JP2008094414A - Carton - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carton capable of preventing any disturbance of inclination and collapse of stacked folded blank sheets when they are stacked after being folded and glued. <P>SOLUTION: A thickness adjustment part 70 is provided, and is used for adjusting the thickness difference between the thickness on the side to which the upper flaps 41, 42, 43, 44 are glued and the thickness on the opposite side if the thickness of the blank sheets is larger on the side to which the upper flaps 41, 42, 43, 44 are glued than that on the opposite side, in the folded state before a body part 30a is erected. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a carton in which a blank sheet cut by putting a ruled line on a paperboard is bent along the ruled line and bonded with an adhesive.

  Conventionally, as a container for storing powder (contents) such as powder detergent, a carton is used, which is made by folding a blank sheet cut into a paperboard along a ruled line and bonding it with an adhesive. ing. Some of these cartons have a type in which the powder detergent is taken out from the spout provided on the side plate, but in recent years, the lid covering the top opening of the container body can be opened and closed to make the container more compact and improve usability. A type that can be attached to and can be taken out by measuring the powder detergent inside with a measuring spoon.

Also, when assembling a carton, a blank sheet is usually punched out into a predetermined shape from a paperboard that has been subjected to surface treatment such as printing or ruled line processing for placing a ruled line by a packaging material manufacturer. This blank sheet has a main body panel in which four side plates and one glue margin are sequentially connected with a ruled line in between.
Next, after folding the main body panel of this blank sheet along the ruled line by bending, the other side plate is adhered to the glue margin connected to the one side plate of the main body panel with an adhesive. Thus, a cylindrical body is formed (referred to as sack pasting). Here, the blank sheet after the sack is applied is sent to the next step with the body part folded in a flat shape.
In the next step, after the body part folded in a flat shape is opened in a rectangular tube shape, the sealing part connected to the bottom side of the body part is folded and attached with an adhesive, thereby the body part. Seal the bottom opening. Thereby, a container main body is produced. And after filling this manufactured container main body with powder detergent, it is finished as a carton containing powder detergent by sealing the upper surface opening part of a container main body with the cover body attached to the trunk | drum.

  By the way, in a carton having such a container main body and a lid, the upper surface of the trunk is increased in order to increase the strength in the vicinity of the upper surface opening of the container main body covered with the lid and the strength in the vicinity of the attachment of the lid to the container main body. A reinforcing flap is connected to the side, the flap is folded back to the inside of the body portion, and is adhered to the inner surface of the side plate with an adhesive.

  However, when the vicinity of the upper surface opening of the container main body is reinforced by such a flap, the container main body is folded in a flat shape before the trunk is opened, and the side to which the reinforcing flap is attached is attached. Is thicker by the thickness of the folded flap than the plate thickness on the opposite side. Specifically, when the body is folded flat before opening, the difference in plate thickness is doubled between the upper surface side of the body portion where four paperboards overlap and the bottom surface side of the body portion where two paperboards overlap. It has become. In this case, as shown in FIG. 9, when the blank sheets 100 folded in a flat shape are stacked, as the number of stacked blank sheets 100 increases, the upper portion is inclined obliquely toward the bottom surface side of the trunk portion. .

  Here, the blank sheet sent from the packaging material manufacturer described above is packed and transported in a shipping box in a folded state so as not to be bulky until the body is opened and filled with powder detergent. . However, in the case of the carton in which the above-described difference in plate thickness occurs, the stacked blank sheets are inclined obliquely, resulting in a very unstable state such as collapse in the transport box.

  Further, in the case of the carton in which the plate thickness difference described above occurs, as shown in FIG. 10, when the blank sheet 100 folded flat is aligned in the transport box 101, the blank sheet 100 is tilted in the transport box 101. For this reason, the alignment state is disturbed. Further, since the blank sheet 100 folded in a flat shape has a restoring force to return to the original state from the folded state (referred to as spring back), a part of the blank sheet 100 is transported by the spring back. Problems such as rising up in 101 occur.

  As described above, when the alignment state of the blank sheet is disturbed, the blank sheet cannot be promptly supplied to the next process. In addition, manpower is required to adjust the alignment state of the blank sheets, and a complicated apparatus configuration is required, resulting in an increase in cost. On the other hand, in order to prevent the above-described disorder of the alignment state of the blank sheets, it is conceivable to provide a partition plate in the transport box. However, since the number of blank sheets that can be packed in the transport box at a time is reduced, the transport efficiency is also improved in this case. This will lead to an increase in cost.

