JP2021169317A - Beverage container with lid - Google Patents

Abstract

To provide a beverage container with a lid capable of enhancing adhesion between a container body and a lid body by suppressing an influence of forming accuracy of the container body, in closing of the lid body with respect to the container body.SOLUTION: A beverage container with a lid includes: a container body 20 which has an inverted truncated cone glass-like shape having an upper part opening 21, and in which a recessed groove-like fitting part 50 is formed circling in parallel with the upper part opening at an inner peripheral part 24a in the vicinity of an edge part of the upper part opening; and a lid body 40 in which a lid flange part 42 coming into contact with the edge part of the upper part opening of the container body and a lid surface part 41 for covering the upper part opening via a hanging part 43 entering the upper part opening inner periphery from the lid flange part are formed, in which a protrusion strip fitting part 55 to be fitted into the groove-like fitting part when the lid is closed is formed at an outer peripheral part 43a of the hanging part, and in which a drinking mouth part 45 is formed at the lid surface part.SELECTED DRAWING: Figure 4

Description

The present invention relates to a beverage container with a lid.

For example, in take-out type beverage sales at convenience stores, fast food stores, coffee shops, stalls, and other beverage stores, a disposable beverage container made of synthetic resin such as PET resin is filled with an appropriate beverage and provided. .. Since the purchaser carries the product with him, the take-out type beverage container has a removable lid made of synthetic resin such as PET resin fitted to the upper opening of the container body to prevent the contents from spilling. Will be done.

In recent years, the problem of plastic waste such as marine plastic waste has attracted attention, and there is a tendency to refrain from manufacturing or using synthetic resin products from the viewpoint of reducing the environmental load. Therefore, in the field of beverage containers, attention has been paid to the fact that the container body in which the beverage is filled is made of paper. In this type of beverage container, the container body has an outer winding edge at the upper opening, and the peripheral wall extending downward from the outer peripheral edge of the synthetic resin lid is the outer winding edge of the container body. The lid is closed by outer fitting, which is attached to the container from the outside and locks the peripheral wall portion of the lid body to the lower side of the outer winding edge portion of the container body.

In a beverage container with a lid, a gap is likely to occur in the fitting portion between the paper container body and the resin lid, and when the container is tilted during carrying or drinking, liquid is liquid from the gap in the fitting portion. The contents may leak. In particular, if the contents leak from the gap of the fitting portion during drinking, it is highly likely that the user who is drinking does not notice the leakage, and there is a risk that the clothes or the like may be soiled due to the unexpected leakage. Therefore, there has been proposed a beverage container with a lid in which the fitting portion at the outer peripheral edge of the lid is formed into a curved shape corresponding to the outer winding edge of the container body (see, for example, Patent Document 1).

In the conventional beverage container 100 shown in FIG. 6, the fitting portion of the lid 140 is a curved outer peripheral edge portion 142 corresponding to the shape of the outer winding edge portion 120 of the container body 120, so that the container body 120 The contact portion between the outer winding edge portion 122 and the fitting portion (outer peripheral edge portion 142) of the lid 140 is increased to improve the adhesion and suppress the leakage of the contents. In FIG. 6, reference numeral 130 is a sleeve wound around the container body 120, 141 is a lid surface portion of the lid body 140, and 142e is an end portion of the outer peripheral edge portion 142.

By the way, since the paper container body is formed by forming a fan-shaped or strip-shaped paperboard into a cylindrical shape, it is difficult to precisely mold it like a synthetic resin. Further, when the paperboard is formed into a cylindrical shape, both ends of the paperboard are overlapped and bonded, so that a slight step is formed in the bonded portion of the paperboard. Then, in the case of fitting in which the shapes of the fitting portions of the container body and the lid body correspond to each other, the molding accuracy affects the adhesion performance of the fitting portion. Therefore, when the lid is fitted to the paper container body, which is difficult to be precisely molded, there is a problem that a beverage container having insufficient adhesion between the container body and the lid is likely to occur.

Japanese Unexamined Patent Publication No. 2016-169023

The present invention has been made in view of these points, and when the lid is closed with respect to the container body, it is possible to suppress the influence of the molding accuracy of the container body and improve the adhesion between the container body and the lid. Provide a container for beverages with a lid that can be used.

