JP2013001424A - Sealed box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sealed box in which an opening of an end of a tubular body is sealed in a stable manner not to be easily opened by simple structure and by simple steps using a sealing device.SOLUTION: In the sealed box 10, a sheet of a blank is folded to form a tubular body 11 including a pair of front and back face plates 11a, 11b, an insertion flap piece of a lid flap piece 17a continuously disposed at an end edge of one face plate 11a is inserted along an inner face of the other face plate 11b to close the opening 14 of the tubular body 11. The insertion flap piece has engagement pieces 19a, 19b extended outward from both side edges thereof, and the other face plate 11b has lock cutouts 20a, 20b formed at side edge corners thereof. A length L1 between tip edges of the lock pieces 19a, 19b on both sides of the insertion flap pieces is longer than a width L2 of the other face plate.

Description

  The present invention relates to a sealed box, and in particular, forms a cylindrical main body including a pair of front and rear front plates from a blank cut into a predetermined shape, and inserts an insertion flap piece of a lid flap piece into both ends of the cylindrical main body. The present invention relates to a sealed box that closes an opening and breaks a cutting guide wire to open and take out the contents.

  For example, as a packaging box for packaging cosmetics, medicines, confectionery, stationery, and other daily necessities, a blank, which is a sheet-like sheet material made of paper or plastic cut into a predetermined shape, is folded. What is assembled into a three-dimensional shape by bending along a line is often used. A packaging box using a blank generally accommodates the contents inside a cylindrical main body including a pair of front and rear front plates and side plates, and both ends of the cylindrical main body by lid flap pieces continuously provided with tip insertion flap pieces. The opening is closed by covering the opening.

  Moreover, in the packaging box which closed the opening part of the edge part of the cylindrical main body with the lid flap piece, it is possible to take out the contents by opening the lid flap piece, but the lid flap piece is opened and closed. For example, when the packaging box is displayed at a storefront, a person other than the purchaser may tamper with it by opening the packaging box or taking out the contents. For this reason, the lid flap piece covering the opening at the end of the cylindrical main body is not easily opened, and the opening of the packaging box is performed by using a cutting guide line formed by perforations provided around the packaging box. Various types of sealed boxes have been developed in which a function for preventing falsification can be obtained by making it possible to easily determine whether or not the packaging box has already been opened, as it is performed by breaking (see, for example, Patent Documents). 1, see Patent Document 2).

JP 2001-31062 A Utility Model Registration No. 3142471

  However, in the sealed box in which the falsification preventing function of Patent Literature 1 and Patent Literature 2 is obtained, the locking piece provided on the hook piece, the hook provided on the insertion piece, the cut line provided on the upper cover piece, The lid flap piece is not easily opened by the mechanical structure by engaging with the slit provided in the fold line between the front plate and the inner flap, but the configuration is not simple and the sealing device The sealing process when using is complicated. In particular, when the sealed box is formed using a paper blank, the locking piece or the insertion piece is pushed into the cut line or slit while being forced to engage them. There is a case where the tip engagement portion of the piece or the hook is crushed and the engagement with the cut line or the slit is loosened.

  The present invention provides a sealed box capable of sealing the opening of the end portion of the cylindrical main body in a stable state so as not to be easily opened by a simple configuration and a simple process using a sealing device. The purpose is to provide.

  The present invention forms a cylindrical main body including a pair of front and rear front plates disposed opposite to each other by folding a blank cut into a predetermined shape along a fold line, and any one of the front and rear front plates. While inserting the insertion flap piece of the lid flap piece provided continuously with the edge of one front plate along the inner surface of the other front plate, the opening at the end of the cylindrical body is closed, A sealing box that is opened by breaking the cutting guide wire to take out the contents, wherein the insertion flap piece is provided with a locking piece protruding outward from the side edge on both sides, Locking notches with which the locking pieces are engaged are provided at the side edge corners between the side plates on both sides adjacent to the front plate, and both sides of the insertion flap piece in the width direction are provided. The length between the end edges of the locking pieces is the other By providing a sealing box which is longer than the width of the locking notch provided portion of the front plate is obtained by achieving the above object.

