JP5519850B1 - Blank material for box and box assembly - Google Patents

Abstract

[PROBLEMS] To provide a blank material capable of assembling a box with improved performance for protecting the contents and excellent in handleability, and a box assembled from the blank material.
When blank materials 1a and 1b are assembled in a box, a folded portion 12 that has a strong inner lid and is folded inside the box when the box is assembled is positioned at a position along side walls 5 and 7. It is a structure that will be in the state. Such a box is excellent in handleability, such as being able to effectively utilize the space in the box, such as being able to minimize damage to the items contained in the box, and being able to be stacked with a high degree of integration.
[Selection] Figure 1

Description

  The present invention relates to a box and a blank material for assembling the box.

  Various blanks are known for assembling a box made of sheet-like material such as paperboard and a box in which this is assembled.

  For example, there is a box as shown in FIG. 18A (see Patent Document 1). In this box, the folding portions a1 at the four corners of one sheet of paper sheet material are folded symmetrically to the outside of the side wall portion a2, and the locking portion a3 connected to the side wall portion a2 is connected to the side wall portion a2. It is assembled by inserting between the folding parts a1.

  And there exists a container as shown in FIG.18 (B) (refer patent document 2). In this container, the folded portions b1 are overlapped, and these are fixed by a locking member b2, thereby improving shape retention.

  Furthermore, there is a container shown in FIG. 18C (see Patent Document 3). According to the explanation, this container can be used for microwave cooking of food, and in order to avoid the use of an adhesive, a mask region c1 is provided on one of the folding parts, and the other folding part is provided. A notch c2 is provided, and the mask region is fixed to the inner surface of the other folded portion by a heat seal.

  Moreover, there exists a container shown by FIG.18 (D) (refer patent document 4). In this container, the folded part d4 is formed by folding the four corner bent parts d1 to the outside and bonded to the side wall, and then the extended surface d5 of the side wall f2 is folded outward to fold the handle part d6 or the handle notch piece d7. It is configured to be sandwiched and fixed in the part d4. Also, after heating the food, the top surface d8 is opened to make a tapered container, or the adhesive part of the folded part d4 folded outside is released and fully opened, then the folded part d1 at the four corners is folded back and bent, and the box The structure which makes this plate shape is disclosed.

  Further, as shown in FIGS. 19 and 20, when assembled into a box, the four-corner folded wall portion e6 and the four-corner folded wall portion located between the first side wall portion e3 and the second side wall portion e5. There is a box having a structure in which e7 is folded inside the box (see Patent Document 5).

Japanese Utility Model Publication No. 52-67535 Japanese Utility Model Publication No. 60-89120 JP 2000-238748 A JP 2008-68885 A Japanese Patent No. 4929482

  By the way, the container shown to FIG. 18 (A) does not have the part which comprises a ceiling. Therefore, in order to protect the upper part of the thing accommodated in the container, it is necessary to prepare a lid separately.

  Further, in all of the containers shown in FIGS. 18B, 18C, and 18D, the folded portion when the box is assembled appears on the outside of the side plate of the box and is caught when the box is handled. Easy and bulky when stacking boxes side by side.

  Furthermore, the box shown in FIG. 19 has a structure in which, when assembled, the four corner folding intrusion-preventing wall portion e6 and the four corner folding wall portion e7 are folded into the inside of the box. A protruding end e1d (see FIG. 20) on the tip side from the notch e1b and the hole retaining portion e1c protrudes in the lateral direction of the box. When the boxes are stacked efficiently, the boxes are usually laid down and then stacked on each box. In the case of the box in FIG. 20, the protruding portion e1d of the handle portion e1 protruding in the lateral direction of the box. Since it is in the way, it is difficult to lay down the boxes and put the boxes without any gaps.

  The present invention has been made in view of such problems. From the blank material and the blank material capable of assembling a box with improved performance for protecting the contents and excellent handleability. It is an object to provide an assembled box.

  The invention according to the present application includes a rectangular box bottom surrounded by a first bottom fold line facing each other and a second bottom fold line facing each other, and a pair of boxes connected to the box bottom via each first bottom fold line. A first side wall part, a pair of second side wall parts connected to the box bottom part via each second bottom fold line, a folding part located between the side wall parts, and outside each first side wall part, Inside the pair of inner lids connected via the first wall upper fold line, outside the respective inner lids, outside the pair of inner lids connected via the inner lid fold line, and outside the respective second side wall portions, Two wall upper fold lines are connected to each other, and a pair of outer lid portions disposed outside the inner lid outside the inner lid in the assembled state of the box and a pair of closing portions continuing to the outer sides of the outer lid portions are provided. Each folding part extends outward from the corner of the box bottom and folds the folding part into two and folds the folding part. A first folding part that is on the side of the first side wall with respect to the line and is folded into the box at the time of assembling the box; A second folding part, a third wall upper fold line extending from an end of the first wall upper fold line along an extension line of the fold line, and the first wall upper fold line via the first wall upper fold line. An inner lid component that continues to the outside of the folding portion, and the outer side of the inner lid can be folded back to a position sandwiching the inner lid component by cooperation with the inner lid when assembling the box, Each closing part is a blank material for assembling a box, which can be engaged with the other closing part or an outer lid part connected to the other closing part at the time of assembling the box.

  If it is the blank material of such a structure, when assembling a box, since other members are unnecessary and only the blank material concerning this invention should just be, it is excellent in handleability. In addition, if this blank material is assembled into a box, other member folding parts can be folded inside the box, so unlike the case where the folding part is folded so as to be located outside the box, a flat outer peripheral surface is formed. You can easily assemble the box you have. As described above, the clean outer shape box is excellent in handling properties, such as being able to place the box at a high density when the box is placed so as to be laid down. Moreover, in the blank material of the said structure, since the folding part folded in the box is positioned in the position along the inner surface of the box, the space in the box can be used effectively, and the members constituting the box and the contents in the box Contact with is minimized. The box having such a structure is suitable as a box for storing easily damaged items such as foods such as cakes.

The first folding part further includes an assembly fold line extending from an end of the first wall upper fold line so as to pass between the first side wall part and the third wall upper fold line, A first folding lower part surrounded by the folding line for assembly and the folding part folding line, and a first folding upper part located between the folding line for assembly and the upper folding line of the third wall, The inner lid constituent part is continuous with the first folding upper part.
When the assembly fold line is provided, the inner lid components can be stacked on the inside of the adjacent inner lid before the side wall of the box is raised by folding the folding portion at the position of the assembly fold line. This makes it possible to improve the box assembly workability.

In addition, a claw part is connected to the outside of each of the inner lids via a claw part fold line, and the claw part is arranged between the inside of the middle lid and the outside of the middle lid when the box is assembled. It can be inserted between the inner lid constituting portion and the inside of the inner lid with the portion sandwiched therebetween.
When each outer lid is folded and stacked on the inner lid component, if the claw is inserted between the inner lid and the inner lid component, the inner lid, the outer outer lid, and the inner lid component are configured. The inner lid is assembled. Thereby, the subsequent box assembly workability is further improved.

  The inner lid constituting portion extends in an extending direction perpendicular to the third wall upper fold line via the third wall upper fold line, and extends from an end of the first wall upper fold line. The inner lid is separated from the inside of the inner lid through a separating and cutting portion extending in a direction, and the inner lid constituting portion further includes a notch on a distal end side of a side edge adjacent to the separating and cutting portion. The part is narrow.

  Each of the closing portions includes a handle portion that is overlapped with each other when the box is assembled, a first cutting line for forming a through-hole portion inside the handle portion, and the first cutting line from the outer lid portion. A first tongue projecting to the side, and the blank material includes a handle part fold line when folding the handle parts stacked on each other with respect to the outer lid part, and the handle part fold line. A cut formed in a connecting portion between the first tongue portion and the outer lid portion in a state extending along the extension line, and the cut is not formed in the connecting portion, and the outer lid portion and the A communication portion that connects the first tongue portion, and the pair of closures are formed by engaging a notch adjacent to one first tongue portion with a communication portion adjacent to the other first tongue portion when the box is assembled. The pair of first tongue portions of the portion are engaged with each other.

  Each inner lid includes a second tongue formed so as to protrude from the first side wall to the outer side of the inner lid by forming a cutting line therein. The tongue portion includes a slit extending in a direction orthogonal to the first wall upper fold line, and each handle portion has a locking projection (notch) with which the slit is engaged when the box is assembled. Are provided at both end positions in the width direction of the handle portion.

  In addition, each closing portion includes a covering portion that is overlapped on the outside of the box of the other outer lid portion that is connected to the other closing portion when the box is assembled, and each covering portion is the other outer lid portion. A pair of projecting portions, each of which is provided with a projecting portion projecting toward the other covering portion side in the width direction in which the second wall upper fold line extends in a state where the second wall upper fold line extends. Can be engaged with each other.

  Further, it is preferable that an easy separation structure is formed at the position of the second wall upper fold line.

  Another invention according to the present application is a box in which a blank material as described above is assembled.

  The blank material for assembling the box according to the invention of the present application, when assembled, has a strong inner lid, and the folding portion that is folded inside the box when the box is assembled is positioned at a position along the side wall portion. It becomes a box. The box in such a state is excellent in handleability, such as being able to effectively utilize the space in the box, such as being able to suppress damage to the contents in the box to a minimum, and being able to be stacked with a high degree of integration.

It is an expanded view which shows 1st Example of the blank material which concerns on this invention. It is explanatory drawing which shows the state which opens and uses the box which assembled the blank material shown by FIG. It is an expanded view which shows 2nd Example of the blank material which concerns on this invention. It is explanatory drawing which shows the assembly procedure of the blank material shown by FIG. (A) to (F) are explanatory views showing a modified example of the assembled state of the blank shown in FIG. 3, and (G) and (H) are states during transportation of the blank shown in FIG. It is explanatory drawing which shows an example of a suitable folding state as. It is an expanded view which shows 3rd Example of the blank material which concerns on this invention. It is explanatory drawing which shows the assembly procedure of the blank material shown by FIG. It is explanatory drawing which shows the procedure which opens and uses the box which assembled the blank material shown by FIG. 6, and the used state. It is an expanded view which shows 4th Example of the blank material which concerns on this invention. It is explanatory drawing which shows the assembly procedure of the blank material shown by FIG. It is an expanded view which shows 5th Example of the blank material which concerns on this invention. It is explanatory drawing which shows the assembly procedure of the blank material shown by FIG. It is an expanded view which shows 6th Example of the blank material which concerns on this invention. It is an expanded view which shows 7th Example of the blank material which concerns on this invention. It is explanatory drawing which shows the assembly procedure of the blank material shown by FIG. It is an expanded view which shows 8th Example of the blank material which concerns on this invention. It is explanatory drawing which shows the assembly procedure of the blank material shown by FIG. (A)-(D) are perspective views which show the assembly state of the said box as an example of the conventional box, respectively. It is a perspective view which shows the unfolded state before the assembly of the said box as an example of the conventional box. It is a perspective view which shows the assembly state of the box of FIG.

1a: Blank material (developed paperboard for box assembly) of the first embodiment,
3 ... outside of the inner lid, 4 ... inside of the inner lid, 4x ... separation cutting part, 4y ... folding line of the inner lid,
5 ... 1st side wall part, 5x ... 1st side part fold line, 5y ... 1st wall upper part fold line,
6 ... Box bottom, 6x ... Second bottom fold line, 6y ... First bottom fold line,
7 ... 2nd side wall part, 7g ... perforation (separation easy structure, notch for separation),
7x ... second wall top fold line, 7y ... second side fold line,
8 ... outer lid, 8u ... boundary (boundary between outer lid 8 and closing part 9)
9 ... Closed part, 9u ... Incision (part), 9a ... One tongue piece, 9b ... The other tongue piece,
12 ... Folding part, 12a ... First folding part, 12b ... Second folding part, 12c ... Inner lid constituting part,
12u ... folding fold line, 12v ... third wall top fold line,
X: direction in which the first wall upper fold line 5y extends (extension direction), Y: direction orthogonal to X,

1b ... blank material of the second embodiment,
2 ... nail part, 2a ... nail base part, 2b ... toe part, 2y ... fold line for nail insertion, 3y ... fold line for nail part,
4x: separation cutting part, 8x: handle part fold line, 10 ... closing part, 10a ... handle part, 10b ... first tongue part,
10b1: base of the first tongue, 10b2: tip of the first tongue, 10c: communication portion, 10h: through hole (penetration portion),
10u ... first cutting line, 10v ... folding line for engagement, 10x ... cutting,
12a1 ... lower part of first fold, 12a2 ... upper part of first fold, 12c ... inner lid component,
12c1 ... Inner cover constituent base, 12c2 ... Inner cover constituent tip (tip), 12e ... Step part, 12f ... Notch,
12w ... folding line for assembly, 13a ... gap,

1c ... blank material of the third embodiment,
4a ... second tongue (engaging flap), 4s ... slit for engaging handle (slit),
4u… Inner lid internal cutting line (cutting line),
10d: protrusion (engagement protrusion), 10e: arc-shaped part, 10f: notch (notch part),

1d: blank material of the fourth embodiment,
9a ... one tongue piece (covering part), 9b ... the other tongue piece, 9c ... bulging part (protruding part),
9s ... inclined part, 9v ... notch, 9x ... tongue fold line, 13b ... gap, 20 ... claw part, 20a ... constricted part,
50 ... Slit, 50a ... Slit center, 50b ... Slit side,

1e ... blank material of the fifth embodiment, 21 ... claw part,

1f ... blank material of the sixth embodiment, 3w ... oblique portion, 4e ... step portion, 13c ... gap,

1g ... Blank material of the seventh embodiment,
8e ... intermediate step, 8f ... boundary step,
9c ... protrusion, 9d ... protrusion (engagement protrusion), 9e ... recess, 9s ... inclined part,
9w ... notch, 9w1 ... notch base, 9w2 ... notch body,
22 ... nail part, 22a ... nail part body, 22b ... constriction part, 22y ... folding line, 22s ... slit,

1h ... blank material of the eighth embodiment,
10k ... Through hole part, 12b1 ... Second folding lower part, 12b2 ... Second folding upper part,
12g ... Step part, 12h ... Claw part, 12k ... Inclined edge,
13b ... Gap, 23 ... Nail, 40 ... Slit, 51 ... Slit.

