JP7454957B2 - squeeze container - Google Patents

Description

TECHNICAL FIELD The present invention relates to a squeeze container.

Conventionally, as shown in Patent Document 1 below, for example, a container body in which contents are stored, and a discharge cap that is attached to the mouth of the container body and has a discharge hole through which the contents are discharged. , the discharge cap is formed with a slit that blocks communication between the inside of the container body and the outside through the inside of the discharge hole, and communicates between the inside of the container body and the outside through the inside of the discharge hole when expanded. 2. Description of the Related Art Squeeze containers are known that include an elastically deformable discharge membrane and have a container main body that is elastically deformable.
In this squeeze container, when the body of the container body is elastically deformed inward in the radial direction, pressure is applied inside the container body, and the discharge membrane is elastically deformed and the slit expands. The contents within the container body are discharged through the slit.

Japanese Patent Application Publication No. 10-236498

However, if the container body is made to be lighter and thinner due to environmental considerations, for example, the body will be difficult to recover and deform in a short period of time, and there is a risk that the liquid will drain easily after dispensing the contents. There is.

The present invention has been made in consideration of such circumstances, and an object of the present invention is to provide a squeeze container that can ensure liquid drainage after discharging the contents even if the container body is made thin. .

In order to solve the above-mentioned problems and achieve such objects, the squeeze container of the present invention includes a container body in which the contents are stored, a container body that is attached to the mouth of the container body, and a squeeze container that allows the contents to be discharged. a discharge cap having a discharge hole formed therein, the discharge cap blocking communication between the inside of the container body and the outside through the inside of the discharge hole, and the discharge cap having a discharge hole formed inside the discharge hole when expanded. The container body includes an elastically deformable discharge membrane in which a slit is formed to communicate between the inside of the container body and the outside, and the body of the container body has a pair of short side portions and a pair of long side portions when viewed from the axial direction of the container. A panel portion is formed in the long side portion and is recessed toward the inside in the radial direction, and the bottom surface of the panel portion is recessed toward the outside in the radial direction when viewed from the axial direction of the container. It has a bulging curved shape and is formed to be elastically deformable, and the radius of curvature of the bottom surface of the panel section when viewed from the axial direction of the container is larger than 44 mm and smaller than 66 mm.

According to this invention, the bottom surface of the panel portion has a curved shape bulging outward in the radial direction when viewed from the axial direction of the container, and is formed to be elastically deformable, and the bottom surface of the panel portion when viewed from the axial direction of the container The radius of curvature of the bottom surface is larger than 44 mm and smaller than 66 mm. Therefore, when the bottom surface of the panel section is pressed inward in the short axis direction where a pair of long sides face each other, the bottom surface of the panel section is reversely deformed so as to bulge inward in the radial direction. This makes it possible to prevent the bottom surface of the panel from restoring deformation after the pressure is released, and also allows the bottom of the panel to be restored and deformed in a short time when the pressure is released, making it possible to make the container body thinner. Also, it is possible to ensure liquid drainage after discharging the contents.
In other words, if the radius of curvature of the bottom surface of the panel section as viewed from the container axis direction is 44 mm or less, when the bottom surface of the panel section is pressed inward in the minor axis direction, the bottom surface of the panel section will turn inward in the radial direction. If the radius of curvature exceeds 66 mm, the restoring force generated when the above-mentioned pressure is released becomes small, and the bottom surface of the panel cannot be restored and deformed in a short time.

A reinforcing recess that is recessed toward the inner side in the radial direction may be formed in the short side portion.

In this case, since the reinforcing recessed portion is formed in the short side portion, which is concave toward the inside in the radial direction, the short side portion, which tends to be stretched and thinned during blow molding, is able to extend the bottom surface of the panel portion in the short axis direction. When pressed inward, buckling in the minor axis direction can be suppressed.

The reinforcing recessed portion may be provided in a portion of the short side portion located inside in the axial direction of the container from both end edges of the panel portion in the axial direction of the container.

In this case, since the reinforcing recess is provided in the short side part of the panel part located inside in the container axial direction from both edges in the container axial direction, the bottom surface of the panel part is directed inward in the short axis direction. It is possible to reliably prevent the short side portions from buckling in the short axis direction when pressed.

