JP4526855B2 - Paper food packaging container - Google Patents

Description

  The present invention relates to a paper food packaging container suitable for packaging, for example, take-out foods and frozen foods.

  Conventionally, tray-shaped foam plastic packaging containers are generally used as containers for packaging foods such as fried noodles, takoyaki or oden at entertainment venues and baseball fields. The reason why such foamed plastic packaging containers are preferably used is that they are lightweight, have sufficient shape retention, liquid seasonings such as sauces and soy sauce applied to the surface of food, or There is an advantage that the liquid soaked out from the food and the liquid soup of the stewed food are not soaked into the container.

  However, such a packaging container made of foamed plastic has some problems in terms of disposal. In other words, since foamed plastic does not decompose naturally, it must be incinerated when it is disposed of, but harmful gases that adversely affect the human body are generated during the incineration. There is a problem that the life of the incinerator is shortened due to extremely large heat of combustion generated during incineration.

Therefore, recently, a tray-like paper packaging container has been used as an alternative to such a foamed plastic packaging container. According to this paper container, the above-mentioned problems do not occur when it is disposed of. However, when food is packaged using this paper container, liquid seasonings and juice are immersed in the container. There is a problem that the inner surface of the container becomes dirty. Thus, it becomes difficult to recycle the container whose container inner surface is dirty as paper. Therefore, in order to prevent dirt on the inner surface of the container, a paper with a film with excellent water resistance and oil resistance such as a synthetic resin film laminated on one side was used, and this was assembled so that the film was the inner surface. Paper containers have been proposed.
JP-A-10-291279 (Claim 1)

  However, according to this paper container, since the film is entirely adhered to the inner surface of the container, it is difficult to separate the container and the film, and as a result, it becomes difficult to regenerate the container as paper. It was.

  The present invention has been made in view of the technical background as described above, and its purpose is to facilitate separation of the container and the antifouling film, and to make the container reusable in a clean state. It is to provide a container for food packaging.

  In order to achieve the above object, the paper food packaging container according to the invention of claim 1 includes a plurality of antifouling films laminated with an antifouling film for preventing fouling due to contact with food, and a plurality of peelable adhesives. A paper food packaging container adhered at a location, wherein the peelable adhesive is of an emulsion type, and the container body is aligned with the bottom wall and the peripheral edge of the bottom wall in the circumferential direction. And a plurality of connecting pieces interposed between the edges of the adjacent side walls, and the connecting pieces are connected to the end edges of the respective side walls, and are connected to each other. A pair of folding halves connected to each other, and adjacent side walls are folded in half from the folding half fold, and one of the folding halves is on the folding half side. By being attached to the outer surface of the side wall, In the film, the corresponding part with the container body is composed of a bottom wall corresponding part, each side wall corresponding part, and each connecting piece corresponding part, and each of the bottom wall corresponding part and each side wall corresponding part, The container body is laminated on the bottom wall and the inner surface of each side wall, and the connecting piece corresponding portion is laminated on the inner surface of the connecting piece, and in this state is folded in a double fold with the connecting piece, Is assembled from a container assembly piece, and is soiled after the peelable adhesive is applied to the surface of the paper used to obtain the container assembly piece. The prevention film material is laminated, and in this state, the paper and the film material are simultaneously punched into the shape of the container assembly piece to obtain a container assembly piece and the entire inner surface of the container assembly piece Dirt prevention In this state, the container assembling piece is assembled into a container, so that the corresponding portion of the connecting piece of the film is laminated on the inner surface of the connecting piece and folded together with the connecting piece. The ratio of the total area of the adhered portion of the film to the inner surface of the container with respect to the total area of the back surface of the film is set to 30% or less, and the film is formed at this ratio. The film is held in a state of being laminated on the inner surface of the container by being attached to the inner surface of the container.

  According to claim 2, in the paper food packaging container according to the invention of claim 1, a configuration is adopted in which the one folded half is adhered to the outer surface of the side wall on the folded half side by an emulsion-type adhesive. .

  In Claim 3, in the container for paper food packaging according to the invention of Claim 1 or 2, the structure in which the sticking part of the film to the container inner surface is a spot having a diameter of 3 to 10 mm is adopted. .

  According to a fourth aspect of the present invention, in the paper food packaging container according to the first or second aspect of the present invention, the film is adhered to the inner surface of the film with a dotted line and a wire having a diameter of 3 to 10 mm on the inner surface of the container. Adopted a configuration with a mixture of things.

  In Claim 5, the container for paper food packaging which concerns on invention of any one of the said Claims 1-4 WHEREIN: The cover body is integrally provided in the said container main body, The said film is further the said container. Provided integrally with a corresponding part with the main body, and provided with a corresponding part with the lid, the lid corresponding part is laminated on the inner surface of the lid, and at least at the tip of the lid corresponding part The structure where the length direction both ends and the length direction both ends in the base end part were stuck on the inner surface of the said cover body was employ | adopted.

  In Claim 6, The container for paper food packaging which concerns on invention of any one of the said Claims 1-5 WHEREIN: The structure by which the said connection piece corresponding | compatible part is laminated | stacked on the inner surface of the said connection piece in the non-sticking state. It was adopted.

  According to claim 7, in the paper food packaging container according to any one of claims 1 to 6, the folding fold of the connecting piece is at least for breaking along the folding fold. A configuration with cuts was adopted.

  In Claim 8, the structure by which the upper part of each said side wall corresponding part is affixed in the container for paper food packaging which concerns on invention of any one of the said Claims 1-7 was employ | adopted.

  In a ninth aspect of the present invention, in the paper food packaging container according to any one of the first to eighth aspects of the present invention, a free part for winding the film is provided at least through a breaking cut in a part of the container. Adopted the configuration.

  According to a tenth aspect of the present invention, in the paper food packaging container according to the invention of any one of the first to ninth aspects, the container is made of cardboard.

  In claim 11, in the paper food packaging container according to any one of claims 1 to 10, the film is made of paper.

  According to Claim 12, in the paper food packaging container according to the invention of Claim 11, the film has a thickness of 40 to 80 μm.

  In Claim 13, in the paper food packaging container according to any one of Claims 1 to 10, the film is made of a PET resin.

  In the fourteenth aspect, in the paper food packaging container according to the thirteenth aspect, the film has a thickness of 10 to 100 μm.

