JP7109312B2 - squeeze bottle - Google Patents

Description

The present invention relates to squeeze bottles.

Conventionally, as shown in Patent Document 1 below, for example, an inner container that is deformed to reduce the volume with a decrease in the content to be accommodated, and an inner container that is installed inside and has a body that is formed to be elastically deformable. A squeeze bottle is known that includes an outer container and pushes the body of the outer container to discharge the contents in the inner container through the mouth.

JP 2018-87036 A

However, the conventional squeeze bottle has room for improvement in terms of easily discharging the contents in the inner container.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a squeeze bottle that can easily discharge the contents in the inner container.

The present invention employs the following means to solve the above problems. That is, the squeeze bottle of the present invention includes an inner container that is deformed and reduced in volume as the content contained therein decreases, and an outer container in which the inner container is accommodated. A squeeze bottle that is continuously arranged in this order from top to bottom along an axial direction, and at least the body portion of the outer container is formed to be elastically deformable, wherein at least the body portion is a bottle shaft. It has a long axis and a short axis that intersect each other at the top, and the plan view shape when viewed from the axial direction of the bottle is a flat shape having a pair of short side portions and a pair of long side portions. At least a part of each of the short side portions has a corner portion sharpened outward in the long axis direction in which the long axis extends, and is provided at the mouth portion of the outer container between the outer container and the inner container. An air intake hole for introducing outside air is formed, and the air intake holes are formed at both ends of the opening of the outer container in the short axis direction in which the short axis extends .

According to the present invention, the plane view shape of the body when viewed from the axial direction of the bottle is a flat shape having a pair of short side portions and a pair of long side portions. , when pushed in the direction of the short axis facing each other, the pair of long side portions can be easily deformed over a wide range, and the pushing force at this time can be effectively transmitted into the inner container.
In addition, since at least a part of each of the pair of short side portions is provided with corners that are pointed outward in the longitudinal direction, when the pair of long side portions of the trunk are pushed in as described above, the corners By bending, it becomes easy to deform the body so that the pair of long side portions approach each other. Therefore, it is possible to easily discharge the contents in the inner container, and for example, when the remaining amount of the contents in the inner container is low, or when high-viscosity contents are accommodated in the inner container. , etc., the contents in the inner container can be discharged with a small pressing force.

Here, when viewed in the axial direction of the bottle, the short side portion may be formed by connecting at least one of circular arcs and straight lines.

In this case, when viewed from the bottle axial direction, the short side portion is formed by connecting at least one of circular arcs and straight lines, so the short side portion having corners can be easily designed.

Further, the short side portion includes the corner portion and a pair of connecting portions extending separately from both ends of the corner portion in the short axis direction toward the long side portion, and is viewed from the bottle axial direction. In a plan view, an angle formed by tangent lines at each connection portion between the corner portion and the pair of connection portions may be 90° or more and 140° or less.

In this case, in plan view from the axial direction of the bottle, the angle formed by the tangent lines at each connection portion between the corner and the pair of connection portions is 90° or more and 140° or less. The corners can be easily bent when the pair of long side portions of the barrel are pushed in as described above, while ensuring the resilience of the outer container when the side portions are released from being pushed in as described above. .
That is, if the angle is less than 90°, it becomes difficult to ensure the above-mentioned restoring property of the outer container. The corners are less likely to bend when pushed in like this.

Further, the short side portion may have a symmetrical shape with respect to the long axis in a plan view seen from the axial direction of the bottle.

In this case, since the short side portions have a symmetrical shape with respect to the long axis in a plan view seen from the axial direction of the bottle, when the pair of long side portions of the barrel are pushed in as described above, the corner portions can be bent more reliably.

Also, in the mouth portion of the outer container, the air intake hole, and a sealed protrusion that bulges outward in a radial direction and extends continuously over the entire circumference and onto which a peripheral wall portion of the cap is fitted; A recess extending radially inward and an annular groove extending continuously over the entire circumference may be formed in this order from top to bottom.

In this case, since the intake hole, the sealed projection, and the annular groove are formed in this order from the top to the bottom in the opening, the deformation when the body of the outer container is pushed in is blocked by the annular groove. and can be restricted from propagating to the sealed protrusion. As a result, for example, when the amount of content remaining in the inner container is low, even if the upper part of the body is pushed in strongly, the seal between the sealed protrusion and the peripheral wall of the cap is maintained. be able to.

