JP5843193B2 - Synthetic resin cup container - Google Patents

Description

The present invention relates to a synthetic resin cup container.

The cup container is used as a simple disposable container for many uses including food and drink such as coffee, juice, and yogurt. (For example, see Patent Document 1)
FIG. 7 is a half longitudinal front view showing a typical example of a conventional cup container.
The cup container 101 has a bottomed cylindrical shape as a whole, with a bottom 106 connected to the lower end of the cylindrical side peripheral wall 103, and a flange 116 around the upper end of the side peripheral wall 103. is there.

This type of cup container is usually filled with a liquid such as coffee, and then the upper end opening is sealed by adhering the peripheral edge of the sealing film 119 to the upper end surface of the flange 116 as shown in FIG. Used.
Then, after the seal film 119 is peeled off, the content liquid is drunk directly from the opening or by inserting a straw into the seal film 119.
Also, cup container products filled with this type of content liquid can be sold with the content liquid heated in a heater or microwave oven with the top opening sealed as described above, or the user himself can May be heated for drinking.

JP 2010-195440 A

Here, as described above, when the cup container product filled with the content liquid is heated with a heater or a microwave oven in a state where the upper end opening is sealed, the inside of the container is in a pressurized state, and can be drunk. There is a safety problem that the content liquid is ejected when the sealing film is peeled off or when a straw is pierced into the sealing film.
In addition, since the container is deformed in an expanded state, there is a problem that the user feels uneasy and the merchantability as a cup container product is reduced.

In view of this, the present invention has a technical problem in a cup-shaped container that heats and supplies a liquid content with a heater or a microwave oven in a state where the upper end opening is sealed, and suppresses an increase in pressure inside the container due to heating. Is.

The main structure of the present invention for solving the above problems is a cup container made of synthetic resin.
It has two members, a cup body and a flange body,
The cup body is a bottomed cylindrical member with a bottom portion connected to the lower end portion of the cylindrical side peripheral wall,
Flange body, a flange and circumferentially on the outer flange-like on the upper end of the cylindrical fitting tube piece, Ri member der forming the gas release groove toward the outer periphery direction from the base end portion to the lower surface of the flange, the flange The upper end opening of the body is sealed with the sealing film so that the peripheral edge of the sealing film adheres to the upper end surface of the flange,
The fitting cylinder piece is fitted and assembled in a liquid-tight manner to the upper end portion of the side peripheral wall, and the flange body is detachably attached to the upper end portion of the cup body.

The cup container having the above structure is generally sold as a cup container product that is filled with the content liquid and the upper end opening of the flange body is sealed with a seal film.
With the above configuration, when the pressure inside the container rises when the content liquid is heated with a heater or a microwave oven, the side peripheral wall of the cup body expands, and this expansion fits into the upper end of the side peripheral wall. A gap is formed between the fitting cylinder piece of the flange body and the side peripheral wall, and the gas inside the container is passed through a gas vent groove formed in the gap and the lower surface of the flange from the base end toward the outer peripheral edge. It is possible to escape, and the increase in pressure inside the container can be effectively suppressed.

Further, in the cup container having the above configuration, the flange of the cup body is similar to the flange of the conventional cup container, the part for sealing, the part that functions to suppress the deformation of the upper end opening, and the inside of the content filling device. Function as a part used for abutting a support claw piece supporting the posture of the cup container in a device for supplying cup containers, and also a part used for holding on a retainer for conveyance in a filling device Demonstrate.
And when drinking it, you can remove the flange body and drink the content liquid from the upper end opening of the side peripheral wall of the cup body. be able to.

In addition, in cup container products filled with content liquid such as coffee, it is used by sealing the upper end opening of the flange body with a seal film as described above.
After removing the flange body and drinking a part of the liquid content, you can rest assured that the cup container containing the remaining content liquid can be reattached to the cup body by re-attaching the flange body with the top opening sealed with a seal film. It can be stored and even carried.
In addition, in the cup container product of the above configuration filled with the content liquid, the range extending from the peripheral part of the seal film covering the upper end opening of the flange body to the side peripheral wall of the cup body is covered with a shrink film, and a safer state It is preferable to sell at.