The bottom surface of the panel portion may be located on the inner side in the radial direction of the opening peripheral portion of the panel portion on the outer circumferential surface of the body portion.

In this case, the bottom surface of the panel section is located radially inward from the opening periphery of the panel section on the outer peripheral surface of the body section, and excessive bulge of the bottom surface of the panel section toward the outside in the radial direction is suppressed. Therefore, when the bottom surface of the panel section is pressed inward in the minor axis direction, it is possible to reliably suppress the bottom surface of the panel section from being reversely deformed inward in the radial direction.

When viewed from the long axis direction in which the pair of short side portions face each other, an upper portion of the bottom surface of the panel portion located on the mouth side of the container body has a curved shape bulging outward in the radial direction. The radius of curvature of the upper part may be smaller than the radius of curvature of the lower part located on the bottom side of the container main body.

In this case, when viewed from the long axis direction, the upper part of the bottom surface of the panel section has a curved shape that bulges outward in the radial direction, and the radius of curvature of the upper part is smaller than the radius of curvature of the lower part. Therefore, it is possible to increase the restoring force that occurs when the above-mentioned pressure is released on the upper part of the bottom surface of the panel part, which is close to the mouth part where the content is filled when the content is discharged. Dripping can be effectively suppressed.
Viewed from the major axis direction, the radius of curvature at the bottom of the panel section is larger than the radius of curvature at the top, so when the bottom surface of the panel section is pressed inward in the minor axis direction, the panel It is possible to reliably suppress the reverse deformation of the bottom surface of the portion toward the inside in the radial direction.

According to the present invention, even if the container main body is made thin, liquid drainability after discharging the contents can be ensured.

FIG. 1 is a side view of a squeeze container shown as an embodiment of the present invention, viewed from the short axis direction. BRIEF DESCRIPTION OF THE DRAWINGS It is a side view of the squeeze container shown as one Embodiment based on this invention seen from the longitudinal direction. 2 is a sectional view taken along the line III-III in FIG. 1. FIG. FIG. 2 is an enlarged view of the discharge cap shown in FIG. 1. FIG.

EMBODIMENT OF THE INVENTION Hereinafter, with reference to drawings, the squeeze container 1 based on one Embodiment of this invention is demonstrated.
As shown in FIGS. 1 and 2, the squeeze container 1 includes a container body 10 in which the contents are accommodated, and a discharge cap 20.

The container body 10 according to the present embodiment has a mouth portion 11, a body portion 12, 13, and a bottom portion 14, which are arranged in this order from above to below along the direction of the container axis O, and are made of synthetic resin material. It is formed in one piece. The container body 10 is, for example, a blow container formed by extrusion blow molding or the like.

The container body 10 is made of, for example, high-density polyethylene or polypropylene. In the illustrated example, the container body 10 is made of polypropylene. The wall thickness of the body parts 12 and 13 is, for example, 0.3 mm or more and 1.0 mm or less. The internal capacity (full filling capacity) of the container body 10 is, for example, 150 ml or more and 550 ml or less.
In the illustrated example, the size of the body parts 12 and 13 in the direction of the container axis O is approximately 147 mm. The content of the container body 10 is approximately 275 ml. The weight of the container body 10 is approximately 18 g.

The mouth portion 11 is formed into a cylindrical shape. The shape of each of the body parts 12, 13 and the bottom part 14 in plan view when viewed from the direction of the container axis O is a flat shape having a pair of short side parts 15 and a pair of long side parts 16. That is, the body parts 12, 13 and the bottom part 14 have a flat shape having a short axis O1 and a long axis O2 that are perpendicular to each other on the container axis O, when viewed in a cross section perpendicular to the container axis O. The mouth portion 11, the body portions 12, 13, and the bottom portion 14 are each arranged coaxially with the container axis O.
Hereinafter, when viewed from the container axis O direction, the direction in which the pair of long side portions 16 face each other is referred to as the short axis O1 direction, and the direction in which the pair of short side portions 15 oppose each other is referred to as the long axis O2 direction. The direction that intersects O is called the radial direction, and the direction that goes around the container axis O is called the circumferential direction.

