JP2021133983A - Squeeze container - Google Patents

Abstract

To provide a squeeze container capable of securing a liquid dripping property of a content after discharge even when a container body is reduced in a wall thickness.SOLUTION: The squeeze container includes a container body 10 and a discharge cap 20; the discharge cap blocks communication between an inside and an outside of the container body through an inside of a discharging hole 27 and includes an elastically deformable discharge film 23 in which a slit 23a for communicating the inside and the outside of the container body through the inside of the discharging hole in opening is formed; body parts 12, 13 of the container body assume a flat shape having a pair of short side parts 15 and a pair of long side parts 16 viewing from a container axis O direction, and a panel part 17 recessed to an inside in a radial direction is formed on a long side part; a bottom surface 18 of the panel part assumes a curved shape swelling toward an outside in a radial direction viewing from the container axis direction and is formed so as to be elastically deformable, and a curvature radius of a bottom face of the panel part viewing from the container axis direction is lager than 44 mm and smaller than 66 mm.SELECTED DRAWING: Figure 1

Description

The present invention relates to a squeeze container.

Conventionally, for example, as shown in Patent Document 1 below, a container body in which the contents are housed and a discharge cap which is attached to the mouth of the container body and has a discharge hole for discharging the contents. The discharge cap has a slit that blocks communication between the inside and the outside of the container body through the inside of the discharge hole and communicates between the inside and the outside of the container body through the inside of the discharge hole at the time of expansion. A squeeze container having an elastically deformable discharge film and having a body of the container body formed so as to be elastically deformable is known.
In this squeeze container, when the body of the container body is elastically deformed inward in the radial direction, the inside of the container body is pressurized, so that the discharge membrane is elastically deformed and the slit is widened. The contents in the container body are discharged through the slit.

Japanese Unexamined Patent Publication No. 10-236498

However, for example, if the weight of the container body is reduced and the thickness of the container body is reduced in consideration of the environment, the body portion is less likely to be restored and deformed in a short time, and the liquid drainage property after discharging the contents may be deteriorated. 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 capable of ensuring liquid drainage after discharging the contents even if the container body is thin. ..

In order to solve the above problems and achieve such an object, the squeeze container of the present invention is attached to the container body in which the contents are housed and the mouth of the container body, and the contents are discharged. A discharge cap having a discharge hole formed therein is provided, and the discharge cap blocks communication between the inside of the container body and the outside through the inside of the discharge hole, and at the time of expansion, the inside of the discharge hole. The container body is provided with an elastically deformable discharge film having a slit that communicates the inside and the outside of the container body through the container body, and the body portion of the container body has a pair of short side portions and a pair of long sides when viewed from the container axial direction. It has a flat shape having a portion, and a panel portion that is recessed inward in the radial direction is formed on the long side portion, and the bottom surface of the panel portion is directed outward in the radial direction when viewed from the container axial direction. It has a bulging curved shape and is formed so as to be elastically deformable, and the radius of curvature of the bottom surface of the panel portion when viewed from the container axial direction is larger than 44 mm and smaller than 66 mm.

According to the present invention, the bottom surface of the panel portion has a curved shape that bulges outward in the radial direction when viewed from the container axial direction, and is formed so as to be elastically deformable, so that the panel portion is formed when viewed from the container axial direction. The radius of curvature of the bottom surface of the is larger than 44 mm and smaller than 66 mm. Therefore, when the bottom surface of the panel portion is pressed inward in the short axis direction in which the pair of long side portions face each other, the bottom surface of the panel portion is inverted and deformed so as to bulge inward in the radial direction. It is possible to prevent the container from being restored and deformed after the pressure is released, and when the pressure is released, the bottom surface of the panel can be restored and deformed in a short time, making the container body thinner. However, the liquid drainage property after discharging the contents can be ensured.
That is, when the radius of curvature of the bottom surface of the panel portion viewed from the container axis direction is 44 mm or less, when the bottom surface of the panel portion is pressed inward in the minor axis direction, the bottom surface of the panel portion faces inward in the radial direction. If the radius of curvature is 66 mm or more, the restoring force generated when the above-mentioned pressing is released becomes small, and the bottom surface of the panel portion cannot be restored and deformed in a short time.

