JP2004203493A - Paper-made food packaging container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a paper-made food packaging container which can serve for recycling in a clean state by making the container and an anti fouling film laminated and stuck to an internal surface of the container easy to separate. <P>SOLUTION: The container A consists of a container body 1 and a lid 9 integrally provided with the container body. The container body 1 is constituted of a bottom wall 2, four sidewalls 3, 4, 3 and 4 on the front, rear, left and right provided side by side in the peripheral direction on the periphery of the bottom wall, and coupling pieces 5 interposed between end rims of the adjacent sidewalls 3 and 4. The adjacent sidewalls 3 and 4 are coupled with each other by the coupling piece 5 stuck to the external surface of one of the sidewalls 4. The anti fouling film 30 for preventing the contamination due to contact with food is laminated on the internal surface of the container body 1 and the lid 9. The film 30 is stuck at a plurality of portions (adhesive parts) via a peelable adhesive in this state. An overlapping piece 50 of the film 30 is overlaid on the internal surface at an end of a sidewall corresponding region 33 of the film 30. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

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

  2. Description of the Related Art Conventionally, trays of foamed plastic packaging are generally used as containers for packaging foods such as fried noodles, takoyaki, and oden in an event hall, a baseball stadium, and the like. The reason why such foamed plastic packaging containers are preferably used is that they are lightweight, that they have sufficient shape retention properties, liquid seasonings such as sauces and soy sauce applied to the surface of food, or This has the advantage that the liquid juice leached from the food and further the liquid juice of the stewed food do not soak into the container.

  However, such foamed plastic packaging containers are somewhat problematic in terms of disposal. In other words, since foamed plastic does not decompose spontaneously, it must be incinerated when it is disposed of, but at the time of incineration, harmful gases that adversely affect the human body are generated. Further, there is a problem that the life of the incinerator is shortened due to extremely large combustion heat generated at the time of incineration.

Therefore, tray-shaped paper packaging containers have recently been used as an alternative to such foamed plastic packaging containers. According to this paper container, the above-mentioned problem does not occur when disposing of the paper container.However, when packaging food using this paper container, a liquid seasoning or sap is immersed in the container. This causes a problem that the inner surface of the container gets dirty. It is difficult to recycle a container having a dirty inside surface as paper. Therefore, in order to prevent the inside of the container from being stained, a paper having a water- and oil-resistant film such as a synthetic resin film laminated on one side is used, and this is assembled and manufactured so that the film becomes the inner surface. Paper containers have been proposed.
JP-A-10-291279 (Claim 1)

  However, according to this paper container, since the film is completely 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 recycle the container as paper. I was

  The present invention has been made in view of the above technical background, and an object of the present invention is to make a container and a film for preventing contamination easy to separate from each other, and to make the container available for regeneration in a clean state. An object of the present invention is to provide a food packaging container.

  In order to achieve the above object, the paper packaging container according to the first aspect of the present invention has an inner surface on which an antifouling film for preventing soiling due to contact with food is laminated and is provided at a plurality of locations with a peelable adhesive. Wherein the container body has a bottom wall, a plurality of side walls provided in a circumferential direction on a periphery of the bottom wall, and an edge of an adjacent side wall. And a connecting piece interposed therebetween, and the connecting piece is composed of a pair of folded halves connected to the edge of each side wall and connected to each other via a folding fold. Are connected to each other by sticking one of the halves to an outer surface of a side wall of the half in a state where the connection piece is folded in two from the fold for the half. Is a part corresponding to the bottom wall, Each of the side wall corresponding portions, and the overlap piece is provided continuously to the edge of one of the side wall corresponding portions of the adjacent side wall corresponding portions, and the bottom wall corresponding portion and each side wall corresponding portion, The gap between the edges of the adjacent side wall corresponding portions is formed by being laminated on the inner surfaces of the bottom wall and the respective side walls of the container main body and the overlapping piece on the end inner surface of the other side wall corresponding portion. It is characterized in that the film is not laminated on the inner surface of the connection piece of the container body while being closed by the polymer piece.

  According to a second aspect of the present invention, in the paper food packaging container according to the first aspect of the present invention, the lower end portion of the top end of the overlapped piece protrudes toward the middle portion in the length direction of the other side wall corresponding portion. Is adopted.

  According to a third aspect, in the paper food packaging container according to the first or second aspect of the present invention, a configuration is adopted in which the upper portions of the respective side wall corresponding portions are adhered.

  According to a fourth aspect of the present invention, in the paper food packaging container according to any one of the first to third aspects of the present invention, a part of the container has a plurality of free portions for turning a film and a plurality of connecting portions for breaking and breaking. The structure provided through the cut line was adopted.

  According to a fifth aspect, in the paper food packaging container according to any one of the first to fourth aspects, the film adopts a configuration made of paper.

  In a sixth aspect, in the paper food packaging container according to any one of the first to fifth aspects of the present invention, the container is configured such that adjacent portions are continuously provided via a fold, A configuration was adopted in which the film was stuck at all the folds and at portions other than the vicinity thereof.

