JP2019055788A - Squeeze bottle - Google Patents

Abstract

To provide a squeeze bottle which enables the squeeze with a lighter pressure.SOLUTION: The planar view from the axis O of the squeeze bottle 1 is a flat shape with a pair of short sides 15 and another pair of long sides 16, and the bottle has an elastically deformable body 13. On the long sides of the bottle body, a pair of vertical division grooves 17 extending in the bottle axis direction are formed in circumferential direction along the axis of the bottle with keeping a distance with each other. In the bottle body, at the portions of a pressed part 18 that are adjacent to each other in circumferential direction, the pressed part located between the pair of vertical division grooves, horizontal grooves 19 are formed; and the horizontal grooves are in the same location in the bottle axis direction.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a squeeze bottle.

  Conventionally, for example, as shown in Patent Document 1 below, a plan view shape viewed from the bottle axial direction is a flat shape having a pair of short side portions and a pair of long side portions, and is formed to be elastically deformable. A squeeze bottle having a torso is known. In this squeeze bottle, the contents in the trunk are discharged through the mouth by pushing the pair of long side portions in the trunk in the direction of the short axis facing each other.

Japanese Patent No. 5407830

  However, the conventional squeeze bottle has room for improvement with respect to reducing the pushing force applied to the body part required for discharging the contents.

  This invention is made | formed in view of the situation mentioned above, Comprising: It aims at providing the squeeze bottle which can reduce the pushing force added to the trunk | drum required to discharge the contents.

  The present invention employs the following means in order to solve the above problems. That is, the squeeze bottle of the present invention has a body portion that is flat when viewed from the bottle axial direction and has a pair of short side portions and a pair of long side portions and is elastically deformable. In the squeeze bottle, a pair of vertical partition grooves extending in the bottle axis direction are disposed in the long side portion at intervals in a circumferential direction around the bottle axis. The lateral grooves extending in the circumferential direction are separately formed in each portion adjacent to the pressed portion located between the circumferential directions, and the positions of the lateral grooves in the bottle axial direction are equal to each other. Features.

According to the present invention, in the body portion, lateral grooves extending in the circumferential direction are separately formed in each portion adjacent to the pressed portion located in the long side portion in the circumferential direction, and the bottle axial direction of each of these lateral grooves Since the positions of the pressed parts are pushed toward the inner side in the short axis direction where the pair of long side parts oppose each other, the part adjacent to the lateral groove in the pressed part is the starting point. Thus, the pressed part can be easily deformed toward the inner side in the minor axis direction over a wide range.
In addition, since the pressed portion is partitioned in the trunk portion by the pair of vertical partition grooves, even if the pushing force toward the inner side in the short axis direction applied to the pressed portion attempts to propagate to other portions in the trunk portion. It becomes possible to dam by the vertical partition grooves, and it is possible to suppress the pushing force from being dispersed.
From the above, it is possible to reduce the pushing force applied to the body part required for discharging the contents.

  Here, the long side portion is disposed with a pair in the bottle axis direction with a gap therebetween, and a pair of the vertical partition grooves are formed to connect each of the vertical partition grooves in the circumferential direction. A closed region may be defined by the pair of vertical partition grooves and the pair of horizontal partition grooves.

  In this case, since the pressed portion is partitioned into the closed region by the pair of vertical partition grooves and the pair of horizontal partition grooves, the pressing force toward the inner side in the minor axis direction applied to the pressed portion is It is possible to reliably suppress the dispersion to other parts. In addition, it is possible to specify a portion to be pushed into the body portion when the user discharges the contents.

Moreover, the said horizontal groove may be connected to the said vertical division groove.
In this case, since the horizontal groove is connected to the vertical partition groove, when the pressed portion is pushed inward in the minor axis direction, a large stress may be generated at the connection portion between the horizontal groove and the vertical partition groove. This makes it possible to easily deform the pressed portion over a wide range from the connecting portion to the inside in the minor axis direction.

Moreover, the said horizontal groove may be arrange | positioned over the whole region of the circumferential direction in the said short side part.
In this case, since the lateral groove is disposed over the entire region in the circumferential direction of the short side portion, when the pressed portion is pushed inward in the short axis direction, the portion adjacent to the lateral groove in the pressed portion is surely provided. A large stress can be generated.

