JP3546192B2 - Manufacturing method of double containers for instant food etc. - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for producing a cup-shaped double container useful for containing instant foods and beverages.
[0002]
[Prior art]
Examples of cup-shaped containers for instant food and beverages include containers made of expanded resin such as expanded polystyrene and containers made of paper.
[0003]
[Problems to be solved by the invention]
Although a container made of foamed resin has excellent heat insulating properties, there is a problem that when printed directly on the outer surface of the container, the printing becomes unclear. In the case of a foamed resin container, a large number of containers of the same size are stacked in an empty state, and at the time of taking out the container in the automatic filling step of automatically taking out each container from the stacked container group and filling the food, Sometimes, two containers come into close contact with each other and overlap, making it difficult to separate them, resulting in stacking (or blocking), and there has been a problem that two containers may be taken at once. On the other hand, paper containers have a clear and visually appealing effect when printed on the outer surface (visual effect), and are recyclable and easy to incinerate. There is a problem that the cost is increased if a double structure is used to enhance the effect.
[0004]
The present invention has been made in order to solve such problems at once, and aims to provide a visual effect that clarifies printing and appeals to the visual sensation, as well as preventing stacking and heat insulation. An object of the present invention is to provide a method for producing a double container for instant foods and the like, which can easily produce an excellent double container.
[0005]
[Means for Solving the Problems]
The method for manufacturing a double container such as instant food of the present invention comprises a bottom portion, a body portion raised from the entire periphery of the bottom portion, and outwardly extending from the entire periphery of the upper end edge of the opening of the body portion, thereby forming an outer peripheral edge. A step of molding a container body made of a foamed resin having a downwardly bent flange, and a paperboard trunk cover body having a printed indication on the outer surface, the entire periphery of the outer periphery of the trunk of the container body. And temporarily moving the body cover in the axial direction of the container body until the upper end edge of the body cover comes into contact with the lower surface of the flange. And a bonding step.
In this case, the torso cover body is relatively moved in the axial direction of the container body until the upper end edge of the torso cover body abuts on the lower surface of the flange and adhered to the outer surface of the torso. The cover body can be peelably adhered to the outer surface of the trunk. Further, the total weight of the body cover can be made larger than the total weight of the container body.
[0006]
[Action]
When a plurality of double containers of the same size manufactured by the above method are stacked one on top of the other, the inner surface of the container body of the lower double container and the body cover body of the upper double container overlap, but the body cover Since the printed outer surface of the body is slippery by the printing ink layer, the upper double container is easy to pull out from the inner surface of the container body of the lower double container, and therefore, the occurrence of stacking when filling goods Can be prevented, and the problem of taking two pieces can be solved.
[0007]
In addition, since the body cover body on which the desired product display, pattern, color, etc. is printed is made of paperboard, clear printing is obtained, and the printing characteristics that are insufficient in the foam resin container body are compensated. It has excellent printing characteristics and exhibits a visually appealing effect. Furthermore, since the double-vessel container body made of foamed resin has excellent heat insulating properties, it is possible to make up for the insufficient heat insulating effect of the paperboard body cover.
[0008]
If the flange is formed so that the outer peripheral edge of the flange is bent downward, the flange has a rigid cross-sectional shape, and when sucking ramen juice or the like in the container, even if the mouth is attached to the flange, the mouth is scratched. There is an advantage that the mouth feels good without giving, and that it can be used to wrap the tab of the lid. However, when the body cover body is wound around the body of the container body having the flange having such a cross-sectional shape, the outer peripheral edge of the flange is directed downward so that the upper edge of the body cover body abuts along the lower surface of the flange. Is obstructed, so that the appearance of the external appearance of the torso cover body is exposed from between the lower surface of the flange and the upper end edge of the torso cover body.
Therefore, in order to finish the torso cover body in a favorable wrapping state in appearance, after temporarily wrapping the torso cover body around the outer surface of the torso of the container body, the upper edge of the torso cover body is attached to the lower surface of the flange. The body cover body is moved on the outer surface of the body in the axial direction of the container body until the body cover is brought into contact with the body cover body so as to be adhered. According to this, since there is no problem that the outer surface of the body cover is exposed from between the lower surface of the flange and the upper edge of the body cover, the appearance is finished in a wrapped state.
