JP2012066830A - Simultaneously opening carton of hermetic container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging container in which a hermetic container storing food is not broken due to drop-down and external pressure during transportation, has no possibility of contaminating the inside of a microwave oven caused by breakage by an increase in pressure of the inside of the container and the bumping of a liquid juice when heated in the microwave oven, and a hot container after cooking can be taken out without bringing into direct contact with the container.SOLUTION: A simultaneously opening carton of a hermetic container is characterized in that, in the carton formed with at least a front face panel, a side face panel, a top face panel, a bottom face panel and a back face panel, and a hermetic container in which a container body and a lid material are sealed is stored, an opening exists on the top face panel or at least on a region where the front face panel and the top face panel are connected, and the back face of the top face panel and the surface of the lid material are stuck and fixed.

Description

  The present invention relates to a carton in which a sealed container sealed in a carton is accommodated, and the lid of the sealed container can be opened simultaneously with the opening of the carton. More particularly, the present invention relates to a carton that can be heated in a microwave oven.

  In recent years, cooked or semi-cooked foods stored in packaging bags, plastic trays, cups, and the like are often eaten by heating in a microwave oven. Microwave ovens are widely used in general households as appliances for heating and cooking food.

  Plastic trays and cups in which cooked or semi-cooked foods are hermetically sealed with a lid material have problems such as being dropped due to a drop during transportation or factors due to external pressure, and the contents leaking. For this reason, in order to prevent these damages, they are packaged on the outside with cartons. At the same time, the display effect of merchandise at stores is increasing.

  When heating food, the sealed container becomes hot as the temperature of the contents rises, and it is difficult to hold the packaging container with bare hands and there is a risk of burns. In addition, when heating food in a sealed package in a microwave oven, if it remains in a sealed system, the internal pressure in the system rises due to the steam generated by the heating, and eventually the container bursts and the contents are stored in the microwave oven. Will be scattered.

  Normally, the sealed food is taken out of the packaging container, transferred to a ceramic container, a heat-resistant glass container, or a container using a heat-resistant plastic such as polyethylene terephthalate, polycarbonate, polypropylene, etc. It is common to cover with a wrap film due to the sudden boiling of the juice.

  In addition, the lid of the sealed container is partially or fully opened before heating so that the internal pressure does not increase. However, it is common to cover with a wrap film due to steam from food, bumping of juice, etc.

  In order to improve such problems, proposals have been made to prevent the container from bursting.

  A special seal shape is provided in the seal part of the packaging bag to propose steam removal (Patent Document 1).

  A low temperature seal portion is provided in the seal portion of the packaging bag, and a notch is provided in the seal shape to propose steam venting (Patent Document 2).

  A non-woven fabric is provided on a part of the packaging bag so that the steam can escape (Patent Document 3).

  These methods are single packaging bags, and when the contents are fluid, such as a liquid, the contents spill out if the side portions are provided with steam vents. After heating, the pouch is hot and difficult to handle and may cause burns. Moreover, the sealing property as a packaging bag cannot be obtained by the method using a nonwoven fabric.

  Moreover, since the food of the contents is heated, the container itself is heated and there is a fear of a burn when touched directly.

  There is also a proposal for storing a packaging bag in an outer box (Patent Document 4).

  In this method, a microwave oven is heated in a state where the bag is set up, that is, in a vertically placed state. As a countermeasure when the formation of the steam escape port is forgotten in advance, a steam escape portion is formed in the bag upper seal portion. In the method of storing the packaging bag in the outer box, it can be placed vertically using the outer box, but the consumer may not assemble properly, and the container may fall over, in which case the contents Will scatter and pollute the inside of the microwave oven.

  In addition, plastic trays, plastic cups used in packaging containers, trays and cups using laminates of paperboard and heat-resistant film are also heated, and the containers themselves are heated and there is a risk of burns if touched directly. So, it takes time and effort to take it out by putting on gloves or putting the container on another plate and heating it.

