JP5998668B2 - Composite container with outer box and inner bag, paper container and blank board for producing the 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, and a blank plate for producing the 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, the outer box having a bottom part and a plurality of side plates connected to the bottom part, The plurality of side plates include a front plate and a rear plate facing each other, and a pair of lateral plates connected to the front plate and the rear plate, and an interval between the front plate and the rear plate is The front plate and the rear plate are at least partially reduced as the distance from the bottom portion decreases, and a portion of the outer box that decreases as the distance between the front plate and the rear plate decreases from the bottom portion. And a series of cut portions crossing the pair of lateral plates, and the inner bag is at a position corresponding to at least the cut portions of the outer box and the pair of outer boxes. Easy opening at a position facing one of the horizontal plates 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, each of the front plate and the rear plate of the outer box includes a bottom edge in contact with the bottom portion and a top edge facing the bottom edge, and the top edge is the bottom edge. It may be longer.

  In the composite container according to the present invention, the front plate and the rear plate of the outer box each have a pair of side edges in contact with the pair of lateral plates, and the pair of side edges of the front plate and the rear plate. The interval between them may increase as the distance from the bottom increases, at least in the portion where the cut portion is formed.

  In the composite container according to the present invention, each of the pair of side edges of the front plate and the rear plate may be a side extending from the upper end of the outer box to the bottom.

  In the composite container according to the present invention, each of the pair of side edges of the front plate and the rear plate may be at least partially convex toward the inside.

  In the composite container according to the present invention, each lateral plate of the outer box has a pair of side edges in contact with the front plate and the rear plate, and the pair of side edges of each lateral plate is at the upper end of the outer box. They may cross each other at an acute angle.

  In the composite container according to the present invention, a ruled line extending from the upper end of the outer box toward the bottom may be formed on each lateral plate of the outer box so as to cross the cut portion.

  The present invention is a paper container having a bottom portion and a plurality of side plates connected to the bottom portion, and the plurality of side plates include a front plate and a rear plate facing each other, and the front plate A pair of lateral plates arranged between the face plate and the rear plate and facing each other, and the space between the front plate and the rear plate is at least partially reduced as the distance from the bottom increases, and the container A portion where the distance between the front plate and the rear plate decreases as the distance from the bottom portion increases, and a series of cut portions crossing the front plate, the rear plate, and the pair of lateral plates are formed. Each of the front plate and the rear plate includes a bottom edge in contact with the bottom portion and a top edge opposite to the bottom edge, and the top edge is a container longer than the bottom edge.

  The present invention is a blank plate for producing the paper container described above, wherein the front plate, the back plate and the pair of lateral plates of the container are arranged in one direction on the blank plate, respectively. It is the blank board arrange | positioned.

  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. FIG. 1B is a perspective view showing an outer box of the composite container shown in FIG. 1A. FIG. 1C 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. 2 is a plan view showing a blank plate for producing the outer box shown in FIG. 1B. FIG. 3 is a plan view showing a state in which a plurality of blank plates are obtained from a material plate. 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. 9A is a perspective view showing a state in which the main body portion of the outer box after being opened is closed by the lid portion of the outer box, and FIG. 9B is a main body portion closed by the lid portion. FIG. FIG. 10 is a plan view showing a modification of the blank plate. FIG. 11 is a perspective view showing a modification of the outer box. FIG. 12 is a plan view showing a blank plate for producing the outer box shown in FIG. 11. FIG. 13 is a perspective view showing a modification of the outer box. FIG. 14 is a perspective view showing a modification of the outer box. FIG. 15 is a perspective view showing a modification of the outer box. FIG. 16 is a perspective view showing a modification of the outer box. FIG. 17 is a plan view showing a blank plate corresponding to a modification of the outer box. FIG. 18 is a plan view showing a blank plate corresponding to a modification of the outer box. FIG. 19 is a plan view showing a blank plate corresponding to a modification of the outer box. FIG. 20 is a plan view showing a blank plate corresponding to a modification of the outer box. FIG. 21 is a front view showing a modification of the inner bag. FIG. 22 is a front view showing a modification of the inner bag.