  In addition, the present invention forms a cylindrical main body including a pair of front and rear front plates arranged opposite to each other by folding a blank cut into a predetermined shape along a folding line, and By inserting the insertion flap piece of the lid flap piece provided continuously to the edge of one of the front plates along the inner surface of the other front plate, the opening at the end of the cylindrical body is closed. And a sealing box that is opened by breaking the cutting guide wire to take out the contents, wherein the insertion flap piece is provided with a lock hole, and the other front plate is provided with the lock hole. The above object is achieved by providing a sealed box provided with a locking piece to be engaged.

  Furthermore, the present invention forms a cylindrical main body including a pair of front and back front plates arranged opposite to each other by bending a blank cut into a predetermined shape along a fold line, and Insert the lid flap piece of the lid flap piece that is connected to the edge of one of the front plates, the inner flap piece that is connected to the edge of the pair of side plates to the inside, and then the inside of the other front plate An opening box at the end of the cylindrical main body is closed by inserting along the side surface, and a sealing box that opens the container by breaking the cutting guide wire to take out the contents, and the insertion flap piece includes The above-mentioned object is achieved by providing a sealed box provided with a locking hole provided with a locking hole and protruding from an edge of the inner flap piece and engaged with the locking hole. It is.

  According to the sealing box of the present invention, the opening of the end portion of the cylindrical main body is sealed in a stable state so as not to be easily opened by a simple configuration and a simple process using the sealing device. Can do.

It is a perspective view explaining the structure of the sealed box which concerns on preferable one Embodiment of this invention. (A), (b) is a principal part perspective view explaining the structure of the sealed box which concerns on preferable one Embodiment of this invention. It is an expanded view of the blank for forming the sealed box which concerns on preferable one Embodiment of this invention. It is an expanded view of the blank for forming the sealed box which concerns on another preferable form. It is an expanded view of the blank for forming the sealed box which concerns on another preferable form.

  A sealed box 10 according to a preferred embodiment of the present invention shown in FIG. 1 and FIGS. 2A and 2B accommodates daily necessities such as cosmetics, medicines, confectionery, stationery, etc. This is a vertically long hexahedron-shaped packaging box. The sealing box 10 of this embodiment includes a cylindrical main body 11 including a pair of front and rear front plates 11a and 11b and a pair of left and right side plates 11c and 11d, and a top plate 12a and a bottom formed by lid flap pieces 17a and 17b described later. It is formed in a hexahedron shape composed of the face plate 12b. Moreover, the sealing box 10 of this embodiment is provided with the cutting guide wire 13 on the top plate 12a by the lid flap piece 17a, and the cutting guide wire 13 can be opened to open and take out the contents. ing. Furthermore, the sealing box 10 of the present embodiment has a function of firmly sealing the opening 14 at the end of the cylindrical main body 11 with a simple configuration without being easily opened.

  The sealing box 10 of the present embodiment is formed by bending, for example, a paper thin blank 15 made of paper, which is cut into a predetermined shape, as shown in FIG. 3 along a plurality of folding lines 16a and 16b. A cylindrical body 11 including a pair of front and rear front plates 11a and 11b arranged opposite to each other is formed (see FIGS. 1, 2A, and 2B), and one of the front and rear front plates 11a and 11b is formed. By inserting the insertion flap pieces 18a and 18b of the lid flap pieces 17a and 17b connected to the edge of the front plate along the inner surface of the other front plate, the openings 14 at both ends of the cylindrical main body 11 are formed. It is a packaging box which is closed and opened by breaking the cutting guide wire 13 to take out the contents. The insertion flap pieces 18a and 18b are provided with locking pieces 19a and 19b projecting outward from the side edge portions on both sides, and between the side plates 11c and 11d on both sides adjacent to the other front plate 11b. Locking notches 20a and 20b with which the locking pieces 19a and 19b are engaged are provided at the side edge corners, and the locking pieces 19a and 19b on both sides in the width direction of the insertion flap pieces 18a and 18b. The length L1 between the front edge portions is longer than the width L2 of the portion of the other front plate where the locking notches 20a and 20b are provided.

  In the present embodiment, at the side edge portions on both sides of the insertion flap pieces 18a, 18b, the locking pieces 19a, 19b are separated from the folding line 16b with the lid flap pieces 17a, 17b by a separation length a1, A2 is provided so as to be different from each other, and the locking notches 20a and 20b are provided on the locking piece 19a at the side edge corner portions between the side plates 11c and 11d on both sides adjacent to the other front plate 11b. , 19b, the separation lengths a1 and a2 from the edge of the opening 14 are shifted so as to be different from each other.

