JP5977861B2 - Bulk packaging box - Google Patents

Description

  The present invention relates to a bulk packaging box for packing irregular shapes such as liquids, powders, and granules.

  Conventionally, as a container used when transporting an indefinite shape such as a liquid, a powder, or a granule, there is, for example, a heavy cardboard container described in Patent Document 1 below. The heavyweight container made of corrugated cardboard described in the following Patent Document 1 is a corrugated body having a regular octagonal open end, a corrugated top cover / bottom plate covering both end surfaces of the torso, and a radial form from the top cover / bottom plate. Each of the joining pieces protruding and formed on the body is composed of a fastening band or the like for fixing the upper lid / bottom plate to the body by tightening the outer side of the body.

  According to the following Patent Document 1, the heavy-weight container made of corrugated cardboard having such a constituent element is “a metal drum can or a plastic container for heavy goods that has been conventionally used by appropriately adding a water-resistant function or the like. In particular, the main component of this container is made of paper corrugated cardboard, so that it can be incinerated after use, and at a low cost. Because it can be provided, the packaging cost can be greatly reduced, and it is suitable as a one-way container. "

Japanese Patent Laid-Open No. 3-124545

  However, since the main body of the container is made of paper cardboard, the heavy container made of cardboard described in the above-mentioned Patent Document 1 does not contain liquids, powders, granules, etc. filled in the main body of the container. Depending on the fixed form, the main body of the container may be deformed into strain.

  In particular, the peripheral side of the body, which is one of the main components of this container, has a bending strength that varies depending on the location, so the vicinity of the center of the peripheral side may swell greatly. In such cases, load collapse occurs. There is a fear. On the other hand, the cylindrical cardboard container has the same bending strength on the peripheral side surface, but it becomes difficult to handle the load alone.

  Then, this invention is made | formed in view of the point mentioned above, and makes it a subject to provide the bulk packaging box which prevents that the trunk | drum made from a corrugated board or a corrugated board box changes into distortion.

  The invention according to claim 1, which has been made to solve this problem, is a bulk packaging box, having both sides open and having a polygonal shape of a quadrangle or more, and forming each side of the polygonal shape. A corrugated cardboard body provided with a plurality of creases, an interior inscribed in the body and having a cylindrical shape with an opening formed in a polygonal shape close to a circle, and a plurality of inwardly creased lines are provided. A cardboard sleeve, a pair of lid boxes closing both end faces of the fuselage, and a binding for fixing the pair of lid boxes to the fuselage with the pair of lid boxes closing both end faces of the fuselage An inner bag made of a flexible material that is accommodated in a space partitioned by the band and the pair of lid boxes and the sleeve and is filled with an indeterminate shape, and the inner bag includes the pair of lid boxes and the Before storing in the space partitioned by the sleeve The body and the sleeve are folded through respective creases and inner crease lines, respectively, and after the inner bag is accommodated in a space partitioned by a pair of lid boxes and the sleeve, the sleeve The inner wall surface is characterized in that the opening of the sleeve is formed in a polygonal shape close to a circle and has a cylindrical shape, and supports the indefinite shape in the inner bag with a uniform reaction force.

  The invention according to claim 2 is the bulk packaging box according to claim 1, wherein the body has a seam provided at one end in the flow direction and a plurality of creases for forming each side surface. The other end in the flow direction is composed of a pair of body pieces whose one side is a side, and the sleeve is provided with seams at both ends in the flow direction and a plurality of inward crease lines at equal intervals in the width direction. It is composed of a pair of sleeve pieces provided along the same, and for the pair of body pieces, a joint at one end in the flow direction of one body piece and a side surface at the other end in the flow direction of the other body piece are joined. And joining the seam at one end in the flow direction of the other fuselage piece and the side surface at the other end in the flow direction of the one fuselage piece to produce the fuselage. Picked By joining the joint flap of joint flap and the other of the sleeve piece piece, that the sleeve is produced, characterized by.

  The invention according to claim 3 is the bulk packaging box according to claim 2, wherein notches are formed on both sides in the width direction of the one body piece and the other body piece, Cut portions are formed on both sides in the width direction of both joints of the sleeve piece and both joints of the other sleeve piece, and when the sleeve is manufactured, The trunk portion is overlapped with the cut portion of the joint margin of the other sleeve piece, and the dimension in the flow direction of the joint margin of the pair of sleeve pieces is longer than the equal interval between the inner folding lines of the pair of sleeve pieces, When the sleeve is mounted on the sleeve, the periphery of the notch of the fuselage and the periphery of the notch of the sleeve are bonded while the notch of the fuselage is overlapped with the notch of the sleeve. It is characterized by.

