JP2020033086A - Squeeze bottle - Google Patents

Abstract

To allow the contents of an inner container to be easily discharged.SOLUTION: A squeeze bottle 1 includes an inner container 12 that reduces its volume and deforms with the decrease of its contents, and an outer container having the inner container housed therein, a mouth portion 13, a barrel portion 16, and a bottom portion of which are continuously provided in this order from top to bottom along a direction of a bottle axis O, at least a barrel portion of the outer container being formed elastically deformable. At least the barrel portion has a major axis O2 and a minor axis O1 that intersect each other on the bottle axis, a planar view seen from the bottle axis direction is shaped flat, with a pair of short side portions 21 and a pair of long side portions 22, and at least a portion of each of the pair of short side portions in the barrel portion includes a corner 23 that is pointed outward in a major axis direction in which the major axis extends.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a squeeze bottle.

  2. Description of the Related Art Conventionally, for example, as shown in Patent Literature 1 below, an inner container that has a volume reduced and deformed in accordance with a decrease in contents to be accommodated, and a body that has an inner container and is formed to be elastically deformable. 2. Description of the Related Art A squeeze bottle is known which includes an outer container and discharges contents in an inner container through a mouth portion by pushing a body of the outer container.

JP 2018-87036 A

  However, in the conventional squeeze bottle, there is room for improvement in easily discharging the contents in the inner container.

  The present invention has been made in view of the above-described circumstances, and has as its object to provide a squeeze bottle that can easily discharge the contents in an inner container.

  The present invention employs the following means in order to solve the above problems. That is, the squeeze bottle of the present invention includes an inner container whose volume is reduced and deformed due to a decrease in the content to be stored, and an outer container in which the inner container is provided, and a mouth, a body, and a bottom are bottles. A squeeze bottle that is connected in this order from top to bottom along the axial direction and at least the body of the outer container is formed to be elastically deformable, and at least the body is a bottle shaft. It has a major axis and a minor axis that intersect each other above, and the planar view shape as viewed from the bottle axis direction is a flat shape having a pair of short sides and a pair of long sides, and a pair of At least a part of each of the short side portions includes a corner pointed toward the outside in a long axis direction in which the long axis extends.

According to the present invention, the shape of the body viewed from the axial direction of the bottle is a flat shape having a pair of short sides and a pair of long sides. When they are pushed in the short axis direction facing each other, the pair of long sides is easily deformed greatly over a wide range, and the pushing force at this time can be effectively transmitted to the inner container.
In addition, since at least a part of each of the pair of short side portions has a corner pointed toward the outside in the long axis direction, when the pair of long side portions in the trunk portion are pushed in as described above, the corner portion is formed. Is bent, so that the body can be easily deformed so that the pair of long sides approach each other. Therefore, the contents in the inner container can be easily discharged, and, for example, when the remaining amount of the contents in the inner container is reduced, or when the high-viscosity contents are stored in the inner container. Even in such a case, the contents in the inner container can be discharged with a small pressing force.

  Here, when viewed from the bottle axial direction, the short side portion may be configured by connecting at least one of an arc and a straight line.

  In this case, when viewed from the bottle axial direction, since the short side portion is configured by connecting at least one of an arc and a straight line, the short side portion having the corner can be easily designed.

  In addition, the short side portion includes the corner portion, and a pair of connection portions extending separately from both ends in the short axis direction in which the short axis extends in the corner portion toward the long side portion side, the bottle, In a plan view viewed from the axial direction, an angle formed by tangents 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, the angle between the tangents at each connection portion between the corner and the pair of connection portions is 90 ° or more and 140 ° or less in a plan view as viewed from the bottle axis direction. When the pair of long sides of the body are pushed in as described above, the corners can be easily bent while ensuring the resilience of the outer container when the aforementioned pushing of the sides is released. .
That is, if the angle is smaller than 90 °, it is difficult to secure the resilience of the outer container described above, and if the angle is larger than 140 °, the pair of long sides of the trunk portion are Corners are less likely to bend when pushed in.

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

  In this case, the short side portion has a symmetrical shape with respect to the long axis in a plan view as viewed from the bottle axis direction. Therefore, when the pair of long side portions in the body are pushed in as described above, the corner portion is formed. Can be more reliably bent.