The outer peripheral surface of the mouth portion 11 is formed with a male threaded portion into which a cap (not shown) is removably screwed.
The body parts 12 and 13 include an upper body part 12 extending downward from the lower edge of the mouth part 11 and a lower body part 13 extending downward from the lower edge of the upper body part 12, and are elastically deformable. is formed.
The diameter of the upper body portion 12 increases from the upper side toward the lower side. The upper body portion 12 is formed in a curved shape that bulges outward in the radial direction. In the upper body portion 12, the radius of curvature when viewed from the direction of the short axis O1 is smaller than the radius of curvature when viewed from the direction of the long axis O2.
The lower body portion 13 extends straight in the container axis O direction over its entire length in the container axis O direction. The size of the lower body part 13 in the direction of the container axis O is smaller than the size of the upper body part 12 in the direction of the container axis O.
The bottom portion 14 is formed into a cylindrical shape with a bottom.

The lower body part 13, the upper body part 12, and the bottom part 14 are continuous in the direction of the container axis O without any difference in level. In each of the upper body part 12, the lower body part 13, and the bottom part 14, the long side part 16 and the short side part 15 have a curved shape that bulges outward in the radial direction when viewed from the container axis O direction. In each of the upper body part 12, the lower body part 13, and the bottom part 14, the radius of curvature of the long side part 16 is larger than the radius of curvature of the short side part 15 when viewed from the direction of the container axis O.

As shown in FIG. 4, the discharge cap 20 includes a cap body 22, a discharge membrane 23, a support 24, and a lid 25.

The cap body 22 is formed into a capped cylinder shape having an annular top wall and a peripheral wall. The opening 11 of the container body 10 is mounted within the peripheral wall of the cap body 22. A capped cylindrical discharge tube 26 is formed at the opening periphery of the top wall of the cap body 22, protruding upward and having an annular top wall and a peripheral wall. The inside of the top wall of the discharge tube 26 is a discharge hole 27 that can communicate with the inside of the container body 10 and through which the contents are discharged.

The discharge film 23 is formed into a thin disk shape and is elastically deformable. A slit 23a is formed in the discharge membrane 23 to block communication between the inside of the container body 10 through the inside of the discharge hole 27 and the outside, and to communicate between the inside of the container body 10 and the outside through the inside of the discharge hole 27 when expanded. has been done. The discharge film 23 is provided inside the discharge hole 27 . Note that the discharge film 23 may be provided above the discharge holes 27 or may be provided below the discharge holes 27. The discharge film 23 is curved downward in a convex manner.
A leg cylinder portion 23b that projects downward is provided on the outer peripheral edge of the discharge membrane 23. The lower part of the leg cylinder part 23b is thicker in the radial direction than the upper part. The lower portion of the leg cylinder portion 23b projects outward in the radial direction than the upper portion. The lower part of the leg cylinder part 23b is inserted into the peripheral wall of the discharge cylinder 26.

The support body 24 supports the discharge film 23 from below. The support body 24 is formed in an annular shape and is fitted inside the top wall of the cap body 22. The upper surface of the support body 24 and the lower surface of the top wall of the discharge cylinder 26 sandwich and fix the lower part of the leg cylinder part 23b in the direction of the container axis O.

The lid body 25 is formed in the shape of a capped cylinder having a top wall and a peripheral wall, and releasably closes the discharge hole 27 and the discharge membrane 23. The lid body 25 is connected to the cap body 22 via a hinge portion 28. A protrusion 25a is formed on the lower surface of the top wall of the lid 25. The protrusion 25a is inserted into the slit 23a while expanding the slit 23a by pushing the discharge film 23 downward.

In this embodiment, a panel portion 17 that is recessed toward the inside in the radial direction is formed in the long side portion 16 of the body portions 12 and 13.
The front view shape of the panel portion 17 viewed from the direction of the short axis O1 is a rectangular shape with a pair of sides extending in the direction of the container axis O and the remaining pair of sides extending in the direction of the long axis O2. Note that the front view shape of the panel portion 17 may be, for example, circular. In the illustrated example, the front view shape of the panel portion 17 is a rectangular shape that is long in the direction of the container axis O.

