JPH11236028A - Container and package body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container which facilitates a disposal process and is friendly to nature and also recyclable. SOLUTION: A container main body 3 is formed by bonding film 2 to the internal face of a paper tray 1, thereby integrating them. Thus, by giving strength through the tray and by exhibiting water resistance through the film, an amount of use of the incombustible film material is reduced. The sidewall 6 of the tray is formed as a group of small pieces 9 made by folding, therefore it can surely be formed no matter how deep the container is. And by bonding the tray and film so as to be peelable from each other, the tray and the film are separated when disposed of. Therefore, the film can be disposed of as an incombustible material, and the tray, as a combustible material, and because they can be classified according to the kind of the material, recycling can also be made easy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container and a package, and more specifically, to exhibit strength and water resistance by adhering a film to an inner surface of a paper tray, and The present invention relates to easily disposable containers and packages.

[0002]

BACKGROUND OF THE INVENTION There are a wide variety of packaging forms, and an appropriate form is determined according to the type and content of an article to be packaged. For example, when the article to be packaged contains a liquid or the like and is required to have water resistance, and when it has a certain weight, strength is also required. In such a case, a relatively thick film material such as PVC is used as the packaging material, and deep drawing packaging is often performed. When the content is hot, there is also one molded with styrene foam in consideration of heat retention and heat insulation.

[0003] However, in the case of the above-mentioned one using a plastic film such as PVC, it is convenient to pay attention only to easy processing and to manufacture a package. After the package is opened and the packaged object is taken out, the package is discarded as garbage. Therefore, in consideration of such disposal, it is preferable that the above-mentioned non-combustible PVC or the like is not used as much as possible, or that even if it is used, the use amount is suppressed.

[0004] On the other hand, there is a paper container, but there is a problem in terms of water resistance. Further, a paper container obtained by laminating the surface thereof also has a problem in terms of sealing properties with the film covering the opening.

[0005] The present invention has been made in view of the above-mentioned conventional background, and an object of the present invention is to minimize the amount of a non-combustible film used, to have a certain level of strength, and to have a strong It is an object of the present invention to provide a package that can store even a heavy object to be packaged and has water resistance. It is another object of the present invention to provide a container and a package that can be easily disposed of and can be recycled easily and naturally.

[0006]

In order to achieve the above-mentioned object, in the container according to the present invention, a film is adhered to an inner surface of a paper tray and integrated to form a container main body. Is the same as the upper end of the tray (FIGS. 1, 2,
5, 7 and 8) or projecting outward (see FIGS. 4 and 6), the tray has a bottom surface and side walls, and a plurality of trays are radially connected to the bottom surface. The side wall of the tray is formed by bending and standing up a small piece of (1).

[0007] The term "rise" may be either firmly bent so that a fold is formed at the boundary between the bottom surface and the side wall, or may be gradually bent to curve the boundary. This applies to the other claims.

Further, in the package according to the present invention, a film is adhered to an inner surface of a paper tray and integrated to form a container body, and an upper end of the film is projected outward from an upper end of the tray. Forming a flange portion, the tray,
A lid member having a bottom surface and a side wall, forming a side wall of the tray by bending and standing up a plurality of small pieces radially connected to the bottom surface, and covering an upper opening of the container body; (See claim 5).

[0009] With this configuration, the film is bonded to the inner surface of the paper tray having an upper opening and integrated, so that water resistance can be exhibited by the film and strength can be exhibited by the paper tray. Becomes possible. As a result, even if the film is thin and has low strength, it can be used. Therefore, the amount of film consumption is reduced by the amount of paper used. In addition, since the side wall is formed by standing up a plurality of small pieces, even a deep container (one having a high side wall) or a complicated shape can be reliably formed.

When the lid is formed of a film material, the lid for closing the upper opening and the film forming the container body can be bonded by heat sealing. The sealing strength can be made sufficient and the airtightness can be maintained. Further, the sealing between the films can be performed more easily and more reliably than the bonding between the paper and the film.

Further, the plurality of small pieces may be formed by superposing a part of adjacent small pieces.
In this case, even if there is a dimensional error or a variation in assembling, the adjacent small pieces are arranged without a gap, so that the strength of the tray portion is increased, which is preferable. Also,
In view of the manufacturing process, for example, as described in the embodiment, it is only necessary to make a cut in a flat sheet of paper, which is preferable in that it can be easily performed. Note that it is preferable to fix the polymerized portion with an adhesive or the like because the strength is further increased.