  In Claim 15, in the paper food packaging container according to any one of Claims 1 to 14, the container is formed by connecting adjacent portions through folds, The structure where the film was stuck in the part except the whole fold and its vicinity was employ | adopted.

  The container for paper food packaging according to the present invention has an antifouling film laminated on the inner surface to prevent dirt due to contact with food, so that, for example, fried noodles or takoyaki, sauce or soy sauce on the surface Even when a food with a liquid seasoning such as oden or food with a juice such as oden is put in the container, the inner surface of the container can be prevented from being stained. In addition, since this container is affixed with an adhesive that can peel the film, the film is torn off from the inner surface of the container while the film is torn at the adhering part, and a part of the film remains on the inner surface of the container. Does not occur. Therefore, this container has an advantage that it can be used for regeneration in a clean state. In addition, since the container has a film stuck at a plurality of locations, the total area of the film sticking portion is small, so that the conventional paper container in which the film is stuck to the entire container inner surface is used. In comparison, the film can be peeled off with a slight force, and when the film is peeled off, the part between the sticking parts of the film can be picked, and the film can be peeled off from this part. Therefore, the film can be easily peeled off.

  In the paper food packaging container according to the present invention, the container body has a bottom wall, a plurality of side walls arranged in the circumferential direction on the periphery of the bottom wall, and an edge between adjacent side walls. The connecting piece is composed of a pair of folding halves that are connected to the edge of each side wall and connected to each other via a folding fold, and the adjacent side walls are connected to each other. In a state where the connecting piece is folded in half from the folding half fold, one of the folding halves is bonded to the outer surface of the side wall on the folding half side, and the film is connected to the container body. The corresponding part is composed of a bottom wall corresponding part, each side wall corresponding part, and each connecting piece corresponding part, and the bottom wall corresponding part and each side wall corresponding part are respectively the bottom wall and each side wall of the container body. And the corresponding portion of the connecting piece is laminated on the inner surface of the connecting piece. Since both are folded in a folded state together with the connecting piece in this state, even if liquid seasoning or liquid juice enters between the two folded connecting pieces, a film is formed on the inner surface of the connecting piece. Since the connecting piece corresponding portions are stacked, the inner surface of the connecting piece can be prevented from being soiled.

  Further, in the paper food packaging container according to the present invention, since the connecting piece corresponding portion is laminated on the inner surface of the connecting piece in a non-sticking state, the connecting piece corresponding portion can be easily taken out between the connecting pieces. Has the advantage.

  Further, the paper food packaging container according to the present invention has a container body dismantling tab protruding from the upper edge of the other folding half, so that the tab is picked by hand and the other side is removed from the tab. By pulling the folding half of the container to the outside of the container body, the other folding half is broken at the folding part for folding and the container body is disassembled, or one of the folding halves is subjected to a tensile force from the knob. The container main body is disassembled by being peeled off from the outer surface of the side wall. After the container main body is disassembled, the two-fold connecting piece is in an open state, and therefore, there is an advantage that it is possible to more easily take out the connecting piece corresponding portion between the connecting pieces.

  Further, the paper food packaging container according to the present invention is provided with a plurality of breaking connecting portions and breaking cuts along the folding half folds in the folding half folds of the connecting pieces, By pulling the other folding half to the outside of the container main body, the other folding half is broken from the breaking connecting portion and the breaking cut, and the container main body is disassembled. Therefore, the container main body can be easily disassembled, and thus there is an advantage that the connecting work corresponding to the connecting piece between the connecting pieces can be taken out more easily.

  The paper food packaging container according to the present invention has the upper part of each side wall corresponding part adhered thereto, so that when the food is put into the container, the food is caught on the upper edge of the film and the film is The problem of turning over can be prevented.

  In addition, the paper food packaging container according to the present invention is provided with a film-breaking free part on a part of the container via a plurality of breaking connecting parts and breaking breaks. By pushing the inside of the container main body by hand to release the release portion from the container, the film can be rolled up, and the film can be peeled off more easily.

  In addition, since the paper food packaging container according to the present invention is a film made of paper, when incinerating the film peeled off from the inner surface of the container, a synthetic resin such as generation of harmful gases and a decrease in the life of the incinerator There is an advantage that the film can be incinerated without causing the incineration problem of the manufactured film.

  In addition, the paper food packaging container according to the present invention is such that adjacent parts are connected continuously through folds, and the film is attached at all folds and in the vicinity of the folds. Therefore, the problem that the adhesive is hardened and the crease part is difficult to bend is prevented, and therefore, this container has an advantage that the constituent parts can be easily bent when the container is assembled. .

  Next, embodiments of the present invention will be specifically described with reference to the drawings.

  1 to 7 show a paper packaging container (A) according to a first embodiment of the present invention. Although this container (A) is not shown in figure as an article to be packaged, for example, it is used for packaging foods such as fried noodles or takoyaki that have liquid seasonings on them, or foods that produce liquid juice such as oden. As shown in FIG. 1, the tray-like container body (1) is provided with a so-called lid in which a flat lid (9) is integrally provided.

  This container (A) is a so-called developed view shown in FIG. 4, which is obtained by punching a long and wide cardboard with a waist (for example, a thickness of 0.3 to 1 mm) into a predetermined shape with a press punching device. It is assembled from a container assembly piece (20) called a blank.

  Further, on the entire inner surface of the container main body (1) and the lid (9) of the container (A), as shown in FIG. ), And in this state, the film (30) is stuck at a plurality of locations with an adhesive that can be peeled off. In FIG. 1, (A) shows the sticking part of the said film (30), and each sticking part (I) is a dot shape with a diameter of 3-10 mm. As can be seen from FIG. 1, the attachment points of the film (30) are scattered, and specific attachment points will be described later.

   FIG. 5 shows a development view of the film (30). In this embodiment, the film (30) is made of a thin paper (for example, a thickness of 40 to 80 μm) rich in water resistance and oil resistance. As this thin paper, for example, a food wrapping paper “MOB” manufactured by Mishima Paper Co., Ltd. is used. It is used. This film (30) is laminated on the inner surface of the container assembly piece (20) before assembling the container assembly piece (20) into the container (A).