The panel portion 17 is provided integrally with the upper body portion 12 and the lower body portion 13. The panel portion 17 is integrally provided between the upper end portion of the upper body portion 12 and the lower end portion of the lower body portion 13. The upper edge 17a of the panel portion 17 has an upwardly curved shape when viewed from the short axis O1 direction. When viewed from the short axis O1 direction, both end edges 17c of the panel portion 17 in the long axis O2 direction extend along both end edges of the body portions 12 and 13 in the long axis O2 direction. As shown in FIG. 2, both end edges 17c of the panel portion 17 in the long axis O2 direction are provided at positions where the short side portions 15 are visible in a front view when viewed from the long axis O2 direction.

As shown in FIG. 3, the bottom surface 18 of the panel portion 17 has a curved shape that bulges outward in the radial direction when viewed from the direction of the container axis O, and is formed to be elastically deformable in the radial direction. There is. The radius of curvature R1 of the bottom surface 18 of the panel portion 17 when viewed from the direction of the container axis O is larger than 44 mm and smaller than 66 mm. In the illustrated example, the radius of curvature R1 is approximately 47 mm. The radius of curvature R1 is smaller than the size of the panel portion 17 in the long axis O2 direction.

The bottom surface 18 of the panel portion 17 has a single arc shape when viewed from the direction of the container axis O. The radius of curvature R1 of the bottom surface 18 of the panel portion 17 when viewed from the container axis O direction is the same over the entire area in the container axis O direction.
In addition, as the bottom surface 18 of the panel part 17, for example, a plurality of circular arcs that differ from each other in a range in which the radius of curvature R1 viewed from the container axis O direction is larger than 44 mm and smaller than 66 mm are connected in the long axis O2 direction or in the container axis O direction. You may also adopt a configuration etc.

As shown in FIGS. 2 and 3, the bottom surface 18 of the panel portion 17 is located radially inward from the opening periphery of the panel portion 17 on the outer peripheral surface of the body portions 12 and 13. The depression amount d1 of the bottom surface 18 of the panel portion 17 from the outer circumferential surface of the body portions 12 and 13 is the same over the entire area. The amount of depression d1 is 1.5 mm or more and 4.0 mm or less. In the illustrated example, the depression amount d1 is approximately 2.0 mm.

As shown in FIG. 2, when viewed from the long axis O2 direction, of the bottom surface 18 of the panel portion 17, the upper portion 18a located on the mouth portion 11 side of the container body 10 along the container axis O direction is located on the outside in the radial direction. The upper portion 18a has a curved shape bulging toward the upper portion 18a, and the radius of curvature R2 of the upper portion 18a is smaller than the radius of curvature of the lower portion 18b located on the bottom 14 side of the container body 10 along the container axis O direction. The radius of curvature R2 of the upper part 18a viewed from the direction of the long axis O2 is larger than the radius of curvature R1 of the bottom surface 18 of the panel portion 17 when viewed from the direction of the container axis O.

In the illustrated example, the lower portion 18b of the bottom surface 18 of the panel portion 17 extends straight in the direction of the container axis O when viewed from the long axis O2 direction. Of the bottom surface 18 of the panel portion 17, the entire lower portion 18b is provided on the lower body portion 13, and the entire upper portion 18a is provided on the upper body portion 12.
Note that the lower portion 18b of the bottom surface 18 of the panel portion 17 may be formed to have a curved shape that bulges outward in the radial direction when viewed from the long axis O2 direction. The upper portion 18a of the bottom surface 18 of the panel portion 17 may extend straight in the direction of the container axis O when viewed from the long axis O2 direction. The bottom surface 18 of the panel portion 17 may extend straight in the container axis O direction over the entire length in the container axis O direction when viewed from the long axis O2 direction, or may have a curved shape bulging outward in the radial direction. It may be formed as follows.

A reinforcing recess 19 is formed in the short side portion 15 of the body portions 12 and 13, and is recessed toward the inside in the radial direction. The reinforcing recess 19 is provided in a portion of the short side portion 15 of the body portions 12 and 13 that is located inside the upper edge 17a and lower edge 17b of the panel portion 17 in the direction of the container axis O.