That is, the invention of claim 1 has a cup shape of an inverted conical base having an upper opening, and a concave groove-shaped fitting portion that orbits in parallel with the upper opening is provided on an inner peripheral wall portion near the edge of the upper opening. A lid surface portion that covers the upper opening via a formed container body, a lid flange portion that abuts on the edge portion of the upper opening of the container body, and a hanging portion that enters the inner circumference of the upper opening from the lid flange portion. Is formed, and a ridge fitting portion that fits into the concave groove-shaped fitting portion when the lid is closed is formed on the outer peripheral portion of the hanging portion, and a spout portion is formed on the lid surface portion. The present invention relates to a container for beverages with a lid, which comprises a lid.

The invention of claim 2 relates to the beverage container with a lid according to claim 1, wherein the container body is made of paper or a material mainly composed of paper or plant fiber.

The invention of claim 3 relates to the beverage container with a lid according to claim 1 or 2, wherein the spout portion is formed in the vicinity of the hanging portion.

The invention of claim 4 relates to the beverage container with a lid according to any one of claims 1 to 3, wherein a heat insulating portion is formed on the outside of the container body.

The invention of claim 5 relates to the beverage container with a lid according to claim 4, wherein the heat insulating portion is formed by winding a heat insulating paper sleeve.

The invention of claim 6 relates to the beverage container with a lid according to claim 5, wherein the heat insulating paper sleeve is embossed paper.

According to the beverage container with a lid according to the invention of claim 1, it has a cup shape of an inverted conical stand having an upper opening, and a concave portion that circulates in parallel with the upper opening on an inner peripheral wall portion near the edge of the upper opening. The container body in which the groove-shaped fitting portion is formed, the lid flange portion that abuts on the edge portion of the upper opening of the container body, and the hanging portion that enters the inner circumference of the upper opening from the lid flange portion. A lid surface portion that covers the upper opening is formed, and a convex strip fitting portion that is fitted to the concave groove-shaped fitting portion when the lid is closed is formed on the outer peripheral portion of the hanging portion, and the lid surface portion is formed. Since it is provided with a lid on which a spout is formed, the influence of the molding accuracy of the container body is suppressed, the adhesion between the container body and the lid is improved, and the lid is properly closed only by internal fitting. It can be covered and the leakage of contents can be effectively suppressed.

According to the container for beverages with a lid according to the invention of claim 2, in the invention of claim 1, since the container body is made of paper or a material mainly composed of paper or plant fiber, it can contribute to the reduction of environmental load and the beverage. Suitable as a material for containers.

According to the beverage container with a lid according to the invention of claim 3, in the invention of claim 1 or 2, since the spout portion is formed in the vicinity of the hanging portion, the user can easily drink.

According to the beverage container with a lid according to the invention of claim 4, in the inventions of claims 1 to 3, since the heat insulating portion is formed on the outside of the container body, the influence of heat can be mitigated. It can be easily grasped.

According to the container for beverages with a lid according to the invention of claim 5, in the invention of claim 4, since the heat insulating portion is formed by wrapping a heat insulating paper sleeve, it can be manufactured inexpensively and easily and is disposable. Suitable for use in containers.

According to the container for beverages with a lid according to the invention of claim 6, in the invention of claim 5, since the heat insulating paper sleeve is embossed paper, the strength can be improved as well as the heat insulating effect.

It is the schematic sectional drawing of the beverage container with a lid which concerns on one Example of this invention. It is a schematic cross-sectional view near the edge of the upper opening at the time of opening of a beverage container with a lid. It is a top view of the lid body. It is a schematic cross-sectional view near the edge of the upper opening when the lid is closed of the beverage container with a lid. It is a schematic cross-sectional view near the edge of the upper opening at the time of press-fitting a lid body into a beverage container with a lid. It is a schematic cross-sectional view near the edge of the upper opening of a conventional beverage container.

The beverage container 10 with a lid according to an embodiment of the present invention shown in FIG. 1 is a container for filling various beverages, and includes a container body 20 and a lid 40. The beverage is filled and the lid 40 is covered and provided to the customer. The type of beverage filled in the beverage container 10 is not particularly limited. For example, cold beverages or hot beverages such as water, soft drinks such as juices and carbonated beverages, coffee, tea, various teas, milk beverages, cocoa, alcoholic beverages, cocktails, and other regional specialty beverages.