  Thus, the container (A) is assembled from the container assembly piece (20) shown in FIG. 4 as described above, and the container body (1) has a rectangular bottom wall. (2) and four front and rear left and right side walls (3) (4) connected to the peripheral edge of the bottom wall (2) in a circumferential direction through folds (11) (11) (11) (11) ) (3) (4) and the sum total of both side walls (3) (4) connected on the outer surface side of one side wall (4) interposed between the edges of adjacent side walls (3) (4). It consists of four connecting pieces (5) (5) (5) (5).

  The lid (9) is connected to the upper edge of the rear side wall (3) among the four side walls (3), (4), (3), and (4) through a fold (15).

  In the four side walls (3), (4), (3), and (4), the upper side edge of the front side wall (3) and the left and right side walls (4) and (4) are covered with a lid receiving piece (13) via a fold (13). 7) is provided in a protruding manner outwardly. Furthermore, the substantially semicircle-shaped protrusion part (8) is protrudingly provided in the longitudinal direction both ends at the front-end | tip of each right-and-left lid | cover receiving piece (7) (7).

  Each of the connecting pieces (5) includes a pair of substantially triangular folding halves (5a) and (5b) which are connected to each other via a folding half fold (10). One of the pair of folding halves (5a) (5b) is connected to the end of the side wall (4) on the folding halves side via a fold (12), The other folding half (5b) is connected to the edge of the side wall (3) on the folding half side via a fold (12). Then, as shown in FIG. 3, the connecting piece (5) is folded in half from the folding half fold (10) and folded in half, and in this state, one folding half (5a) The side wall (4) on the folding half side is attached to the outer surface of the end portion by an emulsion-type adhesive, whereby the adjacent side walls (4) and (3) are connected to each other and held in a standing posture. Further, a substantially trapezoidal container body disassembling knob (6) projects from the upper edge of the other folding half (5b) via the fold (14). As shown in FIGS. 1 and 2, the knob piece (6) is bent from the fold (14) and is polymerized on the lower surface of the lid receiving piece (7), so that the lid receiving piece (7) is outside. It is held in a protruding direction. Further, when the container body (1) is disassembled, the knob piece (6) is picked up after the lid receiving piece (7) is raised as shown in FIG. The disassembly work of the container body (1) is performed.

  As shown in FIG. 4, a plurality of first breaking connection lines alternately arranged in a line along the folding line folds (10) are formed in the folding line folds (10) of the connecting pieces (5). A part (10a)... And a breaking cut (10b). In this embodiment, the folding half-fold fold (10) is composed of the breaking connecting portion (10a)... And the breaking cut (10b). Then, as shown in FIG. 6, when the container main body (1) is disassembled, the breaking connecting portion (10a) is broken, thereby disassembling the container main body (1).

  On the other hand, as shown in FIG. 5, the antifouling film (30) has the same shape and the same size as the container assembly piece (20), and corresponds to all components of the container (A). It has a part. If the component part is demonstrated simply, this film | membrane for antifouling (30) is provided with the corresponding | compatible part (31) with a container main body, and the corresponding | compatible part (39) with a cover body.

  The container body corresponding portion (31) includes a bottom wall corresponding portion (32), front and rear, left and right four side wall corresponding portions (33) (34) (33) (34), and a total of four connecting piece corresponding portions (35 ) (35) (35) (35). Further, (36) is a pick piece corresponding portion, (37) is a lid receiving piece corresponding portion, and (38) is a protruding portion corresponding portion.

  And in this container (A), the cover corresponding | compatible part (39) of a film (30), the bottom wall corresponding | compatible part (32), each side wall corresponding | compatible part (33) (34) (33) (34), each connection One-side corresponding part (35) (35) (35) (35), each lid receiving piece-corresponding part (37) (37) (37), each pick piece-corresponding part (36) (36) (36) (36) and Each protrusion corresponding | compatible part (38) (38) (38) (38) is respectively the cover body (9), bottom wall (2), each side wall (3) (4) (3) (4) of a container (A). ), Each connecting piece (5) (5) (5) (5), each lid receiving piece (7) (7) (7), each knob (6) (6) (6) (6) and each protrusion It is laminated | stacked on the inner surface of a part (8) (8) (8) (8). Further, after the container is assembled, the connection piece corresponding portion (35) of the film (30) is laminated on the inner surface of the connection piece (5) of the container body (1) as shown in FIG. It is folded in half from the folding half-fold fold together with the connecting piece (5), so that it is folded into the gap between the connecting pieces (5).

  The locations where the film (30) is attached to the inner surface of the container are scattered as described above. Specifically, this is as follows. That is, the lengthwise intermediate portion and both end portions of the upper end portion of the front side wall corresponding portion (33) of the film (30) are adhered to the inner surface of the front side wall (3) of the container body (1), and left and right side walls. The middle part in the longitudinal direction at the upper end of the corresponding part (34) (34) is adhered to the inner surface of each of the left and right side walls (4) (4) of the container body (1), and the tip of the lid corresponding part (39) The middle part in the longitudinal direction and both ends of the part and both ends of the base end are stuck to the inner surface of the lid (9). That is, none of the connection piece corresponding parts (35) of the film (30) is attached to the inner surface of the connection piece (5) of the container body (1), that is, the connection piece (5) in an unattached state. It is laminated on the inner surface of. In addition, this film (30) is a portion excluding all folds (10), (11), (12), (13), and (14) interposed between adjacent portions in the container body (1) and the vicinity thereof. In addition, the container body (1) and the lid (9) are disposed at portions other than the fold (15) interposed between the rear wall (3) of the container body (1) and the lid (9) and the vicinity thereof. It is stuck on the inner surface. Examples of the peelable adhesive used for attaching the film (30) include a peelable adhesive called a so-called light release adhesive that can easily peel off an adherend. In addition, an emulsion type adhesive “TX-1286” manufactured by Todate Kasei Kogyo Co., Ltd. is listed.

  Thus, in this embodiment, the film (30) is peeled off at a predetermined position on the surface of the cardboard, which becomes the inner surface of the container, during the punching process of the container assembly piece (20). After the possible adhesive is applied, a wide and long film material is laminated, and in this state, the container assembly piece (20) is punched out simultaneously with the container assembly piece (20) by a press punching device. ) Is laminated on the entire inner surface. In this state, the container assembling piece (20) is assembled into a container, whereby the constituent parts of the film (30) are laminated on the inner surface of the corresponding part of the container (A).

