JP7353045B2 - Container and its manufacturing method - Google Patents

Description

The present invention relates to a container and a method for manufacturing the same.

Patent Document 1 discloses a cylindrical housing tube with open ends at its distal end and base end, a bottom member provided at the open end of the proximal end, and a top plate member provided at the open end of the distal end. A cartridge for a fluid substance is described, the cartridge having the following structure and having a fluid substance filled therein. In the case of Patent Document 1, the contents are discharged when the nozzle pierces the top plate member.

Japanese Patent Application Publication No. 2013-56692

When attempting to provide a spout on the top surface made of a flexible film, there is a risk that the spout will not be stable even if the spout is erected upward from the top surface.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a container in which a spout can be stably provided on the top portion made of a flexible film, and a method for manufacturing the container.

In order to solve the above problems, the present invention provides a container having a spout in a top portion made of a film, wherein the spout includes a cylindrical portion including a flow path penetrating the top portion, and A container is provided, characterized in that it has a first flange part that comes into close contact with the front surface of the face part, and a second flange part that comes into close contact with the back surface of the top surface part.
The cylindrical portion, the first flange portion, and the second flange portion may be seamlessly formed by integral molding of resin.
The top surface portion has an opening through which a portion of the cylindrical portion of the spout is inserted between the first flange portion and the second flange portion, and the planar shape of the opening portion is closed. It may also be a different shape.
The top surface portion may include a reinforcing portion that increases the thickness of the film at a position in contact with the opening.
The top surface portion has a through hole penetrating both surfaces of the top surface portion at a position away from the opening, and the resin forming the first flange portion and the resin forming the second flange portion are passed through the through hole. may be connected.

The present invention also provides a method for manufacturing a container having a spout in a top portion made of a film, wherein the spout includes a cylindrical portion including a flow path penetrating the top portion, Molten resin is supplied around the top surface part to form the spout so that it has a first flange part that tightly contacts the front surface and a second flange part that tightly contacts the back surface of the top surface part. A method for manufacturing a container is provided.
The top surface portion has an opening through which a portion of the cylindrical portion of the spout is inserted between the first flange portion and the second flange portion, and the planar shape of the opening portion is closed. The cylindrical portion may be formed around the opening by passing a pin that closes the portion that becomes the flow path into the opening.
The molding device of the spout may have a gate so as to supply the molten resin from the back side of the top surface portion.
The gates may be arranged at two or more locations in the circumferential direction around the portion that becomes the flow path.
A projection projecting toward the film may be provided on the mold on the side opposite to the side on which the molten resin is supplied toward the film.

According to the present invention, since the flanges are brought into close contact with both surfaces of the top surface, it is possible to stably provide the spout even if the top surface is made of a flexible film.

FIG. 1 is a perspective view illustrating the appearance of a container of the present invention. FIG. 2 is a cross-sectional view showing a first embodiment of the structure near the top of the container. FIG. 7 is a sectional view showing a second embodiment of the structure near the top of the container. FIG. 3 is a cross-sectional view showing a first example of a method for forming a spout around the top surface portion. It is a sectional view showing a second example of a method of forming a spout around the top surface part. FIG. 7 is a cross-sectional view showing a third example of a method of forming a spout around the top surface portion. It is a sectional view showing a fourth example of a method of forming a spout around the top surface part.

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

FIG. 1 shows an example of a container. This container 10 includes a top member 11 having a spout 14, a cylindrical member 12 to which the top member 11 is joined at one end, and a bottom member 13 joined to the other end of the cylindrical member 12. It has a substantially cylindrical shape. This container 10 can be self-supporting. Here, the self-reliance of the container 10 is a property that allows it to stand on its own at least when filled with contents. Furthermore, it is preferable that the container 10 can stand on its own even when it is not filled with contents.

The top member 11 becomes the upper surface when it stands on its own, and the bottom member 13 becomes the lower surface when it stands on its own. The cylindrical member 12 is formed between the top member 11 and the bottom member 13 so as to cover the circumferential direction intersecting the vertical direction. The container 10 can be composed of three parts, each of which is a combination of a top member 11, a cylindrical member 12, and a bottom member 13.