According to this invention, the contents in the inner container can be easily discharged.

FIG. 2 is a side view including a partial cross section, viewed from the longitudinal direction, of a squeeze bottle shown as an embodiment of the present invention with a discharge cap attached. FIG. 2 is a side view including a partial cross-section of the squeeze bottle shown as one embodiment of the present invention with a discharge cap attached, viewed from the minor axis direction. Figure 3 is a top view of the squeeze bottle shown in Figures 1 and 2; Figure 3 is a bottom view of the squeeze bottle shown in Figures 1 and 2;

An embodiment of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 and 2, the squeeze bottle 1 is a delamination type container (delaminated bottle) in which an inner container 12 is detachably laminated on the inner surface of an outer container 11 . The squeeze bottle 1 is formed into a cylindrical shape with a bottom by, for example, forming a double (inside and outside) laminated parison by extrusion molding or the like, and blow molding the laminated parison (extrusion blow molding).

The material of the inner container 12 and the outer container 11 is a synthetic resin material. Examples of synthetic resin materials include PET (polyethylene terephthalate), PP (polypropylene), PE (polyethylene), nylon (polyamide), and EVOH (ethylene-vinyl alcohol copolymer). The inner container 12 and the outer container 11 are formed of materials selected from these synthetic resin materials so that they can be separated from each other.

The inner container 12 accommodates the content therein and deforms to reduce the volume as the content decreases. The inner container 12 is housed in the outer container 11 . Examples of the contents include mayonnaise, ketchup, medium thick sauce, miso, and dressings, and those having a relatively high viscosity of about 1000 mPa·s to 100000 mPa·s at 23°C. The viscosity can be determined by a method conforming to JIS K7117-1 using a Brookfield viscometer (rotational viscometer).
The content accommodated inside the inner container 12 may be of low viscosity.

The squeeze bottle 1 has a mouth portion 13 , a shoulder portion 15 , a body portion 16 and a bottom portion 14 . The mouth portion 13, shoulder portion 15, body portion 16 and bottom portion 14 are arranged coaxially with a common axis in this order.
Hereinafter, this common axis will be referred to as a bottle axis O, the mouth portion 13 side of the squeeze bottle 1 along the bottle axis O will be referred to as the upper side, and the bottom portion 14 side of the squeeze bottle 1 will be referred to as the lower side. Further, when viewed from the direction of the bottle axis O, the direction intersecting with the bottle axis O is called the radial direction, and the direction rotating around the bottle axis O is called the circumferential direction.

The mouth portion 13 of the squeeze bottle 1 is formed by stacking the mouth portion 12 a of the inner container 12 and the mouth portion 11 a of the outer container 11 , and the shoulder portion 15 of the squeeze bottle 1 is formed by stacking the shoulder portion 12 b of the inner container 12 . and the shoulder portion 11b of the outer container 11 are stacked, and the body portion 16 of the squeeze bottle 1 is configured by stacking the body portion 12c of the inner container 12 and the body portion 11c of the outer container 11. be done.
In the following description, it is assumed that both the inner container 12 and the outer container 11 have the same shape unless otherwise specified.

The mouth portion 13 of the squeeze bottle 1 is formed in a cylindrical shape extending upward from the upper end portion of the shoulder portion 15 .
The upper end portion of the mouth portion 12 a of the inner container 12 is folded radially outward over the entire circumference, and this folded portion is arranged at the upper end opening edge of the mouth portion 11 a of the outer container 11 .

The outer surface of the mouth portion 11a of the outer container 11 is formed with a male screw portion to which a cap 50 described later is screwed. In the mouth portion 11a of the outer container 11, an air intake hole 17 for introducing the outside air between the outer container 11 and the inner container 12, and a cap bulging outward in the radial direction and extending continuously over the entire circumference, which will be described later. A sealed protrusion 18 to which the peripheral wall portion 52c of the 50 is fitted, and an annular groove 19 recessed radially inward and extending continuously over the entire circumference are formed in this order from top to bottom. there is The lower end of annular groove 19 is connected to the upper end of shoulder 15 .
The formation position of the air intake hole 17 is not limited to the mouth portion 11a of the outer container 11. For example, the body portion 11c or the bottom portion 11d of the outer container 11 other than the mouth portion 11a may be formed.