  In the container (A) having the above configuration, since the lid (9) is provided integrally with the container body (1), it is necessary to manufacture the lid (9) and the container body (1) separately. The film for preventing dirt (30) is provided on the inner surface of the bottom wall (2) and the side walls (3), (4), (3), and (4) of the container body (1). ) The bottom wall corresponding part (2) and each side wall corresponding part (33) (34) (33) (34) are stacked, so foods such as fried noodles, takoyaki and oden are placed in the container body (1). Even if it is a case, the malfunction that the inner surface of the bottom wall (2) and each side wall (3) (4) (3) (4) of a container main body (1) will become dirty does not generate | occur | produce. Moreover, since the connection piece corresponding portion (35) of the antifouling film (30) is also laminated on the inner surface of the connection piece (5), the liquid seasoning is temporarily provided between the two-fold connection pieces (5). Even if liquid juice enters, contamination of the inner surface of the connecting piece (5) due to this penetration can be prevented. Furthermore, since the cover corresponding | compatible part (39) of the film (30) for dirt prevention is laminated | stacked also on the inner surface of the cover (9), after putting food into the container main body (1), the cover (9 ) Is closed, there is no problem that the inner surface of the lid (9) becomes dirty. Therefore, according to this container (A), the container (A) can be subjected to regeneration in a clean state by separating the antifouling film (30) after use.

  Furthermore, in this container (A), since the upper end part of the front side wall corresponding part (33) and each of the left and right side wall corresponding parts (34) (34) of the antifouling film (30) is adhered, When placed in the container body (1), there is no problem that food is caught on the upper edges of the side wall corresponding parts (33) (34) (34) and the film is turned up.

  Thus, after the container is used, when the antifouling film (30) is peeled off and separated from the inner surface of the container, the lid receiving piece (7) is first raised as shown in FIG. 6) is picked, and the other folding half (5b) is pulled from the pick piece (6) to the outside of the container body (1). As a result, the other folding half (5b) is broken from the breaking connecting portion (10a) and the breaking cut (10b), and the container body (1) is disassembled. Next, the projecting portion (38) of the film (30) is turned and picked from the projecting portion (8) of the container body (1), and the film (30) is peeled off. At this time, since the container body (1) is disassembled and the half-folded connecting piece (5) is in an open state, the film (30) is peeled off without being interfered with the connecting piece (5). Can do. Thus, in this container (A), since the connecting piece corresponding portion (35) of the film (30) is located between the two fold-shaped connecting pieces (5), when the film (30) is peeled off, Although there is a possibility that the film (30) may be broken at the connection piece corresponding portion (35), in this embodiment, since the two-fold connection piece (5) is open as described above, the connection piece ( 5) The film (30) can be peeled off without being interfered with, and the connecting part corresponding part (35) of the film (30) is not attached to the inner surface of the connecting piece (5). The piece corresponding part (35) can be easily taken out between the connecting pieces (5). The peeling operation of the film (30) may be performed from this part by picking a part between the adhering portions (A) and (I) adjacent to the film (30) after the container body is disassembled.

  Further, the peeling operation of the antifouling film (30) may be performed as follows. That is, as shown in FIG. 7, the outer surface of one of the left and right side walls (4) (4) is pushed by hand to tilt the side wall (4) inward. As a result, a large gap (S) is formed between the two-fold connecting pieces (5). In this state, the film (30) may be peeled off by turning over the projecting portion corresponding portion (38) of the film (30). According to this, during the peeling operation of the film (30), since a large gap (S) is formed between the two-fold connecting pieces (5), as in the case of the peeling operation, The film (30) can be peeled off without being interfered by the connecting piece (5).

  Furthermore, according to this container (A), the antifouling film (30) is adhered by a peelable adhesive, so that the film (30) is in the process of peeling the film (30) from the inner surface of the container. However, the film (30) can be peeled off neatly without causing a problem that it is broken at the sticking part (A) and a part thereof remains on the inner surface of the container. In addition, because the film (30) sticking points are scattered, the total area of the sticking part (ii) of the film (30) is small, so the film (30) can be peeled off with a slight force. it can.

  Furthermore, this container (A) has the following advantages. That is, if the antifouling film (30) is attached at the crease and in the vicinity thereof, there is a problem that the crease is hardened and hard to bend because the adhesive is hardened. On the other hand, in this container (A), the antifouling film (30) is stuck on all the folds and portions except the vicinity thereof, so such a problem does not occur, and the assembly production of the container (A) In this case, there is an advantage that the constituent parts can be easily bent.

  FIGS. 8-12 has shown the paper packaging container (B) of 2nd Embodiment of this invention. In these drawings, the same components as those of the container (A) of the first embodiment are denoted by the same reference numerals. Hereinafter, the container (B) of the second embodiment is the same as that of the first embodiment. The difference from (A) will be mainly described.

  In the container (B) of the second embodiment, the lid (not shown) is separate from the container body (1).

  Further, the container body (1) of the container (B) is, as shown in a development view in FIG. 10, similar to the first embodiment, the bottom wall (2) and the four front and rear side walls (3). (4) (3) (4) and a total of four connecting pieces (5) (5) (5) (5), but without a cover receiving piece, each side wall (3 ) (4) (3) A protruding portion (8) protrudes upward in the middle of the length direction at the upper edge of the upper edge. Further, this container body (1) is not provided with a knob. Then, as shown in FIG. 9, the connecting piece (5) is folded in half from the folding half fold (10), and in this state, one folding half (5a) is the side wall (4) on the folding half side. The side walls (3) and (4) that are adjacent to each other are connected to each other on the outer surface of the end portion.

  On the other hand, the antifouling film (30) does not have a connecting piece corresponding portion as shown in a developed view in FIG. 11, that is, the corresponding portion (31) with the container body is the bottom wall corresponding portion (32). And a crease at the edge of one side wall corresponding part (34) of the four side wall corresponding parts (33) (34) (33) (34) on the front, rear, left and right sides, and the adjacent side wall corresponding part (33) (34) And polymerized pieces (50) arranged continuously through each other. A substantially triangular protrusion (50a) protruding toward the middle portion in the length direction of the other side wall corresponding part (33) is provided at the lower edge at the tip of the overlap piece (50).