The opening area of the reinforcing recess 19 on the outer circumferential surface of the body parts 12 and 13 is smaller than the opening area of the panel part 17 on the outer circumferential surface of the body parts 12 and 13. A plurality of reinforcing recesses 19 are provided in the short side portions 15 of the bodies 12 and 13 at intervals in the direction of the container axis O. As shown in FIG. 2, the reinforcing recess 19 has a rectangular shape that is long in the short axis O1 direction when viewed from the long axis O2 direction. The edge of the reinforcing recess 19 in the direction of the short axis O1 is spaced apart from the edge 17c of the panel portion 17 in the direction of the long axis O2 in the circumferential direction. The interval in the circumferential direction between the edge of the reinforcing recess 19 in the short axis O1 direction and the edge 17c of the panel part 17 in the long axis O2 direction is determined by the size of the reinforcing recess 19 in the short axis O1 direction and the container. It is smaller than the interval between reinforcing recesses 19 adjacent to each other in the axis O direction. As shown in FIG. 1, both ends of the reinforcing recess 19 in the short axis O1 direction are provided at positions that are visible when the long side portion 16 is viewed from the front when viewed from the short axis O1 direction.

As shown in FIG. 3, the bottom surface of the reinforcing recess 19 has a curved shape that bulges outward in the radial direction when viewed from the container axis O direction.
The bottom surface of the reinforcing recess 19 is located radially inward from the opening periphery of the reinforcing recess 19 on the outer circumferential surfaces of the trunks 12 and 13. A depression amount d2 of the bottom surface of the reinforcing recess 19 from the outer circumferential surface of the body parts 12 and 13 is shallower than a depression amount d1 of the bottom surface 18 of the panel part 17 from the outer circumferential surface of the body parts 12 and 13. In the illustrated example, the depression amount d2 is approximately 1.5 mm.

As described above, according to the squeeze container 1 according to the present embodiment, the bottom surface 18 of the panel portion 17 has a curved shape that bulges outward in the radial direction when viewed from the direction of the container axis O, and has elasticity. It is formed to be deformable, and the radius of curvature R1 of the bottom surface 18 of the panel portion 17 when viewed from the direction of the container axis O is larger than 44 mm and smaller than 66 mm.
Therefore, when the bottom surface 18 of the panel section 17 is pressed inward in the short axis O1 direction, the bottom surface 18 of the panel section 17 is reversely deformed so as to bulge inward in the radial direction, and the pressure is removed. This makes it possible to prevent the bottom surface 18 of the panel portion 17 from being deformed again after release, and when the pressure is released, the bottom surface 18 of the panel portion 17 can be restored and deformed in a short time. , it is possible to ensure liquid drainage after discharging the contents.

That is, when the radius of curvature R1 of the bottom surface 18 of the panel portion 17 as viewed from the container axis O direction becomes 44 mm or less, when the bottom surface 18 of the panel portion 17 is pressed inward in the short axis O1 direction, the curvature radius R1 of the panel portion 17 There is a possibility that the bottom surface 18 is reversely deformed radially inward, and if this radius of curvature R1 becomes 66 mm or more, the restoring force generated when the above-mentioned pressure is released becomes small, causing the bottom surface 18 of the panel portion 17 to shorten. It cannot be restored and transformed over time.

Since the short side portion 15 is formed with a reinforcing recess 19 that is concave toward the inside in the radial direction, the short side portion 15, which tends to be stretched and thinned during blow molding, is aligned with the bottom surface 18 of the panel portion 17 as the short axis. When pressed inward in the O1 direction, buckling in the short axis O1 direction can be suppressed.

Since the reinforcing recess 19 is provided in the short side portion 15 at a portion located inside in the container axis O direction from both end edges 17a and 17b of the panel portion 17 in the container axis O direction, the bottom surface 18 of the panel portion 17 is When pressed inward in the direction of the short axis O1, it is possible to reliably prevent the short side portion 15 from buckling in the direction of the short axis O1.

