JP2019099275A - carton - Google Patents

Abstract

To provide a carton made of a paper that when coating an opening part with a wrap film, the opening part can be excellently sealed because the wrap film has high adhesiveness.SOLUTION: In a carton that has a main body 1 which comprises a bottom face plate 10, and a front face plate 20, side face plates 40 and 40 and a back face plate 30, consecutively connected to four sides of the bottom face plate 10, and a lid body 2 which comprises an upper face plate 50 consecutively connected to an upper edge of the back face plate 30, side flaps 41, which are folded inward with upper edges of the side face plates 40 as side folding parts 42 to protrude into an opening part of the main body 1, are consecutively connected to the upper edges of the side face plates and adhesion layers 43 of a wrap film are formed in the side plates 40 and the side flaps 41 across the side folding parts 42.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a paper carton for food, and to a carton that is easy to cover and seal with a wrap film.

  Paper cartons equipped with box-shaped containers are widely used as cartons for the sale of prepared foods and the like. When food products sold in such paper cartons are heated in a microwave oven or stored in a refrigerator, the opening of the container is often covered with a wrap film, but for paper containers There is a problem that the wrap film does not adhere well and the opening can not be sealed well.

  Patent Document 1 discloses a technique of bringing a wrap film covering an opening into close contact with a container at the side by providing an adhesive layer of the wrap film on the side of the opening of a paper container.

Patent No. 3092848 gazette

  However, as in Patent Document 1, simply providing the adhesion layer on the side of the opening may not be able to sufficiently adhere the wrap film, and a carton that can be more easily and reliably sealed with the wrap film Was desired.

  An object of the present invention is to provide a carton made of paper, which has high adhesion of the wrap film and can be well sealed by the wrap film.

According to a first aspect of the present invention, there is provided a box-shaped main body having a bottom plate, and a front plate, left and right side plates and a rear plate connected respectively to the four sides of the bottom plate and rising from the four sides.
A lid provided with an upper surface plate connected to the upper edge so as to be tiltable with the upper edge of the rear surface plate as a hinge portion and covering the opening of the main body;
In a paper carton with
In the opening of the main body, at least one of two opposite sides has a flap connected to at least one of the sides,
An adhesive portion of a wrap film is provided on the outer surface of the flap, the side surface connected to the flap, the outer surface of the front plate, and the outer surface of the rear plate across the one side.
At least an adhesion portion of a wrap film is provided on the outer surface of the upper edge of any one of the side plate, the front plate, and the rear plate including the other side of the one pair.

In the present invention, an embodiment including the following constitution as a preferred embodiment and having both the following (1) and (2) is preferable.
(1) The flaps are side flaps connected to respective upper edges of the left and right side plates and bent inward with the upper edges as side folds and projecting into the opening.
The contact portion is formed on the outer surface of the side plate and the outer surface of the side flap, straddling the side fold.
(2) The flap is connected to the upper edge of the front plate, is bent inward with the upper edge of the front plate as a front fold, and protrudes into the opening; and the hinge portion is formed on the upper plate A rear flap connected to the rear cover, and the top plate is separable from the main body leaving the rear flap,
The close contact portion straddles the front fold portion, and the outer surface of the front plate and the outer surface of the front flap; and the outer surface of the rear plate and the outer surface of the rear flap across the hinge portion. Is formed.
(3) The flap is a rear flap formed on the top plate and connected to the hinge, and the top plate can be separated from the main body leaving the rear flap,
The contact portion is formed on the outer surface of the upper edge of the front plate and the outer surface of the rear plate and the outer surface of the rear flap across the hinge portion.

Further, according to a second aspect of the present invention, there is provided a box-shaped main body having a bottom plate, and a front plate standing on each side of the bottom plate and rising from the four sides, side plates on the left and right, and a back plate.
A lid provided with an upper surface plate connected to the upper edge so as to be tiltable with the upper edge of the rear surface plate as a hinge portion and covering the opening of the main body;
In a paper carton with
An adhesive portion of a wrap film is provided on the outer surface of the upper edge of the front plate and the outer surface of the rear plate and the outer surface of the upper plate across the hinge portion.

  In the first carton of the present invention, since the close contact portion of the wrap film is formed across at least one of the side folds, the front fold and the hinge and the hinge, the opening of the main body is When covered with a wrap film, the wrap film adheres well to the main body, and the opening can be easily sealed.