  According to the present invention, it is possible to reduce the pushing force applied to the body part required for discharging the contents.

It is the side view which looked at the squeeze bottle shown as 1st Embodiment which concerns on this invention from the short axis direction. It is a top view of the squeeze bottle shown in FIG. It is the side view which looked at the squeeze bottle shown as 2nd Embodiment which concerns on this invention from the short axis direction. It is a top view of the squeeze bottle shown as 3rd Embodiment concerning this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the squeeze bottle 1 according to the present embodiment has a mouth portion 11, a shoulder portion 12, a trunk portion 13, and a bottom portion 14 in this order from the top to the bottom along the bottle axis O direction. It is continuously formed and is integrally formed of a synthetic resin material. The squeeze bottle 1 is formed, for example, by extrusion blow molding or biaxial stretch blow molding of a test tube-shaped preform.

The mouth portion 11 is formed in a cylindrical shape. Each of the shoulder portion 12, the body portion 13, and the bottom portion 14 has a flat shape having a pair of short side portions 15 and a pair of long side portions 16 as viewed from the bottle axis O direction. That is, the shoulder portion 12, the body portion 13, and the bottom portion 14 have a flat cross-sectional shape having a short axis O1 and a long axis O2 that intersect with each other on the bottle axis O. The mouth part 11, the shoulder part 12, the body part 13 and the bottom part 14 are arranged coaxially with the bottle axis O, respectively.
Hereinafter, the direction in which the pair of long side portions 16 face each other when viewed from the bottle axis O direction is referred to as the short axis O1 direction, and the direction in which the pair of short side portions 15 face each other is referred to as the long axis O2 direction. The direction that goes around O is called the circumferential direction.

A male screw part to which a cap (not shown) is detachably screwed is formed on the outer peripheral surface of the mouth part 11. The shoulder 12 gradually increases in diameter from the upper side toward the lower side. The trunk | drum 13 is formed so that elastic deformation is possible. The body part 13 extends straight in the bottle axis O direction. The bottom part 14 is formed in a bottomed cylindrical shape and gradually decreases in diameter from the upper side toward the lower side. The trunk | drum 13, the shoulder part 12, and the bottom part 14 are continued without the level | step difference in the bottle axis | shaft O direction.
The body portion 13 is a protrusion that connects the long side portion 16 and the short side portion 15 as viewed from the bottle axis O direction, and has a radius of curvature smaller than the curvature radii R1 and R2 of the long side portion 16 and the short side portion 15, respectively. A corner portion 13a having a curved shape is provided.

  In the present embodiment, a pair of vertical partition grooves 17 extending in the bottle axis O direction are disposed in the long side portion 16 of the body portion 13 with an interval in the circumferential direction. In the body portion 13, a lateral groove 19 extending in the circumferential direction is formed in each portion adjacent to the pressed portion 18 positioned between the pair of vertical partition grooves 17 in the circumferential direction, and each of these lateral grooves 19. The positions in the bottle axis O direction are equal to each other.

In the illustrated example, the vertical partition groove 17 extends straight in the bottle axis O direction. The vertical partition groove 17 is arranged over the entire region of the body portion 13 in the bottle axis O direction. The vertical partition grooves 17 are disposed at both ends in the circumferential direction of the long side portion 16 of the body portion 13. The groove width of the vertical partition groove 17 is narrower than the groove width of the horizontal groove 19. The depth of the vertical partition groove 17 is equal to the depth of the horizontal groove 19.
In addition, you may change the vertical division groove | channel 17 suitably, for example making it extend in the bottle axis | shaft O direction, for example, making it bend in the circumferential direction. The groove width of the vertical partition groove 17 may be equal to or greater than the groove width of the horizontal groove 19. The depths of the vertical partition grooves 17 and the horizontal grooves 19 may be different from each other.

