JP3154418U - Packaging container with closing material such as side dish and packaging body using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging container with a closure material such as sugar beet that can completely prevent leakage of juice when carrying or transporting even if it contains a lot of juice, etc. To do. A packaging container with a closure material such as sugar beet comprises a tray-like container body obtained by thermoforming a synthetic resin foam sheet and a closure material for the container body. The container body 20 includes a flange portion 25 around the upper edge, and a synthetic resin film 23 is laminated on at least the upper surface of the flange portion 25. The closing material 30 is made of a transparent resin material 35, and a material 34 that can be heat-sealed so as to be openable is laminated at least in a region that contacts the flange portion 25 of the container body 20 when the container body 20 is closed. Has been. [Selection] Figure 1

Description

  The present invention relates to a packaging container with a closure material such as sugar beet comprising a tray-like container body obtained by thermoforming a synthetic resin foam sheet and a closure material for the container body.

  A packaging container comprising a container body opened upward by thermoforming a foamed or non-foamed sheet of synthetic resin, and a closure material such as a lid or a wrap film for closing the upper open part of the container body, Are known.

  For example, Patent Document 1 describes a packaging container that uses a wrap film as a closing material, in which a convex part having a predetermined height is formed at the central part of the rear side wall of the container body. In a wrapping packaging container that allows wrapping film to be wrapped in a tent shape from above, the corners of the container body on both sides of the convex part are circled so that the wrapping film is less likely to wrinkle. An arc formed is described.

  Patent Document 2 describes a packaging container using a three-dimensionally shaped lid as a closing material, and after filling with processed food, the food does not dry even if it is put in a refrigerator. In order to maintain a moderate humidity, the inner part or the outer part is formed in the engaging part between the container body and the lid so that the sealing degree between the lid and the container body is increased. A container is described.

Utility Model Registration No. 3132638 Utility Model Registration No. 3126554

  When packaging food containing soup in a food packaging container and package using the same, when the container is carried by a person or transported by a vehicle, etc., the container body and the closure material such as a lid or wrap film are used together. It is required that the juice does not leak. In the packaging body in which the container body is wrapped with the wrap film as described in Patent Document 1, depending on how to wrap the container body with the wrap film, even if the juice can be prevented from leaking outside, the container body and It is not possible to completely prevent the juice from flowing into the wrap film. As described in Patent Document 2, a fitting portion is formed at the mating portion between the lid and the container main body, and the fitting portion is formed by increasing the sealing degree between the lid and the container main body. It is very difficult to completely prevent the juice from leaking out.

  In particular, when the container body is a so-called tray with a shallow depth compared to the area of the flat area, and the food to be stored contains a lot of juice like side dishes, the closure material prevents the juice from leaking out. It is not easy to form a package with a mark.

  The present invention has been made in view of the above-described circumstances, and even when a tray-like container body contains a prepared dish containing a lot of juice, it is possible to completely prevent the juice from leaking when being carried or transported. The present invention provides a packaging container with a closure material such as sugar beet, which can be attached to the container body so that it can be prevented, and can be easily opened when necessary, and a package using the same This is the issue.

  A packaging container with a closure material such as sugar beet according to the present invention is a packaging container with a closure material such as sugar beet comprising a tray-like container body obtained by thermoforming a synthetic resin foam sheet and a closure material for the container body. The container body has a flange portion around the upper edge, a synthetic resin film is laminated at least on the upper surface of the flange portion, and the closing material is made of a transparent resin material, And the material which can be heat-sealed so that opening is possible is laminated | stacked in the area | region which contact | abuts the said flange part of a container main body at least when the said container main body is closed.

  Further, a package for prepared foods according to the present invention is a package for prepared foods using the above-described packaging container with a closing material such as sugar beet, and the container body contains the prepared food, and the closing material is the above-mentioned In the region that is in contact with the flange portion of the container body, the material that can be heat-sealed so as to be opened is heated and heat-sealed in a liquid-tight state.