  The invention according to claim 4 is the bulk packaging box according to claim 2 or claim 3, wherein the pair of sleeve pieces are provided on both sides in the width direction of the joint margin provided at both ends in the flow direction. And convex portions are formed on both sides in the width direction in the vicinity of the center between joints provided at both ends in the flow direction, and the pair of lid boxes are formed with peripheral grooves when the synthetic resin is molded, Each convex part of the sleeve piece and both ends in the width direction of the pair of body pieces are fitted into the peripheral grooves of the pair of lid boxes.

That is, in the bulk packaging box which is the invention according to claim 1, a double structure is adopted in which a cylindrical sleeve is placed in a body having a polygonal shape of a quadrangle or more. Furthermore, an inner bag made of a flexible material filled with an indefinite shape is accommodated in a space partitioned by a pair of lid boxes and sleeves. In the space partitioned by the pair of lid boxes and the sleeve, the cardboard sleeve is evenly pressed by the irregular shape in the circumferential direction through the inner bag made of the flexible material.
In contrast, a cardboard sleeve has a polygonal shape that is closer to a circle than a square or octagon, so there are many surfaces to be received, and one surface has a short distance between ruled lines, so the bending strength is low. It is getting stronger. For this reason, the indefinite form wrapped in the inner bag made from a flexible material can be supported with a relatively uniform strong reaction force.
This prevents distortion of the cardboard sleeve inside the double structure. Further, the cardboard sleeve inside the double structure is inscribed with the cardboard body outside the double structure. As a result, the corrugated cardboard sleeve spreads between the sleeve and the sleeve constituting the double structure, so that distortion of the corrugated cardboard body outside the double structure is also prevented. Therefore, the invention according to claim 1 is a bulk packaging box that prevents the cardboard body from being deformed into distortion.

  Moreover, in the bulk packaging box which is the invention according to claim 2, the trunk is provided with the seam at one end in the flow direction and provided with a plurality of creases for forming each side surface, whereby the other end in the flow direction is provided. Is composed of a pair of body pieces that are one side of the side surface. For a pair of fuselage pieces, a seam at one end in the flow direction of one fuselage piece is joined to a side surface at the other end in the flow direction of the other fuselage piece and a joint at one end in the flow direction of the other fuselage piece. The fuselage is produced by joining the core and the side surface at the other end in the flow direction of one fuselage piece. Further, the sleeve includes a pair of sleeve pieces in which seam allowances are provided at both ends in the flow direction, and a plurality of inward crease lines are provided at equal intervals along the width direction. About a pair of sleeve pieces, a sleeve is produced by joining the joint margin of one sleeve piece and the joint margin of the other sleeve piece. Thereby, since the trunk is produced by joining a pair of trunk pieces, it can be folded using crease. Further, since the sleeve is manufactured by joining a pair of sleeve pieces, it can be folded using an inner folding ruled line. Therefore, the invention according to claim 2 is a bulk packaging box capable of folding the body and the sleeve which are the components of the double structure.

  Moreover, in the bulk packaging box which is invention which concerns on Claim 3, a notch part is formed in the both sides of the width direction of one fuselage piece and the other fuselage piece. In addition, cut portions are formed on both sides in the width direction of both joint margins of one sleeve piece and on both sides in the width direction of both joint margins of the other sleeve piece. Then, when the sleeve is manufactured, the joint cut portion of one sleeve piece and the joint cut portion of the other sleeve piece are overlapped. Further, when the sleeve is installed in the body, the periphery of the incision portion of the body and the periphery of the incision portion of the sleeve are bonded while the incision portion of the body and the incision portion of the sleeve are overlapped. By such adhesion, the relative positional relationship in which the sleeve is built in the body is determined. In this respect, in the pair of sleeve pieces, the dimension in the flow direction of the seam where the cut portions are formed is longer than the equal interval between the inner folded ruled lines. Therefore, in the invention according to claim 3, since the seam allowance of the sleeve to which the periphery of the cut portion of the fuselage is bonded is the widest among the sleeve pieces, It is a bulk packaging box with a stable positional relationship.