  Hereinafter, embodiments 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 FIG. 1B, FIG. 1C, 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. FIG. 2 is a plan view showing a blank plate 20A for producing the outer box 20 shown in FIG. 1B.

  As shown in FIG. 1B, the outer box 20 has a bottom portion 21 and four side plates connected to the bottom portion 21 via folding lines 31a, 31b, 31c, and 31d. The four side plates of the outer box 20 include a front plate 22 and a rear plate 23 facing each other, and a pair of horizontal plates 24 and 25 connected to the front plate 22 and the rear plate 23 via folding lines 32 and 33, respectively. Contains. In the following description, a fold line between the bottom 21 and the front plate 22, the rear plate 23, and the pair of lateral plates 24, 25 is defined as bottom edges 31a, 31b, 31c of the plates 22, 23, 24, 25. , 31d. The fold line between the front plate 22 and the pair of horizontal plates 24 and 25 is also referred to as the front plate 22 or the side edges 32 of the horizontal plates 24 and 25. Similarly, the fold line between the rear surface plate 23 and the pair of lateral surfaces plates 24 and 25 is also referred to as the rear surface plate 23 or the side edges 33 of the lateral surface plates 24 and 25.

  Each of the front plate 22 and the rear plate 23 has top edges 30a and 30b facing the bottom edges 31a and 31b in contact with the bottom 21, and the top edges 30a and 30b constitute the upper end 30 of the outer box 20. Yes.

  As shown in FIG. 1B, a series of cut portions 26 that cross the front plate 22, the rear plate 23, and the pair of lateral plates 24 and 25 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. 2, the cutting portion 26 includes a plurality of first cutting portions 26 a that extend in a direction crossing the outer box 20 and are arranged with an interval t ₁ therebetween. 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. 2, the cutting portion 26 may further include a second cutting portion 26b that is connected to the first cutting portion 26a and extends obliquely downward from the first cutting 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.

  In the present embodiment, the “plate” is a concept including not only a flat surface but also a curved surface. Accordingly, the front plate 22, the rear plate 23, and the horizontal plates 24 and 25 may be planar as shown in FIG. 1B, or may be curved.

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 Further, at the upper end 30 of the outer box 20, the top edge 30a of the front plate 22 and the top edge 30b of the rear plate 23 are in contact with or substantially in contact with each other. As a result, the front plate 22 at the upper end 30 of the outer case 20 The distance between the rear plate 23 is zero or almost zero. 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. 1C is a side view showing a container provided with such unevenness as viewed from the side of the lateral plate 24. 1C, 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 shown in FIG. 1C 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. 1C, it can be said that the distance between the front plate 22 and the rear plate 23 becomes smaller 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.

  As described above, 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, it is conceivable that the lateral plates 24 and 25 are configured such that the distance between the pair of side edges 32 and 33 of the lateral plates 24 and 25 becomes smaller as the distance from the bottom portion 21 increases. In this case, the pair of side edges 32 and 33 of the lateral plates 24 and 25 may intersect each other at an acute angle at the upper end 30 of the outer box 20. For example, as shown in FIG. 1B, each of the pair of side edges 32 and 33 includes side edges 32a and 33a that extend from the upper end 30 of the outer box 20 to the bottom 21 and intersect at an acute angle at the upper end 30. In this case, the lateral plates 24 and 25 are each configured as a triangle having an acute angle that contacts the upper end 30 of the outer box 20. The front plate 22 is configured as a trapezoid including a bottom edge 31a, a top edge 30a, and a pair of side edges 32a. Similarly, the rear surface plate 23 is configured as a trapezoid including a bottom edge 31b, a top edge 30b, and a pair of side edges 33a. In the present embodiment, “side” means an element extending linearly.