The top member 11, the cylindrical member 12, and the bottom member 13 can be made of a film such as a resin film or a laminate film. The resin film may be a single layer resin film or a multilayer resin film. In the laminate film, examples of the different material laminated with the resin include metal foil, metal vapor deposited layer, paper, and the like. A laminate film has a resin layer on at least one side of different materials. From the viewpoint of barrier properties, rigidity, etc., it is preferable that the laminate film contains metal foil such as aluminum foil.

As shown in FIGS. 2 and 3, the joint between the top member 11 and the cylindrical member 12 is formed by bending the peripheral edge 11b of the top member 11 with respect to the top 11a, and forming the inner surface of the cylindrical member 12. They can be configured to face each other. Here, the top surface portion 11a of the top surface member 11 is a portion of the film in which the spout 14 is provided. In the first embodiment shown in FIG. 2, the inner surface of the top member 11 is joined to the inner surface of the cylindrical member 12 at the peripheral edge 11b. Therefore, the peripheral portion 11b is bent toward the front side of the top member 11. In the second embodiment shown in FIG. 3, the outer surface of the top member 11 is joined to the inner surface of the cylindrical member 12 at the peripheral edge 11b. Therefore, the peripheral edge portion 11b is bent toward the back side of the top member 11. Although not particularly illustrated, the peripheral edge portion 11b of the top member 11 may be joined to the outer surface of the cylindrical member 12. By annularly joining the peripheral edge portion 11b of the top member 11 to the end portion of the cylindrical member 12, the joining strength can be increased.

The spout 14 has a cylindrical portion 14a including a flow path 15 passing through the top surface portion 11a. Through this channel 15, the contents filled in the container 10 can be taken out from the back side of the top member 11 to the front side. Further, the spout 14 has a first flange portion 14b that is in close contact with the front surface of the top surface portion 11a, and a second flange portion 14c that is in close contact with the back surface of the top surface portion 11a. The top surface portion 11a is sandwiched between the first flange portion 14b and the second flange portion 14c. In the following description, the first flange part 14b and the second flange part 14c may be collectively referred to as flange parts 14b and 14c.

In this embodiment, the top surface portion 11a is circular, and the flange portions 14b and 14c are also circular. The planar shapes of the flange portions 14b and 14c include circular, elliptical, and polygonal shapes. Examples of polygons in the planar shape of the flange portions 14b and 14c include convex polygons such as a triangle, quadrangle, pentagon, hexagon, heptagon, and octagon, and concave polygons such as a star shape. The relationship between the planar shape of the first flange portion 14b and the planar shape of the second flange portion 14c is arbitrary, and may be a congruent figure that overlaps each other in the axial direction of the cylindrical member 12, or a similar figure with different radial dimensions. Often, the shapes may be angularly shifted around the axis, or may be different shapes from each other. The planar shape of the flange portions 14b and 14c may be a shape extending in one or more directions from the center, or may be a shape extending in three or more radial directions, such as a cross shape or a swastika shape. Preferably, the planar shape of the flange portions 14b, 14c is a shape that extends point-symmetrically with respect to the center, or a shape that is line-symmetrically with respect to a line passing through the center. As will be described later, when molding the flange portions 14b and 14c from molten resin, it is preferable to have a shape that allows the molten resin to flow easily. The thickness of the flange portions 14b, 14c may be uniform, or may be thinner as the distance from the center increases.

The cylindrical portion 14a, the first flange portion 14b, and the second flange portion 14c can be seamlessly formed by integral molding of resin. The top surface portion 11a has an opening portion 11d through which a portion of the cylindrical portion 14a between the first flange portion 14b and the second flange portion 14c is inserted. The planar shape of the opening 11d is preferably a closed shape, such as a circle, an ellipse, or a polygon. As a result, the opening edge 11c has a seamless structure over the entire circumference. Here, the opening edge 11c is the edge of the top member 11 that is in contact with the opening 11d.

The spout 14 having the above-described structure can be formed by a method of supplying molten resin around the top surface portion 11a and molding the spout 14. For example, as shown in FIG. 4, the molding device of the spout 14 creates a mold 20 that includes a cavity 21 placed on the back side of the top member 11 and a core 22 placed on the front side of the top member 11. May have. The top member 11 used to form the spout 14 may be a film having a wider area before the top portion 11a and peripheral edge portion 11b are cut and bent to match the shape of the container. When the spout 14 is manufactured by insert molding, the top member 11 preferably has heat resistance that can withstand the temperature of the molten resin that constitutes the spout 14.