  As described above, a box assembly blank material (hereinafter, simply referred to as a blank material) according to the invention of the present application has a portion that becomes a strong inner lid when assembled, for example. The folded portion that is folded inside the box at the time of assembling the box is located at a position along the side wall. The box constructed by assembling the blank material having such a configuration can effectively utilize the space in the box, and the situation in which the contents in the box are damaged is suppressed to a minimum. .

Next, examples of the blank material according to the present invention will be described more specifically with reference to the drawings.
Of the reference numerals shown in each figure, the reference numerals indicating the inner lid side face part 3, the inner lid inner part 4, the side wall parts 5 and 7, the box bottom part 6 and the outer lid part 8, which will be described later, are the surfaces of the respective parts. (Inside or outside). Accordingly, in the drawing, the numbers 3, 4, 5, 6, 7, and 8 shown in these constituent parts are not patterns but are symbols indicating the respective parts. Moreover, in each figure, the outer surface of the blank material was shown in gray. In addition, the outer surface of the blank material is the surface that appears on the outside of the box when the blank material is assembled into the box, if it is about the box bottom 6 described later, and the inner surface is the inside of the assembled box. It is the surface that appears. For the parts other than the box bottom 6, the surface on the same side as the outer surface of the box bottom 6 is referred to as the outer surface, and the surface on the same side as the inner surface of the box bottom 6 is referred to as the inner surface.
Moreover, in the following description, regarding the folding operation when assembling the blank material into the box, the operation of bending the inner surfaces to face each other is referred to as inward folding (or inner folding), and the outer surfaces are folded to face each other. The operation may be referred to as outward folding (or outward folding).

  As shown in FIG. 1, the blank 1a of the first embodiment includes a rectangular box bottom portion 6, a pair of first side wall portions 5, 5, a pair of second side wall portions 7, 7, and a side wall portion 5. , 7 for convenience, four folding portions 12, a pair of inner lid inner portions 4, 4, a pair of inner lid outer portions 3, 3, a pair of outer lid portions 8, 8, and a pair of closing portions 9 And. In addition, since the raw material of a blank material is what is called cardboard generally used as the raw material of a box, the description is abbreviate | omitted here.

  The box bottom portion 6 is surrounded by first bottom fold lines 6y and 6y extending in the opposite Y direction and second bottom fold lines 6x and 6x extending in the opposite X direction. Since the X direction and the Y direction are orthogonal to each other, and the first bottom fold line 6y and the second bottom fold line 6x have the same length, the box bottom 6 is square. Each first side wall portion 5 is connected to the box bottom portion 6 via each first bottom fold line 6y. Each second side wall 7 is connected to the box bottom 6 via each second bottom fold line 6x. Each inner lid inside 4 is connected to the outside of the first side wall portion 5 via a first wall upper fold line 5y. Each inner lid outer part 3 is connected to the outer side of each inner lid inner part 4 via an inner lid folding line 4y. The inner lid outer part 3 can be folded back in a state of sandwiching a later-described inner lid constituent part 12c in cooperation with the inner lid inner part 4 when the box is assembled.

The width dimension in the X direction of each inner lid inside 4 is half the length of the second bottom folding line 6x (= the width dimension in the X direction of the box bottom 6). Further, the width dimension in the X direction of the inner lid outer part 3 coincides with the width dimension in the X direction of the inner lid inner part 4. With this size, the inner lid constituting part 12c described later can be sandwiched by cooperation with the inner lid inside 4 when the box is assembled.
The inner lid fold line 4y is a double fold line (see FIG. 1). The inner lid fold line 4y may be composed of a single fold line, but if it is a double fold line, as will be described later, the inner lid inner 4 and the inner lid outer 3 cooperate in assembling the box. When the inner lid constituting portion 12c is sandwiched by operation, the inner lid constituting portion can be firmly sandwiched between the inner lid inner portion 4 and the inner lid outer portion 3 as a whole, and the subsequent assembling work is easy. Also, after the assembly of the box was completed, the restoring force remaining in the box (the force that the inner lid outer part 3 bent to the inner lid inner part 4 tries to return to the original state) was minimized and assembled. It is easier to maintain the shape of the box close to a rectangular parallelepiped shape. As the interval between the double fold lines, for example, a dimension that matches the thickness dimension of the inner lid constituting portion 12c described later can be considered as in this embodiment.

Each folding part 12 exists in the position between the adjacent side wall parts 5 and 7, and is connected to the first side wall part 5 via the first side fold line 5x, and the second side fold line 7y is connected. Via the second side wall 7. The first side fold line 5x is located on the extended line of the second bottom fold line 6x, and is located at the end of the first side wall part 5 in the width direction (Y direction). The second side fold line 7y is located on the extended line of the first bottom fold line 6y, and is located at the end of the second side wall 7 in the width direction (X direction). The lengths of the first side fold line 5x and the second side fold line 7y are the same.
Each fold portion 12 extends outward from the corner of the bottom portion 6 and folds into a fold portion fold line 12u that bisects the fold portion 12, and the first fold portion 12a and the second fold portion adjacent to the fold portion fold line 12u. A portion 12b, a third wall upper fold line 12v extending in the Y direction from the end of the first wall upper fold line 5y along the extension line of the fold line 5y, and the third wall upper fold line 12v. And an inner lid constituting part 12c connected to the outside in the X direction of the first folding part 12a.
If the first folding part 12a and the second folding part 12b are present outside the box in the assembled state as a box, when the boxes are stacked and stacked in a warehouse or a container, these folding parts interfere with each other. There is a gap between them, but if the folded part is folded into the box, the folded parts 12a and 12b do not get in the way when the assembled boxes are stacked side by side, and the boxes are loaded with a high degree of integration. be able to.

The folding part folding line 12u extends in a direction that bisects the folding part 12 into the first side wall part side and the second side wall part side. More specifically, the extending direction of the folding part folding line 12u is a direction that bisects the angle formed by the first side folding line 5x and the second side folding line 7y that are orthogonal to each other. That is, the angle formed between the folding part folding line 12u and the first side folding line 5x or the second side folding line 7y is 45 degrees.
The first folding part 12a is closer to the first side wall part 5 than the folding part folding line 12u. More specifically, the folding part folding line 12u, the third wall upper folding line 12v, and the first side folding line 5x. It is a part existing in the range surrounded by.
The second folding part 12b is closer to the second side wall part 7 than the folding part folding line 12u, and more specifically, the folding part folding line 12u, the second side folding line 7y, and the second wall upper folding described later. It is a region existing in a range surrounded by an extension line of the line 7x.
As described above, the inner lid constituting portion 12c is sandwiched between the inner lid inner portion 4 and the inner lid outer portion 3 when the box is assembled. Further, the inner lid constituting portion 12c is a portion extending in the X direction from the first folding portion 12a and is adjacent to the inner lid inside 4. Further, the inner lid constituting portion 12c is connected to the inner lid inner portion 4 via a separation cutting portion 4x extending in the extending direction X from an end portion of the first wall upper fold line 5y (contact point between the fold line 5y and the fold line 12v). It is separated.
Note that the width dimension in the Y direction of the inner lid constituting portion 12c and the length dimension of the third wall upper folding line 12v are shorter than the height dimension in the X direction of the inner lid inner portion 4 (in other words, narrower). . Further, the length in the extending direction X from the third wall upper fold line 12v of the inner lid constituting portion 12c of this embodiment (hereinafter simply referred to as the length of the inner lid constituting portion) is the first wall upper fold line. It is shorter than half of the length of 5y (= the width dimension in the X direction inside the inner lid) (for example, 40% of the length of the folding line 5y).

Each outer lid portion 8 is connected to the outer side of the second side wall portion 7 via the second wall upper fold line 7x, and is superposed on the outer side of the inner lid outer portion 3 when the box is assembled. In other words, the pair of outer lid portions (a part of the box outer structure) 8 is in a state that can be opened in a double-fold manner with respect to the upper end opening of the box after assembly, It can be opened and closed at an open position spaced apart from the inner lid exterior 3.
Each closing portion 9 is connected to the outside of each outer lid portion 8 and is engaged with the other closing portion 9 when the box is assembled. By this engagement, the closed state of the box is maintained.
The width dimension in the Y direction of each outer lid portion 8 is half of the length dimension of the first bottom fold line 6y in this embodiment. That is, each closing portion 9 has a boundary position (AA in FIG. 1) that reaches the position half the length of the first bottom folding line 6y from the position of the second wall top folding line 7x toward the outside in the Y direction. It is the part outside the line position. A boundary line (a boundary line between the outer lid portion 8 and the closing portion 9) 8u extending in the X direction is located at this boundary position (see FIG. 1).
Each closing portion 9 includes a notch 9u formed in a central portion in the width direction (X direction) of the closing portion 9, and two tongue pieces 9a and 9b divided through the notch 9u.
The notch 9u is formed as an engaging portion that maintains the lid closed state, and extends linearly in the Y direction from the outer edge of the closing portion 9 toward the box bottom 6 side.
Each tongue piece 9a, 9b is connected to the outer lid part 8 via a boundary line 8u. Both tongue pieces 9a and 9b have the same dimension in the Y direction. Further, the notches 9u of the pair of closing portions 9 are engaged with each other when the box is assembled. When the closing portions 9 are engaged with each other, the lid closed state of the box is maintained.
A fold line extending in the X direction may be formed at the position of the boundary line 8u. In this case, the folding line can be formed only at the boundary position between one of the tongue pieces 9a and 9b and the outer lid part 8, or at the boundary position between the both tongue pieces 9a and 9b and the outer lid part 8.
The blank 1a has a line-symmetric shape with respect to a center line in the Y direction (and a center line in the X direction) passing through the center of the box bottom 6. The blank 1a has a point-symmetric shape with respect to the center point of the box bottom 6 (in the present embodiment, the intersection of diagonal lines of the rectangular box bottom 6).

In addition, a structure (separation facilitating structure) that allows the outer lid portion 8 to be separated from the second side wall portion 7 is formed at the position of the second wall upper fold line 7x.
Specifically, it is a separation notch formed along the second wall upper fold line 7x. More specifically, the separation notch is formed at the perforation structure 7g formed along the second wall upper fold line 7x or the end of the perforation 7g (and the side edge of the outer lid). It is the end cut formed. If these structures are provided, the outer lid portion 8 can be easily separated from the second side wall portion 7 along the second wall upper fold line 7x by using these structures.
The separation notches and the perforations 7g are preferably formed along the second wall upper fold line 7x. In this example, the cuts and perforations 7g were formed at positions away from the second wall upper fold line 7x (see FIG. 1). In this way, when the notch or the like is formed at a position deviated from the folding line, for example, even if the blank material is a thick paperboard such as corrugated paper, it is easier to fold in a folded state that conforms to the paper thickness. Further, if the cuts, perforations 7g, etc. are formed at positions deviated from the fold line, the bending angle at the fold line can be relaxed, and the strength reduction at the fold line can be suppressed.
On the other hand, cuts and perforations 7g may be formed on the second wall upper fold line 7x. With such a configuration, the folding operation at the folding line is easier.
Therefore, in the case of a box that accommodates a relatively heavy object, the notch and the perforation 7g are formed by shifting from the position of the fold line. It is conceivable to form it on a fold line.

  Next, a procedure for assembling the blank 1a having such a configuration into a box will be described.

  The procedure described here is an example of an assembly procedure. If the shape and structure of the assembled box are the same, the procedure for assembling the box is not limited to the procedure described below. This also applies to the embodiments described below.

First, the pair of first side wall portions 5 and 5 (see FIG. 1) and the pair of second side wall portions 7 and 7 are folded inward to stand up with respect to the box bottom portion 6 (side wall standing step).
At this time, the folding part folding lines 12u of the four folding parts 12 between the side wall parts 5 and 7 are folded inside the box. In other words, the first folding part 12 a of the folding part 12 is folded inward with respect to the first side wall part 5, and the second folding part 12 b is folded inward with respect to the second side wall part 7. That is, the four side wall portions 5 and 7 are raised while the first folding portion 12a and the second folding portion 12b of each folding portion 12 are folded into the box. Then, the first side fold line 5x and the second side fold line 7y are brought into contact with each other. As a result, the blank 1a is surrounded by the box bottom and the four side walls, and has a rectangular parallelepiped space in the box with the ceiling opened.