The bottom surface 18 of the panel section 17 is located radially inward from the opening periphery of the panel section 17 on the outer peripheral surface of the body sections 12 and 13, and excessive expansion of the bottom surface 18 of the panel section 17 toward the outside in the radial direction occurs. Since the protrusion is suppressed, when the bottom surface 18 of the panel section 17 is pressed inward in the short axis O1 direction, the bottom surface 18 of the panel section 17 is surely prevented from being reversely deformed toward the inside in the radial direction. It can be suppressed.

When viewed from the long axis O2 direction, the upper portion 18a of the bottom surface 18 of the panel portion 17 has a curved shape bulging outward in the radial direction, and the radius of curvature R2 of the upper portion 18a is equal to the radius of curvature of the lower portion 18b. Since it is smaller, the restoring force generated when the above-mentioned pressure is released is applied to the upper part 18a of the bottom surface 18 of the panel part 17, which is close to the mouth part 11 that is filled with the contents when the contents are discharged. This makes it possible to increase the amount of water and effectively suppress dripping.
The radius of curvature of the lower part 18b of the bottom surface 18 of the panel part 17 is larger than the radius of curvature R2 of the upper part 18a when viewed from the direction of the long axis O2. It is possible to reliably prevent the bottom surface 18 of the panel portion 17 from being reversely deformed inward in the radial direction when the panel portion 17 is pressed.

The present invention is not limited to the embodiments described above, and can be modified as appropriate without departing from the spirit thereof.

The synthetic resin material forming the container body 10 may be changed as appropriate, such as polyethylene terephthalate, polyethylene naphthalate, amorphous polyester, or a blend thereof.
The container main body 10 is not limited to a single layer structure, but may be a laminated structure having an intermediate layer. Examples of this intermediate layer include a layer made of a resin material having gas barrier properties, a layer made of a recycled material, a layer made of a resin material having oxygen absorption properties, a combination of these layers, a vapor deposited layer, and the like.

In addition, without departing from the spirit of the present invention, the components in the embodiments described above may be replaced with well-known components, and the embodiments and modified examples may be combined as appropriate.

1 Squeeze container 10 Container main body 11 Mouth part 12 Body part, upper body part 13 Body part, lower body part 15 Short side part 16 Long side part 17 Panel part 17a Upper edge 17b Lower edge 18 Bottom surface 18a Upper part 18b Lower part 19 Reinforcement recessed part 20 Discharge cap 23 Discharge membrane 23a Slit 27 Discharge hole O Container shaft

Claims (4)

A container body in which the contents are stored;
a discharge cap that is attached to the mouth of the container body and has a discharge hole through which the contents are discharged;
The discharge cap blocks communication between the inside of the container body through the inside of the discharge hole and the outside, and is formed with a slit that communicates between the inside of the container body and the outside through the inside of the discharge hole when expanded. Equipped with an elastically deformable discharge membrane,
The body of the container body has a flat shape having a pair of short side portions and a pair of long side portions when viewed from the axial direction of the container,
A panel portion recessed toward the inside in the radial direction is formed in the long side portion,
The bottom surface of the panel portion has a curved shape bulging outward in the radial direction when viewed from the container axis direction, and is formed to be elastically deformable,
The radius of curvature of the bottom surface of the panel section viewed from the axial direction of the container is larger than 44 mm and smaller than 66 mm,
When viewed from the long axis direction in which the pair of short side portions face each other, an upper portion of the bottom surface of the panel portion located on the mouth side of the container body has a curved shape bulging outward in the radial direction. and the radius of curvature of the upper part is smaller than the radius of curvature of the lower part located on the bottom side of the container body,
In the squeeze container , the bottom surface of the panel portion is constituted by one surface . The squeeze container according to claim 1, wherein a reinforcing recess that is recessed toward the inside in the radial direction is formed in the short side portion. The squeeze container according to claim 2, wherein the reinforcing recess is provided in a portion of the short side portion located inside in the axial direction of the container from both end edges of the panel portion in the axial direction of the container. The squeeze container according to any one of claims 1 to 3, wherein the bottom surface of the panel portion is located radially inward from the opening peripheral portion of the panel portion on the outer peripheral surface of the body portion.

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