  Still another configuration of the present invention is the main configuration described above, wherein a circumferential protrusion is provided on the inner peripheral surface of the upper end of the side peripheral wall, and a circumferential groove is provided on the outer peripheral surface of the upper end of the fitting tube piece. It is said that it is set as the structure which achieves the liquid-tight insertion assembly | attachment of the fitting cylinder piece to the upper end part of a side peripheral wall by fitting of a circumferential groove.

The above configuration is an example of a liquid-tight seal method between the fitting cylinder piece and the side peripheral wall.
The liquid-tight seal between the fitting cylinder piece and the side peripheral wall, that is, the liquid-tight fitting assembly of the cup body and the flange body is basically performed by setting the outer peripheral surface of the fitting cylindrical piece to the inner peripheral surface of the side peripheral wall. It can be achieved by inscribed in close contact,
With the above configuration, the liquid-tight sealing function can be more reliably exhibited by fitting the circumferential protrusion into the circumferential groove in a fitting manner.

Still another configuration of the present invention is the above main configuration,
The circumferential ridge and circumferentially on the upper end inner peripheral surface of the side wall, a circumferential groove on the outer peripheral surface of the fitting tube pieces are circumferentially provided, by fitting these peripheral ridges and peripheral grooves, locking function is exhibited It is said to have a configuration.

The above configuration relates to a locking function for preventing the flange body from being pulled out by a force acting upward on the flange in a cup container supply device or the like.
In addition, the circumferential protrusion formed on the inner peripheral surface of the upper end portion of the cup body exerts the effect as a peripheral rib, and it is possible to suppress deformation of the upper end opening of the cup body even after the flange main body is removed. Become.
In addition, according to the fitting of the circumferential protrusion and the circumferential groove, it is possible to exhibit the above-described locking function and the sealing function described above.

  According to still another configuration of the present invention, in the main configuration described above, the upper end portion of the side peripheral wall and the fitting cylinder piece are screwed and assembled.

According to the above configuration, the locking function for preventing the flange body from being pulled out by the force acting on the flange by attaching the flange body more firmly to the cup body using the screw assembly mechanism. causes more highly exhibited, it is possible to remove more easily the rigidly-mounted flange body threadably de manipulation.
In the above configuration, it is preferable to provide a concave and convex pattern such as a knurling for preventing slipping on the flange so that screwing and unscrewing operations can be easily performed.

Since the synthetic resin cup container of the present invention has the above-described configuration, the following effects are exhibited.
That is, in the cup container having the main configuration of the present invention, the cup container is constituted by two members of the flange body in which the cup body and the upper end opening are sealed with the seal film, and the gas is formed on the lower surface of the flange of the flange body. By forming a draft groove,
When the liquid content is heated with a heater or microwave oven, the side wall of the container body expands even when the pressure inside the sealed container rises, and this expansion causes a flange that fits into the upper end of the side wall A gap is formed between the fitting cylinder piece of the body and the side peripheral wall, and the gas inside the container escapes through a gas vent groove formed in the gap and the lower surface of the flange from the base end toward the outer peripheral edge. The pressure inside the container can be effectively suppressed,
It is possible to provide a cup container that can be used safely and safely for the purpose of heating or selling or using the content liquid.

In addition, when drinking, the flange body can be removed and the content liquid can be drunk from the upper end opening of the side wall of the cup body. it can.