The beverage container 10 is used, for example, when selling beverages at convenience stores, supermarkets, department stores, restaurants, food stalls, etc., and also for providing buffet styles, catering, catering, home delivery services, and the like. The main expected use is a single-use container (disposable container) used for one-time use, which is called one-way or disposable. By using a single-use container, it is convenient for hygiene management of beverages.

The container body 20 is a cup-shaped container with an inverted truncated cone having an upper opening, and is filled with various beverages. The container body 20 is made of paper or a material mainly composed of paper or plant fiber. Paper materials are preferable from the viewpoint of reducing the environmental load and are also excellent in heat resistance, so that they can be suitably used as materials for beverage containers. Further, in the container body 20, in order to impart water resistance, heat resistance, oil resistance, etc., a resin film such as a polyethylene resin, a polystyrene resin, a polypropylene resin, or a polyester resin is laminated inside or outside the container. You may. The thickness of the resin film to be laminated is not particularly limited, but is, for example, about 15 to 40 μm. In the embodiment, a heat-resistant PET resin film having a thickness of 33 μm is laminated.

As shown in FIG. 1, the container body 20 is provided with an outer winding edge portion 22 at the upper opening 21, and a container body portion 24 is continuously provided from the upper opening 21 to the container bottom portion 23 in a reverse taper shape to form a substantially inverted cone. It has a trapezoidal shape. The container body 20 is manufactured by a known method for manufacturing a paper container. For example, the fan-shaped or strip-shaped body paperboard 24s is formed in a tubular shape to form a container body portion 24, and the upper portion of the body plate paper 24s is wound outward to form an upper opening 21 having an outer winding-shaped edge portion 22. At the same time, the container bottom portion 23 is formed in the bent portion 29 at the bottom of the body paperboard 24s by joining and bonding with the bent portion 28 of the circular bottom paperboard 23s to obtain the container body 20. The container body 20 is formed in a cylindrical shape in which the container body 24 is substantially vertical by making the upper opening 21 and the container bottom 23 substantially the same diameter, and the upper opening 21 is formed as in the embodiment. By making the diameter larger than that of the bottom 23 of the container, the body 24 of the container is formed into an inverted cone shape having a tapered shape. The inverted cone-shaped container body 20 is convenient for stacking and accommodating.

As shown in the figure, the container body 20 has a recess that circulates in parallel with the outer winding edge portion 22 of the upper opening 21 on the inner peripheral wall portion 24a of the container body portion 24 near the outer winding edge portion 22 of the upper opening 21. A groove-shaped fitting portion 50 is formed. The concave groove-shaped fitting portion 50 is a portion that enables the lid body 40, which will be described later, to be internally fitted. After molding the container body 20, the concave groove fitting portion 50 presses a predetermined position of the container body 24 from the inside of the container body 20 by using a known grooving device, an appropriate pressing device such as a jig, or the like. As shown in the figure, a part of the container body 24 is extruded from the inside to the outside. Therefore, the outer peripheral ridge portion 25 is formed over the entire circumference at the position corresponding to the concave groove-shaped fitting portion 50 of the outer peripheral wall portion 24b of the container body portion 24.

In the container body 20, it is preferable to form the heat insulating portion 30 on the outside. The heat insulating portion 30 is a portion for making it difficult for the temperature of the beverage in the container body 20 to be transmitted to the user's hand when the user grips the container body 20. For example, when the content is a hot beverage, it may be hot and difficult to hold the container, but the heat conduction portion 30 relaxes the heat conduction so that the container can be easily grasped. Further, when the content is a cold beverage such as a beverage containing ice, dew condensation may occur on the container body 24, but the heat insulating portion 30 can suppress the dew condensation, and the user can use the water droplets of the dew condensation to hold his / her hand. It is possible to grip the container without getting it wet.

As the heat insulating portion 30, a known container heat insulating structure such as embossing of the container body 24 of the container body 20, uneven processing of the outer peripheral surface of the container body 20 with heat insulating ink or the like, winding of a sleeve, etc. can be formed. For example, the heat insulating portion 30 is preferably formed by wrapping the heat insulating paper sleeve 31 for use in a disposable container. The heat insulating paper sleeve 31 can be manufactured inexpensively and easily. In particular, if the heat insulating paper sleeve 31 is made of embossed paper, the strength can be improved as well as the heat insulating effect. Further, the heat insulating paper sleeve 31 may be directly adhered to the outside of the container body 20, but as shown in FIGS. 1 and 2, the upper side is adhered to the outer peripheral convex portion 25 of the container body 24. , An air layer 35 can be formed between the container body 20 and the container body 20, and the heat insulating effect can be improved.