  Further, by providing both the close contact portion straddling the side fold portion and the close contact portion straddling each of the front fold portion and the hinge portion, the close contact property to the main body of the wrap film becomes higher, and further the opening portion Sealability can be enhanced.

  In the second carton of the present invention, the close contact portion of the wrap film is formed across the hinge portion, so when the lid is closed and covered with the wrap film, the wrap film is well in contact with the main body And high sealing performance can be obtained.

FIG. 5 is a top view of the blank of one embodiment of the first carton of the present invention. It is a perspective view which shows the state which opened the cover of the carton of FIG. It is a perspective view of the state which separated the lid of the carton of FIG. 1 from the main body. It is a figure which shows the state which closed the lid of the carton of FIG. 1, (a) is a perspective view, (b) is a top view, (c) is an enlarged view of the area A in (b). FIG. 10 is a partial top view of a blank of another embodiment of the first carton of the present invention, showing the lid and the back plate. FIG. 7 is a top view of a blank of another embodiment of the first carton of the present invention. FIG. 10 is a top view of the blank of one embodiment of the second carton of the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to the following embodiments. Further, in the drawings referred to below, the same reference numerals indicate similar components.

<First invention>
FIG. 1 is a top view of the blank of a preferred embodiment of the first carton of the present invention, showing the side that will be the outside after molding. 2 is a perspective view of a state in which the lid is opened after the blank of FIG. 1 is formed, FIG. 3 is a perspective view of a state in which the lid is separated, and FIG. 4 (b) is a top view of a state in which the lid is closed, and FIG. 4 (c) is an enlarged view of the region A in FIG. 4 (b). It is. In addition, the fold part shown by the dashed-dotted line in FIG. 1 is mountain fold, and the fold part shown by a broken line is valley fold.

  As shown in FIGS. 1 to 3, the carton of the present invention comprises a paper body 1 and a lid 2. The main body 1 is connected to the bottom plate 10 and the four sides of the bottom plate 10, and the four sides are bent upward as the lower folding portion 12, and the front plate 20 raised from the four sides and the side plates 40 and 40 and the rear And a face plate 30. Further, the lid 2 includes an upper surface plate 50 connected to the upper edge of the rear surface plate 30, and the upper surface plate 50 is connected so as to be tiltable with the upper edge of the rear surface plate 30 as a hinge portion 32, Cover the opening of the main body 1 when 2 is closed.

  In the present invention, as shown in FIGS. 1 to 3, in the carton provided with the main body 1 and the lid 2, at least one of two opposite sides of the opening of the main body 1 is at least one of the two. A flap connected to one side is provided, and a flap is attached across the side, and an adhesion portion of a wrap film is provided on the outer surface of any of side plates 40 and 40, front plate 20, and rear plate 30 connected to the flap. In the other side, the adhesion of the wrap film to the main body 1 is enhanced by providing the adhesion portion of the wrap film on at least the outer surface of any of the side plates 40 and 40, the front plate 20, and the back plate 30. It has a feature.

In the present invention, it is preferable that the flaps be formed on at least two sides of at least one of the pair, and the intimate contact portion be formed across the flaps. In the structure which concerns, the structure which has at least following (1), and the structure of following (2) are mentioned.
(1) providing the side flaps 41, 41 connected to the side folds 42, 42 with the upper edges of the left and right side plates 40, 40 as the side folds 42, 42; Adhering portions 43 and 43 are formed on the outer surfaces of the side flaps 41 and 41 and the side plates 40 and 40 so as to straddle 42.
(2) While providing the front flap 21 connected to the front folding portion 22 with the upper edge of the front plate 20 as the front folding portion 22, at the same time providing the rear flap 31 connecting to the hinge portion 32 on the upper surface plate 50; The adhesion portion 23 is formed on the outer surface of the front flap 21 and the front plate 20 across the folding portion 22, and the adhesion portion 33 is formed on the outer surface of the rear flap 31 and the rear surface plate 30 over the hinge portion 32.

Further, in the present invention, the configuration of the following (3) is preferably mentioned as a configuration in which the flap is formed only on one side of one of the two opposing sides of the opening.
(3) The upper surface plate 50 is provided with the rear flap 31 connected to the hinge portion 32, and the outer surface of the rear surface plate 30 and the rear flap 31 and the outer surface of the upper edge of the front surface plate 20 are straddled across the hinge portion 32 The adhesion part 33 of the film is provided.

