JP2021160758A - Thin-walled container - Google Patents

Abstract

To provide a thin-walled container ready to be crushed into a stable shape when disposed.SOLUTION: A thin-walled container 10 in the present invention comprises a mouth 11, a shoulder 12, a belly 13 and a bottom 14. The belly 13 exhibits a flat shape having long and short axes intersecting with each other on an axis C in a plan view as seen vertically and has a front wall portion 18 and a back wall portion 19 that are opposed to each other in a short axis direction and each have a curved outer peripheral surface and a crook 20 connecting the front wall portion 18 and the back wall portion 19 together at both ends in a long axis direction. The shoulder 12 has a shoulder inclination face 22 extending downward as going distant from the axis, and has such a shape that the spacing in the short axis direction between a first connection where an outer peripheral surface of the front wall portion 18 and the shoulder inclination face 22 border and a second connection where an outer peripheral surface of the back wall portion 19 and the shoulder inclination face 22 border becomes gradually shorter as going from top to bottom as viewed in the long axis direction.SELECTED DRAWING: Figure 2

Description

The present invention relates to a thin-walled container.

Thin-walled container with a tubular mouth and a body that is connected to the mouth to form a storage space for the contents as a container for storing various contents such as foods, cosmetics, and chemicals. Containers are conventionally known. For example, in Patent Document 1 below, bent portions extending in the axial direction are provided at the widthwise ends on both sides of the body portion, and when the body portion is crushed in the thickness direction, the bent portions are formed on the front wall portion and the front wall portion. A synthetic resin container configured so that one of the back wall portions serves as a starting point when the back wall portion is inverted and deformed toward the other is disclosed.

JP-A-2018-203296

However, in the container of Patent Document 1, when the container is crushed and discarded, it may be crushed into various shapes in some cases, and it may be difficult to dispose of the container compactly.

One aspect of the present invention has been made to solve the above problems, and one object of the present invention is to provide a thin-walled container that can be easily crushed into a stable shape at the time of disposal.

In order to achieve the above object, the thin-walled container according to one aspect of the present invention can be deformed into a tubular mouth portion, a shoulder portion connected below the mouth portion, and a shoulder portion below the shoulder portion. A body portion that is continuously provided to form a storage space for the contents and a bottom portion that is continuously provided below the body portion are provided. A front wall portion and a back wall portion each having a flat shape having a long axis and a short axis intersecting each other on the axis, facing each other in the short axis direction along the short axis, and each having a curved outer peripheral surface. It has a bent portion that connects the front wall portion and the back wall portion at both ends in the long axis direction along the long axis, and the shoulder portion is separated from the axis along the long axis direction. It has a shoulder inclined surface that extends downward according to the above, and when viewed from the long axis direction, the first connecting portion in which the outer peripheral surface of the front wall portion and the shoulder inclined surface are in contact with each other, and the outer periphery of the back wall portion. The distance between the surface and the second connecting portion in contact with the inclined surface of the shoulder portion in the minor axis direction has a shape in which the distance gradually decreases from the upper side to the lower side.

In one aspect of the present invention, since the body portion has a flat shape, the container is pressed by pressing the body portion in a direction in which the front wall portion and the back wall portion approach each other along the minor axis direction. Can be crushed. Here, the shoulder portion has a shoulder inclined surface that extends downward as it is separated from the axis along the long axis direction, and the outer peripheral surface of the front wall portion and the shoulder inclined surface are in contact with each other when viewed from the long axis direction. It has a shape in which the distance between the 1 connection portion and the second connection portion where the outer peripheral surface of the back wall portion and the inclined surface of the shoulder portion are in contact with each other along the minor axis direction gradually shortens from the upper side to the lower side. The shoulder portion having such a configuration does not hinder the collapse of the torso at a position away from the shoulder, while exerts a drag against the collapse of the torso in the vicinity of the shoulder, so that the shoulder portion is greatly deformed in the minor axis direction. Will not occur. That is, when an external force is applied to the body in the minor axis direction, the front wall and the back wall are greatly deformed and the central part in the height direction of the body is crushed, while the shoulder itself is The shape before applying an external force can be generally maintained while being displaced as the body is crushed. This makes it possible to provide a thin-walled container that can be easily crushed into a stable shape at the time of disposal.