  The sealed box 10 of the present embodiment is formed using a single paper blank 15 as shown in FIG. The blank 15 can be easily obtained by punching and cutting, for example, a thin sheet of paper sheet material so as to have a predetermined shape obtained by developing the hexahedron-shaped sealed box 10. The blank 15 has a shape-retaining rigidity and elasticity that can easily hold a smoothly curved state without bending even when the side edge is gripped and horizontally extended in a cantilevered manner. Deformability that can be easily bent by force.

  In addition, the blank 15 is provided with an appropriate position such as a longitudinal fold line 16a or a lateral fold line 16b made of a half-cut line or a ruled line, or a cut 21 made of a whole cut line. The sealed box 10 can be easily assembled so as to have a hexahedral shape.

  In the blank 15 of the present embodiment, for example, vertically long rectangular side plates 11c and 11d are connected to both sides of a vertically long rectangular rear front plate 11a via vertical folding lines 16a. A vertically long, substantially rectangular front front plate 11b is connected to the side of the right side plate 11d in the developed view of FIG. 3 via a vertical folding line 16a. On the further side of the front front plate 11b, a vertically long strip-shaped joining plate 27 is continuously provided via a bending line 16a in the vertical direction.

  Above the rear front plate 11a, a top cover flap piece 17a is continuously provided via a lateral fold line 16b. A top surface insertion flap 18a is further provided above the top surface lid flap piece 17a via a lateral folding line 16b. In this embodiment, both end portions of the lateral fold line 16b between the top surface lid flap piece 17a and the top surface insertion flap 18a are known between the base end portion of the top surface inner flap piece 25a. A locking notch 22 that constitutes the locking mechanism is provided, and a collar part notch 24 for forming a collar part 23 serving as an operation starting part when the cutting guide wire 13 is broken is provided at the center part. Is provided.

  A bottom cover flap piece 17b is continuously provided below the front front plate 11b via a lateral fold line 16b. A bottom surface insertion flap 18b is continuously provided below the bottom surface cover flap piece 17b via a lateral fold line 16b. In addition, in this embodiment, it is well-known between the base end part of the flap piece 25b in the bottom face part at the both ends of the horizontal fold line 16b between the bottom face part lid flap piece 17b and the bottom face insertion flap 18b. A locking notch 22 that constitutes a locking mechanism is provided.

  Above the pair of side plates 11c and 11d, the flap portions 25a in the top surface portion are continuously provided via the lateral folding lines 16b. At the base end portion of the top surface inner flap piece 25a, there is provided a locking projection piece 26 that constitutes a known locking mechanism with the above-described locking cut 22. Under the pair of side plates 11c and 11d, an in-bottom flap piece 25b is connected via a lateral fold line 16b. At the base end portion of the bottom-surface inner flap piece 25b, a locking protrusion 26 is provided that constitutes a known locking mechanism with the above-described locking notch 22.

  An adhesive 28 is applied to the joining plate 27 that is provided continuously to the side of the front front plate 11b, and the joining plate 27 is connected to the inner side along the side edge of the side plate 11c via the adhesive 28. By joining to the side surface, a cylindrical shape having a rectangular hollow cross-sectional shape composed of a pair of front and rear front plates 11a and 11b and a pair of left and right side plates 11c and 11d that are bent along each longitudinal fold line 16a. A main body 11 is formed. In the present embodiment, a notch recess 29 is provided at the upper edge of the side plate 11c located on the side opposite to the bonding plate 27. When the cylindrical main body 11 is formed by joining the joining plate 27 to the inner side surface of the side plate 11c, the joining plate is connected to the longitudinal folding line 16a at the side edge corner portion between the front front plate 11b and the joining plate 27. 27, the first locking notch 20a formed by biting into the side wall 27 is caused to face the side plate 11c at the notch recess 29, so that the first locking notch 20a is moved to the front front plate 11b and the side plate 11c. Can be provided at the side edge corner.