Reinforcing recesses that are recessed inward in the radial direction may be formed in the short side portion.

In this case, since the short side portion is formed with a reinforcing recess that is recessed inward in the radial direction, the short side portion that tends to be stretched and thinned during blow molding makes the bottom surface of the panel portion in the minor axis direction. When pressed inward, buckling in the minor axis direction can be suppressed.

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

In this case, since the reinforcing recesses are provided on the short side portion in the portion of the panel portion located inside the container axial direction from both end edges in the container axial direction, the bottom surface of the panel portion faces inward in the short axial direction. It is possible to reliably prevent the short side portion from buckling in the short axis direction when pressed.

The bottom surface of the panel portion may be located radially inside the opening peripheral edge portion of the panel portion on the outer peripheral surface of the body portion.

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

When viewed from the long axis direction in which the pair of short side portions face each other, the upper portion of the bottom surface of the panel portion located on the mouth side of the container body has a curved shape that bulges 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 body.

In this case, when viewed from the long axis direction, the upper part of the bottom surface of the panel portion has a curved shape that bulges outward in the radial direction, and the radius of curvature of the upper part becomes smaller than the radius of curvature of the lower part. Therefore, it is possible to increase the restoring force generated when the above-mentioned pressing is released on the upper part of the bottom surface of the panel portion near the mouth portion where the contents are filled when the contents are discharged. Dripping can be effectively suppressed.
When viewed from the long axis direction, the radius of curvature of the lower part of the bottom surface of the panel part is larger than the radius of curvature of the upper part, so when the bottom surface of the panel part is pressed inward in the minor axis direction, the panel It is possible to surely prevent the bottom surface of the portion from being inverted and deformed inward in the radial direction.

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

It is a side view which looked at the squeeze container shown as one Embodiment which concerns on this invention from the minor axis direction. It is a side view which looked at the squeeze container shown as one Embodiment which concerns on this invention from the long axis direction. FIG. 3 is a cross-sectional view taken along the line III-III of FIG. It is an enlarged view of the discharge cap shown in FIG.

Hereinafter, the squeeze container 1 according to the embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the squeeze container 1 includes a container body 10 for accommodating the contents and a discharge cap 20.

In the container body 10 according to the present embodiment, the mouth portion 11, the body portions 12, 13 and the bottom portion 14 are continuously provided in this order from above to below along the container axis O direction, and are made of a synthetic resin material. It is formed integrally. 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, polypropylene, or the like. In the illustrated example, the container body 10 is made of polypropylene. The wall thicknesses of the body portions 12 and 13 are, for example, 0.3 mm or more and 1.0 mm or less. The content (full injection 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 portions 12 and 13 in the container axis O direction is about 147 mm. The content of the container body 10 is about 275 ml. The weight of the container body 10 is about 18 g.

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

On the outer peripheral surface of the mouth portion 11, a male screw portion to which a cap (not shown) is detachably screwed is formed.
The body portions 12 and 13 include an upper body portion 12 extending downward from the lower end edge of the mouth portion 11 and a lower body portion 13 extending downward from the lower end edge of the upper body portion 12, and are elastically deformable. Is formed in.
The diameter of the upper body portion 12 increases from the upper side to the lower side. The upper body portion 12 is formed in a curved surface shape that bulges outward in the radial direction. In the upper body portion 12, the radius of curvature seen from the short axis O1 direction is smaller than the radius of curvature seen from the long axis O2 direction.
The lower body portion 13 extends straight in the container shaft O direction over the entire length in the container shaft O direction. The size of the lower body portion 13 in the container shaft O direction is smaller than the size of the upper body portion 12 in the container shaft O direction.
The bottom portion 14 is formed in a bottomed tubular shape.

