JP2010064756A - Package made of corrugated fiberboard - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a package made of corrugated fiberboard which can be easily unpacked. <P>SOLUTION: Any one of side plate parts is constituted to be an unpacking side plate part 11. A cut-out starting part 2 which is opened during the unpacking, is provided at a position close to one side of a middle part in the unpacking side plate part 11. An upper side breakage guide line 3 is formed in the unpacking side plate part 11 from an upper end edge to an upper end of the cut-out starting part 2. A lower side breakage guide line 4 is formed in the unpacking side plate part 11 from a lower end edge to the cut-out starting part 2. The unpacking side plate part 11 is peripherally divided with the upper and lower breakage guide lines 3 and 4 and the cut-out starting part 2 as boundaries, and a region on the other side is constituted to be a cutout area 10. When the cutout area 10 is opened outwardly, the unpacking side plate part 11 is broken along the upper and lower breakage guide lines 3 and 4, and separated in the peripheral direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a corrugated cardboard packing tool for packing a packaged product so as to cover its periphery.

  Home appliances and the like are packed in a cardboard packaging until they arrive at the installation location, and the cardboard packaging is usually unpacked around the installation location.

  Moreover, in the following Patent Document 1, a cardboard packaging tool for packing tall large products such as refrigerators, washing machines, etc. is disclosed, but in such large products as well, The packing tool is unpacked around the installation site.

By the way, when unpacking such a large-sized product packaging tool, for example, by pulling the packaging product upward from the large-sized product and removing the packaging tool or using a cutter knife or the like to cut the packaging tool. Generally, the packing tool is removed.
JP 2007-246118 A

  However, when pulling out the packing tool upward, if the height of the product is high, it is necessary to lift the packing tool to a position higher than the height of the product. There was a problem that it became difficult. In addition, in the case of indoors, when the packing tool is pulled out from the upper end of the product, the packing tool may hit the ceiling and the packing tool may not be easily pulled out.

  In addition, when cutting a packing tool with a cutter knife, it is necessary to carefully and slowly tear the packing tool so as not to damage the packed product with the cutter knife. The problem of not being able to occur.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a corrugated cardboard packaging that can be easily and reliably unpacked even when configured to pack large products. .

  In order to achieve the above object, the present invention has the following structure.

[1] Three or more side plate portions are continuously provided in the circumferential direction so that the periphery of the packaged product can be closed, and each side plate portion has the step direction corresponding to the height direction of the packaged product. A corrugated packaging made of corrugated cardboard,
Any one side plate portion of the plurality of side plate portions is configured as an unpacking side plate portion,
In the unpacking side plate part, a slit opening start part is provided at a position closer to one side in the circumferential direction in the intermediate part in the height direction,
On the unpacking side plate part, an upper fracture guide line is provided along an oblique direction from a position near the other end in the circumferential direction of the upper end edge to the upper end of the slit opening start part,
On the unpacking side plate portion, a lower break guide line is provided along a diagonal direction from a position closer to the other end in the circumferential direction of the lower end edge to a lower end of the slit opening start portion,
The unwrapping side plate is divided in the circumferential direction with the upper and lower side breakage guide lines and the cut start part as a boundary line, and the other side area is configured as a cut area,
Starting from a portion corresponding to the opening start portion in the opened state, the opening region is opened outwardly, whereby the unpacking side plate portion is broken along the upper and lower both-side break guide lines. A corrugated cardboard packaging tool configured to be cut off in the circumferential direction.

  [2] The cut opening start portion is configured as an opening portion that is partially opened in advance, and the remaining portion is configured as a cutting allowance portion that can be opened by a cutting operation. Packing tool.

  [3] The cardboard packaging device according to the above item 1 or 2, wherein a height direction straight line portion parallel to the height direction is provided on a part of at least one of the upper and lower side break guide lines.

  [4] A part in each of the upper and lower both-side break guide lines is provided with a height direction straight line portion parallel to the height direction, and the height direction straight line portions are shifted from each other in the circumferential direction. The cardboard packaging tool according to any one of the preceding items 1 to 3.

  [5] The corrugated cardboard packaging tool according to any one of the preceding items 1 to 4, wherein an upper end of the upper breaking guide line is arranged at the other end of the upper end edge of the unpacking side plate.

  [6] The corrugated cardboard packaging tool described in [5] above, wherein an oblique direction linear portion that is inclined with respect to a height direction is provided on an upper portion including an upper end of the upper fracture guide line.