In addition, there exists the following patent document 1 as a well-known literature relevant to this invention.
Specifically, in Patent Document 1, a crease that becomes a fold line when a sack is pasted is constituted by a crease having a crushing rule in the middle of the main ruled line, and the crushing rule is parallel to the main ruled line. A paper carton composed of two straight portions and a connecting portion that connects these straight portions and the main ruled line in a Y shape is described.
This Patent Document 1 describes a configuration similar to the “thickness adjusting portion” of the present invention called “crushed rule” described above. However, the purpose of this “crushing rule” is “to make it easy to open a blank made with a sack pasting method” and “to be sure to fold at a crease in a blank made with a lapland method” It is what.
Therefore, the “crushing rule” described in Patent Document 1 has a purpose of forming (the paper carton described in Patent Document 1 does not cause a difference in plate thickness in the first place), a position where the paper is formed, and the like. (In the paper carton described in Patent Document 1, the crushing rules are evenly arranged on the folding rules.) This is completely different from the “thickness adjusting portion” of the present invention. That is, the “crushed rule” is based on a technical idea completely different from the “thickness adjusting unit” of the present invention, and cannot be an effective means for solving the problems of the present invention.
JP-A-8-301266

  The present invention has been proposed in view of such conventional circumstances, and even when the sheet thickness difference occurs in the folded blank sheet after the sack is applied, the folded blank sheets are stacked. It is an object of the present invention to provide a carton that can be stored in a stable state in a shipping container.

  In order to achieve this object, the invention according to claim 1 includes a blank sheet that is cut with a ruled line on a paperboard, and the blank sheet includes four side plates that are sequentially adjacent to each other across the first ruled line, A main body panel in which a side plate at one end and an adhesive margin adjacent to one end of the ruled line are sequentially connected in a direction orthogonal to the first ruled line, and a second ruled line along one side orthogonal to the first ruled line of the main body panel An upper surface flap connected to the side plate across the side plate, and a bottom surface flap connected to the side plate across a third ruled line along the other side perpendicular to the first ruled line of the main body panel. The panel is bent along the first ruled line, and the side plate at the other end is attached to the glue margin to form a cylindrical trunk, and the upper surface flap is folded back inside the trunk along the second ruled line. Affixing to the inner surface of the side plate, The container body is configured by folding the bottom flap along the third ruled line after sealing and sealing the bottom opening of the barrel, and the container body raises the barrel. In the folded state before boxing, the plate thickness on the side where the upper surface flap is adhered is made larger than the plate thickness on the opposite side, and the main panel is attached to the side where the upper surface flap is adhered And a carton characterized in that a thickness adjusting portion for adjusting a difference in plate thickness between the opposite side and the opposite side is provided.

  The invention according to claim 2 is the carton according to claim 1, wherein the thickness adjusting portion is provided on a side opposite to the side on which the upper surface flap is attached. is there.

Moreover, the invention which concerns on Claim 3 is provided with the said thickness adjustment part on the two 1st ruled lines located in the both ends of the trunk | drum folded before the said boxing, respectively, and the said 1st ruled line is parted. Forming a thickness region and having a fourth ruled line defining the thickness region;
The thickness region has a thickness corresponding to the plate thickness difference in a direction orthogonal to the first ruled line when the main body panel is bent along the fourth ruled line. In the carton.

  The invention according to claim 4 is the carton according to claim 3, wherein the thickness region is partitioned by a fourth ruled line that is discontinuous with the first ruled line.

  The invention according to claim 5 is the carton according to claim 3 or 4, wherein a fifth ruled line orthogonal to the first ruled line is formed in the thickness region.

  The invention according to claim 6 is the carton according to any one of claims 3 to 5, wherein the thickness region is formed by ruled line processing or deboss processing.

  The invention according to claim 7 is the carton according to claim 1 or 2, wherein the thickness adjusting portion is a convex portion provided on a side plate to which the upper surface flap is attached.

  The invention according to claim 8 is the carton according to claim 7, wherein the convex portion is formed by embossing.