  Further, at the mouth of the outer container, an intake hole for introducing outside air between the outer container and the inner container, and swells radially outward, continuously extends over the entire circumference, and has a cap. A sealed projection to which the peripheral wall portion is fitted externally, and an annular groove that is depressed inward in the radial direction and extends continuously over the entire circumference may be formed in this order from top to bottom.

  In this case, since the air inlet, the sealed projection, and the annular groove are formed in this order from the upper side to the lower side, deformation when the body of the outer container is pushed in is stopped by the annular groove. Therefore, propagation to the sealed projection can be restricted. Thereby, for example, when the remaining amount of the contents in the inner container becomes small, the seal between the sealed projection and the peripheral wall of the cap is maintained even if the upper part of the body is strongly pushed. be able to.

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

FIG. 3 is a side view including a partial cross section viewed from a long axis direction in a state in which a discharge cap is mounted on the squeeze bottle shown as one embodiment according to the present invention. FIG. 2 is a side view including a partial cross section viewed from a short axis direction in a state in which a discharge cap is attached to a squeeze bottle shown as one embodiment according to the present invention. FIG. 3 is a top view of the squeeze bottle shown in FIGS. 1 and 2. FIG. 3 is a bottom view of the squeeze bottle shown in FIGS. 1 and 2.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the squeeze bottle 1 is a laminated peeling-type container (delamid bottle) in which an inner container 12 is laminated on an inner surface of an outer container 11 so as to be peelable. The squeeze bottle 1 is formed into a bottomed cylindrical shape by forming a double (inner and outer) 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, and the inner container 12 and the outer container 11 may be the same material or different materials as long as the combination can reduce the volume of the outer container 11 independently. Examples of the synthetic resin material include, for example, 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 a material selected from these synthetic resin materials so as to form a combination that allows them to be separated from each other.

The inner container 12 accommodates the contents therein and deforms to reduce the volume as the contents decrease. The inner container 12 is provided inside the outer container 11. Examples of the contents include mayonnaise, ketchup, medium-concentrated sauce, miso, and dressing, and those having a relatively high viscosity of about 1000 mPa · s to 100,000 mPa · s at 23 ° C. The viscosity can be determined by a method according to JIS K7117-1 using a B-type viscometer (rotational viscometer).
The contents contained in the inner container 12 may be of low viscosity.

The squeeze bottle 1 includes a mouth portion 13, a shoulder portion 15, a trunk portion 16, and a bottom portion 14. The mouth 13, the shoulder 15, the trunk 16 and the bottom 14 are arranged in this order coaxially with a common axis.
Hereinafter, this common axis is referred to as a bottle axis O, and the mouth 13 side of the squeeze bottle 1 along the bottle axis O is referred to as an upper side, and the bottom 14 side of the squeeze bottle 1 is referred to as a lower side. When viewed from the direction of the bottle axis O, a direction intersecting the bottle axis O is referred to as a radial direction, and a direction of orbit around the bottle axis O is referred to as a circumferential direction.

The mouth 13 of the squeeze bottle 1 is formed by laminating the mouth 12a of the inner container 12 and the mouth 11a of the outer container 11, and the shoulder 15 of the squeeze bottle 1 is 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. Is done.
In the following description, it is assumed that both the inner container 12 and the outer container 11 have the same form unless otherwise specified.

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

On the outer surface of the mouth 11a of the outer container 11, a male screw portion to which a cap 50 described later is screwed is formed. At the mouth 11a of the outer container 11, an intake hole 17 for introducing outside air between the outer container 11 and the inner container 12, and a bulge radially outward, continuously extending over the entire circumference, and a cap described later. The seal projection 18 to which the peripheral wall portion 52c of 50 is fitted is formed, and the annular groove 19 which is depressed inward in the radial direction and extends continuously over the entire circumference is formed in this order from top to bottom. I have. The lower end of the annular groove 19 is connected to the upper end of the shoulder 15.
The position where the air inlet 17 is formed is not limited to the mouth 11a of the outer container 11, but may be, for example, the body 11c or the bottom 11d of the outer container 11 other than the mouth 11a.