Further, according to the thin-walled container of one aspect of the present invention, when the remaining amount of the contents is low, it becomes easy to perform the operation of discharging the contents while supporting the shoulder portion, and the remaining amount of the contents can be reduced. Can be reduced. Further, since the shoulder portion has a predetermined rigidity, it is possible to support the container by the shoulder portion, for example, when the container is discharged in an inverted state.

In the thin-walled container of one aspect of the present invention, each of the front wall portion and the back wall portion is along the outer peripheral surface at substantially the same height as the lower end of the shoulder inclined surface when viewed from the minor axis direction. It may have an upper bent groove portion extending in the long axis direction.

According to this configuration, the body portion of the container can be stably bent at the position where the upper bent groove portion is formed. As a result, the overall shape when the container is crushed can be kept substantially constant.

In the thin-walled container of one aspect of the present invention, the bottom portion has a bottom inclined surface that extends upward as it moves away from the axis along the major axis direction, and the front wall when viewed from the major axis direction. The distance between the third connecting portion in which the outer peripheral surface of the portion and the inclined surface of the bottom contact and the fourth connecting portion in contact with the outer peripheral surface of the back wall portion and the inclined surface of the bottom in the minor axis direction is from below. It may have a shape that gradually shortens upward.

According to this configuration, as with the shoulder portion described above, the bottom portion does not hinder the crushing of the torso, while the bottom inclined surface of the bottom exerts a drag against the crushing of the torso, resulting in a large deformation in the minor axis direction. It never happens. That is, when an external force is applied to the body in the minor axis direction, the front wall and the back wall are greatly deformed and the central part in the height direction of the body is crushed, while the bottom itself is the body. The shape before applying an external force can be maintained while being displaced due to crushing. This makes it possible to provide a container that can be easily crushed into a stable shape at the time of disposal.

In the thin-walled container of one aspect of the present invention, each of the front wall portion and the back wall portion is along the outer peripheral surface at substantially the same height as the upper end of the bottom inclined surface when viewed from the minor axis direction. It may have a lower bent groove portion extending in the long axis direction.

According to this configuration, the body of the container can be stably bent at the position where the lower bending groove is formed. As a result, the overall shape when the container is crushed can be kept substantially constant.

In the thin-walled container of one aspect of the present invention, the ratio of the average wall thickness of the shoulder portion to the average wall thickness of the body portion may be 150% or more and 300% or less.

According to this configuration, for example, the drag force of the shoulder against the crushing of the body can be increased as compared with the case where the wall thickness of the shoulder is equal to the wall thickness of the body, so that the shape when the container is crushed can be improved. Can be stabilized. Further, when the remaining amount of the contents is low, the operation of supporting the shoulder portion and discharging the contents becomes easier, and the remaining amount of the contents can be further reduced. Further, since the rigidity of the shoulder portion is increased, the container can be supported more stably by the shoulder portion when the container is discharged in an inverted state or the like.

According to one aspect of the present invention, it is possible to provide a thin-walled container that can be easily crushed into a stable shape at the time of disposal.

It is a front view of the thin-walled container of one Embodiment of this invention. It is a side view of a thin-walled container. It is a top view of a thin-walled container. It is a bottom view of a thin-walled container. It is a side view which shows the state which crushed the thin-walled container.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 5.
The two-dot chain line in FIGS. 3 and 4 shows the outer shape when the body is crushed.

As shown in FIGS. 1 to 3, the thin-walled container 10 of the present embodiment is connected to a tubular mouth portion 11, a shoulder portion 12 connected below the mouth portion 11, and a shoulder portion 12 below the shoulder portion 12. The body portion 13 is provided, and the bottom portion 14 is continuously provided below the body portion 13. Since the thin-walled container 10 of the present embodiment is formed to be thin-walled, the contents can be discharged by squeeze.