  The invention according to claim 9 is the carton according to any one of claims 1 to 8, further comprising a lid that covers the upper surface opening of the container body.

  As described above, in the carton according to the present invention, when the folded blank sheets are stacked by providing a thickness adjusting portion that adjusts the plate thickness difference between the side on which the upper surface flap is adhered and the opposite side thereof Can be stored in a stable state in a shipping container.

Hereinafter, a carton to which the present invention is applied will be described in detail with reference to the drawings.
(First embodiment)
First, a carton 1 shown in FIG. 1 will be described as a first embodiment.
As shown in FIG. 1, the carton 1 is a paper container that contains a powder detergent as a content, a container main body 2 that forms a storage space for containing the powder detergent, and an upper surface opening of the container main body 2. And a lid 3 for covering the inside, and the powder detergent inside can be measured and taken out by a measuring spoon (not shown).

  As shown in FIG. 2, the container body 2 is assembled by folding a blank sheet 20 formed by putting a ruled line on a paperboard and cutting it into a predetermined shape, and bonding the sheet together with an adhesive. The blank sheet 20 is made of, for example, a paperboard having a thickness of about 0.6 to 1.0 mm using paper as a main component and using a resin in a part of the laminated layer structure. The blank sheet 20 is printed on the surface.

  The blank sheet 20 includes four side plates 31, 32, 33, and 34 that are sequentially adjacent to each other across the first ruled line L1, and a glue margin 35 that is adjacent to the one side plate 31 across the first ruled line and the first ruled line L1. The main body panel 30 sequentially connected in the orthogonal direction, and the four connected to the side plates 31, 32, 33, 34 across the second ruled line L2 along one side orthogonal to the first ruled line L1 of the main body panel 30. Four bottom surfaces connected to the side plates 31, 32, 33, and 34 with the top surface flaps 41, 42, 43, and 44 and the third ruled line L3 along the other side orthogonal to the first ruled line L1 of the main body panel 30 being sandwiched. And flaps 51, 52, 53, 54.

  As shown in FIG. 1, the main body panel 30 bends the side plates 31, 32, 33, 34 and the glue margin 35 along the first ruled line L 1, and attaches the other side plate 34 to the glue margin 35 with an adhesive. Then, a pair of side plates (referred to as main panels) 31 and 33 constituting the back surface and the front surface of the container body 2 and a pair of side plates (referred to as side panels) 32 and 34 constituting both side surfaces are made to face each other. To form a rectangular tube-shaped body 30a. In addition, the body 30a has a pair of main panels 31 and 33 forming a rectangle whose width is wider than that of a pair of side panels 32 and 34 which also form a rectangle, and an upper surface forming a rectangle on the upper surface side thereof. It has an opening 30b and a bottom opening 30c having a rectangular shape on the bottom side.

  As shown in FIGS. 1 and 2, the rear main panel 31 is provided with a hinge portion 36 for attaching the lid 3 in an openable and closable manner. The hinge portion 36 is formed by making a cut along the contour in the main panel 31. Further, the hinge portion 36 has an upward convex shape, and can be bent along a perforated ruled line 35a formed at the lower end thereof. The front main panel 33 is provided with an insertion port 37 into which a lock piece 62 of the lid 3 to be described later is inserted. The insertion port 37 is formed by punching out the main panel 33 along the contour.

  The upper surface flaps 41, 42, 43, and 44 are reinforcing flaps for reinforcing the vicinity of the upper surface opening 30b of the trunk portion 30a, and are provided extending from the upper end portions of the side plates 31, 32, 33, and 34. ing. Moreover, the 2nd ruled line L2 consists of the half cut line cut | notched from the surface side of the blank sheet 20 to the thickness of about half of paperboard.

  As shown in FIG. 1, the container body 2 has upper surface flaps 41, 42, 43, 44 folded back inside the trunk portion 30 a along the second ruled line L <b> 2, and adhesive on the inner surfaces of the side plates 31, 32, 33, 34. By sticking on the container body 2, it is possible to increase the strength in the vicinity of the upper surface opening 30 b of the container body 2 (body 30 a) on which the lid body 3 is covered and the strength in the vicinity of the attachment of the lid body 3 to the container body 2. ing. Note that the front and back upper surface flaps 41 and 43 are folded over the hinge portion 36 and the insertion port 37 described above when folded back inside the trunk portion 30a along the second ruled line L2.