  [7] The cardboard packaging tool according to any one of the preceding items 1 to 6, wherein a lower end of the lower fracture guide line is disposed at an end portion on the other side of a lower end edge of the unpacking side plate portion.

  [8] The corrugated cardboard packaging tool described in [7], wherein an oblique straight line portion that is inclined with respect to a height direction is provided on a lower side portion including a lower end of the lower fracture guide line.

[9] The cut opening start portion is provided at least at a part thereof with a cutting allowance portion that can be opened by a cutting operation.
The cut-off permission portion is formed in a vertically long strip shape extending in the height direction, and an intermediate break guide line is provided along both side edges of the cut-off permission portion,
The cutting allowance portion is configured to be cut by being pulled outward from either one of its upper and lower ends,
9. The corrugated cardboard packaging tool according to any one of the preceding items 1 to 8, wherein a plurality of bending lines extending in the circumferential direction are provided at intervals in the height direction on the cut-off permission portion.

  [10] Among each of the adjacent side plate portions, any one of the side plate portions is joined and connected, and either one of the two joined side plate portions is configured as the unpacking side plate portion. The cardboard packaging tool according to any one of the preceding items 1 to 9.

  In the present invention, the following preferred configurations can also be employed.

  [11] The cardboard packaging device according to item 2, wherein an information display unit on which information related to the packaged product is displayed is provided on an outer surface of the packaged product, and the opening is disposed corresponding to the information display unit. .

  [12] Among the plurality of side plate portions, the side plate portion excluding the unpacking side plate portion is formed on the ground contact surface during loading and delivery of the packing tool. Packing tool.

  [13] The corrugated cardboard packaging tool according to any one of the preceding items 1 to 12, wherein the side plate portion is constituted by a reinforced corrugated cardboard having a two-layer structure in which corrugated paper sheets are respectively interposed between three flat paper sheets. .

  According to the cardboard packaging tool of the invention [1], at the time of unpacking, the unpacking side plate can be easily separated in the circumferential direction simply by opening the opening region of the unpacking side plate along the circumferential direction. And can be unpacked reliably.

  According to the cardboard packaging tool of the invention [2], it is possible to ensure a sufficiently large opening dimension of the slit opening start portion at the time of unpacking, and the unpacking operation can be performed more easily.

  According to the corrugated cardboard packing tool of the invention [3], even if it is configured to be able to pack a large tall product, it can be unpacked simply and reliably as described above.

  According to the cardboard packaging tool of the invention [4], a plurality of break guide wires parallel to the height direction are not arranged in series, and sufficient strength can be ensured.

  According to the cardboard packaging tools of the inventions [5] to [8], it is possible to prevent the strength from being lowered.

  According to the corrugated cardboard packaging tool of the invention [9], it is possible to smoothly cut the cut-permitting portion and to reliably open the cut opening start portion.

  According to the cardboard packaging tool of the invention [10], it is possible to more reliably prevent the strength from being lowered.

  According to the cardboard packaging tool of the preferred configuration [11], the product information display unit can be visually recognized through the opening in the packaged state, and the information on the packaged product can be accurately grasped without unpacking. it can.

  According to the corrugated cardboard packaging tool having the preferred configuration [12], loading and unloading work on a truck bed can be performed without any trouble while preventing problems such as breakage and rupture.

  According to the cardboard packaging tool having the preferred configuration [13], even higher strength can be obtained.

  1-4 is a figure which shows the cardboard packaging tool which is 1st Embodiment of this invention. As shown in these drawings, this corrugated cardboard packing tool (1) is for packing a hot water storage unit (hot water storage tank) of an electric outdoor water heater (natural refrigerant heat pump water heater) having a height of 2 m or more. . This packing tool (1) is provided with four vertically long side plate portions (11) to (14) for closing four front, rear, left and right peripheral surfaces of the packed product. The side plate portions (11) to (14) are arranged side by side in a circumferentially arranged manner by being bent by 90 ° along a fold line (15) between adjacent side plate portions, and are vertically long as a whole. It is formed in a square tube shape.

  In the first embodiment, directions such as up, down, left, and right are based on the directions in FIG. In other words, the left and right direction is “left and right direction (circumferential direction)”, the right side is “right side (one side)”, the left side is “left side (the other side)”, and the up and down direction is “up and down direction ( (Height direction) ”.