  Hereinafter, the present invention will be described in detail by taking the first embodiment having at least the above (1), the second embodiment having the above (2), and the third embodiment having the above (3) as an example. .

First Embodiment
In the present embodiment, the side flaps are connected to the upper edges of the left and right side plates 40, 40, and the upper edges are bent inward as the side folds 42, 42 and project into the opening of the main body 1. 41 and 41, and the adhesion portions 43 and 43 of the wrap film on the outer surface of the carton of the side plates 40 and 40 and the side flaps 41 and 41 across the side folds 42 and 42 (in the figure, An area (indicated by hatching) is formed.

  As shown in FIGS. 1 to 3, the side flaps 41 are bent at the side folds 42 and protrude into the opening of the main body 1, and the adhesion portions 43 formed across the side folds 42 are: The two sides of the side plate 40 and the side flaps 41 constituting the side folds 42 are formed on the outer surface of the carton. Therefore, when the opening of the main body 1 is covered with a wrap film, the wrap film adheres to the two surfaces at the contact portions 43 and 43 over the two side folds 42 and 42, respectively. The opening can be well sealed.

  Further, in the present embodiment, as shown in FIGS. 1 to 3, the front flap 21 is connected to the upper edge of the front plate 20, and the upper edge is bent inward as the front fold portion 22. Forming a close contact portion 23 of the wrap film (the hatched area in the figure) also on the outer surface of the carton between the front plate 20 and the front flap 21 across the front folding portion 22. Do. Thereby, when the opening of the main body 1 is covered with a wrap film, the wrap film adheres to two surfaces at three places of the opening, that is, the adhesion portions 43, 43, 23 respectively, so that it is better The opening can be sealed.

  In the present embodiment, after the adhesion portions 43 and 43 are provided only on the side plates 40 and 40 and straddle the folding portion, the front flap 21 is not provided on the upper edge of the front plate 20. It is also possible to provide the adhesion portion on the outer surface of the edge (the region on the front plate 20 side of the adhesion portion 23). In this case, the adhesion of the wrap film is more preferable than the configuration in which only the adhesion portions 43 and 43 are provided.

  The side flaps 41 and the front flaps 21 are members for forming the contact portions 43 and 23, respectively, and at the same time, are members overlapping the upper surface plate 50 when the lid 2 is closed. The provision of the front flaps 41 and the front flaps 21 can prevent the food stored in the main body 1 from spilling out and intrusion of foreign matter from the outside.

  Furthermore, in the present embodiment, as shown in FIG. 1, the upper flap 50 of the lid 2 is formed with a rear flap 31 surrounded by a substantially U-shaped flap forming line 35 contacting both ends with the hinge portion 32. . In the present embodiment, the flap forming line 35 is formed by the nicks 35a and the cutting parts 35b, and the rear flaps 31 are a part of the upper surface plate 50 at the time of carton forming. Can be separated from the top plate 50. Therefore, by separating the rear flap 31 from the upper surface plate 50 by the flap forming line 35, the flaps become four sheets 21, 31, 41 and 41 without separating the lid 2, and the opening is more favorably formed by the wrap film. It can be sealed. Furthermore, in the present embodiment, both ends of the flap forming line 35 in contact with the hinge 32 to both ends of the hinge 32, ie, both sides of the central region 32a of the hinge 32 surrounded by the flap forming line 35. A region 32 b (for convenience, only the region on the right side of the drawing is given a code) is formed by a perforation, and the top plate 50 can be separated from the rear plate 30 at the hinge portion 32 b. Therefore, by cutting the flap forming line 35 and the hinge portion 32b, the lid 2 can be separated from the main body 1 with the rear flap 31 remaining, and when the opening of the main body 1 is covered with a wrap film, the lid 2 can be excluded.

  Furthermore, in the present embodiment, the adhesion portion 33 of the wrap film on the outer surface of the carton of the back surface plate 30 and the rear flap 31 straddling the hinge portion 32a surrounded by the flap forming line 35 (hatched in FIG. An area indicated by hatching is formed.

  Therefore, in the present embodiment, the hinge portion 32b and the flap forming line 35 are cut to separate the lid 2 from the main body 1, and the rear flap 31 is bent inward by the hinge portion 32a to project into the opening of the main body 1 As shown in FIG. 3, four flaps 21, 31, 41 and 41 are formed, and the adhesion portions to which the wrap film adheres are four points 23, 33, 43 and 43, and the wrap film is more favorably. And the opening can be sealed.