The lower body portion 13, the upper body portion 12, and the bottom portion 14 are connected to each other in the container axis O direction without a step. In each of the upper body portion 12, the lower body portion 13, and the bottom portion 14, the long side portion 16 and the short side portion 15 exhibit a curved shape that bulges outward in the radial direction when viewed from the container axis O direction. In each of the upper body portion 12, the lower body portion 13, and the bottom portion 14, the radius of curvature of the long side portion 16 is larger than the radius of curvature of the short side portion 15 when viewed from the container axis O direction.

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

The cap body 22 is formed in an eclipsed tubular shape having an annular top wall and a peripheral wall. The mouth portion 11 of the container body 10 is mounted in the peripheral wall of the cap body 22. At the peripheral edge of the opening of the top wall of the cap body 22, an eclipsed tubular discharge cylinder 26 that protrudes upward and has an annular top wall and a peripheral wall is formed. The inside of the top wall of the discharge cylinder 26 is a discharge hole 27 that can communicate with the inside of the container body 10 and discharge the contents.

The discharge membrane 23 is formed in the shape of a thin disk and is elastically deformable. The discharge membrane 23 is formed with a slit 23a that blocks communication between the inside and the outside of the container body 10 that passes through the inside of the discharge hole 27 and communicates between the inside and the outside of the container body 10 through the inside of the discharge hole 27 at the time of expansion. Has been done. The discharge film 23 is provided inside the discharge hole 27. The discharge film 23 may be provided above the discharge hole 27, or may be provided below the discharge hole 27. The discharge membrane 23 is curved so as to project downward.
A leg tube portion 23b that projects downward is provided on the outer peripheral edge portion of the discharge film 23. Of the leg tube portion 23b, the lower portion is thicker in the radial direction than the upper portion. The lower part of the leg tube portion 23b protrudes outward in the radial direction from the upper part. The lower portion of the leg cylinder portion 23b is inserted into the peripheral wall of the discharge cylinder 26.

The support body 24 supports the discharge film 23 from below the discharge film 23. The support 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 are fixed by sandwiching the lower portion of the leg cylinder portion 23b in the container axis O direction.

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

Then, in the present embodiment, a panel portion 17 that is recessed inward in the radial direction is formed on the long side portions 16 of the body portions 12 and 13.
The front view shape of the panel portion 17 seen from the short axis O1 direction is a rectangular shape in which a pair of sides extend in the container axis O direction and the remaining pair of sides extend in the long axis O2 direction. The front view shape of the panel portion 17 may be, for example, a circular shape. In the illustrated example, the front view shape of the panel portion 17 is a rectangular shape that is long in the container axis O direction.

The panel portion 17 is integrally provided on 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 end edge 17a of the panel portion 17 exhibits a protruding curved shape upward when viewed from the minor axis O1 direction. When viewed from the minor axis O1 direction, both end edges 17c of the panel portion 17 in the major axis O2 direction extend along both end edges of the body portions 12 and 13 in the major axis O2 direction. As shown in FIG. 2, both end edges 17c of the panel portion 17 in the major axis O2 direction are provided at positions that can be visually recognized from the front view of the short side portion 15 viewed from the major 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 container axis O direction, and is formed so as 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 container axis O direction is larger than 44 mm and smaller than 66 mm. In the illustrated example, the radius of curvature R1 is about 47 mm. The radius of curvature R1 is smaller than the size of the panel portion 17 in the major axis O2 direction.

The bottom surface 18 of the panel portion 17 exhibits a single arc shape when viewed from the container axis O direction. The radius of curvature R1 of the bottom surface 18 of the panel portion 17 seen from the container axis O direction is the same over the entire area in the container axis O direction.
As the bottom surface 18 of the panel portion 17, for example, a plurality of arcs different from each other in a range in which the radius of curvature R1 seen 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 the container axis O direction. The configured configuration or the like may be adopted.