  Since the paper food packaging container according to the present invention has an inner surface on which an antifouling film for preventing dirt due to contact with food is laminated and adhered, for example, sauce or soy sauce on the surface such as fried noodles or takoyaki Even when a food such as oden or the like which is coated with a liquid seasoning or a food such as oden is put in a container, it is possible to prevent the inside of the container from being stained. Furthermore, since this container is bonded with a peelable adhesive, the film is torn at the sticking portion while the film is being peeled off from the inner surface of the container, 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. Moreover, in this container, since the film is stuck at a plurality of locations, the total area of the stuck portion of the film is small, so that the conventional paper container in which the film is stuck all over the inner surface of the container is used. In comparison, the film can be peeled off with a small force, and when peeling the film, the portion between the adhesive portions of the film can be pinched, and the film peeling operation can be performed from this portion. Therefore, there is also an advantage that the film peeling operation can be easily performed.

  In addition, the film is not laminated on the inner surface of the connecting piece, so that the film can be peeled off without being interfered by the connecting piece, so that the film peeling operation can be easily performed. Have.

  Further, since the overlapping piece is overlapped on the inner surface of the end portion of the other side wall corresponding portion, the gap between the edges of the adjacent side wall corresponding portion will be closed by this overlapping piece. This has the advantage that contamination of the connecting piece can be prevented.

  Further, in the paper food packaging container according to the present invention, the lower end portion of the top end of the superposed piece is provided with the protruding portion protruding toward the middle portion in the length direction of the other side wall corresponding portion, so that it is adjacent to the other side portion. At the time of the rising operation of the side walls, the back surface of the protruding portion abuts on the inner surface of the end of the corresponding portion of the other side wall before the overlapping piece, and the overlapping piece is guided to the inner surface side of the corresponding portion of the other side wall. Become like As a result, at the time of the rising operation of the adjacent side walls, it is not necessary to bend the overlapping piece in advance so that the overlapping piece comes to the inner side of the corresponding portion of the other side wall. It has the advantage that it can be easily performed.

  Further, the paper food packaging container according to the present invention, since the upper portion of each side wall corresponding portion is affixed, when the food is put in the container, the food is caught on the upper edge of the film, the film is The problem of turning over can be prevented.

  In addition, the paper food packaging container according to the present invention, a part of the container, the film winding free portion is provided through a plurality of break connection portion and break notch, the free portion is provided. By pressing the inside of the container body by hand to release the release portion from the container, the film can be turned up, and this has the advantage that the film can be more easily peeled off.

  Further, the paper food packaging container according to the present invention, since the film is made of paper, when burning the film peeled from the inner surface of the container, synthetic resin such as generation of harmful gas and shortening the life of the incinerator. There is an advantage that the film can be incinerated without causing the problem of incineration of the film.

  Further, the paper food packaging container according to the present invention is such that adjacent portions are continuously provided via a fold, and the film is stuck at a portion except for all the folds and the vicinity thereof. Therefore, the problem that the adhesive is hardened and the fold portion is difficult to bend is prevented, and therefore, this container has an advantage that the component can be easily bent when assembling and manufacturing the container. .

  Next, an embodiment of the present invention will be specifically described based on the drawings.

  1 to 7 show a paper packaging container (A) according to a first embodiment of the present invention. This container (A) is, for example, a packaged product, not shown, used for packaging foods such as fried noodles and takoyaki, which are coated with a liquid seasoning on the surface thereof, and foods which have a liquid juice such as oden. As shown in FIG. 1, a so-called lid is provided in which a flat lid (9) is integrally provided on a tray-shaped container body (1).

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

  Further, as shown in FIG. 3, on the entire inner surface of the container body (1) and the lid (9) of the container (A), a paper-made dirt prevention film (30) for preventing dirt due to contact with food. ) Are laminated, and in this state, the film (30) is adhered at a plurality of locations with a peelable adhesive. In FIG. 1, (a) shows the sticking portions of the film (30), and each sticking portion (a) is a dot having a diameter of 3 to 10 mm. As can be seen from FIG. 1, the sticking points of the film (30) are scattered, and specific sticking points will be described later.

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

  The container (A) is assembled from the container assembling piece (20) shown in FIG. 4 as described above, and the container body (1) has a square bottom wall. (2) and four front, rear, left and right side walls (3) (4) which are continuously arranged on the periphery of the bottom wall (2) in the circumferential direction through folds (11), (11), (11), and (11). And (3) (4) and a total of two side walls (3) and (4) interposed between the edges of the adjacent side walls (3) and (4) and connected on the outer surface side of one of the side walls (4). It consists of four connecting pieces (5), (5), (5) and (5).

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

  In each of the four side walls (3), (4), (3) and (4), the upper edges of the front side wall (3) and the left and right side walls (4) and (4) are provided with lid receiving pieces (13) through folds (13). 7) are connected to the outside in a protruding manner. Further, substantially semicircular protrusions (8) are protrudingly provided at both ends in the longitudinal direction at the ends of the left and right lid receiving pieces (7) and (7).