In the long side portion 16 of the body portion 13, a pair of horizontal partition grooves 21 are formed that are spaced apart in the bottle axis O direction and connect the pair of vertical partition grooves 17 to each other in the circumferential direction. Thus, the pressed portion 18 is partitioned into a closed region by the pair of vertical partition grooves 17 and the pair of horizontal partition grooves 21. At least a part of the pressed portion 18 is located at the center of the long side portion 16 in the trunk portion 13. In the illustrated example, the central portion of the pressed portion 18 is located at the central portion of the long side portion 16 in the trunk portion 13.
The horizontal partition groove 21 connects ends of the pair of vertical partition grooves 17 in the bottle axis O direction in the circumferential direction. The groove width of the horizontal partition groove 21 is equal to the groove width of the vertical partition groove 17. The depth of the horizontal partition groove 21 is equal to the depth of the vertical partition groove 17.

  Note that the pressed portion 18 may be positioned at a position away from the central portion in the long side portion 16 of the body portion 13. For example, the horizontal partition grooves 21 may connect the intermediate portions of the pair of vertical partition grooves 17 in the bottle axis O direction in the circumferential direction. The widths of the horizontal partition grooves 21 and the vertical partition grooves 17 may be different from each other. The horizontal partition grooves 21 and the vertical partition grooves 17 may have different depths.

The horizontal partition groove 21 has a curved shape that protrudes outward in the bottle axis O direction when viewed from the short axis O1 direction. The pressed part 18 has a long rectangular shape or an elliptical shape in the bottle axis O direction when viewed from the short axis O1 direction. In the illustrated example, the pressed part 18 is a rectangle that has a long side that extends straight in the bottle axis O direction and a short side that protrudes outward in the bottle axis O direction when viewed from the short axis O1 direction. Present. Of the pair of lateral partition grooves 21, the upper end portion of the lateral partition groove 21 positioned on the upper side is positioned on the shoulder portion 12, and the lower end portion of the lateral partition groove 21 positioned on the lower side is positioned on the peripheral wall of the bottom portion 14. .
Note that the entire lateral partition groove 21 may be positioned in the body portion 13. The transverse partition groove 21 may be appropriately changed as seen from the direction of the minor axis O1, for example, extending straight in the circumferential direction. The lateral partition groove 21 is not formed in the body portion 13 and the pressed portion 18 does not have to be a closed region. In this case, you may provide the display part which can pinpoint the location pushed in when the user discharges the content in the long side part 16 of the trunk | drum 13. FIG.

The lateral groove 19 is disposed in a portion of the body portion 13 adjacent to a location where the user pushes the contents when discharging them. In the example shown in the drawing, the lateral grooves 19 are arranged one by one at a central portion in the bottle axis O direction of the body portion 13 with a circumferential interval. The positions in the bottle axis O direction of the central part of the horizontal groove 19 and the pressed part 18 in the bottle axis O direction are equal to each other.
In addition, you may mutually vary the position of the center part of the horizontal groove | channel 19 and the to-be-pressed part 18 of the bottle axis | shaft O direction in the bottle axis | shaft O direction. Further, when the display portion is provided in the long side portion 16 of the trunk portion 13 without the pressed portion 18 being a closed region, the lateral groove 19 may be disposed in a portion adjacent to the display portion in the trunk portion 13. Good.
The lateral groove 19 is connected to the vertical partition groove 17. The lateral groove 19 is disposed in a portion of the body portion 13 located outside the pressed portion 18. The lateral groove 19 is arranged over the entire region in the circumferential direction of the short side portion 15 of the body portion 13.

Here, the pressed portions 18 are formed separately on the pair of long side portions 16 in the body portion 13. These pressed parts 18 have the same shape and the same size. The lateral groove 19 connects adjacent vertical partition grooves 17 with the short side portion 15 of the body portion 13 sandwiched in the circumferential direction. The lateral groove 19 extends continuously between the vertical partition grooves 17 in the circumferential direction. The lateral groove 19 extends straight in the circumferential direction.
The lateral groove 19 may be appropriately changed, for example, bent in the bottle axis O direction and extended in the circumferential direction. The lateral groove 19 may extend intermittently in the circumferential direction between adjacent vertical partition grooves 17 with the short side portion 15 of the body portion 13 sandwiched in the circumferential direction.