  And in this embodiment, the top | upper surface part insertion flap piece 18a is arranged in a row above the back | front front plate 11a as one front board via the top | upper surface part lid | cover flap piece 17a, This top | upper surface part insertion flap piece 18a is provided with a first locking piece 19a and a second locking piece 19b projecting outward from the side edge portions on both sides. In the present embodiment, these locking pieces 19a, 19b are offset so that the separation lengths a1, a2 from the lateral fold line 16b with the top surface lid flap piece 17a are different. The locking piece with the shorter separation length a1 from the lateral fold line 16b is the first locking piece 19a, and the locking piece with the shorter separation length a2 from the lateral fold line 16b. The piece is a second locking piece 19b. In the present embodiment, the length L1 between the front edge portions of the first locking pieces 19a and the second locking pieces 19b on both sides in the width direction of the top surface insertion flap piece 18a is the other front plate. The front front plate 11b is longer than a width L2 of a portion where a first locking notch 20a and a second locking notch 20b described later are provided. Furthermore, in this embodiment, the front edge part of the 1st locking piece 19a and the 2nd locking piece 19b is the front end side part of the top | upper surface part lid | cover flap piece 17a via the curved corner | angular parts 30a and 30b which curve in circular arc shape. 31 is connected.

  In the present embodiment, the first locking piece of the top surface insertion flap piece 18a is formed at the side edge corner portion between the adjacent side plates 11c and 11d at the upper end of the front front plate 11b as the other front plate. There are provided a first locking notch 20a and a second locking notch 20b with which 19a and the second locking piece 19b are respectively engaged. In the present embodiment, these locking notches 20a and 20b correspond to the first locking piece 19a and the second locking piece 19b from the upper side 32 of the front front plate 11b that becomes the edge of the opening 14a. The separation lengths a1 and a2 are different from each other so that the separation length a1 from the upper side 32 is the shorter notch first locking notch 20a. The longer notch is a notch second locking notch 20b having a longer length a2. In the present embodiment, the locking notches 20a and 20b are respectively cut into a corner cut 33a cut along the longitudinal fold line 16a, and bent into an L shape from the upper end of the corner cut 33a, and the side plates 11c, It is formed in a bowl shape composed of an L-shaped cut 33b provided by biting into 11d. Note that the locking notches 20a and 20b can be provided by, for example, notched openings formed by opening into the side plates 11c and 11d from a portion along the vertical folding line 16a.

  In the present embodiment, when the top surface insertion flap piece 18a is inserted along the inner surface of the front front plate 11b, which is the other front plate, using a known sealing device such as cartoner, the top surface portion The insertion flap piece 18a is inserted diagonally, and the first locking piece 19a having a shorter distance a1 from the lateral fold line 16b between the top surface lid flap piece 17a and the first locking notch 20a is inserted. When the top surface insertion flap piece 18a is rotated around these engaging portions (see FIG. 2 (a)), the lateral folding line between the top surface portion flap flap piece 18a The tip edge portion of the second locking piece 19b having the longer separation distance a2 from 16b can pass through the inside of the corner portion of the front front plate 11b and the side plate 11d in the opening 14 at the upper end. , Each locking piece 19a, 19b Fine locking notches 20a, 20b are provided.

  That is, the inner side of the corner between the front front plate 11b and the side plate 11d in the opening 14 from the upper end of the corner notch 33a which is the engagement base end of the first locking notch 20a having the shorter separation length a1. And the length from the engagement base end of the first locking piece 19a having the shorter separation length a1 to the distal end edge of the second locking piece 19b having the longer separation length a2 The locking pieces 19a and 19b and the locking notches 20a and 20b are provided in a positional relationship such that s2 substantially matches.

  On the other hand, in this embodiment, the bottom surface insertion flap piece 18b is continuously provided with a bottom surface lid flap piece 17b interposed below the front front plate 11b as one front plate, and this bottom surface insertion flap piece. Similarly to the above-described top surface insertion flap piece 18a, the first locking piece 19a and the second locking piece 19b projecting outward from the side edge portions on both sides are connected to the bottom surface lid flap piece 17b. The distances from the lateral fold line 16b are different from each other so as to be different from each other. Further, the length between the front edge portions of the first locking piece 19a and the second locking piece 19b on both sides in the width direction of the bottom surface insertion flap piece 18a is the length of the rear front plate 11b as the other front plate. It is longer than the width of the portion where the first locking notch 20a and the second locking notch 20b are provided.

