JP6007621B2 - Composite container with outer box and inner bag, and paper container - Google Patents

Description

  The present invention relates to a composite container including an outer box and an inner bag accommodated in the outer box. The present invention also relates to a paper container that can be used as an outer box of a composite container.

  Conventionally, a composite container in which an inner bag is accommodated inside a paper outer box, a so-called bag in carton, is used as a container for accommodating food or the like. As this type of composite container, there has been proposed a composite container configured so that the inner bag can be opened at the same time when the outer box is opened. For example, Patent Documents 1 to 3 disclose a composite container that realizes simultaneous opening of the outer box and the inner bag by bonding the inner bag to the outer box.

Japanese Patent No. 3961821 Japanese Utility Model Publication No.59-11869 Japanese Utility Model Publication No. 62-165267

  In the composite container proposed by Patent Documents 1 to 3, in order to open the outer box and the inner bag at the same time, it is necessary to accurately bond the opening portion of the outer box and the inner bag. Becomes complicated.

  An object of this invention is to provide the composite container which can solve such a subject effectively.

  The present invention is a composite container comprising an outer box and an inner bag accommodated in the outer box, wherein the outer box is connected to the bottom, the front plate and the rear plate that are connected to the bottom and face each other. The front plate and the rear plate of the outer box each have a pair of side edges extending from the upper end of the outer box to the bottom, and the front plate and the rear plate are the pair of side edges. And the space between the front plate and the rear plate of the outer box is at least partially reduced with increasing distance from the bottom, and the front plate and the A series of cut portions crossing the front plate and the rear plate are formed in a portion where the distance between the rear plate and the rear plate becomes smaller, and at least the outer box is formed in the inner bag. A position corresponding to the cut portion of One, the position of one face to one of said pair of side edges of the front plate and the rear surface plate of the outer box, easy-opening portion is formed, a composite container.

  The composite container by this invention WHEREIN: The part which becomes small as the space | interval between the said front plate and the said back plate among the said outer boxes leaves | separates from the said bottom part may reach the upper end of the said outer box.

  In the composite container according to the present invention, the upper edge of the front plate of the outer box and the upper edge of the rear plate of the outer box may be in contact with each other.

  In the composite container according to the present invention, the bottom portion of the outer box may have a polygonal outline including at least four apexes.

  In the composite container according to the present invention, the upper end of the outer box from a vertex not connected to a side edge of the front plate or the rear plate among the vertexes of the bottom to the front plate and the rear plate of the outer box. A ruled line extending toward the surface may be formed.

  The composite container by this invention WHEREIN: While the said bottom part of the said outer box has a leaf-shaped outline, it may be comprised so that it may become convex toward the inner side of the said outer box.

  In the composite container according to the present invention, a ruled line extending from the cut portion toward the bottom may be formed on the front plate and the rear plate of the outer box.

  The present invention is a paper container, and includes a bottom portion, and a front plate and a rear plate that are connected to the bottom portion and face each other, and the front plate and the rear plate are each from an upper end of the container. A pair of side edges extending to the bottom, and the front plate and the rear plate are connected to each other via the pair of side edges, and the distance between the front plate and the rear plate is at least Partially crossing the front plate and the rear plate in a portion of the container that becomes smaller as the distance from the bottom portion decreases, and that the space between the front plate and the rear plate in the container decreases as the distance from the bottom portion increases. A container in which a series of cut portions are formed.

  In the paper container according to the present invention, the upper edge of the front plate and the upper edge of the rear plate may be in contact with each other.

  ADVANTAGE OF THE INVENTION According to this invention, even if it does not adhere | attach the opening part of an outer box and an inner bag, the composite container which can open an outer box and an inner bag simultaneously can be provided.

FIG. 1A is a perspective view showing a composite container including an outer box and an inner bag accommodated in the outer box in the first embodiment. FIG. 1B is a perspective view showing an outer box of the composite container shown in FIG. 1A. 2A (a) is a front view showing the outer box of FIG. 1B, FIG. 2A (b) is a side view showing the outer box of FIG. 1B, and FIG. 2A (c) is a bottom view showing the outer box of FIG. 1B. . FIG. 2B is a side view showing an example in which irregularities are formed on the front plate and the rear plate of the outer box. FIG. 3 is a plan view showing a blank plate for producing the outer box shown in FIG. 1B. FIG. 4A is a front view showing an inner bag of the composite container shown in FIG. 1A. FIG. 4B (a) is a view showing a modification of the easy-open portion formed on the inner bag, and FIG. 4B (b) is an example of a packaging material for forming the inner bag shown in FIG. 4B (a). Figure. FIG. 5 is a cross-sectional view showing a layer structure of a packaging material constituting the inner bag. 6A, 6B, and 6C are views showing an example of a method for manufacturing a composite container. FIG. 7 is a diagram showing another example of a method for manufacturing a composite container. FIG. 8A is a perspective view showing a state when the composite container is opened, and FIG. 8B is a view showing the opened composite container. FIG. 9 is a view showing a modification of the outer box according to the first embodiment. FIG. 10 is a plan view showing a blank plate for producing the outer box shown in FIG. 9. FIG. 11A is a perspective view showing a state when the main body portion of the outer box after being opened is closed by the lid portion of the outer box, and FIG. 11B is a main body portion closed by the lid portion. FIG. FIG. 12 is a view showing a modification of the outer box according to the first embodiment. FIG. 13 is a view showing a modification of the outer box according to the first embodiment. FIG. 14 is a view showing a modification of the outer box according to the first embodiment. FIG. 15 is a plan view showing a blank plate corresponding to a modification of the outer box according to the first embodiment. FIG. 16 is a front view showing a modification of the inner bag. FIG. 17 is a front view showing a modification of the inner bag. FIG. 18 is a plan view showing a modification of the blank plate according to the first embodiment. FIG. 19 is a perspective view showing an outer box according to the second embodiment. 20 (a) is a front view showing the outer box of FIG. 19, FIG. 20 (b) is a side view showing the outer box of FIG. 19, and FIG. 20 (c) is a bottom view showing the outer box of FIG. . FIG. 21 is a plan view showing a blank plate for producing the outer box shown in FIG. 19. FIG. 22 is a perspective view showing an outer box according to the third embodiment. 23 (a) is a front view showing the outer box of FIG. 22, FIG. 23 (b) is a side view showing the outer box of FIG. 19, and FIG. 23 (c) is a bottom view showing the outer box of FIG. . 24 is a plan view showing a blank plate for producing the outer box shown in FIG.

First Embodiment Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. First, the entire composite container 10 will be described with reference to FIG. 1A.