  Preferably, the length of the pair of side sides 32a and 33b of the lateral plates 24 and 25 is the same. That is, the lateral plates 24 and 25 are each configured as an isosceles triangle. As a result, the symmetry of the shape of the outer box 20 can be increased, and this allows the consumer to more easily grasp the front plate 22 and the rear plate 23 when opening.

  The smaller the angle θ formed between the pair of side edges 32a and 33a of the lateral plates 24 and 25, the more the consumer simultaneously holds the periphery of the cut portion 26 of the outer box 20 and the inner bag in the outer box 20 at the same time. 40 becomes easy to be grasped. On the other hand, the smaller the angle θ between the side edges 32a and 33a, the smaller the width of the opening formed in the cut portion 26 after opening, and the more difficult it is to take out the contents in the inner bag 40. The angle θ between the side edges 22 and 23 is appropriately set in consideration of the balance between these advantages and disadvantages. For example, the angle θ between the side edges 22 and 23 is in the range of 3 to 20 degrees, and more preferably in the range of 5 to 15 degrees.

  Preferably, the top edge 30 a of the front plate 22 is longer than the bottom edge 31 a of the front plate 22. Similarly, the top edge 30 b of the rear surface plate 23 is longer than the bottom edge 31 b of the rear surface plate 23. Thereby, as will be described later, it is possible to increase the handling convenience when cutting the blank plate 20A from the material plate.

Preferably, the distance between the pair of side edges 32 of the front plate 22 increases as the distance from the bottom 21 increases at least in the portion where the cut portion 26 is formed. For example, the distance between the pair of side edges 32 in the bottom portion 21 is w ₁ , the distance between the pair of side edges 32 in the cut portion 26 is w _2, and the distance between the pair of side edges 32 in the upper end 30 is w ₃ . If you, the distance _{w 3} larger than the interval _{w 2,} and the interval _{w 2} is larger than the interval _{w 1.} As a result, as will be described later, it is possible to facilitate the operation of covering the main body portion 36 with the lid portion 37 obtained by cutting the outer box 20 along the cutting portion 26.

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, whereby the front surface plate 22 and the rear surface plate 23 in the cut portion 26 can be fixed. it is possible to set the interval d ₂ between more precisely. 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.

  The pair of lateral plates 24 and 25 may be configured to be bent along the vertical direction as necessary. For example, as shown in FIG. 1B, ruled lines 24 a and 25 a that intersect with the cut portion 26 and extend from the upper end 30 to the bottom 21 of the outer box 20 may be formed on each of the lateral plates 24 and 25. In this case, the ruled lines 24a and 25a are preferably formed by bending the horizontal plates 24 and 25 (so-called mountain folds) so that the ruled lines 24a and 25a protrude outward, and the ruled lines 24a and 25a are inward. Both side plates 24 and 25 are folded in a manner pushed in the direction (so-called valley folding) so that both can be realized depending on the situation.

(Blank board)
Next, with reference to FIG. 2, the blank board 20A for producing the outer box 20 is demonstrated. FIG. 2 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. 2, portions corresponding to the bottom portion 21 of the outer box 20 and the plates 22, 23, 24, 25, 27 and the like are assigned to the blank plate 20 </ b> A. Each part of the blank plate 20A is connected via a ruled line. In the blank plate 20A shown in FIG. 2, 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. 2, 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. 2, the blank plate 20A includes a front plate 22, a rear plate 23 and a pair of lateral plates 24, 25, a bottom plate 21a connected to the front plate 22 via a bottom edge 31a, and a bottom edge 31b. A bottom plate 21b connected to the rear plate 23 via the top plate 27 and a top plate 27 connected to the front plate 22 via the top edge 30a. Among these, the bottom plates 21 a and 21 b are portions for constituting the bottom portion 21 of the outer box 20. For example, the bottom 21 of the outer box 20 is configured by joining the bottom plates 21a and 21b to each other. 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) and b (3) are attached.