Next, the inner space of the box having the opening opened upward is covered with the inner lid from above (inner lid process).
Specifically, first, the pair of inner lid interiors 4 and 4 are folded so as to be folded inward at the position of the first wall upper fold line 5y, and the pair of inner lid interiors 4 and 4 cover the upper space in the box. To do.
Next, each inner lid constituting portion 12c is bent so as to overlap the adjacent inner lid inner portion 4.
Next, each inner lid outer part 3 is folded so as to be superimposed on the inner lid constituent parts 12c, 12c folded on the inner lid inner part 4. As a result, the upper part of the inner space of the box is covered by the inner lid with the inner lid constituting parts 12c and 12c sandwiched between the inner lid inner part 4 constituting the inner surface of the inner lid and the inner lid outer part 3 constituting the outer surface of the inner lid. It will be in the state. In this state, the first folding part 12a connected to the inner lid constituting part 12c is positioned so as to be oriented along the second side wall part. Thereby, a rectangular parallelepiped box space is secured. In addition, when accommodating a thing in a box, after starting the assembly of a box, it is preferable to accommodate before the outer cover part bending process performed next.

Next, the outer lid portion 8 is bent so as to overlap the outer portion 3 of the inner lid (outer lid process).
As a result, the space inside the box is covered by the outer lid portion 8 from above. At this time, the pair of closing portions 9 and 9 are bent so as to overlap the pair of outer lid portions 8 and 8, but the vertical relationship between the two closing portions 9 and 9 does not matter.

Further, when the outer lid portion 8 is bent so as to overlap the outer portion of the inner lid 3, the engaging cut portions 9u of the two closing portions 9 are engaged with each other (box closing step).
As a result, the lid closed state is maintained, and the assembly of the box is completed.

In the blank material 1a of the present embodiment, the positions of the first folding part 12a and the second folding part 12b folded inside the box can be surely positioned in the direction along the second side wall part 7, so that the box was assembled. When this is done, a rectangular parallelepiped space in the box is ensured.
Further, the box can be fixed in a closed state by only engaging one engaging portion (the engaging cut portions 9u of the pair of closing portions 9) located at the center of the box. Excellent assembly workability.

Next, an example of use in which the assembled box is opened will be described.
Since the procedure for opening the box is basically the reverse procedure of the assembly procedure described above, detailed description thereof is omitted here.

In the case of the box made of the blank material 1a of the present embodiment, the outer lid portion 8 can be separated from the second side wall portion 7 after releasing the engagement between the cut portions 9u for engagement of the closing portion 9 and opening the box. Yes (see FIG. 2). The blank 1a in this state has a dish shape and is suitable for use as a dish container. Then, by simply opening the box and cutting off the outer lid portion 8, the contents in the box are placed on a dish-shaped vessel. Therefore, in the case where the contents in the box are foods such as cakes, if the box is opened and the outer lid part 8 is cut off, the cakes can be cut using a knife or the like without moving the cakes. Also, if the contents in the box do not need to be separated, such as short cakes, just open the box and detach the outer lid 8 and immediately remove the food such as short cakes on the plate. You can start eating.
Further, when the box is opened, the portion that was the side surface of the box constitutes a part of the dish-shaped portion, so that the area of the dish portion is substantially increased. That is, a larger dish-like container is obtained. For example, as a container for packaging a hamburger or the like, there is a combination of a lower box on which a hamburger is placed and an upper box that covers the hamburger from above. Such a packaging container in which upper and lower boxes are combined can be said to be for packaging a hamburger before starting to eat, and when it actually starts to eat, it has finished its role as a box. In short, such a box is simply a box for packaging purposes. In this respect, the packaging box of the present embodiment can be used not only as a box but also as a dish after starting to eat, and as described above, the dish part has a large area. As a result, the table can be prevented from being soiled, and other rugs such as other dishes and wrapping paper are not required. In this way, if there is no need for other packaging, it is possible to reduce waste and contribute to energy saving, which is advantageous in promoting ecology.

Next, the blank 1b of the second embodiment will be described with reference to FIG.
This blank material 1b has the same configuration as the blank material 1a of the first embodiment. Therefore, here, the configuration different from the blank material 1a of the first embodiment will be described, and the same reference numerals are used for the configurations common to the first embodiment, and the detailed description thereof may be omitted.

  The blank material 1b differs in the structure of the folding part 12 compared with the blank material 1a of 1st Example. And compared with the blank material 1a of Example 1, the blank material 1b differs in a box external structure. More specifically, the box external structure of the blank 1b includes a pair of openable and closable outer lid portions 8 and a closing portion 10 connected to the outside of each outer lid portion 8, which will be described later. Is provided with a handle structure. Further, the blank material 1b of the present embodiment includes a claw portion 2 that is not included in the blank material 1a of the first embodiment.

In this embodiment, an assembly folding line 12w is formed in the folding portion 12.
The assembly fold line 12w is formed at a position passing from the end of the first wall upper fold line 5y to between the first side fold line 5x and the third wall upper fold line 12v. 12a extends so as to bisect the first side wall 5 side and the inner lid component 12c side. Accordingly, the first folding part 12a is located between the first folding lower part 12a1 positioned between the folding part folding line 12u and the assembly folding line 12w, and between the assembly folding line 12w and the third wall upper folding line 12v. It is separated from the first folding upper part 12a2 that is located. The inner lid constituting part 12c of this embodiment is continuous with the first folding upper part 12a2.
More specifically, the direction in which the assembly folding line 12w extends is a direction that bisects the angle between the first side folding line 5x and the third wall upper folding line 12v that are orthogonal to each other. is there. That is, the angle formed by the assembly fold line 12w and the first side fold line 5x or the third wall upper fold line 12v is 45 degrees.
Further, the direction in which the assembly folding line 12w extends is a direction orthogonal to the folding part folding line 12u, and the assembly folding line 12w extends to a position where one end thereof reaches the folding part folding line 12u. The position at which the folding part folding line 12u and the assembly folding line 12w are in contact is the position of the outer end of the folding part folding line 12u.
The assembly folding line 12w having such a configuration facilitates the box assembling operation, as will be described later. That is, the box can be assembled more easily.

  In addition, the inner lid constituting portion 12c of the folding portion 12 of the present embodiment extends to the outside of the box (outward in the X direction) to a position adjacent to the inner lid outer portion 3, and the inner lid inner portion 4 and It is separated from the outer 3 of the inner lid. Further, the inner lid constituting part 12c includes a narrow portion on the tip side extending to the outside of the box.

The length of the inner lid component 12c (the length in the X direction) is not less than half the length of the first wall upper fold line 5y and not more than the same length as the first wall upper fold line 5y. That's it.
When the inner lid constituting portion 12c has such a length, when the box is assembled, when the inner lid constituting portion 12c is folded on the inner lid inner portion 4, the paired inner lid constituting portions 12c overlap each other. become. The structure in which the pair of inner lid components 12c overlap is a structure that improves the assembling workability of the box, and the box can be assembled more easily. It should be noted that when the two inner lid constituting portions 12c are bent so as to overlap the inner lid inside 4, the upper and lower relations of the two inner lid constituting portions 12c are not limited.
Further, the inner lid constituting portion 12c includes an inner lid constituting base portion 12c1 connected to the third wall upper folding line 12v and an inner lid constituting tip 12c2 having a narrower width than the inner lid constituting base portion 12c1. Inner edge (side edge extending in the X direction adjacent to the inner lid inner part 4 and the inner lid outer part 3) adjacent to the separation cutting part 4x, which is a boundary position between the inner lid constituent base portion 12c1 and the inner lid constituent tip portion 12c2. There is a step 12e at the position. The inner edge of the inner lid constituting tip 12c2 that is outside the box from the step 12e is separated from the inner lid inner part 4 and the inner lid outer part 3. That is, the inner lid constituent tip 12c2 has a notch 12f on the inner edge thereof, and a gap 13a is formed between the inner lid constituent tip 12c2 and the inner lid inner 4 or the inner lid outer 3. . The inner edge of the inner lid constituting base 12c1 and the inner edge of the inner lid constituting tip 12c2 both extend linearly in the X direction, and the depth of the notch 12f (the inner edge of the inner lid constituting base 12c1 The step dimension in the Y direction between the inner edge of the inner lid forming tip 12c2 is constant.
As will be described later, this notch 12f is positioned adjacent to the first wall upper fold line 5y when the inner lid constituting portion 12c is folded on the inner lid inner portion 4 during box assembly (that is, a claw portion folding described later). (Position adjacent to the line 3y). When this notch 12f is present, a part of the upper surface of the inner lid inner portion 4 adjacent to the first wall upper folding line 5y can be seen even when the inner lid constituent portion 12c is folded over the inner lid inner portion 4 when the box is assembled. .
In this state, as will be described later, when the box is assembled, it is easy to insert the claw portion 2 outside the inner lid outer portion 3 between the inner lid inner portion 4 and the inner lid constituting portions 12c, 12c. Can do. That is, if the notch 12f is provided, the box assembly workability is improved.

Each claw part 2 is connected to the outside of each inner lid outer part 3 via a claw part fold line 3y. Each claw portion 2 is provided with a claw insertion fold line 2y extending in the direction (Y direction) in which the first wall upper fold line 5y extends at the center position thereof. That is, each claw part 2 is connected to the inner lid outer part 3 via the claw part folding line 3y, and the claw base part 2a which is a part between the inner lid outer part 3 and the claw insertion folding line 2y, The claw base portion 2a has a claw tip portion 2b connected via a claw insertion folding line 2y.
As will be described later, each claw portion 2 has the inner lid outer portion 3 placed on the inner lid constituting portion 12c in a state where the inner lid constituting portion 12c is folded on the inner lid inner portion 4 when the box is assembled. When overlapped, it is inserted between the inner lid inner part 4 and the inner lid constituting part 12c. When the claw portion 2 is inserted at such a position, the state where the inner lid constituting portion 12c is sandwiched between the inner lid inner portion 4 and the inner lid outer portion 3 is maintained, and the assembled inner lid structure is maintained in a strong state. Be drunk. If the state in which the inner lid constituting portion 12c is sandwiched between the inner lid inner portion 4 and the inner lid outer portion 3 is maintained, the subsequent box assembling work can be performed more easily.
Moreover, if the nail | claw part 2 is a structure as mentioned above, since the nail | claw part 2 can be bend | folded in the position of the fold line 2y, the nail | claw part 2 can be smoothly inserted in a predetermined position. For example, when the claw part 2 is inserted between the inner lid inner part 4 and the inner lid constituent part 12c, if there is no fold line 2y, the entire claw part 2 must be inserted at once, and the surface of the inner lid outer part 3 However, according to the present embodiment, only the toe portion 2b is inserted first, and then the nail base portion 2a is inserted. It can be inserted into a predetermined position very smoothly.

Each closing portion 10 is connected to the outside of each outer lid portion 8, and includes a handle portion 10a continuous to the outside of the outer lid portion 8 via a fold line 8x, and a through hole portion 10h inside the handle portion 10a (see FIG. 4 (E)), a first tongue (engaging tongue) 10b protruding from the outer lid 8 toward the first cutting line 10u, and a first tongue 10b. Is provided with a fold line for engagement 10v formed in a state extending in the Y direction.
That is, the pair of outer lid part 8, handle part 10a and first tongue part (engagement tongue part) 10b constituting the box external structure can assemble a box having the box bottom part 6 and the side wall parts 5 and 7. It constitutes a part of the blank 1b.