The body portion 16 extends straight in the bottle axis O direction over the entire area except for the lower end portion. At least the body portion 11c of the outer container 11 is capable of squeeze deformation (elastic deformation), and the squeeze deformation of the outer container 11 causes the inner container 12 to shrink and deform. In the illustrated example, the shoulder portion 11b of the outer container 11 is also squeeze deformable.
In the bottom portion 14, an annular ground contact portion 31 positioned on the outer peripheral edge portion, a raised bottom portion 32 continuously provided to the inner peripheral edge portion of the ground contact portion 31 and recessed upward, and a raised bottom portion 32 formed on the inner surface of the raised bottom portion 32 and formed on the inner surface thereof. A portion of the container 11 is formed with holding ribs 33 that sandwich and hold a portion of the inner container 12 .
The body portion 16, the shoulder portion 15 and the bottom portion 14 are continuous in the direction of the bottle axis O without a step.

As shown in FIGS. 3 and 4, the shoulder portion 15, the body portion 16, and the bottom portion 14 each have a plan view shape viewed from the direction of the bottle axis O. As shown in FIGS. It has a flattened shape. That is, the shoulder portion 15, the body portion 16, and the bottom portion 14 exhibit a flat cross-sectional shape having a short axis O1 and a long axis O2 that intersect each other on the bottle axis O. As shown in FIG.
Hereinafter, when viewed from the bottle axis O direction, the direction in which the pair of long side portions 22 face each other will be referred to as the direction of the short axis O1, and the direction in which the pair of short side portions 21 will face each other will be referred to as the direction of the long axis O2.

As shown in FIG. 2, the size of the shoulder portion 15 in the direction of the long axis O2 gradually increases from the upper side to the lower side. As shown in FIG. 1, the size of the shoulder portion 15 in the minor axis O1 direction is uniform over the entire length in the bottle axis O direction.
The size of the trunk portion 16 in the direction of the major axis O2 is 1.2 times or more and 2.3 times or less, preferably 1.4 times or more and 2.0 times or less of the size of the trunk portion 16 in the direction of the short axis O1. ing. In the illustrated example, the size of the body portion 16 in the direction of the long axis O2 is approximately 1.8 times the size of the body portion 16 in the direction of the short axis O1.

In this embodiment, as shown in FIGS. 3 and 4, at least a portion of each of the pair of short side portions 21 of the trunk portion 16 has a corner portion 23 sharpened outward in the direction of the long axis O2. .

The corner portion 23 is arranged over the entire length of the short side portion 21 of the body portion 16 in the bottle axis O direction. The corner portion 23 is arranged in the central portion of the short side portion 21 in the direction of the short axis O1. The inner surface of the outer container 11 and the outer surface of the inner container 12 are bonded over the entire length in the direction of the bottle axis O at each portion along the circumferential direction where the corners 23 are located. Here, the intake holes 17 are formed at both ends of the opening 11a of the outer container 11 in the direction of the minor axis O1. As a result, the outside air from the intake hole 17 is introduced into each portion between the inner surface of the outer container 11 and the outer surface of the inner container 12 where the pair of long side portions 22 are located.
The short side portion 21 of the body portion 16 is composed of a corner portion 23 and a pair of first connection portions 24 extending separately from both ends of the corner portion 23 in the direction of the short axis O1 toward the long side portion 22 side. there is

Here, the short side portion 21 of the body portion 16 is formed by connecting at least one of an arc and a straight line when viewed from the bottle axis O direction. In the illustrated example, the short side portion 21 of the body portion 16 is formed by connecting two circular arcs when viewed from the bottle axis O direction. That is, the corner portion 23 and the pair of first connection portions 24 have an arcuate shape protruding outward in the radial direction when viewed from the bottle axis O direction. When viewed from the bottle axis O direction, the radius of curvature of the corner portion 23 (eg, about 6 mm) is smaller than the radius of curvature of the first connecting portion 24 (eg, about 25 mm). For example, the radius of curvature of the first connection portion 24 is at least twice the radius of curvature of the corner portion 23 .
Note that the short side portion 21 of the body portion 16 may be configured by connecting three or more circular arcs or may be configured by connecting a plurality of straight lines when viewed from the direction of the bottle axis O. It may be configured by connecting arcs and straight lines.

