JP7364419B2 - container - Google Patents

Description

The present invention relates to containers.

Patent Document 1 discloses that annular body-side end joints formed by bending inward are formed at both upper and lower ends of a body member, and the outer peripheries of the upper and lower closing members are joined to the upper and lower body-side end joints, respectively. A pouch container is disclosed in which both upper and lower ends of a body member are closed with upper and lower closing members.
Patent Document 2 discloses a self-supporting pouch in which a lower end opening of a body made of a cylindrical film material is closed with a bottom part made of a film material, and an upper end joint is formed by joining the film material at the upper end of the body. The container is listed.

Japanese Patent Application Publication No. 2015-20787 JP2016-55911A

In the cylindrical container as described in Patent Document 1, there is a problem that when the internal pressure decreases due to removal of contents, etc., the body collapses and the appearance becomes unsightly.
In a container with a joined top end, such as the one described in Patent Document 2, the body is originally collapsed, so even if the internal pressure decreases, the appearance is less likely to be impaired, but because the top end is thinner, the container has a smaller capacity. There's a problem.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a container that does not impair the aesthetic appearance even if the internal pressure decreases and can secure a sufficient capacity.

In order to solve the above problems, the present invention provides a flexible cylindrical member formed into a cylindrical shape from a rectangular flat member, a top member joined to the upper end of the cylindrical member, and a top surface member joined to the upper end of the cylindrical member. a bottom member joined to a lower end of the member, an outer peripheral portion of the top member where the top member contacts the upper end of the cylindrical member; and a bottom member joined to the lower end of the cylindrical member. The outer periphery of the bottom member that is in contact with the outer periphery of the bottom member does not overlap except for a finite number of intersections in a plan view of vertically overlapping, and the circumferential length of the outer periphery of the top member and the bottom member are To provide a container characterized in that the circumferential length of the outer circumferential part is equal.

The container may be configured such that the top member and the bottom member are made of a hard molded product.
Further, the container may have a structure in which at least one of the top member and the bottom member has a portion that can be elastically deformed according to the internal pressure of the container.

According to the present invention, it is possible to provide a container that does not lose its aesthetic appearance even if the internal pressure decreases, and can secure a sufficient capacity.

It is a perspective view illustrating a container of a 1st embodiment. FIG. 2 is a developed view illustrating the container of the first embodiment. It is a top view which illustrates the container of 2nd Embodiment. It is a top view which illustrates the container of 3rd Embodiment.

Hereinafter, the present invention will be described based on preferred embodiments and with reference to the drawings.

1 and 2 illustrate the container of the first embodiment. This container 10 includes a top member 11, a cylindrical member 12, and a bottom member 13. The top member 11 is joined to the upper end 12a of the cylindrical member 12. The cylindrical member 12 is formed into a cylindrical shape from a rectangular flat member. The bottom member 13 is joined to the lower end 12b of the cylindrical member 12. The container 10 can be constructed from three parts, each consisting of a top member 11, a cylindrical member 12, and a bottom member 13. In the following description, the top member 11 and the bottom member 13 may be collectively referred to as end members 11 and 13.

The container 10 is self-supporting. The self-supporting nature of the container 10 is at least the property that it can stand on its own when filled with contents and sealed. Furthermore, it is preferable that the container 10 without contents can stand on its own. Moreover, it is preferable that the cylindrical member 12 be able to stand on its own when separated from the end members 11 and 13. When the container 10 stands on its own, the top member 11 becomes the upper surface and the bottom member 13 becomes the lower surface. In the following explanation, the vertical direction will be explained based on a state in which the container 10 is free standing on a horizontal installation surface. Moreover, a planar view represents the positional relationship when specific parts of the container 10 are superimposed in the vertical direction.

The end members 11 and 13 may each be substantially planar, or at least one may be a three-dimensional molded product. At least one of the end members 11 and 13 may be made of a flexible film, sheet, laminate, or the like made of resin, paper, or the like. At least one of the end members 11 and 13 may be made of a hard molded product.

Although the planar shape of the end members 11 and 13 is not particularly limited, examples include circular, elliptical, and polygonal shapes. Examples of these planar polygons include triangles, quadrilaterals, pentagons, hexagons, heptagons, and octagons. These polygons may have rounded corners. The thickness of the end face members 11 and 13 is not particularly limited, but may be, for example, about 10 to 3000 μm or 50 to 1000 μm. The thickness of the top member 11 and the thickness of the bottom member 13 may be approximately the same or may be different from each other.