The pair of handle portions 10a are folded at the position of the fold line 8x when the box is assembled, and overlap each other (see FIG. 4G). That is, each handle portion 10a has an upright position (see FIG. 4G) that can be brought into contact with each other when the pair of outer lid portions 8 are in the closed position, and the handle portion 10a. It is formed in a state in which it can be bent to a lying position in contact with the outer lid portion 8 that is connected to. That is, the standing position of the handle portion 10a is a position where the handle can be configured by facing the other handle portion, and the lying position is a position in contact with the outer lid portion. The closed position of the outer lid 8 is a closed state superimposed on the outer lid 3 of the assembled box, and the open position is an opened position separated from the outer lid 3 of the assembled box. It is a state.
The first tongue portion (engagement tongue portion) 10b is arranged at a position where the outer side thereof is surrounded by the first cutting line 10u in the expanded state of the blank 1b. That is, the first tongue portion 10b is disposed at a position surrounded by the handle portion 10a when the blank 1b is in the developed state. Therefore, as will be described later, the blank material 1b is assembled, the pair of cuts 10x are engaged with each other, and the pair of handle portions 10a are positioned in the upright position (see FIG. 4G), and the handle is moved. When configured, a through hole 10h (see FIG. 4E) surrounded by the handle is formed.
Further, both ends of the first cutting line 10u reach the folding line 8x. Therefore, even if the handle portion 10a is bent at the position of the fold line 8x, the first tongue portion 10b is not bent.
More specifically, the connecting portion between the outer lid portion 8 and the closing portion 10 includes a folding line 8x located on the boundary line 8u between the outer lid portion 8 and the handle portion 10a, the outer lid portion 8 and the first tongue portion 10b. The communication part 10c which connects (base part 10b1), and the notch 10x located in the boundary of the outer cover part 8 and the 1st tongue part 10b (tip part 10b2) are provided. The fold line 8x and the cut 10x both extend in the X direction, and the cut 10x is located on the extension line of the fold line 8x. Further, the pair of cuts 10x are formed at positions that can be engaged with each other when the pair of outer lid portions 8 are in the closed state. Accordingly, when the pair of cuts 10x are engaged with each other, the closed state of the pair of outer lid portions 8 is maintained.
The first tongue portion 10b has a base portion 10b1 of the first tongue portion on the communication portion 10c side with the engagement fold line 10v as a boundary, and a first tongue portion on the incision 10x side with the engagement fold line 10v as a boundary. And a tip portion 10b2. The leading end of the cut 10x reaches the base end of the engagement folding line 10v. Therefore, the tip portion 10b2 of the first tongue portion can be bent at the position of the engagement folding line 10v. Further, no fold line is formed at the position of the communication portion 10c. Therefore, even if the handle portion 10a is bent at the position of the fold line 8x or the tip portion 10b2 of the first tongue portion 10b is bent at the position of the fold line 10v, the first tongue portion 10b is not in contact with the outer lid portion 8. Does not bend.
As can be understood from the above description, the tip portion 10b2 of the first tongue portion (engaging tongue portion) 10b is adjacent to the outer lid portion 8 through the notch 10x, and the base portion 10b1 is connected to the outer lid portion 8. It is something that communicates. The tip 10b2 has an angle formed between the base 10b1 and an extension position (see FIG. 4 (H)) that is positioned in the same plane as the base 10b1 and the outer lid 8 and the base 10b1 at a right angle or It can be bent to an acute angle bending position (see FIG. 4F). Therefore, when each outer lid portion 8 is positioned in the closed state with the tip portion 10b2 of each first tongue portion (engagement tongue portion) 10b bent to the bending position, the base portion 10b1 connected to each tip portion 10b2 is It will be in the state piled up on the outer surface of the other outer lid part 8 connected to the other first tongue part (engagement tongue part) 10b. In this state, when the tip portion 10b2 of each first tongue portion (engagement tongue portion) 10b positioned at the bending position is positioned at the extended position, each tip portion 10b2 becomes the other first tongue portion (engagement tongue). Part) 10b is overlaid on the outer lid part 8 connected to 10b, that is, the pair of cuts 10x are engaged with each other.

The shape of the pair of handle portions 10a of the pair of closing portions 10 and the pair of first cutting lines 10u is symmetrical with respect to the center line in the Y direction passing through the center of the box bottom 6 and is completely assembled when the box is assembled. Can be overlaid on top of each other. Further, the shape of the pair of first tongue portions 10b of the pair of closing portions 10, the position of the pair of cuts 10x, and the position of the pair of communication portions 10c are the center point of the box bottom 6 (in this embodiment, the rectangular box bottom 6 The shape or arrangement is point-symmetric with respect to the diagonal line).
With this configuration, when the box is assembled, the notch 10x adjacent to one first tongue 10b is connected to the communication portion 10c adjacent to the other first tongue 10b in a state where the pair of handle portions 10a are overlapped. Thus, the pair of first tongue portions 10b of the pair of closing portions 10 can be engaged with each other. Thereby, the lid closed state of the assembled box can be easily maintained.

  Next, a procedure for assembling the blank 1b having such a configuration into a box will be described.

The assembling procedure of the blank material 1b of the second embodiment has a part common to the assembling procedure of the blank material 1b of the first embodiment. Therefore, here, a different part from the assembly procedure in the first embodiment will be described, and a detailed description of portions common to the assembly procedure described in the first embodiment may be omitted.
As with the first embodiment, the assembly of the blank 1b of the present embodiment includes a side wall standing up process, an inner lid process, an outer lid process, and a box closing process. However, in the present embodiment, unlike the first embodiment, it is preferable to perform the inner lid process before the side wall standing-up process.

In the inner lid step, first, the pair of inner lid interiors 4 and 4 are bent at the position of the first wall upper fold line 5y (see the upper half of FIG. 4A).
Next, each inner lid component 12c is overlaid on the adjacent inner lid interior 4 (see the lower half of FIG. 4A). It should be noted that when the two inner lid constituting portions 12c are stacked on one inner lid inside 4, the upper and lower relations of the two inner lid constituting portions 12c do not matter.
Since the blank material 1b of the present embodiment is provided with the folding line 12w for assembly, each inner lid constituting part 12c is bent before the side wall erecting step by folding the folding part 12 at the position of the folding line 12w for assembly. Can be overlaid on the adjacent inner lid interior 4.
Next, each inner lid exterior 3 is folded so as to be superimposed on the inner lid components 12c, 12c folded on the inner lid interior 4 (see the upper half of FIG. 4B). As a result, the inner lid constituent parts 12c, 12c are sandwiched between the inner lid inner part 4 and the inner lid outer part 3.
In addition, when each inner lid outer part 3 is bent and stacked on the inner lid constituent parts 12c, 12c, the claw part 2 is inserted between the inner lid inner part 4 and the inner lid constituent parts 12c, 12c (FIG. 4C). reference). Thereby, the inner lid outer lid part 3 is positioned with respect to the inner lid inner part 3 and the inner lid constituent part 12c, and the state in which the inner lid constituent part 12c is sandwiched between the inner lid inner part 4 and the inner lid outer part 3 is maintained. . That is, the assembly of the inner lid constituted by the inner lid inner portion 4, the inner lid outer portion 3, and the inner lid constituting portion 12c is completed. When the assembly of the inner lid is completed, the subsequent box assembly work can be performed more easily.
In addition, when accommodating a thing in a box, it is preferable to accommodate a thing in a box after completion | finish of an inner cover process.

Next, a side wall standing up process is performed. The side wall standing up process is basically the same as in the first embodiment. That is, while folding the first folding part 12a and the second folding part 12b of the four folding parts 12 into the box, the pair of first side wall parts 5 and 5 and the pair of second side wall parts 7 and 7 are attached to the box bottom part 6. Stand up against.
However, in the side wall standing step of the present embodiment, first, the first side wall portion 5 and the folding portion 12 are bent along the first bottom fold line 6y and the second side fold line 7y (FIG. 4). (See (D)), the folded state at the position of the assembly folding line 12w folded in the inner lid process is restored.
Thereby, the 1st folding | folding part 12a will be in the state which the whole spread to one flat form, and will be in the state which four side wall parts stood up (refer FIG.4 (E)). As a result, as in the first embodiment, the first folding portion 12a connected to the inner lid constituting portion 12c is positioned so as to be oriented along the second side wall portion 7 (direction perpendicular to the box bottom portion 6).
Further, a pair of inner lids constituted by the inner lid constituting portion 12c with the inner lid inner portion 4 and the inner lid outer portion 3 are formed into a ceiling portion (in the box inner space surrounded by the box bottom portion 6 and the four side wall portions 5 and 7 ( It will be in the state located in the box inner space upper end part enclosed by a pair of 1st wall upper fold line 5y and a pair of 2nd wall upper fold line 7x (refer FIG.4 (E)). That is, a rectangular parallelepiped box space in which the ceiling of the box space is covered by the pair of inner lids is secured.

Next, an outer lid process is performed. That is, the pair of outer lid portions 8 are bent so as to overlap the outer outer lid portion 3 (see FIG. 4F).
Subsequently, a box closing process is performed. In the box closing step, the outer lid portion 8 is folded so as to overlap the outer portion of the inner lid 3, and at the same time, folded at the position of the folding line 8x so that each handle portion 10a of each closing portion 10 stands up (see FIG. 4). (See (F)), the pair of handle portions 10a are overlapped so as to face each other (face-to-face contact). Thereby, the handle in which the pair of handle portions 10a are overlapped is completed.
At this time, since the first tongue portion 10d is not bent, a through hole portion 10h is formed inside each handle portion 10a.
At this time, the through-hole portion 10h is in a state positioned above the pair of cuts 10x that are engaged with each other (see FIG. 4G). And each 1st tongue part (engagement tongue part) 10b will be in the state which penetrates the inside of the through-hole part 10h formed inside the handle part 10a which opposes (refer FIG. 4 (F), (G)).
In the box closing process, when the pair of handle portions 10a are overlapped, the tip portion 10b2 of the first tongue portion 10b is bent with respect to the base portion 10b1 of the first tongue portion 10b at the position of the engagement folding line 10v (FIG. 4). (See (F) and (G)). That is, the tip portion 10b2 is bent to the bending position. In this case, when the pair of handle portions 10a are overlapped, the base portion 10b1 connected to each outer lid portion 8 is overlaid on the upper side of the opposed outer lid portion 8. Thereafter, when the pair of bent front portions 10b2 and 10b2 are returned to their original positions (in the extended position), the pair of first tongue portions 10b and 10b are engaged with each other (see FIG. 4 (H)). In other words, the pair of cuts 10x are engaged with each other. Thereby, the assembled box is in a state in which the lid closed state is maintained, and the assembly of the box is completed.
Thus, the box can be fixed in a closed state only by engaging one engaging portion (a pair of first tongue portions 10b, 10b) located at the center of the box, Excellent assembly workability. Further, if the engagement location is in such a position, a deformation operation (see FIG. 5) in a box assembly state, which will be described later, can be realized, and if the engagement location is one location, the deformation operation can be performed. There is an advantage that it can be performed very easily.

  By the way, if the blank material 1b of the present embodiment is used, not only the above-described box assembly state (see FIG. 4 (H)) but also the state where the box ceiling is flattened and the lid closed as described below. It is possible to assemble the box while achieving both the state (the state in which the pair of cuts 10x (the first tongue portion 10b) are engaged with each other). That is, the blank material 1b of the present embodiment can achieve both the flattening of the ceiling of the box and the maintenance of the closed state of the box (a state in which the pair of cuts 10x (first tongue 10b) are engaged with each other). It has an external structure. When the ceiling of the box becomes flat, the boxes can be stacked on the box, so that the boxes can be loaded with a high degree of integration.

For example, a box assembled using the blank 1b of the present embodiment can be deformed from the state shown in FIG. 5A to the state shown in FIG.
In the case of deformation, first, the pair of handle portions 10a overlapped in the face-to-face contact state is tilted (see FIG. 5B). This facilitates visual recognition of the first tongue portions (engagement tongue portions) 10b, that is, the cuts 10x, which are engaged with each other, and facilitates the work on the first tongue portion 10b. In this state, the tip portions 10b2 of the pair of first tongue portions 10b in the engaged state are bent to the bending position (see FIG. 5C) to release the engaged state, and the pair of face-to-face contact states are released. The handle portion 10a is separated. Note that the tip portion 10b2 is left in an upright state (bended at the bending position). Then, the entire closing portion 10 including one handle portion 10a and one outer lid portion 8 (the outer lid portion 8 shown on the front side in FIG. 5C) connected to the entire closing portion 10 are placed on the inner lid outer portion 3. Further, the entire closing portion 10 including the other handle portion 10a and the other outer lid portion 8 (the outer lid portion 8 shown on the back side in FIG. 5C) are overlapped.
At this time, the other outer lid portion 8 is positioned below the base portion 10b1 of the first tongue portion 10b of the one closing portion 10b, and the base portion 10b1 of the first tongue portion 10b of the other closing portion 10b is moved to one side. It is located above the outer lid portion 8 (see FIG. 5C). That is, while inserting the other outer lid portion 8 so as to be sandwiched between the base portion 10b1 of the first tongue portion 10b of the one closing portion 10b and the inner lid outer portion 3, the one outer lid portion 8 is inserted into the other closing portion. It is inserted so as to be sandwiched between the base portion 10b1 of the first tongue portion 10b of 10b and the inner lid exterior 3. As described above, since the tip portions 10b2 of the pair of first tongue portions 10b are in the standing state (the state of the bending position), such work can be easily performed.
Thereafter, the tip portions 10b2 of the pair of first tongue portions 10b in the standing state (bending position state) are tilted so as to contact the outer lid portion 8 (see FIGS. 5D and 5E). That is, the front portion 10b2 is positioned at the extended position. Then, the pair of first tongue portions 10b (cuts 10x) are engaged with each other, and the pair of first tongue portions 10b and the handle portion 10a are positioned at the flattened position (FIG. 5 ( F)). This state is a state in which the pair of first tongue portions 10b are engaged, and the ceiling portion of the box is a flat surface.
Therefore, when such a deformation is performed, it is possible to achieve both the state in which the pair of cuts 10x, that is, the first tongue (engagement tongue) 10b are engaged with each other and the flattening of the box ceiling. If the ceiling of the box becomes flat, it is possible to stack boxes on the box and load the boxes with a high degree of integration.

Further, in the box (see FIG. 4H) in which the blank material 1b of the present embodiment is assembled, the face-to-face contact state of the pair of handle portions 10a is released while maintaining the engagement state of the pair of cuts 10x. Each handle portion 10a can be brought into contact with the outer lid portion 8. In other words, this box can be assembled in a state where it can be stacked (a state where a handle is not required) and can also be suspended and carried in a state (a state where a handle is required). Although it can be assembled, both states can be easily realized in this way by engaging the engaging part (the pair of first tongues 10b, 10b or the notches 10x, 10x) at the center of the handle at one place. It is also possible that it is a structure that can maintain the assembled state of the box simply by making it. That is, the engaging portions (the pair of first tongue portions 10b and 10b or the notches 10x and 10x) of the present embodiment basically function as engaging means, but the handle portion 10a functions as a handle. Realizes a structure that can be easily deformed into a state and a state that functions as a box mounting surface that allows a box to be loaded instead of functioning as a handle (a state that functions as a member constituting a flat box ceiling surface) It plays an important role in the above. The use of the engaging portion as used in the present embodiment in which the engaging portion is one place is the reason why the handle having both functions described above (that is, a structure that can be easily deformed into a state in which each function can be realized). Handle) can be realized.
When such deformation is performed, the box ceiling is flat and the boxes can be stacked on the boxes, as in the case of the deformation as described above. be able to.