As shown in FIG. 1A, the composite container 10 includes an outer box 20 and an inner bag 40 accommodated in the outer box 20. Among these, the inner bag 40 is comprised so that it may have high sealing performance, For this reason, the contents which dislike moisture, such as a confectionery, can be stored in the inner bag 40 inside. The outer box 20 is configured to have a predetermined shape stability. By combining the outer box 20 and the inner bag 40 to form the composite container 10, both sealing performance and resistance to external force can be achieved. In FIG. 1A, the inner bag 40 accommodated in the outer box 20 is indicated by a two-dot chain line. In the present embodiment, there is no adhesive element such as an adhesive between the outer box 20 and the inner bag 40. That is, the inner bag 40 is not bonded to the outer box 20. Even in this case, the outer box 20 and the inner bag 40 can be simultaneously opened by adopting the outer box structure described later.

  Next, the outer box 20 and the inner bag 40 of the composite container 10 will be described in detail. First, the outer box 20 will be described with reference to FIGS. 1B, 2A (a), (b), (c), FIG. 2B, and FIG.

Outer Box FIG. 1B is a perspective view showing the outer box 20. The outer box 20 is produced by bending a blank plate 20A cut out in a corresponding shape. 2A (a), (b), and (c) are a front view, a side view, and a bottom view showing the outer box 20, respectively. FIG. 3 is a plan view showing a blank plate 20A for producing the outer box 20 shown in FIG. 1B.

  As shown in FIGS. 1B and 2A (a), (b), and (c), the outer box 20 has a bottom portion 21 and a pair of side plates that are connected to the bottom portion 21 and face each other. Of these, the bottom portion 21 has a hexagonal outline including six apexes, as shown in FIGS. 1B and 2A (c). In FIG. 1B and FIG. 2A (c), the six bases constituting the hexagonal bottom 21 are represented by reference numerals 31a, 31b, 31c, 31d, 31e, and 31f. In the present embodiment, the side plate is defined as a plate having a side edge from the upper end 30 to the bottom 21 of the outer box 20. In the present embodiment, the “plate” is a concept including not only a flat surface but also a curved surface.

  The pair of side plates are connected to the front plate 22 connected to the bottom portion 21 via the bottom sides (fold lines) 31a, 31b, 31c of the bottom portion 21 and to the bottom portion 21 via the bottom sides (fold lines) 31d, 31e, 31f of the bottom portion 21. And a rear plate 23 connected to each other. In this case, the bottom edge 33a of the front plate 22 is composed of bottom sides 31a, 31b, 31c, and the bottom edge 33b of the rear plate 23 is composed of bottom sides 31d, 31e, 31f.

  The bottom 31b of the bottom edge 33a of the front plate 22 is a bottom corresponding to the central portion of the front plate 22, and the length of the bottom 31b is larger than the lengths of the other bottoms 31a and 31c. The bottom 31e of the bottom edge 33a of the rear plate 23 is a bottom corresponding to the central portion of the rear plate 23. The length of the bottom 31e is longer than the lengths of the other bottoms 31d and 31f. Further, the bottom 31b of the bottom edge 33a of the front plate 22 and the bottom 31e of the bottom edge 33b of the rear plate 23 extend substantially parallel to each other. Thus, by comprising each bottom edge 33a, 33b, the outer box 20 which has a flat shape and is easy to be grasped by a consumer can be obtained.

  As shown in FIG. 1B, the front plate 22 and the rear plate 23 are connected to each other via a pair of side edges 32. That is, the front plate 22 and the rear plate 23 are a pair of side edges 32 extending from the upper end 30 to the bottom 21 of the outer box 20, and include side edges 32 shared by both. The front plate 22 and the rear plate 23 each have top edges 30a and 30b facing the bottom edges 33a and 33b. The top edges 30a and 30b constitute the upper end 30 of the outer box 20.

  As shown in FIG. 1B, a series of cut portions 26 that cross the front plate 22 and the rear plate 23 are formed in the upper portion of the outer box 20. The cut portion 26 is a portion that has been processed to open the outer box 20. The “upper part of the outer box 20” is a place above the midpoint of the outer box 20 in the height direction, and the outer box in the height direction is taken into account when the filling rate of the contents in the inner bag 40 is taken into consideration. It is preferably a location above 2/3 of 20.

As processing for opening, a perforation, a notch, etc. are mentioned, for example. For example, as shown in FIG. 2A, the cutting portion 26 extends along a direction transverse to the outer box 20 includes a plurality of first cut portion 26a that are arranged at intervals t _1. Incidentally, as the interval t ₁ between the two adjacent first cutting portion 26a is small, the cutting portion 26 is easily ruptured upon opening, Therefore unsealing operation by the consumer is facilitated. On the other hand, the smaller the interval t _1, will be the cutting portion 26, such as by impact during transport of the composite container 10 is broken, thereby more likely to composite container 10 becomes unsuitable as a product. The interval t ₁ is appropriately set in consideration of the balance between these advantages and disadvantages. As shown in FIG. 2A, the cut portion 26 may further include a second cut portion 26b that is connected to the first cut portion 26a and extends obliquely downward from the first cut portion 26a. By providing the second cutting unit 26b, even when the interval t ₁ between the first cutting unit 26a adjacent large, that the breaking direction deviates from the direction of extension of the first cutting portion 26a Can be suppressed. Thereby, the unsealing property of the cut portion 26 can be ensured while sufficiently securing the strength of the cut portion 26 in the packaging material.

Next, the characteristics of the shape of the outer box 20 will be described. In the present embodiment, the outer box 20 is configured such that the distance between the front plate 22 and the rear plate 23 becomes at least partly smaller as the distance from the bottom portion 21 increases. Further, the cut portion 26 described above is formed in a portion of the outer box 20 that becomes smaller as the distance between the front plate 22 and the rear plate 23 increases from the bottom portion 21. In FIG. 1B, the outer box 20 is configured so that the distance between the front plate 22 and the rear plate 23 decreases from the bottom 21 over the entire area of the outer box 20, that is, from the bottom 21 to the upper end 30. An example is shown. For example, if the distance between the front plate 22 and rear plate 23 at the bottom 21 and _{d 1,} the distance between the front plate 22 and rear plate 23 in the cutting portion 26 and _{d 2, d 2} is _{d 1} Is smaller than By setting the distance between the front plate 22 and the rear plate 23 in this way, the front plate 22 in the cut portion 26 is secured while ensuring a sufficient volume between the bottom portion 21 and the cut portion 26 of the outer box 20. And the distance d ₂ between the rear plate 23 and the rear plate 23 can be made sufficiently small. Accordingly, when the consumer grasps the periphery of the cut portion 26 of the outer box 20, the inner bag 40 can be easily grasped by the consumer via the outer box 20 at the same time. The specific value of the distance d ₂ between the front plate 22 and the rear plate 23 in the cut portion 26 is appropriately set according to the size of the inner bag 40 accommodated in the outer box 20 and the ease of breakage. The thickness is preferably in the range of 1 to 10 mm, and more preferably in the range of 3 to 8 mm.

