JP5721663B2 - Food paper container. - Google Patents

Description

The present invention relates to a paper container for food that is assembled from a single paper sheet member and partially bonded or heat sealed. The present invention also relates to a paper container for food that is particularly suitable for a microwave oven.

  Conventionally, various paper containers have been disclosed. In recent years, in particular, microwave cooking has become popular, and a paper container that is assembled from a single paper sheet material as shown in FIG. 1 and manufactured by fixing a folded portion to a side wall portion is used. And this type of food-made paper containers are increasingly used for food storage, cooking such as hot water pouring and microwave cooking.

  The container of FIG. 1 is a convenient container in which food or the like can be placed and heated in a microwave oven, and can be eaten by opening the upper lid after the cooking.

  However, in this container, when holding the container itself, there is no handle part, so when trying to hold the container, it may be grasped from above or have upper four corners as shown in FIGS. 2 (a) and (b). there were.

  Of course, there is no problem with the method of holding the container in this way, and the container can be handled sufficiently. However, if there is a handle for holding the container, the convenience is further improved.

  In particular, when food is stored in the container and the container is moved after pouring hot water or cooking in a microwave oven, the container may be slightly hot immediately after cooking.

  In such a case, if the handle portion can be held separately, the container can be moved more easily.

  As an example of providing such a handle portion, for example, Prior Art Document 1 discloses a box-type container of the type shown in FIG. 1 in which a handle portion is provided in a food paper container.

JP, 2008-68885, A The container given in patent documents 1 is an excellent container in which a handle part was provided and a side part could be fixed without using adhesives etc. However, since it is necessary for the eater to bend the handle portion of the container, the operation is somewhat complicated.

Accordingly, the present inventors have aimed to develop a new method of providing a handle portion of a container in a box-type container assembled from a single sheet of paper as shown in FIG.

  As a result of diligent research such as trial production and trial and error by the inventors of the present invention, in a conventional container, the upper portion of the folded portion can be unfixed and expanded, and the expanded folded portion upper portion is used as a handle portion Was found to be effective.

  Furthermore, by adopting this method, it was found that the upper lid can be opened without difficulty by holding or holding both handle portions and pressing each other, thereby completing the present invention.

That is, the first invention of the present application is
“A food storage and cooking paper container configured by folding a single paper sheet material, and a pair of first side walls rising from a rectangular bottom surface and two opposite sides of the bottom surface. And a pair of second side walls standing from the opposite two sides of the bottom surface, and between the adjacent first and second side walls, and from the corner of the bottom surface A folded portion that is folded by a straight crease line extending linearly;
A pair of lids connected to each of the pair of opposite side walls of the first side wall or the second side wall,
The folded portion is bent to the first side wall portion side and bonded and fixed on an outer surface in contact with the first side wall portion;
The upper portions of the pair of folded portions located symmetrically with respect to the bottom surface portion are unfixed from the first side wall portion, and are partitioned by a break line so that deployment is possible.
The pair of lids have a mechanism for engaging and locking each other at their ends, and a container for food storage and cooking paper. "
It is.

  Moreover, in the container made from microwave oven paper of Claim 1, the direction where the cover part opens is preferable by pressing the expanded folding | returning part upper part (grip part) toward the container side.

That is, the second invention of the present application is
“The food storage and cooking paper container according to claim 1, wherein the engagement of the lid part is released by pressing the unfolded upper portions of the pair of folded portions toward the container side each other.”
It is.

  Further, the paper sheet material is preferably a laminated body made of plastic and paper.

That is, the third invention of the present application is
“The container for food storage and cooking paper according to claim 1 or 2, wherein the paper sheet material is a laminated body made of plastic and paper.”
It is.

  Furthermore, the cooking method is preferably a microwave cooking method.

That is, the fourth invention of the present application is
“The cooking is microwave cooking, food container and cooking container according to claim 1,”.
It is.

By adopting the configuration of the present invention, a handle portion can be provided in a box-shaped food storage and cooking paper container formed from one paper sheet material. Thus, the container can be easily carried after pouring hot water or cooking in a microwave oven, and the lid can be opened without difficulty.

It is a general form figure of the conventional paper container. It is the reference figure which showed the general handling of the paper container until now. It is an expanded view of the embodiment of the paper container concerning this invention. It is a perspective view in the middle of folding of a folding | returning part in the middle of an assembly of a paper container. It is a perspective view in the middle of folding the folding | turning part to a 1st side wall part in the middle of the assembly of paper containers. FIG. 5 is a perspective view after the folded portion is bonded to the first side wall during the assembly of the paper container. It is a perspective view of the state where the lid was engaged after food was stored in the paper container. It is a perspective view at the time of expand | deploying the folding | turning part upper part of a paper container from a 1st side wall part. (A) It is a schematic diagram in the case of hold | maintaining a handle part. (B) It is a perspective view at the time of hold | maintaining both the handle parts in the direction of an arrow pulling. (A) It is a perspective view at the time of pressing both grip parts mutually in the arrow direction. (B) It is a perspective view which shows the state which the cover part opened after the press. It is a top view of the paper container which showed another aspect of the engagement state of a cover part. (A), (b) is the front view which showed another aspect of the handle part. It is the perspective view which showed another aspect of the flap part.