  As shown in FIG. 2, the bottom portion 21 further includes a flap 21c connected to the horizontal plate 24 via the bottom edge 31c, and a flap 21d connected to the horizontal plate 25 via the bottom edge 31d. May be. In this case, the bottom plate 21a and 21b may not be joined to each other, but the bottom 21 may be configured by joining the flaps 21c and 21d to the bottom plate 21a and / or the bottom plate 21b.

  As shown in FIG. 2, a joining piece 34 is connected to the horizontal plate 24 via a side edge 33. This joining piece 34 is joined to the rear surface plate 23 as shown by the symbol b (2). The joining piece 34 may be connected to the rear plate 23. In this case, the joining piece 34 is joined to the lateral plate 24.

  As shown in FIG. 2, the front plate 22, the rear plate 23, the pair of lateral plates 24 and 25, and the joining piece 34 are each arranged in one direction on the blank plate 20 </ b> A. For example, the plates 22, 23, 24, 25 and the joining piece 34 are connected via the side edges of the plates 22, 23, 24, 25. Specifically, the joining piece 34, the lateral plate 24, the front plate 22, the lateral plate 25, and the rear plate 23 are connected in order from the left side in FIG.

  Incidentally, the blank plate 20A is generally obtained by cutting or punching the material plate 50 into a predetermined shape as shown in FIG. In this case, in order to obtain a large number of blank plates 20A from one material plate 50, that is, in order to realize high handling convenience, the shape of the blank plate 20A is easy to arrange a plurality of blank plates 20A. It is preferable that For example, as shown in FIG. 3, it is preferable that the outline of the blank plate 20A is rectangular.

  Here, according to the present embodiment, as described above, the front plate 22, the rear plate 23, the pair of lateral plates 24 and 25, and the joining piece 34 are arranged in one direction on the blank plate 20A. Yes. Further, as described above, the top edges 30a and 30b of the front plate 22 and the rear plate 23 are longer than the bottom edges 31a and 31b. Further, the pair of side edges 22 and 23 of each lateral plate 24 and 25 intersect each other at an acute angle at the upper end 30. As a result, the shape of the outline of the blank plate 20A can be made a shape close to a rectangle. For example, a rectangle 20A ′ circumscribing the blank plate 20A is drawn by a two-dot chain line in FIG. At this time, according to the present embodiment, the blank plate 20A of the rectangle 20A ′ is compared with the case where the front plate 22, the rear plate 23, the pair of horizontal plates 24 and 25, and the joining piece 34 are not arranged in one direction. The ratio of the portion occupied by can be increased. Thus, a large number of blank plates 20A can be obtained from one material plate 50. That is, high convenience can be achieved.

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 in one of the lateral plates 24 and 25 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 lateral plates 24, 25 of the outer box 20, that is, at the side edges of the front surface 40a and the back surface 40b of the inner bag 40. It only has to be done.

  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. Then, the method of closing again the opening part of the opened composite container 10 is demonstrated.

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 lateral plate 24 with the joining piece 34 connected to the front plate 22 and the lateral plate 25 with the rear plate 23 connected to the front plate 22 at the side edges 32a. Bend it. At this time, after the bottom plates 21a and 21b and the flaps 21c and 21d are bent at the bottom edges 31a, 31b, 31c and 31d, the flaps 21c and 21d are sandwiched between the bottom plates 21a and 21b, and the bottom plates 21a and 21b are sandwiched. It may be glued.

  After that, as shown in FIG. 6B, the inner bag 40 filled with the contents is inserted into the space surrounded by the front plate 22 and the pair of lateral plates 24 and 25. 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 process 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 front plate 22 and the pair of lateral plates 24, 25. It 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 rear plate 23 is bent at the side edge 33 a with respect to the horizontal plate 25, and the joining piece 34 is bent at the side edge 33 a with respect to the horizontal plate 24, and then the rear plate 23. 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 20A is prepared first, and then the positions of the four side plates 22, 23, 24, 25 are fixed. 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. As described above, the top edges 30a and 30b of the front plate 22 and the rear plate 23 are longer than the bottom edges 31a and 31b. For this reason, compared with the case where the top edges 30a and 30b and the bottom edges 31a and 31b have the same length, it is easy for a consumer to hold | grip the part of the outer casing 20 by the side of the bottom part 21 rather than the cutting part 26. There is expected.