  Each of the connecting pieces (5) includes a pair of substantially triangular folded halves (5a) and (5b) connected to each other via a half-fold crease (10). One of the half halves (5a) of the pair of half halves (5a) (5b) is connected to the edge of the side wall (4) on the half halves via a fold (12), The other half (5b) is connected to the edge of the side wall (3) on the side of the half via a fold (12). Then, as shown in FIG. 3, the connecting piece (5) is folded in two from the half-folded fold (10) and folded in half, and in this state, one half (5a) is folded. The side wall (4) on the half-side is affixed to the outer surface of the end portion with an emulsion type adhesive, whereby the adjacent side walls (4) and (3) are connected to each other and held in a standing posture. At the upper edge of the other half part (5b), a substantially trapezoidal container body dismantling knob (6) is projected through a fold (14). As shown in FIGS. 1 and 2, the tab (6) is bent from the fold (14) and overlaps the lower surface of the lid receiving piece (7), whereby the lid receiving piece (7) is moved outward. It is held in a one-sided protruding posture. Further, when the container body (1) is disassembled, the knob (6) is picked up after the lid receiving piece (7) is raised, as shown in FIG. Dismantling work of the container body (1) is performed.

  As shown in FIG. 4, a plurality of first breaking connections arranged alternately in a line along the half-fold folds (10) are provided on the half-fold folds (10) of the connection pieces (5). A part (10a) and a break notch (10b) are provided. In this embodiment, the half-fold fold (10) is composed of the rupture connecting portions (10a)... And the rupture cuts (10b). Then, as shown in FIG. 6, when the container body (1) is dismantled, the connecting portions (10a) for breaking are broken, whereby the container body (1) is dismantled.

  On the other hand, as shown in FIG. 5, the antifouling film (30) has the same shape and the same size as the container assembling piece (20), and corresponds to all components of the container (A). It has a part. In brief, the components of the film (30) include a portion (31) corresponding to the container body and a portion (39) corresponding to the lid.

  The container body corresponding portion (31) includes a bottom wall corresponding portion (32), front, 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) and (35). Further, (36) is a portion corresponding to the knob, (37) is a portion corresponding to the lid receiving piece, and (38) is a portion corresponding to the protrusion.

  In this container (A), the film (30) corresponds to the lid (39), the bottom wall (32), the side walls (33), (34), (33), (34), One corresponding part (35) (35) (35) (35), each lid receiving part corresponding part (37) (37) (37), each knob corresponding part (36) (36) (36) (36) and The corresponding portions (38), (38), (38), and (38) of the protruding portions are respectively the lid (9), the bottom wall (2), and the side walls (3), (4), (3), and (4) of the container (A). ), Each connecting piece (5) (5) (5) (5), each lid receiving piece (7) (7) (7), each knob piece (6) (6) (6) (6) and each protrusion The parts (8), (8), (8), and (8) are stacked on the inner surface. Further, after assembling the container, the connecting piece corresponding portion (35) of the film (30) is laminated on the inner surface of the connecting piece (5) of the container body (1) as shown in FIG. The connecting piece (5) is folded in two from the half-folded fold together with the connecting piece (5), thereby being folded into the gap between the connecting pieces (5).

  The locations where the film (30) is adhered to the inner surface of the container are scattered as described above, and this is specifically described as follows. That is, an intermediate portion and both ends in the longitudinal direction at the upper end of the front wall corresponding portion (33) of the film (30) are adhered to the inner surface of the front wall (3) of the container body (1), The middle part in the longitudinal direction at the upper end of the corresponding part (34) (34) is attached 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 and both ends in the length direction of the part and both ends of the base end are adhered to the inner surface of the lid (9). That is, none of the connecting piece corresponding portions (35) of the film (30) is attached to the inner surface of the connecting piece (5) of the container body (1), that is, the connecting piece (5) is not attached. It is laminated on the inner surface of. In addition, this film (30) is provided at all portions except for the folds (10), (11), (12), (13), (14) and the vicinity thereof, which are interposed between adjacent portions of the container body (1). The container body (1) and the lid (9) have a fold (15) interposed between the rear side wall (3) and the lid (9) and a portion other than the fold (15). It is stuck on the inside. As the peelable adhesive used at the time of attaching the film (30), a peelable adhesive called a so-called light peel adhesive which can easily peel off the adherend is mentioned, for example, Emulsion type adhesive "TX-1286" manufactured by Tohatsu 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 that is to be the inner surface of the container during the punching step of the container assembly piece (20). After the possible adhesive is applied, the wide and long film material is laminated, and in this state, the container blank (20) is punched at the same time as the container blank (20) by a press punching device. ) Is laminated on the entire inner surface. Then, the container assembling piece (20) is assembled into a container in this state, whereby each component of the film (30) is laminated on the inner surface of the corresponding portion 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 separately manufacture the lid (9) and the container body (1). In addition to the fact that it is of high production efficiency, the antifouling film (30) is formed on the inner surface of the bottom wall (2) and the side walls (3), (4), (3) and (4) of the container body (1). ) And the corresponding side walls (33), (34), (33), and (34) are stacked, so that food such as fried noodles, takoyaki, and oden are placed in the container body (1). Even in this case, the problem that the bottom wall (2) of the container body (1) and the inner surfaces of the side walls (3), (4), (3) and (4) are not stained does not occur. In addition, since the connecting piece corresponding portion (35) of the antifouling film (30) is also laminated on the inner surface of the connecting piece (5), if the half-folded connecting piece (5) is used as a liquid seasoning, Even if liquid or juice enters, it is possible to prevent contamination of the inner surface of the connecting piece (5) due to the intrusion. Furthermore, since the lid-corresponding portion (39) of the antifouling film (30) is also laminated on the inner surface of the lid (9), the lid (9) is placed after the food is put into the container body (1). ) Does not cause a problem that the inner surface of the lid (9) becomes dirty. Therefore, according to the container (A), the container (A) can be regenerated in a clean state by separating the antifouling film (30) after using the container.

