JP4869081B2 - Carton blank - Google Patents

Description

  The present invention relates to a carton that accommodates a plurality of articles such as cans, and more particularly to a technique for improving the manufacturing efficiency and cost reduction of a carton blank.

  2. Description of the Related Art Conventionally, cartons that contain a plurality of articles such as beverage cans such as soft drinks, bottles, and the like for distribution and use by consumers have been provided. Generally, in a carton that contains articles, a box-like carton comprising a top wall panel, a bottom wall panel, and front, rear, left and right side wall panels, or a part of the box-like carton is cut out to have a window portion. A carton that can be confirmed, or a so-called round-up carton that has a top wall panel, a bottom wall panel, and a pair of side wall panels, has a cylindrical structure with an open front end and rear end, and can confirm the contents. Is known (see, for example, Patent Documents 1 to 4). In addition, a carton having a partially closed structure (side wall panel) for preventing articles from falling off at the opening of the round-up carton, and an end panel and a web panel at the opening of the round-up carton are provided. Many cartons are known, such as so-called strong packs, in which a web panel is engaged with an article by bending in the direction to form a retaining structure.

  Some of these cartons have a grip portion at one end of the top wall panel or a part of the top wall panel, and are thus carried and displayed. When a consumer purchases such an article in a carton unit, the carton is carried by a gripping means formed on the top of the carton, and when the article is taken out, for example, a cutting panel (zipper formed on the top of the carton) ) Is pulled to break the carton.

  In the carton blank for forming such a carton, mechanical means, for example, a blade (blade) can be arranged in a punching pattern of the carton blank, and a cut line or a weakening line can be punched into a raw material such as cardboard. Forming with a punching device, such as a batch method in which a plurality of raw material sheet papers having a certain area are supplied instead of the punching device and repeatedly punching carton blanks in a batch process, or a carton on a gravure roll There is a continuous method in which a blanking pattern is arranged and a carton blank is continuously punched and formed while supplying roll paper. From the viewpoint of manufacturing efficiency, the latter continuous method that can speed up the punching formation. Is mainly adopted.

  FIG. 3 shows an example of a conventional carton blank, and FIG. 5 shows an arrangement example of the carton blank on the roll paper when the conventional carton blank is continuously formed by a continuous method. In FIG. 5, the direction indicated by the width direction together with the arrow is the lateral width of the roll paper, and the direction indicated by the longitudinal direction is the supply direction of the gravure roll paper. In FIG. 5, only one row of carton blanks is shown in the longitudinal direction. However, in actual production, one row is continuously formed in a plurality of rows in the roll paper supply direction. Moreover, although six are arranged in the width direction, any number can be used.

  As shown in FIG. 5, when forming a conventional carton blank, a gap of several millimeters is required between adjacent carton blanks. The reason for this is that if the carton blanks are adjacent to each other without providing a gap, punching scraps (removed portions) generated when punching the concave portions of both cartons indicated by reference numerals 70c and 72c, for example, are discontinuous fine pieces. Therefore, when the punching device is operated at high speed, it is difficult to accurately punch out this minute removal part, or even if it is punched out, the small pieces are scattered and caught in the gravure roll, and other punching formation parts This is because there are problems such as adversely affecting the system.

  The minute removal portion 70c is necessary to form a flap for forming a carton, and the removal portion 72c is removed in order to eliminate a sharp portion from the viewpoint of preventing injury of the user when using the carton. Is a necessary part. As shown in FIG. 5, by providing a gap between the carton blanks, the removed portions 70c and 72c are continuous with other removed portions in a strip shape, and the removed portions can be accurately removed without scattering. Can do.

U.S. Pat. No. 2,889,040 U.S. Pat. No. 3,167,214 US Patent No. 5,000,313 US Pat. No. 5,195,676 WO03 / 004375 U.S. Pat. No. 3,270,944 U.S. Pat. No. 3,122,302

  However, in the arrangement of the conventional carton blank as described above, there is a problem that the waste portion of the raw material paper is increased by providing the gap, and the raw material cost is increased. Further, since the end portions of the carton blank are separated from each other via a gap, there is a problem in manufacturing efficiency, such that two blades of a punching device corresponding to punching of this portion are required.