The body 16 extends straight in the bottle axis O direction over the entire region except the lower end. At least the body portion 11c of the outer container 11 can be squeezed (elastically deformed), and the inner container 12 is deflated and deformed with the squeeze deformation of the outer container 11. In the illustrated example, the shoulder 11b of the outer container 11 is also squeezable.
An annular grounding portion 31 located on the outer peripheral edge portion, a bottom raising portion 32 continuously provided on the inner peripheral edge portion of the grounding portion 31 and recessed upward, and an inner surface of the bottom raising portion 32 are formed on the bottom portion 14. A part of the container 11 is formed with a holding rib 33 holding a part of the inner container 12 therebetween.
The body 16, the shoulder 15 and the bottom 14 are continuous with each other in the direction of the bottle axis O.

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

As shown in FIG. 2, the size of the shoulder 15 in the direction of the major 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 short axis O1 direction is equal over the entire length in the bottle axis O direction.
The size of the body 16 in the major axis O2 direction is 1.2 to 2.3 times, preferably 1.4 to 2.0 times the size of the body 16 in the short axis O1 direction. ing. In the illustrated example, the size of the body 16 in the long axis O2 direction is about 1.8 times the size of the body 16 in the short axis O1 direction.

  In the present embodiment, as shown in FIGS. 3 and 4, at least a part of each of the pair of short side portions 21 in the body portion 16 includes a corner portion 23 that is pointed outward in the direction of the long axis O2. .

The corner 23 is disposed over the entire length of the short side portion 21 of the body 16 in the direction of the bottle axis O. The corner 23 is arranged at the center 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 adhered over the entire length in the direction of the bottle axis O in each part along the circumferential direction where the corner 23 is located. Here, the intake holes 17 are formed at both ends of the mouth 11a of the outer container 11 in the direction of the short axis O1. Thus, the outside air from the air inlet 17 is introduced into each of the portions 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 configured by a corner portion 23 and a pair of first connection portions 24 extending separately from both ends of the corner portion 23 in the short axis O1 direction toward the long side portion 22. I have.

Here, the short side portion 21 of the body 16 is configured by connecting at least one of an arc and a straight line when viewed from the direction of the bottle axis O. In the illustrated example, the short side portion 21 of the body 16 is formed by connecting two arcs when viewed from the direction of the bottle axis O. That is, the corner portion 23 and the pair of first connection portions 24 have a circular arc shape projecting outward in the radial direction when viewed from the bottle axis O direction. When viewed from the direction of the bottle axis O, the radius of curvature of the corner 23 (for example, about 6 mm) is smaller than the radius of curvature of the first connection part 24 (for example, 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.
The short side portion 21 of the body 16 may be formed by connecting three or more arcs as viewed from the direction of the bottle axis O, or may be formed by connecting a plurality of straight lines, An arc and a straight line may be connected to each other.

In a plan view seen from the direction of the bottle axis O, the angle θ1 formed by the tangents 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. In the illustrated example, the angle θ1 is approximately 130 °.
The short side portion 21 of the body 16 has a symmetrical shape with respect to the long axis O2 in a plan view as viewed from the bottle axis O direction.

  The pair of long side portions 22 in the body 16 are formed by a flat portion 25 extending in both directions of the long axis O2 direction and the bottle axis O direction, and from both ends in the long axis O2 direction of the flat portion 25 to the short side portion 21 side. And a pair of second connection portions 26 extending separately toward the second connection portion 26.

The central portion of the flat portion 25 in the major axis O2 direction is located at the central portion of the long side portion 22 in the major axis O2 direction. The length of the flat portion 25 in the major axis O2 direction is longer than the length of the second connection portion 26 in the major axis O2 direction.
The second connecting portion 26 has a circular arc shape projecting outward in the radial direction when viewed from the direction of the bottle axis O. When viewed from the direction of the bottle axis O, the radius of curvature (for example, about 15 mm) of the second connection portion 26 is larger than the radius of curvature of the corner portion 23 and smaller than the radius of curvature of the first connection portion 24. For example, when viewed from the direction of the bottle axis O, the radius of curvature of the second connecting portion 26 is 1.5 times or more and 3.0 times or less the radius of curvature of the corner 23.
The long side portion 22 of the body 16 has a symmetrical shape with respect to the short axis O1 in plan view when viewed from the bottle axis O direction.
The long side portion 22 of the body 16 may be formed by connecting a plurality of arcs, or may be formed by connecting a plurality of straight lines, as viewed from the direction of the bottle axis O. Straight lines may be connected to each other.