Molten resin (not shown) is supplied to the space 24 formed between the cavity 21 and the core 22 via the gate 23. Since it is preferable that the gate mark is on the back side of the top member 11, it is preferable that the gate 23 supplies the molten resin from the back side of the top member 11. The mold 20 may include a pin 25 that closes a portion of the spout 14 that becomes the flow path 15 . The pin 25 is inserted into the opening 11d of the top member 11. When the molten resin supplied to the space 24 of the mold 20 solidifies, the spout 14 is molded so as to be in close contact with the top member 11. Since a gap is formed between the pin 25 and the opening edge 11c through which the molten resin can pass, the molten resin supplied from the back side of the top member 11 does not reach the front side of the top member 11. can. The cylindrical portion 14a is formed around the pin 25. The first flange portion 14b is formed between the core 22 and the front surface of the top member 11. The second flange portion 14c is formed between the cavity 21 and the back surface of the top member 11.

When the top member 11 is made of a flexible film, there is a possibility that the opening edge 11c of the top member 11 may be displaced within the space 24 between the cavity 21 and the core 22. In order to suppress displacement of the opening edge 11c, gates 23 are arranged at two or more locations in the circumferential direction of the opening 11d around the portion that becomes the flow path 15 in FIG. Thereby, the flow of the molten resin is dispersed, and displacement of the opening edge 11c can be suppressed.

Further, in FIG. 4, a protrusion 26 that projects toward the top member 11 is provided on the mold 20 on the opposite side of the gate 23 that supplies molten resin toward the top member 11. Thereby, the protrusion 26 supports the top member 11 against the flow of the molten resin supplied from the gate 23, and the displacement of the opening edge 11c can be suppressed. Since molten resin is not supplied to the location where the protrusion 26 is arranged, the protrusion 26 is intermittently placed in a part of the circumferential direction of the opening 11d so that the cylindrical part 14a and the first flange part 14b are connected. It is preferable to form the

In FIG. 5, the opening edge 11c of the top member 11 is provided with a bent portion 11e. By bringing the opening edge 11c close to or in contact with the inner surface of the mold 20, displacement of the opening edge 11c can be suppressed. Further, in FIG. 6, a reinforcing layer 16 is laminated by adding material to the opening edge 11c of the top member 11. By bringing the reinforcing layer 16 close to or in contact with the inner surface of the mold 20, displacement of the opening edge 11c can be suppressed.

The bent portion 11e and the reinforcing layer 16 function as a reinforcing portion that increases the thickness of the film at the opening edge 11c. Since the first flange portion 14b is formed between the front surface of the top member 11 and the core 22 at locations where the reinforcement portion is not provided on the front surface of the top member 11, the top surface member 11 is The first flange portion 14b can be brought into close contact with the front surface. The reinforcing portion may be continuously formed in a ring shape around the opening 11d. A reinforcing portion may be intermittently formed in a portion of the opening 11d in the circumferential direction. It is also possible to use a combination of two or more types of reinforcing parts such as the bent part 11e and the reinforcing layer 16 for the same spout 14. Further, the reinforcing portion can also be used in combination with the protrusion 26. It is preferable that the reinforcing portion be provided at a position in contact with the opening 11d. The reinforcing layer 16 may be provided at a position away from the opening 11d.

In addition, in FIGS. 5 and 6, since the gate 23 is arranged on the back side of the top member 11, the reinforcing portion is provided so as to be close to or in contact with the inner surface of the core 22 at least on the front side of the top member 11. It is being The reinforcing portion is preferably provided on at least the surface of the top member 11 opposite to the gate 23, and the reinforcing portion may be provided on both sides of the top member 11. The position where the reinforcing part is provided on the front surface of the top member 11 and the position where the reinforcing part is provided on the back surface of the top member 11 may be the same or different.

In FIG. 7, the top member 11 has a through hole 17 at a position away from the opening 11d. Since the through hole 17 penetrates both sides of the top member 11, the molten resin is easily supplied to the front surface of the top member 11 through the through hole 17, and the first flange portion 14b can be formed well. It becomes easier. Furthermore, by molding the spout 14 with the molten resin supplied inside the through hole 17, the resin forming the first flange portion 14b and the resin forming the second flange portion 14c are passed through the through hole 17. are connected. The through hole 17 may be provided at a position facing the gate 23. It is also possible to use a combination of the through hole 17 located away from the opening 11d and at least one of the protrusion 26, the bent portion 11e, or the reinforcing layer 16 on the opening edge 11c.