  The lower surface flaps 51, 52, 53, and 54 are sealing flaps for sealing the bottom surface opening 30c of the trunk portion 30a. Specifically, the lower surface flaps 51, 52, 53, and 54 are a pair of extended from the lower ends of the side panels 32 and 34. It is comprised from the side flaps 52 and 54 and a pair of main flaps 51 and 53 extended from the lower end part of the main panels 31 and 33. FIG.

  Embossed portions 55a and 55b are formed in the pair of side flaps 52 and 54, respectively. The embossed portions 55a and 55b have a stepped outline, and a region where the main flap 53 on the front side is folded is convex toward the surface. Accordingly, a region where the embossed portions 55a and 55b are not formed, that is, a region where the main flap 51 on the front side is folded is relatively low by the thickness of the embossed portions 55a and 55b. Further, the thickness of the embossed portions 55 a and 55 b corresponds to the thickness of the main flap 51. The main flap 51 on the front side is formed with a pair of notches 56a and 56b corresponding to the embossed portions 55a and 55b. The pair of notches 56a and 56 are notched in a step shape along the outline of the embossed portions 55a and 55b described above.

  As shown in FIG. 1, the container body 2 is formed by bending a pair of side flaps 52 and 54 along the third ruled line L3 and then bending the back side main flap 51 along the third ruled line L3. Folded to the flaps 52 and 54 and adhered with an adhesive, and further folded to the pair of side flaps 52 and 54 and the main flap 51 on the back side while bending the main flap 53 on the front side along the third ruled line L3. By sticking with an adhesive, the bottom opening 30c of the body 30a can be sealed.

  Further, when the back side main flap 51 is folded on the pair of side flaps 52 and 54, the embossed portions 55a and 55b and the back side main flap 51 have substantially the same height. Thereby, the main flap 53 on the front side can be folded on a flat surface formed between the embossed portions 8a, 8b and the main flap 51 on the back side, and adhered with an adhesive.

  As shown in FIG. 1, the lid 3 is assembled by folding a blank sheet (not shown) formed by cutting a paper sheet into a predetermined line and cutting it into a predetermined shape, and bonding it together with an adhesive. It has been. In addition, the blank sheet which comprises the cover body 3 consists of a paperboard of the same material as the said blank sheet 20. FIG.

  The lid 3 has a rectangular top plate 3a and four side plates 3b, 3c, 3d, 3e connected to the four sides of the top plate 3a so as to be foldable, and a pair constituting the back and front thereof. The side plates 3b, 3d and a pair of side plates 3c, 3e constituting both side surfaces thereof face each other, and a pair of adhesive margins 3f connected to the side plates 3c, 3e in a foldable manner are respectively provided on the inner surfaces of the side plates 3c, 3e. It is comprised by sticking with an adhesive agent. And this cover 3 is attached to the container main body 2 so that opening and closing is possible by sticking the inner surface of the side plate 3b to the said hinge part 36 with an adhesive agent in the state which covered the upper surface part of the said container main body 2. FIG.

  The lid 3 is provided with a lock mechanism 60 for fixing to the container body 2. The lock mechanism 60 includes a knob 61 that is operated when the lid 3 is fixed to the container body 2, and a gap between the side plate 33 and the upper surface flap 43 from the insertion port 37 while operating the knob 61. And a lock piece 62 to be inserted into the.

  Specifically, the knob piece 61 protrudes downward from the center of the lower end portion of the side plate 3d and can be bent along a pair of ruled lines 61a located on both sides of the lock piece 62. On the other hand, the lock piece 62 is located inside the knob piece 61 and has a convex shape upward from a line connecting the pair of ruled lines 61a. The lock piece 62 is formed by making a cut along the contour of the side plate 3d.

  In this locking mechanism 60, the knob 3 is lifted, and the lid 3 is lowered by a so-called squeeze hook that lowers the knob 61 while inserting the lock piece 62 into the gap between the side plate 33 and the upper surface flap 43 from the insertion port 37. It can be fixed to the container body 2.

Next, the manufacturing process of the carton 1 will be described.
When the carton 1 is manufactured, a blank sheet 20 that is die-cut into the above-described shape is usually produced from a paperboard that has been subjected to surface treatment such as printing or ruled line processing for placing a ruled line by a packaging material manufacturer. .