  By the way, in the outer box 20, irregularities may be provided on the surfaces of the front plate 22 and the rear plate 23 in accordance with a design demand or the like. FIG. 2B is a side view showing a case where such a concave and convex container is viewed from the side. 2B, when the distance between the front plate 22 and the rear plate 23 is observed in detail based on the individual irregularities, the distance between the front plate 22 and the rear plate 23 according to the irregularities. Increases or decreases. That is, strictly speaking, the outer box 20 illustrated in FIG. 2B is not configured such that the distance between the front plate 22 and the rear plate 23 decreases as the distance from the bottom 21 increases. However, also in the outer box 20 shown in FIG. 2B, it can be said that the distance between the front plate 22 and the rear plate 23 decreases as the distance from the bottom 21 decreases when the projections are roughly observed ignoring individual irregularities. . For example, when a pair of envelopes 22e, 23e in contact with the convex and concave portions 22c, 23c is drawn, the distance between the envelopes 22e, 23e decreases as the distance from the bottom 21 increases. In addition, the inner bag 40 is grasped by the consumer at the same time as the outer box 20 at the time of opening as long as the distance between the front plate 22 and the rear plate 23 decreases as the distance from the bottom 21 decreases when observed roughly. The effect is expected. Therefore, the above-mentioned condition that “the distance between the front plate 22 and the rear plate 23 decreases as the distance from the bottom 21” is at least satisfied when the shapes of the front plate 22 and the rear plate 23 are roughly observed. If you do.

  The specific configuration for setting the interval between the front plate 22 and the rear plate 23 is not particularly limited, and various configurations can be adopted. For example, the distance between the top edge 30a of the front plate 22 and the top edge 30b of the rear plate 23 is smaller than the distance between the bottom edge 33a of the front plate 22 and the bottom edge 33b of the rear plate 23. A front plate 22 and a rear plate 23 are configured. For example, as shown in FIG. 2A (b), the front plate 22 and the rear plate 23 are configured so that the top edge 30a of the front plate 22 and the top edge 30b of the rear plate 23 are in contact with each other or substantially in contact with each other. As a result, the distance between the front plate 22 and the rear plate 23 at the upper end 30 of the outer box 20 is zero or almost zero. In this case, as shown in FIG. 2A (b), the distance between the front plate 22 and the rear plate 23 becomes smaller in proportion to the distance from the bottom 21 as it goes from the bottom 21 to the upper end 30. .

  As shown in FIG. 1B and FIG. 2A, the front plate 22 and the rear plate 23 have an upper end of the outer box 20 from a vertex that is not connected to the side edge 32 of the front plate 22 or the rear plate 23 among the vertexes of the bottom portion 21. Ruled lines 22a, 22b, 23a, and 23b extending toward 30 may be formed. By forming such ruled lines 22a, 22b, 23a, and 23b, the surface shapes of the front plate 22 and the rear plate 23 can be stably maintained. These ruled lines 22a, 22b, 23a, and 23b may be formed so as not to reach the cut portion 26 as shown in FIGS. 1B and 2A (a) (b).

  In FIG. 1B and FIG. 2A (a), an example is shown in which each ruled line 22a, 22b, 23a, 23b is orthogonal to the bottom 21 when viewed from the front. However, the present invention is not limited to this, and the angles and lengths of the ruled lines 22a, 22b, 23a, and 23b are appropriately set according to the requirements for the surface shapes of the front plate 22 and the rear plate 23.

As indicated by reference numeral 27 in FIG. 1B, the top plate 27 may be attached to the upper end 30 of the outer box 20. In the example shown in FIG. 1B, the top plate 27 is connected to the front plate 22 with the top edge 30a of the front plate 22 as a fold line, and is fixed to the rear plate 23 with an adhesive or hot melt. By providing such a top plate 27, the position of the top edge 30b of the rear surface plate 23 with respect to the top edge 30a of the front surface plate 22 can be fixed. For example, the top plate 27 can be fixed to the front plate 22 so that the top edge 30a of the front plate 22 and the top edge 30b of the rear plate 23 are in contact with each other. This makes it possible to set the interval d ₂ more precisely between the rear plate 23 and front plate 22 in the cutting portion 26. As will be described later, in the process of housing the inner bag 40 in the outer box 20, the adjustment of the position of the inner bag 40 with respect to the outer box 20 can be facilitated. Note that the inner surface of the top plate 27 may be fixed (adhered) to the outer surface of the rear plate 23, or the outer surface may be fixed (adhered) to the inner surface of the rear plate 23. Good.

(Blank board)
Next, with reference to FIG. 3, the blank board 20A for producing the outer box 20 is demonstrated. FIG. 3 is a diagram illustrating a case where the blank plate 20 </ b> A is viewed from the side that is the inner surface of the outer box 20. As shown in FIG. 3, portions corresponding to the bottom 21 of the outer box 20 and the plates 22 and 23 are assigned to the blank plate 20A. Each part of the blank plate 20A is connected via a ruled line. In the blank plate 20A shown in FIG. 3, a portion represented by a one-dot chain line indicates a ruled line formed on the blank plate 20A. The specific structure of the ruled line is not particularly limited as long as the blank plate 20A can be bent along the ruled line. For example, each ruled line of the blank plate 20 </ b> A is a groove formed on the blank plate 20 </ b> A, and is configured by a groove positioned on the outside when assembled as the outer box 20. In the following description, the ruled line formed on the blank plate 20A is also referred to as a bottom edge, a top edge, a side edge, and the like after being assembled as the outer box 20. Moreover, in the blank board 20A shown in FIG. 3, the same code | symbol as the case of the outer box 20 is attached | subjected to the part corresponding to each element of the outer box 20 shown to FIG. 1B.

  As shown in FIG. 3, the blank plate 20A includes a front plate 22 and a rear plate 23 connected to each other via a side edge 32, and a bottom plate connected to the front plate 22 via bases 31a, 31b, and 31c. 21a, 21b, 21c, bottom plates 21d, 21e, 21f connected to the rear plate 23 via bases 31d, 31e, 31f, and a top plate 27 connected to the front plate 22 via the top edge 30a , Including. The bottom plates 21 a to 21 f are portions for configuring the bottom portion 21 of the outer box 20. For example, the bottom part 21 of the outer case 20 is comprised by mutually joining bottom plate 21a-21f by arbitrary combinations. In FIG. 2, the pair of triangular marks with the symbol b (1) represents that the portions with the triangular symbols with the same reference numerals are joined to each other when the outer box 20 is assembled. Yes. The same applies to the triangular marks to which the symbols b (2) to b (5) are attached.

  As shown in FIG. 3, among the bottom plates 21a to 21f, the bottom plate 21b connected to the front plate 22 through the bottom 31b corresponding to the central portion of the front plate 22 has a hexagonal shape. ing. The bottom plates 21a to 21f are arranged and configured so that the outline of the bottom 21 is substantially determined based on the bottom plate 21b having a hexagonal shape. For example, when the outer box 20 is produced using the blank plate 20A, the bottom plate 21b is disposed on the bottom side.

