JP2010023884A - carton - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a carton improved in the box-making property of a flat folded blank sheet. <P>SOLUTION: A vessel body 2 of the carton 1 is formed by bending upper flaps 41, 42, 43 and 44 of the blank sheet along a second crease to be pasted to inner surfaces of side plates 31, 32, 33 and 34, bending the side plates 31, 32, 33 and 34 along the first crease to paste a margin 35 to be pasted up to the side plate 34 and form a flat folded body 30a by making the flat folded body 30a into a square tube, and bending bottom surface flaps 51, 52, 53 and 54 along the third crease to seal an opening 30c of the bottom surface of the body 30a wherein embossed parts 45a, 45b, 45c and 45d for improving the box-making property of the blank sheet are formed at the upper flaps 41, 42, 43 and 44. <P>COPYRIGHT: (C)2010,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 that is die-cut into a predetermined shape is usually produced from a paperboard that has been subjected to surface treatment such as printing by a packaging material manufacturer or ruled line processing for placing a ruled line. 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. To form a body part (this process is called sack application). 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 barrel part folded in a flat shape is opened in a rectangular tube shape, the bottom flap for sealing connected to the bottom side of the trunk part is folded and adhered with an adhesive, The bottom opening of the part is sealed. 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.

  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. (For example, see Patent Document 1).

  In addition, the blank sheet folded flat has a restoring force to return it from its folded state to its original state (called a spring back), so some of the blank sheet jumps out of the transport box. The blank sheets folded flat are packed tightly (for example, about 100 sheets) in a state of being aligned in the transport box.

By the way, the blank sheet folded into a flat shape is kept in a state of being packed in a transport box until it is supplied to the above-described filling process, and is stored in a packaging material manufacturer or a warehouse of a filling factory for about 1 to 3 months. The However, since the blank sheets stored for a long time in such a state are in a state where the folded surfaces are in close contact with each other, when the blank sheet is opened in the filling process, the cylinder is folded into a flat shape. There are cases in which production troubles such as a reverse folding state occur without causing the part to be opened into a rectangular tube shape.
JP 2007-176561 A

  This invention is proposed in view of such a conventional situation, and it aims at providing the carton which improved the boxing property of the blank sheet folded in flat shape.

  In order to achieve this object, the invention according to claim 1 includes a blank sheet cut into a paperboard by putting a ruled line, and the blank sheet includes four side plates that are sequentially adjacent to each other across the first ruled line, A main panel in which a side plate at one end and a margin adjacent to the first ruled line are sequentially connected in a direction perpendicular to the first ruled line, and a second plate along one side perpendicular to the first ruled line of the main panel. And four bottom surface flaps connected to the side plate across the third ruled line along the other side perpendicular to the first ruled line of the main body panel, and each upper surface flap is a second one. The body part folded in a flat shape by bending along the ruled line and sticking to the inner surface of each side plate, bending the main body panel along the first ruled line, and sticking the glue margin to the other side plate The body part folded in a flat shape is shaped like a square tube. After packaging, the container body is configured by folding each bottom flap along the third ruled line and sealing the bottom opening of the trunk, and in the folded state before the trunk is opened The carton is characterized in that at least one upper surface flap that is folded on each other is provided with an embossed portion that is convex toward the other upper surface flap side.

  Further, in the invention according to claim 2, the embossed portion includes a first ruled line between the side plate at one end of each upper surface flap and the side plate adjacent thereto, and a side plate between the side plate at the other end and the side plate adjacent thereto. 2. The carton according to claim 1, wherein the carton is provided in the vicinity of one ruled line.

  In the invention according to claim 3, the linear embossed portion provided on one upper surface flap and the linear embossed portion provided on the other upper surface flap are folded before the trunk portion is opened. The carton according to claim 1 or 2, wherein the carton is extended in a direction intersecting with each other in a state.

  The invention according to claim 4 is characterized in that a notch for forming a gap with the first ruled line is provided at a side edge of the upper surface flap. The carton according to one item.