  Next, the upper surface flaps 41, 42, 43, and 44 of the blank sheet 20 thus punched out are folded back inside the trunk portion 30a along the second ruled line L2, and bonded to the inner surfaces of the side plates 31, 32, 33, and 34. Adhere with an agent. Next, of the four side plates 31, 32, 33, 34 constituting the main body panel 30, between the adhesive margin 35 and the back main panel 31 and between one side panel 32 and the front main panel 33. The first ruled line L1 between the main panel 31 on the back side and one side panel 32 and between the main panel 33 on the front side and the other side panel 34 after being bent along the first ruled line L1. And the other side panel 34 is adhered to the adhesive margin 35 of the main body panel 30 with an adhesive to form a cylindrical body portion 30a (referred to as sack pasting).

  Here, as shown in FIG. 3, the blank sheet 20 after the sack pasting is packed in a transport box (not shown) with the trunk portion 30 a folded in a flat shape and sent to the next process. . In the next process, after the trunk portion 30a folded flat is raised into a rectangular tube shape, the pair of side flaps 52 and 54 are folded along the third ruled line L3, and then the main flap 51 on the back side is moved to the first side. While folding along the three ruled lines L3, the pair of side flaps 52, 54 is folded and pasted with an adhesive, and the front side main flap 53 is folded along the third ruled line L3 while being folded along the third ruled line L3. 54 and the main flap 51 on the back side are folded and adhered with an adhesive. Thereby, the container main body 2 in which the bottom opening 30c of the trunk portion 30a is sealed is produced.

  And after filling this manufactured container main body 2 with powder detergent, the cover body 3 is stuck to the hinge part 36 with an adhesive agent, and the upper surface opening part 30b of the container main body 2 (torso part 30a) is covered with the cover body 3. Seal. Thereby, it is finished as a carton containing powder detergent. The blank sheet 20 is provided with ruled lines 38 for facilitating folding when the empty container body 2 is discarded, as shown in FIG.

  By the way, in the carton 1 to which the present invention is applied, the vicinity of the upper surface opening 30b of the container body 2 is reinforced by the upper surface flaps 41, 42, 43, and 44, and the blank sheet 20 before the trunk 30a is opened is provided. In the state folded in a flat shape, the thickness of the upper surface flaps 41, 42, 43, 44 where the plate thickness on the side where the upper surface flaps 41, 42, 43, 44 are attached is folded more than the plate thickness on the opposite side. It is thicker than the thickness.

  Therefore, in the carton 1 to which the present invention is applied, as shown in FIGS. 1 and 2, the difference in plate thickness between the side where the upper surface flaps 41, 42, 43 and 44 are attached and the opposite side is adjusted. A thickness adjusting unit 70 is provided.

  Specifically, the thickness adjusting unit 70 includes two first ruled lines L1 located at both ends of the body 30a that is folded before opening, that is, between the front main panel 31 and one side panel 32 and the rear surface. On the first ruled line L <b> 1 between the main panel 33 and the other side panel 34, a bias is provided on the side opposite to the side where the upper surface flaps 41, 42, 43, 44 are attached.

  For example, as shown in an enlarged view in FIG. 4A, the thickness adjusting unit 70 forms an elliptical thickness region 71 that divides the first ruled line L <b> 1, and the fourth ruled line L <b> 4 that partitions the thickness region 71. Have. The thickness region 71 can be formed by ruled line processing or deboss processing.

  In the carton 1 to which the present invention is applied, when the main body panel 30 is bent along the fourth ruled line L4, the thickness region 71 has a thickness corresponding to the plate thickness difference in the direction orthogonal to the first ruled line L1. Become. Thereby, the plate | board thickness difference of the side by which the upper surface flaps 41, 42, 43, and 44 were affixed and the opposite side can be eliminated.

Therefore, in the carton 1 to which the present invention is applied, as shown in FIG. 5, when the blank sheets 20 folded in a flat shape are stacked, the stacked blank sheets 20 can be prevented from being inclined obliquely. it can. Further, the lateral displacement of the blank sheet 20 can be prevented by the thickness adjusting portions 70 positioned at both ends of the blank sheet 20 folded in a flat shape. Moreover, even when the blank sheet 20 folded in a flat shape is aligned in the transport box, it is possible to prevent the alignment state of the blank sheet 20 from being disturbed.
As described above, in the carton 1 to which the present invention is applied, the folded blank sheets 20 are prevented from being tilted or disturbed in the alignment state, and can be stored in a stable state in the transport box. is there.