An angle θ1 formed by tangent lines L1 at respective connecting portions between the corner portion 23 and the pair of first connecting portions 24 is 90° or more and 140° or less in a plan view seen from the direction of the bottle axis O. In the illustrated example, the angle θ1 is about 130°.
A short side portion 21 of the body portion 16 has a symmetrical shape with respect to the long axis O2 in a plan view seen from the bottle axis O direction.

The pair of long side portions 22 of the body portion 16 includes a flat portion 25 extending along both the long axis O2 direction and the bottle axis O direction, and the short side portion 21 side from both ends of the flat portion 25 in the long axis O2 direction. and a pair of second connecting portions 26 separately extending toward each other.

The central portion of the plane portion 25 in the direction of the long axis O2 is positioned at the central portion of the long side portion 22 in the direction of the long axis O2. The length of the flat portion 25 in the direction of the major axis O2 is longer than the length of the second connection portion 26 in the direction of the major axis O2.
The second connecting portion 26 has an arcuate shape protruding radially outward when viewed from the bottle axis O direction. When viewed from the bottle axis O direction, the radius of curvature of the second connecting portion 26 (for example, approximately 15 mm) is larger than the radius of curvature of the corner portion 23 and smaller than the radius of curvature of the first connecting portion 24 . For example, when viewed from the bottle axis O direction, the radius of curvature of the second connection portion 26 is 1.5 times or more and 3.0 times or less of the radius of curvature of the corner portion 23 .
The long side portion 22 of the body portion 16 is symmetrical with respect to the short axis O1 in a plan view seen from the bottle axis O direction.
Note that the long side portion 22 of the body portion 16 may be configured by connecting a plurality of arcs, may be configured by connecting a plurality of straight lines, or may be configured by connecting a plurality of arcs and It may be configured by connecting straight lines.

In this embodiment, the raised bottom portion 32 of the bottom portion 14 includes a depressed recess 34 and an introduction recess 35 .
As shown in FIGS. 1 and 4, the recessed portion 34 is arranged in the central portion of the bottom portion 14 in the direction of the minor axis O1. The introduction recess 35 connects the opening peripheral edge of the depressed recess 34 and the inner peripheral edge of the grounding portion 31 in the direction of the minor axis O1.

The recessed portion 34 is formed over the entire length of the bottom portion 14 in the direction of the major axis O2. As shown in FIG. 4, the depression 34 penetrates the grounding portion 31 in the direction of the major axis O2. The width of the depressed portion 34 gradually narrows outward from the central portion in the direction of the major axis O2 over the entire length except for both end portions 34a in the direction of the major axis O2.
As shown in FIG. 1, the depression 34 has an arcuate shape that opens downward when viewed from the direction of the long axis O2. As shown in FIG. 2, the recessed portion 34 has a curvilinear shape that protrudes upward over the entire area except for both ends 34a in the direction of the major axis O2 when viewed from the direction of the minor axis O1. That is, the bottom-up amount of the recessed portion 34 gradually decreases from the central portion in the direction of the long axis O2 toward the outer side. The bottom-lifting amount of both end portions 34a in the long axis O2 direction of the recessed portion 34 is equal over the entire length in the long axis O2 direction.
As shown in FIG. 4, the depressed recess 34 has a line-symmetrical shape with respect to each of the short axis O1 and the long axis O2 when viewed from the bottle axis O direction.

As shown in FIG. 1, in a cross-sectional view along both the direction of the short axis O1 and the direction of the bottle axis O, the widening angle θ2 of the depression 34 is greater than 100° and less than or equal to 140°. In the illustrated example, in the cross-sectional view, the widening angle θ2 at the central portion of the recessed portion 34 in the direction of the long axis O2 is approximately 130°, for example.
In the cross-sectional view, the opening width X of the recessed portion 34 in the bottom portion 14 is 12 mm or more and 18 mm or less. The opening width X is 0.35 times or more and 0.54 times or less the size of the trunk portion 16 in the direction of the short axis O1. In the illustrated example, in the cross-sectional view, the opening width X of the central portion of the depression 34 in the bottom 14 in the direction of the long axis O2 is, for example, about 15 mm.