  In the present embodiment, the bottom edge portion between the side plates 11c and 11d on both sides adjacent to each other at the lower end portion of the rear front plate 11a as the other front plate is a bottom surface similarly to the front front plate 11b described above. The first locking notch 20a and the second locking notch 20b with which the first locking piece 19a and the second locking piece 19b of the partial insertion flap piece 18b are respectively engaged are the first locking piece 19a and the second locking piece 19a. Corresponding to the two locking pieces 19b, the separation lengths from the lower side 34 of the rear front plate 11b, which is the edge of the opening 14a, are different from each other.

  Moreover, in this embodiment, between the 1st locking piece 19a and the 2nd locking piece 19b provided in the bottom face part insertion flap piece 18b, and the side plates 11c and 11d of the both sides which the back front board 11a adjoins. The first locking notch 20a and the second locking notch 20b provided in the side edge corner portion are the first locking piece 19a and the second locking piece 19b provided in the top surface insertion flap piece 18a, Similar to the first locking notch 20a and the second locking notch 20b provided at the side edge corners between the side plates 11c and 11d on both sides adjacent to the front front plate 11b, the separation length is short. Length s1 from the engagement base end of the first locking notch 20a to the inner corner of the rear front plate 11a and the side plate 11d in the opening, and the first locking with the shorter separation length The tip of the second locking piece 19b whose separation length is longer from the engagement base end of the piece 19a Each is provided in a positional relationship such that the length s2 to the end edge portion substantially matches.

  The sealed box 10 of the present embodiment is assembled using the blank 15 described above, and is commercialized in a state in which the contents are enclosed and accommodated. That is, in order to obtain the sealed box 10 containing the contents, as described above, after the tubular body 11 is formed by joining the joining plate 27 to the inner surface of the side plate 11c, the lower end of the tubular body 11 is formed. The bottom plate 12b is formed by closing the opening with a pair of bottom surface portion flap pieces 25b and a bottom surface portion insertion flap piece 18b. The bottom plate 12b can be easily formed by a method similar to the method of forming the top plate 12b described later, preferably by a simple process using a sealing device (cartner).

  When the bottom end plate 12b is formed by closing the opening at the lower end of the cylindrical main body 11, after the accommodation is received from the opening 14 at the upper end, as shown in FIG. 1, FIG. 2 (a), (b), The opening 14 is closed by using a pair of top surface inner flap pieces 25a and a top surface lid flap piece 17a to form the top plate 12a. In order to form the top surface plate 12a, preferably, a sealing device (cartner) is used to fold the top surface portion flap pieces 25a on both sides inwardly, and then the top surface portion insertion flaps continuously provided on the top surface portion lid flap pieces 17a. The piece 18a is inserted along the inner surface of the front front plate 11b as the other front plate. In this insertion process, as in the method using the conventional sealing device, the top surface insertion flap piece 18a starts to be inserted from an inclined state, so that the first engagement provided on the side edges on both sides thereof The stop piece 19a and the second lock piece 19b are respectively engaged with the first lock notch 20a and the second lock notch 20b provided at the side edge corners on both sides of the front front plate 11b (FIG. 2). (Refer to (a) and (b)).

  That is, after the top surface insertion flap piece 18a is inserted obliquely and the first locking piece 19a is engaged with the first locking notch 20a, the top surface insertion flap piece 18a is centered on these engaging portions. If the portion on the side where the second locking piece 19b is provided is rotated in the insertion direction, the second locking piece 19b is slightly deformed at its front edge, while the front front plate at the opening 14 is deformed. 11b and the side plate 11d smoothly pass along the inside of the corner from the inside of the corner to the second locking notch 20b provided at the side edge corner of the front front plate 11b and the side plate 11d. , Engage with the second locking notch 20b. Thus, when the upper end opening 14 is closed by the top cover flap piece 17a, the first engagement piece 19a and the second engagement piece 19b are protruded on both sides of the front front plate 11b, and the first engagement member It is engaged with the notch 20a and the second locking notch 20b firmly and stably. In addition, this makes it difficult to open the top surface lid flap piece 17a by pulling out the top surface insertion flap piece 18a, and the top plate 12a is opened by the top surface lid flap piece 17a. This is done by breaking the cutting guide wire 13 provided at 17a.

  Therefore, according to the sealing box 10 of the present embodiment, the opening 14 at the end of the cylindrical main body 11 is stably prevented from being easily opened by a simple configuration and a simple process using the sealing device. It becomes possible to seal in the state.