[0009]
When the paperboard body cover is peelably adhered to the outer surface of the body of the foam resin container body, the paperboard body cover can be peeled off from the foam resin container body at the time of disposal. Both can be easily separated, the body cover made of paperboard can be incinerated or recycled, and the container body made of foamed resin can be recycled. In this case, if the total weight of the body cover body made of paperboard and easy to incinerate or recycle is made larger than that of the container body made of foamed resin, the cost for incineration or recycle processing can be reduced. I can plan.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
A preferred embodiment for carrying out the manufacturing method of the present invention will be described with reference to the drawings. FIG. 1 is a partially cutaway cross-sectional view of a double container to which the present invention is applied, FIG. 2 is an explanatory view showing a manufacturing method of the present invention in the order of steps, and FIG. 3 is a cross-sectional view showing a stacked state of the double containers.
[0011]
As shown in FIG. 1, the double container to which the present invention is applied is composed of a cup-shaped container main body 1 and a paperboard body cover 2 attached around the entire outer surface of the container main body 1. The container body 1 is formed into a cup shape with a foamed resin such as expanded polystyrene. is there. The container body 1 in the illustrated example is formed in a tape-like cup shape having a circular bottom 4 and a body 5 rising upward from the entire circumference of the bottom 4 in an expanded manner. The flange portion 6 is integrally formed to protrude outward from the entire periphery of the upper edge of the opening of the body portion 5. The cross-sectional shape of the flange 6 enhances the rigidity of the flange 6 and, for example, gives a good mouth feel without damaging the mouth when sucking ramen juice or the like in the container. The outer peripheral edge 61 of the flange 6 is formed in a downwardly bent shape so that it can be used to prevent the tab 12a of the lid 12 closing the cover 3 from being rolled up. As shown in FIG. 1, the lower end portion 51 of the body 5 is formed into a slightly narrowed shape with a step, and a step 7 is provided annularly at the lower portion of the inner surface of the body 5 to protrude inward. I have.
[0012]
On the other hand, the trunk cover 2 made of paperboard is provided with a print 8 such as a desired product display, pattern, color design, etc. on the outer surface thereof, preferably on the entire outer surface thereof, and exhibits a horizontally long fan shape in a developed state. is there.
[0013]
Next, a method of attaching the body cover 2 over the entire outer surface of the body 5 of the container body 1 formed as described above will be described with reference to FIG. First, as shown in FIG. 2A, the container body 1 is formed as described above. Next, as shown in FIG. 2B, the body cover body 2 expanded in a horizontally long fan shape is temporarily wound around the outer surface of the body 5 from one side of the container body 1. When the trunk cover 2 is wound, the downwardly directed outer peripheral edge 61 of the flange 6 becomes an obstacle, so that the upper end edge 2a of the trunk cover 2 is separated from the lower surface 6a of the flange 6 as shown in FIG. Will remain. In this case, since the appearance is unsightly, after the temporary winding, the body cover 2 is further moved in the axial direction of the container body 1 so that the upper edge 2a of the body cover 2 abuts against the lower surface 6a of the flange 6. Move relative to X. Then, as shown in (d) of the figure, the upper end edge 2a of the body cover body 2 is in close contact with the lower surface 6a of the flange 6 and is covered by the downwardly directed outer peripheral edge 61 of the flange 6, so that it cannot be seen from the outside. A good appearance can be obtained.
[0014]
At this time, it is desirable to attach the body cover 2 to the outer surface of the body 5 of the container body 1 so that the body cover 1 can be easily peeled off, since the container body 1 and the body cover 2 can be easily separated at the time of disposal. . For this purpose, the body cover 2 is scattered and adhered to the outer surface of the body 5 of the container body 1 with an adhesive, or the overlap between the winding end edges 2b and 2d of the body cover 2 is made. With an adhesive, or only one or two or more of the winding end edge 2b or the upper and lower edges 2a, 2c of the body cover 2 are bonded with an adhesive. Attached so that it can be peeled off. Further, when comparing the total weight of the paperboard body cover 2 with that of the container body 1 made of foamed resin, the total weight of the former, which is easy to incinerate and recycle by paperboard, is larger than that of the latter. It is preferable to set so that In the illustrated example, the lower edge 2c of the body cover 2 is set to be slightly higher than the outer bottom surface of the bottom 4 of the container body 1. However, the lower edge 2c of the body cover 2 is replaced with this. 2c is set to be flush with the outer bottom surface of the bottom portion 4 of the container body 1, or the lower end edge 2c of the body cover body 2 is set to a position that hangs slightly below the outer bottom surface of the bottom portion 4 of the container body 1. It is optional.