  As shown in FIG. 3, a joining piece 34 is connected to the rear plate 23 via a side edge 32. The joining piece 34 is joined to the front plate 22 as indicated by reference sign b (2). The joining piece 34 may be connected to the front plate 22. In this case, the joining piece 34 is joined to the rear plate 23.

As the material of the blank plate 20A, cardboard having a shape retaining property, a plastic sheet or the like can be used. For example, for the blank plate 20A, first, a material plate 50 made of cardboard or coated cardboard is prepared, and then a printing layer, a polishing layer, or a surface protection layer is formed on the material plate 50 as necessary. Then, the blank plate 50 can be produced by die cutting using a punching die in which a ruled line, a cutting blade or the like is incorporated. The basis weight ^is suitably ^{150g / m 2 ~400g / m 2} .

Inner Bag Next, the inner bag 40 accommodated in the outer box 20 will be described with reference to FIGS. 4A and 5. 4A is a front view showing the inner bag 40, and FIG. 5 is a cross-sectional view showing a case where the packaging material 41 for producing the inner bag 40 is viewed along the line V-V shown in FIG. 4A. is there. The inner bag 40 has a pair of front surface 40a and back surface 40b facing each other. The inner bag 40 is accommodated in the outer box 20 such that its front surface 40 a faces the front plate 22 of the outer box 20 and its rear surface 40 b faces the rear plate 23 of the outer box 20.

  In FIG. 4A, as an example of the inner bag 40, a pillow type bag manufactured by thermally bonding the edges of a rectangular packaging material is shown. In this case, the thermal bonding portion formed by thermal bonding includes an upper thermal bonding portion 42a extending along the upper edge of the inner bag 40, a lower thermal bonding portion 42b extending along the lower edge of the inner bag 40, A central thermal bonding portion 42c extending from the upper edge to the lower edge of the bag 40. The central thermal bonding portion 42 is formed inside the side edge of the inner bag 40.

  As shown in FIG. 4A, the inner bag 40 has an easy-open portion 43 that crosses the inner bag 40. The easy-open portion 43 is a portion that has been processed to facilitate opening of the inner bag 40. For example, as shown partially enlarged in FIG. 4A, the easy-open portion 43 is configured as an assembly of a plurality of dotted half-cut portions 43a formed in the inner bag 40. By forming the easy-opening portion 43 as described above, the inner bag 40 can be opened with a small force, whereby the simultaneous opening of the outer box 20 and the inner bag 40 can be realized.

  The easy-open portion 43 is formed at a position corresponding to the cut portion 26 of the outer box 20. Specifically, the easy-open portion 43 is arranged so that the cut portion 26 of the outer box 20 and the easy-open portion 43 of the inner bag 40 overlap at least partially in the height direction. For this reason, the force applied by the consumer to the cut portion 26 of the outer box 20 is simultaneously applied to the easy-open portion 43 of the inner bag 40.

By the way, it is conceivable that the position of the inner bag 40 with respect to the outer box 20 varies during transportation. For example, as shown in FIG. 4A, when the lower edge of the inner bag 40 is constituted by the lower thermal bonding portion 42b, the lower thermal bonding is performed according to the weight of the contents in the inner bag 40 and the orientation of the inner bag 40. It is conceivable that the portion 42b is bent, and as a result, the position of the easy opening portion 43 of the inner bag 40 with respect to the cut portion 26 of the outer box 20 changes in the height direction. Assuming such a case, preferably, the dimension l ₂ of easy-opening portion 43 in the height direction is larger than the dimension l ₁ of the lower thermal bonding portion 42b in the height direction. More preferably, the dimension l ₂ is at least twice the dimension l ₁ . Accordingly, the cut portion 26 of the outer box 20 and the easy-open portion 43 of the inner bag 40 can be overlapped in the height direction regardless of the bent state of the lower thermal bonding portion 42b. Note that the position of the easy-opening portion 43 of the inner bag 40 with respect to the cut portion 26 of the outer box 20 changes in the height direction. It can also occur when not. Therefore, the reference for determining the dimension l ₂ of the easy-opening portion 43 in the height direction is not limited to the dimension l ₁ of the lower thermal bonding portion 42b. The dimension l ₂ of the easy-opening portion 43 in the height direction is determined based on the type of the inner bag 40 used, the type of contents accommodated in the inner bag 40, and the like. It is set appropriately after estimating possible displacement.

  In the example shown in FIG. 4A, an example is shown in which the easy-open portion 43 is formed so as to go around the inner bag 40 in the horizontal direction. On the other hand, it is conceivable that once the inner bag 40 has started to break, the break can proceed even in a portion where the easy-open portion 43 is not formed. Therefore, the easy opening part 43 should just be formed in the location used as the starting point of a fracture | rupture of the inner bag 40 at least. By the way, the outer box 20 is generally opened from a cut portion 26 formed at one of the pair of side edges 32 of the front plate 22 and the rear plate 23 as a starting point. For this reason, the easy-opening portion 43 of the inner bag 40 is formed at least at a position facing one of the pair of side edges 32 of the outer box 20, that is, at the side edges of the front surface 40 a and the back surface 40 b of the inner bag 40. Just do it.

  In the case where the inner bag 40 is a pillow type bag, a central thermal bonding portion 42 c exists inside the side edge of the inner bag 40. The central thermal bonding portion 42c is a portion formed by thermally bonding a pair of opposing side edge portions (side edges and its peripheral portions) of the packaging material. For this reason, the central thermal bonding portion 42c It is hard to break compared with the part. Therefore, even if the easy-opening portion 43 is not formed so as to go around the inner bag 40 in the horizontal direction, the easy-opening portion 43 is preferably formed in the central thermal bonding portion 42c. FIG. 4B (a) is a diagram illustrating an example of the inner bag 40 in the case where the easy-open portion 43 that makes a round in the horizontal direction is not formed. FIG. 4B (b) is a diagram showing an example of the packaging material 41 for forming the inner bag shown in FIG. 4B (a). In the packaging material 41 shown to FIG. 4B (b), the part which should become the surface 40a of the inner bag 40, the back surface 40b, and the heat bonding parts 42a-42c later is virtually divided with the dotted line.

  As shown in FIG. 4B (a), the easy-opening portion 43 of the inner bag 40 includes at least the front surface 40a or the back surface of the first easy-opening portion 431 formed on the side edge of the inner bag 40 and the central thermal bonding portion 42c. And a second easy-open portion 432 formed in a portion including a region in contact with 40b. As shown in FIGS. 4B (a) and 4 (b), the second easy-opening portion 432 is the first easy-opening portion of the pair of side edge portions of the packaging material 41, which later becomes the central thermal bonding portion 42c. It is formed at least on the side edge portion located farther from 431. 4B (a) and 4 (b), the easy-open portion 43 of the inner bag 40 is on a line connecting the first easy-open portion 431 and the second easy-open portion 432, and the second A third easy-open portion 433 formed in a portion adjacent to the easy-open portion 432 may be further included.