  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.

  At the stage shown in FIG. 8A, the front plate 22 and the rear plate 23 are preferably gripped so that the ruled lines 24a and 25a of the pair of horizontal plates 24 and 25 are in a mountain fold state. As a result, the space between the front plate 22 and the rear plate 23 can be made narrower, whereby the inner bag 40 can be gripped more firmly. Therefore, simultaneous opening of the outer box 20 and the inner bag 40 can be realized more reliably.

Method for Closing Composite Container Also, the opening at the upper end of the main body 36 can be closed using the lid 37 separated from the main body 36. Thereby, compared with the case where the upper end of the main-body part 36 is an open state, it can suppress that the contents in the inner bag 40 deteriorate by moisture etc. Moreover, it is possible to prevent dust in the air from entering the inner bag 40.

When the upper end of the main body portion 36 is closed using the lid portion 37, preferably, as shown in FIG. 9A, first, at least a portion of the horizontal surface plate 24 of the main body portion 36 on which the lid portion 37 is covered, The ruled lines 24a and 25a are pushed inward so that the 25 ruled lines 24a and 25a are in a valley folded state. On the other hand, the ruled lines 24a and 25a of the lateral plates 24 and 25 of the lid part 37 are left in a mountain-folded state. As described above, by properly using the mountain fold state and the valley fold state in the main body portion 36 and the lid portion 37, the width w ₂ ′ of the main body portion 36 is reduced as shown in FIG. The width w ₂ ″ can be made smaller. As a result, as shown in FIG. 9B, the operation of covering the lid portion 37 on the main body portion 36 can be facilitated. Further, the lid portion 37 is covered. It can suppress that the main-body part 36 deform | transforms resulting from that.

  Further, according to the present embodiment, as described above, the distance between the pair of side edges 32 of the front plate 22 and the distance between the pair of side edges 33 of the rear plate 23 are at least the cutting portion 26. In the formed part, it becomes large as it leaves | separates from the bottom part 21. FIG. In this case, as the upper end of the main body portion 36 is inserted into the lid portion 37, the difference between the width of the upper end of the main body portion 36 and the width of the lid portion 37 around the upper end of the main body portion 36 increases. For this reason, the operation | work which covers the cover part 37 on the main-body part 36 can be made still easier.

  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 In the blank plate 20A according to this embodiment described above, an example is shown in which the portions for forming the side plates 22, 23, 24, 25 of the outer box 20 are partitioned as continuous portions. It was. However, it is not restricted to this, The part for comprising one side plate of the outer case 20 may be divided by the blank board 20A in the state divided | segmented into two or more parts. For example, as shown in FIG. 10, the portion that becomes 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. When the blank plate 20A is configured as shown in FIG. 10, the longitudinal direction of the rectangle 20A ′ circumscribing the blank plate 20A and the longitudinal direction of the joining piece 34 can be made parallel. For this reason, when the flow direction in the production process is parallel to the longitudinal direction of the rectangle 20A ′, an adhesive such as glue is applied to the joining piece 34 of the conveyed blank plate 20A using a roller. The application | coating operation | work can be facilitated. Further, the front plate 22 and the rear plate 23 have a trapezoidal shape, the lateral plates 24 and 25 have a triangular shape, and the rear plate 23 has the first rear plate 23 (1) and the first plate as described above. By dividing into two rear plates 23 (2), the ratio of the portion occupied by the blank plate 20A in the rectangle 20A ′ is higher than when the rear plate 23 is not divided as shown in FIG. can do. As a result, higher convenience can be achieved. In the modification shown below, even if the back plate 23 is divided into two parts in the blank plate 20A, the same reference numeral 23 is used for the two parts.