The lid body 40 is a member that covers the upper opening 21 of the container body 20, and has a lid surface portion 41, a lid collar portion 42, and a hanging portion 43 as shown in FIG. The lid 40 is preferably made of synthetic resin because it has a large degree of freedom in the shape of the lid and can be easily molded. For example, a molded product of a synthetic resin sheet is preferable from the viewpoint of mass productivity, economy, and the like. .. Examples of the synthetic resin sheet constituting the lid 40 include a sheet of a thermoplastic resin such as polyethylene, polypropylene, polystyrene, and polyethylene terephthalate, and a sheet of a thermoplastic resin of a biodegradable resin such as polylactic acid. The synthetic resin sheet is formed into various shapes including those shown in the figure by vacuum forming.

The lid surface portion 41 covers the upper opening 21 of the container body 20 and is formed with a drinking spout portion 45. The drinking spout 45 is an opening that allows the user to drink the beverage, and is preferably formed in the vicinity of the hanging portion 43 on the outer edge side of the lid surface portion 41 from the viewpoint of ease of drinking. Further, the drinking spout portion 45 has a structure in which the spout portion 45 is closed before use and opened during use (drinking) in order to suppress leakage of the contents. For example, a pull-top type such as a pull tab or a stayion tab that pulls up a part of the lid surface portion 41 to open it, a push-down type that pushes a part of the lid surface portion 41 inward to open it, or an opening by inserting a suction member such as a straw. It is possible to have an appropriate structure depending on the type of contents such as the insertion port to be made. The spout portion 45 shown in FIGS. 1 and 3 has a finger hook portion 46 projecting from the lid surface portion 41 and a broken portion 47 formed around the finger hook portion 46, and the finger hook portion 46 is pulled up. This is a pull-top type drinking spout in which the broken portion 47 is broken and opened. Reference numeral 48 in the drawing is a holding recess for holding the finger hook portion 46 after pulling up.

As shown in FIGS. 1 and 3, the lid flange portion 42 is a portion that comes into contact with the edge of the upper opening 21 of the container body 20 over the entire circumference, and the lid body 40 is excessively inside the container body 20 when the lid is closed. Suppresses getting into and getting depressed. The shape of the lid portion 42 is not particularly limited as long as it can come into contact with the edge of the upper opening 21 of the container body 20. For example, since the outer winding edge portion 22 is formed in the upper opening 21 and the upper side of the edge portion is curved, as shown in FIGS. It is preferably part 42a. The curved lid flange portion 42a improves the sense of moderation when the lid body 40 is closed. The lid collar portion 42 may be knurled if necessary.

As shown in FIGS. 2 and 4, the hanging portion 43 is a portion interposed between the lid surface portion 41 and the lid flange portion 42, and enters the inner circumference of the upper opening 21 of the container body 20 from the lid flange portion 42. It is laid around like this. When the lid is closed, the hanging portion 43 approaches or comes into contact with the inner peripheral wall portion 24a in the vicinity of the upper opening 21. The shape of the hanging portion 43 is appropriate, such as being inclined in the direction perpendicular to the lid surface portion 41 or along the inner peripheral wall portion 24a of the container body 20. In the illustrated example, the lid surface portion 41 is connected to the lower end of the hanging portion 43, but the lid surface portion 41 may be raised from the lower end of the hanging portion 43 as appropriate.

The hanging portion 43 is formed with a ridge fitting portion 55 that fits into the concave groove-shaped fitting portion 50 of the container body 20 when the lid is closed on the outer peripheral portion 43a. The ridge fitting portion 55 is a portion that can hold the inner fitting of the lid body 40 by fitting with the concave groove-shaped fitting portion 50 of the container body 20 when the lid is closed.