Thus, in the box in which the blank material of this embodiment is assembled, the ceiling of the box can be flattened by performing at least the deformation of the two patterns described above. For example, if the former method is used, the pair of first tongue portions (engagement tongue portions) 10b, that is, the notches 10x can be engaged while flattening the ceiling portion of the box. On the other hand, if the latter method is used, the ceiling of the box can be flattened while maintaining the engagement of the first tongue (engagement tongue) 10b, that is, the cut 10x.
In other words, the box external structure of the blank material of the present embodiment can realize the flattening of the ceiling of the box and the engagement of the pair of first tongues (engagement tongues) 10b, that is, the notches 10x at the same time. It is provided with a plurality of modes for realizing such a thing. Therefore, a plurality of modes can be properly used according to the situation.

  Further, the closed portion 10 (that is, the handle portion 10a) of the blank 1b of the present embodiment has a size that does not protrude from the outline of the box when folded to the lying position in the box assembly state (FIGS. 5B and 5B). F)). In other words, the closing portion 10 (that is, the handle portion 10a) has a size that does not protrude from the outer lid portion 8 when bent to the lying down position. Therefore, when placing the boxes side by side, they can be placed with their side surfaces in close contact, and the boxes can also be placed with a high degree of integration.

  Further, the first side wall part 5, the first folding part 12a and the second folding part 12b in the state shown in FIG. 4C are moved inward along the first bottom folding line 6y and the second side folding line 7y. When the inner lid portion 4 and the inner lid constituting portion 12c are folded inward or outward along the first wall upper folding line 5y, the first side wall portion is formed on the box bottom portion 6 and the second side wall portions 7 and 7. 5. The folding part 12 and the inner lid part 4 can be folded over (see FIG. 5G). Then, the outer lid portion 8 can be further folded so as to be folded over the folded first side wall portion 5 and the folded portion 12 (see FIG. 5H). Such a bent state is a state in which the blank material 1b before being assembled as a box is excellent in transportability. That is, the blank 1b of Example 2 is also excellent in transportability. This is the same for the blank material of each example.

  Further, the use in the state where the assembled box is opened is the same as that in the first embodiment, and the description thereof is omitted here (see FIG. 2).

Next, the blank 1c of the third embodiment will be described with reference to FIG.
The blank material 1c of the third embodiment has the same configuration as the blank material 1b of the second embodiment. Therefore, here, the configuration different from the blank material 1b of the second embodiment will be described, and the same reference numerals are used for the configurations common to the second embodiment, and the detailed description thereof may be omitted.

  The blank material 1c of the third embodiment is different from the blank material 1b of the second embodiment in the configuration of the inner lid inner portion 4 and the handle portion 10a of the closing portion 10.

As in the second embodiment, the blank 1c according to the present embodiment includes a pair of outer lid portions 8 connected to the upper end of the second side wall portion 7 (one side wall portion) arranged to face each other, and further arranged to face each other. A pair of second tongue portions 4a (engaging flaps) connected to the upper end of the first side wall portion 5 (the other side wall portion) is provided. More specifically, in the blank 1c of the present embodiment, a cutting line 4u for forming the second tongue 4a is formed in the inner lid inside 4. That is, the second tongue portion 4a is configured to protrude from the upper end edge (first wall upper folding line 5y) of the first side wall portion 5 toward the inner lid exterior 3 side.
Each second tongue 4a includes a slit 4s extending in a direction orthogonal to the first wall upper fold line 5y. That is, the slit 4s is disposed adjacent to the arc-shaped portion 10e (handle portion) and extends in the vertical direction. Further, one end of the slit 4s is located at an intermediate point of the first wall upper fold line 5y, and extends from the one end toward the outside of the box in the Y direction. The other end (outer end) of the slit 4s is a position that does not reach the outer peripheral edge of the second tongue 4a.
Each second tongue 4a has an engagement position (see FIG. 8A) in which a later-described protrusion (engagement protrusion, penetrating protrusion) 10d passes through the slit 4s, and the protrusion 10d extends from the slit 4s. It can be bent to a disengaged position that is in a separated state.

Each handle portion 10a includes a locking projection 10d with which the slit 4s in the inner lid inside 4 is engaged during box assembly. The protrusions 10d are formed at both ends of the handle portion 10a in the width direction (Y direction), which is the outer edge (upper edge) of the handle portion 10a. As will be described later, the protrusion 10d provided in each handle portion 10a can be inserted into the slit 4s while penetrating the slit 4s when the box is assembled.
Each handle portion 10a includes an arc-shaped portion 10e that is a substantial handle between the protrusions 10d and 10d at both ends. A notch 10f cut in a valley shape toward the inner side of the box is formed between the arc-shaped portion 10e and each projection 10d. In other words, the handle portion 10a includes a notch 10f that can position the upper end of the slit 4s in a state in which the protrusion 10d is inserted at a position adjacent to the protrusion 10d (and the upper edge of the handle portion 10a). It can be said that Therefore, it may be considered that the slit 4s in the inner lid inside 4 is engaged with the notch 10f.

  Next, a procedure for assembling the blank material 1c of this embodiment into a box will be described.

The assembling procedure of the blank material 1c has a common part with the assembling procedure of the blank material 1b of the second embodiment. Therefore, here, a different part from the assembly procedure in the second embodiment will be described, and a detailed description of parts common to the assembly procedure described in the second embodiment may be omitted.
The procedure for assembling the blank 1c includes an inner lid process, a side wall standing process, an outer lid process, and a box closing process, as in the second embodiment.

In the inner lid process, first, as in the second embodiment, the pair of inner lid interiors 4 and 4 are bent at the position of the first wall upper folding line 5y. However, in the present embodiment, at this time, the second tongue 4a is not bent (see the upper half of FIG. 7A).
Subsequently, as in the second embodiment, each inner lid component 12c is overlaid on the adjacent inner lid inner 4 (see the lower half of FIG. 7A), and each inner lid outer 3 is placed in the middle. The inner lid constituent portions 12c and 12c are folded so as to overlap with the lid constituent portions 12c and 12c, and the inner lid inner portion 4 and the outer outer lid 3 are sandwiched (see the lower half of FIG. 7B).
Thereafter, the claw portion 2 is inserted between the inner lid inner portion 4 and the inner lid constituting portions 12c, 12c (see FIG. 7C). Thereby, the assembly of the inner lid constituted by the inner lid inner portion 4, the inner lid outer portion 3 and the inner lid constituting portion 12c is completed.

Next, the side wall standing up process and the outer lid process are performed continuously. Note that the procedures of both steps are the same as those in the second embodiment, and thus detailed description thereof is omitted here.
When the side wall standing-up process is performed and the outer lid process is further performed, the pair of outer lid portions 8 are bent so as to overlap the outer outer lid 3 (see FIGS. 7D to 7F). ).

Next, a box closing process is performed. In the box closing process, first, similarly to the second embodiment, each outer lid portion 8 is bent so as to be superimposed on the inner lid outer portion 3 (see FIG. 7G). Further, at this time, the handle portions 10a of the pair of closing portions 10 are overlapped so as to be folded so as to face each other. Thereby, a handle provided with a through hole inside is completed.
Further, the handle portion 10a is overlapped in a state where the tip portion 10b2 of the first tongue portion 10b is bent in an upright state in advance. Then, at the same time as overlapping, both base portions 10b1 of the pair of first tongue portions 10b, 10b are both overlaid on the upper side of the opposing outer lid portion 8.
Thereafter, the tip portion 10b2 of the first tongue portion 10b, which has been bent in a standing state in advance, is returned to its original position. Then, the pair of first tongue portions 10b and 10b are engaged with each other. Thereby, the lid closed state of the assembled box can be maintained.
In assembling the blank material 1c of the present embodiment, the following operation is further performed.
That is, the second tongue slit (engagement flap) 4s in each inner lid 4 is engaged with the projections (engagement projections) 10d on both shoulders of each handle portion 10a (FIGS. 7H and 8). A)). As a result, the overlapping state of the handle portions 10a overlapped with each other is more reliably maintained, and the assembly of the box is completed. The assembled box in which the protrusion (engagement protrusion) 10d is engaged with the second tongue slit (engagement flap) 4s is suitable as a box for storing heavier items.

  In addition, the blank material 1c of a present Example can be folded in the state excellent in the conveyance property like the blank material 1b of 2nd Example (refer FIG.5 (H)), and is 1st Example. Similar to the blank 1a (see FIG. 2), the box opened after assembly (see FIG. 8B) can be used as a dish-like container (see FIG. 8C).

Next, a blank 1d according to a fourth embodiment will be described with reference to FIG.
The blank material 1d has the same configuration as the blank material 1a of the first embodiment. Therefore, here, a configuration different from the blank 1a will be described, and the same reference numerals are used for the common configurations, and detailed description thereof may be omitted.

The blank material 1d differs from the blank material 1a of the first embodiment in the configuration of the closing portion 9 and the folding portion 12. Further, the blank material 1d differs from the blank material 1a in that it includes a slit 50 and a claw portion 20 that are not provided in the blank material 1a of the first embodiment.
In addition, since the folding part 12 and the nail | claw part 20 of a present Example have many parts in common with the folding part 12 and the claw part 2 of 2nd Example (refer FIG. 3), here, the blank material of 2nd Example Differences between the folding portion 12 and the claw portion 2 of 1b will be described.

  The slit 50 is a portion to which the claw portion 20 is engaged during the assembly of the inner lid (inner lid process), and is formed at the position of the first wall upper fold line 5y. More specifically, the slit 50 for assembling the inner lid includes a slit central portion 50a formed in a position adjacent to the first wall upper fold line 5y in the inner lid inner portion 4, and a slit central portion 50a. Slit side portions 50b formed at both end portions are provided. The slit center portion 50a extends in the same direction (Y direction) as the first wall upper fold line 5y. That is, the slit 50 is formed on the inner lid inner side 4 side (outer side of the box) of the first wall upper fold line 5y.

The length dimension of the claw part 20 in the outward direction (X direction) is shorter than the dimension of the claw part 2 of the second embodiment. Moreover, the nail | claw part 20 is a taper shape toward the X direction outer side. Further, the claw portion 20 includes a constricted portion 20a at both ends in the width direction (Y direction) of the base portion.
When the slit 50 and the claw portion 20 have such a shape, the operation of inserting the claw portion 20 into the slit 50 can be easily and quickly performed in the below-described inner lid process. Further, the claw portion 20 inserted into the slit 50 is difficult to come off.

The closing portion 9 includes a notch 9v having a shape different from that of the notch 9u of the first embodiment and two tongue pieces 9a and 9b divided through the notch 9v at the center thereof.
Unlike the first embodiment, one tongue piece 9a includes a bulging portion (projecting portion) 9c that protrudes in the X direction toward the other tongue piece 9b. The bulging portion 9c has an arc shape at the outer edge. That is, the notch 9v formed for closing the lid has an end in the Y direction on the center of the boundary line 8u with the outer lid 8, and extends from this position outward in the Y direction. Moreover, the shape is an arc shape.
The length dimension in the Y direction of the other tongue piece 9b is shorter than the length dimension of the longest portion in the Y direction of one tongue piece 9a. The outer end edge of the other tongue piece 9b extending in the width direction (X direction) is in the width direction inner side (one tongue piece side), and the bulging portion of one tongue piece 9a (in the width direction of the arc-shaped outer edge). (The position of the vertex).
This contact position is closer to the boundary line 8u than the outer edge position of the longest portion in the Y direction of the other tongue piece 9b. In other words, a valley-shaped (V-shaped) recess for engagement is formed on the outer side in the Y direction (in other words, at the center of the outer edge of the closing portion 9) of the contact portion of both tongue pieces 9a, 9b. . Further, the outer edges of both tongue pieces 9a, 9b in the Y direction are provided with inclined portions 9s. In the present embodiment, the inclined portion 9s of each tongue piece 9a, 9b has a height that decreases toward the outer portion in the width direction (X direction).
When the shape of the closing portion is such a shape, the pair of closing portions can be more easily, quickly and reliably engaged. In addition, about the structure which is common in the closing part 9 of 1st Example other than the structure demonstrated here, the same code | symbol is used and the description may be abbreviate | omitted.

  The folding portion 12 is different from that of the second embodiment in the position of the step portion 12e of the inner lid constituting portion 12c. In this embodiment, the stepped portion 12e is formed at a position where the stepped portion 12e and the end of the claw 20 overlap when the box is assembled. A gap 13b is formed between the inner lid constituting portion 12c and the inner lid outer portion 3 and the inner lid inner portion 4 over the entire length of the inner lid constituting portion 12c.

  Next, a procedure for assembling the blank 1d having such a configuration into a box will be described.