  And as shown in FIG. 9, the bottom wall corresponding | compatible part (32) and each side wall corresponding | compatible part (33) (34) (33) (34) of this film (30) are the bottom walls of a container main body (1), respectively. It is laminated | stacked on the inner surface of (2) and each side wall (3) (4) (3) (4), and is stuck in multiple places with the peelable adhesive in this state. Furthermore, as shown in the figure, the polymer piece (50) of the film (30) is polymerized on the inner surface of the end of the other side wall corresponding part (33) across the edge of the other side wall corresponding part (33). As a result, the gap between the edges of the adjacent side wall corresponding portions (33) and (34) is closed by the superposed piece (50).

  The polymer piece (50) is polymerized on the inner surface of the end of the other side wall corresponding part (33) as follows. That is, since the polymer piece (50) has the protrusion (50a), as shown in FIG. 12, the side wall (3) (4) adjacent to the container body (1) can be raised. In the middle, the back surface of the protruding portion (50a) comes into contact with the inner surface of the other side wall corresponding portion (33) obliquely with respect to the inner surface before the polymer piece (50). Furthermore, by raising the both side walls (3) and (4) of the container body (1), the projecting part (50a) slides on the inner surface of the end of the other side wall corresponding part (33) and the superposed piece (50). It guides to the inner surface side of the other side wall corresponding part (33). And when both the side walls (3) (4) of the container body (1) are in the rising posture, the polymerized piece (50) is polymerized on the inner surface of the end of the other side wall corresponding part (33). Thus, the polymer piece (50) is polymerized on the inner surface of the end of the other side wall corresponding part (33). Therefore, according to this container main body (1), when the adjacent side walls (3) and (4) are raised, the superposed piece (50) comes to the inner surface side of the other side wall corresponding part (33). It is not necessary to bend the superposed piece (50) in advance, so that it is possible to easily start up the adjacent side walls (3) and (4).

  Furthermore, according to this container main body (1), as shown in FIG. 9, since the antifouling film (30) is not laminated on the inner surface of the connecting piece (5), it is interfered with the connecting piece (5). The film (30) can be peeled off without any problems. In addition, since the gap between the edges of the adjacent side wall corresponding parts (33) and (34) is closed by the polymer piece (50), liquid seasoning and juice enter from this gap and the connecting piece (5) This prevents the contamination of the connecting piece (5) from the gap.

  The container (A) (B) according to the embodiment of the present invention has been described above. However, the present invention is not limited to the container (A) (B) according to the first and second embodiments described above. Settings can be changed.

  For example, the antifouling film (30) may be as shown in FIG. The antifouling film (30) shown in the figure is laminated on the inner surface of the container body (1) of the second embodiment, and does not have a polymerized piece. 31) is composed of a bottom wall corresponding part (32) and front, rear, left and right four side wall corresponding parts (33) (34) (33) (34). And this film (30) has bottom wall corresponding part (32) and each side wall corresponding part (33) (34) (33) (34), respectively, the bottom wall (2) and each side wall of a container main body (1). (3) It is laminated on the inner surface of (4), (3) and (4), and is stuck with an adhesive that can be peeled in this state.

  Further, the antifouling film (30) may be as shown in FIG. The antifouling film (30) shown in the figure is laminated on the entire inner surface of the container body (1) and the lid (9) of the container (A) of the first embodiment. In the film (30) of this modified example, the surface of the bottom wall (2) of the container body (1) is attached to the inner surface of the bottom wall (2) over the substantially entire surface with an adhesive capable of peeling the bottom wall corresponding part (32). In addition, on the inner surface of the three lid receiving pieces (7), (7) and (7) of the container body (1), the corresponding portions (37), (37) and (37) of the film are the lid receiving pieces. (7) It is attached by an adhesive that can be peeled along the front edge of (7) and (7). The other structure of this film (30) is the same as that shown in FIG.

  As can be seen from this modification, in the present invention, each sticking portion (A) to the inner surface of the container of the film (30) may be a dot or a line or a plane. May be. Furthermore, in this invention, it is set to 50% or less that the ratio of the total area of these sticking parts (I) to the total area of the back surface of the film (30) is set to peel off the film (30). This is desirable in that it can be performed more easily, and it is particularly desirable that this ratio be set to 30% or less.

  FIGS. 15-21 has shown the paper packaging container (C) of 3rd Embodiment of this invention. In these drawings, the same components as those of the container (A) of the first embodiment are denoted by the same reference numerals, and the configuration of the container (C) of the third embodiment is hereinafter referred to as the first embodiment. A description will be given centering on the difference from (A). The longitudinal direction of the container according to the present invention is relative, and in this specification, for convenience of explanation, among the plurality of side walls provided in the container main body, the side wall provided with the lid is continuously provided. The rear side wall.

  The container (C) of the third embodiment is assembled and manufactured from the container assembly piece (20) shown in a developed view in FIG. 18, as in the case of the first embodiment (A). In this third embodiment, the container assembly piece (20) is made of thin cardboard (for example, 0.7 to 3 mm thick).

  Further, on the entire inner surface of the container body (1) and the lid (9) of this container (C), a transparent antifouling film (30) (for example, thickness) made of PET resin shown in a development view in FIG. 10 to 100 μm) are laminated, and in this state, the film (30) is stuck at a plurality of locations by an adhesive that can be peeled off. In this 3rd Embodiment, as for each sticking part (I) of a film (30), a dotted thing and a linear thing are mixed, and a concrete sticking location is mentioned later.

  Each side wall (3) (4) (3) (4) of the container body (1) of this container (C) has an upper side length rather than a lower side length as in the case (A) of the first embodiment. Is set to be large and is formed in a substantially inverted trapezoidal shape. By setting in this way, the container (C) is a so-called tapered container in which the side walls (3), (4), (3), and (4) are obliquely rising.

  Further, at the upper edges of the left and right side walls (4) and (4), as shown in FIGS. 16 to 18, lid pressing pieces (60) and (60) for pressing the lid (9) from above are folded (13 ) (13). Furthermore, the gate-shaped 1st cut (61) is provided in the boundary of the longitudinal direction intermediate part of this right and left side wall (4), and the lid | cover holding piece (60). Further, a plurality of semi-circular film turning (turning) free portions (62) provided around the free portion at the intermediate portion in the longitudinal direction at the tip of the left and right lid pressing pieces (60). The second breaking connecting portion (63a) and the breaking cut (63b) are provided. Further, a locking piece (3a) is provided in a protruding manner in an upward projecting manner at the intermediate portion in the length direction of the upper edge of the front side wall (3).