The thin-walled container 10 can be manufactured by extrusion blow molding using a tubular parison made of, for example, an olefin-based synthetic resin such as polypropylene or polyethylene, or a synthetic resin such as polyethylene terephthalate. Therefore, the mouth portion 11, the shoulder portion 12, the body portion 13, and the bottom portion 14 described above are integrally formed on the central axis of each portion by the synthetic resin material described above. Hereinafter, the central axis in which the mouth portion 11, the shoulder portion 12, the body portion 13, and the bottom portion 14 are continuously provided in this order from the top to the bottom is referred to as an axis C. The method for producing the thin-walled container 10 is not limited to the above method, and a blow molding method other than extrusion blow molding may be used, and various production methods can be adopted.

The mouth portion 11 is formed in a cylindrical shape, and a male screw 16 for attaching a cap or the like (not shown) is provided on the outer peripheral surface 11a. The upper end opening 11b of the mouth portion 11 functions as a discharge port for discharging the contents.

As shown in FIG. 3, the body portion 13 is a flat cylinder having a long axis L1 and a short axis L2 that intersect each other on the axis in a plan view seen from the vertical direction, that is, the axis C direction along the axis C. It presents a condition. The body portion 13 is formed so as to be elastically deformable, and has a storage space S for the contents inside. Hereinafter, the direction along the axis C is referred to as the axis C direction, the direction along the major axis L1 is referred to as the major axis L1 direction, and the direction along the minor axis L2 is referred to as the minor axis L2 direction. Further, the dimension of the body portion 13 in the major axis L1 direction may be referred to as a width, and the dimension of the body portion 13 in the minor axis L2 direction may be referred to as a thickness.

As shown in FIGS. 1 and 2, the body portion 13 has a front wall portion 18, a back wall portion 19, and a bent portion 20. The front wall portion 18 and the back wall portion 19 face each other in the minor axis L2 direction, and each has curved outer peripheral surfaces 18a and 19a. The bent portion 20 connects the front wall portion 18 and the back wall portion 19 at both ends in the long axis L1 direction, and extends in the axis C direction.

As shown in FIG. 3, in the body portion 13, the front wall portion 18 and the back wall portion 19 have the same shape and are arranged so as to face each other, and are symmetrical with respect to a plane passing through the axis C and the major axis L1. It has a shape. Further, the body portion 13 has a shape symmetrical with respect to a plane passing through the axis C and the minor axis L2. That is, the body portion 13 has a shape symmetrical with respect to the axis C in the front-rear direction and the left-right direction. As a result, the body portion 13 can be easily crushed evenly in the front-rear direction and the left-right direction. The body portion 13 may have an asymmetrical shape in at least one of the front-rear direction and the left-right direction.

In a plan view seen from the axis C direction, the tangent line F1 to the front wall portion 18 with the apex P of the bent portion 20 as the base point and the tangent line F2 to the back wall portion 19 with the apex P of the bent portion 20 as the base point are formed. The angle θ is preferably in the range of 70 ° to 140 °. When the angle θ formed by the tangent line F1 and the tangent line F2 is smaller than 70 °, it becomes difficult to form the shoulder portion while maintaining the rigidity. Further, the flatness of the body portion 13 is preferably in the range of 1.2 to 1.8. The flatness of the body portion 13 is a value indicated by the ratio of the maximum width W of the body portion 13 to the maximum thickness T of the body portion 13. That is, the flatness is indicated by W / T. When the above numerical range is satisfied, the front wall portion 18 and the back wall portion 19 can be easily crushed in the minor axis L2 direction without any trouble.