  Further, in this container (A), since the upper end portions of the front wall corresponding portion (33) and the left and right side wall corresponding portions (34) and (34) of the stain prevention film (30) are adhered, When the food is put into the container body (1), the problem that the food is caught on the upper edges of the side wall corresponding portions (33), (33), and (34) and the film is turned up does not occur.

  Thus, when the dirt preventing film (30) is peeled off from the inner surface of the container after use of the container and separated, as shown in FIG. 6, the lid receiving piece (7) is first raised and the knob ( 6), and the other half (5b) is pulled from the knob (6) to the outside of the container body (1). Thereby, the other half part (5b) is broken from the breaking connection part (10a) and the breaking notch (10b), and the container body (1) is disassembled. Next, the projecting portion (38) of the film (30) is flipped over from the projecting portion (8) of the container body (1), and the film (30) is peeled off. At this time, since the container main body (1) is disassembled and the two-folded connection piece (5) is in an open state, the film (30) can be peeled off without interference with the connection piece (5). Can be. Thus, in the container (A), since the connecting piece corresponding portion (35) of the film (30) is between the two-folded connecting pieces (5), when the film (30) is peeled off, Although the film (30) may be broken at the connecting piece corresponding portion (35), in this embodiment, since the two-folded connecting piece (5) is in an open state as described above, the connecting piece ( 5) The film (30) can be peeled off without interference, and since the connecting piece corresponding portion (35) of the film (30) is not attached to the inner surface of the connecting piece (5), The corresponding portion (35) can be easily taken out from between the connecting pieces (5). The operation of peeling off the film (30) may be performed by removing a portion of the film (30) between the adhering portions (a) and (a) after disassembly of the container body.

  Further, the operation of peeling off the stain prevention 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 incline the side wall (4) inward. As a result, a large gap (S) is formed between the two folded connection pieces (5). After setting in this state, the film (30) may be peeled off by pulling up the portion (38) corresponding to the projecting portion of the film (30). According to this, at the time of the peeling operation of the film (30), a large gap (S) is formed between the two-folded connecting pieces (5). The film (30) can be peeled off without being interfered by the connecting piece (5).

  Further, according to the container (A), the film (30) is adhered to the film (30) with a peelable adhesive, so that the film (30) is peeled off from the inner surface of the container. The film (30) can be peeled off neatly without causing a problem that the film (30) is broken at the sticking portion (a) and a part thereof remains on the inner surface of the container. In addition, since the attachment points of the film (30) are scattered, the total area of the attachment portion (a) of the film (30) is small, so that the film (30) can be peeled off with a small force. it can.

  Further, the container (A) has the following advantages. That is, if the antifouling film (30) is adhered to the fold and the vicinity thereof, there is a problem that the fold is hardened due to the solidification of the adhesive, and it is difficult to bend. On the other hand, in the case of the container (A), since the antifouling film (30) is stuck on all the folds and portions other than the vicinity thereof, such a problem does not occur. In this case, there is an advantage that the component can be easily bent.

  8 to 12 show a paper packaging container (B) according to a second embodiment of the present 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 container (B) of the second embodiment is hereinafter referred to as the container (A) of the first embodiment. The following description focuses on the differences from FIG.

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

  Further, as shown in an exploded view in FIG. 10, the container body (1) of the container (B) has a bottom wall (2) and four front, rear, left and right side walls (3) as in the first embodiment. (4) (3) (4) and a total of four connecting pieces (5), (5), (5) and (5), but without a lid receiving piece, each side wall (3 (4) (4) A projection (8) is provided in the middle of the upper edge of the upper edge in the length direction so as to protrude upward. Further, the container body (1) is not provided with a knob. Then, as shown in FIG. 9, the connecting piece (5) is folded in two from the half-folded fold (10), and in this state, one half (5a) is folded into the side wall (4) on the half-half side. Is attached to the outer surface of the end portion, thereby connecting the adjacent side walls (3) and (4) to each other.

  On the other hand, the antifouling film (30) does not have a portion corresponding to the connecting piece as shown in the development view in FIG. 11, that is, the portion (31) corresponding to the container body is the portion corresponding to the bottom wall (32). And a fold at the edge of one of the side wall corresponding portions (34) of the front, rear, left and right four side wall corresponding portions (33), (34), (33), (34) and the adjacent side wall corresponding portions (33), (34). And a superposed piece (50) provided continuously through the intermediary. A substantially triangular protrusion (50a) protruding toward the middle portion in the longitudinal direction of the other side wall corresponding portion (33) is provided at the lower edge portion at the tip of the overlap piece (50).