  In the present embodiment, the side flaps 41 and 41, the close contact portions 43 and 43, and the rear flap 31 and the close contact portion 33 are provided, and the front flap 21 and the close contact portion 23 are not provided. It is also preferable that the wrap film be in close contact across the side folds 42 and 42 and the hinge 32 at three points 43, 33, and 43, respectively. Further, in the present embodiment, if the side flaps 41 and 41 and the close contact portions 43 and 43 are provided, the front flap 21 and the back flap 31 are not provided, and the top plate 50 is separated from the hinge 32 as described later. The adhesion portion may be provided only on the outer surface (the region on the rear surface plate 30 side of the adhesion portion 33) on the upper edge (hinge portion 32) side of the rear surface plate 30. Furthermore, in the present embodiment, when the side flaps 41 and 41 and the close contact portions 43 and 43 are provided, the front flap 21 and the rear flap 31 are not provided, and the outer surface on the upper edge side of the back surface plate 30 It is also preferable that the close contact portion be provided on the rear face plate 30 side region 33 and the outer surface on the upper edge side of the front face plate 20 (the region of the close contact portion 23 on the front face plate 20 side).

  The flap forming line 35 may be formed by a discontinuous cutting portion or a continuous cutting portion as long as the top plate 50 can be separated from the main body 1 with the rear flap 31 remaining. good. In the case where the flap forming line 35 is formed by a discontinuous cut portion, it may be a perforation as the nick portion 35a and the cut portion 35b as in the present embodiment. Further, in the present embodiment, the hinge portion 32b may be formed by the discontinuous cut portion so that the lid 2 can be separated from the main body 1 and formed by the nick portion and the cut portion as in the flap forming line 35. You may.

  Further, as shown in FIG. 5 (a), the flap forming line 35 is formed parallel to the hinge portion 32 through a predetermined distance from the hinge portion 32 to the opposite side of the upper surface plate 50 in a straight line, The region between the forming line 35 and the hinge portion 32 may be the rear flap 31 or, as shown in FIG. 5B, the flap forming line 35 may be substantially U-shaped with both ends coinciding with both ends of the hinge portion 32. Even in the case of FIG. 5, the flap forming line 35 is formed by a discontinuous cut in any case in FIG. However, as shown in FIG. 1, it is preferable that both ends of the flap forming line 35 in contact with the hinge portion 32 are separated from both ends of the hinge portion 32 because the separation from the main body 1 of the lid 2 is easier.

  The flap forming line 35 also functions as a vapor removal inside the carton to form a gap in the top plate 50. Further, the side flaps 41, the front flaps 21, and the rear flaps 31 can be raised and used as a handle for lifting the main body 1, respectively. In particular, the side flaps 41, the front flaps 21, and the rear flaps 31 may be formed larger than the shapes shown in FIGS. 1 to 3 in order to use them as a handle for lifting the main body 1; 41 and the front flap 21 may be provided with a hole for inserting a finger, or may be embossed to be easily grasped by the finger.

  Further, in the present embodiment, the side flaps 41 and 41 and the close contact portions 43 and 43 are provided, and only on the upper edge side of the front flap 21 and the close contact portion 23 or the front plate 20 as described above. If the close-contact portion to be disposed and the close-contact portion to be disposed only on the upper edge side of the rear face plate 30 are provided, the rear flap 31 and the close-contact portion 33 are not provided, and the hinge portion 32 is formed by a discontinuous cut portion. In the hinge portion 32, the entire top plate 50 may be separated from the main body 1.

  In the present invention, when the lid 2 is closed, it is possible to prevent the lid 2 from opening using a rubber band, a tape or the like, but a structure for locking the lid 2 to the main body 1 in advance It is preferable to have.

  In the embodiment of FIG. 1, the front flap 21 is used to provide a locking structure when the lid 2 is closed. Specifically, the front flap 21 is provided with the insertion hole 24, and the vicinity of the front edge of the upper surface plate 50 is cut to form the insertion piece 54a, and when the lid 2 is closed, the insertion piece 54a is inserted By inserting into the hole 24, the tip end of the insertion piece 54a overlaps the lower part of the front flap 21, and as shown in FIGS. 4 (b) and 4 (c), the top plate 50 is locked to the front flap 21 and the lid The 2 closed state is maintained.