The shoulder portion 12 is connected to the mouth portion 11 and the body portion 13. As shown in FIG. 1, the shoulder portion 12 has a shoulder portion inclined surface 22 extending downward as it is separated from the axis C along the long axis L1 direction. Further, as shown in FIG. 2, the connecting portion formed by the ridge line where the outer peripheral surface 18a of the front wall portion 18 and the shoulder inclined surface 22 are in contact with each other when viewed from the long axis L1 direction is referred to as a first connecting portion R1 and is referred to as a back wall. The connecting portion formed by the ridge line in which the outer peripheral surface 19a of the portion 19 and the shoulder portion inclined surface 22 are in contact with each other is referred to as the second connecting portion R2, and the connecting portion formed by the ridge line in which the upper surface 12a of the shoulder portion 12 and the shoulder portion inclined surface 22 are in contact with each other is referred to as a second connecting portion R2. Speaking of the upper connection portion RA, the shoulder inclined surface 22 surrounded by the first connection portion R1, the second connection portion R2, and the upper connection portion RA has the first connection portion R1 and the second connection portion R2, respectively. It has a substantially isosceles triangular shape that slightly bulges downward. That is, the distance D1 between the first connecting portion R1 and the second connecting portion R2 in the minor axis L2 direction has a shape that gradually shortens from the upper side to the lower side. Further, when viewed from the long axis L1 direction, the shoulder inclined surface 22 is curved with a central portion having a slightly downward convex shape.

Each of the front wall portion 18 and the back wall portion 19 has an upper bent groove portion 24 extending in the major axis L1 direction along the outer peripheral surfaces 18a and 19a at substantially the same height as the lower end of the shoulder inclined surface 22. There is. The upper bent groove portion 24 is composed of a groove portion recessed from the outer peripheral surface side to the inner peripheral surface side of each of the wall portions 18 and 19. The position of the upper bent groove portion 24 in the height direction may not completely coincide with the position of the lower end of the shoulder inclined surface 22 in the height direction, or may be slightly deviated.

As shown in FIG. 1, the bottom portion 14 has a bottom inclined surface 26 extending upward as it is separated from the axis C along the long axis L1 direction. Further, as shown in FIG. 2, the connecting portion formed by the ridge line where the outer peripheral surface 18a of the front wall portion 18 and the bottom inclined surface 26 are in contact with each other when viewed from the long axis L1 direction is referred to as a third connecting portion R3, and the back wall portion. The connecting portion formed by the ridge line where the outer peripheral surface 19a of 19 and the bottom inclined surface 26 are in contact with each other is referred to as a fourth connecting portion R4, and the connecting portion formed by the ridge line where the ground contact surface 14b and the bottom inclined surface 26 are in contact with each other is referred to as a lower connecting portion RB. Then, the bottom inclined surface 26 surrounded by the third connection portion R3, the fourth connection portion R4, and the lower connection portion RB, each of the third connection portion R3 and the fourth connection portion R4 slightly bulges upward. It has a substantially isosceles triangle shape. That is, the distance D2 between the third connecting portion R3 and the fourth connecting portion R4 in the minor axis L2 direction has a shape that gradually shortens from the lower side to the upper side. Further, the bottom inclined surface 26 is formed in an area smaller than that of the shoulder inclined surface 22.

Each of the front wall portion 18 and the back wall portion 19 has a lower bent groove portion 28 extending in the major axis L1 direction along the outer peripheral surfaces 18a and 19a at substantially the same height as the upper end of the bottom inclined surface 26. There is. The lower bent groove portion 28 is composed of a groove portion recessed from the outer peripheral surface side to the inner peripheral surface side of each of the wall portions 18 and 19. The position of the lower bent groove portion 28 in the height direction does not have to completely coincide with the position of the upper end of the bottom inclined surface 26 in the height direction, and may be slightly deviated.

As shown in FIG. 4, the bottom portion 14 has a ground contact portion 30 having a ground contact surface 14b, a bottom raising portion 31 formed recessed inside the ground contact portion 30, and a rib 32 extending in the longitudinal direction. There is.