  Then, as shown in FIG. 9, the portion (32) corresponding to the bottom wall of the film (30) and the corresponding portions (33), (34), (33), and (34) of the side walls respectively correspond to the bottom wall of the container body (1). (2) and the side walls (3), (4), (3), and (4) are laminated on the inner surface, and in this state, are adhered at a plurality of locations with a peelable adhesive. Further, as shown in the same figure, a superposed piece (50) of the film (30) is superimposed on the inner surface of the end of the other side wall corresponding portion (33) across the edge of the other side wall corresponding portion (33). As a result, the gap between the edges of the adjacent side wall corresponding portions (33) and (34) is closed by the overlapping piece (50).

  The superposed piece (50) is superposed on the inner surface of the end of the other side wall corresponding portion (33) as follows. That is, since the overlapping piece (50) has the protruding portion (50a), as shown in FIG. 12, the operation for starting up the adjacent side walls (3) and (4) of the container body (1) is performed. On the way, the back surface of the protruding portion (50a) comes into contact with the inner surface of the end of the other side wall corresponding portion (33) obliquely with respect to the inner surface before the overlapping piece (50). Further, by raising both side walls (3) and (4) of the container body (1), the protruding portion (50a) slides on the inner surface of the end of the other side wall corresponding portion (33) to remove the polymerized piece (50). It is guided to the inner surface side of the other side wall corresponding portion (33). Then, when the side walls (3) and (4) of the container body (1) are in the upright posture, the superposed piece (50) is superposed on the inner surface of the end of the other side wall corresponding portion (33). In this way, the superposed piece (50) is superposed on the inner surface of the end of the other side wall corresponding portion (33). Therefore, according to this container main body (1), when the adjacent side walls (3) and (4) are set up, the overlapping piece (50) comes to the inner surface side of the other side wall corresponding portion (33). It is not necessary to bend the overlapped piece (50) in advance, so that the operation of raising the adjacent side walls (3) and (4) can be easily performed.

  Furthermore, according to this container 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 by the connecting piece (5). The film (30) can be peeled off without any trouble. In addition, since the gap between the edges of the adjacent side wall corresponding portions (33) and (34) is closed by the overlapping piece (50), the liquid seasoning and liquid juice infiltrate from this gap and the connecting piece (5). This does not cause a problem that the connecting piece (5) is stained, and the connecting piece (5) can be prevented from being stained from this gap.

  Although the containers (A) and (B) according to the embodiment of the present invention have been described above, the present invention is not limited to the containers (A) and (B) according to the first and second embodiments. Settings can be changed.

  For example, the stain prevention film (30) may be the one 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, that is, a portion corresponding to the container body (1). 31) is composed of a bottom wall corresponding portion (32) and front, rear, left and right four side wall corresponding portions (33), (34), (33), (34). The film (30) has a bottom wall corresponding portion (32) and respective side wall corresponding portions (33), (34), (33), and (34) formed by a bottom wall (2) and respective side walls of the container body (1). (3) (4) It is laminated on the inner surface of (3) and (4), and in this state, it is attached with a peelable adhesive.

  Further, the film (30) for preventing contamination may be the one shown in FIG. The antifouling film (30) shown in the figure is laminated on the entire inner surfaces 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 portion corresponding to the bottom wall (32) of the film is adhered to the inner surface of the bottom wall (2) of the container body (1) over substantially the entire surface with a peelable adhesive. At the same time, on the inner surfaces of the three lid receiving pieces (7), (7), (7) of the container body (1), the lid receiving piece corresponding portions (37), (37), (37) are provided with the lid receiving pieces. (7) (7) Affixed with a peelable adhesive along the leading edge of (7). Other configurations of the film (30) are the same as those shown in FIG.

  As can be seen from this modified example, in the present invention, each sticking portion (a) of the film (30) to the inner surface of the container may have a linear shape or a planar shape as well as a point shape. May be. Furthermore, in the present invention, the ratio of the total area of these adhesive portions (a) to the total area of the back surface of the film (30) is set to 50% or less, which means that the film (30) is peeled off. It is desirable in that it can be more easily performed, and it is particularly desirable that this ratio is set to 30% or less.

  15 to 21 show a paper packaging container (C) according to a third embodiment of the present 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 configuration of the container (C) of the third embodiment will be referred to as the first embodiment. (A) will be mainly described. Note that the front-rear direction of the container according to the present invention is relative, and in this specification, for convenience of description, of the plurality of side walls provided in the container body, the side wall on which the lid is continuously provided is referred to as a side wall. It is a rear wall.

  The container (C) of the third embodiment is assembled and manufactured from the container assembling piece (20) shown in an exploded view in FIG. 18, similarly to the container (A) of the first embodiment. In the third embodiment, the container assembling piece (20) is made of a thin corrugated cardboard (for example, 0.7 to 3 mm in thickness).

  Further, on the entire inner surface of the container body (1) and the lid (9) of the container (C), a transparent antifouling film (30) (for example, having a thickness of 10 to 100 μm), and in this state, the film (30) is adhered at a plurality of locations with a peelable adhesive. In the third embodiment, the sticking portions (a) of the film (30) include both dot-like portions and linear-like sticking portions, and specific sticking portions will be described later.