  The present invention has been made in view of the above circumstances, while maintaining the structure for the formation of the flaps necessary for carton formation and article holding and the elimination of the sharp part, the carton blanks can be adjacent to each other, An object of the present invention is to provide a carton blank that suppresses the generation of minute removal portions, further reduces the number of blades disposed in a punching device, improves device suitability, and suppresses raw material costs.

The present invention is a carton for holding a plurality of articles such as cans, and includes a plurality of panels including a bottom wall panel, a side wall panel, and a top wall panel for forming a cylindrical structure. The end panel is provided with end panels at both open ends, and a lower web panel is provided between the end panel and the bottom wall panel, and a lower web panel is provided between the end panel and the top wall panel. An upper web panel for engaging and fixing the article is provided, and an end panel is defined by an outermost side forming a part of the outline of the carton blank among the sides defining the upper web panel and the lower web panel. By forming the side by retreating inward of the carton blank from the outermost side that forms a part of the outline of the carton blank, the outermost sides of the upper web panel and the lower web panel are recessed, and the outermost side of the end panel is formed. Outside When a plurality of carton blanks are adjacent to each other as a convex part, the convex part of one carton blank and the concave part of the adjacent carton blank are engaged, and the convex part of the carton blank adjacent to the concave part of one carton blank and Is engaged.

  In the carton having the above configuration, the convex part of one carton blank and the concave part of the adjacent carton blank are engaged, and the concave part of one carton blank and the convex part of the adjacent carton blank are engaged. The panels can be adjacent to each other while ensuring the concave and convex portions necessary for forming the flap. Thereby, the strip-shaped removal part which existed in the gap | interval of the conventional carton blank can be eliminated. As a result, the amount of raw material paper can be reduced, and the number of blades for punching in the carton blank punching device can be reduced.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a blank 1a for forming a carton for accommodating a plurality of articles such as cans, which is made of cardboard or a similar foldable sheet material. In FIG. 1, a blank 1a includes a first bottom wall panel 10a, a first side wall panel 11a, a top wall panel 12a, a second side wall panel 13a, and a second bottom wall panel 14a, which are crease lines. 30a, 31a, 32a and 33a are continuously connected so as to be bendable. These panels 10a to 14a form a rectangular cylindrical body, and various panels described below are formed on the edges of the panels 10a to 14a.

  On the front end side (right side in FIG. 1) and the rear end side (left side) of the first side wall panel 11a and the second side wall panel 13a, a plurality of end panels 15a, 16a, 17a, 18a are crease lines 34a, 35a, respectively. , 36a, 37a so that it can be bent. Further, between the end panel 15a and the first bottom wall panel 10a, and between the end panel 16a and the first bottom wall panel 10a, the lower web panels 20a and 21a are fold lines 40a, 41a, and 42a, respectively. It is formed to be foldable through 43a. Similarly, between the end panel 15a and the top wall panel 12a and between the end panel 16a and the top wall panel 12a, the upper web panels 22a and 23a are respectively connected via fold lines 44a and 45a and 46a and 47a. The upper web panels 24a and 25a are fold lines 50a and 51a between the end panel 17a and the top wall panel 12a and between the end panel 18a and the top wall panel 12a, respectively. And the lower web panel 26a between the end panel 17a and the second bottom wall panel 14a and between the end panel 18a and the second bottom wall panel 14a. And 27a are formed so as to be foldable via fold lines 54a and 55a and 56a and 57a, respectively. In the assembled state of the carton, these end panels and web panels are folded inwardly into the carton as shown in FIG. 8, and the upper and lower web panels 20a and 22a are linked to the end portions of the article. To prevent the articles from falling off.

  FIG. 3 is a plan view showing a conventional carton blank 1c. The arrangement and names of the panels are in accordance with the carton blank 1a of the present invention, and the same reference numerals denote the same panels and partial names. For example, 10c is a first bottom wall panel and 15c is an end panel. In this carton blank 1c, the sides constituting the front end of the carton, that is, the first bottom wall panel 10c, the lower web panel 20c, the end panel 15c, the upper web panel 22c, the upper web panel 24c, the end panel 17c, the lower web panel 26c and The rightmost side of the second bottom wall panel 14c (hereinafter sometimes referred to as the rightmost end) is arranged in a straight line, and similarly, the leftmost end that is the side that forms the rear end of the carton. Are also arranged in a straight line.