In the above embodiment, a part of adjacent small pieces is polymerized and bonded.
The present invention is not limited to this, and the small pieces need not be integrated with an adhesive. That is, if the small pieces are bonded to the film, they are integrated without directly bonding the small pieces. Further, it is not always necessary to overlap a part of the small pieces as in the embodiment, and the cut is made not in a line but in, for example, a V-shape (see FIG. 10) so that the small pieces may overlap each other even when bent (started up). It may not be.

Further, the tray and the film may be releasably bonded to each other (claims 3 and 7). By doing so, the paper tray and the film made of resin or the like can be separated after use, so that separation and collection can be easily performed. Therefore, only the film is discarded as incombustibles, and the tray can be burned or used for recycling.

In this case, it is more preferable that at least a part of the lower surface of the outer peripheral edge of the film is configured to be exposed. In this way, the tray and the film can be easily separated by pulling the film upward while holding the exposed film portion.

As a method of releasably adhering,
A weak adhesive may be used, or the film may be placed on a tray using a device such as a molding device for forming a recess in a film mounted in a deep drawing type packaging device. By sucking the film from the tray side under a heating atmosphere in the state, the film can be thermally bonded to the inner surface of the tray in a state where the film matches the inner surface of the tray (confirmed by experiments). By adopting such a method, unlike the case where the films are melted and adhered to each other, since one of them is paper, a certain amount of adhesive force is exerted and the paper tray and the film are integrated but completely fused together. However, if a certain force or more is applied in the direction in which the film and the tray are separated from each other, the film and the tray are separated from each other and can be separated from each other (this has also been confirmed by experiments).

Further, the tray may further have a flange portion protruding outward at the upper end of the side wall, and the upper end of the film may be arranged on the upper surface of the flange portion. ). Such a configuration is more preferable because the strength of the tray increases.

[0017] In addition, the configuration in which at least a part of the lower surface of the outer peripheral edge of the film is exposed means that, as in the embodiment shown in FIG. Of course, even if the upper edge of the tray protrudes to the outer periphery, the position of the outer peripheral edge of the film may be larger than that of the peripheral edge by one or more times. Even if the position of the outer peripheral edge of the film is the same, the lower surface of the film can be exposed by removing (cutting out) a part of the outer peripheral edge of the tray, and other various structures can be adopted.

Various papers can be used for the tray, but if a relatively rigid material such as cardboard, cardboard, or corrugated cardboard is used,
Since the strength of the film is no longer required, it is possible to use a thin film, which results in a naturally friendly container or package. However, in the present invention, rigidity is not always required as a material of the paper itself, for example, by imparting strength to the film. The use of paper in part has the advantage of reducing the film consumption.

* Definition of terms The tray in the present invention is a concave container having a side wall formed upright around the bottom surface, and the angle of the side wall is arbitrary (some trays may be perpendicular to the bottom surface). (Including those inclined at a predetermined angle). The height of the side wall does not matter. That is, it is not limited to a relatively shallow container. Further, the concept includes a partially perforated state in which a through hole is formed in a part of the bottom surface or the side wall.

[0020]

FIG. 1 shows a first embodiment of a container according to the present invention.
Is shown. As shown in the figure, a container body 3 is formed by thermally bonding a film 2 to an inner surface of a paper tray 1 having an upper opening. This bonding is performed by sucking the film 2 from the side of the tray 1 under a heating atmosphere in a state where the sheet-like film 2 is put on the tray 1, so that the film 2 is brought into close contact with the inner surface of the tray 1. At the same time, when the film softened by the heating atmosphere is solidified, it is lightly heat-bonded to the inner surface of the tray 1 (this makes it easy to separate the tray 1 and the film 2 after use and to collect and separate each of them. Can be performed). However, the present invention may of course be implemented in other ways. If the tray and the film do not need to be separated, various methods such as applying a strong adhesive can be used.

Here, in the present invention, the tray 1 has a shape having a side wall 6 rising around the bottom surface 5. And
The tray 1 is formed by processing one sheet of paper. That is, as shown in FIG. 3, a plurality of cuts 8 are formed from the outer periphery to the center of the circular paper 7, thereby forming a plurality of strip-shaped small pieces 9. The cuts 8 extend radially from a central portion 7 'of the paper 7 having a predetermined area and shape. The small pieces 9 are connected to the central portion 7', and adjacent small pieces 9 are separated from each other. Also, the central part 7 '
Has the same shape as the bottom surface 5 of the tray 1 described above.