Conventionally, it has been difficult to close the lid body only by fitting it inside the paper container body. This is because when the container body is made of paper, the inner peripheral wall near the upper opening has to be a substantially flat surface according to normal production, and the lid is attached to this flat inner surface. This is because it was structurally difficult to fit the inside. In other words, in order to close the lid with the paper container body only by internal fitting, it is necessary to hold the hanging portion of the lid in a state of being pressed against the substantially flat inner peripheral wall of the container body. However, if the inner peripheral wall portion is a flat surface portion, the pressure contact portion is slippery and the pressure contact state is easily released by a slight vibration or impact, and the lid body comes off. In addition, when manufacturing a paper container body, it is not possible to perform precise molding like synthetic resin, and since it has the deformability peculiar to paper, the inner fitting of the lid like synthetic resin is maintained. Can't. Therefore, when the lid is closed by internal fitting that allows the hanging portion of the lid to enter the container body, the container body and the lid are fixed by using other auxiliary fixing means such as adhesive tape. , It was necessary to add a special configuration other than internal fitting.

Therefore, in the beverage container 10 of the present invention, the concave groove-shaped fitting portion 50 is formed on the inner peripheral wall portion 24a of the container body 20, and the ridge fitting portion 55 is formed on the outer peripheral portion 43a of the hanging portion 43 of the lid body 40. By forming the above, it is possible to close the lid only by internal fitting, which was not possible with conventional paper containers. Here, the preferable conditions of the concave groove fitting portion 50 and the ridge fitting portion 55 will be described in detail below.

First, the position of the concave groove fitting portion 50 is not particularly limited as long as it is formed in the vicinity of the upper opening 21 which is above the liquid level position of the beverage filled in the container body 20, but for example, the upper opening 21 It is formed at a position where the distance from the upper part of the concave groove-shaped fitting portion 50 is about 3 to 10 mm. If the groove-shaped fitting portion 50 is too close to the upper opening 21, the lid 40 may not be properly fitted inside, and if it is too far from the upper opening 21, the lid 40 may enter the container body 20 more than necessary. There's a problem.

Further, the ridge fitting portion 55 provided on the hanging portion 43 of the lid body 40 is appropriately set according to the position of the concave groove fitting portion 50. Here, assuming that the lid 40 is made of a synthetic resin sheet molded product, the lid 40 has a large degree of freedom in shape and can be easily molded precisely, and the inner fitting structure of the present invention is used. In this case, even for the paper container body 20 where precise molding is difficult, the convex groove fitting portion 55 of the synthetic resin sheet lid 40 is deformed by the concave groove-shaped fitting portion 50 of the container body 20. Effective adhesion can be ensured by the partial deformability in the above and the overall rigidity of the container body 20.

That is, as described above, while the container body 20 can be partially deformed by the structure of the resin fiber, the container body 20 has a characteristic that the entire surface is relatively rigid and the amount of deformation is small, and the other synthetic resin sheet lid. The body 40 has a characteristic that the whole deformation occurs more easily than the partial deformation, so to speak, it has flexibility. The difference between these two characteristics causes a defect that the lid is separated from the container body and the fitting becomes loose in the case of the above-mentioned conventional outer fitting. On the contrary, the deformation of the convex strip fitting portion 55 of the lid body is firmly received by the partial deformability of the concave groove-shaped fitting portion 50 of the container body 20 and the overall rigidity of the container body, and effective adhesion is achieved. It is an advantage that the sex can be secured. Further, when the paper container body is formed into a cylindrical shape, a slight step is generated in the bonded portion where both ends of the paperboard are overlapped, but this slight step affects the molding accuracy of the container body. In the outer fitting of the above, the adhesion tends to be insufficient. In the inner fitting of the present invention, the influence of the molding accuracy of the container body can be alleviated, so that sufficient adhesion can be obtained even in the bonded portion of the container body having a slight step. Therefore, the lid does not easily come off even when the container is tilted due to drinking or the like, and the closed state of the lid can be appropriately maintained in normal use.

In the container body 20 and the lid 40, as shown in FIGS. It is largely (D1> D2). The diameter D1 at the position of the ridge fitting portion 55 of the lid 40 corresponds to the distance between the vertices (the most protruding position) of the ridge fitting portion 55. Further, the diameter D2 at the position of the concave groove-shaped fitting portion 50 of the container body 20 is the inner peripheral wall portion 24c (the boundary portion between the concave groove-shaped fitting portion 50 and the inner peripheral wall portion 24a) on the upper side of the concave groove-shaped fitting portion 50. ) Corresponds to the distance between.