  Further, the invention according to claim 5 is an inclined portion in which the notch portion is formed obliquely in a direction in which the gap gradually expands from the proximal end portion of the upper surface flap toward the distal end portion, and from the inclined portion to the distal end portion. One upper surface flap and the other upper surface flap which have a parallel part formed in parallel with the first ruled line so that the gap is constant toward each other and which fold over each other in the folded state before the trunk part is opened Is different in the width of the gap formed between the first ruled line and the notch portion provided in one upper surface flap of the notch portion provided in the other upper surface flap. The carton according to claim 4, wherein the carton is located inside or outside.

  According to a sixth aspect of the present invention, a gap formed between the base end portion of the upper surface flap and the first ruled line is formed on the first ruled line when the main body panel is bent along the first ruled line. The carton according to claim 4 or 5, wherein a side end portion is formed in such a width that the protruding end portion can be contacted.

  Moreover, the invention which concerns on Claim 7 is provided with the cover body which covers the upper surface opening part of a container main body, It is a carton as described in any one of Claims 1-6 characterized by the above-mentioned.

  As described above, in the carton according to the present invention, by providing the embossed portion that is convex toward the other upper surface flap side on at least one upper surface flap that overlaps each other in the folded state before the trunk portion is opened. It is possible to improve the retractability of the blank sheet folded into a flat shape.

  Further, in the carton according to the present invention, by providing a notch portion that forms a gap with the first ruled line at the side end portion of the upper surface flap, the flatness of the blank sheet folded in a flat shape is improved. It is possible to make it.

  Therefore, according to the present invention, for example, even a blank sheet stored in a folded state for a long time can be properly opened, and the container body composed of such a blank sheet can be powdered. In the process of filling the contents, etc., it is possible to prevent production troubles such as that the body part folded in a flat shape does not open up into a square tube without improving the filling equipment. It is.

Hereinafter, a carton to which the present invention is applied will be described in detail with reference to the drawings.
First, a carton 1 shown in FIG. 1 will be described as an embodiment of the present invention.
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 a powder spoon (not shown) can be used to measure and take out the powder detergent inside.

  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 it 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 FIGS. 1 and 3, the container body 2 folds the upper surface flaps 41, 42, 43, 44 along the second ruled line L <b> 2 to the inside of the trunk portion 30 a, so that the side plates 31, 32, 33, 34 By sticking to the inner surface with an adhesive, the strength in the vicinity of the upper surface opening 30b of the container body 2 (body portion 30a) 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 are increased. Is possible. 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.

  As shown in FIGS. 1 and 2, the upper surface flaps 41, 42, 43, 44 have embossed portions 45 a, 45 b, 45 c for improving the flatness of the blank sheet 20 folded into a flat shape described later. , 45d. These embossed portions 45a, 45b, 45c, and 45d form a convex shape from one upper surface flap that is folded over to the other upper surface flap side in a folded state before the trunk portion 30a is raised into a rectangular tube shape. The thickness is about the thickness of the upper surface flaps 41, 42, 43, 44. Further, these embossed portions 45a, 45b, 45c, and 45d have a substantially rectangular shape in plan view.

  Further, the embossed portions 45a, 45b, 45c, and 45d are the first between the rear main panel (one side plate) 31 and the one side panel 32 adjacent thereto on the upper surface flaps 41, 42, 43, and 44, respectively. It is provided in the vicinity of the first ruled line L1 between the ruled line L1 and the front main panel (side plate on the other end) 34 and the other side panel 33 adjacent thereto. Further, these embossed portions 45a, 45b, 45c, and 45d are provided on both sides of one upper surface flaps 41 and 43 and the other upper surface flaps 42 and 44, respectively. That is, the embossed portion 45a on the main panel 31 side on the back and the embossed portion 45b on the side panel 32 side are provided at positions where they overlap each other when the blank sheet 20 is folded flat, The embossed portion 45c on the panel 33 side and the embossed portion 45d on the other side panel 34 side are provided at positions that overlap each other when the blank sheet 20 is folded flat.