In this manner, the tip 9a of the adjacent small piece 9 is partially overlapped. Then, the overlapping portion is adhered with an adhesive or the like to form the side wall 6 of the tray 1 described above. The central portion 7 ′ of the paper 7 becomes the bottom surface 5 of the tray 1. In the present invention, the plurality of small pieces 9 are formed by the cuts 8 and are raised, so that a relatively deep container, that is, a container having a high side wall 6 can be easily manufactured. Also, the shape can be arbitrary.

The film 2 has a bottom surface 2a and side walls 2b according to the inner shape of the tray 1. And
The film 2 is formed from a single film by being sucked in a heated atmosphere as described above, and has no cuts unlike the tray 1. Therefore, even if a part of the side wall 6 of the tray 1 is perforated due to design requirements or due to poor bonding, the seamless film 2 is present, so that the liquid Even if it is poured, it does not leak out from the side or bottom of the container body 3 to the outside.

When cardboard or the like is used as the paper constituting the tray 1, the heat insulating and heat retaining effect is improved. Therefore, even if a hot liquid or the like is poured into the container body, for example, immediately after the pouring, There is no burn even if you hold the container body. Conversely, the temperature of the poured liquid can be maintained. The same can be said for the low temperature side.

On the other hand, when discarding after use, it is conceivable that the paper is burned as it is because a large amount of paper is used. However, by adjusting the adhesive strength between the tray 1 and the film 2 as described above, both can be burned. It is preferred to separate and discard. Further, by adjusting the strength of the adhesive between the small pieces 9, the film 2 and the tray 1 can be easily separated from each other by separating some of the small pieces. That is, in this embodiment, the upper end of the tray 1 and the film 2
It is difficult to pinch and separate the two, since the upper ends of the two pieces coincide with each other. However, if a part of the small piece is cut off, the film 2 is also exposed.
Can be more easily separated.

FIG. 4 shows a container according to a second embodiment of the present invention. As shown in the figure, since the basic configuration is the same as that of the first embodiment, the same reference numerals are given and the detailed description is omitted. The difference here is that a flange portion 2c protruding outward is formed on the outer peripheral edge of the side wall 2b of the film 2 '.

As described above, since the flange portion 2c is provided only on the film 2, the flange portion 2c of the film 2 is gripped when discarded, and the flange portion 2c is held inside while holding the tray 1 with the opposite hand. , The tray 1 and the film 2 are easily separated.

Further, as shown by a two-dot chain line in the figure, the lid 4 can be covered so as to cover the opening of the container body 3. At this time, if the lid 4 is also made of a film, the container body 3 is easily closed by heat sealing the flange portion 2c of the film 2 'and the outer peripheral edge of the upper film 4.
That is, by supplying a predetermined storage item into the container main body 3, a package is obtained. That is, by attaching the lid 4 in this way, the embodiment of the package according to the present invention is achieved. Note that the other configuration, operation, and effect are the same as those of the above-described embodiment, and thus detailed description thereof will be omitted.

FIG. 5 shows a third embodiment of the present invention. As shown in the figure, in this embodiment, the tray 1 'also has a flange portion 1a having an upper edge protruding outward.
Is provided. The flange 2c of the film 2 'is releasably adhered to the upper side of the flange 1a. Of course, other contact portions are also peelably adhered. Such a configuration is preferable because the strength is increased. Note that the other configurations, functions, and effects are the same as those of the above-described embodiments, and thus detailed description thereof is omitted.

In the type in which the flange portion 1a is also provided on the tray 1 ', as shown in FIG. 6, the flange 2c of the film 2' is larger than the outer peripheral edge of the flange portion 1a of the tray 1 '. The outer peripheral edge may be protruded. That is, the tray 1 'and the film 2' can be easily separated by grasping the protruding flange 2c of the film 2 'at the time of discarding while exerting a desired strength by the flange 1a of the tray 1'. That is because

Although not shown, the flange portion 2c of the film 2 'may be projected over the entire periphery, or one or a plurality of portions may be projected. Further, as shown in FIG.
a, 2c are made to coincide with each other, and a cutout is provided in a part (one or a plurality of places) of the outer periphery of the flange 1a of the tray 1 ', and the cutout is provided at the flange 2c of the film 2'. By allowing only the film to exist, the film portion may be gripped and the convenience of peeling may be improved.