As shown in FIG. 1, the introduction recess 35 gradually extends upward from the outer side toward the inner side in the direction of the short axis O1. The introduction recess 35 is connected to the depression recess 34 via a downward curved surface portion.
The holding rib 33 described above protrudes downward from the inner surface of the recess 34 and extends in the direction of the major axis O2. The retaining ribs 33 are arranged on the longitudinal axis O2. Both ends of the holding rib 33 in the direction of the major axis O2 are located separately at both ends 34a of the depression 34 in the direction of the major axis O2.
At the lower end of the trunk portion 16, inclined portions 16a and 16b that gradually extend radially inward along the downward direction are formed over the entire circumference. Of the inclined portions 16a and 16b, the portion 16a positioned on the short side portion 21 is longer in the direction of the bottle axis O than the portion 16b positioned on the long side portion 22, The radial distance from the upper end is longer.

In the illustrated example, the outer surface of the portion of the trunk portion 16 located above the lower end has a size of about 60 mm in the direction of the major axis O2 and a size of about 34 mm in the direction of the minor axis O1. The overall size of the body portion 16 and the shoulder portion 15 in the direction of the bottle axis O is approximately 118 mm. The weight of the squeeze bottle 1 is approximately 12 g.

Next, the cap 50 attached to the mouth portion 13 of the squeeze bottle 1 will be described.
The cap 50 includes an inner plug portion 51, a cap body 52, a lid portion 53, a discharge valve 54, and an air valve 55, as shown in FIG.

The inner plug portion 51 is arranged at the upper opening edge of the mouth portion 13 of the squeeze bottle 1 and has a communication hole 51 a that communicates with the inner container 12 .
The cap main body 52 is formed in a capped cylindrical shape, and is screwed onto the mouth portion 13 of the squeeze bottle 1 to cover the inner plug portion 51 . The lower end portion of the peripheral wall portion 52c of the cap body 52 is fitted onto the sealed projection portion 18 of the outer container 11 to ensure the sealing performance therebetween. The top wall portion of the cap body 52 is formed with an outside air introduction hole 52a that communicates with the outside and the intake hole 17 of the squeeze bottle 1, and a discharge hole 52b that can communicate with the communication hole 51a. The outside air introduction holes 52a are formed at the outer peripheral edge of the top wall portion of the cap body 52, and are located on both sides of the long axis O2 in the direction of the short axis O1.
The lid portion 53 opens and closes the outside air introduction hole 52a and the discharge hole 52b, and is connected to the cap main body 52 via a hinge portion 56. As shown in FIG. The hinge portion 56 connects end portions of the cap main body 52 and the lid portion 53 in the direction of the long axis O2. The discharge hole 52b is arranged in the ceiling wall portion of the cap main body 52 at a position shifted from the central portion along the direction of the long axis O2 to the side opposite to the hinge portion 56 side.
The discharge valve 54 is a so-called one-point valve, and is arranged between the top wall portion of the cap body 52 and the inner plug portion 51 . The discharge valve 54 opens and closes the communication hole 51a according to fluctuations in the internal pressure of the inner container 12, and switches communication between the communication hole 51a and the discharge hole 52b.
The air valve 55 is disposed between the top wall portion of the cap body 52 and the inner plug portion 51, and is adapted to open the outside air introduction hole 52a and the air intake hole 17 according to the internal pressure fluctuation between the outer container 11 and the inner container 12. switch between communication and disconnection.

A method of using the squeeze bottle 1 with the cap 50 configured as described above will be described.