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

As shown in FIG. 2, of the bottom surface 18 of the panel portion 17 when viewed from the long axis O2 direction, the upper portion 18a located on the mouth 11 side of the container body 10 along the container axis O direction is outside in the radial direction. 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 direction of the container axis O. The radius of curvature R2 of the upper portion 18a viewed from the direction of the major axis O2 is larger than the radius of curvature R1 of the bottom surface 18 of the panel portion 17 viewed from the direction of the container axis O2.

In the illustrated example, the lower portion 18b of the bottom surface 18 of the panel portion 17 extends straight in the container axis O direction 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.
The lower portion 18b of the bottom surface 18 of the panel portion 17 may be formed so as to exhibit 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 container axis O direction 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 exhibits a curved shape bulging outward in the radial direction. It may be formed as follows.

Reinforcing recesses 19 that are recessed inward in the radial direction are formed on the short side portions 15 of the body portions 12 and 13. The reinforcing recess 19 is provided in the short side portion 15 of the body portions 12 and 13 at a portion of the panel portion 17 located inside the upper end edge 17a and the lower end edge 17b in the container axis O direction.

The opening area of the reinforcing recesses 19 on the outer peripheral surfaces of the body portions 12 and 13 is smaller than the opening area of the panel portion 17 on the outer peripheral surfaces of the body portions 12 and 13. A plurality of reinforcing recesses 19 are provided on the short side portions 15 of the body portions 12 and 13 at intervals in the container axis O direction. As shown in FIG. 2, the reinforcing recess 19 exhibits a long rectangular shape in the short axis O1 direction when viewed from the long axis O2 direction. The edge of the reinforcing recess 19 in the minor axis O1 direction is separated from the edge 17c of the panel portion 17 in the major axis O2 direction in the circumferential direction. The circumferential distance between the edge of the reinforcing recess 19 in the minor axis O1 direction and the edge of the panel portion 17 in the major axis O2 direction is the size of the reinforcing recess 19 in the minor axis O1 direction and the container. It is smaller than the distance between the reinforcing recesses 19 adjacent to each other in the axis O direction. As shown in FIG. 1, both end edges of the reinforcing recess 19 in the short axis O1 direction are provided at positions that can be visually recognized from the front view of the long side portion 16 seen from the short axis O1 direction.

As shown in FIG. 3, the bottom surface of the reinforcing recess 19 exhibits 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 inside the opening peripheral edge of the reinforcing recess 19 on the outer peripheral surfaces of the body portions 12 and 13. The amount d2 of the bottom surface of the reinforcing recess 19 from the outer peripheral surfaces of the body portions 12 and 13 is shallower than the amount of depression d1 of the bottom surface 18 of the panel portion 17 from the outer peripheral surfaces of the body portions 12 and 13. In the illustrated example, the dent amount d2 is about 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 exhibits a curved shape that bulges outward in the radial direction when viewed from the container axis O direction, and is elastic. It is deformably formed, and the radius of curvature R1 of the bottom surface 18 of the panel portion 17 when viewed from the container axis O direction is larger than 44 mm and smaller than 66 mm.
Therefore, when the bottom surface 18 of the panel portion 17 is pressed inward in the minor axis O1 direction, the bottom surface 18 of the panel portion 17 is inverted and deformed so as to bulge inward in the radial direction and pressed. It is possible to prevent the container body 10 from being restored and deformed after the release, and when the pressing is released, the bottom surface 18 of the panel portion 17 can be restored and deformed in a short time, and even if the container body 10 is thinned. , It is possible to secure the liquid drainage property after discharging the contents.

That is, when the radius of curvature R1 of the bottom surface 18 of the panel portion 17 viewed from the container axis O direction is 44 mm or less, when the bottom surface 18 of the panel portion 17 is pressed inward in the minor axis O1 direction, the panel portion 17 The bottom surface 18 may be inverted and deformed inward in the radial direction, and when the radius of curvature R1 is 66 mm or more, the restoring force generated when the above-mentioned pressing is released becomes small, and the bottom surface 18 of the panel portion 17 is shortened. It cannot be restored and transformed in time.