  On the other hand, in the carton blank 1a of the present invention, the positions of the rightmost ends of the end panels 15a, 17a, the first bottom wall panel 10a and the second bottom wall panel 14a are not changed, and the lower web panels 20a, 26a and the upper web are not changed. The rightmost ends of the panels 22a and 24a retreat inward (left in the figure), and the rightmost ends of the end panels 15a and 17a, the first bottom wall panel 10a and the second bottom wall panel 14a form a relatively convex portion. The rightmost ends of the lower web panels 20a and 26a and the upper web panels 22a and 24a form a recess relatively. Similarly, the positions of the leftmost ends of the end panels 16a and 18a, the first bottom wall panel 10a and the second bottom wall panel 14a remain unchanged, and the leftmost ends of the lower web panels 21a and 27a and the upper web panels 23a and 25a. Is retracted inward (right in the figure), and the leftmost ends of the end panels 16a and 18a, the first bottom wall panel 10a and the second bottom wall panel 14a form a relatively convex portion, and the lower web panel 21a, The leftmost ends of 27a and upper web panels 23a, 25a form a recess relatively.

  This is illustrated in FIG. FIG. 6 is an enlarged view of the rear end of the first bottom wall panel 10a, the first side wall panel 11a and the top wall panel 12a, and is removed from the conventional carton blank 1c to form the carton blank 1a of the present invention. The removed portions 73a to 76a that need to be performed are indicated by hatching.

  At this time, the end panel 15a constituting the convex portion has a protruding portion 80a and an inclined portion 90a, and similarly, the end panels 16a, 17a and 18a have a protruding portion 81a, an inclined portion 91a and a protruding portion 82a, respectively. And an inclined portion 92a, and a protruding portion 83a and an inclined portion 93a. As shown in FIG. 4, the carton blank 1 a and a carton blank 1 b described later are adjacent to each other by forming the concavo-convex portions at the rightmost end and the leftmost end of the carton while forming the protrusion and the inclined portion in this way. They can be arranged alternately.

  The top wall panel 12a is formed with a zipper 60a defined by an array of a plurality of punched short slits, and the zipper 60a is broken and removed in a state where the article is accommodated. Thus, the carton can be opened and the article taken out. Further, a gripping means is punched and formed at the center of the zipper 60a, and one side is foldably connected to the zipper 60a via a crease line. The user can carry a carton by inserting a finger into the grasping means and grasping it.

  The second bottom wall panel 14a is formed by punching and forming a plurality of coupling flaps 61a that become joints when assembling the carton, and is connected to the second bottom wall panel 14a via a fold line so as to be foldable. A plurality of coupling flap receiving slits 62a for receiving the coupling flaps 61a are punched and formed in the bottom wall panel 10a. The carton can be closed by inserting and engaging these coupling flaps 61a into the coupling flap receiving slit 62a.

  Further, the first bottom wall panel 10a and the second bottom wall panel 14a have a removal portion 72a at a corner portion, and by removing this portion, the corner portion of the carton can be rounded. It is possible to prevent injury at the part. Further, the lower web panels 20a and 21a have a removal portion 71a, which coincides with the position of the removal portion 72b which is a corner portion of the adjacent carton blank 1b as shown in FIG. ing. If the removal portion 71a does not exist, the removal portion 72a is punched during the blanking process of the carton blank to generate a triangular triangular piece having an acute angle, which is the cause of the problem of the punching device that operates at high speed as described above. However, by providing the removal portion 71a, it is possible to widen the acute angle of the minute piece from a right angle to an obtuse angle and to increase the area of the removal portion, thereby facilitating handling.

  Next, FIG. 2 shows a blank 1b for forming a carton for accommodating a plurality of articles such as cans, which is made from cardboard or a similar foldable sheet material. Yes. Similarly to the conventional carton blank 1c, the carton blank 1b has the same configuration as the carton blank 1a. The arrangement and names of the panels are the same as those in the carton blank 1a, and the same reference numerals denote the same panels and partial names. . For example, 10b is a first bottom wall panel and 15b is an end panel. Therefore, the description regarding the configuration common to the carton blank 1a is omitted, and only the differences will be described below.