In the outer box 20 according to the above-described embodiment, the distance between the front plate 22 and the rear plate 23 decreases as the distance from the bottom 21 increases. It was. However, the specific configuration is not particularly limited as long as the cut portion 26 is formed in a portion where the distance between the front plate 22 and the rear plate 23 decreases as the distance from the bottom portion 21 increases. For example, in the example shown in FIG. 11, the side edges 32 and 33 of the pair of lateral plates 24 and 25 are connected to the first side 32 a and 33 a that intersect at an acute angle at the upper end 30 of the outer box 20, and the bottom portion 21. 21 and second side edges 32 b and 33 b extending perpendicularly to 21. In this case, in the portions corresponding to the second side edges 32 b and 33 b, the distance between the front plate 22 and the rear plate 23 is constant regardless of the distance from the bottom portion 21. On the other hand, in the portions corresponding to the first side edges 32 a and 33 a, the distance between the front plate 22 and the rear plate 23 decreases as the distance from the bottom portion 21 increases. Therefore, a portion where the distance between the front plate 22 and the rear plate 23 decreases as the distance from the bottom 21 reaches the upper end 30 of the outer box 20. The cut portion 26 is formed at a portion where the distance between the front plate 22 and the rear plate 23 decreases as the distance from the bottom 21 increases. That is, the cut portion 26 is formed so as to intersect with the first side edges 32a and 33a. In this case, the front plate 22 in the portion where the cut portion 26 is formed by appropriately adjusting the length of the first side sides 32a and 33a and the angle formed between the first side sides 32a and 33a. And the rear plate 23 can be made sufficiently small, whereby simultaneous opening of the outer box 20 and the inner bag 40 can be realized.

  Preferably, the cut portion 26 is formed at a location above two-thirds of the outer box 20 in the height direction. Thereby, the filling rate of the contents in the inner bag 40 can be improved.

Preferably, the portion where the distance between the front plate 22 and the rear plate 23 decreases as the distance from the bottom 21 occupies more than half of the front plate 22 and the rear plate 23 in the vertical direction. For example, as shown in FIG. 11, the distance in the height direction from the upper end 30 of the outer box 20 to the cutting portion 26 and h _1, to the first side edge 32a in the height direction, the extending range of 33a and h ₂ when, _{h 2} has a two-fold or more of _{h 1.} As a result, the simultaneous opening of the outer box 20 and the inner bag 40 is more easily realized.

  Preferably, the length of the pair of first side edges 32a, 33a of the lateral plates 24, 25 is the same. As a result, the symmetry of the shape of the outer box 20 can be increased, and this allows the consumer to more easily grasp the front plate 22 and the rear plate 23 when opening.

  Further, according to the present modification, the side edges 32 and 33 of the lateral plates 24 and 25 include the first side 32 a and 33 a and the second side 32 b and 33 b described above, so that the front plate 22 and the rear plate 23. Each of the side edges 32 and 33 has a shape that protrudes toward the inside of the outer box 20 at least partially. In this case, the portion of the side edges 32, 33 that protrudes inward can abut against the inner bag 40 accommodated in the outer box 20, and thereby, the inner box 40 in the outer box 20. The bag 40 can be held more stably. In addition, the “part protruding toward the inside” is a part located inside the line connecting the upper end 30 and the bottom part 21 of the outer box 20. For example, as shown for one side edge 32 of the front plate 22 in FIG. 11, it is a portion of the side edge 32 that is located on the inner side of the line 32 ′. Here, the line 32 ′ is a virtual line obtained by connecting a point of the upper end 30 that intersects the side edge 32 and a point of the bottom 21 that intersects the side edge 32.