The molding method when the end members 11, 13 are formed from molded products is not particularly limited, but for example, in the case of resin, injection molding, compression molding, blow molding, extrusion molding, air pressure molding, drawing molding, etc. can be mentioned. Examples of molding materials for the end members 11 and 13 include thermoplastic resins, thermosetting resins, organic materials such as wood, inorganic materials such as metals, glass, and ceramics, and composite materials of two or more of these materials. It will be done. At least one of the end members 11 and 13 may have a portion that can be elastically deformed according to the internal pressure of the container 10. The elastically deformable portion may be made of rubber, elastomer, or the like. Thereby, volume changes due to pressure changes can be absorbed and wrinkles in the appearance can be suppressed.

The cylindrical member 12 is formed from a rectangular flat member into a flexible cylindrical shape. The rectangular flat member is rectangular (square or rectangular) in the unfolded state and is made of a film, sheet, laminate, etc. of resin, paper, or the like. The outer diameter of the cylindrical member 12 is not particularly limited, but may be, for example, about 20 to 200 mm. The thickness of the cylindrical member 12 is not particularly limited, but may be, for example, about 10 to 1000 μm, preferably about 30 to 700 μm, and more preferably about 50 to 600 μm. The thickness of the cylindrical member 12 may be approximately the same as the thickness of the end members 11, 13, may be thinner than the thickness of the end members 11, 13, or may be thicker than the thickness of the end members 11, 13. When welding the cylindrical member 12 to the end members 11 and 13, it is preferable that the thickness of the cylindrical member 12 be less than or equal to the thickness of the end members 11 and 13 because heating becomes easier.

The length of the upper end 12a of the cylindrical member 12 and the length of the lower end 12b of the cylindrical member 12 are equal to each other so that the expanded state of the cylindrical member 12 is rectangular. That is, the circumferential length of the outer circumferential portion 11a of the top member 11 and the circumferential length of the outer circumferential portion 13a of the bottom member 13 are equal to each other. The circumferential length of the outer peripheral parts 11a, 13a is the length along the periphery of the outer peripheral parts 11a, 13a.

The cylindrical member 12 may be substantially vertical or may be slightly inclined. When the cylindrical member 12 is substantially vertical, the center of the top member 11 may be located substantially above the center of the bottom member 13, for example. An example of the center of the end face members 11 and 13 is the center of gravity. In a plan view, it is preferable that the center of the top member 11 is within the range of the area surrounded by the outer peripheral portion 13a of the bottom member 13.

A spout 14 may be provided in at least one of the end members 11 and 13. The spout 14 may be omitted from the container 10. The spout 14 may have a narrow or wide mouth. The spout 14 may be integrally formed with the end members 11 and 13. The spout 14 may be formed as a separate member from the end members 11 and 13. Methods for forming the spout 14 include, but are not particularly limited to, injection molding, compression molding, blow molding, extrusion molding, air pressure molding, drawing molding, and the like. Examples of the molding material for the spout 14 include thermoplastic resin and metal.

The method of providing the lid on the spout 14 is not particularly limited, and examples include screws, adhesives, thin parts, and fitting. The lid of the spout 14 may be molded integrally with the spout 14. For example, the spout 14 and the lid may be integrally connected via a thin hinge. Further, the lid of the spout 14 may be constructed from a separate member from the spout 14. For example, a film-like lid may be welded to the tip of the spout 14, the cap may be fixed with a screw, or the cap may be fixed by fitting.

The end members 11 and 13 and the cylindrical member 12 each have an inner surface and an outer surface. The inner surface is the surface that comes into contact with the contents filled in the container 10. The outer surface is the surface opposite to the inner surface. At least one of the end members 11 and 13 or the cylindrical member 12 includes, for example, an inner sealant layer having a resin layer, a barrier layer having an aluminum foil or an aluminum vapor deposited layer, an outer sealant layer or a base material layer having a resin layer, etc. It may be constructed from a laminate including at least three layers.

Examples of the material constituting the sealant layer of the laminate include thermoplastic resin. Specific examples of sealant materials include polyolefin resins such as polyethylene (PE) and polypropylene (PP), polyester resins such as polyethylene terephthalate (PET), and cyclic resins such as cycloolefin polymers (COP) and cycloolefin copolymers (COC). Examples include at least one of olefin resins, adhesive resins, and coating agents. Examples of the material constituting the base layer of the laminate include nylon (aliphatic polyamide), polyester, and the like. In the laminate, a thermoplastic resin such as polyethylene may be laminated on the outside of the base layer.

To form a rectangular flat member into a cylindrical shape, one side of the flat member is made to correspond to the circumferential direction of the cylindrical member 12, and both ends 12c in the circumferential direction are joined. When the flat member is rectangular, either the long side or the short side may correspond to the circumferential direction of the cylindrical member 12. In order to join the circumferential ends 12c, the inner surfaces of the circumferential ends 12c may be opposed to each other and joined. Alternatively, the inner surface at one end 12c in the circumferential direction and the outer surface at the other end 12c may be overlapped and joined.