In the present embodiment, the raised portion 32 of the bottom portion 14 includes a recessed recess 34 and an introduction recess 35.
As shown in FIGS. 1 and 4, the depressed concave portion 34 is provided at the center of the bottom 14 in the direction of the short axis O1. The introduction concave portion 35 connects the peripheral edge of the opening of the concave concave portion 34 and the internal peripheral edge of the ground portion 31 in the short axis O1 direction.

The depression 34 is formed over the entire length of the bottom 14 in the direction of the major axis O2. As shown in FIG. 4, the depressed concave portion 34 penetrates the ground contact portion 31 in the direction of the long axis O2. The width of the depressed recess 34 gradually decreases from the center in the long axis O2 direction to the outside over the entire length excluding the both ends 34a in the long axis O2 direction.
As shown in FIG. 1, the depressed concave portion 34 has an arc shape that opens downward when viewed from the direction of the long axis O2. As shown in FIG. 2, the depressed concave portion 34 has a curved shape protruding upward over the entire region except for both end portions 34a in the long axis O2 direction when viewed from the short axis O1 direction. That is, the amount by which the recess 34 is raised from the center in the direction of the long axis O2 toward the outside gradually decreases. The amount of bottom raising of both ends 34a in the long axis O2 direction in the depressed recess 34 is equal over the entire length in the long axis O2 direction.
As shown in FIG. 4, the depression 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 opening angle θ2 of the recess 34 is greater than 100 ° and 140 ° or less. In the illustrated example, in the cross-sectional view, the expansion angle θ2 at the center in the long axis O2 direction of the depressed recess 34 is, for example, about 130 °.
In the cross-sectional view, the opening width X of the depressed concave 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 body 16 in the short axis O1 direction. In the illustrated example, in the cross-sectional view, the opening width X of the central portion in the major axis O2 direction of the depressed concave portion 34 in the bottom portion 14 is, for example, about 15 mm.

As shown in FIG. 1, the introduction recess 35 gradually extends upward from the outside toward the inside in the direction of the short axis O1. The introduction concave portion 35 is connected to the depressed concave portion 34 via a curved surface projecting downward.
The holding rib 33 protrudes downward from the inner surface of the recess 34 and extends in the long axis O2 direction. The holding rib 33 is arranged on the long axis O2. Both ends of the holding rib 33 in the long axis O2 direction are respectively located at both ends 34a of the depressed recess 34 in the long axis O2 direction.
Here, inclined portions 16a and 16b are formed at the lower end portion of the body portion 16 to extend radially inward gradually toward the lower side over the entire circumference. Of the inclined portions 16a, 16b, the portion 16a located on the short side portion 21 has a longer length in the bottle axis O direction than the portion 16b located on the long side portion 22, and has a lower end connected to the grounding portion 31. The radial distance from the upper end is longer.

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

Next, the cap 50 attached to the mouth 13 of the squeeze bottle 1 will be described.
As shown in FIG. 2, the cap 50 includes an inner plug 51, a cap body 52, a lid 53, a discharge valve 54, and an air valve 55.