Since the short side portion 15 is formed with a reinforcing recess 19 that is recessed inward in the radial direction, the short side portion 15 that tends to be stretched and thinned during blow molding has a short axis on the bottom surface 18 of the panel portion 17. 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 of the panel portion 17 located inside the container shaft O direction from both end edges 17a and 17b in the container shaft O direction, the bottom surface 18 of the panel portion 17 can be formed. When pressed inward in the short axis O1 direction, the short side portion 15 can be reliably suppressed from buckling in the short axis O1 direction.

The bottom surface 18 of the panel portion 17 is located radially inside the opening peripheral edge portion of the panel portion 17 on the outer peripheral surfaces of the body portions 12 and 13, and excessive swelling toward the outside in the radial direction of the bottom surface 18 of the panel portion 17. Since the protrusion is suppressed, when the bottom surface 18 of the panel portion 17 is pressed inward in the minor axis O1 direction, the bottom surface 18 of the panel portion 17 is surely inverted and deformed inward in the radial direction. It can be suppressed.

When viewed from the major axis O2 direction, the upper portion 18a of the bottom surface 18 of the panel portion 17 exhibits a curved shape that bulges outward in the radial direction, and the radius of curvature R2 of the upper portion 18a is the radius of curvature of the lower portion 18b. Since it is smaller, the restoring force generated when the above-mentioned pressing is released on the upper portion 18a of the bottom surface 18 of the panel portion 17 near the mouth portion 11 filled with the contents when the contents are discharged. Can be increased, and dripping can be effectively suppressed.
When viewed from the major axis O2 direction, the radius of curvature of the lower portion 18b of the bottom surface 18 of the panel portion 17 is larger than the radius of curvature R2 of the upper portion 18a, so that the bottom surface 18 of the panel portion 17 is inside the minor axis O1 direction. It is possible to reliably prevent the bottom surface 18 of the panel portion 17 from being inverted and deformed inward in the radial direction when pressed toward.

The present invention is not limited to the above-described embodiment, and can be appropriately modified without departing from the spirit of the present invention.

The synthetic resin material forming the container body 10 may be appropriately changed, for example, polyethylene terephthalate, polyethylene naphthalate, amorphous polyester, or a blend material thereof.
The container body 10 is not limited to a single-layer structure, but may be a laminated structure having an intermediate layer. Examples of the intermediate layer include a layer made of a resin material having a gas barrier property, a layer made of a recycled material, a layer made of a resin material having an oxygen absorption property, a combination of these layers, a vapor deposition layer and the like.

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

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

Claims (5)

The container body that houses the contents and
It is provided with a discharge cap which is attached to the mouth of the container body and has a discharge hole for discharging the contents.
The discharge cap blocks communication between the inside of the container body and the outside through the inside of the discharge hole, and is formed with a slit that communicates between the inside and the outside of the container body through the inside of the discharge hole at the time of expansion. 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 container axial direction.
A panel portion that is recessed inward in the radial direction is formed on the long side portion.
The bottom surface of the panel portion has a curved shape that bulges outward in the radial direction when viewed from the container axial direction, and is formed so as to be elastically deformable.
A squeeze container in which the radius of curvature of the bottom surface of the panel portion viewed from the container axial direction is larger than 44 mm and smaller than 66 mm. The squeeze container according to claim 1, wherein a reinforcing recess that is recessed inward in the radial direction is formed on the short side portion. The squeeze container according to claim 2, wherein the reinforcing recess is provided in a portion of the panel portion located inside the container axial direction from both end edges in the container axial direction in the short side portion. The squeeze container according to any one of claims 1 to 3, wherein the bottom surface of the panel portion is located inside in the radial direction from the opening peripheral edge portion of the panel portion on the outer peripheral surface of the body portion. When viewed from the long axis direction in which the pair of short side portions face each other, the upper portion of the bottom surface of the panel portion located on the mouth side of the container body has a curved shape that bulges outward in the radial direction. The squeeze container according to any one of claims 1 to 4, wherein 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.

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