  As in the carton blank 1a shown in FIG. 1, also in the carton blank 1b, the end panels 15b, 16b, 17b and 18b constituting the projecting portions are respectively a protrusion 80b and an inclined portion 90b, and a protrusion 81b and an inclined portion. 91b, a protrusion 82b and an inclined part 92b, and a protrusion 83b and an inclined part 93b. As shown in FIG. 4, the carton blank 1 b and a carton blank 1 a described below are adjacent to each other by forming the concavo-convex portions at the rightmost end and the leftmost end of the carton while forming the protrusion and the inclined portion in this way. They can be arranged alternately.

  In the carton blank 1a, the protrusions 80a, 81a, 82a and 83a are located above the inclined parts 90a, 91a, 92a and 93a in the drawing, whereas in the carton blank 1b, the protrusions 80b, 81b , 82b and 83b are located below the inclined portions 90b, 91b, 92b and 93b in the drawing. In this way, by reversing the configuration of the concavities and convexities in the carton blanks 1a and 1b, as shown in FIGS. 4 and 7, the carton blanks 1a and 1b can be adjacent to each other without a gap. FIG. 7 is an enlarged view of an adjacent portion of the carton in FIG. As shown in FIG. 7, the inclined portion of the end panel 16a of the carton blank 1a and the inclined portion of the end panel 15b of the carton blank 1b can be in contact with each other.

  Further, in the carton blank 1a, the upper lower web panels 20a and 21a have a removal portion 71a in the drawing, but in the carton blank 1b, the lower lower web panels 26a and 27a in the drawing have a removal portion 71b. have. About the effect of these removal parts 71b, it is the same as that of the carton blank 1a. Further, the reason why the formation location is different from that of the carton blank 1a is to correspond to the position of the removed portion 72a that is a corner portion of the adjacent carton blank 1a as shown in FIG.

  In order to assemble the carton from the carton blanks 1a and 1b shown in FIGS. 1 and 2, a continuous folding operation is performed. The bending operation is performed without reversing or rotating the blank or carton with a linear machine line. The following shows the procedure, but the present invention is not limited to the following examples. Since the basic configurations of the carton blanks 1a and 1b are the same, the symbol a / b may be omitted. For example, the code 10 may be read as any of the codes 10a / 10b.

  First, an article such as a can is placed on the top wall panel 12 placed horizontally. At this time, it is normal to place the can on the top wall panel 12 with the upper end of the can facing down, but there is no particular limitation. Next, the end panels 15 and 16 are bent 180 degrees inward of the carton along the crease lines 34 and 35 so as to be in close contact with the first side wall panel 11, and the first side wall panel 11 is moved vertically upward along the crease line 31. It is bent and brought into close contact with the side surface of the article containing the first side wall panel 11. Similarly, the end panels 17 and 18 are bent 180 degrees inward in the carton along the crease lines 36 and 37 and are brought into close contact with the second side wall panel 13, while the second side wall panel 13 is vertically upward along the crease line 32. It is bent and brought into close contact with the side surface of the article containing the second side wall panel 13.

  Subsequently, the first bottom wall panel 10 and the second bottom wall panel 14 are folded at 90 degrees with respect to the first side wall panel 11 and the second side wall panel 13 along the crease lines 30 and 33, respectively, to the lower end of the can. The first bottom wall panel 10 and the second bottom wall panel 14 are stacked in this order to form a rectangular cylindrical body having both ends opened. The coupling flap 61 formed on the second bottom wall panel 14 is pressed with, for example, a finger, and the coupling flap 61 is inserted into the coupling flap receiving slit 62 to couple the first bottom wall panel 10 and the second bottom wall panel 14. . In addition, it replaces with the coupling | bonding by the coupling flap 61, for example, joining methods, such as gluing, can be selected arbitrarily. Thus, a package in which a plurality of cans are loaded in the carton shown in FIG. 8 is completed.

  To remove the can from the carton, a finger tab formed on the zipper 60 is grasped and pulled upward or toward the rear end of the carton. As a result, breakage occurs from both ends of the finger hook tab, and this break propagates to the rectangular short slit formed closest to the break starting point, and with the further tearing of the finger hook tab, the short slit is torn and slit. From the rear end portion, the breakage propagates sequentially between adjacent short slits, and the carton is opened.

  When a carton blank is punched and manufactured, as shown in FIGS. 4 and 5, a plurality of carton blanks are arranged horizontally. 4 and 5 exemplify an example in which six roll papers are arranged in the width direction of the roll paper supplied to the punching device, but the number of arrangements is not particularly limited, and it is a raw material that the entire width of the roll paper is used sufficiently. It is preferable from the viewpoint of cost. 4 and 5 is taken as one unit, and this unit is repeated a plurality of units in the longitudinal direction for continuous punching formation.