In the case of the present embodiment, the average wall thickness of the shoulder portion 12 is thicker than the average wall thickness of the body portion 13. As an example of specific numerical values, the wall thickness of the body 13 is 0.2 mm or more and 0.4 mm or less, the wall thickness of the shoulder 12 is thicker than 0.4 mm and 0.7 mm or less, and then the body. It is desirable that the ratio of the average wall thickness of the shoulder portion 12 to the average wall thickness of the portion 13 is 150% or more and 300% or less. By setting the wall thickness of the body portion 13 in the above range, the volume of the container can be easily reduced, and by setting the wall thickness of the shoulder portion 12 in the above range, appropriate rigidity can be obtained. Further, by setting the ratio of the average wall thickness of the shoulder portion 12 to the average wall thickness of the body portion 13 within the above range, the wall thickness difference between the body portion 13 and the shoulder portion 12 can be appropriately maintained, and stable formability can be achieved. can get. Further, the wall thickness of the bottom portion 14 is 0.2 mm or more and 0.4 mm or less, similarly to the body portion 13. More specifically, in the present embodiment, the wall thickness of the shoulder portion 12 is 0.42 mm, the wall thickness of the body portion 13 is 0.23 mm, and the wall thickness of the bottom portion 14 is 0.27 mm. The ratio of the average wall thickness of the shoulder portion 12 to the average wall thickness of the body portion 13 is 182.6%.

Since the thin-walled container 10 having the above configuration has a flat body, when the thin-walled container 10 is used, the front wall portion 18 and the back wall portion 19 are oriented in the minor axis L2 direction, that is, the body portion 13. The contents can be discharged from the upper end opening 11b of the mouth portion 11 by sandwiching the body portion 13 from the front-rear direction and crushing the body portion 13 in the thickness direction.

In the conventional thin-walled container, when the shoulder inclined surface and the bottom inclined surface as in the present embodiment are not provided, even if the thin-walled container is crushed at the time of disposal, it is difficult to crush it into a thin and well-organized shape. It may be crushed into various shapes depending on the degree of crushing. Further, it is difficult to crush the front wall portion and the back wall portion so as to be substantially flat, and the remaining amount of the contents may increase.

On the other hand, in the thin-walled container 10 of the present embodiment, the shoulder portion 12 has a shoulder portion inclined surface 22 extending downward as it moves away from the axis C along the major axis L1 direction, and is viewed from the major axis L1 direction. A short portion of a first connecting portion R1 in which the outer peripheral surface 18a of the front wall portion 18 and the shoulder inclined surface 22 are in contact with each other, and a second connecting portion R2 in which the outer peripheral surface 19a of the back wall portion 19 and the shoulder inclined surface 22 are in contact with each other. It has a shape in which the interval D1 in the axis L2 direction gradually shortens from the upper side to the lower side. The shoulder portion 12 having such a configuration does not hinder the collapse of the body portion 13 in the thickness direction, while the shoulder portion 12 itself exerts a drag against the collapse of the body portion 13 in the thickness direction. There is no major deformation to.

That is, by applying an external force to the body portion 13 in the minor axis L2 direction, as shown in FIG. 5, the front wall portion 18 and the back wall portion 19 are greatly deformed, and the center of the body portion 13 in the height direction. The body portion 13 can be crushed so as to be substantially flat from the portion to the upper portion close to the shoulder portion 12. Further, in the case of the present embodiment, the bottom portion 14 also has a bottom inclined surface 26 extending upward as it moves away from the axis C along the major axis L1 direction, and the bottom inclined surface 26 has a third connection. The distance D2 between the portion R3 and the fourth connecting portion R4 in the minor axis L2 direction is gradually shortened from the lower side to the upper side. Therefore, the bottom portion 14 also has the same function as the shoulder portion 12, and the body portion 13 can be crushed so as to be substantially flat from the central portion in the height direction of the body portion 13 to the lower portion near the bottom portion 14. ..

As described above, in the present embodiment, most of the body portion 13 can be crushed substantially flat from the upper part to the lower part. Therefore, it is possible to provide a thin-walled container 10 that has a thin shape and is stable and easy to crush. As a result, the used thin-walled container 10 can be efficiently and compactly disposed of.

Further, according to the present embodiment, since the shoulder portion 12 has a certain degree of rigidity, when the remaining amount of the contents is low, for example, the shoulder portion 12 is supported by the index finger and the body portion 13 is supported by the thumb. It becomes easier to perform the operation of pushing the contents to the 12 side and discharging the contents. In particular, in the case of the present embodiment, since the central portion of the shoulder inclined surface 22 is curved downward in a convex shape when viewed from the long axis L1 direction, when the volume of the thin container 10 is reduced to reduce the contents, The index finger can be placed on the downwardly curved portion to facilitate support. As a result, the remaining amount of the contents can be reduced and the contents can be fully used up. Further, by improving the rigidity of the shoulder portion 12, for example, when the thin-walled container 10 is in an inverted state and the contents are to be discharged, the thin-walled container 10 can be supported by the shoulder portion 12.