  In the illustrated example, the radius of curvature R1 of the long side portion 16 on the outer peripheral surface of the barrel portion 13 is about 161 mm when viewed from the bottle axis O direction, and the radius of curvature R2 of the short side portion 15 on the outer peripheral surface of the barrel portion 13 is illustrated. Is about 39.5 mm. The size L2 in the major axis O2 direction on the outer peripheral surface of the trunk portion 13 is about 75.1 mm, and the size L1 in the minor axis O1 direction on the outer circumferential surface of the barrel portion 13 is about 49.3 mm. The size of the body portion 13 in the bottle axis O direction is about 160 mm. The squeeze bottle 1 has a capacity of 400 ml.

As described above, according to the squeeze bottle 1 according to the present embodiment, in the body portion 13, the lateral groove extending in the circumferential direction in each portion adjacent to the pressed portion 18 located in the long side portion 16 in the circumferential direction. 19 are formed separately, and the positions of the lateral grooves 19 in the bottle axis O direction are equal to each other. Therefore, when the pressed portion 18 is pushed inward in the short axis O1 direction, It is possible to easily deform the pressed portion 18 toward the inner side in the minor axis O1 direction over a wide range, starting from a portion adjacent to the lateral groove 19 in the pressing portion 18.
In addition, since the pressed portion 18 is partitioned in the body portion 13 by the pair of vertical partition grooves 17, the pressing force applied to the inside of the short axis O <b> 1 direction applied to the pressed portion 18 is different from that in the body portion 13. Even if it is going to propagate to a part, it becomes possible to stop by the vertical division groove 17, and it can suppress that pushing force disperses.
From the above, it is possible to reduce the pushing force applied to the body portion 13 required for discharging the contents.

In addition, since the pressed portion 18 is partitioned into a closed region by the pair of vertical partition grooves 17 and the pair of horizontal partition grooves 21, the pressing force applied to the pressed portion 18 toward the inner side in the minor axis O1 direction is increased. Further, it is possible to reliably suppress the dispersion to other portions in the body portion 13. In addition, it is possible to specify a place to be pushed into the body portion 13 when the user discharges the contents.
Further, since the horizontal groove 19 is connected to the vertical partition groove 17, a large stress is applied to the connection portion between the horizontal groove 19 and the vertical partition groove 17 when the pressed portion 18 is pushed inward in the direction of the minor axis O <b> 1. This makes it possible to easily deform the pressed portion 18 toward the inner side in the direction of the minor axis O1 over a wide range from the connecting portion as a starting point.
Further, since the lateral groove 19 is arranged over the entire area in the circumferential direction of the short side portion 15, when the pressed part 18 is pushed inward in the direction of the short axis O <b> 1, the lateral groove 19 is pressed in the pressed part 18. A large stress can be reliably generated in the adjacent portion.

  Next, a verification test for the above-described effects will be described.

Five types of squeeze bottles were created as analysis models.
As a model of Example 1, the squeeze bottle 1 shown in FIGS. 1 and 2 was adopted.
As a model of Example 2, as shown in FIG. 3, a squeeze bottle 2 in which a lateral groove 19 is added to the squeeze bottle 1 shown in FIGS. 1 and 2 was adopted. In this model, three horizontal grooves 19 are arranged at equal intervals in the bottle axis O direction, and at the center of the vertical partition groove 17 in the bottle axis O direction and at both ends in the bottle axis O direction. Connected separately.
As a model of the third embodiment, as shown in FIG. 4, the curvature radius R2 of the short side portion 15 on the outer peripheral surface of the body portion 13 as viewed from the bottle axis O direction is set to about 22.2 mm. The squeeze bottle 3 which is smaller than the squeeze bottle 1 shown in FIG. 5 and has an oval shape in which the body portion 13 does not have the corner portion 13a when viewed from the bottle axis O direction is employed.
As a model of Comparative Example 1, a squeeze bottle that does not have the vertical partition grooves 17, the horizontal partition grooves 21, and the horizontal grooves 19 was adopted with respect to the squeeze bottle 1 shown in FIGS. 1 and 2.
As a model of Comparative Example 2, a squeeze bottle having no lateral groove 19 was adopted for the squeeze bottle 1 shown in FIGS. 1 and 2.