[0015]
Further, in order to make it easier to grasp the body cover body 2 when the body cover body 2 is peeled off from the container body 1, as shown in FIG. As shown by a two-dot chain line, a knob portion 9 is provided at an appropriate position such as an upper portion of the winding end edge 2b or an upper and lower middle portion. By gripping the knob 9, the bonded portion bonded between the overlapping surfaces of the winding end edge 2b and the winding start edge 2d of the body cover 2 can be peeled off. The knob portion 9 is provided in a tongue shape as shown in FIG. 1, or two cuts 10, 10 are formed in the lower edge 2 c or the upper edge 2 a of the body cover body 2 as shown in FIG. The formation of the knob 9 between the cuts 10 is optional. In this case, a separating line 11 such as a perforation may be provided as shown in FIG. At this time, it is preferable to provide the separating line 11 in association with the knob 9 so that the trunk cover 2 can be broken along the separating line 11 by the action of pinching and pulling the knob 9.
[0016]
The double container manufactured as described above is clear because the printing is applied to the outer surface of the paperboard body cover 2, and the outer surface of the printed body cover 2 is Because the printing ink layer makes the container more slippery, stacking can be prevented even when a large number of the double containers are stacked empty when the products are filled, and the single containers can be smoothly removed. In addition, when this double container is used for a container for instant food such as instant noodles that are unraveled with hot water, hot water is poured when edible, but since the container body 1 is made of a foamed resin having excellent heat insulating properties, Due to the heat insulating effect of the container body 1, the heat of the contents can be reduced from being transmitted to the paperboard body cover 2, and the paperboard body cover 2, which lacks the heat insulating effect, is not hot and is hand-held. Easy to hold.
[0017]
As described above, a large number of the double containers are stacked up and down in a tape-fitting state in an empty state at the time of filling the product, but a stepped portion is formed at the lower portion of the inner surface of the body 5 of the container body 1. As shown in FIG. 3, the lower edge 2c of the body cover body 2 of the upper double container abuts on the step 7 so that the upper double container is It is possible to prevent the tape from being more deeply fitted into the heavy container and to be firmly fitted into the container, and in this regard, the above-described individual take-out can be performed even more smoothly.
[0018]
When the double container is discarded after being used, the body cover 2 can be easily separated from the body 1 by peeling the body cover 2 from the body 5 of the container body 1. The body cover 2 made of plastic can be incinerated or recycled, and the container body 1 made of foamed resin can be recycled. In this case, since the total weight of the body cover body 2 made of paperboard and easy to incinerate and recycle is made larger than that of the container body 1 made of foamed resin, incineration and recycling can be performed easily and at low cost. It can be carried out.
[0019]
In addition, the container body 1 is not limited to the one formed into a cup shape having a circular cross section, but may be formed into a rectangular cross section, a square cross section, another polygonal cross section, or an elliptical cross section. The same applies.
[0020]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, while having the effect which makes printing clear and appeal visually, a double container excellent in stacking prevention and heat insulation effect can be easily manufactured. In particular, it is possible to attach the cardboard body cover body to the foam resin container body with a flange with a cross-sectional shape with the outer peripheral edge facing down to increase rigidity and make it feel better. There is an advantage that you can.
[Brief description of the drawings]
FIG. 1 is a partially cutaway sectional view of a double container to which the present invention is applied.
FIG. 2 is an explanatory view showing a manufacturing method of the present invention in the order of steps.
FIG. 3 is a cross-sectional view showing the double containers of FIG. 1 in a stacked state.
4 is a partial cross-sectional view showing a tab of a lid that covers an upper opening of the double container of FIG. 1 in a rolled state.
FIG. 5 is a partial front view of a trunk cover showing another embodiment.
FIG. 6 is a partial front view of a trunk cover body showing still another embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Container main body 2 Body cover body 4 Bottom part 5 Body part 6 Flange 61 Flange outer peripheral edge 8 Printing

Claims (3)

A foam resin container having a bottom portion, a body portion raised from the entire circumference of the bottom portion, and a flange that projects outward from the entire circumference of the upper end edge of the opening of the body portion and has an outer peripheral edge bent downward. A step of molding the main body, a step of temporarily winding a paperboard body cover body having a printed indication on the outer surface thereof over the entire outer surface of the body of the container body, and thereafter, a step of forming the body cover body Moving the body cover body relative to the container body in the axial direction until the upper end edge abuts on the lower surface of the flange, and bonding the body cover body to the body outer surface. Manufacturing method of double container. 2. The step of bonding the body cover body to the outer surface of the body by relatively moving the body cover body in the axial direction of the container body until the upper edge of the body cover body contacts the lower surface of the flange according to claim 1. 2. The method for producing a double container for instant foods and the like according to claim 1, wherein a part cover body is releasably adhered to the outer surface of the trunk part. 3. The method according to claim 2, wherein the total weight of the body cover is greater than the total weight of the container body.

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