  On the other hand, as shown in FIGS. 16 and 17, the lid (9) covers the upper surface opening of the container body (1) in a concave shape, and includes a rectangular lid body (70) and the lid body ( 70) A total of four sealing pieces (73), (74), (73) on the front, rear, left and right of the diagonally rising shape that are connected to the periphery of the folds via folds (71) (71) (71) (71) (74). A rectangular window hole (72) is provided at the center of the lid body (70). Each of the sealing polymer pieces (73) (74) (73) (74) has an upper side length longer than a lower side length, like the side walls (3) (4) (3) (4) of the container body (1). Is set to be larger and is formed in a substantially inverted trapezoidal shape.

  The lid (9) includes the upper edge of the rear sealing polymer piece (73) and the container body (1) among the front, rear, left and right sealing polymer pieces (73) (74) (73) (74). The upper edge of the rear side wall (3) is integrally connected via the fold (15). Then, as shown in FIG. 17, the lid body (9) covers the four side walls (3) (3) of the container body (1) when the lid body (70) is put on the upper surface opening of the container body (1). 4) (3) (4) It is arranged horizontally at a position slightly lower than the position of the upper edge of the upper edge, and each sealing polymer piece (73) (74) (73) (74) is placed in the container body (1). ) And the corresponding side walls (3), (4), (3), and (4) are polymerized in close contact with each other, whereby the upper surface opening of the container body (1) can be sealed. Furthermore, in this state, the periphery of the lid body (70) of the lid body (9) is in contact with the inner surfaces of the four side walls (3) (4) (3) (4) of the container body (1), Thus, the lid main body (70) is supported on the inner surfaces of the four side walls (3) (4) (3) (4) so as not to fall into the container main body (1).

  In addition, a tongue-like piece (75) is continuously provided via a fold (76) at the longitudinal intermediate portion of the upper edge of the pre-sealing superposition piece (73) of the lid (9). Furthermore, a gate-shaped second cut (77) is provided at the boundary between the longitudinal intermediate portion of the pre-sealing polymer piece (73) and the tongue-like piece (75). On the other hand, locking pieces (74a) and (74a) project from the middle portion in the longitudinal direction of the upper edges of the right and left sealing polymer pieces (74) and (74).

  Thus, as shown in FIG. 16, in the state where the lid (9) is put on the upper surface opening of the container main body (1), the tongue-like piece (75) extends from the fold (76) to the container main body ( 1) The front side wall (3) is bent to the outer surface side, and by this bending operation, the locking piece (3a) protruding from the upper edge of the front side wall (3) is placed in the second cut (77). The lid (9) is locked so as not to open unintentionally at the upper edge of the presealing polymer piece (73). Further, as shown in FIG. 20, the left and right lid pressing pieces (60) (60) of the container body (1) are connected to the right and left sealing polymer pieces (74) from the folds (13) (13) to the lid (9). ) (74) is bent to the outer surface side, and the lid (9) is pressed by the lid pressing piece (74), and by the folding operation of the lid pressing piece (60), the right and left sealing polymer pieces (74) A locking piece (74a) projecting from the upper edge of the upper and lower ends is fitted into the first cut (61), so that the lid (9) is attached to the upper edges of the right and left sealing overlapping pieces (74) and (74). And the lid (9) is firmly held in a sealed state.

  On the other hand, when unlocking the lid (9), the tongue piece (75) and the left and right lid pressing pieces (60) (60) may be raised. By doing so, these locking pieces (3a) (74a) (74a) are pulled out from the cuts (77) (61) (61), and thus the lid (9) is unlocked. .

  As shown in FIG. 19, the antifouling film (30) has portions corresponding to all the constituent portions of the container (C). To briefly explain the constituent portions, the film (30) And a corresponding part (31) with the container body and a corresponding part (39) with the lid.

  The container body corresponding portion (31) includes a bottom wall corresponding portion (32), front and rear, left and right four side wall corresponding portions (33) (34) (33) (34), and a total of four connecting piece corresponding portions (35 ) (35) (35) (35). Reference numeral (80) denotes a lid pressing piece corresponding portion. On the other hand, the lid corresponding part (39) includes a lid main body corresponding part (90) and front, rear, left and right sealing polymer piece corresponding parts (93) (94) (93) (94). Furthermore, between the edges of the adjacent sealing polymer corresponding parts (93) (94), a substantially triangular blocking part (99) is provided across both sealing polymer responding parts (93) (94). It has been. As will be described later, the closing portion (99) is for closing a gap formed between the edges of the sealing polymer pieces (73) and (74) adjacent to the lid (9). Reference numeral (95) denotes a tongue-like piece corresponding portion. In addition, the window hole is not provided in the cover main body corresponding | compatible part (90) of this film (30).

  And in this container (C), the bottom wall corresponding | compatible part (32) of a film (30), each side wall corresponding | compatible part (33) (34) (33) (34), each connection piece corresponding | compatible part (35) (35 ) (35) (35) and each lid holding piece corresponding part (80) (80) are respectively the bottom wall (2) of the container body (1), the side walls (3) (4) (3) (4), It is laminated | stacked on the inner surface of each connection piece (5) (5) (5) (5) and each lid holding piece (60) (60). Further, the lid body corresponding portion (90), each sealing polymer piece corresponding portion (93) (94) (93) (94) and the tongue-like piece corresponding portion (95) of the film (30) are respectively connected to the lid (9). ) On the inner surface of the lid main body (70), the respective polymer pieces for sealing (73) (74) (73) (74) and the tongue-like piece (75). In this laminated state, as shown in FIG. 16, the central portion of the cover body corresponding portion (90) of the film (30) is exposed from the window hole (72), and the film is placed in the window hole (72). It is in a stretched state.

  Further, as shown in FIG. 20, each closed portion (99) of the film is folded in a double fold shape on the outer surface side of the sealing polymer pieces (73) (74) in a state of covering the lid (9). Therefore, the gap between the edges of the adjacent sealing polymer pieces (73) and (74) is closed by the closing portion (99), and leakage of liquid seasonings and juice from this gap can be prevented. It has become.