In order to join the outer peripheral parts 11a, 13a of the end members 11, 13 to the upper and lower ends 12a, 12b of the cylindrical member 12, the inner surfaces of the end members 11, 13 are joined so as to face the inner surface of the cylindrical member 12. Alternatively, the outer surfaces of the end members 11 and 13 may be joined so as to face the outer surface of the cylindrical member 12, or the outer surfaces of the end members 11 and 13 may be joined so as to face the inner surface of the cylindrical member 12. Alternatively, the inner surfaces of the end members 11 and 13 may be joined to the outer surface of the cylindrical member 12 so as to face each other. Here, the upper and lower ends 12a and 12b of the cylindrical member 12 refer to whichever of the upper end 12a and the lower end 12b corresponds to (closer to) the end members 11 and 13.

In joining the outer circumferential parts 11a, 13a of the end face members 11, 13 and the upper and lower ends 12a, 12b of the cylindrical member 12, , 12b may have a glue margin that overlaps the other. For example, when providing glue margins on the outer peripheries 11a, 13a of the end members 11, 13, the glue margins of the end members 11, 13 are bent and overlapped with the upper and lower ends 12a, 12b of the cylindrical member 12. , can be joined. In addition, when providing glue margins on the upper and lower ends 12a and 12b of the cylindrical member 12, the glue margins of the cylindrical member 12 are bent and overlapped with the outer peripheral parts 11a and 13a of the end members 11 and 13, Can be joined. Note that the manner in which the top member 11 and the cylindrical member 12 are joined may be the same as the manner in which the cylindrical member 12 and the bottom member 13 are joined, or may be different.

The outer periphery 11a of the top member 11 and the outer periphery 13a of the bottom member 13 do not overlap except at a finite number of intersections in a plan view where they overlap in the vertical direction. In the case of the first embodiment, the outer circumference 11a of the top member 11 is circular, and the outer circumference 13a of the bottom member 13 is square. When the center of the top member 11 and the center of the bottom member 13 are overlapped in the vertical direction, eight intersections occur between the outer circumferential parts 11a and 13a of the top member 11 and the bottom member 13 in a plan view.

In the container 10 of the first embodiment, the end members 11 and 13 had mutually different shapes, but the end members 11 and 13 may have the same shape. In the container 20 of the second embodiment and the container 30 of the third embodiment, the top members 21 and 31 and the bottom members 23 and 33 have the same shape. In addition, in the container 20 of the second embodiment and the container 30 of the third embodiment, contents other than the planar shapes of the top members 21, 31 and the bottom members 23, 33, such as the cylindrical members 22, 32, the spout 24, The configuration of the container 34 can be the same as that of the container 10 of the first embodiment, so a redundant explanation will be omitted.

For example, in the container 20 of the second embodiment shown in plan view in FIG. 3, the top member 21 and the bottom member 23 have the same elliptical shape. In this case, the long axis direction of the ellipse of the top member 21 overlaps with the short axis direction of the ellipse of the bottom member 23, and the short axis direction of the ellipse of the top member 21 overlaps the long axis direction of the ellipse of the bottom member 23. ing. Therefore, the outer peripheral part 21a of the top member 21 where the top member 21 contacts the upper end 22a of the cylindrical member 22, and the outer peripheral part 23a of the bottom member 23 where the bottom member 23 contacts the lower end 22b of the cylindrical member 22. However, in plan view, they do not overlap except at four intersections.

Further, in the container 30 of the third embodiment shown in plan view in FIG. 4, the shapes of the top member 31 and the bottom member 33 are the same square. In this case, each side of the square of the top member 31 is parallel or perpendicular to the diagonal of the square of the bottom member 33, and the diagonal of the square of the top member 31 is parallel or perpendicular to each side of the square of the bottom member 33. . Therefore, the outer peripheral part 31a of the top member 31 where the top member 31 contacts the upper end 32a of the cylindrical member 32, and the outer peripheral part 33a of the bottom member 33 where the bottom member 33 contacts the lower end 32b of the cylindrical member 32. However, in plan view, they do not overlap except at eight intersections.

According to the containers 10, 20, 30, the top members 11, 21, 31 and the bottom members 13, 23, 33 do not overlap, so the cylindrical members 12, 22, 32 have undulating shapes. Therefore, even if the internal pressure of the containers 10, 20, 30 decreases, the dents in the cylindrical members 12, 22, 32 become less noticeable, and the aesthetic appearance is less likely to be impaired. In addition, since the areas of the top members 11, 21, 31 and the areas of the bottom members 13, 23, 33 are approximately equal, the capacity of the containers 10, 20, 30 is equivalent to the area of the bottom and the height. can be ensured. The shape of the container is such that changes in the shape of the cylindrical member are difficult to discern, is highly eye-catching, and can be processed continuously in the same way as conventional symmetrical containers (when the top and bottom surfaces are the same shape). preferable.