The inner plug portion 51 is disposed at the upper end 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 body 52 is formed in a cylindrical shape with a top and is screwed to the mouth portion 13 of the squeeze bottle 1 to cover the inner plug portion 51. The lower end of the peripheral wall portion 52c of the cap body 52 is externally fitted to the sealed projection 18 of the outer container 11 to ensure the sealing between them. On the top wall of the cap body 52, an outside air introduction hole 52a that communicates the outside with the intake hole 17 of the squeeze bottle 1 and a discharge hole 52b that can communicate with the communication hole 51a are formed. The outside air introduction holes 52a are formed on the outer peripheral edge of the top wall of the cap main body 52 at respective portions located on both sides sandwiching the long axis O2 in the short axis O1 direction.
The lid 53 opens and closes the outside air introduction hole 52a and the discharge hole 52b, and is connected to the cap body 52 via a hinge 56. The hinge 56 connects the ends of the cap body 52 and the lid 53 in the direction of the long axis O2. The discharge hole 52b is arranged on the top wall of the cap main body 52 at a position shifted from the center to the side opposite to the hinge 56 along the long axis O2 direction.
The discharge valve 54 is a so-called one-point valve, and is disposed between the top wall of the cap body 52 and the inner plug 51. The discharge valve 54 opens and closes the communication hole 51a according to the change 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 main body 52 and the inner plug portion 51, and according to a change in internal pressure between the outer container 11 and the inner container 12, the outside air introduction hole 52 a and the intake hole 17 are provided. Switch between communication and cutoff.

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

When discharging the contents, first, the lid 53 of the cap 50 is rotated upward around the hinge 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 The outer container 11 of the squeeze bottle 1 is squeezed (elastically deformed) while being turned upside down. As a result, the inner container 12 is deformed together with the outer container 11 to reduce the volume, so that the internal pressure of the inner container 12 increases.
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. Thus, the contents contained in the inner container 12 can be discharged to the outside through the discharge holes 52b.
Here, when the squeeze bottle 1 is squeezed and deformed, the internal pressure between the outer container 11 and the inner container 12 increases, and this internal pressure acts on the air valve 55 through the intake hole 17. It contacts the lower surface of the top wall of the main body 52 and closes the outside air introduction hole 52a.

Thereafter, by stopping or canceling the squeeze deformation of the squeeze bottle 1, when the increase in the internal pressure of the inner container 12 is stopped or reduced, the discharge valve 54 closes the communication hole 51a, and the communication between the discharge hole 52b and the inside of the inner container 12 is performed. The communication is interrupted, and the discharge of the contents is stopped.
Further, 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, since this negative pressure acts on the air valve 55 through the intake hole 17, the air valve 55 is separated downward from the lower surface of the top wall of the cap body 52, and opens the outside air introduction hole 52 a. As a result, outside air flows in from the outside through the outside air introduction hole 52 a, and the outside air flows between the inner container 12 and the outer container 11 through the suction hole 17.
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 can be kept in a state where the inner container 12 is deformed to reduce the volume.

  As described above, according to the squeeze bottle 1 according to the present embodiment, the plan view shape of the body 16 as viewed from the bottle axis O direction 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 sides 22 of the body 16 are pushed in the direction of the short axis O1 facing each other, the pair of long sides 22 can be easily deformed greatly over a wide range. The pushing force can be effectively transmitted into the inner container 12.

  Further, since the pair of short side portions 21 includes the corner portions 23 that are pointed outward in the direction of the major axis O2, when the pair of long side portions 22 in the body portion 16 are pushed in as described above, the corner portions are formed. Bending 23 makes it easier to deform body 16 so that a pair of long side portions 22 approach 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 reduced, or when the high-viscosity contents are in the inner container 12, Even when the contents are stored, the contents in the inner container 12 can be discharged with a small pressing force.

  Further, when viewed from the direction of the bottle axis O, since the short side portion 21 is configured by connecting at least one of an arc and a straight line, the short side portion 21 including the corner portion 23 can be easily designed. it can.

Further, since the angle θ1 formed by the tangents 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 in a plan view viewed from the bottle axis O direction, When the pair of long sides 22 of the body 16 are pushed in as described above, while ensuring the resilience of the outer container 11 when the aforementioned pushing of the pair of long sides 22 in the body 16 is released. , The corner 23 can be easily bent.
That is, if the angle is smaller than 90 °, it is difficult to secure the resilience of the outer container 11 described above, and if the angle is larger than 140 °, the pair of long sides 22 of the body 16 When pressed in as described above, the corners are less likely to bend.

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

  In addition, since the air inlet 17, the sealed projection 18, and the annular groove 19 are formed in the opening 13 in this order from above to below, deformation when the body 11 c of the outer container 11 is pushed in is prevented. , And is prevented by the annular groove 19 from propagating to the sealed projection 18. Thereby, for example, when the remaining amount of the contents in the inner container 12 becomes small, even if the upper part of the body part 16 and the shoulder part 15 are pushed firmly, for example, the sealed projection 18 and the peripheral wall part of the cap 50 are formed. 52c can be maintained.