Since the diameter D1 at the position of the convex fitting portion 55 of the lid 40 is larger than the diameter D2 at the position of the concave groove fitting portion 50 of the container body 20, the convex fitting portion 55 becomes the concave groove fitting portion 50. On the other hand, it can be properly fitted. Further, when the apex of the ridge fitting portion 55 is brought into contact (pressure contact) with the apex (the most recessed position) of the concave groove fitting portion 50, the ridge fitting portion 55 and the concave groove fitting portion 50 are brought into contact with each other (pressure contact). Good adhesion can be obtained with and, and the fitted state can be maintained more appropriately. When the diameter D1 at the position of the convex fitting portion 55 of the lid 40 is equal to or less than the diameter D2 at the position of the concave groove fitting portion 50 of the container body 20, the convex fitting portion 55 becomes the concave groove fitting portion 50. On the other hand, there is a problem that it cannot be fitted. The upper limit of the diameter D1 at the position of the convex strip fitting portion 55 of the lid body 40 is an appropriate distance that can be press-fitted into the container body 20 and can be fitted into the concave groove fitting portion 50.

Further, in the container body 20 and the lid 40, as shown in FIG. 2, the protrusion length L1 of the convex strip fitting portion 55 of the lid 40 is the depth L2 of the concave groove fitting portion 50 of the container body 20. It is composed of the above. The protruding length L1 of the ridge fitting portion 55 of the lid 40 corresponds to the distance between the outer peripheral portion 43a of the hanging portion 43 and the apex of the ridge fitting portion 55. Further, the depth L2 of the concave groove-shaped fitting portion 50 of the container body 20 corresponds to the distance between the upper inner peripheral wall portion 24c of the concave groove-shaped fitting portion 50 and the apex of the concave groove-shaped fitting portion 50.

When the protruding length L1 of the convex groove fitting portion 55 of the lid 40 is equal to or greater than the depth L2 of the concave groove fitting portion 50 of the container body 20, the convex fitting fitting portion 55 and the concave groove fitting portion 55 and the concave groove fitting portion The convex groove fitting portion 55 can be more reliably pressed against the concave groove fitting portion 50 at the time of fitting with the 50, and the adhesion between the convex groove fitting portion 55 and the concave groove fitting portion 50 can be achieved. Is improved. When the protruding length L1 of the convex groove fitting portion 55 of the lid 40 is less than the depth L2 of the concave groove fitting portion 50 of the container body 20, the convex fitting fitting portion 55 and the concave groove fitting portion 50 There is a risk that sufficient adhesion cannot be obtained. In particular, if the diameter D1 at the position of the convex strip fitting portion 55 of the lid body 40 is too small, the fitting of the container body 20 with the concave groove fitting portion 50 may be released and the lid may be easily disengaged.

The width and depth of the concave groove fitting portion 50 and the width and protruding length of the convex groove fitting portion 55 are such that the width of the convex groove fitting portion 55 is equal to or less than the width of the concave groove fitting portion 50 and the convex stripes. The protruding length of the fitting portion 55 is not particularly limited as long as it satisfies the depth of the concave groove-shaped fitting portion 50 or more and both can be appropriately fitted. For example, the width of the concave groove fitting portion 50 is about 1.5 to 5 mm, the depth is about 0.2 to 1.0 mm, the width of the ridge fitting portion 55 is about 1 to 4 mm, and the protruding length. Is about 0.2 to 1.0 mm. If the width and depth of the groove-shaped fitting portion 50 and the width and protrusion length of the ridge fitting portion 55 are not appropriate, the fitting may be easily released or sufficient adhesion may not be obtained. There is.

In the beverage container 10, when the hanging portion 43 of the lid 40 is inserted into the upper opening 21 of the container body 20 to close the lid, the upper opening 21 of the container body 20 is as shown in FIG. At least the lower side of the inner peripheral wall portion 24a between the concave groove-shaped fitting portions 50 is located inside the convex strip fitting portion 55 of the lid body 40. When closing the lid, the ridge fitting portion 55 is press-fitted into the inner peripheral wall portion 24a of the container body 20, and as shown in FIG. 4, the ridge fitting portion 55 is fitted in a concave groove shape. It is fitted by reaching the portion 50.