  In a packaging container with a closure material such as sugar beet and a packaging body according to the present invention, the container body is obtained by thermoforming a synthetic resin foam sheet, is lightweight and has the required strength, It is particularly suitable as a packaging container. In addition, the tray-like container body and the closure material can be heat-sealed at the flange part formed on the container body, and even when food containing a lot of juice such as sugar beet is stored, the container body and the closure material are closed. It is possible to completely prevent the juice from leaking from the mating portion with the material. Further, the closing material is made of a transparent resin material, and the purchaser can easily see the prepared foods stored in the container body.

  When taking out the prepared sugar beet, etc., the closure material is opened, that is, the closure material is peeled off from the heat-sealed portion and separated, but at least the heat-sealed portion of the container body, that is, the synthetic resin foam sheet is used. A synthetic resin film is laminated on the upper surface of the flange portion of the container body thus formed, and it is easy to open (peel off the closing material). The part is not taken away to the closing material side, and the upper surface of the flange portion after the closing material is removed maintains the original beautiful state. Further, a part of the finely divided foamed resin does not get mixed in with the prepared dishes.

  In the packaging container with a closure material such as sugar beet and the packaging body according to the present invention, the entire inner surface of the container body may be laminated with the above-described synthetic resin film. Thereby, it is possible to prevent the leakage of juice from the bottom of the container body, which may occur, and to ensure the moisture resistance of prepared foods such as stored foods. The entire outer surface of the container body may be laminated with the above-described synthetic resin film. Moreover, the container main body may have a partition formed in the accommodating portion.

  In a packaging container with a closure material such as sugar beet and a package according to the present invention, the closure material may be a three-dimensionally molded transparent resin material, a so-called lid, or a film or sheet made of a transparent resin material. There may be. In any case, at least a region of the closing material that contacts the flange portion of the container main body is laminated with a material that can be heat-sealed with the flange portion so as to be openable. The material that can be heat-sealed so as to be able to be opened may be laminated only in a region in contact with the flange portion or may be laminated over the entire surface of the closing material. In the former case, for example, by printing or the like, the material that can be heat-sealed so as to be able to be opened is laminated at a predetermined position in the film or sheet of the transparent resin material that constitutes the closing material. Can be formed. In the latter case, it is formed by applying or laminating the above-mentioned material that can be heat-sealed so that it can be opened in a liquid form, or in the form of a film or a sheet, to the transparent resin material that constitutes the closing material. Can do.

  In the packaging container with the closure material such as sugar beet and the packaging body according to the present invention, the material that can be heat-sealed so as to be openable may be a thermoplastic resin or a thermosetting resin having an appropriate thickness. When the container body is closed with a closing material, heat is applied to the openable heat-sealable material. The material functions as an adhesive by being melted by heat. Whether it can be sealed in a liquid-tight manner and can be opened depends mainly on the thickness of the material. In consideration of the age group of the person who is trying to open a package such as sugar beet according to the present invention, it is preferably laminated to an appropriate thickness. As an example, when the heat-sealable material is a polystyrene resin, a polypropylene resin, a polyester resin, or the like, a thickness of about 20 to 50 μm is preferable. If the thickness is too thin, satisfactory liquid tightness cannot be obtained, and if it is too thick, opening is difficult.

  In the above-described packaged items such as sugar beet according to the present invention, it is preferable that the taste and flavor of the contained sugar beet are retained for a long time. Therefore, in one aspect of a packaged item such as sugar beet according to the present invention, the container body and the closing material are made of a gas-impermeable material, and an inert gas is sealed inside. To do. Any inert gas may be used on condition that it is harmless to the human body, but nitrogen gas is most preferable from the viewpoint of cost and the like.