When the contents are to be discharged, first, the lid portion 53 of the cap 50 is rotated upward around the hinge portion 56 to open the outside air introduction hole 52a and the discharge hole 52b, and then, for example, the squeeze bottle 1 is tilted or tilted. The outer container 11 of the squeeze bottle 1 is squeeze-deformed (elastically deformed) while being turned upside down. As a result, the inner container 12 is deformed and reduced in volume together with the outer container 11, and the internal pressure of the inner container 12 is increased.
Then, the discharge valve 54 is opened, and the discharge hole 52b and the inside of the inner container 12 communicate with each other through the communication hole 51a. Thereby, the contents stored inside the inner container 12 can be discharged to the outside through the discharge hole 52b.
Here, when the squeeze bottle 1 is squeeze-deformed, the internal pressure between the outer container 11 and the inner container 12 rises, and this internal pressure acts on the air valve 55 through the intake hole 17, so that the air valve 55 closes the cap. It abuts against the lower surface of the top wall portion of the main body 52 and closes the outside air introduction hole 52a.

After that, when the squeeze deformation of the squeeze bottle 1 is stopped or released to stop or decrease the internal pressure of the inner container 12, the discharge valve 54 closes the communication hole 51a, and the discharge hole 52b and the inside of the inner container 12 are connected. The communication is blocked and the discharge of the contents is stopped.
In addition, when the squeeze deformation of the squeeze bottle 1 is released, the outer container 11 starts to be restored and deformed, so that a negative pressure is generated between the outer container 11 and the inner container 12 . Then, this negative pressure acts on the air valve 55 through the air intake hole 17, so that the air valve 55 moves downward from the lower surface of the ceiling wall portion of the cap body 52 to open the outside air introduction hole 52a. As a result, outside air flows in from the outside through the outside air introduction hole 52a, and this outside air flows between the inner container 12 and the outer container 11 through the intake hole 17. As shown in FIG.
As a result, even if the outer container 11 is restored and deformed, the inner container 12 can be separated from the inner surface of the outer container 11 and kept in the state of being reduced and deformed.

As described above, according to the squeeze bottle 1 according to the present embodiment, the plane view shape of the body portion 16 seen from the direction of the bottle axis O is a flat shape having a pair of short side portions 21 and a pair of long side portions 22. Therefore, when the pair of long side portions 22 of the body portion 16 are pushed in the direction of the short axis O1 facing each other, the pair of long side portions 22 are easily deformed over a wide range. A pushing force can be effectively transmitted into the inner container 12 .

In addition, since the pair of short side portions 21 are provided with corner portions 23 that are pointed outward in the direction of the long axis O2, when the pair of long side portions 22 of the trunk portion 16 are pushed in as described above, the corner portions Bending 23 makes it easier to deform body 16 so that the pair of long side portions 22 come closer to each other. Therefore, the contents in the inner container 12 can be easily discharged, and, for example, when the remaining amount of the contents in the inner container 12 is low, or when the high-viscosity contents in the inner container 12 are discharged. Even when it is housed, the contents in the inner container 12 can be discharged with a small pressing force.

In addition, since the short side portion 21 is formed by connecting at least one of an arc and a straight line when viewed from the direction of the bottle axis O, the short side portion 21 having the corner portions 23 can be easily designed. can.

Further, in plan view from the direction of the bottle axis O, the angle θ1 formed by the tangent lines L1 at the connection portions between the corner portion 23 and the pair of first connection portions 24 is 90° or more and 140° or less. When the pair of long side portions 22 of the body portion 16 are pushed as described above while ensuring the resilience of the outer container 11 when the pair of long side portions 22 of the body portion 16 are released from being pushed in, , the corner 23 can be easily bent.
That is, if the angle is smaller than 90°, it becomes difficult to ensure the stability of the outer container 11 described above. , the corners are less likely to bend when pushed in as described above.

Further, since the short side portions 21 have a symmetrical shape with respect to the long axis O2 in a plan view seen from the direction of the bottle axis O, when the pair of long side portions 22 of the barrel portion 16 are pushed in as described above, In addition, the corner portion 23 can be bent more reliably.

In addition, since the intake hole 17, the sealed projection 18, and the annular groove 19 are formed in this order from the top to the bottom in the mouth portion 13, deformation when the body portion 11c of the outer container 11 is pushed in is prevented. , is blocked by the annular groove 19 and can be restricted from propagating to the sealed projection 18 . As a result, for example, when the remaining amount of contents in the inner container 12 is low, even if the upper portion of the body portion 16 and the shoulder portion 15 are strongly pushed in, the sealed projecting portion 18 and the peripheral wall portion of the cap 50 will remain closed. 52c can be maintained.