  In the present embodiment, the insertion hole 24 has a substantially semicircular shape, but may be a linear slit as long as the insertion piece 54a can be inserted. Further, although the insertion piece 54a is formed by the substantially semi-elliptic cut portion 54b, the insertion piece 54a may be substantially semi-circular or substantially U-shaped. Further, in the present embodiment, in order to facilitate the insertion of the insertion piece 54a into the insertion hole 24, from both ends of the substantially semi-elliptical cutting part 54b from the insertion piece 54a parallel to the front edge (upper folding part 52) of the top plate 50. A cutting portion 54c extending outward, and a cutting portion 54d extending from the end of the cutting portion 54c in a direction perpendicular to the cutting portion 54c and away from the front edge are formed, and from the cutting portion 54d Cut portions 54e are formed in parallel at intervals, and a valley fold fold 54f is formed inward from an extension line of the cut portion 54c from the cut portion 54c to the cut portion 54e. According to such a configuration, in the present embodiment, the periphery of the insertion piece 54 becomes flexible, and the insertion piece 54 a can be easily pushed down and inserted into the insertion hole 24.

  In the present embodiment, the lid 2 has the upper flap 51 connected to the front edge of the top plate 50, and when the lid 2 is closed, as shown in FIG. The edge may be bent as the upper folding portion 52 and the upper flap 51 may be stacked on the front plate 20 and fastened with a tape 71 or the like.

  Moreover, in this embodiment, although the shape of the opening part of the main body 1 is a rectangle, a square may be sufficient. Moreover, although the cover body 2 is connected with the long side of the opening part of the main body 1, as shown in FIG. 6, the structure connected with the short side may be sufficient.

  Furthermore, in the embodiment of FIG. 1, the connection between the side plate 40 and the front plate 20 and the rear plate 30 is performed as the connection form of the front plate 20 and the side plate 40, and the rear plate 30 and the side plate 40. The pieces 60a and 60b are provided. Therefore, the box-shaped main body 1 is formed by bending the connecting pieces 60a and 60b at the connecting folds 61a, 61b and 61c, folding them, and overlapping and bonding them to the front plate 20 and the rear plate 30, respectively. The connecting pieces 60a and 60b may be folded and bonded to the side plates 40 and 40 by changing the valley folding and mountain folding positions to change the bending direction. Moreover, in such a configuration, there is no possibility that a gap will be generated at the bottom of the main body 1 at the time of molding, and there is no possibility of liquid leakage even when a food containing a large amount of water or oil is stored. The present invention is not limited to the embodiment, and as shown in FIG. 6, connecting pieces 60c and 60c are provided on both sides of the side plate 40, and the connecting pieces 60c and 60c are connected to the connecting folds 61a, The box-shaped main body 1 may be formed by bending at 61 a and bonding to the front plate 20 and the rear plate 30.

  In the present invention, the adhesion portions 23, 33, 43 of the wrap film can be formed of a coating of a varnish for a carton. Such varnishes include crosslinkable cured varnishes, emulsions composed mainly of natural rubber latex, and water-based paints composed mainly of acrylic resin. The crosslinkable curing varnish is preferably an ultraviolet (UV) curing type varnish, and the type thereof is not particularly limited, and any of a radical polymer, an addition polymer and a cationic polymer can be preferably used. These varnishes can be easily applied to the desired areas by printing.

  In the case of using the above-mentioned emulsion or aqueous paint, a method of obtaining a dried coating film by hot-air drying after gravure rotary printing, plain gravure printing, flexographic printing and the like can be mentioned. Moreover, when the said ultraviolet curing varnish is used, it coats by offset printing or flexographic printing, and can irradiate an ultraviolet ray and can obtain a cured film. Moreover, when using the emulsion which has natural rubber latex as a main component, it is desirable to add the additive for preventing deterioration by an ultraviolet-ray etc. In addition, when a highly adhesive resin material is used, about 10% by mass to 20% by mass of an inorganic filler or an organic filler is added to solid content in the varnish in order to prevent blocking. The filler is preferably one having an average particle diameter of 20 μm or less.