  The locations where the film (30) is attached to the inner surface of the container are interspersed as shown in FIGS. 18 and 19, and the connection piece corresponding parts (35) of the film (30) are both container bodies ( 1) It is not attached to the inner surface of the connecting piece (5), and the main attachment location of the film (30) will be described. The upper end of the front side wall corresponding portion (33) of the film (30) Is attached to the inner surface of the upper end of the front side wall (3) of the container body (1) along the upper edge of the front side wall (3), and the left and right lid holding piece corresponding parts (80 ) (80) is attached to the inner surface of the distal end of each lid retainer piece (60) (60) of the container body (1) along the distal edge of the lid retainer piece (60) (60). Furthermore, the bottom wall corresponding | compatible part (2) of a film (30) is stuck by the front-back direction of this bottom wall (2) at two places of the inner surface of the bottom wall (2) of a container main body (1). Further, the lid body corresponding portion (90) of the film (30) is attached to the inner surface of the peripheral edge of the window hole (72) of the lid main body (70) of the lid (9) along the peripheral edge of the window hole (72). Furthermore, the front end portions of the film (30) corresponding to the pre-sealing polymer piece (93) and the left and right sealing polymer piece corresponding parts (94) (94) are the corresponding sealing polymers of the lid (9). Attached to the inner surface of the tip of the piece (73) (74) (74) along the tip edge of the sealing polymer piece (73) (74) (74) The tip of (95) is adhered to the inner surface of the tip of the tongue-like piece (75) of the lid (9) along the tip edge of the tongue-like piece (75). In addition, this film (30) is the same as in the first embodiment, except for all the folds (10) (11) (12) (13) (15) (71) (76) and the portion in the vicinity thereof, It is affixed on the inner surface of a container main body (1) and a cover body (9).

  The container (C) having the above configuration has the same advantages as the container (A) of the first embodiment, and in this container (C), the lid (9) is attached to the container body (1). When covering the upper surface opening, the lid body (70) is horizontally arranged at a position slightly lower than the upper edge height position of the four side walls (3) (4) (3) (4) of the container body (1), Since each of the sealing polymer pieces (73) (74) (73) (74) is polymerized on the upper inner surface of the corresponding side wall (3) (4) (3) (4) of the container body (1), the lid (9) has an advantage that it can be covered in a substantially sealed state. In addition, since the gap between the edges of the sealing polymer pieces (73) and (74) adjacent to the lid (9) is closed by the closing portion (99) of the film (30), liquid seasonings, juices, etc. There is also an advantage that it is possible to prevent the problem of leakage from the gap.

  Thus, in this container (C), the film (30) may be peeled off from the inner surface of the container as follows. That is, as shown in FIG. 21, first, the lid pressing piece (60) is raised, and then the release portion (62) is strongly pressed to the inside of the container body (1) with the fingertip. As a result, the free portion (62) is broken from the break connecting portion (63a) and the break notch (63b), and the free portion (62) is released from the lid holding piece (60). As a result, the film (30 ) Will drown in the vicinity of the free part (62). The film (30) is peeled off by picking up the drowned portion. Thus, according to this container (C), since the film (30) can be rolled by releasing the free portion (62), there is no need to perform a troublesome film turning operation, and the film is peeled off. Can be performed more easily.

  Furthermore, this container (C) can eliminate the following drawbacks in the conventional paper packaging containers.

  That is, in the conventional paper packaging container, the lid that covers the upper surface opening of the tray-shaped container body has a flat plate shape. For this reason, even if it tried to pile up a container on this after covering with a cover, there was a possibility that the piled-up container might be laterally shifted and dropped, and the container could not be piled up stably. For this reason, at work sites where food is packed in boxes, the containers must be placed in a plane on the work table after the food is placed in the container body, and the containers are packed as the number of containers increases. There was a problem that the work space was narrowed.

  Therefore, in order to allow a plurality of containers to be stably stacked with the lids covered, the paper packaging container (C) of the third embodiment includes a bottom wall (2) and the bottom wall. (2) A container body (1) having a plurality of side walls (3), (4), (3), and (4) connected to the periphery of the periphery of the container body, and covering the upper opening of the container body (1) in a concave shape. And the side wall (3) (4) (3) (4) of the container body (1) has a larger upper side length than a lower side length. On the other hand, the lid (9) includes a lid main body (70) and a plurality of sealing overlapping pieces (73) (74) (73) ( 74) and the lid body (9) is put on the upper surface opening of the container body (1), the lid body (70) is the plurality of the container body (1). Side wall (3 (4) (3) and (4) are arranged substantially horizontally at a position lower than the height position of the upper edge, and the sealing polymer pieces (73) (74) (73) (74) are arranged in the container. A configuration is adopted in which polymerization is performed on the inner surface of the corresponding side wall (3) (4) (3) (4) of the main body (1).

  According to this container (C), each side wall (3) (4) (3) (4) of the container main body (1) is set to have a larger upper side length than a lower side length. When working, a plurality of containers can be stacked with the lid open, so that the boxing work space can be used effectively, and the lid (9) is the container body (1). The lid body (70) is in a position lower than the upper edge height position of the plurality of side walls (3), (4), (3), and (4) of the container body (1) in a state of being covered with the upper surface opening of the container. As shown in FIG. 17, when the containers are stacked after covering the lid, the stacked containers are placed on the horizontally disposed lid body (70) as shown in FIG. At the same time, the bottom of the stacked container is pulled to the upper end of the side wall (3) (4) (3) (4) of the lower container. As a result, the container is prevented from falling due to the lateral displacement of the container. As a result, a plurality of containers can be stably stacked, and the boxing work space can be utilized more effectively. Has the advantage of becoming. Moreover, since each of the sealing polymer pieces (73) (74) (73) (74) is polymerized on the inner surface of the corresponding side wall (3) (4) (3) (4) of the container body (1), the lid This has the advantage that the body (9) can be covered in a substantially sealed state.

  Furthermore, the present invention can be changed in various ways. For example, the container has a relatively shallow bottom in the above embodiment, but may have a deep bottom in the present invention. Further, in the above embodiment, the antifouling film is made of thin paper or PET resin, but in the present invention, it may be made of synthetic resin such as polyethylene or polypropylene, or synthetic resin such as silicone resin may be used. It may consist of coated paper.

  Further, in the present invention, the container is provided with a hanging handle for carrying, the container mounting portion of the handle, and the distal end portions of the connecting pieces connected to the both end edges of the pair of opposing side walls. However, by connecting on the outer surface side of the side wall, adjacent side walls may be connected and the handle may be attached to the container.