  Further, according to the present embodiment, the locking pieces 19a and 19b on both sides of the tip insertion flap pieces 18a and 18b have the separation lengths a1 and a2 from the folding line 16b between the lid flap pieces 17a and 17b. The locking notches 20a and 20b on both sides of the other front plate 11b are spaced apart from the edge of the opening 14 in correspondence with the locking pieces 19a and 19b. , A2 are provided so as to be different from each other, so that the amount by which the length L1 between the front end edges of the locking pieces 19a, 19b on both sides is longer than the width L2 of the other front plate is considerably increased. It is possible to increase the size, and thereby it is possible to seal the opening 14 at the end of the cylindrical main body 11 in a stronger and stable state.

  The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, the blank for forming the sealed box is not necessarily a paper blank, and may be a plastic blank. Also, the locking pieces on both sides of the tip insertion flap piece are provided so as to be different from each other in the separation length from the folding line, or the locking notches on both sides of the other front plate are provided from the edge of the opening. It is not always necessary to provide them with different separation lengths. For example, when a plastic blank is used, since the locking pieces on both sides of the tip insertion flap piece have a considerable shape retaining rigidity, the length between the tip edges of the locking pieces on both sides is set to the other front plate. Even when the locking piece is engaged with the locking notch by forcibly pushing the front-end insertion flap piece and making the locking piece engage with the locking notch, the locking piece can easily retain its shape. Therefore, it is possible to seal the cylindrical main body in a firm and stable state by causing the locking pieces to protrude from both sides of the front plate by a considerable amount of protrusion.

  FIG. 4 shows the development of a blank 40 for forming a sealed box according to another embodiment, which enables the opening at the end of the tubular body to be sealed in a stable state so as not to be easily opened. FIG. In the blank 40 shown in FIG. 4, substantially the same as the blank 15 shown in FIG. 3, a rear front plate 41a, a front front plate 41b, and a pair of sections are defined by a vertical fold line, a horizontal fold line, and a complete cut line. Side plate 41c, 41d, top face lid flap piece 42a, bottom face lid flap piece 42b, top face insert flap piece 43a, bottom face insert flap piece 43b, a pair of top face flap pieces 44a, a pair of bottom face flap pieces 44b, a joining plate 45, and the like. Further, the top surface insertion flap piece 43a and the bottom surface insertion flap piece 43b are provided with a lock hole 47 as a locking portion, and the top surface lid flap piece 42a is provided with a cutting guide line 48 by a perforation or the like. Is provided. Further, a locking piece 46 is provided by making a cut at the lower end of the rear front plate 41a and the upper end of the front front plate 41b.

  In the sealed box formed using the blank 40 of FIG. 4, when formed into a hexahedron shape including a pair of front and rear front plates 41a and 41b arranged to oppose each other, the top surface insertion flap piece 43a is formed. Or by engaging the locking hole 47 of the bottom surface insertion flap piece 43b with the locking piece 46 of the rear front plate 41a or the front front plate 41b, the top end opening flap opening is opened by pulling out the top surface insertion flap piece 43a. In addition, it is possible to open the top plate with the top cover flap piece 42a by breaking the cutting guide line 48 provided on the top cover flap piece 42a.

  FIG. 5 also shows a blank 50 for forming a sealed box according to another embodiment, which makes it possible to seal the opening at the end of the cylindrical body in a stable state so as not to be easily opened. FIG. In the blank 50 shown in FIG. 5, substantially the same as the blank 15 shown in FIG. 3, a rear front plate 51a, a front front plate 51b, and a pair of lines are defined by a vertical fold line, a horizontal fold line, and a complete cut line. Side plate 51c, 51d, top surface lid flap piece 52a, bottom surface lid flap piece 52b, top surface insertion flap piece 53a, bottom surface insertion flap piece 53b, a pair of top surface flap pieces 54a, a pair of bottom surface flap pieces 54b, a joining plate 55, and the like. Further, the top surface insertion flap piece 53a and the bottom surface insertion flap piece 5b are provided with locking holes 57a and 57b as locking portions, and the top surface lid flap piece 52a has a cutting guide line by a perforation or the like. 58 is provided. Further, a locking piece 46a is provided on the outer edge of the top surface inner flap piece 54a so as to protrude outward, and a locking piece 46b is provided on the inner edge of the bottom surface inner flap piece 54b. Each pair is provided.

