side in the circumferential direction to the other side are gradually formed in the upper body portion from the lower side to the upper side at intervals in the circumferential direction. .. Of the opening peripheral edges of the vertical groove portion on the top surface of the pillar portion, each portion located at both ends in the width direction and extending in the longitudinal direction shall be separately located at both ends in the width direction on the top surface. The bottle according to claim 1.

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