In addition, this invention is not necessarily limited to the structure of the said carton 1, In the range which does not deviate from the meaning of this invention, a various change can be added.
Specifically, the thickness adjusting unit 70 is not limited to the shape illustrated in FIG. 4A described above, and is parallel to the first ruled line L1, for example, as illustrated in FIG. 4B. The thickness region 71 may be defined by two fourth ruled lines L4 and fourth ruled lines L4 that connect both ends of the two fourth ruled lines L4 and the first ruled line L1, respectively.

  Moreover, as shown in FIG.4 (c), the thickness adjustment part 70 may divide the thickness area | region 71 by the 4th ruled line L4 discontinuous with the 1st ruled line L1. In this case, it is preferable that the fourth ruled line L4 is formed to a position that is parallel to the first ruled line L1 and partially overlaps the first ruled line L1 at both ends of the thickness region 71 in the thickness direction. Thereby, the main body panel 30 can be easily bent along the fourth ruled line L4.

  Furthermore, as shown in FIG. 4D, the thickness adjusting unit 70 may be one in which a fifth ruled line L5 orthogonal to the first ruled line L1 is formed in the thickness region 71. In this case, the main body panel 30 can be easily bent along the fourth ruled line L4, and the strength of the thickness region 71 in the direction orthogonal to the first ruled line L1 can be increased.

(Second Embodiment)
Next, a carton 80 shown in FIGS. 6 to 8 will be described as a second embodiment.
In addition, in the following description, about the site | part equivalent to the said carton 1 and the blank sheet | seat 20, while omitting description, the same code | symbol shall be attached | subjected in drawing.

  As shown in FIG. 6, the carton 80 has a thickness adjusting portion 70 except that the convex portions 72 are provided on the side plates 31, 32, 33, 34 instead of the thickness region 71 defined by the fourth ruled line L 4. As shown in FIG. 7, it is comprised by the blank sheet 81 substantially the same as the said blank sheet 20. As shown in FIG.

  Specifically, the convex portion 72 is biased to the side opposite to the side on which the upper surface flaps 41, 42, 43, 44 are adhered in the main surfaces of the side plates 31, 32, 33, 34. . Further, when the blank sheet 81 is folded into a flat shape, the convex portion 72 provided on the main panel 31 on the back and the convex portion 72 provided on the one side panel 32 overlap with each other, and on the front main panel 33. The protrusions 72 provided and the protrusions 72 provided on the other side panel 34 are arranged at positions where they overlap each other. Further, the convex portion 72 is formed so as to protrude toward the inside of the container body 2 at a height approximately equal to the thickness of the paperboard. Such a convex part 72 can be formed by embossing.

  In the carton 80 to which the present invention is applied, as shown in FIG. 8, when the blank sheet 81 is folded in a flat shape, the convex portion 72 provided on the main panel 31 on the back surface and the one side panel 32 are provided. The convex portion 72 provided overlaps, and the convex portion 72 provided on the front main panel 33 and the convex portion 72 provided on the other side panel 34 overlap with each other, whereby the upper surface flaps 41, 42, 43, It is possible to eliminate the difference in plate thickness between the side where 44 is attached and the opposite side.

Therefore, in the carton 80 to which the present invention is applied, when the blank sheets 81 folded in a flat shape are stacked, the stacked blank sheets 81 can be prevented from being inclined obliquely. Moreover, even when the blank sheet 81 folded in a flat shape is aligned in the transport box, it is possible to prevent the alignment state of the blank sheet 81 from being disturbed.
As described above, in the carton 80 to which the present invention is applied, the folded blank sheets 81 are prevented from being tilted or disturbed in the alignment state, and can be stored in a stable state in the transport box. is there.

Note that the present invention is not necessarily limited to the configuration of the carton 80, and various modifications can be made without departing from the spirit of the present invention.
Specifically, the present invention is not limited to the configuration in which the convex portion 72 is provided on the four side plates 31, 32, 33, 34, and the above-described configuration is applied to at least two of the four side plates 31, 32, 33, 34. It can be set as the structure provided in the convex part 72. FIG. In this case as well, when the blank sheet 81 is folded flat, the protrusions 72 provided on the two side plates may overlap each other.