  FIG. 12 is a plan view showing a blank plate 20A for producing the outer box 20 shown in FIG. As shown in FIG. 12, in the present modification, the lateral plates 24 and 25 are configured as pentagons including first side edges 32a and 33a, second side edges 32b and 33b, and bottom edges 21c and 21d, respectively. The front plate 22 and the rear plate 23 are each configured as a portion having a shape obtained by combining a trapezoid and a rectangle.

  Note that the configuration for projecting the side edges 32 and 33 of the front plate 22 and the rear plate 23 at least partially inward is not limited to the configuration shown in FIGS. 11 and 12. For example, the second side edges 32 b and 33 b may not extend perpendicularly to the bottom portion 21. Further, the second side edges 32b and 33b may be composed of a plurality of side edges. For example, each side edge of the side edges 32 and 33 may be configured so that the shape of the lateral plates 24 and 25 in the blank plate 20A is a heptagon or other polygons.

  Further, as shown in FIG. 13, ruled lines 22 a and 23 a extending from the cut portion 26 toward the bottom portion 21 may be formed on the front plate 22 and the rear plate 23 of the outer box 20. In this case, when the pair of horizontal plates 24 and 25 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 22a and 23a. 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.

  Further, in the outer box 20 according to the above-described embodiment, the example is shown in which the ruled lines 24 a and 25 a formed on the respective lateral plates 24 and 25 extend from the upper end 30 to the bottom 21 of the outer box 20. However, the ruled lines 24a and 25a can be variously designed as long as the mountain-folded state or the valley-folded state of the lateral plates 24 and 25 in the portion where the cut portion 26 is formed. For example, as shown in FIG. 14, the ruled lines 24 a and 25 a may extend from the upper end 30 toward the bottom 21 so as not to reach the bottom 21.

  As shown in FIG. 15, the cut portion 26 of the outer box 20 may further include a cutout portion 26 h formed in the lateral plate 24, 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.

  Moreover, as shown in FIG. 17, the insertion piece 22i may be formed in any one of the front plate 22 or the rear surface plate 23, and the receiving part 23r in which the insertion piece 22i is inserted may be formed in 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. 17, 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.

  Further, in the outer box 20 according to the above-described embodiment, an example in which the bottom plates 21a and 21b and the flaps 21c and 21d constituting the bottom portion 21 are fixed to each other by bonding is shown. However, the present invention is not limited to this, and the bottom plates 21a and 21b and the flaps 21c and 21d can be fixed to each other by various methods. For example, as in the case of the insertion piece 22i and the receiving portion 23r described above, the bottom plate 21a, 21b and the flaps 21c, 21d are fixed by forming the pair of insertion pieces and the receiving portion on the bottom plate and the flap. Also good. 18 and 19, each flap 21c, 21d has a shape capable of functioning as an insertion piece 21i, and a receiving portion 21r into which each flap 21c, 21d is inserted into the bottom plate 21a. An example of forming is shown. FIG. 20 shows an example in which insertion pieces 21i are formed on the flaps 21c and 21d, and receiving portions 21r into which the insertion pieces 21i of the flaps 21c and 21d are inserted are formed on the bottom plate 21a. .

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. 21, the inner bag 40 is configured as a four-side sealed bag including thermal bonding portions 42a, 42b, 42d, and 42e 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. 22, the inner bag 40 may be comprised as a three-sided seal bag containing the heat bonding part 42a, 42d, 42e extended along the upper edge and a pair of side edge of the inner bag 40. As shown in FIG. In the example shown in FIGS. 21 and 22, the easy-opening portion 43 may be configured as a notch formed in at least one of the pair of side thermal bonding portions 42 d and 42 e.

Other Modifications According to this embodiment, as described above, the outer box 20 and the inner bag 40 can be opened simultaneously without fixing the opening portion of the outer box 20 and the inner bag 40 using an adhesive or the like. Can be realized. However, in the present embodiment, 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 lateral plates 24 and 25 of the main body portion 36 are pushed inward to open the upper end opening portion of the main body portion 36, the upper end opening portion of the inner bag 40 follows this. Can spread.