  Notch portions 46A and 46B that form gaps S with the first ruled lines L1 are provided at the side end portions of the upper surface flaps 41, 42, 43, and 44, respectively. As shown in an enlarged view in FIG. 4, these notches 46A and 46B are inclined in the direction in which the gap S gradually expands from the base end portion of each of the upper surface flaps 41, 42, 43 and 44 toward the tip end portion. The formed inclined part 46a and the parallel part 46b formed in parallel with the first ruled line L1 are formed so that the gap S is constant from the inclined part toward the tip part. Such a gap S is preferably provided in the range of the thickness of the blank sheet 20 to 5 mm or less in the parallel portion 46b.

  In addition, the upper surface flaps 41 and 43 and the other upper surface flaps 42 and 44, which are folded on each other in the folded state before the trunk 30a is opened, have a gap S formed between the first ruled line L1 therebetween. The width is different. Specifically, the notch portion 46A provided in one upper surface flap 41, 43 is formed between the first ruled line L1 rather than the notch portion 46B provided in the other upper surface flaps 42, 44. The width of the gap S is reduced. Thereby, the notch part 46A provided in one upper surface flaps 41 and 43 is located inside the notch part 46B provided in the other upper surface flaps 42 and 44 when the blank sheet 20 is folded flat. Will be located. In other words, the notch portion 46B provided in the other upper surface flaps 42, 44 is outside the notch portion 46A provided in the one upper surface flaps 41, 43 when the blank sheet 20 is folded flat. Will be located.

  Further, the gap S formed between the upper end flaps 41, 42, 43, and 44 and the first ruled line L1 is the first gap when the main body panel 30 is bent along the first ruled line L1. It is formed with a width that allows the side end portion to contact the protrusion T formed on the ruled line L1. Thereby, in the container main body 2, as shown in FIG. 5, in the state where the trunk portion 30a is raised in a rectangular tube shape, the gap S at each corner portion of the upper surface opening portion 30b is closed, and the upper surface opening portion 30b is formed. When the lid 3 is closed, it is possible to prevent the internal powder detergent from leaking from this portion.

  The bottom flaps 51, 52, 53, 54 are sealing flaps for sealing the bottom opening 30 c of the trunk portion 30 a as shown in FIGS. 1, 2 and 3. The pair of side flaps 52 and 54 extended from the lower ends of the panels 32 and 34 and the pair of main flaps 51 and 53 extended from the lower ends of the main panels 31 and 33 are configured.

  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 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 above-described embossed portions 45a, 45b, 45c, and 45d are provided on the upper surface flaps 41, 42, 43, and 44 attached to the inner surfaces of the side plates 31, 32, 33, and 34. Is provided. Thereby, it is possible to improve the retractability of the blank sheet 20 folded flat.

  Specifically, as shown in FIGS. 6 (a) and 6 (b), when the blank sheet 20 is folded flat, both sides of one upper surface flaps 41 and 43 and the other upper surface flaps 42 and 44 that fold over each other. The embossed portions 45a, 45b, 45c, 45d provided to face each other overlap each other, so that the embossed portions 45a, 45b, 45c, 45c are between the upper surface flaps 41, 43 and the other upper surface flaps 42, 44, respectively. A gap corresponding to the thickness of 45d is formed.

  This prevents the surfaces of the one upper surface flaps 41 and 43 and the other upper surface flaps 42 and 44 from being in close contact with each other, and when trying to unfold the blank sheet 20 in the filling step described above, Both ends of the body portion 30a folded in a flat shape, that is, a portion along the first ruled line L1 between the main panel 31 on the back side and one side panel 32, the main panel 34 on the front side, and the other side panel 33 By simply pressing the portions along the first ruled line L1 between them in a direction approaching each other, it is possible to appropriately and easily raise the trunk portion 30a folded in a flat shape into a rectangular tube shape. .

  Further, in the carton 1 to which the present invention is applied, notches 46a, 46b, 46c, which form gaps S between the first ruled lines L1 at the side end portions of the upper surface flaps 41, 42, 43, 44, respectively. By providing 46d, it is possible to further improve the retractability of the blank sheet 20 folded into a flat shape.