DESCRIPTION OF SYMBOLS 1 Bottom part 2 1st side wall part 3 2nd side wall part 4 Folding part
4-1 Lower part of folded part
4-2 Folding part upper part (grip part)
5 Flap part 6 Lid part a Boundary crease line b between the bottom face part and the side wall part Boundary crease line c between the second side wall part and the folded part c Boundary crease line d between the first side wall part and the folded part e Equal angle crease line e of the folded part Crease line (perforation) between the wall and the first side wall
f Boundary crease line (perforation) between the lid and the first side wall
g Boundary line (perforation) between the upper part (grip part) and lower part

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the present invention is not limited to these embodiments.

  As an example of an embodiment of the present invention, FIG. 3 shows a developed view and will be described. In FIG. 3, when assembling a container, a broken line shows an outer fold and a dashed-dotted line shows an inner fold. A two-dot chain line indicates a break line (a perforation or the like).

  The paper sheet material can be selected in various forms. For example, the paper sheet material may be a double layer of paper and a plastic film, or a plastic film so that only the paper or the plastic film is assembled on the inner surface or the outer surface or both surfaces of the container. A paper sheet consisting of three layers laminated on both sides of the paper can be used. Further, the paper can be not only a single layer but also three layers such as cardboard, but it is preferable to use a base sheet having relatively high rigidity.

  As the plastic film, various plastic films can be used as long as they are cooked at room temperature. However, when heating, it is preferable to use a heat-resistant plastic film for the inner surface.

  Specifically, for example, polybutylene terephthalate (PBT) has a thickness of about 15 to 30 μm, polyethylene terephthalate (PET) has a thickness of about 12 to 30 μm, and polypropylene (PP) has a thickness of 15 to 30 μm. About 40 μm can be used.

  As shown in FIG. 3, the food paper container of the present invention is formed of a single sheet-like member. In this development view, first, a square or rectangular bottom surface having four sides (a) is shown. Part (1), substantially trapezoidal first side wall part (2) and second side wall part (3) having four sides a, provided between the first side wall part and the second side wall part, and sides b and c The folding | returning part (4) which shares is provided.

  Moreover, in the folding | turning part (4), the edge part is divided by the breaking line g, and although mentioned later, the part (4-2) divided by this breaking line is from a 2nd side wall part after formation of a container. It is formed so that it can be unfolded and deployed and become a handle.

  In the present embodiment shown in FIG. 3, the breaking line g is provided in the upper right folded portion facing the paper surface and the lower left folded portion that is symmetrical with respect to the folded portion. It is not limited, You may provide the breaking line g in the upper left folding part and the lower right folding part toward the paper surface.

  Next, in this embodiment, the flap part (5) connected by sharing the side e from the first side wall part (2) is provided. About this flap part, it is arbitrary and may not provide in particular. However, it is preferable to provide a flap part from the viewpoint of preventing the leakage of steam from the container by pouring hot water or cooking in a microwave oven. Further, the flap portion may be separated and removed during eating.

  Furthermore, the cover part (6) connected by sharing side f from the 2nd side wall part is provided. In addition, in the case of FIG. 1, the cover part (6) is connected with both of the second side wall parts, and the upper closed type is disclosed. Various style types other than those shown in FIG. 1 can be utilized. In addition, you may isolate | separate and remove this cover part at the time of eating.

  Further, in this embodiment, for the direction of engagement of the lid portion (6), when the upper portions (handle portions) (4-2) of the above-described pair of unfolded folded portions are pressed in a direction toward the container, The direction is such that the engagement between the lid portions (6) is released. On the contrary, when pulled away from the container, the engagement between the lids (6) is strengthened. Although it depends on the mode of engagement of the lid (6), it is preferable that the lid (6) be released from the engagement when pressed in the direction toward the container.

  The container can be used as a packaging container that contains food inside, and can also be used as a cooking container that cooks food stored inside. Each of these cases will be described below.

  First, the container is assembled by the steps shown in FIGS. 4 to 6 from the development view of FIG. 1 for explaining the procedure when the container is used as a container containing food inside. That is, the rectangular bottom surface portion 1 of the sheet-like member is defined, and the first side wall portion (2) and the second side wall portion (3) are erected from each side a of the bottom surface portion 1 (FIG. 4). Further, the folding portions (4) at the four corners which are surplus portions are folded so that the folding lines b and c coincide with each other while folding inward at the folding line d (FIG. 5). Next, the folded-back folded part (4) is folded down to the first side wall part (2) side and fixed on the contact surface with the first side wall part with an adhesive such as hot melt or laminated plastic. Heat-seal the surfaces and fix them.

  In addition, although this folding | returning part (4) is divided into the folding | returning part upper part (4-2) and the folding | returning part lower part (4-1), about the fixation to the above-mentioned 1st side wall part, the folding | returning part lower part ( Adhesion or heat sealing is preferably performed in the region 4-1). Further, it is preferable that the folded portion upper part (4-2) is slightly fixed even if it is bonded or heat sealed.