  Further, the length, that is, the width, of the close contact portions 23, 33 and 43 in the direction orthogonal to the front folding portion 22, the hinge portion 32, and the side folding portion 42 respectively is the front folding portion 22, the hinge portion 32, and the side. 10 mm across the folding portion 42 is sufficient for adhering the wrap film, which is preferable. Moreover, since the price of a carton rises, so that the area of close_contact | adherence part 23, 33, 43 becomes wide, it is preferable that the close_contact | adherence parts 23, 33, 43 be narrow in the range from which the adhesiveness of a wrap film is acquired. Therefore, if the contact portions 23, 33, and 43 are formed across the front folding portion 22, the hinge portion 32, and the side folding portion 42, respectively, along the front folding portion 22, the hinge portion 32, and the side folding portion 42. It does not have to be formed in the entire direction, and it may be in the form of a broken line or only in the center and both ends. In addition, the coating film may be formed in a dot shape in a desired area. It is desirable that the contact portions 23, 33, 43 be formed with equal widths on both sides of the front fold 22, the hinge 32, and the side folds 42, respectively.

  Further, by applying the oil resistant varnish to the inside of the carton of the present invention, it is possible to prevent the oil from permeating the carton even if the stored food contains oil. As the oil-resistant varnish, a varnish generally used for cartons is preferably used.

Second Embodiment
The second embodiment of the present invention basically does not have the contact portions 43, 43 described in the first embodiment, and the front flap 21 and the contact portion 23, the rear flap 31 and the flap forming line It is a carton provided with 35 and the contact | adherence part 33, and it is the same as that of description in 1st Embodiment about the structure other than the difference in the structure which concerns, and the detail of a structure.

  Also in the present embodiment, when the opening of the main body 1 is covered with a wrap film, the wrap film is in close contact with the two surfaces at the contact portions 23 and 33 which respectively straddle the front fold 22 and the hinge 32. Therefore, the opening can be sealed well.

  Further, in the present embodiment, the side flaps 41 and 41 may not be provided, but when the lid 2 is closed by providing the side flaps 41 and 41, the side flaps 41 and 41 are provided. Overlaps with the upper surface plate 50, and food stored in the main body 1 can be spilled out, and foreign matter can be prevented from entering from the outside, or can be used as a handle for lifting the main body 1, It is preferable to provide the flaps 41 and 41, and it is also preferable to form a larger hole and to insert a finger.

Third Embodiment
The third embodiment of the present invention is the same as the second embodiment except that the front flap 21 in the second embodiment is not provided. That is, the back flap 31, the flap forming line 35, and the adhesion part 33 are provided without the adhesion parts 43 and 43 and the front flap 21 described in the first embodiment, and the upper edge of the front plate 20 It is a carton provided with the close contact portion (the area on the front plate 20 side of the close contact portion 23) on the outer surface of the folding portion 22), and the first configuration is not specifically described. The same as the description in the second embodiment.

  In the present embodiment, the contact portions formed on the two surfaces across the folded portion are only the contact portions 33 formed on the upper surface plate 50 and the rear surface plate 30 across the hinge portion 32. Although the adhesion of the wrap film is inferior to that of the first embodiment or the second embodiment in which the adhesion portions formed on the two surfaces are two or more, the adhesion portions are provided only on the conventional side surfaces, The adhesion of the wrap film is higher than that of a carton having no close contact portion formed on two sides across the folded portion, and the opening can be favorably sealed.

Second Invention
FIG. 7 is a top view of the blank of a preferred embodiment of the second carton of the present invention, showing the side that will be the outside after molding. The same members as those in the first carton shown in FIG. The folding part shown by the dashed dotted line in FIG. 3 is a mountain fold, and the folding part shown by a broken line is a valley fold. The hinge 32 is indicated by a broken line, which represents a perforation, and in FIG. 1, the hinge 32 is a mountain fold.

  As described in the first carton described above, the adhesion of the wrap film covering the opening is significantly improved by forming the contact portion across the folded portion in at least one place. The second carton of the present invention is an invention in which the function of the contact portion is applied to the case where the lid 2 is covered with a wrap film in a state where the lid 2 is closed.

  The carton of the present invention comprises a paper main body 1 and a lid 2 similarly to the first carton, and the main body 1 is connected to the bottom plate 10 and the four sides of the bottom plate 10 respectively, It has a box shape having a front plate 20 which is bent upward as the folding portion 12 and raised from the four sides, side plates 40 and 40 on the left and right, and a rear plate 30. Further, the lid 2 includes an upper surface plate 50 connected to the upper edge of the rear surface plate 30, and the upper surface plate 50 is connected so as to be tiltable with the upper edge of the rear surface plate 30 as a hinge portion 32, Cover the opening of the main body 1 when 2 is closed.