1 is a perspective view of a paper packaging container according to a first embodiment of the present invention. It is a side view of a part of the container. It is the III-III sectional view taken on the line in FIG. It is an expanded view of the container. It is an expanded view of the film for dirt prevention in the container. It is a perspective view in the middle of the demolition of the container main body which shows an example of separation operation of the film for dirt prevention in the container. It is the perspective view of the state which pushed the one side wall of the container main body which shows another example of separation operation | movement of the film for dirt prevention in the container. It is a perspective view of the container for paper packaging of 2nd Embodiment of this invention. It is sectional drawing corresponding to FIG. 3 of the same container. It is an expanded view of the container. It is an expanded view of the film for dirt prevention in the container. It is a perspective view in the middle of the assembly of the container. It is an expanded view of the film | membrane for dirt prevention which shows the modification of the film for dirt prevention in the paper packaging container of the said 2nd Embodiment. It is an expanded view of the film for dirt prevention which shows the modification of the film for dirt prevention in the paper packaging container of the 1st embodiment of the above. It is a perspective view of the container for paper packaging of 3rd Embodiment of this invention. It is a perspective view which shows the same container in the state which closed the cover body. It is sectional drawing of the container. It is an expanded view of the container. It is an expanded view of the film for dirt prevention in the container. It is an expansion perspective view of the container. It is a perspective view of the state in the middle of releasing the free part for film winding which shows an example of separation operation of the film for dirt prevention in the container.

Explanation of symbols

A, B, C ... containers
1 ... Container body
2 ... Bottom wall
3, 4 ... sidewall
5 ... Connecting piece
6 ... Tip piece for dismantling the container body
9 ... Lid
10 ... Folding fold
30 ... Antifouling film
31 ... Parts for container body
32… Parts corresponding to the bottom wall
33, 34 ... Side wall compatible parts
35 ... Linked part compatible part
39… Cover body corresponding part
50 ... polymerized piece
I ... Sticking part

Claims (11)

A paper food packaging container in which an antifouling film (30) for preventing fouling due to contact with food is laminated on the inner surface and adhered at a plurality of locations with a peelable adhesive,
The peelable adhesive is of an emulsion type,
The container body (1) includes a bottom wall (2), a plurality of side walls (3) (4) (3) (4) provided in the circumferential direction on the periphery of the bottom wall, and adjacent side walls ( 3) A connecting piece (5) interposed between the end edges of (4), and the connecting piece (5) is connected to the end edge of each side wall, and is a fold half fold (10). It consists of a pair of folding halves (5a) (5b) that are connected to each other, and the adjacent side walls (3) and (4) are folded in two from the fold-half fold (10). In the state where it is bent into a shape, one of the folded halves (5a) is connected to the outer surface of the side wall (4) on the folded halves side, thereby being connected,
In the film (30), the corresponding part (31) with the container body corresponds to the bottom wall corresponding part (32), each side wall corresponding part (33) (34) (33) (34), and each connecting piece. The bottom wall corresponding part and each side wall corresponding part are respectively laminated on the bottom wall of the container body and the inner surface of each side wall, and the parts (35) (35) (35) (35) The connection piece corresponding portion (35) is laminated on the inner surface of the connection piece (5) and in this state is folded in a double fold with the connection piece (5).
The container is assembled from a container assembly piece (20),
A film material for preventing soiling is laminated on the surface of the paper for obtaining the container assembling piece (20) on the side which is the inner surface of the container, after the peelable adhesive is applied, and in this state, the paper And the film material are simultaneously punched into the shape of a container assembly piece to obtain a container assembly piece (20) and a stain prevention film (30) is laminated on the entire inner surface of the container assembly piece. And
In this state, by assembling the container assembly piece (20) into a container, the connection piece corresponding portion (35) of the film (30) is laminated on the inner surface of the connection piece (5). It is folded in half with the connecting piece (5),
The ratio of the total area of the sticking part (A) to the inner surface of the container of the film (30) with respect to the total area of the back surface of the film (30) is set to 30% or less, and at this ratio, the film A paper food packaging container, wherein the film (30) is held in a state of being laminated on the inner surface of the container by being attached to the inner surface of the container.   The paper food packaging container according to claim 1, wherein the one folded half (5a) is adhered to the outer surface of the side wall (4) on the folded half side with an emulsion adhesive.   3. The paper food packaging container according to claim 1, wherein each of the sticking portions (a) of the film (30) to the container inner surface is a spot having a diameter of 3 to 10 mm.   The paper (1) according to claim 1 or 2, wherein the film (30) is attached to the inner surface of the container (a) in which a dot-like one having a diameter of 3 to 10 mm and a linear one are mixed on the inner surface of the container. Food packaging container. A lid (9) is integrally provided on the container body (1),
The film (30) is further provided with a corresponding part (39) with the lid provided integrally with the corresponding part (31) with the container body, and the lid corresponding part (39) Laminated on the inner surface of the lid (9),
And at least the length direction both ends in the front-end | tip part and the length direction both ends in the base end part of the said cover corresponding | compatible part (39) are affixed on the inner surface of the said cover (9). The container for paper-made food packaging of any one of -4.   The container for paper-made food packaging according to any one of claims 1 to 5, wherein the connecting piece corresponding portion (35) is laminated on the inner surface of the connecting piece (5) in a non-sticking state.   The paper food packaging according to any one of claims 1 to 6, wherein at least a breaking cut (10b) is provided in the folding half fold (10) of the connecting piece along the folding half fold. Container.   The paper food packaging container according to any one of claims 1 to 7, wherein an upper portion of each side wall corresponding part (33) (34) (33) (34) is adhered.   The paper food packaging container according to any one of claims 1 to 8, wherein a part of the container is provided with a free part (62) for turning the film through at least a breaking cut (63b). On the outer peripheral edge of the container, a film winding protrusion (8) protrudes,
The film (30) further includes a corresponding portion (38) with the protruding portion, and the protruding portion corresponding portion (38) is laminated on the inner surface of the protruding portion (8), so that the film (30) The paper food product according to any one of claims 1 to 9, wherein at the start of a peeling operation, the projecting portion corresponding portion (38) is a portion that is beaten and picked from the inner surface of the projecting portion (8). Packaging container. In the container, adjacent parts are arranged continuously through folds,
The paper food packaging container according to any one of claims 1 to 10 , wherein the film (30) is adhered to a portion other than all folds and the vicinity thereof.