It is the perspective view which looked at one Example of the cup container of this invention from diagonally downward. In the cup container of FIG. 1, it is the perspective view which looked at the state which removed the flange body from the cup main body. (A) is a perspective view of a state where a part of the upper end of the cup container of FIG. 1 is vertically cut and the main part is enlarged, and (b) is the same as (a) when the container is in a pressurized state. It is a perspective view shown in FIG. It is the perspective view which expanded the principal part about the flange body in FIG. 2, and was seen from diagonally downward. It is a half vertical front view of the cup container of FIG. It is the perspective view which looked at the other example of the fitting aspect of the cup main body and flange body of the cup container of this invention in the state similar to Fig.3 (a). It is a half vertical front view of the conventional example of a cup container.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of the invention will be described along examples with reference to the drawings.
1 to 5 are views for explaining an embodiment of the synthetic resin cup container of the present invention. FIG. 1 is a perspective view, and FIG. 2 is a perspective view showing a state in which the flange body 11 is detached from the cup body 2. 3 is a perspective view in which the upper end portion is partially longitudinally cut to enlarge the main part, FIG. 4 is a perspective view of the flange body in FIG. 2, and FIG.
3 and 5 show a state in which the peripheral edge of the seal film 19 is bonded to the upper end surface of the flange 16 of the flange body 11, and the upper end opening of the flange body 11 is sealed with the seal film 19. Yes.

The cup container 1 of the present embodiment is made of polypropylene (PP) resin, has a cylindrical side peripheral wall 3 that gradually decreases in diameter downward, and has a cup body 2 that is a member having a bottom portion 6 connected to the lower end portion. , as well as circumferentially of the flange 16 to the outer flange-like low density polyethylene (LDPE) top end of the cylindrical fitting tube piece 12 that gradually decreases in diameter downward is made of resin, the top opening by sealing a film to be described later It is comprised from two members of the flange body 11 which is the member which sealed .
A gas vent groove 16g is formed in an engraved shape on the lower surface of the flange 16 from the base end portion of the flange 16 toward the outer peripheral edge.

As shown in detail in FIG. 3 (a), a pair of peripheral protrusions 4, 4 a are formed on the inner peripheral surface and the outer peripheral surface at the upper end of the side peripheral wall 3 of the cup body 2. A pair of circumferential protrusions 5 and 5a are also provided slightly below 4a.
In addition, circumferential grooves 14 are respectively provided at height positions on the outer peripheral surface of the fitting cylinder piece 12 of the flange body 11 facing the peripheral protrusions 4 and 5 formed on the inner peripheral surface of the side peripheral wall 3 described above. And a circumferential groove 15 is provided.

Then, as shown in FIG. 3 or FIG. 5, the flange body 11 is fitted into the upper end portion of the side peripheral wall 3 of the cup body 2 with the circumferential protrusions 4, 5 fitted in the circumferential grooves 14, 15. It is fixed to the assembly.
By fitting the circumferential protrusions 4 and 5 and the circumferential grooves 14 and 15, the flange body 11 is prevented from coming out of the cup body 2 due to the force acting on the flange 16 in the supply device or the like of the cup container 1. The locking function is demonstrated.

Here, the locking function using the fitting of the circumferential protrusions 4 and 5 and the circumferential grooves 14 and 15 is as follows.
Assuming that the flange body 11 is firmly attached to the supply device or the like so as to prevent the flange body 11 from coming off due to the force acting on the supply device, the flange body 11 can be easily attached and detached by hand. It needs to be adjusted as gently as possible,
The strength of such a locking function can be adjusted by the cross-sectional shape, the number of arrangement, or the arrangement position of the circumferential ridge or circumferential groove.

Of course, the locking function is not limited to the combination of the circumferential ridge and the circumferential groove as described above, and the direction in which the force is applied in the supply device and the direction in which the force is applied in attaching and detaching the flange body by hand. For example, various locking mechanisms such as combining a protrusion and a protrusion to form a crossing locking portion can be employed.
Incidentally, in the supply device or the like, a force that simply pulls the flange body 11 upward through the flange 16 acts, whereas in the removal operation of the flange body 11 by hand, the flange body 11 is rotated or Since the force is applied while rolling, by constituting the locking function in consideration of the difference of the action of the force, the pulling resistance in the supply device of the flange body 11 and the easy attachment / detachment of the flange body 11 in use. Can be made compatible.