  The carton of the present invention has the adhesion portion 33 formed on the outer surface of the back plate 30 and the outer surface of the top plate 50 across the hinge portion 32 as shown in FIG. It is not formed and does not have the back flap 31. Further, although the front flap 21 is not provided, the close contact portion 26 of the wrap film is provided on the outer surface of the upper edge 25 of the front plate 20. About the structure except the difference in the structure which concerns, it is the same as that of a 1st carton, and abbreviate | omits description.

  The carton of the present invention is formed on the front plate 20 because the close contact portion 33 is formed on the top plate 50 and the rear plate 30 across the hinge when the lid 2 is closed and covered with the wrap film. Together with the adhesion portion 26, the adhesion of the wrap film is high, and high sealing performance can be obtained. Therefore, when covering and heating with a wrap film, and preserve | saving without separating lid 2, it can seal favorably.

  In the present invention, the rear flap 31 as described in the first carton is not formed on the upper surface plate 50, but if necessary, the upper flap 50 on the upper surface plate 50 partially remains on the close portion 33. It is also possible to form the rear flap 31 substantially as shown in FIG. 5A by splitting the face plate 50 with a finger or separating it with scissors or the like.

  In the present invention, as shown in FIG. 7, it is preferable to provide the side flaps 41, 41. When the side flaps 41 and 41 are covered with a wrap film, the side flaps 41 and 41 may be folded up inside or may be raised and used as a handle. In the present embodiment, as shown in FIG. 7, the side flaps 41, 41 are provided with the holes 44, 44 into which the fingers are inserted, so even if the side flaps 41, 41 become hot due to heating, they can be held easily It has become.

  Further, in the present embodiment, the hinge portion 32 is formed by a perforation, and the top plate 50 can be easily separated from the back plate 30. Therefore, when the lid 2 is unnecessary, the lid 2 can be easily separated. In addition, when high sealing performance is not required when covered with a wrap film, the area of the adhesion portion 33 where the lid 2 is separated and left on the upper edge side of the back plate 30, and the front plate 20 It is also possible to use a wrap film in close contact with the contact portion 26. Instead of the perforations, the nicks and the cut portions may be formed as described in the first carton, and the same effect can be obtained with the discontinuous cut portions.

  The adhesion of the wrap film is good if the width of the adhesion portions 26 and 33 of the present invention, ie, the length in the direction orthogonal to the upper edge 25 and the hinge portion 32 is 10 mm or more. As described above, in consideration of the case where the lid 2 is separated and used, it is preferable that the width is 10 mm or more in the region on the back surface plate 30 side of the adhesion portion 33.

  In this embodiment, the connecting pieces 60a and 60b are folded at the connecting folds 61a, 61b and 61c and folded as in the carton of FIG. 1, but the carton of FIG. By changing the position, the connecting pieces 60a, 60b are superimposed on the side plates 40, 40. Also in the present embodiment, the connection pieces 60a and 60b may be stacked on the front plate 20 and the rear plate 30 as in the carton of FIG.

  1: Body, 2: Lid, 10: Bottom plate, 12: Lower fold portion, 20: Front plate, 21: Front flap, 22: Forward fold portion, 23: Close contact portion, 24: Insertion hole, 25: Upper edge , 26: close contact portion, 30: back surface plate, 31: rear flap, 32, 32a, 32b: hinge portion, 33: close contact portion, 35: flap forming line, 35a: nick, 35b: cut portion, 40: side plate, 41: side flap, 42: side fold portion, 43: close contact portion, 44: hole portion, 50: top plate, 51: upper flap, 52: upper fold portion, 54a: insertion piece, 54b to 54e: cut portion , 54f: fold line, 60a, 60b, 60c: connection piece, 61a, 61b, 61c: connection folding part, 71: seal

Claims (18)