  Therefore, the sealed container that contains food is not damaged by dropping or external pressure during transportation, and when heated in a microwave oven, contamination of the microwave oven due to vapor or juice boiling from food or the heated container is taken out There is a need for a safe packaging container that does not suffer from burns and the like.

JP-A-2-84908 Japanese Patent Laid-Open No. 10-95471 Japanese Patent Laid-Open No. 9-240754 JP 2000-159277 A

  The sealed container that contains the food is not damaged by dropping or external pressure during transportation, and there is no concern about rupture or contamination of the microwave oven due to bumping of juice when heated in a microwave oven, It is another object of the present invention to provide a packaging container that can be taken out without being touched directly after cooking.

  In order to solve the above problems, the inventors have intensively studied and completed the present invention.

  The invention according to claim 1 of the present invention includes a sealed container in which a container body and a lid material are sealed in a carton formed of at least a front plate, a side plate, a top plate, a bottom plate, and a rear plate. The carton has an opening in the top plate, or at least a region formed by connecting the front plate and the top plate, and the back surface of the top plate and the surface of the lid member are adhesively fixed. It is a sealed container simultaneous opening carton.

  The invention according to claim 2 of the present invention is the sealed container simultaneous opening carton according to claim 1, wherein the lid member is made of a sealant layer having easy peel properties.

  The invention according to claim 3 of the present invention is the sealed container simultaneous opening carton according to claim 1 or 2, wherein the container body of the sealed container is in the shape of any of a tray, a cup, and a bag. .

  According to the first aspect of the present invention, a sealed container (hereinafter referred to as an inner container) is accommodated in a carton (hereinafter referred to as an outer container), and the back surface of the top plate of the outer container and the lid material of the inner container. It is a sealed container simultaneous opening carton that can be bonded and fixed to the surface and can open the outer container at the same time as opening the cover of the inner container. Since the inner container is stored in the outer container, there is no damage due to dropping during transportation or damage due to external pressure. Further, conventionally, it has been troublesome to open the opening portion of the outer container and further open the lid of the inner container. In particular, although the outer container was opened, forgetting to open the lid of the inner container, the inner container could be ruptured by heating. In the carton of the present invention, since the outer container and the inner container are opened simultaneously, there is no risk of rupture.

  In the case of heating with a microwave oven, in order to prevent an increase in the internal pressure of the inner container, if the opening portion of the outer container once opened is closed, contamination in the microwave oven due to bumping of steam or juice can be prevented. This can improve resealability from the rigidity of the paperboard used for the outer container. In addition, there is no risk of burns because there is no direct contact with the heated inner container.

  After heating, by holding one end of the outer container without touching the heated container, it can be easily taken out from the microwave oven and carried. In addition, the presence of the outer container makes it difficult for the inner container to fall during heating or removal.

  In addition, by printing on the outer container, the beauty of the pattern and the amount of character information can be increased.

  According to the second aspect of the present invention, the ease of opening can be further improved by giving the sealant layer of the lid material an easy peel property.

  According to invention of Claim 3, the shape of an inner container can use a tray shape, a cup shape, and a bag shape. A tray or cup shape having an opening such as a circle, an ellipse, or a rectangle can be used, and a lid member may be sealed in the opening. In the case of a bag shape, an opening is formed on the inside of the bag so as to make it easier to open the lid material that forms an opening in the body of the bag and closes the opening, or the bag itself, and is surrounded by this opening line. By adhering the region to the opening of the outer container, the bag can be opened together with the opening of the opening of the outer container.

It is a surface expansion | deployment figure which shows an example of the blank of an outer container. It is a back surface expanded view which shows an example of the blank of an outer container. It is explanatory drawing which shows an example of the outer container after an assembly. It is explanatory drawing which shows an example of the sealed container simultaneous opening carton of this invention. It is explanatory drawing which shows an example at the time of opening of the sealed container simultaneous opening carton of this invention. It is explanatory drawing which shows an example at the time of resealing of the sealed container simultaneous opening carton of this invention. It is explanatory drawing which shows an example of the outer container after an assembly. It is explanatory drawing which shows an example of the sealed container simultaneous opening carton of this invention.