The procedure for assembling the blank 1d according to the fourth embodiment includes an inner lid process, a side wall standing process, an outer lid process, and a box closing process, as in the second and third embodiments. Among these, for the side wall standing up step and the outer lid step, the same procedure as that of the second embodiment can be used.
Therefore, here, the inner lid process and the box closing process of this embodiment will be described, and the description of the other processes will be omitted.

In the inner lid step, first, as in the second embodiment, the inside of the inner lid is folded inside the box at the position of the first wall upper fold line 5y (see the lower half of FIG. 10A).
Next, as in the second embodiment, the pair of inner lid components 12c are folded inward so as to overlap the inner lid 4 at the position of the assembly folding line 12w (see the upper half of FIG. 10A). ).
Next, as in the second embodiment, the inner lid outer part 3 is bent inward of the box at the position of the inner lid folding line 4y (see the lower half of FIG. 10B). As a result, the folded inner lid component 12c is sandwiched between the inner lid inner part 4 and the inner lid outer part 3.
And the nail | claw 20 is inserted in the slit 50 (refer the upper half of FIG. 10 (A)). Thereby, the assembly of the inner lid is completed.
Thereafter, the side wall standing up process and the outer cover process are performed as in the second embodiment.

And a box closing process is performed. The box closing process is basically the same as the procedure of the first embodiment.
That is, when the outer lid portion 8 is folded so as to overlap the outer portion of the inner lid 3, the notches 9v of the pair of closing portions 9 are engaged with each other (box closing step).
In other words, first, the tongue piece 9b (one tongue piece) is inserted between the outer lid portion 8 on the opposite side and the inner lid (outer lid portion 3) and positioned inside the box of the outer lid portion 8. . Then, the tongue piece 9a (the other tongue piece, the covering portion) is overlapped on the outer side of the box of the outer lid portion 8 so as to cover the outer lid portion 8 on the opposite side, thereby cutting the pair of closing portions 9 Engage 9v. Thereby, the bulging portions (projections) of the pair of closing portions 9 are engaged with each other. As a result, the lid closed state is maintained, and the assembly of the box is completed.

Next, a blank 1e according to a fifth embodiment will be described with reference to FIG.
The blank material 1e is different from the blank material 1d of the fourth embodiment in the configuration of the claw portion 21, but the configuration other than this is common. Therefore, here, the claw portion 21 of the blank 1d will be described, and the other components may be denoted by common reference numerals and detailed description thereof may be omitted.

  The claw portion 21 is a portion that is hooked by the slit 50 during the assembly of the inner lid (inner lid process), and the length dimension in the outer direction (X direction) is shorter than the dimension of the claw portion in the second embodiment. . More specifically, the length dimension in the X direction of the claw portion 21 is 5 to 10 times the paper thickness of the blank 1d. Further, the claw portion 21 does not include a constricted portion.

  Next, a procedure for assembling the blank material 1d of this embodiment into a box will be described.

  The procedure for assembling the blank 1e of the present embodiment can be the same as that of the fourth embodiment except for the inner lid process. Therefore, here, the inner lid process different from the fourth embodiment will be described in detail, and the description of the other processes will be omitted.

In the inner lid process, first, the pair of inner lid components 12c are folded inward at the assembly folding line 12w so as to overlap the inner surface of the first side wall 5 (see the lower half of FIG. 12A). ).
Next, the inner lid interior 4 is folded inward of the box at the position of the first wall upper fold line 5y (see the lower half of FIG. 12B). As a result, the inner lid interior 4 is overlaid on the folded inner lid constituting portion 12c.
Then, the inner lid outer part 3 is bent inward of the box at the position of the inner lid folding line 4y (see the lower half of FIG. 12C). As a result, the inner lid outer portion 3 is sandwiched between the folded inner lid constituting portion 12c and the first side wall portion 5, and the claw 21 is hooked on the slit 50. That is, the assembly of the inner lid is completed.
Thereafter, as in the second embodiment, the box is assembled by performing the side wall standing up process, the outer lid process, and the box closing process.

Next, the blank material 1f of the sixth embodiment will be described with reference to FIG.
Compared with the blank material 1e of the fifth embodiment, the blank material 1f is different in the configuration of the slit formed in the outer side of the inner lid 3, the folding portion 12, and the first wall upper folding line 5y. Other configurations are common.
Therefore, here, the outer lid 3 of the blank material 1d, the folded portion 12, and the slit 51 will be described, and the other components may be denoted by common reference numerals and detailed description thereof may be omitted.
Further, the procedure for assembling the blank material 1f is the same as the procedure for the blank material 1e of the fifth embodiment, and therefore the description thereof is omitted here.

  The outer outer lid 3 is provided with an inclined portion 3w at an edge located on the outer side in the X direction. The inclined portion 3w has a height that decreases toward the outer portion in the width direction (Y direction). Further, the inner lid exterior 3 has a narrower width dimension in the Y direction than the inner lid interior 4, and a step portion at the boundary position on both sides of the inner lid exterior 3 and the inner lid interior 4 in the width direction (Y direction). 4e is formed. When the inner lid outer part 3 has such a shape, the claw portion 21 can be engaged with a slit 51 described later more easily, quickly and reliably.

A part of the outer peripheral edge of the first folding part 12a and the second folding part 12b of the folding part 12 has a convex curved shape (curved shape) toward the outside. For example, as for the 2nd folding part 12b, the whole outer periphery is circular arc shape. Of the outer peripheral edge of the first folding upper portion 12a2 of the first folding portion 12a, a portion adjacent to the inner lid constituting portion 12c is an inclined portion extending in parallel with the assembly folding line 12w. When the outer peripheral shape of the folding portion 12 is such a shape, when the box is opened and used as a dish-like container, the outer shape of the container becomes closer to a circle and is easy to use as a vessel.
The inner lid constituting part 12c does not include the step part 12e provided in the blank material 1e of the fifth embodiment. Further, the gap 13c between the inner lid constituting portion 12c and the inner lid inner portion 4 and the inner lid outer portion 3 has a constant width unlike the gap 13b of the blank material 1d of the fourth embodiment.

  The slit 51 is a portion to which the claw portion 21 is engaged when the inner lid is assembled (inner lid process), and is formed at the position of the first wall upper fold line 5y. More specifically, the slit 51 for assembling the inner lid includes a slit central part 51a formed in a position adjacent to the first wall upper folding line 5y in the first side wall part 5, and a slit central part 51a. Slit side portions 51b formed at both side end portions. The slit central portion 51a extends in the same direction (Y direction) as the first wall upper fold line 5y. That is, unlike the slit 50 (see FIG. 9), the slit 51 is formed on the first side wall portion 5 side (inside the box) of the first wall upper fold line 5y.

Next, a blank 1g according to a seventh embodiment will be described with reference to FIG.
Compared with the blank material 1f of the sixth embodiment, the blank material 1g differs in the configuration of the inner lid outer part 3, the claw part 22, the slit 50, the outer lid part 8 and the closing part 9, but the other parts are common. It is. Therefore, here, the configuration of the outer lid 3 of the blank material 1g, the claw portion 22, the slit 50, the outer lid portion 8 and the closing portion 9 will be described, and the configuration other than these will be described using the same reference numerals. The description may be omitted.

  The inner lid outer part 3 is the same as the inner lid constituting part 3 of the sixth embodiment in that it is narrower than the inner lid inner part 4 and is in contact with the step part 4e. This is the same as the inner lid constituting part 3 of FIG. Therefore, here, the step 4e is denoted by the same reference numeral as that of the sixth embodiment, and the other components are denoted by the same reference numerals as those of the fifth embodiment, and the description thereof may be omitted.

The claw portion 22 includes a constricted portion 22b at both ends in the width direction (Y direction) of the root portion, like the claw portion 20 of the fourth embodiment. Further, the claw part main body 22a on the outer side in the X direction than the constricted part 22b has a trapezoidal shape that tapers outward in the X direction as in the fourth embodiment. A claw fold line 3y extending in the Y direction is formed at the boundary position between the constricted portion 22b and the outer outer lid 3, and a fold extending in the Y direction is formed at the boundary position between the constricted portion 22b and the claw body 22a. A line 22y is formed. That is, the constricted portion 22b is continuous with the inner lid exterior 3 via the folding line 3y, and the claw portion main body 22a is continuous with the constricted portion 22b via the folding line 22y.
Further, the claw portion 22 includes a slit 22s extending in the X direction at the center thereof.
Since the slit 50 is the same as the slit 50 of the blank material 1d of the fourth embodiment, detailed description thereof is omitted here.

The outer lid portion 8 includes intermediate step portions 8e formed on both side edges.
More specifically, the intermediate step portion 8e is formed so as to be positioned at a position adjacent to the constricted portion 22b of the claw portion 22 when the box is assembled. That is, when the box is assembled, the arrangement of the intermediate step portions 8e is determined so that the constricted portion 22b is sandwiched between the intermediate step portions 8e located on both sides of the constricted portion 22b. With this intermediate stepped portion 8e, when the claw portion 22 is hooked on the projection 9d of the closing portion 9 in the closing step described later, the claw portion 22 is smoothly bent at the positions of the fold lines 3y, 22y and directed in an oblique direction. Can be.

The closing part 9 is provided with a notch 9w having a shape different from the notch 9v of the fourth embodiment and two tongue pieces 9a and 9b divided via the notch 9w at the center.
The notch 9W has an end on the inner side in the Y direction located at the center of the boundary line 8u with the outer lid 8, and a notch base 9w1 extending in the X direction with this position as a base end, and a tip of the notch base 9w1 And a cut main body 9w2 extending in the Y direction. More specifically, the cut base 9w1 extends from the base end to the other tongue piece 9b. That is, one tongue piece 9a includes a protruding portion 9c protruding in the X direction toward the other tongue piece 9b.
One tongue piece 9a includes an inclined portion 9s and a protrusion 9d.
The inclined portion 9s is formed at the outer edge of the tongue piece 9a in the Y direction. More specifically, the inclined portion 9s is an inclination whose height decreases from the end closer to the center in the width direction (X direction) of the outer end edge of the tongue piece 9a toward the outer end.
The protrusion 9d is an engagement destination with which the slit 22s of the claw portion 22 is engaged when the box is assembled, and is formed at the outer end portion in the width direction (X direction) of the outer end edge of the tongue piece 9a. In other words, a valley-shaped (V-shaped) recess 9e for engagement is formed on the outer edge of the tongue piece 9a at a position between the inclined portion 9s and the protrusion 9d. It may be considered that the slit 22s is engaged with the recess 9e.
The outer edge in the Y direction of the other tongue piece 9b is in contact with the protruding portion of the one tongue piece 9a on the inner side in the width direction (one tongue piece side). And it can be said that the recessed part for engagement of valley shape (V shape) is formed in the Y direction outer side of the contact part of both the tongue pieces 9a and 9b.
Note that the width dimension in the X direction of the closing portion 9 is the same as the width dimension of the second side wall portion 7 (that is, the width dimension of the wide portion of the outer lid portion 8). That is, the boundary step portion 8f is formed at both ends of the boundary line between the outer lid portion 8 and the closing portion 9.
When the shape of the closing portion is such a shape, the pair of closing portions can be more easily, quickly and reliably engaged. In addition, about the structure which is common in the closing part 9 of 4th Example other than the structure demonstrated here, the same code | symbol is used and the description is abbreviate | omitted.

  Next, a procedure for assembling the blank material 1g having such a configuration into a box will be described.

As in the fifth embodiment, the assembly procedure of the blank material 1g of the seventh embodiment includes an inner lid process, a side wall standing up process, an outer lid process, and a box closing process.
Therefore, here, the assembling procedure of the blank material 1g of the present embodiment will be described focusing on the parts different from the assembling procedure described in the fifth embodiment. Note that description of procedures similar to those of the fifth embodiment may be omitted.

In the inner lid step, first, the pair of inner lid components 12c are folded inward at the assembly folding line 12w so as to overlap the inner surface of the first side wall 5 (see the lower half of FIG. 15A). ).
Next, the inner lid interior 4 is folded inward of the box at the position of the first wall upper fold line 5y (see the upper half of FIG. 15A). As a result, the inner lid interior 4 is overlaid on the folded inner lid constituting portion 12c.
And the nail | claw part 22 is inserted in the slit 50, bend | folding the inner lid exterior 3 in the box inner side in the position of the inner lid folding line 4y (refer FIG. 12 (B)). Then, the outer lid outer portion 3 is sandwiched between the folded inner lid constituting portion 12c and the first side wall portion 5, and the claws 22 protrude from the slit 50 to the outside of the box. That is, the assembly of the inner lid is completed.

  Next, as in the fifth embodiment, a side wall standing step is performed (see FIGS. 15C to 15E), and then an outer lid step is performed. In the outer lid step, the outer lid portion 8 is bent so as to overlap the inner lid. Then, the other tongue piece 9b of each closing part 9 is in a state of being overlaid on the outer lid part 8 connected to the opposing closing part 9.

Next, a box closing process is performed. In the box closing process, the outer lid portion 8 is folded so as to overlap the inner lid, and at the same time, the one tongue piece 9a of each closing portion 10 is folded at the position of the folding line 8x so as to stand upward (FIG. 15 ( D) and (E)), the pair of tongue pieces 9a are overlapped so that the portions near the center of the box face each other (see FIG. 15F).
Furthermore, the claw part main body 22a of each claw part 22 is engaged with the protrusion 9d of the tongue piece 9a (see FIG. 15F). As a result, the lid closed state of the assembled box is more reliably maintained, and the box assembly is completed.