A box-shaped main body having a bottom plate, and a front plate, left and right side plates, and a rear plate connected respectively to the four sides of the bottom plate and rising from the four sides;
A lid provided with an upper surface plate connected to the upper edge so as to be tiltable with the upper edge of the rear surface plate as a hinge portion and covering the opening of the main body;
In a paper carton with
In the opening of the main body, at least one of two opposite sides has a flap connected to at least one of the sides,
An adhesive portion of a wrap film is provided on the outer surface of the flap and the outer surface of the front plate or the rear plate connected to the flap across the one side.
A carton having at least an adhesive portion of a wrap film on the outer surface of the upper edge of any one of the side plate, the front plate, and the rear plate including the other side of the one pair.   The carton according to claim 1, wherein the flaps are respectively provided at least on two sides of the one pair, and the contact portion is formed across the two sides. The flaps are side flaps connected to upper edges of the left and right side plates and bent inward with the upper edges as lateral folds and protruding into the opening.
The carton according to claim 2, wherein the close contact portion is formed on the outer surface of the side plate and the outer surface of the side flap, straddling the side fold portion. It has a front flap connected to the upper edge of the front plate and bent inward with the upper edge of the front plate as a front fold and protruding into the opening.
4. The carton according to claim 3, further comprising a close contact portion of a wrap film on the outer surface of the front plate and the outer surface of the front flap across the front fold. The front flap has an insertion hole,
5. The carton according to claim 4, wherein the upper surface plate is formed by cutting the upper surface plate near the front edge and having an insertion piece inserted from the insertion hole and overlapping the lower part of the front flap.   The carton according to any one of claims 3 to 5, wherein the hinge portion is formed by a discontinuous cut portion, and the lid is separable from the main body. The top plate having a rear flap connected to the hinge portion, the top plate being separable from the body leaving the rear flap;
The carton according to any one of claims 3 to 5, further comprising a close contact portion of a wrap film on the outer surface of the back plate and the outer surface of the rear flap across the hinge portion. The flap is connected to the upper edge of the front plate, is folded inward with the upper edge of the front plate as a front fold, and is formed on the upper plate and is connected to the hinge. A back flap, the top plate being separable from the body leaving the back flap;
The close contact portion straddles the front fold portion, and the outer surface of the front plate and the outer surface of the front flap; and the outer surface of the rear plate and the outer surface of the rear flap across the hinge portion. A carton according to claim 2, characterized in that it is formed into. The front flap has an insertion hole,
9. The carton according to claim 8, wherein the upper surface plate is formed by cutting the upper surface plate near the front edge and having an insertion piece inserted from the insertion hole and overlapping below the front flap. The flap is a rear flap formed on the top plate and connected to the hinge, and the top plate can be separated from the main body leaving the rear flap,
The said close_contact | adherence part is formed in the outer surface of the upper edge of the said front plate, and the outer surface of the said backplate and the outer surface of the said back flap over the said hinge part, The carton described in 1. The rear flap is surrounded by a generally U-shaped flap forming line tangent to the hinge portion at both ends;
8. The flap forming line according to claim 7, wherein the flap forming line is formed by a continuous or discontinuous cut portion, and the ends from the both ends of the flap forming line to both ends of the hinge portion are formed by a discontinuous cut portion. 10. A carton according to any of the preceding claims. The aft flap is surrounded by a generally U-shaped flap forming line tangent to both ends of the hinge portion;
11. A carton according to any one of claims 7 to 10, characterized in that the flap forming line is formed by a discontinuous cut.   The rear flap is a region between a flap forming line formed of a discontinuous cut portion formed in parallel to the hinge portion at a predetermined distance from the hinge portion, and the hinge portion. The carton according to any one of claims 7 to 10.   The carton according to any one of claims 1 to 13, wherein the width of the contact portion is 10 mm or more. A box-shaped main body having a bottom plate, and a front plate, left and right side plates, and a rear plate connected respectively to the four sides of the bottom plate and rising from the four sides;
A lid provided with an upper surface plate connected to the upper edge so as to be tiltable with the upper edge of the rear surface plate as a hinge portion and covering the opening of the main body;
In a paper carton with
A carton having a wrap film adhesion portion on the outer surface of the upper edge of the front plate and the outer surface of the rear plate and the outer surface of the upper plate across the hinge portion.   16. The carton of claim 15, wherein the hinge portion is formed with a discontinuous cut.   The carton according to claim 15 or 16, wherein a width of the contact portion provided on the front plate and a width of the contact portion on the back plate are each 10 mm or more.   The carton according to any one of claims 1 to 17, wherein the contact portion is a coating of varnish.

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