In the above-mentioned container and package, the bottom is relatively shallow and the plane shape is circular. However, the present invention is not limited to this. For example, as shown in FIG. It may be relatively deep, such as a glass. Further, the planar shape is not limited to a circular shape, but may be an elliptical shape, a rectangular shape as shown in FIG. 8, or various other shapes.

Further, in each of the above-described embodiments and modifications, the side wall of the tray rises at a predetermined angle with respect to the bottom surface, and the boundary between both sides is firmly formed with a fold. The present invention is not limited to this, and as shown in FIG.
From the side wall 1b, and a portion 1d near the bottom surface of the side wall 1b may have a curved shape. Note that, in this example, the flange portion 1e that protrudes outward is provided at the upper end of the tray 1, but may not be provided as in the other embodiments.

FIG. 10 is a development view before the side wall 1b of the tray 1 is bent. In this example, since the side wall is relatively long (high), a plurality of band-shaped small pieces 9 extend radially around the circular central portion 7 '(becoming the bottom surface 1c), and the adjacent small pieces 9 are separated from each other. doing. Further, in this example, a glue allowance 9a is provided on the small piece 9,
The small pieces 9 adjacent to each other are adhered to each other by the glue margin 9a. Reference numeral 9b is bent to form a flange 1e.

In addition, the paper made of the tray may be made of paper alone, or may be, for example, a paper whose surface is coated with polyethylene or the like. And when it is formed only of paper, it has the advantage that it can be relatively easily separated and discarded from the film,
In the case of coating, there is an advantage that the strength is increased because the adhesion and the adhesion to the film are improved. Therefore, an appropriate material may be used according to the specifications.

The film to be bonded to the inner surface of the tray may be formed and bonded at the same time, for example, by suction under a heated atmosphere. However, the present invention is not limited to this. May be separately molded, and both may be bonded. However, the degree of adhesion between the film and the tray is higher when molding is performed simultaneously.

[0037]

As described above, in the container and the package according to the present invention, the film is adhered to the inner surface of the paper tray and the upper opening thereof is closed, so that the film which becomes non-combustible is formed. It is possible to store an object such as a rugged and relatively heavy object having a certain strength while keeping the amount of use as small as possible, and also exhibit water resistance. In addition, since the side wall of the tray is formed by raising a plurality of small pieces connected to the bottom surface, the tray can be reliably formed. Still further, according to the third and sixth aspects of the present invention, it is possible to provide a container / package that can be easily disposed of, and that can be recycled naturally.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a sectional view thereof.

FIG. 3 is a diagram illustrating a tray.

FIG. 4 is a diagram showing a second embodiment of the present invention.

FIG. 5 is a diagram showing a third embodiment of the present invention.

FIG. 6 is a sectional view showing a modification.

FIG. 7 is a perspective view showing another modification.

FIG. 8 is a perspective view showing still another modified example.

FIG. 9 is a front view showing still another modified example.

FIG. 10 is a development view of the tray of the example shown in FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tray 2 Film 3 Container main body 4 Lid 5 Bottom surface 6 Side wall 7 Paper 8 Cut 9 Small piece

Claims (8)

[Claims] 1. A container body is formed by bonding a film to an inner surface of a paper tray and integrally forming the container body, and an upper end of the film projects to the same or an outer side as an upper end of the tray, A container having a bottom surface and a side wall, wherein a plurality of small pieces radially connected to the bottom surface are bent to stand up to form the side wall of the tray. 2. The container according to claim 1, wherein the plurality of small pieces are formed by polymerizing a part of adjacent small pieces. 3. The container according to claim 1, wherein the tray and the film are detachably adhered to each other. 4. The tray according to claim 1, further comprising a flange protruding outward at an upper end of the side wall, wherein an upper end of the film is disposed on an upper surface of the flange. The container according to any one of claims 1 to 4. 5. A container body is formed by bonding a film to an inner surface of a paper tray to form a container body, and an upper end of the film is projected outward from an upper end of the tray to form a flange portion. Has a bottom surface and a side wall, forms a side wall of the tray by bending and rising a plurality of small pieces radially connected to the bottom surface of the tray, a lid member for covering an upper opening of the container body, A package, wherein the package is sealed by bonding to a flange portion of the film. 6. The container according to claim 5, wherein the plurality of small pieces are formed by partially polymerizing adjacent small pieces. 7. The package according to claim 5, wherein the tray and the film are releasably bonded to each other. 8. The tray according to claim 5, further comprising a flange portion protruding outward at an upper end of the side wall, wherein an upper end of the film is disposed on an upper surface of the flange portion. The package according to any one of the preceding claims.