In the squeeze bottle 1 configured as described above, among the contents described above, mayonnaise, which has a relatively high viscosity at 23° C. and has a viscosity of 20,000 mPa·s to 50,000 mPa·s, is contained inside the inner container 12. When housed, the pressing force required to eject the contents and the resilience of the outer container 11 described above can be made particularly appropriate.

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 scope of the present invention.

For example, in the above-described embodiment, the concave portion 34 is formed over the entire length of the bottom portion 14 in the direction of the major axis O2. It may be formed in the part where
Further, the recessed portion 34 may have a curvilinear shape that protrudes upward over the entire area including both end portions 34a in the direction of the major axis O2 when viewed from the direction of the minor axis O1.
Further, as the raised bottom portion 32 of the bottom portion 14, a configuration that does not have the introduction recess portion 35 may be employed.

Further, the long side portion 22 of the body portion 16 may be configured by one arc or one straight line when viewed from the bottle axis O direction.
In addition, the short side portion 21 of the body portion 16 may have an asymmetrical shape with respect to the long axis O2 in a plan view seen from the direction of the bottle axis O, and the long side portion 22 of the body portion 16 may have a shape similar to that of the bottle. It may have an asymmetrical shape with respect to the minor axis O1 in a plan view seen from the direction of the axis O.
Alternatively, the body 16 may extend straight in the direction of the bottle axis O over the entire area including the bottom end without forming the inclined portions 16a and 16b at the bottom end of the body 16 .
Further, in the above-described embodiment, the corner portions 23 are arranged over the entire length of the short side portion 21 of the body portion 16 in the bottle axis O direction. By selecting and limiting the position, it is possible to adjust the pressing force required when discharging the contents, the resilience of the outer container 11 described above, and the like.

The synthetic resin material forming the squeeze bottle 1 may be appropriately changed, for example, polyethylene terephthalate, polyethylene naphthalate, amorphous polyester, or a blend material thereof.

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

1 Squeeze Bottle 11 Outer Container 12 Inner Container 13 Mouth 14 Bottom 16 Body 17 Suction Hole 18 Sealed Projection 19 Annular Groove 21 Short Side 22 Long Side 23 Corner 24 Connection (First Connection)
50 cap 52c peripheral wall portion L1 tangent line O bottle axis O1 minor axis O2 major axis θ1 angle

Claims (5)

An inner container that reduces and deforms in accordance with a decrease in the content to be accommodated, and an outer container in which the inner container is accommodated are provided, and the mouth, body, and bottom extend downward along the axial direction of the bottle. It is connected in this order towards
A squeeze bottle in which at least the body portion of the outer container is elastically deformable,
At least the barrel portion has a long axis and a short axis that intersect with each other on the bottle axis, and has a flattened shape having a pair of short sides and a pair of long sides when viewed from the direction of the bottle axis. is,
At least a part of each of the pair of short side portions of the trunk portion has corners that sharpen outward in the long axis direction in which the long axis extends ,
an intake hole for introducing outside air between the outer container and the inner container is formed in the mouth of the outer container;
The squeeze bottle , wherein the air intake holes are formed at both ends of the opening of the outer container in the direction of the short axis in which the short axis extends . 2. The squeeze bottle according to claim 1, wherein said short side portion is formed by connecting at least one of arcs and straight lines when viewed from the axial direction of the bottle. The short side portion includes the corner portion and a pair of connection portions separately extending from both ends of the corner portion in the short axis direction toward the long side portion,
3. The method according to claim 1 or 2, wherein an angle formed by tangent lines at each connecting portion between the corner portion and the pair of connecting portions is 90° or more and 140° or less in a plan view seen from the axial direction of the bottle. squeeze bottle. 4. The squeeze bottle according to any one of claims 1 to 3, wherein said short side portion presents a symmetrical shape with respect to said long axis in a plan view seen from the axial direction of the bottle. at the mouth of the outer container,
the intake hole;
a sealed protrusion that bulges outward in the radial direction, extends continuously over the entire circumference, and onto which the peripheral wall of the cap is fitted;
5. The squeeze bottle according to any one of claims 1 to 4, further comprising: a recess extending radially inward; and an annular groove extending continuously over the entire circumference.

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