Here, the relationship between the dimensions of each portion that easily crushes the body portion 13 flat will be described below.
As shown in FIG. 3, the dimension from the axis C in the state where the body portion 13 is crushed to the apex P of the bent portion 20 is f1, and the circumference of the body portion 13 in the state where the body portion 13 is crushed is f2. From the point Q (the center of each wall portion 18, 19) where each wall portion 18, 19 and the minor axis L2 intersect when the front wall portion 18 and the back wall portion 19 are viewed in a plan view to the apex P of the bent portion 20. The arc length of is c1, the dimension from the axis C to the outer peripheral surface of the mouth portion 11 is a1, and the dimension from the outer peripheral surface of the mouth portion 11 to the apex P of the bent portion 20 in the state where the body portion 13 is crushed is a2. As shown in FIG. 2, when the lengths of the first connecting portion R1 and the second connecting portion R2 are a3, if the following equations (1) and (2) are satisfied, as shown in FIG. In addition, the upper part of the body portion 13 can be crushed flat when viewed from the long axis L1 direction.
f1 = c1 = a1 + a2 ... (1)
f2 = a3 ... (2)

As for the bottom portion 14, as shown in FIG. 4, the dimension from the axis C to the end of the ground contact surface 14b in the long axis L1 direction is b1, and the body portion 13 is pushed from the end of the ground contact surface 14b in the long axis L1 direction. The dimension to the apex of the bent portion 20 in the crushed state is b2, and the point Q (each wall) where the wall portions 18, 19 and the minor axis L2 intersect when the front wall portion 18 and the back wall portion 19 are viewed in a plan view. When the arc length from the center of the portions 18 and 19) to the end of the ground plane 14b is b4 and the lengths of the third connection portion R3 and the fourth connection portion R4 are b3 as shown in FIG. 2, the following If the equations (3) and (4) are satisfied, the lower portion of the body portion 13 can be crushed flat when viewed from the long axis L1 direction, as shown in FIG.
f1 = c1 = b1 + b2 ... (3)
f2 = b3 + b4 ... (4)

In the present embodiment, each of the front wall portion 18 and the back wall portion 19 has an upper bent groove portion extending in the major axis L1 direction along the outer peripheral surfaces 18a and 19a at substantially the same height as the lower end of the shoulder inclined surface 22. Since the 24 is provided, as shown in FIG. 5, the body portion 13 can be stably bent at the formation position of the upper bent groove portion 24. Further, each of the front wall portion 18 and the back wall portion 19 is provided with a lower bent groove portion 28 extending in the major axis L1 direction along the outer peripheral surfaces 18a and 19a at substantially the same height as the upper end of the bottom inclined surface 26. Therefore, the body portion 13 can be stably bent at the formation position of the lower bent groove portion 28. As a result, the shape of the thin-walled container 10 when crushed can always be kept substantially constant.

Further, in the present embodiment, the ratio of the average wall thickness of the shoulder portion 12 to the average wall thickness of the body portion 13 is 150% or more and 300% or less, so that the wall thickness of the shoulder portion 12 is the thickness of the body portion 13. Compared to the case where the thickness is equal to the thickness, the rigidity of the shoulder portion 12 is further improved, and the resistance force of the shoulder portion 12 against the collapse of the body portion 13 can be increased. Therefore, the shape of the thin-walled container 10 when crushed can be made more stable. Further, by further improving the rigidity of the shoulder portion 12, the above operation of pushing the body portion 13 when the remaining amount of the contents is low becomes easier to perform. As a result, the remaining amount of the contents can be reduced and the contents can be fully used up.

The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.
In the above embodiment, an example of the thin-walled container 10 for discharging the contents by squeeze is given, but the present invention is not limited to this type of container, and is applied to a container for discharging the contents by a dispenser such as a pump or the like. May be good. A pump may be provided at the mouth portion, and the present invention may be applied to, for example, a container in which the container is discharged in an inverted state. In the case of a container equipped with this type of pump, the pump can be finally removed to reduce the remaining amount, and the contents can be discharged while reducing the volume of the container.