  The best mode for carrying out the present invention will be described below.

FIG. 1 is a surface development view 1 showing an example of a blank for producing an outer container. A front plate 3 and a rear plate 5 are connected to the left and right of the top plate 2 via a folding line 15, and a side plate 4 is connected to the upper edge of the top plate 2 via a folding line 15. A bottom plate 6 is connected to the rear plate 5 via a fold line 15 at an edge opposite to the top plate. A side plate 7 is connected to the lower edge of the bottom plate 6 via a fold line 15. Further, the front plate 3 has an adhesive plate 8 on the opposite edge of the top plate, an adhesive plate 9 on the upper edge of the side plate 4, and an adhesive plate 10 on the lower edge of the side plate 7, respectively. 15 are connected to each other. Further, flaps 11 and 12 are connected to the upper and lower edges of the front plate 3, and flaps 13 and 14 are connected to the upper and lower edges of the rear plate via folding lines 15, respectively. The front plate 3 and the top plate 2 are provided with perforation lines 16 for forming an opening portion.

  FIG. 2 is a developed rear view 19 showing an example of a blank for creating an outer container. The perforation line 16 for opening and the hot-melt part 18 which adhere | attaches the cover material of an inner container are shown.

  FIG. 3 is an explanatory view showing an example of the outer container 20 after assembly. A paste material is attached to the sticking plate of the developed view shown in FIG. The side plate is provided with a perforation line 16 for forming an opening portion 17 so that the side plate can be opened. This perforation line is connected from the side plate to the top plate, and is provided up to the position where the lid of the inner container is to be opened. The perforation line that guides the opening of the outer container 20 may be a slit line or a break line.

  The position where the opening portion is provided is provided at least in a region connected to the front plate and the top plate. Only the top plate may be used. It can be determined appropriately depending on the shape of the inner container.

  Also, in order to bond and fix the back of the top plate and the lid of the inner container, as shown in FIG. 2, the ethylene-vinyl acetate resin, acrylic resin, and urethane resin are aligned with the position of the lid on the back of the top plate. A hot melt agent such as polyethylene resin is partially applied. After the inner container is inserted, it can be fixed by thermal bonding with the lid.

  FIG. 4 is an explanatory view showing an example of the sealed container simultaneous opening carton 21 of the present invention. The state which accommodated the inner container 22 in the outer container 20 is shown. In this state, the back surface of the top plate 2 of the outer container 20 and the lid member 23 of the inner container 22 are bonded and fixed by heat pressure.

  As the shape of the inner container 22, a plastic tray or cup shape can be used. A tray or cup shape having an opening such as a circle, an ellipse, or a rectangle can be used.

  As the tray and cup-shaped inner container, those using a heat-resistant plastic resin such as polyethylene terephthalate, polycarbonate, polypropylene, and methylpentene polymer can be used.

  To form a tray or cup shape, it can be formed by injection molding using polyethylene resin, polypropylene resin, polyethylene terephthalate resin, polycarbonate resin, methylpentene polymer resin, or the like. Moreover, a sheet | seat can be produced with an extruder using these resin, and the sheet | seat can also be produced with the vacuum forming method and the press molding method. The thickness is not particularly limited. It can be determined by the volume and weight of the contents.

  Moreover, as shown in FIG. 8, it can be used also for a bag shape. An opening is formed on the inner side of the bag so as to make it easy to open the lid material that forms an opening in the body portion of the bag 24 and closes the opening, or the bag itself, and the area surrounded by the opening line is an outer container. By adhering to the opening part, the bag can be opened together with the opening part of the outer container. The shape of the bag 24 is not particularly limited, but a pillow bag or a gusset bag is preferable.