  Further, in the first embodiment, in order to facilitate understanding of the invention, in FIG. 1, the left side plate (11) is the “front plate” and the second side plate (12) from the left is the “right plate”. The third side plate (13) from the left will be described as a “rear side plate”, and the right side plate (14) will be described as a “left side plate”.

  Each of the side plate portions (11) to (14) is a so-called “cover + medium shin + inner paper” in which three flat paper sheets (liner base paper) and two corrugated paper sheets (medium base paper) are alternately laminated. It consists of reinforced corrugated cardboard with a two-layer structure of “+ medium shin + back paper” type. Furthermore, each side plate part (11)-(14) is comprised so that a step direction may be made to correspond to a height direction and a flow direction (wave approach direction) may be made to correspond to the circumferential direction (left-right direction).

  Of the side plate portions (11) to (14), the front side plate portion (11) and the left side plate portion (14) are joined together. That is, a joint margin (15) is provided on the left side edge portion of the front side plate portion (1), and the joint margin (16) is attached in a state of being overlapped with the right side edge portion of the left side plate portion (14). Yes.

  In the present embodiment, the front side plate portion (11) is configured as a side plate portion for unpacking, and the front side plate portion (11) is provided with a slit opening start portion (2), an upper breaking guide line (3), and a lower breaking portion. A guide wire (4) is provided.

  The slit opening start portion (2) is provided along the height direction on the right side portion in the height direction intermediate portion of the front side plate portion (11), and has a vertically long shape. The slit opening start portion (2) has a horizontally-long rectangular opening (21) (22) provided at both upper and lower ends, and a vertically long belt-like shape provided between the openings (21) (22). And a cutting allowance portion (23).

  The openings (21) and (22) are formed by cutting out corrugated cardboard corresponding to the region, and are constituted by through holes that penetrate the front plate (11).

  The cutting allowance portion (23) is provided with zipper-like cut lines (24) and (24) along both side edges. Both cut lines (24) and (24) are formed up to a position where the upper end reaches the upper opening (21) and the lower end reaches the lower opening (21), in the height direction (step direction). Are arranged along. Therefore, for example, if the operator grasps the upper end portion of the cut-off permission portion (23) through the upper opening (21) and pulls it toward the front (opening operation), the front plate portion (11) (24) It is torn along the upper end from the upper end along (24), the blocking portion (23) is cut off, and the entire region of the opening start portion (2) is opened.

  As shown in FIG. 6, in this embodiment, a plurality of V-groove fold lines (25) extending in the left-right direction (circumferential direction) are provided along the height direction (vertical direction) in the cutting allowance portion (23). Therefore, the cut-permitting portion (23) can be cut out smoothly.

  That is, the vertically long strip-shaped permissible portion (23) is formed along the step direction (height direction) and is cut from the upper side to the lower side along the step direction. When 25) is not formed, it is difficult to bend when the cutting allowance portion (23) is cut, and the cutting allowance portion (23) cannot be cut smoothly.

  Therefore, in the present embodiment, a plurality of fold lines (25) parallel to the flow direction (left and right direction) are formed at equal intervals in the step direction in the cutting allowance portion (23). When cutting 23) from the top to the bottom, the cut-off allowable portion (23) bends to the outside without difficulty at the fold line (25). Therefore, the cutting allowance part (23) can be cut out easily and smoothly along the step direction.

  Here, in the present embodiment, zipper-like cut lines (24) and (24) provided on both sides of the cut-off permission portion (23) are configured as intermediate breakage induction lines.

  In the present embodiment, at least one of the upper and lower openings (21) and (22) is configured as a viewing window. That is, on the outer surface of the product to be packed, there is provided a product information display section on which information about the product such as product name, type, product number, etc. is displayed, but at a position corresponding to this product information display section, At least one of the upper and lower side openings (21) and (22) is arranged to constitute a viewing window. Therefore, the worker can visually recognize the product information display unit through the viewing window in the packed state, and can accurately grasp the information of the packed product without unpacking. For this reason, for example, it is possible to reliably prevent problems such as inadvertently mistaken product types.

  As shown in FIGS. 1-4, from the upper left corner part of an upper side opening part (21) to the front side board part (11), the upper end left end part of a front side board part (11), in other words, the front side board part (11). A zipper-shaped upper cut line (3) extending in an oblique direction is provided to a corner portion with the left side plate portion (14) at the upper end of the upper portion.

  The upper cut line (3) is constituted by first to third three straight portions (31) to (33).