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. Modifications include additions, substitutions, omissions, and other changes to components in each embodiment. It is also possible to appropriately combine the components used in two or more embodiments.

The top member can be composed of a laminate having, for example, a sealant layer, a base material layer, and the like. A barrier layer may be provided on the top member. When the flanges are brought into close contact with both sides of the top member, sealant layers may be provided on both sides of the top member, and each sealant layer may be bonded to each flange. Examples of materials constituting the sealant layer include polyolefin resins such as polyethylene (PE) and polypropylene (PP), polyester resins such as polyethylene terephthalate (PET), cycloolefin polymers (COP), and cycloolefin copolymers (COC). Examples include at least one of cyclic olefin resins, adhesive resins, coating agents, etc. As the barrier layer, aluminum foil or aluminum vapor-deposited film is preferred. As the material constituting the base layer, nylon (aliphatic polyamide), polyester, etc. are preferable. The thickness of the base material layer is, for example, 50 to 50 μm, more preferably 10 to 30 μm. The flexible film preferably has a total thickness of, for example, 500 μm or less, which is the total thickness of each layer, and may be about 350 μm or 200 μm.

In a container (cylindrical container) having a cylindrical member and an end member (top member, bottom member), the planar shape of the end face (top or bottom) of the cylindrical member is not limited to a circle, but may also be an ellipse or an oblong shape. , oval, polygon, etc. Examples of planar polygons include convex polygons such as triangles, quadrilaterals, pentagons, hexagons, heptagons, and octagons, and concave polygons such as stars. The planar shape of the end member and the horizontal cross-sectional shape of the cylindrical member can be appropriately set depending on the planar shape of the end surface (top surface or bottom surface). For example, when the end member has a polygonal shape, the cylindrical member also has a polygonal column shape. When the end surfaces of the cylindrical member are polygonal, the axial direction can be a direction that connects substantially centers (eg, centers of gravity) of the polygons forming both end surfaces. The radial direction that intersects the axis may be any direction that passes approximately the center of the end face along the end face, for example, the direction that connects the midpoints of two opposing sides, or the direction that connects one vertex and the midpoint of the opposite side. , diagonal direction (direction connecting two opposing vertices), and the like. Here, the end face of the cylindrical member refers to the inner side surrounded by the cylindrical member in the plane perpendicular to the axis at both ends of the cylindrical member in the axial direction, regardless of the presence or absence of an end face member on each end face. It is a virtual surface consisting of areas.

The structure of the cylindrical member may be a tubular shape with no seam in the circumferential direction, or a single flat sheet may be rolled into a C-shaped cross section and joined by providing a seam parallel to the axis at one point in the circumferential direction. It's okay. When providing a seam joint in the circumferential direction of a cylindrical member, it is preferable to overlap and join the inner surface of one end edge and the outer surface of the other end edge, since the joint portion is less likely to protrude to the outer periphery. At the joint of the cylindrical member, the inner surfaces of both end edges or the outer surfaces thereof may be opposed and joined. Cylindrical members are not limited to cases where the top and bottom surfaces are congruent (same shape and dimensions); for example, the top surface is large and the bottom surface is small, or the top surface is small and the bottom surface is large. It may have a taper. The top surface and the bottom surface may have similar shapes, or may have different shapes. The cylindrical member may be constructed by joining both ends of a substantially rectangular film. When two opposing sides of a substantially rectangular film are formed into arc shapes, the cylindrical member can be configured into a conical shape.

The diameter of the cylindrical member is, for example, in the range of 5 to 250 mm, preferably in the range of 10 to 200 mm. Here, when the cylindrical member has a rectangular cylindrical shape, the diameter is the distance between mutually opposing vertices, sides, or vertices, and when there are two or more of these, the minimum value and It is preferable that the maximum value is within the above range. The diameter of the cylindrical member is not particularly limited, but may be, for example, 20 mm, 50 mm, 100 mm, 150 mm, etc. The cylindrical member and the bottom member may be composed of the same laminate as the top member, or may have a different structure from the top member.

The nature of the contents accommodated in the container is 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 container may be provided with one or more functionalities, such as an oxygen absorption function, an odor absorption function, and a non-adsorption function. The cylindrical member, the top member, the bottom member, and the spout may each have at least one printed pattern. Each member constituting the container is not limited to resin, and may be laminated or blended with different materials such as paper, cloth, nonwoven fabric, fiber, etc.