Like the container 10 of the first embodiment, when one of the top member 11 and the bottom member 13 is circular and the other is square, and the circumferences of the top member 11 and the bottom member 13 are equal, the area of the circle is 1. The area of the square is π/4 (approximately 0.785), and the area of the circle is 4/π (approximately 1.273) when the area of the square is 1. Further, when the top members 21, 31 and the bottom members 23, 33 have the same shape as in the container 20 of the second embodiment and the container 30 of the third embodiment, their areas are equal to each other. The ratio (S ₁ /S ₂ ) of the area S ₁ of the top members 11, 21, 31 to the area S ₂ of the bottom members 13, 23, 33 is, for example, about 0.5 to 2.0.

Here, the area _S1 of the top surface members 11, 21, 31 does not include the glue margin for joining the upper ends 12a, 22a, 32a of the above-mentioned cylindrical members 12, 22, 32, This is the area of the region surrounded by the outer peripheral parts 11a, 21a, 31a of 11, 21, 31 in a plan view. Similarly, the area _S2 of the bottom members 13, 23, 33 does not include the glue margin for joining the lower ends 12b, 22b, 32b of the above-mentioned cylindrical members 12, 22, 32; This is the area of the region surrounded by the outer peripheral parts 13a, 23a, 33a of 23, 33 in plan view.

The area of the region (overlapping region) where the outer circumferential parts 11a, 21a, 31a of the top members 11, 21, 31 and the outer circumferential parts 13a, 23a, 33a of the bottom members 13, 23, 33 overlap in plan view is S _B , When the area of a region where these do not overlap (non-overlapping region) is defined as S _A , the area of the non-overlapping region S _A can be calculated using the formula S _A =S ₁ +S ₂ -2S _B. In this case, the area ratio S _A /S _B is preferably within the range of 0.1 to 10.0, and more preferably within the range of 0.2 to 5.0. Specific examples of the value of the area ratio S _A /S _B include 0.3, 0.4, 0.5, 0.7, 1.0, 1.5, 2.0, etc. Note that if the outer circumferences 11a, 21a, 31a of the top members 11, 21, 31 and the outer circumferences 13a, 23a, 33a of the bottom members 13, 23, 33 completely match in plan view, the non-overlapping areas Since the area of the area S _A becomes 0, the value of the area ratio S _A /S _B also becomes 0.

The properties of the contents filled in the containers 10, 20, and 30 are not particularly limited, and may be arbitrary, such as liquid, solid, powder, granule, or a mixture of two or more of these. The types of contents are not particularly limited, and include beverages, foods, seasonings, cosmetics, pharmaceuticals, detergents, adhesives, household goods, industrial products, and the like.

Each member constituting the containers 10, 20, and 30 may be provided with one or more functionalities, such as an oxygen absorption function, an odor absorption function, and a non-adsorption function. Each member constituting the containers 10, 20, and 30 may each have at least one printed pattern. The materials constituting each member constituting the containers 10, 20, and 30 are not limited to resin, and may be laminated or blended with different materials such as paper, cloth, nonwoven fabric, fiber, metal, and inorganic compound.

Although the present invention has been described above based on the preferred embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

10, 20, 30... Container, 11, 21, 31... Top member, 11a, 21a, 31a... Outer periphery of top member, 12, 22, 32... Cylindrical member, 12a, 22a, 32a... Cylindrical member Upper end portion, 12b, 22b, 32b...lower end portion of the cylindrical member, 12c...end portion in the circumferential direction of the cylindrical member, 13, 23, 33...bottom member, 13a, 23a, 33a...outer peripheral portion of the bottom member, 14, 24, 34... Outlet.

Claims (3)

A flexible cylindrical member formed into a cylindrical shape from a rectangular flat member;
a top member joined to the upper end of the cylindrical member;
a bottom member joined to the lower end of the cylindrical member,
Of the top member and the bottom member, at least the bottom member is made of a hard molded product,
An outer circumference of the top member where the top member contacts the upper end of the cylindrical member and an outer periphery of the bottom member where the bottom member contacts the lower end of the cylindrical member are overlapped in the vertical direction. A container characterized in that, in plan view, the containers do not overlap except at a finite number of intersections, and the circumferential length of the outer periphery of the top member is equal to the circumferential length of the outer periphery of the bottom member. The container according to claim 1, wherein the top member and the bottom member are made of hard molded products. 3. The container according to claim 1, wherein at least one of the top member and the bottom member has a portion that can be elastically deformed depending on the internal pressure of the container.

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