  The first straight part (31) is arranged on a straight line along a direction inclined at approximately 45 ° with respect to the height direction, and is arranged such that the lower end reaches the upper opening (21).

  The second straight part (32) is arranged linearly along a direction parallel to the height direction, and the lower end is connected to the upper end of the first straight part (31).

  The third straight portion (33) is arranged on a straight line along a direction inclined at approximately 45 ° with respect to the height direction, like the first straight portion (31), and the lower end is the second straight portion (32). And the upper end is arranged so as to reach the left end position of the upper end of the front plate portion (11) as described above.

  Further, the front plate (11) has a left plate (from the lower left corner of the lower opening (22) to the upper left end of the front plate (11), in other words, the left plate (11) at the lower end of the front plate (11). 14) A zipper-shaped lower cut line (4) extending in an oblique direction is provided over a corner portion with 14).

  The lower cut line (4) is composed of first to fifth five straight portions (41) to (45).

  The first straight part (41) is arranged on a straight line along a direction inclined at approximately 45 ° with respect to the height direction, and is arranged so that the upper end reaches the lower opening (22).

  The second straight part (42) is arranged linearly along a direction parallel to the height direction, and the upper end is connected to the lower end of the first straight part (41).

  The third straight line portion (43) is arranged on a straight line along a direction inclined at 45 ° with respect to the height direction, like the first straight line portion (41), and the upper end of the third straight line portion (42). Connected to the bottom.

  The fourth straight line portion (44) is arranged on a straight line along a direction parallel to the vertical direction, like the second straight line portion (42), and its upper end is connected to the lower end of the third straight line portion (43). ing.

  The fifth straight part (45) is arranged on a straight line along a direction inclined at 45 ° with respect to the height direction, like the first and third straight parts (41) and (43), and the upper end is the fourth straight line. It is connected to the lower end of the portion (44) and is arranged so that the lower end reaches the left end position of the lower end of the front side plate portion (11) as described above.

  Here, in the present embodiment, the upper cut line (3) is configured as an upper fracture guide line, and the lower cut line (4) is configured as a lower fracture guide line.

  Further, the first and third straight portions (31) and (33) in the upper cut line (3) are configured as diagonal straight portions, and the second straight portion (32) is configured as a vertical straight portion. .

  Further, the first, third, and fifth straight portions (41), (43), and (45) in the lower cut line (4) are configured as diagonal straight portions, and the second and fourth straight portions (42) and (44). Is configured as a longitudinal linear portion.

  And in this embodiment, the 2nd, 4th as a height direction straight part in a lower cut line (4) with respect to the 2nd straight part (32) as a height direction straight part in an upper cut line (3). The straight portions (42) and (44) are formed with their positions shifted in the circumferential direction (left and right direction) so as not to be arranged on the same straight line. Specifically, the lower second straight line portion (42) is arranged with its position shifted to the right (one side) with respect to the upper second straight line portion (32), and the lower fourth straight line portion. (44) is arranged with its position shifted to the left (the other side) with respect to the upper second straight line portion (32).

  In the present embodiment, the first and third straight portions (31) and (33) and the first and third and fifth straight portions (41), (43), and (45) as the oblique straight portions are 35 to 35 in the vertical direction. It is preferable to incline at an angle of 60 °, more preferably 40 to 50 °. That is, by setting the inclination angle of each straight line portion (31) (33) (41) (43) (45) within this range, the opening operation of the opening region (10) can be smoothly performed as described later. Can do.

  Here, in the present embodiment, when the front side plate portion (11) is divided into left and right regions with the slit opening start portion (2) and the upper and lower side cut lines (3) and (4) as boundary lines, the left region Is configured as a slit region (10).

  The packaging tool (1) according to the first embodiment configured as described above is for packaging a large product that is vertically long and rectangular in plan view. That is, as shown in FIG. 5, the packaging tool (1) is placed on the packaged product with the packaged product placed on the rectangular pallet (6) corresponding to the bottom shape of the packaged product. It arrange | positions and it arrange | positions so that the 4 side board part (11)-(14) of front and rear, right and left in a packing tool (1) may block | close the front and rear, right and left four surrounding side surfaces in a packed product. Further, a rectangular corrugated cardboard lid (5) corresponding to the shape of the upper end opening is fitted into the upper end opening of the packing tool (1), and the upper end opening of the packing tool (1) is fitted by the lid (5). The part is blocked.