Further, the container of the present invention may be supported and used in an inverted state. When the mouth is supported and used in an inverted state, for example, the mouth may be supported by two rod-shaped support portions extending in parallel with the mouth protruding downward from the rod-shaped support portion, or the thumb and index finger may be used. A form in which it is supported by a portion between the two fingers (the first finger gap) may be adopted. When the container is supported between the thumb and the index finger, the contents may be discharged while using, for example, a pump. As the pump, a simple pump can also be used. In the case of the present invention, the rigidity of the shoulder portion 12 is improved, so that when the container is to be used in an inverted state as described above, the shoulder portion can support the container more stably.

For example, in the above embodiment, the thin-walled container 10 including the shoulder inclined surface 22, the bottom inclined surface 26, the upper bent groove portion 24, and the lower bent groove portion 28 is illustrated. The inclined surface 26, the upper bent groove portion 24, and the lower bent groove portion 28 do not necessarily have to be provided. Further, the upper bent groove portion 24 and the lower bent groove portion 28 do not necessarily have to be composed of one continuous groove portion as in the above embodiment, and a plurality of groove portions or a plurality of recesses interrupted in the middle. It may be composed of.

In addition, the dimensions, wall thickness, shape, arrangement, and the like of various components of the container can be appropriately changed without being limited to the above embodiment.

10 Thin-walled container 11 Mouth 12 Shoulder 13 Body 14 Bottom 18 Front wall 18a Outer surface 19 Back wall 19a Outer surface 20 Bend 22 Shoulder slope 24 Upper bend groove 26 Bottom slope 28 Lower bend Groove C Axis D1 Interval D2 Interval L1 Long Axis L2 Short Axis R1 1st Ridge R2 2nd Ridge R3 3rd Ridge R4 4th Ridge S Containment Space

Claims (5)

Cylindrical mouth and
The shoulders that are connected below the mouth and
A body portion that is deformably connected below the shoulder portion to form a storage space for the contents, and a body portion.
The bottom, which is connected to the bottom of the body,
With
The body has a flat shape having a long axis and a short axis that intersect each other on the axis of the body in a plan view seen from the vertical direction.
A front wall portion and a back wall portion facing each other in the minor axis direction along the minor axis and each having a curved outer peripheral surface,
It has a bent portion that connects the front wall portion and the back wall portion at both ends in the long axis direction along the long axis.
The shoulder portion has a shoulder portion inclined surface that extends downward as the distance from the axis line along the long axis direction, and the outer peripheral surface of the front wall portion and the shoulder portion inclined when viewed from the long axis direction. The distance between the first connecting portion in contact with the surface and the second connecting portion in contact with the outer peripheral surface of the back wall portion and the inclined surface of the shoulder portion in the minor axis direction gradually decreases from the upper side to the lower side. A thin-walled container with a shape. According to claim 1, each of the front wall portion and the back wall portion has an upper bent groove portion extending in the major axis direction along the outer peripheral surface at substantially the same height as the lower end of the shoulder inclined surface. The thin-walled container described. The bottom portion has a bottom inclined surface that extends upward as it is separated from the axis along the long axis direction, and the outer peripheral surface of the front wall portion and the bottom inclined surface are formed when viewed from the long axis direction. The third connecting portion in contact with the outer peripheral surface of the back wall portion and the fourth connecting portion in contact with the inclined surface of the bottom have a shape in which the distance in the minor axis direction gradually decreases from the lower side to the upper side. The thin-walled container according to claim 1 or 2. According to claim 3, each of the front wall portion and the back wall portion has a lower bent groove portion extending in the major axis direction along the outer peripheral surface at substantially the same height as the upper end of the bottom inclined surface. The thin-walled container described. The thin-walled container according to any one of claims 1 to 4, wherein the ratio of the average wall thickness of the shoulder portion to the average wall thickness of the body portion is 150% or more and 300% or less.

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