  Further, in the present invention, the convex portion 72 can be formed so as to protrude toward the outside of the container body 2. In this case, when the blank sheets 81 folded in a flat shape are stacked, the convex portions 71 of the stacked blank sheets 81 overlap with each other, whereby the upper surface flaps 41, 42, 43, and 44 are attached. It is possible to eliminate the difference in thickness between the plate and the opposite side.

FIG. 1 is a perspective view showing a configuration of a carton shown as the first embodiment. FIG. 2 is a plan view of a blank sheet constituting the carton shown in FIG. FIG. 3 is a plan view showing a folded state of the blank sheet shown in FIG. FIG. 4 is a plan view showing the configuration of the thickness adjusting unit. FIG. 5 is a side view showing a state in which the blank sheets shown in FIG. 3 are stacked. FIG. 6 is a perspective view showing a configuration of a carton shown as the second embodiment. FIG. 7 is a plan view of a blank sheet constituting the carton shown in FIG. FIG. 8 is a plan view showing a folded state of the blank sheet shown in FIG. FIG. 9 is a side view showing a state in which conventional blank sheets are stacked. FIG. 10 is a side view showing a state in which a conventional blank sheet is packed in a transport box.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Carton 2 ... Container main body 3 ... Cover body 30 ... Main body panel 31, 32, 33, 34 ... Side plate 35 ... Paste margin 36 ... Hinge part 37 ... Insertion port 41, 42, 43, 44 ... Upper surface flap 51, 52, 53, 54 ... Bottom flap 60 ... Lock mechanism 61 ... Knob piece 62 ... Lock piece 70 ... Thickness adjustment part 71 ... Thickness area 72 ... Convex part 80 ... Carton 81 ... Blank sheet

Claims (9)

A blank sheet is formed by cutting a paper board with a ruled line, and the blank sheet has four side plates sequentially adjacent to each other with the first ruled line interposed therebetween, and an adhesive margin adjacent to the one side plate with the first ruled line interposed therebetween. A main body panel sequentially connected in a direction orthogonal to the first ruled line, an upper surface flap connected to the side plate across a second ruled line along one side orthogonal to the first ruled line of the main body panel, and the main body panel A bottom flap connected to the side plate across a third ruled line along the other side orthogonal to the first ruled line,
The main body panel is bent along the first ruled line, and the side plate at the other end is attached to the glue margin to form a cylindrical body part, and the upper surface flap is formed along the second ruled line inside the body part. The container body is sealed by sticking to the inner surface of the side plate, folding the body portion, folding the bottom flap along the third ruled line, and sealing the bottom opening of the body portion. A carton composed of
In the folded state before the container body is opened, the container body has a plate thickness on the side on which the upper surface flap is attached larger than the plate thickness on the opposite side,
A carton, wherein the main body panel is provided with a thickness adjusting portion for adjusting a difference in thickness between the side on which the upper surface flap is adhered and the opposite side.   The carton according to claim 1, wherein the thickness adjusting portion is provided on a side opposite to a side on which the upper surface flap is attached. The thickness adjusting part is provided on each of two first ruled lines located at both ends of the body part folded before the boxing, and forms a thickness area for dividing the first ruled line. Has a fourth ruled line,
The thickness region has a thickness corresponding to the plate thickness difference in a direction orthogonal to the first ruled line when the main body panel is bent along the fourth ruled line. In the carton.   The carton according to claim 3, wherein the thickness region is partitioned by a fourth ruled line that is discontinuous from the first ruled line.   The carton according to claim 3 or 4, wherein a fifth ruled line orthogonal to the first ruled line is formed in the thickness region.   The carton according to any one of claims 3 to 5, wherein the thickness region is formed by ruled line processing or deboss processing.   The carton according to claim 1 or 2, wherein the thickness adjusting portion is a convex portion provided on a side plate to which the upper surface flap is attached.   The carton according to claim 7, wherein the convex portion is formed by embossing.   The carton according to any one of claims 1 to 8, further comprising a lid that covers an upper surface opening of the container body.

Images