In addition, about the blank material 1g of 7th Example, you may assemble a box using another box closing process demonstrated below.
In another box closing process, the claw portion 22 is placed below the outer lid portion 8. That is, the claw portion 22 is positioned between the inner lid and the outer lid portion 8. This operation may be performed in the inner lid process.
Further, the pair of closing portions 9 are bent so as to overlap the opposing outer lid portions 8. At this time, the notches 9w of the pair of closing portions 9 are engaged with each other. In other words, one tongue piece 9a is engaged.
When such a closing process is used, the box can be assembled from the state shown in FIG. 15E to the state shown in FIG. When assembled in this way, the one tongue piece 9a and the claw portion 22 do not protrude to the outside of the box, and the box ceiling becomes a flat surface, so that the boxes can be stacked with a high degree of integration.
Note that the assembled state can be changed between the state shown in FIG. 15F and the state shown in FIG.

Next, a blank 1h according to an eighth embodiment will be described with reference to FIG.
Compared with the blank material 1b of the second embodiment, the blank material 1h is different in the configuration of the inner lid outer portion 3, the claw portion 23, the folding portion 12 and the closing portion 10 and further includes slits 40 and 51. However, other configurations are common. Therefore, here, these configurations different from the blank 1b will be described, and the same reference numerals are used for the common configurations, and the detailed description thereof may be omitted.

  The inner lid exterior 3 has a tapered shape (substantially triangular) toward the outside of the box (outside in the X direction), and has a configuration in which a claw portion 23 is connected to the tip portion. That is, the height dimension of the inner lid outer part 3 (the length dimension in the X direction from the inner lid folding line 4y to the claw part folding line 3y) is the same as the height dimension of the inner lid inner part 4, and the claw part 23 is This is a triangular portion protruding to the tip side from the nail fold line 3y. The length dimension of the claw portion 23 in the X direction is not particularly limited, but is preferably 5 to 10 times the paper thickness of the blank 1h. Further, the shapes of the inner lid constituting portion 3 and the claw portion 23 are not particularly limited, and may be trapezoidal, for example. In addition, the width dimension of the base of the claw part 23 (the dimension in the Y direction at the position of the claw part folding line 3y) is preferably equal to or less than the length dimension of the slit 51 described later.

The folding part 12 includes a linear assembly folding line 12w extending from the end of the first wall upper folding line 5y to the end of the second wall upper folding line 7x.
The second folding portion 12b includes a second folding lower portion 12b1 surrounded by a second side folding line 7y, a folding portion folding line 12u, and an assembly folding line 12w, and an outer side of the assembly folding line 12w. And two folded upper portions 12b2. The second folding upper portion 12b2 is connected to the first folding upper portion 12a2 via a folding portion folding line 12u. That is, the folding part folding line 12u reaches the outer peripheral edge of the folding part 12 in a state of extending outward from the intersection with the assembly folding line 12w. It should be noted that the outer peripheral edge of the folding part 12 (that is, the outer peripheral edge of the first folding part upper part 12a2 and the second folding part upper part 12b2) reached by the folding part folding line 12u has a bulging shape that bulges outward.
The inner lid constituting part 12c includes a step part 12g on the outer edge extending in the X direction. The width dimension (Y-direction dimension) of the inner lid constituting part 12c on the base side from the stepped part 12g is narrower than the height dimension of the inner lid inside 4. On the other hand, a claw portion 12h is formed on the tip side of the outer edge with respect to the stepped portion 12g. The claw portion 12h protrudes outward in the Y direction from the outer edge, and has a length protruding outward from the slit 40 described later in the box assembly state. Further, the inner lid constituting portion 12c includes an inclined edge 12k having an upward slope from the inner edge side to the outer edge side of the inner lid constituting portion 12c as a leading edge.
A gap 13b is formed between the inner lid constituting portion 12c and the inner lid outer portion 3 and the inner lid inner portion 4 over the entire length of the inner lid constituting portion 12c, as in the fourth embodiment.

The first tongue portion 10b of each closing portion 10 does not include the engagement folding line 10v included in the blank material 1b of the second embodiment. The tip portion 10b2 of the first tongue has a shorter length in the X direction than the tip portion 10b2 of the second embodiment. Further, the tip portion 10b2 of the first tongue portion is shorter in the X direction than the base portion 10b1 (see FIG. 16). That is, on the inner side of the handle portion 10a, a through hole portion 10k surrounded by the tip edge extending in the Y direction of the tip portion 10b2 of the first tongue portion and the first cutting line 10u is formed. The through-hole portion 10k exists even when the blank 1h is in a developed state before assembly.
The shape of the pair of closing portions 10 is a point-symmetric shape or arrangement with respect to the center point of the box bottom 6 (in this embodiment, the intersection of the diagonal lines of the rectangular box bottom 6).

  The slit 40 is a portion to which the claw portion 12h is engaged when the inner lid is assembled (inner lid process), and is formed at the position of the inner lid folding line 4y. More specifically, the slit 40 for assembling the inner lid includes a slit central portion 40a formed in a position adjacent to the inner lid fold line 4y in the outer portion of the inner lid 3, and both sides of the slit central portion 40a. A slit side portion 40b formed at the end portion is provided. The slit central portion 40a extends in the same direction (Y direction) as the inner lid fold line 4y. That is, the slit 40 is formed on the inner lid outer side 3 side (outer side of the box) of the inner lid folding line 4y.

  The slit 51 is a portion to which the claw portion 23 is engaged during the assembly of the inner lid (inner lid process). Like the slit 51 (see FIG. 13) of the thirteenth embodiment, the first wall upper folding line 5y. The slit central portion 51a is formed at a position adjacent to the slit central portion 51a, and the slit side portions 51b are formed at both end portions of the slit central portion 51a. Therefore, detailed description thereof is omitted here.

  Next, a procedure for assembling the blank 1h having such a configuration into a box will be described.

As in the fifth embodiment, the blank material 1h assembly procedure of the present embodiment includes an inner lid process, a side wall standing process, an outer lid process, and a box closing process.
Therefore, here, the assembling procedure of the blank material 1h of the present embodiment will be described focusing on the parts different from the assembling procedure described in the fifth embodiment. Note that description of procedures similar to those of the fifth embodiment may be omitted.

In the middle lid process, the pair of middle lid components 12c are folded inward at the assembly folding line 12w so as to overlap the inner surface of the first side wall 5 (see the lower half of FIG. 17A).
Next, the inner lid inner portion 4 is bent inward of the box at the position of the first wall upper fold line 5y (see the lower half of FIG. 17B). As a result, the inner lid interior 4 is overlaid on the folded inner lid constituting portion 12c.
Then, the inner lid outer part 3 is bent inward of the box at the position of the inner lid folding line 4y (see FIG. 17C). As a result, the inner lid outer portion 3 is sandwiched between the bent inner lid constituting portion 12c and the first side wall portion 5, and the claw portion 23 is hooked on the slit 51. That is, the assembly of the inner lid is completed.
And a side wall standing-up process and an outer cover process are performed similarly to 5th Example (refer FIG.17 (D) to (E)).

Then, a box closing process is performed. Since the box closing process has many parts in common with the box closing process of the second embodiment, here, the description will focus on the differences from the box closing process of the second embodiment, and the common parts will not be described. May be omitted.
In the box closing step, as in the second embodiment, as shown in FIG. 17 (F), the outer lid portion 8 is bent so as to overlap the outer outer lid portion 3, and each handle portion 10a of each closing portion 10 is folded. The pair of handle portions 10a are folded so as to stand up and overlap so as to face each other. Thereby, the handle in which the pair of handle portions 10a are overlapped is completed.
At this time, the tip portions 10b2 and 10b2 of the pair of first tongue portions 10b and 10b are engaged with each other (see FIG. 17F). Thereby, the assembled box is in a state in which the lid closed state is maintained, and the assembly of the box is completed.

In addition, about the blank material 1h of 8th Example, you may assemble a box using another outer cover process and box closing process which are demonstrated below.
In another outer lid process, the outer lid portion 8 is stacked on the inner lid in a state where the handle portion 10a of the closing portion 10 is bent inward (see FIGS. 17G and 17H). Then, in the subsequent lid closing step, the tip portions 10b2, 10b2 of the pair of first tongue portions are engaged with each other (see FIG. 17I).
When such a closing process is used, the box can be assembled from the state shown in FIG. 17E to the state shown in FIG. When assembled in this way, the closed portion 10 does not protrude to the outside of the box, and the ceiling of the box becomes a flat surface, so that the boxes can be stacked with a high degree of integration.
Note that the assembled state can be modified between the state shown in FIG. 17F and the state shown in FIG.

Since the blank material of the embodiment as described above is composed of a single material, it is easy to manufacture, handle, and assemble.
Moreover, since the blank material before an assembly is a structure which can be folded compactly, it is excellent in portability and transportability.
Thus, the stock state of the assembled box is taken into consideration, and it can be used for various purposes, and has a multi-functional and practical configuration. Specifically, it can be assembled quickly and easily. Moreover, it can be used as a container for food cooking using a box or a reheating of a catering food by a microwave oven. When the box is opened, it can be used as a vessel, dish or plate without a sense of incongruity. Since it is not necessary to use an adhesive or a bonding process, it can be manufactured at low cost. Furthermore, when taking out the contents in the box, the structure has the advantage that it can be taken out from the top or from the side.

In addition, the blank material for assembling the box according to the invention of the present application has a configuration in which the cutting line is not in contact with the periphery of the box bottom, so that when the box is opened from the assembled state, the box bottom is the bottom. It has a concave shape and can be used as a plate as it is. Further, by adjusting the depth of the side wall of the box, it can be used as a shallow dish or a deep dish.
Such a structure having no cuts is suitable as a container for soup foods because liquid does not leak from the cuts when used as a dish. That is, there is an advantage that the container can be used as a plate as it is when eating the soup food contained therein. Moreover, since it is the structure which can perform an inner surface lamination process easily, an inner surface lamination process can be performed and it can be used as a box for liquid foods.

Moreover, since it can be assembled (or used) without using an adhesive, it is possible to easily manufacture a blank material simply by cutting a sheet-like material. That is, it is possible to manufacture a blank material with a minimum manufacturing process. More specifically, since it can be manufactured by performing only Thomson processing (processing that performs punching and pressing simultaneously) without applying glue bonding processing (only one process is performed), processing at low cost is possible. It is. Moreover, if the blank material of a present Example is used, the box of the structure fixed and moored partially can be assembled. In the case of such a box, when the box is opened, the contents can be easily taken out from directly above the box or from any position on all four sides of the box.
Thomson processing is processing that simultaneously performs bending line push processing, notch processing, and contour cutting processing in one step in paper container manufacturing. In this way, since the pushing step, the cutting step, and the cutting step can be performed simultaneously in the Thomson process, for example, if the blank material is a material such as cardboard that is not printed on the surface (solid), it is It is possible to manufacture products by performing only the above. For example, the corrugated cardboard material widely used as the blank material as in the above-described embodiment has a structure in which the cardboard is sandwiched up and down so as to sandwich the corrugated paper. Products with a piece of cardboard pasted on one side (semi-finished product) are delivered. Then, when the half-finished product and the cardboard obtained by bonding the cardboard printed at the printing factory are subjected to Thomson processing, a blank material as in the above-described embodiment is manufactured. A box in which a blank material having one surface printed thereon is assembled is also used as a package, and the stored food may be in direct contact with the inner surface of the blank material. In the case of a blank material (package material) used in such a state, it is necessary to use a material (an approved material) that food may contact. In addition, depending on the contents, conditions relating to temperature such as heat resistance may be required. In such a case, it is necessary to use a material that satisfies the temperature conditions such as heat resistance.
Moreover, since it can be assembled into a quadrilateral with no surface irregularities of the box assembly, shrink processing can be performed, and mass productivity is excellent. The shrink process (shrink process) is a process in which a thin material such as a film covering the entire outer periphery of the box is subjected to a heat treatment, so that the thin material is brought into close contact with the entire outer periphery of the box. When such packaging is applied, foreign matter is prevented from entering the product after shipment. It can be sealed and packaged only by heat treatment and is low cost.
Moreover, the box which assembled the blank material of the Example as above-mentioned is suitable as a package with a handle for takeouts, such as fast food.

  In addition, the blank material which concerns on this invention is not restricted to the thing of the said Example. Those modified within the scope of the present invention are included in the scope of the present invention.