  In the sealed box formed using the blank 50 of FIG. 5, when formed into a hexahedron shape including a pair of front and rear front plates 51a and 51b that are opposed to each other and contain the contents, the top surface insertion flap piece 53a. Or by engaging the locking holes 57a and 57b of the bottom surface insertion flap piece 53b with the locking pieces 56a and 56b of the top surface inner flap piece 54a and the bottom surface inner flap piece 54b, and pulling out the top surface insertion flap piece 53a. Then, it is difficult to open the opening at the upper end, and the top plate is opened by the top cover flap piece 52a by breaking the cutting guide wire 58 provided on the top cover flap piece 52a. Is possible.

DESCRIPTION OF SYMBOLS 10 Sealing box 11 Cylindrical main body 11a Back front board 11b Front front board 11c, 11d Side board 12a Top plate 12b Bottom board 13 Cutting guide wire 14 Opening part 15 Blank 16a Longitudinal folding line 16b Lateral folding line 17a Top surface part Lid flap piece 17b Bottom face lid flap piece 18a Top face insertion flap piece 18b Bottom face insertion flap piece 19a First locking piece 19b Second locking piece 20a First locking notch 20b Second locking notch 25a Top face portion Inner flap piece 25b Bottom flap portion inner flap piece 27 Joint plate 32 Upper side of front front plate (edge of opening)

Claims (5)

A blank body cut into a predetermined shape is bent along a fold line to form a cylindrical body including a pair of front and rear front plates disposed opposite to each other, and one of the front and rear front plates. By inserting the insertion flap piece of the lid flap piece provided continuously to the end edge portion along the inner side surface of the other front plate, the opening at the end of the cylindrical body is closed and the cutting guide wire is It is a sealed box that is opened by breaking and takes out the contents,
The insertion flap piece is provided with a locking piece projecting outward from the side edge portions on both sides, and the side edge corner portion between the side plates on both sides adjacent to the other front plate has the A locking notch to which the locking piece is engaged is provided,
And the length between the front-end | tip edge parts of the said locking piece of the both sides in the width direction of the said insertion flap piece is longer than the width | variety of the part in which the said locking notch of the said other front plate was provided. Sealed box.   At the side edge portions on both sides of the insertion flap piece, the locking piece is provided so as to be shifted from the folding line with the lid flap piece so as to be different from each other, and the other front plate In the side edge corner portions between the side plates adjacent to each other, the locking notch is shifted so that the separation length from the edge of the opening is different in correspondence with the locking piece. The sealed box according to claim 1 provided.   When the insertion flap piece is inserted along the inner side surface of the other front plate, the insertion flap piece is inserted obliquely, and the separation distance from the folding line between the insertion flap piece and the lid flap piece is short. After the engaging piece is engaged with the engaging notch, when the insertion flap piece is rotated around these engaging portions, it is separated from the folding line with the lid flap piece. The engagement member with the shorter separation length is such that the front end edge of the longer locking piece can pass through the inside of the corner of the other front plate and the side plate at the opening. The length from the engagement base end of the notch to the inside of the corner and the tip of the locking piece having a longer separation length from the engagement base end of the locking piece having a shorter separation length Each of the locking pieces and the locking notches are in a positional relationship such that the length to the edge is substantially matched. Sealing box according to claim 2, wherein is provided. A blank body cut into a predetermined shape is bent along a fold line to form a cylindrical body including a pair of front and rear front plates disposed opposite to each other, and one of the front and rear front plates. By inserting the insertion flap piece of the lid flap piece provided continuously to the end edge portion along the inner side surface of the other front plate, the opening at the end of the cylindrical body is closed and the cutting guide wire is It is a sealed box that is opened by breaking and takes out the contents,
A sealing box in which the insertion flap piece is provided with a lock hole, and the other front plate is provided with a locking piece with which the lock hole is engaged. A blank body cut into a predetermined shape is bent along a fold line to form a cylindrical body including a pair of front and rear front plates disposed opposite to each other, and one of the front and rear front plates. Insert the flap piece of the lid flap piece that is connected to the edge of the inner side, and the inner flap piece that is connected to the edge of the pair of side plates to the inside, and then insert it along the inner side of the other front plate. The opening of the end portion of the cylindrical body is closed, and a sealing box that opens the container by breaking the cutting guide wire and takes out the contents,
A sealing box in which a lock hole is provided in the insertion flap piece, and an engagement piece that protrudes from an edge of the inner flap piece and engages with the lock hole is provided.

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