When the container is used, when the container is placed with the spout opened, the spout usually faces upward, so the spout is provided at the top of the container. The direction of the spout at this time is not limited to vertically upward, but may be diagonally upward. When pouring out the contents, the spout may be oriented sideways or downward, or the contents may be sucked with a straw, pump, etc. with the spout facing upward. When the spout is sealed with a cap, stopper, etc., the orientation of the spout is not limited, for example, when placing the container for purposes such as storage, preservation, display, etc., and the spout may be oriented sideways or downward, for example. In addition, when the spout is provided with a cock or the like, the spout may be provided on the side or bottom of the container, and the container may be used with the spout facing sideways or downward. The number of spouts provided in the container is not limited, and may be two or more. The spout may be used for purposes other than pouring out the contents, such as injecting the contents and letting air in.

DESCRIPTION OF SYMBOLS 10... Container, 11... Top member, 11a... Top part, 11b... Periphery, 11c... Opening edge, 11d... Opening, 11e... Bent part, 12... Cylindrical member, 13... Bottom member, 14... Note Outlet, 14a... Cylindrical part, 14b... First flange part, 14c... Second flange part, 15... Channel, 16... Reinforcement layer, 17... Through hole, 20... Mold, 21... Cavity, 22... Core , 23...Gate, 24...Space, 25...Pin, 26...Protrusion.

Claims (10)

A container having a spout in a top portion made of film,
The top surface portion is composed of a resin film or a laminate film, and in the laminate film, the dissimilar material laminated with the resin is a metal foil or a metal vapor deposited layer,
The spout includes a cylindrical part including a flow path passing through the top part, a first flange part that comes into close contact with the front surface of the top part, and a second flange part that comes into close contact with the back side of the top part. The channel has an opening so that the contents filled in the container can be taken out from the back side of the top part to the front side, and the top part has a connection between the first flange part and the first flange part. A container characterized by being sandwiched between two flange parts . The container according to claim 1, wherein the cylindrical portion, the first flange portion, and the second flange portion are seamlessly formed by integral molding of resin. The top surface portion has an opening through which a portion of the cylindrical portion of the spout is inserted between the first flange portion and the second flange portion, and the planar shape of the opening portion is closed. 3. The container according to claim 1 or 2, wherein the container has a shape that is similar to the shape of the container. 4. The container according to claim 3, wherein the top portion has a reinforcing portion that increases the thickness of the film at a position in contact with the opening. The top surface portion has a through hole penetrating both surfaces of the top surface portion at a position away from the opening, and the resin forming the first flange portion and the resin forming the second flange portion are passed through the through hole. 4. The container according to claim 3, wherein the containers are connected to each other. A method for manufacturing a container having a spout in a top portion made of a film, the method comprising:
The top surface portion is composed of a resin film or a laminate film, and in the laminate film, the dissimilar material laminated with the resin is a metal foil or a metal vapor deposited layer,
The spout includes a cylindrical part including a flow path passing through the top part, a first flange part that comes into close contact with the front surface of the top part, and a second flange part that comes into close contact with the back surface of the top part. The channel has an opening so that the contents filled in the container can be taken out from the back side of the top part to the front side, and the top part has a connection between the first flange part and the first flange part. 2. A method of manufacturing a container, comprising: supplying molten resin around the top surface portion to form the spout so as to be sandwiched between the top surface portion and the second flange portion. The top surface portion has an opening through which a portion of the cylindrical portion of the spout is inserted between the first flange portion and the second flange portion, and the planar shape of the opening portion is closed. 7. The method of manufacturing a container according to claim 6, wherein the container has a shape similar to that of a container, and a pin that closes a portion that becomes the flow path is passed through the opening, and the cylindrical portion is formed around the pin. . 8. The method for manufacturing a container according to claim 6, wherein the molding device for the spout has a gate so as to supply the molten resin from the back side of the top surface. Manufacturing the container according to any one of claims 6 to 8, wherein the gates for supplying the molten resin are arranged at two or more locations in the circumferential direction around the portion that becomes the flow path. Method. The container according to any one of claims 6 to 9, wherein a projection projecting toward the film is provided on the mold on the side opposite to the side on which the molten resin is supplied toward the film. Production method.

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