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

  As shown in FIGS. 16 to 18, lid holding pieces (60) (60) for pressing the lid (9) from above are provided at the upper edges of the left and right side walls (4) and (4). ) (13). Further, a gate-shaped first cut (61) is provided at a boundary between the longitudinally intermediate portion of each of the left and right side walls (4) and the lid pressing piece (60). Furthermore, a semicircular film turning (turning) release portion (62) is provided around the release portion at the longitudinally intermediate portion at the distal end portion of each of the left and right lid pressing pieces (60). Are provided via the second break connection portion (63a) and the break notch (63b). In addition, a locking piece (3a) protrudes upward at a middle portion in the longitudinal 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) is a concave-shaped cover over the upper surface opening of the container body (1), and has a rectangular lid body (70) and the lid body (1). A total of four sealing polymer pieces (73), (74), (73), which are obliquely standing up, down, left, right, and left, connected to the periphery of 70) 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), and (74) has an upper side length longer than a lower side length, similarly to the side walls (3), (4), (3), and (4) of the container body (1). Is set to be larger and is formed in a substantially inverted trapezoidal shape.

  The lid (9) is provided between the front and rear sealing polymer pieces (73), (74), (73) and (74), the upper edge of the rear sealing polymer piece (73) and the container body (1). The upper edge of the rear side wall (3) is integrally connected via a fold (15). Then, as shown in FIG. 17, the lid body (70) is covered with the upper surface opening of the container body (1), and the lid body (70) is attached to the four side walls (3) (3) (4) of the container body (1). 4) (3) (4) It is arranged horizontally at a position slightly lower than the height of the upper edge, and each sealing polymer piece (73) (74) (73) (74) is placed in the container body (1). ) Are superimposed substantially in close contact with the upper inner surfaces of the corresponding side walls (3), (4), (3) and (4), whereby the upper opening of the container body (1) can be sealed. Further, 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) and (4) of the container body (1), Thus, the lid body (70) is supported by the inner surfaces of the four side walls (3), (4), (3), and (4) so as not to fall into the container body (1).

  Further, a tongue-shaped piece (75) is continuously provided through a fold (76) at a longitudinally intermediate portion of the upper edge of the front sealing polymer piece (73) of the lid (9). Further, a gate-shaped second cut (77) is provided at a boundary between the longitudinally intermediate portion of the front sealing polymer piece (73) and the tongue piece (75). On the other hand, locking pieces (74a) (74a) are protrudingly provided at the middle portions in the longitudinal direction of the upper edges of the left and right sealing polymer pieces (74) (74).

  As shown in FIG. 16, when the lid (9) is covered with the upper opening of the container body (1), the tongue-like piece (75) is moved from the fold (76) to the container body ( 1) is bent toward the outer surface of the front side wall (3), and by this bending operation, the locking piece (3a) protruding from the upper edge of the front side wall (3) is inserted into the second cut (77). The lid (9) is thereby locked so that it does not inadvertently open at the upper edge of the front sealing polymer strip (73). Further, as shown in FIG. 20, the left and right lid pressing pieces (60) (60) of the container body (1) are separated from the folds (13) and (13) by the left and right sealing polymer pieces (74) of the lid body (9). ) (74) is bent to the outer surface side and the lid body (9) is pressed by the lid pressing piece (74), and the left and right sealing polymer pieces (74) are bent by the bending operation of the lid pressing piece (60). A locking piece (74a) protruding from the upper edge of the sealing member (74a) is fitted into the first cut (61), whereby the lid (9) is moved to the left and right sealing polymer pieces (74) (74). The lid (9) is locked so as not to open unintentionally, and the lid (9) is securely held in a sealed state.

  On the other hand, when releasing the lock of the lid (9), the tongue-shaped piece (75) and the left and right lid pressing pieces (60), (60) may be raised. By doing so, the locking pieces (3a), (74a), and (74a) are pulled out from the cuts (77), (61), and (61), whereby the lock of the lid (9) is released. .

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

  The container body corresponding portion (31) includes a bottom wall corresponding portion (32), front, 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) and (35). (80) is a portion corresponding to the lid pressing piece. On the other hand, the lid corresponding portion (39) includes a lid main body corresponding portion (90) and front, rear, left and right sealing polymer strip corresponding portions (93), (94), (93), and (94). In addition, a substantially triangular closed portion (99) is provided between the edges of the adjacent sealing polymer strip corresponding portions (93) and (94) across both sealing polymer strip corresponding portions (93) and (94). Have been. The closing portion (99) is for closing a gap formed between the edges of the sealing polymer pieces (73) (74) adjacent to the lid (9) as described later. (95) is a tongue-shaped piece corresponding site. The film (30) is not provided with a window hole in the portion (90) corresponding to the lid body.

  In the container (C), the portion (32) corresponding to the bottom wall of the film (30), the portions (33), (34), (33), (34) corresponding to the side walls, and the portions (35), (35) corresponding to the connecting pieces. ) (35) (35) and the corresponding portions (80) (80) of the lid holding pieces are respectively the bottom wall (2) of the container body (1), the side walls (3) (4) (3) (4), The connecting pieces (5), (5), (5), (5) and the lid holding pieces (60), (60) are laminated on the inner surface. Further, the lid body corresponding portion (90), the sealing polymer piece corresponding portions (93), (94), (93) (94) and the tongue piece corresponding portion (95) of the film (30) are respectively provided with the lid (9). ), The sealing polymer pieces (73), (74), (73), (74) and the tongue-shaped piece (75). In this laminated state, as shown in FIG. 16, the central portion of the portion (90) of the film (30) corresponding to the lid body is exposed from the window (72), and the film is in the window (72). It is in a stretched state.