  And in that state, it is tied with a plurality of bands (7) so as to pass through the positions of the lid (5), the right side plate part (12), the pallet (6) and the left side plate part (13), thereby completing the packing. Is.

  Here, in the packing tool (1) of the present embodiment, the rear plate portion (13) is configured as a ground surface (sliding down surface) when loading on a truck or the like, and when unloading or unloading, The packing tool (1) is unloaded from the loading platform or unloaded while the rear plate (13) is in sliding contact with the loading platform.

  On the other hand, when unpacking the packing tool (1) packed with the product as described above, after removing the band (7), as shown in FIG. 2, the operator passes through the upper opening (21). Then, grasp the upper end of the cut-off permission portion (23) with your hand and move it downward while pulling it toward you. By this outward opening operation, the cut lines (24) and (24) on both sides are successively torn downward continuously starting from the upper end, and the cut-off permitting portion (23) is moved to the front plate portion ( 11). In this way, as shown in FIG. 3, the cutting allowance portion (23) is opened, and the entire region of the cut opening start portion (2) is opened.

  Next, the right edge of the slit region (10) is grasped with the hand through the slit opening start portion (2) in the open state, and moved to the left while being pulled forward. As shown in FIG. 4, the opening operation to the outside causes the upper and lower cut lines (3) and (4) to be successively cut toward the left starting from the position on the cut opening start portion (2) side. Then, the slit region (10) in the front plate portion (11) is cut off from the remaining region, and the front plate portion (11) is divided in the circumferential direction (left-right direction).

  Then, the packaging tool (1) can be completely removed from the packaged product by detaching it from the packaged product so that the side plate portions (11) to (14) are sequentially opened outward.

  The operation for removing the lid (5) and the operation for unloading the packed product from the pallet (6) may be performed before unpacking the packing tool (1) or after unpacking. .

  As mentioned above, according to the packing tool (1) of 1st Embodiment, the front side board part (11) of the four side board parts (11)-(14) arrange | positioned on the surrounding 4 surfaces of a packed product. Can be separated in the circumferential direction. For this reason, at the time of unpacking, the front side plate part (11) can be detached and the surrounding four side plate parts (11) to (14) can be removed simply by opening them outward. There is no need for the troublesome work of pulling out from the packaged product or opening the packing tool with a cutter knife or the like, and the unpacking can be performed easily and smoothly.

  Furthermore, in this embodiment, since the front side plate part (11) can be separated by opening the cut region (10) of the front side plate part (11) in the lateral direction (left direction), the operator can Can be unpacked reliably by a simple operation without unreasonableness.

  Moreover, in this embodiment, since the height direction linear part (32) (42) (44) parallel to a height direction is provided in the up-and-down both sides cut line (3) (4), the front side board part (11 ) Is extremely larger than the left-right direction (width direction) dimension, that is, even if the front plate (11) has a shape corresponding to a tall large product, the upper cut line (3) In addition, it can be reliably formed from the slit opening start portion (2) to the upper edge of the front plate portion (11), and the lower cut line (4) is formed from the slit opening portion (2) to the lower edge of the front plate portion (11). It can be reliably formed. Therefore, even if the packing tool (1) has a configuration corresponding to a tall large product, the same effect as described above that the upper and lower cut lines (3) and (4) can be reliably formed and can be easily unpacked. Can be definitely obtained.

  Furthermore, in the present embodiment, the height direction straight line portion (32) of the upper cut line (3) is positioned in the circumferential direction with respect to the height direction straight line portions (42) and (44) of the lower cut line (4). Since the arrangement is shifted, sufficient strength can be ensured. That is, if the straight line in the height direction of the upper cut line (3) and the straight line in the height direction of the lower cut line (4) are arranged on a straight line, the portion is Are arranged in series in the vertical direction, and it is easy to bend and the strength may be lowered. For this reason, when winding a band (6) at the time of packing, for example, the malfunction which bends and bulges outside will generate | occur | produce. Therefore, in the present embodiment, since the positions of the height direction straight portions (32), (42), and (44) are shifted in the left and right direction (circumferential direction), the cut line is arranged in a wide range along the height direction. And can be prevented from being bent carelessly.