  The bag-shaped inner container includes at least a base material layer and a heat seal layer. As the base material layer, stretched polyethylene terephthalate film, stretched polypropylene film, stretched nylon film, stretched polyethylene naphthalate film, silica-deposited stretched polyethylene terephthalate film, alumina-deposited stretched polyethylene terephthalate film, stretched silica-deposited stretched nylon film, alumina-deposited stretched nylon A film, a silica vapor-deposited stretched polyethylene naphthalate film, an alumina vapor-deposited stretched polyethylene naphthalate film, and a thickness of 10 μm to 50 μm, preferably 10 μm to 30 μm.

  As the heat seal layer, low density polyethylene, ultra low density polyethylene, linear low density polyethylene, medium density polyethylene, high density polyethylene, unstretched polypropylene, ethylene-vinyl acetate copolymer, ethylene-acrylic acid copolymer, Resins such as ethylene-methacrylic acid copolymer, ethylene-methyl acrylate copolymer, ethylene-ethyl acrylate copolymer, ethylene-methyl methacrylate copolymer, or ionomer can be used.

  The heat seal layer may be formed by extrusion lamination of these resins, or a film previously formed by T-die method or inflation method may be laminated with a base material layer by dry lamination or extrusion lamination method. good. The thickness of the heat seal layer is 15 μm to 100 μm, preferably 15 μm to 40 μm.

  The inner container lid 23 is formed of a base material layer and a sealant layer. As the base material layer, stretched polyethylene terephthalate film, stretched polypropylene film, stretched nylon film, stretched polyethylene naphthalate film, silica-deposited stretched polyethylene terephthalate film, alumina-deposited stretched polyethylene terephthalate film, stretched silica-deposited stretched nylon film, alumina-deposited stretched nylon A film, a silica vapor-deposited stretched polyethylene naphthalate film, an alumina vapor-deposited stretched polyethylene naphthalate film, and a thickness of 10 μm to 50 μm, preferably 10 μm to 30 μm.

  As the sealant layer, a resin having an easy peel property is used. As the sealant layer having easy peel properties, there are a cohesive failure type, an interlayer peeling type, and an interface peeling type.

  The cohesive failure type is a type in which the sealant layer itself cohesively breaks. Using a resin mixed with resin such as polypropylene, polyethylene, polystyrene, etc., it is formed into a film and laminated on the base material layer, or the coating solution of this resin is used. It can be used by coating.

  For example, a resin in which a polyolefin resin such as polyethylene, high-density polyethylene, linear low-density polyethylene, or polyethylene is mixed with a polybutene resin, or a resin in which a polyolefin resin and a polystyrene resin are mixed can be used.

  The delamination type is a method in which a three-layer film is prepared by a coextrusion method and is peeled from an intermediate layer. This coextruded film can be used by being laminated on a base material layer.

  The interfacial peeling type can be used by forming a film using a resin in which the mixing ratio of the vinyl acetate of the ethylene-vinyl acetate copolymer resin is increased and laminating it on the base material layer.

  Any of the above three types can be used as the sealant layer having easy peel properties. The thickness and the like may be determined as appropriate from the peel strength, peelability, and the like.

  A paper material is used as the base material of the outer container that can be used in the present invention. Although not particularly limited, for example, a paperboard such as a cup base paper, a coat ball, a coat guard, a coat manila, and an ivory can be used. The strength is improved by laminating a thermoplastic resin on the inner surface side of the substrate. As the thermoplastic resin, polyolefin resins such as polyethylene and polypropylene are preferable. Among these, polyethylene is preferable from the viewpoint of workability. In addition, you may laminate | stack a thermoplastic resin layer also on an outer surface as needed.

By printing on the outer surface side of the base material of these outer containers, it is possible to increase the cosmetics by the pattern and the amount of information by characters, as compared to the inner container alone, and the sales promotion effect of the product can be increased.

  As a printing method, printing can be performed by commonly used methods such as offset, flexo, gravure, and ink jet.