  In the conventional carton blank 1c shown in FIG. 5, it is necessary to punch out the removal portion 70c for forming the recesses necessary for forming various panels and the corner removal portion 72c. If the front ends and the rear ends of 1c are adjacent to each other, the removed portions 70c and 72c become minute pieces, and even if punching defects occur or are punched out during high speed operation of the punching device, they are minute. There was a risk that the pieces would scatter and hinder driving. For this reason, the carton blanks are spaced apart from each other, and all the removed portions including the removed portions 70c and 72c are connected to each other so that the carton blanks are accurately collected and removed without being scattered.

  However, in such a conventional carton blank punching, a considerable amount of waste is generated by providing an interval, which is not preferable from the viewpoint of raw material costs. In addition, two blades for punching must be arranged on the gravure roll of the punching apparatus, and there is a problem from the viewpoint of apparatus suitability.

  According to the arrangement of the carton blanks 1a and 1b of the present invention shown in FIG. 4, since the carton blanks are adjacent to each other, there is no removed portion between the carton blanks, and the raw material cost can be reduced. Punching can be performed at the boundary between the carton blanks 1a and 1b only by arranging one blade of the punching device. In addition, by forming the end portions of the end panel and the web panel in the convex portion and the concave portion, there is an effect that it becomes unnecessary to punch out a portion corresponding to the removed portion 70c in the conventional carton blank.

  The terms used in the above description for directions such as top, bottom, end, tip, back, inside, and outside do not limit each panel to such a direction, but simply distinguish the panels from each other. It is only for the purpose. The term crease line does not necessarily refer to a single crease line, and can easily be one or more score lines, for example lines perforated or thinned by press embossing, etc., without departing from the scope of the present invention. It may be a line that bends or bends. The present invention can also be applied to cartons of articles of various arrangements without departing from the scope of the invention.

  As described above, according to the present invention, it is possible to provide a carton blank with improved apparatus suitability for a carton punching apparatus and reduced raw material costs.

It is a top view of the carton blank of the present invention. It is a top view of the carton blank of the present invention. It is a top view of the conventional carton blank. It is a top view which shows arrangement | positioning on roll paper at the time of punching formation of the carton blank of this invention. It is a top view which shows arrangement | positioning on the roll paper at the time of punching formation of the conventional carton blank. It is the top view which compared the change location of the carton blank of this invention, and the conventional carton blank. FIG. 5 is an enlarged view of an adjacent portion of the carton blank in the arrangement of FIG. 4. It is a perspective view which shows the carton of this invention of the state which accommodated the articles | goods.

Explanation of symbols

1a-1c carton blank
10a to 10c first bottom wall panel
11a-11c 1st side wall panel
12a-12c Top wall panel
13a-13c 2nd side wall panel
14a-14c 2nd bottom wall panel
15a to 18c End panel 20a to 21c Lower web panel 22a to 25c Upper web panel 26a to 27c Lower web panel 30a to 57c Crease line 60a to 60c Zipper 61a to 61c Joint flap 62a to 62c Joint flap receiving slit 70a to 76c Removal part 80a ~ 83c Protrusion part 90a ~ 93c Inclined part

Claims (1)

A carton blank for holding a plurality of articles such as cans,
The carton blank includes a plurality of panels including a bottom wall panel, a side wall panel, and a top wall panel for forming a cylindrical structure,
The side wall panel includes an end panel at a portion corresponding to both opening ends of the cylindrical structure,
A lower web panel for engaging and fixing an article between the end panel and the bottom wall panel is provided,
An upper web panel is provided between the end panel and the top wall panel for engaging and fixing an article,
Of the sides defining the upper web panel and the lower web panel, the outermost side forming a part of the outline of the carton blank is formed, and among the sides defining the end panel, a part of the outline of the carton blank is formed. The outermost side of the upper web panel and the lower web panel is formed as a recess, and the outermost side of the end panel is set as a projection, by retreating from the outermost side to the inner side of the carton blank.
When a plurality of the carton blanks are adjacent to each other, the convex part of one carton blank and the concave part of the adjacent carton blank are engaged, and the concave part of the one carton blank and the convex part of the adjacent carton blank are Carton blank characterized by engaging.

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