In a packaging container with a closure material such as sugar beet according to the present invention, a synthetic resin foam sheet for thermoforming a tray-like container body is an arbitrary synthetic resin foam conventionally used for molding this type of packaging container. A sheet can be used. Examples include a polystyrene resin foam sheet, a polypropylene resin foam sheet, a polyester resin foam sheet, and the like, and a polystyrene resin foam sheet is particularly preferable in terms of strength, moldability, and cost. Furthermore, as a synthetic resin film laminated | stacked on an above described synthetic resin foam sheet, the film which consists of polystyrene, high impact polystyrene, polyethylene, polyester etc. is mentioned. The lamination of the synthetic resin film may be performed not only on one side of the synthetic resin foam sheet but also on both sides.
Thermoforming of the synthetic resin foam sheet can be performed by, for example, vacuum forming, pressure forming, vacuum pressure forming, or the like.

  In addition, in the present invention, the side dishes to be packaged include, for example, rice, rice and side dishes, in addition to side dishes such as boiled dishes, delicacies, pickles, salads, and side dishes, Contains foods such as pasta. Especially, the packaging container by this invention is especially suitable with respect to the packaging of the foodstuff which contains much juice and moisture. In addition, packaging containers with closing materials such as side dishes include containers for lunch boxes.

  By using a packaging container with a closure material such as sugar beet according to the present invention, it is possible to obtain a tray-like packaging body having a closure material that is excellent in liquid tightness and can be opened.

The perspective view shown in the state which isolate | separated an example of the container main body which comprises the packaging container with closure materials, such as side dish by this invention, and a closure material. In the packaging container with a closure material such as sugar beet shown in FIG. 1, a plan view (FIG. 2 (a)) showing a state in which the closure material is attached to the container body, and an enlarged view along the line bb in FIG. 2 (a). FIG. 2B is a cross-sectional view. The perspective view shown in the state which isolate | separated the example of the container main body which comprises the packaging container with closure materials, such as side dish by this invention, and the closure material of another form. The figure which shows an example of the transparent resin material for making a closing material. The figure which shows the other example of the transparent resin material for making a closing material.

Hereinafter, with reference to the drawings, embodiments of a packaging container with a closure material such as sugar beet and a packaging body according to the present invention will be described.
1 and FIG. 2, the packaging container 10 is comprised from the container main body 20 and the cover body 30 which is a closure material. The container body 20 has a tray shape in which the depth of the accommodating portion 21 that accommodates sugar beet is relatively thin, and the synthetic resin foam sheet (for example, a polystyrene resin foam sheet) 22 is formed on the entire surface of the synthetic resin. It is produced by thermoforming a laminated body 24 in which films (for example, polystyrene resin films) 23 are laminated so that the synthetic resin film 23 side is the inside, that is, the bottom surface and the side surface side of the housing portion 21. The container body 20 is provided with a flange portion 25 extending in the horizontal direction around the upper edge in four laps. Further, in the illustrated example, an inner horizontal portion 26 is provided inside the flange portion 25. .

  The lid body 30 is made by three-dimensional molding of a transparent resin material 35 (for example, a transparent polystyrene resin sheet) by thermoforming or the like. A concave portion 31 whose tip abuts against the inner horizontal portion 26 of the container main body 20 when attached to the container main body 20, and an outer horizontal portion 32 that abuts the flange portion 25 of the container main body 20 following the outer periphery thereof. A skirt portion 33 is provided following the outer edge of the outer horizontal portion 32.

  As shown in FIG. 1, the back side of the outer horizontal portion 32, that is, the surface that contacts the flange portion 25 of the container body 20 when the lid body 30 is attached to the container body 20 can be opened. A material 34 that can be heat-sealed is laminated. Lamination may be performed by printing (part coat printing) or application, or by attaching a film-like material. As an example, the material 34 that can be heat-sealed so that it can be opened is a polystyrene-based resin material that melts at a temperature of about 100 ° C., and has a thickness of about 20 to 50 μm. Examples of the film include a VMX film (trade name) manufactured by J-Film, a CMPS film (trade name) manufactured by Tosero, or an NF-EP film (trade name) manufactured by Krillon Kasei Co., Ltd. As will be described later, the material 34 that can be heat-sealed so as to be openable may be laminated on the entire back surface of the lid 30.