  Specifically, when the blank sheet 20 is folded into a flat shape, the side end portion provided with the notches 46a and 46c of one upper surface flaps 41 and 43 that overlap each other and the other upper surface flaps 42 and 44 are cut. By forming a gap S between the side end portions where the notched portions 46b and 46d are provided, the surfaces of the upper surface flaps 41 and 43 and the other upper surface flaps 42 and 44 that are folded on each other are in close contact with each other. The blanking property of the blank sheet 20 folded in a flat shape can be improved.

  Furthermore, the upper surface flaps 41 and 43 and the other upper surface flaps 42 and 44 that are folded over in the folded state before the trunk portion 30a is opened are formed with a gap S formed between the first ruled line L1 therebetween. The notches 46a and 46c provided in one upper surface flaps 42 and 44 are positioned inside or outside the notches 46b and 46d provided in the other upper surface flaps 42 and 44, respectively. By doing so, it is possible to further improve the boxing property of the blank sheet 20 folded in a flat shape.

  As described above, in the carton 1 to which the present invention is applied, even the blank sheet 20 stored for a long time in a folded state can be appropriately opened. In the process of filling the container body 2 with the powder detergent, the trouble of production such as the body portion 30a folded in a flat shape is not raised in a rectangular tube shape, without improving the filling equipment, etc. It is possible to prevent.

  In the present invention, the embosses 45a, 45b, 45c, and 45d and the notches 46a, 46b, 46c, and 46d are easily formed when the blank sheet 20 that is cut with a ruled line is formed on the paperboard. It is possible. Further, the embosses 45a, 45b, 45c, 45d and the notches 46a, 46b, 46c, 46d are located inside the container body 2, and therefore do not affect the appearance of the appearance.

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, in the above-described embodiment, the embossed portions 45a, 45b, 45c, and 45d are configured to have a substantially rectangular shape in plan view, but are not necessarily limited to such a shape. However, it is also possible to provide linear embossed portions 47a, 47b, 47c, and 47d as in the blank sheet 70 shown in FIG.
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.

  The linear embossed portions 47a, 47b, 47c, and 47d are connected to the main panel (one side plate) 31 on the rear surface of each of the upper surface flaps 41, 42, 43, and 44, as shown in FIGS. The first ruled line L1 between one side panel 32 adjacent to the first ruled line L1 and the first ruled line L1 between the front main panel (side plate at the other end) 34 and the other side panel 33 adjacent to the first ruled line L1. Is provided. In addition, the embossed portion 45a on the main panel 31 side on the back and the embossed portion 45b on the side panel 32 side are provided so as to extend in directions intersecting with each other in the folded state before the trunk portion 30a is opened. The embossed portion 45c on the front main panel 33 side and the embossed portion 45d on the other side panel 34 side are provided so as to extend in directions intersecting with each other in the folded state before the trunk portion 30a is opened. . That is, the linear embossed portions 47a and 47c provided on one upper surface flap 41 and 43 and the linear embossed portions 47b and 47d provided on the other upper surface flaps 42 and 44 are blanks before the sack is applied. The sheet 70 is provided so as to extend in directions parallel to each other.

  In this blank sheet 70, as shown in FIG. 10, in the state where the trunk portion 30a is folded flat after the sack is applied, it is provided on both sides of the upper surface flaps 41 and 43 and the other upper surface flaps 42 and 44 that are folded on each other. The embossed portions 45a, 45b, 45c, and 45d provided so as to face each other overlap each other in a state of crossing each other.

  This prevents the surfaces of the one upper surface flaps 41, 43 and the other upper surface flaps 42, 44 from sticking to each other, and when trying to unfold the blank sheet 70 in the filling step described above, Both ends of the body portion 30a folded in a flat shape, that is, a portion along the first ruled line L1 between the main panel 31 on the back side and one side panel 32, the main panel 34 on the front side, and the other side panel 33 By simply pressing the portions along the first ruled line L1 between them in a direction approaching each other, it is possible to appropriately and easily raise the trunk portion 30a folded in a flat shape into a rectangular tube shape. .