  Next, with reference to FIG. 5, the layer structure of the packaging material 41 which comprises the inner bag 40 is demonstrated. As shown in FIG. 5, the packaging material 41 includes an outer layer 46 that forms the outer surface of the inner bag 40 and an inner layer 48 that forms the inner surface of the inner bag 40.

  The outer layer 46 is a basic material constituting the packaging material 41 and is made of a synthetic resin having excellent properties in mechanical, physical, chemical and the like. As the outer layer 46, for example, a resin such as polyester, polyamide, or polypropylene can be used. In consideration of printability and processability, a film stretched in a uniaxial direction or a biaxial direction may be used as the outer layer 46. At this time, preferably, the stretching direction of the film constituting the outer layer 46 is set so that the inner bag 40 is easily broken along the same direction as the direction in which the cut portion 26 of the outer box 20 extends. In addition, when the outer layer 46 has sufficient easy-openability by stretching, the above-described half-cut portion 43a may not be formed. That is, the easy-open portion 43 may be realized by stretching. The thickness of the outer layer 46 is, for example, in the range of 12 to 25 μm.

  As a material constituting the inner layer 48, a material that can be melted by heat and melted to each other is used. For example, low density polyethylene, medium density polyethylene, high density polyethylene, linear (linear) low density polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid copolymer, ethylene-acrylic acid A resin comprising one or more of methyl copolymer, ethylene-methacrylic acid copolymer, ethylene-propylene copolymer or the like, or a sheet obtained by forming a film thereof can be used. The thickness of the inner layer 48 is, for example, in the range of 13 to 70 μm.

  As shown in FIG. 5, an intermediate layer 47 may be disposed between the outer layer 46 and the inner layer 48. The intermediate layer 47 is provided when the outer layer 46 and the inner layer 48 alone cannot sufficiently function as a bag. Examples of the function supplemented by the intermediate layer 47 include gas barrier properties, mechanical toughness, flex resistance, impact resistance, cold resistance, heat resistance, and the like. For example, when the intermediate layer 47 is provided for gas barrier properties, the intermediate layer 47 is made of a material having a barrier property such as aluminum. In addition, polyester-based, polyamide-based, polyolefin such as polyethylene and polypropylene, polyvinyl chloride, polyvinyl alcohol, ethylene-polypropylene copolymer, ethylene-vinyl alcohol copolymer film, etc. A film provided with a vinylidene thin film, a film formed by vapor deposition of an inorganic substance or inorganic oxide such as aluminum, silicon oxide, aluminum oxide, indium oxide, tin oxide, zirconium oxide, or a film of polyvinylidene chloride, or paper, cellophane, The intermediate layer 47 can be configured using synthetic paper or the like. Furthermore, another layer may be disposed outside the outer layer 46.

  Next, the easy-open portion 43 will be described. As shown in FIG. 5, each half-cut portion 43 a of the easy-open portion 43 is configured not to reach at least the inner layer 48. Thereby, it is possible to prevent the sealing performance of the inner bag 40 from being deteriorated by the easy opening portion 43. The method for forming such a half cut part 43a is not particularly limited. For example, the outer layer 46 before being laminated can be cut using a cutter, thereby forming the half-cut portion 43a. Alternatively, the outer layer 46 after being laminated can be cut using a cutter or a laser, thereby forming the half-cut portion 43a. In addition, when the intermediate | middle layer 47 is provided in order to supplement gas barrier property, it is preferable that the half cut part 43a is comprised so that the intermediate | middle layer 47 may not be reached. On the other hand, when the intermediate layer 47 is provided to supplement mechanical toughness, bending resistance, impact resistance, cold resistance, heat resistance, etc., the half-cut portion 43 a may reach the intermediate layer 47. .

  Next, the operation and effect of the present embodiment having such a configuration will be described. Here, first, a method of manufacturing the composite container 10 in which the inner bag 40 is accommodated in the outer box 20 will be described. Next, a method for opening the composite container 10 will be described.

Production process view of a composite container 6 (a) (b) ( c) is a diagram showing an example of a method of manufacturing a composite container 10, in cross-sectional view showing the outer box 20 and the inner bag 40 in the manufacturing process is there.

  First, a blank plate 20A is prepared. Next, as shown in FIG. 6A, the front plate 22 and the joining piece 34 connected to the rear plate 23 are bent along the side edges 32, respectively. At this time, after the bottom plates 21a to 21f are bent at the bottom edges 31a to 31f, the bottom plates 21a, 21c, 21d and 21f are sandwiched between the bottom plate 21b and the bottom plate 21e, and the bottom plates 21b and 21e, Further, the bottom plate 21e and the bottom plates 21d and 21e may be bonded. At this time, the bottom plate 21 b may be the outermost surface of the outer box 20.

  Then, as shown in FIG.6 (b), the inner bag 40 with which the content was filled in in the space enclosed by the front plate 22, the rear plate 23, and the joining piece 34 is inserted. Here, according to the present embodiment, the simultaneous opening of the outer box 20 and the inner bag 40 can be realized based on the shape feature of the outer box 20 as described above. For this reason, it is not necessary to fix the opening part of the outer box 20 and the inner bag 40 with an adhesive agent. Therefore, in the step shown in FIG. 6B, the inner bag 40 can be inserted without precisely adjusting the position of the inner bag 40 with respect to the rear plate 23, and thus the process can be simplified. Further, when the outer box 20 is made of paper and the inner bag 40 is made of a plastic film, the paper and plastic can be separated and discarded, which is excellent in discardability.

  The “opening portion” is a portion of the outer box 20 and the inner bag 40 that is separated from the main body portion when opening. In addition, the “main body portion” is a portion corresponding to the contents of the inner bag 40 among the two portions generated by being separated by the opening operation in the outer box 20 and the inner bag 40. For example, in the outer box 20, a portion above the cut portion 26 is an opening portion, and a portion below the cut portion 26 is a main body portion. Moreover, in the inner bag 40, the part above the easy-opening part 43 is an opening part, and the part below the easy-opening part 43 is a main-body part.

  Next, as shown in FIG. 6C, the front plate 22 and the joining piece 34 are joined together. Thus, the composite container 10 including the outer box 20 and the inner bag 40 accommodated in the outer box 20 can be obtained.

  In addition, the method of manufacturing the composite container 10 is not limited to the method shown in FIGS. 6 (a), (b), and (c). Another example of the method for manufacturing the composite container 10 will be described below with reference to FIG.

  In the example shown in FIG. 7, the blank plate 20 </ b> A is prepared first, and then the positions of the front plate 22 and the rear plate 23 are fixed by joining the joining piece 34 to the front plate 22. At this time, the bottom of the outer box 20 is left open. Thereafter, as shown in FIG. 7, the inner bag 40 is inserted into the outer box 20 from the opened bottom. At this time, the upper end 30 of the outer box 20 is preferably closed by the top plate 27. In this case, the top plate 27 can function as a stopper in the insertion direction of the inner bag 40. For this reason, the insertion position of the inner bag 40 can be determined by the top plate 27. Therefore, the easy opening portion 43 of the inner bag 40 can be more easily aligned with the cut portion 26 of the outer box 20.