  In the present embodiment, the opening start portion (2) is divided into two upper and lower openings (21) and (22), and a cut-off allowable section (23) provided between the openings (21) and (22). Therefore, at the time of unpacking, the cut dimension (23) can be cut and opened to make the opening dimension large and long. Thus, the length of the upper cut line (3) and the lower cut line (4) can be shortened by the amount that the opening size of the cut opening start portion (2) can be increased, and the amount of the cut can be reduced, and unpacking can be performed. Work can be done more easily. Furthermore, since the opening dimension of the slit opening start portion (2) is large, the slit region (10) can be gripped and opened at an appropriate position, and the slit opening operation can be performed more smoothly.

  In the present embodiment, since the folding lines (25) are formed at equal intervals along the length direction of the cutting allowance portion (23), as described above, the cutting allowance portion (23) is provided. When cutting in the step direction, the cutting allowance portion (23) bends outward without difficulty, and the cutting allowance portion (23) can be cut easily and smoothly.

  Moreover, in this embodiment, since the front side plate part (11) in which the cut area (10) is formed is joined to the left side plate part (14) to form a rectangular tube, a high strength surface. As a whole, a decrease in strength can be prevented. That is, the two side plate portions (11) and (14) that are joined together have a portion of the corrugated cardboard structure destroyed by the joining process, and the strength is lower than the side plate portions (12) and (13) that are not joined together. Further, the front side plate portion (11) is formed with a large number of cut lines (24), (3), and (4) for slitting, resulting in a decrease in strength. For this reason, if a large number of slit lines are formed in the right side plate portion (12) or the rear plate portion (13) that are not joined, the strength decreases to the side plate portion, and the four side plate portions Among them, the strength of the three side plate portions will decrease. In other words, there is only one high-strength side plate portion, which may reduce the strength as a whole. On the other hand, in this embodiment, since many cut lines (24), (3), and (4) are formed for slitting in the joined side plate portions (11), two of the four side plate portions are formed. The strength of the remaining two side plate portions (12) and (13) can be maintained high only by reducing the strength of the side plate portions (11) and (14), and the strength can be prevented from decreasing as a whole. it can.

  In addition, in the present embodiment, the high-strength rear side plate (13) is configured as a sliding surface (grounding surface) when unloading from the truck bed, so Even if the side plate portion (13) is slidably brought into sliding contact with the truck bed, it is possible to effectively prevent the rear side plate portion (13) from being damaged, and the loading and unloading work can be performed efficiently and smoothly.

  In particular, in this embodiment, since the band (6) is disposed on the left and right side plate portions (12) and (14) during packaging, the band (6) is disposed on the rear plate portion (13) as a sliding surface. There is nothing to do. For this reason, when the rear side plate portion (13) is brought into sliding contact with the loading platform, it is possible to prevent a problem that the band (6) is worn out.

  Further, the upper end position of the upper cut line (3) at the upper end edge of the front plate part (11) and the lower end position of the lower cut line (4) at the lower end edge of the front plate part (11) are easily bent. However, in this embodiment, the upper end position of the upper cut line (3) and the lower end position of the lower cut line (4) are set to a corner portion between the front plate portion (11) and the left plate portion (14), that is, corrugated cardboard. Is placed in a position to bend. For this reason, there is no problem even if the end positions of the cut lines (3) and (4) are easy to bend. Rather, the side plate portions can be bent without difficulty, and the packaging tool (1) can be easily manufactured. it can.

  Furthermore, in this embodiment, the 3rd straight part (33) of the upper side cut line (3) which reaches the upper end edge of the front side board part (11) is arrange | positioned diagonally, and an upper side cut line (3) is a front side board part. Since it is cut in the oblique direction from the upper edge of (11), sufficient strength can be obtained with certainty. That is, when the upper cut line (3) is linearly cut in the height direction (vertical direction) from the upper end edge of the front plate part (11), it is easy to bend at the cut part. In the embodiment, since the upper cut line (3) is cut obliquely from the upper end edge of the front plate part (11), the cut part is not easily bent and sufficient strength can be obtained with certainty. .

  Similarly, the fifth straight portion (45) of the lower cut line (3) reaching the lower end edge of the front plate portion (11) is arranged in an oblique direction, and the lower cut line (3) is moved to the front plate portion (11). The lower cut line (3) is linearly cut in the vertical direction from the lower edge of the front plate portion (11). Therefore, it is difficult to bend and sufficient strength can be obtained more reliably.

  Moreover, since the side plate part (11)-(14) is comprised by the reinforced corrugated cardboard of 2 layer structure, the intensity | strength of side plate part (11)-(14) itself improves the packing tool (1) of this embodiment. As a result, the strength of the entire packaging tool can be further improved.