  When using the packaging container 10 as a packaging body, side dishes etc. are accommodated in the accommodating part 21 of the container main body 20, and the cover body 30 is attached from there as shown in FIG. After attaching the lid 30, heat is applied to the openable heat-sealable material 34 laminated on the back surface of the outer horizontal portion 32 of the lid 30 by appropriate heating means, and the material 34 is melted by heat. To do. The melted material 34 functions as an adhesive, and the outer horizontal portion 32 of the lid body 30 and the flange portion 25 of the container body 20 are heat-sealed.

  The package 10 after heat-sealing, that is, the package according to the present invention, is that the tip of the recessed portion 31 of the lid 30 is in contact with the inner horizontal portion 26 of the container body 20, and the outer horizontal of the lid 30. The portion 32 and the flange portion 25 of the container body 20 are heat-sealed to be sealed in a liquid-tight manner. Therefore, even when the prepared sugar beet contains a lot of moisture (such as soup), the soup can be reliably prevented from leaking out of the packaging container 10.

  When taking out the prepared sugar beet etc. from the packaging container 10, the lid 30 is removed from the container main body 20. At this time, the above-mentioned heat-sealed portions are peeled from each other, but the heat-sealed portion side of the container body 20, that is, the upper surface of the flange portion 25 in the container body 20 made of the synthetic resin foam sheet 22 is The synthetic resin foam sheet 23 is covered with the synthetic resin film 23 laminated on the entire surface, and at the time of peeling, a part of the synthetic resin foam sheet 22 is not destroyed and taken away to the lid body 30 side. The original beautiful state of the upper surface of the flange portion 25 after the removal is maintained as it is. The lid 30 once removed can be used again as a lid.

  FIG. 3 shows a second embodiment of a packaging container with a closure material such as sugar beet according to the present invention. In this packaging container 10A, the container main body 20 is the same as that of the first embodiment shown in FIGS. 1 and 2, and the same reference numerals are given and description thereof is omitted. In the packaging container 10A, the closing material is different from that of the first form. Here, the closing material is not the three-dimensionally formed lid 30 but a flexible sheet 30A made of a transparent resin material 35 in the form of a film (or sheet). The material of the flexible sheet 30 </ b> A may be the same as or different from the resin material 35 constituting the lid body 30. The thickness of the flexible sheet 30A may be about 30 μm to 1000 μm.

  In the packaging container 10 </ b> A, the flexible sheet 30 </ b> A constituting the closing material is laminated with a material 34 that can be heat-sealed so as to be openable on the surface where the flexible sheet 30 </ b> A is in contact with the container body 20 flange 25. Has been. Also in this case, as described later, the material 34 may be laminated on the entire back surface of the flexible sheet 30A.

  When using the packaging container 10A to make a package, a prepared portion or the like is accommodated in the accommodating portion 21 of the container body 20, and the flexible sheet 30A is covered thereon. Thereafter, the flexible sheet 30A is heat-sealed to the flange portion 25 of the container body 20 by applying heat to the material 34 that can be heat-sealed so as to be opened by an appropriate heating means. 20 is sealed in a liquid-tight state by the flexible sheet 30A. Thereby, it becomes a top seal-like package. When taking out the prepared sugar beet etc. from the packaging container 10, the flexible sheet 30A is peeled off from the container body 20, and the peeled state at that time is the same as in the case of the first embodiment. The peel strength is preferably 2 to 10 N / 15 mm, and more preferably 3 to 6 N / 15 mm.

  Next, with reference to FIG. 4 and FIG. 5, the base material sheet 40 for making a closure material (the cover body 30, flexible sheet 30A) is demonstrated. As described above, regardless of whether the closing material is the lid 30 or the flexible sheet 30A, at least the closing material in the transparent resin material 35 can be opened in a region where the closing material abuts on the flange portion 25 of the container body 20. The material 34 that can be heat-sealed needs to be laminated. The example shown in FIG. 4 is an example thereof. Here, the material 34 is laminated only in a required region of the transparent resin material 35 in the base sheet 40. Here, when the closing material is the lid 30, the required region is a region where the lid 30 comes into contact with the flange portion 25 of the container body 20 after the three-dimensional molding, and the closing material is the flexible sheet 30 </ b> A. In this case, when the container main body 20 is sealed, the flexible sheet 30 </ b> A is a region that contacts the flange portion 25 of the container main body 20.