  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.

DESCRIPTION OF SYMBOLS 10 Composite container 20 Outer box 20A Blank plate 21 Bottom 22 Front plate 23 Rear plate 24, 25 Horizontal plate 26 Cutting part 27 Top plate 30 Upper end 32, 33 Side edge 34 Joining piece 36 Main part 37 Cover part 40 Inner bag 41 Packaging material 42 Thermal bonding part 43 Easy opening part

Claims (11)

A composite container comprising an outer box and an inner bag accommodated in the outer box,
The outer box has a bottom portion and a plurality of side plates connected to the bottom portion,
The plurality of side plates include a front plate and a rear plate facing each other, and a pair of lateral plates connected to the front plate and the rear plate,
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 decreases, and a series of cut portions crossing the front plate, the rear plate, and the pair of lateral plates are provided. 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,
In the inner bag, an easy-open portion is formed at least at a position corresponding to the cut portion of the outer box and facing one of the pair of lateral plates of the outer box. and,
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 . 2. The composite container according to claim 1 , wherein a ruled line extending from an upper end of the outer box toward the bottom is formed on each lateral plate of the outer box so as to intersect the cut portion. A composite container comprising an outer box and an inner bag accommodated in the outer box,
The outer box has a bottom portion and a plurality of side plates connected to the bottom portion,
The plurality of side plates include a front plate and a rear plate facing each other, and a pair of lateral plates connected to the front plate and the rear plate,
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 decreases, and a series of cut portions crossing the front plate, the rear plate, and the pair of lateral plates are provided. Formed,
Each lateral plate of the outer box is formed with a ruled line extending from the upper end of the outer box toward the bottom so as to intersect the cut portion,
In the inner bag, an easy-open portion is formed at least at a position corresponding to the cut portion of the outer box and facing one of the pair of lateral plates of the outer box. A composite container. Becomes smaller portions as distance away from the bottom portion between the rear face plate and the front plate of the outer box, leading to the upper end of the outer box, the composite according to any one of claims 1 to 3 container. The front plate and the rear plate of the outer box each include a bottom edge in contact with the bottom portion, and a top edge facing the bottom edge,
The composite container according to any one of claims 1 to 4 , wherein the top edge is longer than the bottom edge. The front plate and the rear plate of the outer box each have a pair of side edges in contact with the pair of lateral plates,
6. The composite container according to claim 5 , wherein a distance between the pair of side edges of the front plate and the rear plate increases as the distance from the bottom portion increases at least in a portion where the cut portion is formed. The composite container according to claim 6 , wherein each of the pair of side edges of the front plate and the rear plate is a side extending from the upper end of the outer box to the bottom. The composite container according to claim 6 , wherein each of the pair of side edges of the front plate and the rear plate is configured to protrude at least partially inward. Each lateral plate of the outer box has a pair of side edges in contact with the front plate and the rear plate,
The composite container according to any one of claims 1 to 8 , wherein the pair of side edges of each lateral plate cross each other at an acute angle at an upper end of the outer box. A paper container,
A bottom portion, and a plurality of side plates connected to the bottom portion,
The plurality of side plates include a front plate and a rear plate facing each other, and a pair of lateral plates disposed between the front plate and the rear plate and facing each other,
The spacing between the front plate and the rear plate is at least partially reduced with distance from the bottom,
A portion of the container in which a distance between the front plate and the rear plate decreases as the distance from the bottom portion decreases, a series of cut portions that cross the front plate, the rear plate, and the pair of lateral plates are formed. Has been
A ruled line extending from the upper end of the container toward the bottom so as to intersect the cut portion is formed on the lateral plate,
The front plate and the rear plate each include a bottom edge in contact with the bottom, and a top edge facing the bottom edge,
The top edge is longer than the bottom edge. A blank plate for producing the container according to claim 10 ,
The front plate, the rear plate, and the pair of lateral plates of the container are each a blank plate that is arranged in one direction on the blank plate.

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