  Further, as shown in FIG. 20, each closed portion (99) of the film is folded in two on the outer surface side of the sealing polymer pieces (73) and (74) with the lid (9) covered. The gap between the edges of the adjacent sealing polymer pieces (73) and (74) is closed by the closing portion (99), thereby preventing leakage of the liquid seasoning and juice from the gap. It has become.

  As shown in FIGS. 18 and 19, the locations where the film (30) is adhered to the inner surface of the container are scattered as shown in FIG. 18 and FIG. The main attachment portion of the film (30), which is not attached to the inner surface of the connection piece (5) of 1), will be described. Is adhered 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). ) The tip of (80) is adhered to the inner surface of the tip of each lid holder (60) (60) of the container body (1) along the distal edge of the lid holder (60) (60), Further, a portion (2) corresponding to the bottom wall of the film (30) is attached to two inner surfaces of the bottom wall (2) of the container body (1) in the front-rear direction of the bottom wall (2). Further, a portion (90) of the film (30) corresponding to the lid body is adhered to the inner surface of the periphery of the window hole (72) of the lid body (70) of the lid body (9) along the periphery of the window hole (72). Further, the front end portions of the front sealing polymer strip corresponding portion (93) and the left and right sealing polymer strip corresponding portions (94) and (94) of the film (30) are set to the corresponding sealing polymer portions of the lid (9). The sealing polymer pieces (73) (74) (74) are adhered to the inner surfaces of the tips of the pieces (73), (74) and (74) along the leading edges of the sealing pieces (73), (74) and (74). The tip of (95) is attached to the inner surface of the tip of the tongue (75) of the lid (9) along the tip of the tongue (75). In addition, as in the first embodiment, the film (30) has all the folds (10) (11) (12) (13) (15) (71) (76) Affixed to the inner surfaces of the container body (1) and the lid (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 put on 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), Further, since the sealing polymer pieces (73) (74) (73) (74) are polymerized on the upper inner surfaces of the corresponding side walls (3) (4) (3) (4) of the container body (1), the lid body There is an advantage that (9) 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), the liquid seasoning and the juice can be removed. There is also an advantage that the problem of leakage from this gap can be prevented.

  In the 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, after the lid holding piece (60) is first raised, the loose part (62) is strongly pressed into the inside of the container body (1) with a fingertip. As a result, the loose part (62) is broken from the breaking connecting part (63a) and the breaking notch (63b), and the free part (62) is loosened from the lid pressing piece (60). ) Is turned up near the free portion (62). The rolled portion is picked and the film (30) is peeled off. As described above, according to the container (C), the film (30) can be turned by releasing the release portion (62), so that there is no need to perform a cumbersome film-turning operation, and the film peeling operation can be performed. Can be performed more easily.

  Further, this container (C) can solve the following drawbacks in the conventional paper packaging container.

  That is, in the conventional paper packaging container, the lid that covers the upper opening of the tray-shaped container body is a flat plate. For this reason, even if an attempt is made to stack containers on the lid after the lid is put on the container, there is a risk that the stacked containers may fall laterally and fall, and the containers cannot be stably stacked. For this reason, at the work site where foods and the like are packed in boxes, after the foods and the like have been placed in the container body, the containers must be placed side by side on the work table and packed as the number of containers increases. There has been a problem that the working space is narrow.

  Therefore, in order to stably stack a plurality of containers with the lids covered, the paper packaging container (C) of the third embodiment comprises 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 (2), and a recessed cover over an opening on the upper surface of the container body (1). And a side wall (3), (4), (3), (4) of the container body (1) having a larger upper side length than a lower side length. On the other hand, the lid (9) is provided with a lid main body (70) and a plurality of sealing polymer pieces (73), (74), (73) (73) ( 74), and in a state where the lid (9) is covered on the upper surface opening of the container body (1), the lid body (70) is connected to the plurality of containers of the container body (1). Side wall (3 (4) (3) (4) It is arrange | positioned substantially horizontally at the position lower than the height position of the upper edge, and said each sealing polymer piece (73) (74) (73) (74) is the said container. A configuration is adopted in which the inner surfaces of the corresponding side walls (3), (4), (3), and (4) of the main body (1) are superimposed.

  According to the container (C), the side walls (3), (4), (3), and (4) of the container body (1) have the upper side length set to be larger than the lower side length. When performing the operation, a plurality of containers can be stacked with the lid opened, so that the boxing work space can be effectively utilized, and the lid (9) can be used as the container body (1). When the lid body (70) is covered with the upper surface opening of the container body, the lid body (70) is at a position lower than the upper edge height position of the plurality of side walls (3) (4) (3) (4) of the container body (1). Since the containers are arranged substantially horizontally, as shown in FIG. 17, when stacking containers after covering the lid, the containers to be stacked are placed on a horizontally arranged lid body (70). And the bottom of the stacked containers is hooked on the upper end of the side wall (3) (4) (3) (4) of the lower container. The hanging prevents the containers from falling due to lateral displacement, and as a result, a plurality of containers can be stably stacked, so that the boxing work space can be more effectively utilized. Has the advantage of becoming Moreover, since the sealing polymer pieces (73) (74) (73) (74) are polymerized on the inner surfaces of the corresponding side walls (3) (4) (3) (4) of the container body (1), the lid is This has the advantage that the body (9) can be placed in a substantially sealed state.