  In the case of the base sheet 40 in the form shown in FIG. 4, in accordance with the shape of the target container body 20, and in the case of forming the shape of the lid body 30, according to the shape of the lid body 30, It is necessary to set a position on the resin material 35 where the material 34 that can be heat-sealed so as to be able to be opened is applied, and a coating device having a complicated control mechanism is required.

  The base sheet 40 in the form shown in FIG. 5 eliminates the complexity, and the material 34 that can be heat-sealed so as to be openable is laminated on the entire surface of the transparent resin material 35. The material 34 may be laminated by a method in which the liquid material 34 is applied to the entire surface of the transparent resin material 35 using an apparatus such as a roll coater. The film-like material 34 is transparent as shown in the figure. A method of laminating the entire surface of the resin material 35 may be used. As described above, examples of this type of film include VMX film (trade name) manufactured by J-Film and CMPS film (trade name) manufactured by Tosero. The material 34 is wasted, but the closure is easy to manufacture.

  In the above description, a rectangular container body is shown as the tray-like container body 20 obtained by thermoforming a synthetic resin foam sheet. However, the outline shape of the container body is the above-described flange portion. It is optional on the condition that it is provided around, and may be circular or elliptical. The shape of the closing material (the lid 30 and the flexible sheet 30A) is designed accordingly.

  In the packaged foods such as sugar beet according to the present invention formed as described above, it is preferable that the taste and flavor of the stored sugar beet etc. are maintained for a long time. For this purpose, the container body 20 and the closing material 30 may be made of a gas-impermeable material, and an inert gas such as nitrogen gas may be sealed inside.

10, 10A ... packaging container,
20 ... the container body,
21 ... Accommodating section for storing prepared foods,
22 ... synthetic resin foam sheet,
23. Synthetic resin film,
24 ... laminate,
25 ... flange part,
30 ... a lid that is a closing material,
32 ... an outer horizontal portion that contacts the flange portion of the container body,
34 ... Material that can be heat-sealed so that it can be opened,
35 ... Transparent resin material forming a closing material,
40: A base sheet for forming a closing material.

Claims (6)

A packaging container with a closure material such as sugar beet comprising a tray-like container body obtained by thermoforming a synthetic resin foam sheet, and a closure material for the container body,
The container body has a flange portion around the upper edge, and a synthetic resin film is laminated on at least the upper surface of the flange portion,
The closing material is made of a transparent resin material, and at least the region that contacts the flange portion of the container body when the container body is closed is laminated with a material that can be heat-sealed so that it can be opened. A packaging container with a closure material such as sugar beet.   The packaging container with a closure material such as sugar beet according to claim 1, wherein the closure material is a three-dimensional molding of a transparent resin material.   2. A packaging container with a closure material such as sugar beet according to claim 1, wherein the closure material is a film or sheet made of a transparent resin material.   The packaging container with a closure material such as sugar beet according to claim 2 or 3, wherein the material that can be heat-sealed so as to be opened is laminated over the entire surface of the closure material.   It is a package body of the side dish etc. using the packaging container with closure materials, such as a side dish as described in any one of Claim 1 to 4, Comprising: A side dish etc. are accommodated in the said container main body, The said closure material is the said container. A package such as sugar beet, characterized in that, in the region in contact with the flange portion of the main body, the material that can be heat-sealed so as to be opened is heat-sealed in a liquid-tight state.   It is a package body of the side dish etc. of Claim 5, Comprising: The said container main body and closing material are made from the gas-impermeable material, and the inside is filled with inert gas, It is characterized by the above-mentioned. Packaged bodies, such as a side dish of Claim 5.

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