For example, as a material of the blank material, various materials that can be used for food packaging, such as thin corrugated cardboard, can be cited in addition to the cardboard used in the above embodiment.
Moreover, what provided functions, such as water resistance, oil resistance, or heat resistance, to the surface of a raw material can be used. Examples of methods for applying these functions to the surface include various application methods such as a method of applying a material for imparting the above functions and a method of attaching a material for imparting the above functions. And as a sticking method, various sticking methods, such as press work, can be mentioned.
Examples of the material to be applied include various coating materials such as a sealing material and a silicon material.
Examples of the surface material to be attached by an attaching method such as press working include various attaching materials such as a film material such as a silicon film and a sheet material.
Various film materials are available, including plant plastic films, petroleum plastic films, films in which plant plastic films and petroleum plastic films are laminated, and films in which plant plastic materials and petroleum plastic materials are mixed. A film can be mentioned. Sheet materials include natural material sheets, plant plastic sheets, plant plastic foam sheets, petroleum plastic sheets, petroleum plastic foam sheets, mixed sheets of plant plastic and petroleum plastic. Various sheets such as a fired sheet obtained by mixing plant plastic and petroleum plastic can be used.
And the structure which sticks one of these films or sheets, the structure which sticks the laminated film which laminated two or more films mentioned above, the structure which sticks the laminated sheet which laminated two or more sheets mentioned above are adopted can do. In the lamination, the same type of film or sheet may be laminated, or different types of films or sheets may be laminated. Furthermore, the structure which affixes the laminated body which laminated | stacked any one or more of the film mentioned above and any one or more of the sheet | seat material mentioned above is employable.
By using the film and sheet described above, it is possible to realize a blank material excellent in water resistance and / or oil resistance and / or heat resistance, in addition to microwave cooking, and a food container box and container in which this is assembled. Can be realized. Microwave cooking compatibility is the suitability of heating food in a box as it is in a microwave oven. That is, the box in which the blank material of this embodiment is assembled is suitable as a container box for cooking microwave food (a cooking container for heating a microwave oven).
That is, what laminated | stacked the said raw material (namely, film and sheet | seat) on the inner surface of the cardboard of a natural material system is preferable as a raw material of the blank material of the Example which concerns on this application. In other words, the above-described film or sheet can be used as an inner liner of a thin-corrugated cardboard. More specifically, a liner coated with a material having at least one of heat resistance, oil resistance, and water resistance (particularly a natural resin material) is applied to the inner surface of the thin means ball. It is a thing.

Further, the blank 1a of the first embodiment is provided with an end cut 7g and a perforation 7g as a structure (separation structure) for facilitating separation, but it may be a blank having only one of them. A blank material that is good or does not have both may be used. However, with this structure, as described above, the outer lid portion 8 can be easily separated from the second side wall portion 7 along the second wall upper fold line 7x. The blank material 1a in a state where the outer lid portion 8 is separated from the second side wall portion 7 has a shape suitable for use as it is as a container.
Note that the end notch may be provided on at least one end side of both end portions of the second wall upper folding line 7x. Moreover, the perforation structure should just be formed in part or all of the 2nd wall upper fold line 7x.
Further, the position where the structure for facilitating separation is formed is not limited to the position along the second wall upper fold line 7x. In addition to the position along the second wall upper fold line 7x, the position for forming the separation facilitating structure is further along the inner lid fold line 4y, the first wall upper fold line 5y, the third wall upper fold line 12v, and the like. Position. It is conceivable to form at a position along at least one of the folding lines 4y, 5y, 7x, and 12v. In addition, the aspect of the easy-to-separate structure formed in each fold line 4y, 5y, 7x, 12v is the same as the case where it is formed at a position along the second wall upper fold line 7x. That is, when forming an end cut, it is only necessary to be provided at one end side of both ends of each fold line 4y, 5y, 12v, and when forming a perforation structure, each fold line It may be formed in part or all of 4y, 5y, 12v.
Using these easy-to-separate structures, the outside of the inner lid 3 outside the inner lid fold line 4y is cut off, or the inside of the inner lid 4 outside the first wall upper fold line 5y and the third wall upper fold line 12v The shape of the blank 1d after the box is opened can be easily brought into a state suitable for use as a container on a plate by separating the outer inner lid constituting portion 12c.
The structure for facilitating separation such as incision and perforation can be applied not only to the blank material of the first embodiment but also to other blank materials.

Also, the width dimension in the X direction of the inner lid inside 4 of the first embodiment is not limited to the dimensions of the above embodiment, but is 30% or more of the length of the second bottom fold line 6x and the second bottom fold. The length is preferably shorter than the same length as the line 6x. And if it is shorter than 50% of the length of the second bottom fold line 6x, a pair of inner lid interiors 4 and 4 cover the open part on the upper side of the box with a pair of inner lid interiors 4 and 4 in order to assemble the box. There is a gap between the 4 tips. If there is a gap, there is an advantage that even after the box is assembled, the contents can be confirmed simply by opening the outer lid. Further, from the viewpoint of securing the assembly strength while securing the gap, the width dimension in the X direction of the inner lid inner part 4 is more preferably 40% or more and 45% or less. Also, if it is longer than 50%, when the open part is covered with a pair of inner lids 4 and 4 when the box is assembled, the inner lids overlap each other and the open part (ceiling part) on the upper side of the box is firmly covered. Therefore, what was accommodated in the box can be protected more reliably. Also, if the width dimension in the X direction of each inner lid inside 4 is, for example, half (50%) the length of the second bottom fold line 6x, the inside of the pair of inner lids 4 and 4 opens the upper side of the box when the box is assembled. When the cover (ceiling) is covered, the inner edges of the inner lid 4, 4 are assembled so that the leading edges (that is, the edges at the position of the inner lid folding line 4y) are in contact with each other, and the contents in the box are reliably protected. In addition, the flatness of the ceiling of the assembled box is further ensured. Thereby, when stacking the assembled boxes, the boxes can be stacked in a more stable state, and the boxes can be stacked with a high degree of integration.
Further, the inner lid outer part 3 may have a size that at least partially overlaps the inner lid outer part 3 and the inner lid constituting part 12c when the inner lid is configured. With this size, when the box is assembled, the inner lid constituting part 12c can be sandwiched by the cooperation of the inner lid outer part 3 and the inner lid inner part 4.
Such a structure is applicable not only to the blank material of the first embodiment, but also to other blank materials provided with the inner lid inner part 3 and the inner lid outer part 4 having the same structure.

Moreover, various structures can be mentioned as a structure which engages a closing part in order to close a lid | cover. For example, the first embodiment is a structure in which the notches 9u of the closing portion 9 are engaged with each other, and the second embodiment is a structure in which the first tongue portions 10 of the closing portion 10 are engaged with each other. An example is a structure in which the slit 4s is engaged with the projection 10d as well as the first tongue portions 10 of the closing portion 10.
In addition to this, a structure in which the closing portions 9 are engaged with each other may be used. In this case, various methods can be used as the method of engaging the overlapped closed portions 9 with each other. For example, a method using adhesion or a fastener may be used, or a structure in which slits or protrusions are formed in the outer lid portion 8 or the closing portion 9 and these are engaged may be used. For example, when bonding is used, the closing portion disposed on the lower side of the pair of overlapping closing portions is engaged with the outer lid portion 8 by bonding.
As described above, the engagement destination of the closing portion for closing the box may be a portion on the outer side in the Y direction with respect to the opposing second side wall portion 7.

Further, various configurations of the claw portion are conceivable. For example, the claw portion 2 of the second embodiment includes the claw portion insertion fold line 2y, but may not include this. However, if each claw portion 2 is provided with a claw portion insertion folding line 2y, the insertion operation of the claw portion 2 is easy, and the ease of assembly of the box is further improved. Moreover, the shape of the nail | claw part can mention tapered shapes, such as a triangle and a trapezoid other than a square. Also, as the shape of the outer edge located outside the inner lid outer 3 in the X direction, as in the fourth and eighth embodiments, the outer edge is directed from the outer edge in the Y direction toward the claw. You may make it an uphill inclination shape.
In addition, in the structure which does not use a nail | claw and a slit, there is an advantage that it is not necessary to form these at the time of blank material manufacture, and it is not necessary to engage these at the time of an assembly. Moreover, since the structure using a nail | claw and a slit is a structure where an inner cover assembly state is more stable and it is hard to disassemble, it is excellent in the assembly workability | operativity in each process after an inner cover process.

  As the shape of the outer peripheral edge of the folding part 12, various shapes are conceivable. For example, the outer peripheral edges of the first folding part 12a and the second folding part 12b may be all curved outwardly (curved shape).

  Further, the inner lid process in the fifth embodiment is an assembly procedure in which the inner lid constituting portion 12c is sandwiched between the inner lid inside 4 and the inner lid outside 3 arranged outside thereof. An assembly procedure may be used in which the inner lid component 12c is sandwiched between the inner lid exterior 3 arranged on the inner side. In the case of assembling using the latter procedure, the position of the slit is preferably 5y.

  Moreover, the space shape in the box of the box assembled from the blank material of the said Example is not restricted to a rectangular parallelepiped, A various shape can be employ | adopted. The shape other than the rectangular parallelepiped is, for example, a box shape in which the side walls 5 and 7 are inclined (tapered) with respect to the box bottom 6. Examples of such a shape include a quadrangular frustum shape. The quadrangular frustum shape includes an inverted quadrangular frustum shape (inverted quadrangular frustum shape) having an upper end opening area larger than the area of the box bottom 6 and an upright four having an upper end opening area smaller than the area of the box bottom 6. There is a truncated pyramid shape (tapered truncated pyramid shape).

  Moreover, the box external structure with which the blank material 1b etc. of 2nd Example is provided is not restricted to the blank material shown by each Example, It can apply to various blank materials. That is, the pair of outer lid parts 8, the handle part 10a, and the engaging tongue part 10b constituting the box external structure constitute a part of a blank material that can assemble a box having at least the side wall parts 5 and 7. If it is.

Claims (9)

A rectangular box bottom surrounded by opposite first bottom fold lines and opposite second bottom fold lines;
A pair of first side walls connected to the box bottom through each first bottom fold line;
A pair of second side wall portions connected to the box bottom portion via each second bottom fold line;
A folded portion that exists in a position between the side wall portions;
A pair of inner lids connected to the outside of each first side wall portion via a first wall upper fold line;
A pair of inner lid exteriors connected via an inner lid fold line to the outside of each inner lid,
A pair of outer lid parts that are connected to the outside of each second side wall part via the second wall upper fold line and are arranged outside the box outside the inner lid in a box assembly state,
A pair of closing portions connected to the outside of each outer lid portion,
Each folding part extends outward from the corner of the box bottom, folds into the folding part that bisects the folding part, and is on the first side wall part side with respect to the folding part folding line and is folded into the box when the box is assembled. A first folding part, a second folding part that is on the second side wall part side of the folding part folding line and is folded into the box when the box is assembled, and the end part of the first wall upper folding line A third wall upper fold line extending along an extension line of the fold line, and an inner lid constituting part connected to the outside of the first folding part via the third wall upper fold line,
The outside of the inner lid can be folded back to a position sandwiching the inner lid constituting part by cooperation with the inside of the inner lid when the box is assembled.
Each closing portion can be engaged with the other closing portion or an outer lid portion with which the other closing portion is connected at the time of assembling the box.   The first folding portion further includes an assembly folding line extending from an end of the first wall upper folding line so as to pass between the first side wall portion and the third wall upper folding line, and the assembly folding line. A first folding lower part surrounded by a folding line and the folding part folding line, and a first folding upper part located between the assembly folding line and the third wall upper folding line, 2. The blank material for assembling a box according to claim 1, wherein the constituent part is continuous with the upper part of the first folding. The outside of each inner lid is connected to the claw part via a claw part fold line,
The claw portion can be inserted between the inner lid constituting portion and the inner lid in a state where the inner lid constituting portion is sandwiched between the inner lid inside and the outer outer lid when the box is assembled. A blank for assembling a box according to claim 1 or 2. The inner lid constituting portion extends in an extending direction orthogonal to the third wall upper fold line via the third wall upper fold line, and extends from the end of the first wall upper fold line. Is separated from the inside of the inner lid through a separation cutting part extending to
The blank for assembling a box according to claim 3, wherein the inner lid constituting part includes a notch on a distal end side of a side edge adjacent to the separation cutting part, and the distal end part is narrow. Wood. Each of the closing portions includes a handle portion that is overlapped with each other when the box is assembled, a first cutting line for forming a through-hole portion inside the handle portion, and a first cutting line side from the outer lid portion. A projecting first tongue,
The blank material includes a handle part fold line when folding the handle parts stacked on each other with respect to the outer lid part, and the first tongue part and the An incision formed in a connection portion with the outer lid portion, and a communication portion that does not form the notch in the connection portion and connects the outer lid portion and the first tongue portion, and
A pair of first tongues of the pair of closed parts are engaged with each other by engaging a notch adjacent to one first tongue part with a communicating part adjacent to the other first tongue part when the box is assembled. The blank material for box assembly as described in any one of Claims 1-4 which has become. Each inner lid has a second tongue formed so as to protrude from the first side wall to the outer side of the inner lid by forming a cutting line therein.
Each second tongue includes a slit extending in a direction perpendicular to the first wall upper fold line,
Each said handle part is equipped with the protrusion (notch) for a latch with which the said slit is engaged at the time of a box assembly at the width direction both ends position of the said handle part, The box use for box assembly of Claim 5 Blank material. Each of the closing portions includes a covering portion that is overlapped on the outside of the box of the other outer lid portion that is connected to the other closing portion when the box is assembled.
Each covering portion includes a protruding portion that protrudes toward the other covering portion in the width direction in which the second wall upper fold line extends in a state of being overlapped on the outside of the box of the other outer lid portion. It is what
The blank material for box assembly according to claim 1, wherein the pair of projecting portions can be engaged with each other.   The blank material according to any one of claims 1 to 7, wherein a separation facilitating structure is formed at a position of the second wall upper fold line.   The box which assembled the blank material as described in any one of Claims 1-8.