  Further, the present invention can be variously changed. For example, the container is relatively shallow in the above embodiment, but may be deep in the present invention. In addition, in the above embodiment, the antifouling film is made of thin paper or PET resin. However, in the present invention, the antifouling film may be made of synthetic resin such as polyethylene or polypropylene, or may be made of synthetic resin such as silicone resin. It may be made of coated paper.

  Further, in the present invention, the container is provided with a hanging handle for carrying, and the container mounting portion of the handle is connected to the distal end portions of the connecting pieces connected to both end edges of the pair of opposed side walls. May be connected on the outer surface side of the side wall so that adjacent side walls are connected to each other and the handle is attached to the container.

It is a perspective view of the paper packaging container of 1st Embodiment of this invention. It is a side view of a part of the same container. FIG. 3 is a sectional view taken along line III-III in FIG. 2. It is a development view of the same container. It is a development view of the film for soil prevention in the same container. It is a perspective view in the middle of disassembly of the container main body which shows an example of the operation | movement of the film for contamination prevention in the same container. It is a perspective view in the state where one side wall of a container main body was pushed, showing another example of a separation operation of a dirt prevention film in the same container. It is a perspective view of the paper packaging container of 2nd Embodiment of this invention. It is sectional drawing corresponding to FIG. 3 of the same container. It is a development view of the same container. It is a development view of the film for soil prevention in the same container. It is a perspective view in the middle of the assembly of the same container. It is a development view of the film for soil prevention which shows the modification of the film for soil prevention in the paper packaging container of the said 2nd Embodiment. It is a development view of the film for soil prevention which shows the modification of the film for soil prevention in the paper packaging container of the said 1st Embodiment. It is a perspective view of the paper packaging container of 3rd Embodiment of this invention. It is a perspective view showing the same container in the state where a lid was closed. It is sectional drawing of the same container. It is a development view of the same container. It is a development view of the film for soil prevention in the same container. It is an expansion perspective view of the same container. FIG. 4 is a perspective view showing an example of a separation operation of a stain-preventing film in the same container, in a state in which a film-turning release portion is being released.

Explanation of reference numerals

A, B, C ... containers
1. Container body
2. Bottom wall
3, 4 ... side wall
5 Connecting piece
6: Knob for dismantling the container body
9 ... Lid
10… fold for half
30 ... Dirt prevention film
31… Container corresponding part
32… Bottom wall corresponding part
33, 34 ... Side wall corresponding parts
35 ... Parts corresponding to connecting pieces
39 ... Lid-compatible part
50 ... polymerized piece
B ... sticking part

Claims (6)

A paper food packaging container in which an antifouling film (30) for preventing dirt due to contact with food is laminated on the inner surface and is attached at a plurality of locations with a peelable adhesive,
The container body (1) includes a bottom wall (2), a plurality of side walls (3), (4), (3), (4) provided in a circumferential direction on a periphery of the bottom wall, and an adjacent side wall ( 3) A connecting piece (5) interposed between the edges of (4), and the connecting piece (5) is connected to the edge of each side wall and is mutually folded half-fold (10). And a pair of folded half portions (5a) and (5b) connected to each other, and the adjacent side walls (3) and (4) are connected to each other by the connecting piece (5). One of the folded halves (5a) is attached to the outer surface of the side wall (4) on the folded halves side in a state of being folded into a shape, thereby being connected.
In the film (30), the portion (31) corresponding to the container body has a portion corresponding to the bottom wall (32), a portion corresponding to each side wall (33), (34), (33), (34) and a portion corresponding to the adjacent side wall. And a superposed piece (50) connected to the edge of one of the side wall corresponding portions (34) of the portions (33) and (34), and the bottom wall corresponding portion and each side wall corresponding portion are , Are laminated on the inner surface of the bottom wall of the container body and the inner surface of each side wall, and the overlapped piece (50) is polymerized on the inner surface of the end of the other side wall corresponding portion (33), so that the adjacent side wall corresponding portion ( 33) While the gap between the edges of (34) is closed by the overlapping piece (50), the film (30) is not laminated on the inner surface of the connecting piece (5) of the container body (1). A food packaging container made of paper.   The paper-made sheet according to claim 1, wherein a projection (50a) protruding toward a middle portion in the longitudinal direction of the other side wall corresponding portion (33) is provided at a lower end portion of the tip of the overlapping piece (50). Food packaging container.   The paper food packaging container according to claim 1 or 2, wherein an upper portion of each of the side wall corresponding portions (33), (34), (33), and (34) is adhered.   4. The container according to claim 1, wherein a part for turning the film is provided on a part of the container through a plurality of connecting portions for breakage and a notch for breaking. 5. The paper food packaging container of the above.   The paper food packaging container according to any one of claims 1 to 4, wherein the film (30) is made of paper. The container is one in which adjacent portions are continuously provided via a fold,
The paper-made food packaging container according to any one of claims 1 to 5, wherein the film (30) is adhered at a portion excluding all folds and the vicinity thereof.