<Second Embodiment>
FIG. 7 is a developed view showing a corrugated cardboard packaging tool (1a) according to a second embodiment of the present invention. As shown in the figure, the packing device (1a) includes a first straight line portion (31a) and a second straight line portion (31a) in which the upper cut line (3a) in the front plate portion (11) is arranged in order from the lower side. (32a).

  The first straight portion (31a) is configured as a height-direction straight portion that goes straight in a direction parallel to the height direction, and is arranged so that the lower end reaches the upper opening (21).

  The second straight portion (32a) is configured as an oblique straight portion that goes straight in a direction inclined at 45 ° with respect to the height direction, the lower end is connected to the upper end of the first straight portion (31a), and The upper end is arranged so as to reach a position slightly to the left of the upper end edge of the front plate part (11).

  Furthermore, in the packing tool (1a) of the second embodiment, the length in the vertical direction of the slit opening start portion (2) in the front plate (11) is set shorter than that of the packing tool (1) of the first embodiment. Has been.

  In the packaging device (1a) of the second embodiment, since the other configuration is substantially the same as that of the first embodiment, the same or corresponding parts are denoted by the same or corresponding reference numerals, and redundant description is omitted. To do.

  Also in the packing tool (1a) of this 2nd Embodiment, the same effect can be obtained similarly to the said 1st Embodiment.

<Modification>
In the above-described embodiment, the cut line (breaking guide line) is formed in a zipper shape in which a large number of short cuts with curved ends are arranged side by side on the line. In the invention, the shape of the cut line is not particularly limited. For example, the cut line (breaking induction line) may be formed in the form of perforations arranged in series on the line with a large number of short cuts in a linear shape, or a large number of needle hole-like holes, You may make it form in the structure arrange | positioned along with the line.

  Further, in the above embodiment, the opening start portion (2) is composed of the openings (21) and (22) and the cutting allowance portion (23), and the uncut opening portion (23) is cut off at the time of unpacking. (21) The whole area is opened together with (22). However, the present invention is not limited to this, and in the present invention, the opening start portion is constituted by a portion opened at least after the opening operation is started (when unpacking). In other words, what is necessary is just to comprise at least any one of the part opened and the part which can be opened. Here, the opened part is a part opened before the packing operation, and corresponds to the openings (21), (22) and the like in the above embodiment. The portion that can be opened is a portion that is closed before the packing operation, but is opened by performing a predetermined operation after the start of unpacking, such as the cut-off permissible portion (23) in the above embodiment. It corresponds to. The portion that can be opened other than that is a portion that is cut into a U-shape or an L-shape, and can be configured by a portion that can be opened by being pushed or bent when unpacking. Needless to say, the slit opening start portion may be configured by only the opened portion, may be configured by only the portion that can be opened, or may be configured by combining the opened portion and the portion that can be opened. You may do it.

  Further, in the above embodiment, the cut lines (3) and (4) as the upper and lower both-side break guide lines are configured by a plurality of straight portions, but the present invention is not limited thereto, and in the present invention, each break guide line is May be configured by a single straight line portion, or a gently curved curve portion may be included in the break guide line. When including a curved portion, the breakage guide line may be constituted by a single curved portion, or may be constituted by a plurality of curved portions having different curvatures, or 1 to a plurality of curved portions, and 1 to You may make it comprise combining a some linear part.

  In the above embodiment, for convenience of explanation, the front side plate portion (11) is configured as a side plate portion for unpacking that is torn during unpacking. However, the present invention is not limited to this, and in the present invention, for unpacking. The position where the side plate portion is arranged is not limited, and any side plate portion can be configured as the unpacking side plate portion as long as it is a side plate portion arranged around.

Furthermore, in the said embodiment, although the side plate part of 4 sheets was connected in the circumferential direction, it demonstrated as an example the case where this invention was applied to the packaging tool by which the side plate part was each provided in the surrounding 4 surface. However, the present invention is not limited thereto, and the present invention can also be applied to a packaging tool in which three or five or more side plate portions are continuously provided in the circumferential direction. However, in consideration of form stability and the like, the present invention is preferably applied to a packing tool in a form in which the surrounding four surfaces are closed by four side plate portions as in the above embodiment.

  The corrugated cardboard packing tool of the present invention can be used for packing a product when the product is transported or stored.