With reference to the method unsealing of the composite container now to FIG 8 (a) (b), illustrating an exemplary method of opening the composite container 10. First, the consumer places both hands around the cut portion 26 of the outer box 20 of the composite container 10. In FIG. 8 (a), an example of the place where the thumb of the right hand of the consumer is placed and the place where the thumb of the left hand is placed are indicated by reference numerals f (1) and f (2), respectively. The fingers other than the thumb are arranged on the rear plate 23 side.

  Next, the consumer grasps the front plate 22 and the rear plate 23 with their respective hands, thereby narrowing the distance between the front plate 22 and the rear plate 23. Here, according to the present embodiment, as described above, the distance between the front plate 22 and the rear plate 23 decreases as the distance from the bottom 21 increases. For this reason, when the consumer grips the periphery of the cut portion 26 of the outer box 20, the inner bag 40 is simultaneously gripped by the consumer via the outer box 20. Therefore, as shown in FIG. 8B, when the outer box 20 is opened along the cut portion 26 by the consumer, the inner bag 40 is also opened at the same time. In this way, simultaneous opening of the outer box 20 and the inner bag 40 can be realized. In FIG. 8B, a main body portion which is a lower portion of the outer box 20 after being opened is indicated by reference numeral 36, and a lid portion which is an upper portion is indicated by reference numeral 37.

  Note that various modifications can be made to the above-described embodiment. Hereinafter, an example of modification will be described with reference to the drawings. In the following description and the drawings used in the following description, the same reference numerals as those used for the corresponding parts in the above embodiment are used for the parts that can be configured in the same manner as in the above embodiment. A duplicate description is omitted.

Modified Example of Blank Plate and Outer Box In the blank plate 20A according to the above-described embodiment, an example in which the pair of side edges 32 of the front plate 22 and the rear plate 23 extend substantially in parallel is shown. However, the present invention is not limited to this, and in the blank plate 20A, the distance between the pair of side edges 32 of the pair of side edges 32 of the front plate 22 and the rear plate 23 increases as the distance from the bottom edges 33a and 33b increases. It may be configured as follows. For example, as shown in FIG. 10, the front plate 22 and the rear plate 23 may be configured as trapezoids in which the top edges 30 a and 30 b are longer than the bottom edges 33 a and 33 b. FIG. 9 is a perspective view showing the outer box 20 produced by using the blank plate 20A shown in FIG. By using the blank plate 20 </ b> A shown in FIG. 10, as shown in FIG. 9, the distance between the pair of side edges 32 of the front plate 22 and the rear plate 23 of the outer box 20 increases as the distance from the bottom portion 21 increases.

  Hereinafter, effects obtained by using the outer box 20 and the blank plate 20A shown in FIGS. 9 and 10 will be described. Here, with reference to FIG. 11 (a) (b), the effect at the time of closing the opening part of the main-body part 36 using the cover part 37 produced | generated at the time of opening is demonstrated.

(Method for closing the composite container)
As shown in FIGS. 11A and 11B, it is conceivable to use the lid portion 37 separated from the main body portion 36 as a member for closing the opening at the upper end of the main body portion 36. If it is possible to cover the main body portion 36 with the lid portion 37, it is easier for the contents in the inner bag 40 to deteriorate due to moisture or the like than when the upper end of the main body portion 36 is open. Can be suppressed. Moreover, it is possible to prevent dust in the air from entering the inner bag 40.

  By the way, in order to cover the lid portion 37 on the main body portion 36, the width of the lid portion 37 is required to be larger than the width of the main body portion 36. Here, according to the present modification, as described above, the distance between the pair of side edges 32 of the front plate 22 and the rear plate 23 increases as the distance from the bottom 21 increases. In this case, in the state where the upper end of the main body portion 36 is inserted into the lid portion 37, the width of the upper end of the main body portion 36 is smaller than the width of the lid portion 37 around the upper end of the main body portion 36. . For this reason, the cover part 37 can be covered on the main body part 36 without greatly deforming the main body part 36.

In the present modification, the cut portion 26 may be configured so that the front plate 22 and the rear plate 23 are cut over a predetermined range in the height direction when the outer box 20 is opened. For example, as shown in FIGS. 9 and 10, a series of cut portions 26 that cross the front plate 22 and the rear plate 23 may be formed in two stages on the front plate 22 and the rear plate 23. As a result, when the outer box 20 is formed, a portion of the front plate 22 and the rear plate 23 sandwiched between the two cut portions 26 can be cut out. Here, according to the present modification, as described above, the distance between the pair of side edges 32 of the front plate 22 and the rear plate 23 increases as the distance from the bottom 21 increases. For this reason, as shown in FIG. 11A, the width w ₂ ′ of the upper end of the main body portion 36 in the main body portion 36 and the lid portion 37 remaining after the portion sandwiched between the two-stage cutting portions 26 is cut off. , The width of the lower end of the lid portion 37 is smaller than the width w ₂ ″. Thereby, the operation of covering the lid portion 37 on the main body portion 36 can be facilitated. It can suppress that the part 36 deform | transforms.

As shown in modification and FIG. 12 of the outer box, the front plate 22 and rear plate 23 of the outer box 20, it ruled line 22d extending toward the bottom portion 21 from the cutting portion 26, may 23d is formed. In this case, when the pair of side edges 32 of the main body 36 are pushed inward after opening, the front plate 22 and the rear plate 23 can be folded in a mountain-folded state along the ruled lines 22d and 23d. Thereby, the upper end of the main-body part 36 can fully be opened, and the content in the inner bag 40 can be easily taken out by this.

  As shown in FIG. 13, the cut portion 26 of the outer box 20 may further include a cutout portion 26 h formed in the front plate 22 and the rear plate 23. As a result, the force required to start breaking the cut portion 26 can be further reduced. The notch 26h may be configured so that the consumer can visually recognize the inner bag 40 in the outer box 20. Thereby, the consumer can confirm whether or not the inner bag 40 is gripped at the same time when the outer box 20 is grasped and the outer box 20 is opened. As a result, simultaneous opening of the outer box 20 and the inner bag 40 can be more reliably realized.

  Further, in the outer box 20 according to the above-described embodiment, an example in which the upper end 30 of the outer box 20 before opening is closed by the top plate 27 is shown. However, the present invention is not limited to this, and the upper end 30 of the outer box 20 may be opened as shown in FIG. In this case, an opening 30 m is formed at the upper end 30. Alternatively, the inner surface of the front plate 22 and the inner surface of the rear plate 23 may be bonded so that the upper end 30 is closed.