  Next, in the cup container 1 of the present embodiment, the circumferential protrusion 4 provided around the upper end inner peripheral surface of the side peripheral wall 3 and the circumferential groove 14 provided around the upper end outer peripheral surface of the fitting cylinder piece 12. The fitting cylinder piece 12 is assembled in a liquid-tight manner into the upper end portion of the side peripheral wall 3, that is, a liquid-tight seal between the cup body 2 and the flange body 11 is achieved. .

  Here, FIG. 3B shows the flange body 11 as shown in FIG. 5 after filling the cup container 1 composed of the two members of the cup body 2 and the flange body 11 of this embodiment with the content liquid such as coffee. A cup container product in which the upper end opening of the container is sealed with a seal film 19 is prepared, the content liquid is heated with a heater, and the state when the inside of the container is in a pressurized state is shown in the same manner as in FIG. FIG.

As shown in FIG. 3 (b), the side peripheral wall 3 of the cup body 2 expands due to the increase in internal pressure, and the expansion cylinder piece 12 and the side of the flange body 11 that fits into the upper end of the side peripheral wall 3 due to this expansion. A gap S is formed between the peripheral walls 3 and between the peripheral ridges 4 and the peripheral grooves 14. As shown by the two-dot chain line arrow in FIG. The gas inside the container can be released through the formed gas vent groove 16g, and the increase in pressure inside the container can be effectively suppressed.
In the present embodiment, the gas vent groove 16g is formed at one location, but the cross-sectional shape and the number of formed gas vent grooves 16g can be appropriately selected.
In consideration of gas venting, the gas vent groove 16g can be extended from the base end portion of the flange 16 to the upper end portion of the outer peripheral surface of the fitting cylinder piece 12 as necessary.

Next, it demonstrates in relation to the attachment / detachment operation of the flange body 11 at the time of drinking.
When drinking, the flange body 11 is removed as shown in FIG. 2 as if it is swung by hand, and it is difficult to drink due to the flange from the upper end opening of the side peripheral wall 3 of the cup body 2 without the flange 16. , You can drink the contents smoothly without a sense of incongruity.

  Further, on the outer peripheral surface of the side peripheral wall 3 of the cup body 2, there are a peripheral protrusion 4a and a peripheral protrusion 5a at positions facing the peripheral protrusion 4 and the peripheral protrusion 5, respectively, arranged on the inner peripheral surface. The peripheral ribs 4 and 4a and the peripheral ribs 5 and 5a exert the effect of a peripheral rib, and when used for drinking, the flange body 11 is removed as shown in FIG. At the same time, deformation of the upper end opening of the cup body 2 can be suppressed, and the cup body 2 can be held in a stable posture.

  Further, after removing the flange body 11 and drinking a part of the content liquid, the flange body 11 whose upper end opening is sealed with the sealing film 19 is attached to the upper end portion of the cup body 2 again, thereby remaining contents. The cup container 1 containing the liquid can be stored and transported with peace of mind.

  Next, FIG. 6 shows another example of a fitting mode between the cup body 2 and the flange body 11, and an example in which the cup body 2 and the flange body 11 are fitted and assembled by screwing. It is the perspective view which looked at the state which partly cut the upper end part of the cup container 1 like the main part, and expanded the principal part. Except for the formed points, the other configuration is the same as that of the cup container shown in FIGS.

A screw 7 is disposed on the inner peripheral surface of the side peripheral wall 3 of the cup body 2. A pair of peripheral ridges 4, 4 a are provided at the upper end of the side peripheral wall 3 on the inner peripheral surface and the outer peripheral surface, and a peripheral ridge 5 a is provided at a position below the screw 7 on the outer peripheral surface.
The flange body 11 is provided with a screw groove 17 that is screwed into the screw thread 7 and a peripheral groove 14 that is fitted into the peripheral protrusion 4 .
The flange body 11 can be firmly attached to the upper end portion of the cup body 2 so that it cannot be pulled out by screwing the screw 7 and the screw groove 17, and the firmly assembled flange body 11 can be screwed off. It can be easily removed by operation.
Further, a knurled which is an example of the uneven pattern 18 for preventing slipping is formed on the side peripheral surface of the flange 16 so that the above-described screwing and screwing operations can be easily performed.
Even when the cup body 2 and the flange body 11 are fitted and assembled by screwing as described above, when the inside of the container is in a pressurized state, the gap between the screw 7 and the screw groove 17 and the expansion of the side peripheral wall 3 are accompanied. Gas inside the container can be released through the gap S formed between the circumferential protrusion 4 and the circumferential groove 14 and the gas vent groove 16g.