Then, each model is pressed with two types of pressing bodies to be described later, the long side portion of the body portion is pushed inward in the direction of the short axis O1, and the load when the contents are discharged by about 40 ml is deformed by 10 mm in this direction. Calculated by numerical analysis.
One of the two types of pressing bodies employs a rigid sphere with a radius of 10 mm, and pushes the central part of the long side of the body part toward the inside in the short axis O1 direction, and the remaining one has a diameter. A 20 mm rigid round bar is used, and the central part in the bottle axis O direction in the long side portion of the body part is set in the short axis O1 direction by the outer peripheral surface of the round bar in a lateral posture so as to extend in the circumferential direction. I pushed it towards.

As a result, regardless of the type of the pressing body, the load is reduced by about 10% in the model of Comparative Example 2 and about 30% in the model of Example 1, compared to the model of Comparative Example 1. It was confirmed that the model of 2 was reduced by about 25% and the model of Example 3 was reduced by about 40%.
Among these, compared with the model of Example 1, since the load is higher in the model of Example 2, it is possible to adjust the discharge amount and the pushing force by adjusting the number of the lateral grooves 19. confirmed.

Next, after the long side portion of the body portion was deformed as described above, the time until the restoration deformation was completed when the pressing by the pressing body was released was calculated by numerical analysis.
As a result, the time may be about 55% longer in the model of Example 3 while the time is almost the same in the model of Example 1 compared to the model of Comparative Example 1 regardless of the type of the pressing body. confirmed.
Thereby, it was confirmed that the model of Example 1 in which the trunk | drum 13 has the corner | angular part 13a is more preferable at the point of operativity.

  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.

For example, in the above-described embodiment, the pressed portion 18 in the closed region is configured to have a long rectangular shape or an elliptical shape in the bottle axis O direction as viewed from the short axis O1 direction. Alternatively, the shape may be changed as appropriate, such as a regular shape. You may change suitably the magnitude | size of the to-be-pressed part 18 according to discharge amount, pushing force, etc. FIG.
In the above embodiment, the horizontal grooves 19 are connected to the vertical partition grooves 17, but they may be separated from the vertical partition grooves 17 in the circumferential direction.
In the above-described embodiment, the lateral groove 19 is disposed on the short side portion 15 of the body portion 13, but may be disposed only on the long side portion 16 of the body portion 13.

The synthetic resin material forming the squeeze bottles 1, 2, and 3 may be appropriately changed, for example, polyethylene terephthalate, polyethylene naphthalate, amorphous polyester, or a blend material thereof.
The squeeze bottles 1, 2, and 3 are not limited to a 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, or a vapor deposition layer.

  In addition, it is possible to appropriately replace the constituent elements in the embodiment with known constituent elements without departing from the spirit of the present invention, and the modification examples may be combined as appropriate.

1, 2, 3 Squeeze bottle 13 Body 15 Short side portion 16 Long side portion 17 Vertical partition groove 18 Pressed portion 19 Horizontal groove 21 Horizontal partition groove O Bottle shaft

Claims (4)

The squeeze bottle having a body shape that is a flat shape having a pair of short side portions and a pair of long side portions and is formed to be elastically deformable, as seen from the bottle axial direction.
A pair of longitudinal grooves extending in the bottle axial direction are disposed in the long side portion with a gap in the circumferential direction around the bottle axis,
In the trunk portion, lateral grooves extending in the circumferential direction are separately formed in each portion adjacent in the circumferential direction with respect to the pressed portion located between the pair of vertical partition grooves,
A squeeze bottle characterized in that the positions of these transverse grooves in the bottle axial direction are equal to each other. In the long side portion, a pair of arranged at intervals in the bottle axial direction, and a horizontal partition groove that connects the pair of vertical partition grooves to each other in the circumferential direction is formed,
The squeeze bottle according to claim 1, wherein the pressed portion is partitioned into a closed region by a pair of the vertical partition grooves and a pair of the lateral partition grooves.   The squeeze bottle according to claim 1, wherein the horizontal groove is connected to the vertical partition groove.   The squeeze bottle according to any one of claims 1 to 3, wherein the lateral groove is arranged over the entire circumferential direction of the short side portion.

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