  Further, as shown in FIG. 15, the insertion piece 22i may be formed on either the front plate 22 or the rear plate 23, and the receiving portion 23r into which the insertion piece 22i is inserted may be formed on the other. Thereby, the opening part of the upper end of the main-body part 36 after opening can be closed easily. Such insertion piece 22 i may be a portion formed when the outer box 20 is opened along the cut portion 26. For example, as shown in FIG. 15, the cutting portion 26 may further include a plurality of third cutting portions 26 c arranged in an arc shape. In this case, the outer box 20 is broken along the third cutting portion 26 c, whereby the arc-shaped insertion piece 22 i can be formed at the upper end of the main body portion 36. At this time, a ruled line 26e for bending the arc-shaped insertion piece 22i may be formed.

Incidentally, the consumer generally tries to break the outer box 20 along the direction crossing the outer box 20, that is, along the direction in which the plurality of first cut portions 26a of the cutting portion 26 are arranged. Outside this case, the interval t ₂ between the third cutting portion 26c when the distance t ₁ is greater than or equal to between the first cutting unit 26a, along the direction in which the plurality of first cutting portion 26a are arranged The box 20 cannot be broken. That is, the outer box 20 and the inner bag 40 cannot be opened simultaneously. Therefore, in order to reliably broken along the outer box 20 to the third cutting unit 26c, preferably, the interval t ₂ between the third cutting portion 26c, each first cut extending in a direction transverse to the outer box 20 It is smaller than the interval _{t 1} between the parts 26a.

  The shape of the insertion piece 22i is not limited to the arc shape. For example, the insertion piece 22i may have a rectangular shape, or may have a U-shape.

Modification of Inner Bag Also, in the above-described embodiment, an example is shown in which the inner bag 40 is configured as a pillow type bag. However, the configuration of the inner bag 40 is not limited to the above example. For example, as shown in FIG. 16, the inner bag 40 is configured as a four-side sealed bag including thermal bonding portions 42 a, 42 b, 42 d, 42 e extending along the upper edge, the lower edge, and a pair of side edges of the inner bag 40. May be. Or as shown in FIG. 17, the inner bag 40 may be comprised as a three-sided sealing bag containing the heat bonding part 42a, 42d, 42e extended along the upper edge of an inner bag 40, and a pair of side edge. In the example shown in FIGS. 16 and 17, the easy-open portion 43 may be configured as a cutout portion formed in at least one of the pair of side thermal bonding portions 42 d and 42 e.

In the blank plate 20A according to the above-described embodiment, the portions for forming the front plate 22 and the rear plate 23 of the outer box 20 are each divided as continuous portions. . However, the present invention is not limited to this, and the portion for constituting the front plate 22 or the rear plate 23 of the outer box 20 may be partitioned into the blank plate 20A in a state of being divided into two or more portions. . For example, as shown in FIG. 18, the portion to be the rear plate 23 of the outer box 20 may be divided into a first rear plate 23 (1) and a second rear plate 23 (2) in the blank plate 20 </ b> A. In this case, the joining piece 34 is connected to at least one of the first rear plate 23 (1) and the second rear plate 23 (2). Then, the rear plate 23 of the outer box 20 can be configured by bonding the first rear plate 23 (1) and the second rear plate 23 (2) to each other using the bonding piece 34. In the embodiment described below, even if the rear plate 23 is divided into two parts in the blank plate 20A, the same reference numeral 23 is used for the two parts.

  In addition, although some modified examples with respect to the above-described embodiment have been described, naturally, a plurality of modified examples can be applied in combination as appropriate.

Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. In the second embodiment shown in FIG. 19 to FIG. 21, the same parts as those in the first embodiment shown in FIG. 1 to FIG. Also in the present embodiment, there is no adhesive element such as an adhesive between the outer box 20 and the inner bag 40. That is, the inner bag 40 is not bonded to the outer box 20. Even in this case, the outer box 20 and the inner bag 40 can be simultaneously opened by adopting the outer box structure described later.

  FIG. 21 is a plan view showing a blank plate 20A according to the present embodiment. FIG. 19 is a perspective view showing the outer box 20 produced by using the blank plate 20A shown in FIG. 20A, 20B, and 20C are a front view, a side view, and a bottom view, respectively, showing the outer box 20 according to the present embodiment. As in the case of the first embodiment described above, the inner bag 40 in which the easy-open portion 43 is formed at a position corresponding to the cut portion 26 of the outer box 20 can be accommodated in the outer box 20.

  As shown in FIG. 21, the bottom plate 21 b connected to the front plate 22 through the bottom 31 b corresponding to the central portion of the front plate 22 has a quadrangular shape. Thus, the shape of the bottom plate 21b connected to the front plate 22 via the bottom 31b is not limited to the hexagon as in the case of the first embodiment described above, and various polygons can be used. Can be selected.

Further, as shown in FIG. 21, the blank plate 20A has a bottom plate 21af connected to the front plate 22 through the bottom 31a and also connected to the second rear plate 23 (2) through the bottom 31f. Is provided. Similarly, the blank plate 20A is provided with a bottom plate 21cd connected to the front plate 22 via the bottom 31c and also connected to the first rear plate 23 (1) via the bottom 31d. By providing such bottom plate 21af, 21cd, various effects and advantages are expected. For example, the angle θ formed between the bottom 31a and the bottom 31f when the outer box 20 is not the blank plate 20A, as compared to the case where separate bottom plates are connected to the bottom 31a and the bottom 31f. ₁ can be an obtuse angle close to 180 degrees. Similarly, the angle theta ₂ which is formed between the base 31c and the bottom 31d, may be an obtuse angle close to 180 degrees. As a result, the distance d ₁ between the front plate 22 and the rear plate 23 in the bottom portion 21 can be increased, and thereby a sufficient volume can be secured inside the outer box 20.

  In FIG. 19 and FIG. 20C, an example in which the bottom 21 has a hexagonal outline is shown. However, in the present embodiment, the contour of the bottom portion 21 is not limited to the hexagonal shape. For example, by appropriately setting the lengths of the bases 31a to 31f and the lengths of the pair of side edges 32, the base 31a and the base 31f are aligned in a straight line when the outer box 20 is not the blank plate 20A, and The base 31c and the base 31d can be arranged in a straight line. In this case, the bottom 21 has a quadrangular outline including four vertices.

  Note that, even if the bottom 21 has a quadrangular or hexagonal outline, it is preferable that the front plate 22 and the rear plate 23 have the front plate 22 or the rear plate 23 among the apexes of the bottom 21. Ruled lines 22 a, 22 b, 23 a, and 23 b extending from the vertexes not connected to the side edges 32 toward the upper end 30 are formed. Thereby, the surface shapes of the front plate 22 and the rear plate 23 can be stably maintained. These ruled lines 22a, 22b, 23a, and 23b may be formed so as not to reach the cut portion 26.