  The hot melt agent for adhering and fixing to the lid of the inner container is applied so as to match the back surface of the top plate and the position of the lid of the inner container. It coats partially using hot melt agents, such as an acrylic resin, ethylene-vinyl acetate copolymer resin, and urethane resin. As a coating method, an offset coat, a gravure coat, a hot melt gun or the like can be used.

  In this way, the original fabric coated on the outer surface side of the paper base material and coated with the hot melt agent on the inner surface side is matched to the assembly dimensions of the outer container, creased, perforated, punched, and shown in FIGS. Blanks can be created.

  FIG. 5 is an explanatory view showing an example of opening the sealed container simultaneous opening carton of the present invention. The inner container 22 is stored in the created outer container 20. It arrange | positions so that the back surface of the top | upper surface board 2 of an outer container and the surface of the cover material 23 may contact | connect. The arrangement is such that the opening direction of the outer container and the opening direction of the lid of the inner container are the same. Moreover, the opening part 17 is adhere | attached on the cover material of an inner container, and the part including at least a part in front of an opening direction, and the cover material of an inner container can be opened with the opening of an outer container.

  FIG. 6 is an explanatory view showing an example when the sealed container simultaneous opening carton of the present invention is resealed. When heating after opening the inner container, it is only necessary to close the opening portion of the outer container, and it is possible to prevent rupture of the inner container due to an increase in internal pressure during heating, contamination in the microwave oven due to bumping of the juice. Moreover, it can be easily resealed by providing a reseal structure in the outer container, for example, a notch for inserting and fixing the tip of the opening. Conventionally, lid materials used for trays, cups, bags, etc. are curled when opened and are difficult to reseal. In the carton of the present invention, resealability can be facilitated.

  FIG. 7 is an outer container showing an example in which an opening portion 17 is provided on the top plate 2 of the outer container 20. Even if the inner container is a tray, cup or bag shape, it can be used.

  FIG. 8 is a sealed container simultaneous opening carton showing an example in which a bag-shaped inner container is stored in the outer container 20 shown in FIG. It can be opened easily by providing an opening on the top plate.

  In the sealed container simultaneous opening carton of the present invention, the inner container is housed in the outer container, and the back surface of the top plate and the lid of the inner container are bonded and fixed. For example, when it is not necessary to take out the inner container from the outer container, the bottom of the inner container may be bonded to the bottom surface of the outer container.

  Since the microwave oven can be heated with the opening portion of the outer container closed, cooking can be performed in a stable state without rupture due to an increase in internal pressure of the inner container or bumping of liquid juice. Furthermore, since it can be taken out with the inner container stored in the outer container, the inner container is not touched directly and there is no fear of burns. After use, both the outer and inner containers can be discarded as incinerated waste.

  In addition to foods cooked by heating in a microwave oven, it can be used for foods cooked in hot water, steamed foods, and the like.

DESCRIPTION OF SYMBOLS 1 Surface development of an outer container 2 Top plate 3 Front plate 4 Side plate 5 Rear plate 6 Bottom plate 7 Side plate 8 Adhesion plate 9 Adhesion plate 10 Adhesion plate 11 Flap 12 Flap 13 Flap 14 Flap 15 Fold line 16 Perforation line 17 Opening part 18 Hot melt part 19 Back view development of outer container 20 Outer container 21 Sealed container simultaneous opening carton 22 Inner container 23 Lid material 24 Bag

Claims (3)

In a carton formed of at least a front plate, a side plate, a top plate, a bottom plate, a rear plate, and a sealed container in which a container body and a lid material are sealed,
The top panel, or at least a region connected to the front panel and the top panel has an opening part,
A sealed container simultaneous opening carton, wherein the back surface of the top plate and the surface of the lid member are bonded and fixed.   The sealed container simultaneous opening carton according to claim 1, wherein the lid member is made of a sealant layer having an easy peel property.   3. The sealed container simultaneous opening carton according to claim 1 or 2, wherein the container body of the sealed container has a shape of a tray, a cup, or a bag.

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