As described above, in the beverage container 10 of the present invention, the concave groove-shaped fitting portion 50 is formed on the inner peripheral wall portion 24a of the container main body 20, and the ridges are fitted on the outer peripheral portion 43a of the hanging portion 43 of the lid 40. The lid 40 is held in the inner fitting state with respect to the container body 20 by forming the portion 55 and fitting the convex fitting portion 55 to the concave groove fitting portion 50 when the lid is closed. Can be done. Therefore, it is easier to deal with an error in the moldability of the paper container body 20 as compared with the conventional outer fitting, and it is possible to suppress the influence of the molding accuracy at the time of closing the lid. Therefore, the adhesion of the fitting portion between the container body 20 and the lid 40 is improved, and the leakage of the contents can be effectively suppressed.

In addition, when the user drinks in this type of beverage container, the container is tilted by putting a mouth near the outer edge of the container. In the case of the conventional outer-fitting beverage container shown in FIG. 6, since the outer peripheral edge portion 142 of the lid body 140 is adhered to the outside of the outer winding edge portion 122 of the container body 120, the outside of the lid body 140 The end portion 142e of the peripheral edge portion 142 has a structure extending below the outer winding edge portion 122 of the container body 120. At this time, the user puts a mouth on the upper side of the outer peripheral edge portion 142 of the lid 140 and tilts the container, but if the contents leak out during this drinking, the contents are the outer peripheral edge portion of the lid body 140. It leaks from the end 142e side of 142. Therefore, the leaked contents may spill downward from the container and may be applied to the user.

On the other hand, in the beverage container 10 of the present invention, since the lid body 40 is internally fitted as shown in FIG. 2, the end portion 42e of the lid collar portion 42 of the lid body 40 is near the upper opening 21 of the container body 20. It has a structure that is located at and extends laterally from the outer winding edge portion 22. Then, at the time of drinking, the user puts his / her mouth in the vicinity of the lid portion 42 of the lid body 40 including the end portion 42e. Therefore, even if the contents leak when the container is tilted, the leaked contents do not come off from the mouth and there is no risk of spilling from the container.

As described above, in the beverage container with a lid of the present invention, the influence of the molding accuracy of the container body is suppressed and the adhesion between the container body and the lid body is improved. Can be covered. Therefore, it is a promising alternative to conventional beverage containers.

10 Beverage container with lid 20 Container body 21 Top opening 22 Outer winding edge 23 Container bottom 23s Bottom paperboard 24 Container body 24a Inner peripheral wall 24b Outer wall 24s Body paperboard 25 Outer ridge 28 Folding bottom paperboard Bent part 29 Folded part of body paperboard 30 Insulation part 35 Air layer 40 Lid body 41 Lid surface part 42, 42a Lid collar part 42e End of lid flange 43 Hanging lower part 43a Outer part of hanging part 45 Drinking mouth part 46 Finger hook Part 47 Broken part 48 Holding recess 50 Concave groove fitting part 55 Convex fitting part D1 Diameter at the position of the convex fitting part D2 Diameter at the position of the concave fitting part L1 Protruding length of the convex fitting part L2 Depth of grooved fitting

Claims (6)

A container body having a cup shape of an inverted truncated cone having an upper opening, and a concave groove-shaped fitting portion formed on an inner peripheral wall portion near the edge of the upper opening so as to circulate in parallel with the upper opening.
A lid flange portion that abuts on the edge portion of the upper opening of the container body and a lid surface portion that covers the upper opening via a hanging portion that enters the inner circumference of the upper opening from the lid flange portion are formed. The outer peripheral portion of the hanging portion is provided with a lid having a convex fitting portion that fits into the concave groove-shaped fitting portion when the lid is closed, and a spout portion is formed on the lid surface portion. A container for beverages with a lid. The beverage container with a lid according to claim 1, wherein the container body is made of paper or a material mainly composed of paper or plant fiber. The beverage container with a lid according to claim 1 or 2, wherein the drinking spout is formed in the vicinity of the hanging portion. The beverage container with a lid according to any one of claims 1 to 3, wherein a heat insulating portion is formed on the outside of the container body. The beverage container with a lid according to claim 4, wherein the heat insulating portion is formed by winding a heat insulating paper sleeve. The beverage container with a lid according to claim 5, wherein the heat insulating paper sleeve is embossed paper.

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