  Also in the present embodiment, as in the case of the first embodiment described above, the front plate 22 and the rear plate 23 become smaller as the distance between the front plate 22 and the rear plate 23 increases from the bottom portion 21. It is configured as follows. For example, the distance between the top edge 30a of the front plate 22 and the top edge 30b of the rear plate 23 is smaller than the distance between the bottom edge 33a of the front plate 22 and the bottom edge 33b of the rear plate 23. A front plate 22 and a rear plate 23 are configured. Thereby, simultaneous opening of the front plate 22 and the rear plate 23 can be realized.

  Similarly to the case of the first embodiment, each of the modifications shown in FIGS. 9 to 18 is independent or plural for the outer box 20, the blank plate 20A, and the inner bag 40 according to the present embodiment. Can be applied in combination.

Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIGS. In the third embodiment shown in FIG. 22 to FIG. 24, the same parts as those in the first embodiment shown in FIG. 1 to FIG. Also in the present embodiment, there is no adhesive element such as an adhesive between the outer box 20 and the inner bag 40. That is, the inner bag 40 is not bonded to the outer box 20. Even in this case, the outer box 20 and the inner bag 40 can be simultaneously opened by adopting the outer box structure described later.

  FIG. 24 is a plan view showing a blank plate 20A according to the present embodiment. FIG. 22 is a perspective view showing the outer box 20 produced by using the blank plate 20A shown in FIG. FIGS. 23A, 23B, and 23C are a front view, a side view, and a bottom view, respectively, showing the outer box 20 according to the present embodiment. As in the case of the first embodiment described above, the inner bag 40 in which the easy-open portion 43 is formed at a position corresponding to the cut portion 26 of the outer box 20 can be accommodated in the outer box 20.

  As shown in FIG. 24, bottom plates 21b and 21e having curved contours are connected to the front plate 22 and the rear plate 23 through curved bottom edges 31g and 31h, respectively. Specifically, each bottom plate 21b, 21e has a so-called leaf-like contour obtained by connecting two curves that protrude outward. As described above, the shapes of the bottom plates 21b and 21e connected to the front plate 22 and the rear plate 23 are not limited to polygons as in the case of the first and second embodiments described above. Various shapes can be employed.

  When the outer box 20 is manufactured using the bottom plates 21b and 21e having such leaf-shaped contours, the outer box 20 is formed so that the bottom 21 is convex toward the inner side of the outer box 20, as shown in FIG. By assembling, the stability of the surface shape of the bottom 21 can be ensured. In the present embodiment, as described above, the bottom edge 31g of the front plate 22 and the bottom edge 31h of the rear plate 23 each extend in a curved shape. For this reason, as shown in FIG. 22, even when the ruled line extending from the bottom portion 21 toward the upper end 30 is not formed on the front plate 22 and the rear plate 23, the surface shapes of the front plate 22 and the rear plate 23 are stabilized. Can be maintained. For this reason, the man-hour required for the process of producing the blank board 20A and the outer box 20 can be reduced.

  Also in the present embodiment, as in the case of the first embodiment described above, the front plate 22 and the rear plate 23 become smaller as the distance between the front plate 22 and the rear plate 23 increases from the bottom portion 21. It is configured as follows. For example, the gap between the top edge 30a of the front plate 22 and the top edge 30b of the rear plate 23 is smaller than the gap between the bottom edge 31g of the front plate 22 and the bottom edge 31h of the rear plate 23. A front plate 22 and a rear plate 23 are configured. Thereby, simultaneous opening of the front plate 22 and the rear plate 23 can be realized.

  Similarly to the case of the first embodiment, each of the modifications shown in FIGS. 9 to 18 is independent or plural for the outer box 20, the blank plate 20A, and the inner bag 40 according to the present embodiment. Can be applied in combination.

Other Modifications According to each of the above-described embodiments, simultaneous opening of the outer box 20 and the inner bag 40 is realized without fixing the opening portion of the outer box 20 and the inner bag 40 using an adhesive or the like. be able to. However, in each of the above-described embodiments, the inner bag 40 may be fixed to the outer box 20 with an adhesive in a region below the cut portion 26 of the outer box 20. Thereby, after the outer box 20 is opened, the inner bag 40 can follow the change in the outer shape of the outer box 20. For example, when the pair of side edges 32 of the main body portion 36 are pushed inward, and the opening at the upper end of the main body portion 36 is thereby widened, the opening at the upper end of the inner bag 40 is expanded following this. Can do.

DESCRIPTION OF SYMBOLS 10 Composite container 20 Outer box 20A Blank board 21 Bottom part 22 Front panel 23 Rear panel 26 Cutting part 27 Top plate 30 Upper end 32 Side edge 34 Joining piece 36 Main part 37 Cover part 40 Inner bag 41 Packaging material 42 Thermal bonding part 43 Easy opening portion

Claims (8)

A composite container comprising an outer box and an inner bag accommodated in the outer box,
The outer box has a bottom, and a front plate and a rear plate that are connected to the bottom and face each other.
The front plate and the rear plate of the outer box each have a pair of side edges extending from the upper end of the outer box to the bottom, and the front plate and the rear plate are mutually connected via the pair of side edges. Are connected,
The spacing between the front plate and the rear plate of the outer box is at least partially reduced with distance from the bottom,
In the outer box, a portion where the distance between the front plate and the rear plate decreases as the distance from the bottom portion is reduced, a series of cut portions that cross the front plate and the rear plate are formed,
The inner bag includes a lower thermal bonding portion in which a packaging material constituting the inner bag is thermally bonded along a lower edge of the inner bag,
The inner bag is at least a position corresponding to the cut portion of the outer box and facing one of the pair of side edges of the front plate and the rear plate of the outer box. to, and easy-to-open portion is formed,
The composite container in which the dimension of the easy-opening part in the height direction is at least twice the dimension of the lower thermal bonding part in the height direction . The composite container according to claim 1, wherein the easy-opening portion is configured as an assembly of a plurality of dotted half-cut portions formed in the inner bag . 3. The composite container according to claim 1, wherein a portion of the outer box that becomes smaller as the distance between the front plate and the rear plate becomes farther from the bottom reaches the upper end of the outer box. And the upper edge of the front plate of the outer box, wherein the upper edge of the outer box of the rear face plate are in contact with each other, composite container according to any one of claims 1 to 3. It said bottom of said outer box has a contour of a polygonal shape including at least four vertices, composite container according to any one of claims 1 to 4. On the front plate and the rear plate of the outer box, a ruled line extending from a vertex not connected to a side edge of the front plate or the rear plate among the vertexes of the bottom portion to the upper end of the outer box is formed. The composite container according to claim 5 . The composite container according to any one of claims 1 to 4 , wherein the bottom portion of the outer box has a leaf-like contour and is configured to be convex toward the inner side of the outer box. The composite container according to any one of claims 1 to 7 , wherein a ruled line extending from the cut portion toward the bottom is formed on the front plate and the rear plate of the outer box.

Images