  Therefore, even in this case, even the blank sheet 70 stored in a folded state for a long time can be properly opened, and the container body 2 composed of such a blank sheet 70 can be used as a powder detergent. In the process of filling the product, it is possible to prevent production troubles such as the trunk portion 30a folded flat into a rectangular tube shape without improving the filling equipment.

FIG. 1 is a perspective view showing a configuration example of a carton to which the present invention is applied. 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 main part plan view showing the configuration of the embossed part. FIG. 5 is a main part perspective view showing the configuration of the embossed part. FIG. 6 is a view for explaining an embossed portion in a state in which the blank sheet is folded flat, (a) is a plan view of the main part, and (b) is a cross-sectional view of the main part. FIG. 7 is a plan view showing the configuration of another blank sheet of a carton to which the present invention is applied. FIG. 8 is a main part plan view showing another configuration of the embossed part. FIG. 9 is a perspective view of a main part showing another configuration of the embossed part. FIG. 10 is a main part plan view for explaining an embossed part in a state where the blank sheet shown in FIG. 7 is folded flat.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Carton 2 ... Container main body 3 ... Lid body 30 ... Main body panel 31,32,33,34 ... Side plate 35 ... Glue margin 36 ... Hinge part 37 ... Inlet 41,42,43,44 ... Upper surface flap 45a, 45b, 45c, 45d ... Embossed portion 46A, 46B ... Notch portion 46a ... Inclined portion 46b ... Parallel portion 47a, 47b, 47c, 47d ... Embossed portion 51, 52, 53, 54 ... Bottom flap 60 ... Lock mechanism 61 ... Pick piece 62 ... Lock piece 70 ... Blank sheet

Claims (7)

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, four upper surface flaps connected to the side plate across a second ruled line along one side orthogonal to the first ruled line of the main body panel, Four bottom flaps 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;
Each upper surface flap is bent along the second ruled line and adhered to the inner surface of each side plate, the main body panel is folded along the first ruled line, and the adhesive margin is adhered to the other side plate. By forming the body part folded in a flat shape, the body part folded in the flat shape is raised in a rectangular tube shape, and then the bottom flaps are folded along the third ruled line to form the body part. A carton in which the container body is configured by sealing the bottom opening of the part,
A carton, wherein at least one upper surface flap that overlaps with each other in a folded state before raising the body portion is provided with an embossed portion that is convex toward the other upper surface flap side.   The embossed portion is positioned in the vicinity of the first ruled line between the side plate at the one end and the side plate adjacent thereto on each upper surface flap and the first ruled line between the side plate at the other end and the side plate adjacent thereto. The carton according to claim 1, wherein the carton is provided.   In a direction in which the linear embossed portion provided on the one upper surface flap and the linear embossed portion provided on the other upper surface flap cross each other in the folded state before the trunk portion is opened. The carton according to claim 1 or 2, wherein the carton is extended.   The carton according to any one of claims 1 to 3, wherein a notch portion that forms a gap with the first ruled line is provided at a side end portion of the upper surface flap. The notch includes an inclined portion formed obliquely in a direction in which the gap gradually expands from a proximal end portion of the upper surface flap toward the distal end portion, and the gap from the inclined portion toward the distal end portion. A parallel part formed in parallel with the first ruled line so as to be constant;
The width of the gap formed between one upper surface flap and the other upper surface flap that fold over each other in the folded state before the trunk portion is opened, and the first ruled line therebetween, and The carton according to claim 4, wherein a notch provided in one upper surface flap is located inside or outside a notch provided in the other upper surface flap.   A gap formed between the base end portion of the upper surface flap and the first ruled line is a protrusion formed on the first ruled line when the main body panel is bent along the first ruled line. The carton according to claim 4 or 5, wherein a side end portion of the upper surface flap is formed with a width capable of contacting.   The carton according to any one of claims 1 to 6, further comprising a lid that covers an upper surface opening of the container body.

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