As mentioned above, although embodiment of this invention and its effect were demonstrated along the Example, this invention is not limited to this Example.
In the above embodiment, the cup body 2 is made of PP resin and the flange body 11 is made of LDPE resin. Of course, the sealing performance of the cup body 2 and the flange body 11, the sealing performance of the seal film 19, the rigidity as a container, etc. In consideration, other synthetic resins such as polystyrene resin and polyethylene terephthalate (PET) resin can be used.

Further, the liquid-tight sealing method of the side peripheral wall 3 and the fitting cylinder piece 12 and the fitting method of the cup body 2 and the flange body 11 are not particularly limited, and the pull-out resistance and the attachment / detachment of the flange body 11 are not limited. In consideration of easiness, etc., it can be appropriately selected from various sealing methods and fitting methods.

As described above, the cup container of the present invention is constituted by two members of the cup body and the flange body, and by forming a gas vent groove in the flange, the rise in pressure inside the container is effectively suppressed, It can be used safely and with peace of mind, and it can be expected to be used in a wide range of applications where the liquid content is heated for use.

DESCRIPTION OF SYMBOLS 1; Cup container 2; Cup main body 3; Side peripheral wall 4, 5; Peripheral protrusion 4a, 5a; Peripheral protrusion 6; Bottom part 7; Screw 11; Flange body 12; Flange 16g; gas vent groove 17; screw groove 18; uneven pattern (knurl)
19; seal film S; gap 101; cup container 103; side peripheral wall 106; bottom 116; flange 119;

Claims (5)

It has two members, a cup body (2) and a flange body (11). The cup body (2) has a bottomed cylindrical shape with a bottom (6) connected to the lower end of the cylindrical side wall (3). a member that the flange member (11) is a flange (16) and circumferentially on the outer flange-like on the upper end of the cylindrical fitting tube piece (12), the lower surface of the flange (16), the flange ( member der forming the gas release groove (16g) toward the outer periphery direction from the proximal end of the 16) is, the upper end opening of the flange body (11), wherein the peripheral edge of the sealing film (19) flanges Adhering to the upper end surface of (16), it is sealed with the sealing film (19), and the fitting cylinder piece (12) is fitted and assembled in a liquid-tight manner to the upper end portion of the side peripheral wall (3). A synthetic resin cup container, wherein the flange body (11) is detachably attached to an upper end portion of the cup body (2).
Circumferential ridges are provided on the inner peripheral surface of the upper end of the side peripheral wall (3), and a circumferential groove is provided on the outer peripheral surface of the upper end of the fitting tube piece (12). The synthetic resin cup container according to claim 1, wherein a liquid-tight fitting assembly of the fitting cylinder piece (12) to the upper end portion of the side peripheral wall (3) is achieved. The circumferential ridge on the upper end inner peripheral surface of the side wall (3) peripheral to set, and circumferentially of the peripheral groove on the outer peripheral surface of the fitting tube piece (12), by engagement of the circumferential projection and the circumferential groove, the engagement plastic cup container according to claim 1, wherein where the structure prevention function is exhibited.
The synthetic resin cup container according to claim 1, 2, or 3, wherein the upper end portion of the side peripheral wall (3) and the fitting cylinder piece (12) are screwed together. The synthetic resin cup container according to claim 4, wherein an uneven pattern for preventing slippage is provided on the flange (16).

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