  As will be described later, the upper portion (4-2) of the folded portion is broken by the breaking line g, is unfixed from the first side wall portion, and needs to be developed. For this reason, when firmly fixed by adhesion or the like, it is difficult to release the fixing from the first side wall.

  Next, for example, dry rice, instant noodle chunks, packed dry rice, packed noodles, ingredients, etc. are stored in the formed container and connected to the first side wall (2). As shown in FIG. 7, the flange portion (5) is folded inside the container, the upper portion is covered with a pair of lid portions connected to the second side wall portion (3), and the lid portions are engaged with each other. Cover the top of the.

  The food container can be transported, sold, or distributed in this state or after being covered with a film such as polypropylene or polyethylene.

  In addition, in the said embodiment, although the substantially taper shape (type which spreads toward the upper part from a bottom face part) is shown, this invention is not restricted to this embodiment, It can apply also to the rectangular parallelepiped which is not a taper shape. Of course.

  Next, the procedure in the case of cooking by heating with hot water pouring, a microwave oven, etc. from the main container in which food is stored will be described.

  When the lid (6) of the container described above is disengaged and opened, and the contents are packed, the contents are opened and reinserted into the container. In response, after putting other ingredients and seasonings in the container, heat cooking with hot water pouring or microwave oven. Of course, the Western container is not limited to microwave cooking, but can be eaten only by pouring hot water.

  For example, if dry rice in a pack, desiccant materials, etc. are stored, each pack is opened, placed in a container, and optionally added with water, sauce, etc., then the upper lid (6 ) Is engaged for locking and cooked in a microwave oven or the like. Of course, the order of adding dry rice and dry ingredients after adding water is acceptable.

  Further, it is possible to adopt a form in which the dried rice or the drying tool is not enclosed in the pack and is already stored in the container. In this case, it is possible to cook in a microwave oven by simply adding water or hot water.

  Before and after pouring hot water or cooking with a microwave oven, when handling the cup, unfold the handle part (4-2) from the breaking line g at the top of the folded part as shown in FIG. It can be in such a state.

  When holding both handle parts (4-2) in the state shown in FIG. 8, as shown in FIG. 9, by holding the handle sideways, it is possible to keep the cup lid tightly closed, and later the electronic In the case of cooking in the range, steam blowing can be reduced.

  In addition, in the case of cooking by pouring hot water, when the container is moved for a predetermined time after pouring hot water, the lid (6) can be kept closed when moving together with the container.

  Next, after pouring hot water or cooking in a microwave oven, if the container is difficult to hold at high temperatures, the expanded folded part upper part (4-2) can be used as the handle part. Easy to carry with you.

  Furthermore, in this embodiment, the lid portion can be opened using the handle portion (4-2) for the engagement between the upper lid portions (6). That is, as shown in FIG. 10 (a), by pressing the two handle portions (4-2) toward the inside of the container, the engagement state of the lid portion (6) can be easily set as shown in (b). It can be canceled.

  While the first embodiment has been described above, other variations are possible as appropriate in the present invention.

  For example, with respect to the engagement style of the upper lid portion, in addition to the one shown in the first embodiment, a slit (S) is provided in one lid portion (6) as shown in FIG. A type in which the insertion piece (I) for the slit is provided in (6) is also possible. As described above, various types of lid engaging styles are conceivable.

  Furthermore, as for the shape of the folded portion upper part (grip part) (4-2) developed by the breaking line g, the breaking line as shown in FIG. Of course, as shown in FIG. 12B, a judgment line may be provided so as to reduce the size of the handle portion after fracture.

  Furthermore, about flap part (5), as shown in FIG. 13, by making it a big size which covers the whole container opening part, the amount of hot water pouring and the amount of blowout of microwave oven steam can be reduced.

Claims (4)

A container for food storage and cooking paper, which is formed by folding a sheet of paper sheet material, and has a rectangular bottom surface (1) and a pair of first erected from two opposite sides of the bottom surface portion. 1 side wall part (2), a pair of 2nd side wall part (3) which stands up from the other two opposite sides of the bottom face part, and the adjoining 1st side wall part (2) and 2nd side wall part (3 ) And a folded portion (4) that is folded by an equiangular crease line that extends linearly from the corner portion of the bottom surface portion,
A pair of lids (6) connected to each of the pair of opposite side walls of the first side wall or the second side wall,
The folded portion (4) is bent to the first side wall portion side and bonded and fixed on an outer surface in contact with the first side wall portion (2);
The upper portions of the pair of folded portions (4) located symmetrically with respect to the bottom surface portion (1) are unfixed from the first side wall portion, and are partitioned by a breaking line (g) so that they can be deployed.
The pair of lids (6) has a mechanism for engaging and locking with each other at their ends, and a container for food storage and cooking paper.
The container for food storage and cooking paper according to claim 1, wherein the engagement of the lid portion is released by pressing the unfolded upper portions of the pair of folded portions toward the container side.
The container for food storage and cooking paper according to claim 1 or 2, wherein the paper sheet material is a laminated body made of plastic and paper.
The food storage and cooking container according to any one of claims 1 to 3, wherein the cooking is microwave cooking.