It is an expanded view which shows the cardboard packaging tool which is 1st Embodiment of this invention. It is a perspective view which shows the cutting permissible part in the state in the middle of cutting in the packing tool of 1st Embodiment. It is a perspective view shown in the state where the cut opening start part was opened in the packing implement of a 1st embodiment. It is a perspective view which shows an unpacking state in the packing tool of 1st Embodiment. It is a perspective view which shows a packing state in the packing tool of 1st Embodiment. It is a figure which expands and shows the upper part of the cutting | disconnection permission part in the packing tool of 1st Embodiment, Comprising: The figure (a) is a front view, The figure (b) is a side view shown in the state in the middle of cutting. It is an expanded view which shows the cardboard packaging tool which is 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1a ... Packing tool 11-14 ... Side plate part 2 ... Opening start part 21,22 ... Opening part 23 ... Cut-off permissible part 24 ... Middle cut line (intermediate break guide line)
25 ... bending line 3 ... upper fracture guide line 31, 32a, 45 ... straight line part (diagonal straight line part)
31a, 32, 42, 44 ... straight part (height direction straight part)

Claims (10)

Three or more side plate portions are continuously provided in the circumferential direction so that the periphery of the packaged product can be closed, and each side plate portion is configured by corrugated cardboard with the step direction corresponding to the height direction of the packaged product. A cardboard packaging tool,
Any one side plate portion of the plurality of side plate portions is configured as an unpacking side plate portion,
The unpacking side plate is provided with a slit opening start portion opened at the time of unpacking at a position closer to one side in the circumferential direction in the intermediate portion in the height direction,
On the unpacking side plate part, an upper fracture guide line is provided along an oblique direction from a position near the other end in the circumferential direction of the upper end edge to the upper end of the slit opening start part,
On the unpacking side plate portion, a lower break guide line is provided along a diagonal direction from a position closer to the other end in the circumferential direction of the lower end edge to a lower end of the slit opening start portion,
The unwrapping side plate is divided in the circumferential direction with the upper and lower side breakage guide lines and the cut start part as a boundary line, and the other side area is configured as a cut area,
Starting from a portion corresponding to the opening start portion in the opened state, the opening region is opened outwardly, whereby the unpacking side plate portion is broken along the upper and lower both-side break guide lines. A corrugated cardboard packaging tool configured to be cut off in the circumferential direction.   The corrugated cardboard packaging tool according to claim 1, wherein the cut opening start portion is configured as an opening portion that is partially opened in advance, and the remaining portion is configured as a cut allowance portion that can be opened by a cut operation. .   The corrugated cardboard packaging tool according to claim 1 or 2, wherein a height direction straight line portion parallel to the height direction is provided on a part of at least one of the upper and lower both side break guide lines.   A height direction straight line portion parallel to the height direction is provided in each part of each of the upper and lower both-side break guide lines, and the height direction straight line portions are arranged with their positions shifted in the circumferential direction. Item 5. A cardboard packaging tool according to any one of Items 1 to 3.   The corrugated packaging tool according to any one of claims 1 to 4, wherein an upper end of the upper breaking guide line is disposed at an end on the other side of an upper end edge of the unpacking side plate.   The corrugated cardboard packaging tool according to claim 5, wherein an oblique linear portion that is inclined with respect to a height direction is provided on an upper portion including an upper end of the upper fracture guide line.   The cardboard packaging tool according to any one of claims 1 to 6, wherein a lower end of the lower fracture guide line is disposed at an end on the other side of the lower end edge of the unpacking side plate.   The corrugated cardboard packaging tool according to claim 7, wherein an oblique straight line portion that is inclined with respect to a height direction is provided on a lower side portion including a lower end of the lower fracture guide line. The cut opening start portion is provided at least in part with a cutting allowance portion that can be opened by a cutting operation,
The cut-off permission portion is formed in a vertically long strip shape extending in the height direction, and an intermediate break guide line is provided along both side edges of the cut-off permission portion,
The cutting allowance portion is configured to be cut by being pulled outward from either one of its upper and lower ends,
The corrugated cardboard packaging tool according to any one of claims 1 to 8, wherein a plurality of bending lines extending in the circumferential direction are provided at intervals in the height direction in the cut-off permission portion.   Among each of the adjacent side plate portions, any one of the side plate portions is joined and connected, and one of the two joined side plate portions is configured as the unpacking side plate portion. Item 10. A cardboard packaging tool according to any one of Items 1 to 9.

Images