  In the squeeze bottle 1 configured as described above, among the contents described above, the viscosity at 23 ° C. and the viscosity at 23 ° C. of 20,000 mPa · s to 50,000 mPa · s, for example, mayonnaise or the like is contained in the inner container 12. When stored, the pushing force required for discharging 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 embodiment, and various changes can be made without departing from the spirit of the present invention.

For example, in the above-described embodiment, the configuration in which the recessed portion 34 is formed over the entire length of the bottom portion 14 in the long axis O2 direction is shown, but the recessed portion 34 is located on the bottom portion 14 radially inward of the ground portion 31. It may be formed in the portion where it does.
Further, the depressed concave portion 34 may have a curved shape protruding upward over the entire region including both ends 34a in the long axis O2 direction when viewed from the short axis O1 direction.
Further, a configuration without the introduction concave portion 35 may be employed as the bottom raising portion 32 of the bottom portion 14.

In addition, the long side portion 22 of the body 16 may be configured by one arc or one straight line when viewed from the bottle axis O direction.
Further, the short side portion 21 of the body 16 may have an asymmetric shape with respect to the long axis O2 in a plan view viewed from the bottle axis O direction. When viewed in a plan view from the axis O direction, it may have an asymmetric shape with respect to the short axis O1.
Alternatively, the inclined portion 16a, 16b may not be formed at the lower end of the body 16, and the body 16 may extend straight in the direction of the bottle axis O over the entire region including the lower end.
Further, in the above-described embodiment, the configuration in which the corner 23 is disposed over the entire length of the short side portion 21 of the body 16 in the direction of the bottle axis O is shown, but in the direction of the bottle axis O where the corner 23 is disposed. By selecting and limiting the position, the pushing force required for discharging the contents and the resilience of the outer container 11 described above may be adjusted.

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

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

DESCRIPTION OF SYMBOLS 1 Squeeze bottle 11 Outer container 12 Inner container 13 Mouth part 14 Bottom part 16 Body part 17 Intake hole 18 Sealed projection 19 Annular groove 21 Short side part 22 Long side part 23 Corner part 24 Connection part (1st connection part)
50 Cap 52c Peripheral wall part L1 Tangent line O Bottle axis O1 Short axis O2 Long axis θ1 Angle

Claims (5)

An inner container that is deformed to reduce in volume with a decrease in the content to be accommodated, and an outer container in which the inner container is provided, and a mouth, a body, and a bottom are downwardly from above along the bottle axial direction. It is established in this order for
At least the trunk portion of the outer container is a squeeze bottle formed to be elastically deformable,
At least the body has a major axis and a minor axis that intersect each other on the bottle axis, and has a flat shape having a pair of short sides and a pair of long sides, as viewed in the bottle axis direction. And
A squeeze bottle in which at least a part of each of the pair of short sides in the body includes a corner that is pointed outward in a major axis direction in which the major axis extends.   The squeeze bottle according to claim 1, wherein the short side portion is configured by connecting at least one of an arc and a straight line when viewed from the bottle axis direction. The short side portion includes the corner portion, and a pair of connection portions extending separately from both ends in the short axis direction in which the short axis extends in the corner portion toward the long side portion side,
3. The angle according to claim 1, wherein an angle formed by tangents at each connection portion between the corner portion and the pair of connection portions is 90 ° or more and 140 ° or less in a plan view viewed from the bottle axis direction. 4. Squeeze bottle.   The squeeze bottle according to any one of claims 1 to 3, wherein the short side portion has a symmetrical shape with respect to the long axis when viewed in a plan view from the bottle axis direction. In the mouth of the outer container,
An air inlet for introducing outside air between the outer container and the inner container,
A sealed projection that bulges outward in the radial direction, extends continuously over the entire circumference, and the outer peripheral wall of the cap is externally fitted;
The squeeze bottle according to any one of claims 1 to 4, wherein an annular groove that is depressed inward in the radial direction and extends continuously over the entire circumference is formed in this order from top to bottom.

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