  Moreover, in the bulk packaging box which is the invention according to claim 4, the pair of sleeve pieces are formed with convex portions on both sides in the width direction of the seam provided at both ends in the flow direction, and at both ends in the flow direction. Convex portions are formed on both sides in the width direction near the center between the provided seams. The pair of lid boxes are formed with peripheral grooves when they are molded with synthetic resin. And each convex part of a pair of sleeve pieces and the both ends of the width direction of a pair of body piece are engage | inserted by the peripheral groove | channel of a pair of lid box. In this respect, since the convex portions are formed on both sides of the sleeve produced by joining the pair of sleeve pieces, the convex portions formed on both sides of the sleeve are fitted into the peripheral grooves of the pair of lid boxes. Moreover, the both ends of the width direction of the trunk | drum produced by joining a pair of trunk | drum pieces are engage | inserted by the peripheral groove | channel of a pair of lid box. Therefore, the invention according to claim 4 has a double structure configuration by using the convex portions of the pair of sleeve pieces and the widthwise ends of the pair of body pieces to be fitted into the peripheral grooves of the pair of lid boxes. It is a bulk packaging box which prevents the position of the body and sleeve which are elements from shifting.

It is a perspective view showing bulk packaging box 1 concerning a 1st embodiment. It is a perspective view showing the inner bag 7 used with the bulk packaging box 1 which concerns on 1st Embodiment. It is an exploded perspective view showing bulk packing box 1 concerning a 1st embodiment. It is a top view showing the trunk piece 9 of the bulk packaging box 1 which concerns on 1st Embodiment. It is a top view showing sleeve piece 10 of bulk packaging box 1 concerning a 1st embodiment. It is a perspective view showing bulk packaging box 101 concerning a 2nd embodiment. It is a perspective view showing the inner bag 104 used with the bulk packaging box 101 which concerns on 2nd Embodiment. It is a disassembled perspective view showing the bulk packaging box 101 which concerns on 2nd Embodiment. It is a perspective view showing the state where sleeve 105 was built in corrugated cardboard box 102 of bulk packaging box 101 concerning a 2nd embodiment. It is an expanded view showing the cardboard box 102 of the bulk packaging box 101 which concerns on 2nd Embodiment. It is a top view showing the sleeve piece 107 of the bulk packaging box 101 which concerns on 2nd Embodiment. It is a top view showing bottom pad 106 of bulk packing box 101 concerning a 2nd embodiment.

[1. First Embodiment]
Hereinafter, with reference to FIG. 1 thru | or FIG. 5, the bulk packaging box 1 which concerns on 1st Embodiment is demonstrated in detail.

  As illustrated in FIG. 1, the bulk packaging box 1 according to the first embodiment includes a cardboard body 2, a pair of plastic lid boxes 3, and a pair of plastic binding bands 5. Moreover, the bulk packaging box 1 which concerns on 1st Embodiment is provided with the plastic inner bags 7 as represented to FIG. Furthermore, as shown in FIG. 3, the bulk packaging box 1 according to the first embodiment includes a cardboard sleeve 8.

  The body 2 has an octagonal cylindrical shape in which both end faces 2A and 2B are opened (see FIG. 3). In addition, the code | symbol 2C of FIG. 3 represents a cut portion of the body 2. 3 represents the periphery of the cut portion 2D of the body 2. The pair of lid boxes 3 covers both end surfaces 2A and 2B of the body 2 by covering both end surfaces 2A and 2B of the body 2 (see FIGS. 1 and 3). 3 is a peripheral groove of the pair of lid boxes 3. The pair of binding bands 5 is a so-called “PP band”, and fixes the pair of lid boxes 3 to the body 2 with the pair of lid boxes 3 closing both end faces 2A and 2B of the body 2. (See FIG. 1). Thus, a space 8A partitioned by the pair of lid boxes 3 and the sleeve 8 is formed (see FIG. 3).

  The sleeve 8 is built in the body 2 with an inscribed relationship and has a cylindrical shape (see FIG. 3). In addition, the code | symbol 8B of FIG. 3 represents the periphery of the cut portion 8B of the sleeve 8. The inner bag 7 is a so-called “polyethylene bag” having a flexible property, and is filled with an indeterminate shape such as liquid, powder, granule or the like. Furthermore, the inner bag 7 is accommodated in the space 8A shown in FIG.

  The body 2 is composed of a pair of body pieces 9 shown in FIG. Each trunk piece 9 is provided with a joint 9A and four creases 9B. The joint allowance 9A is provided at one end in the flow direction 9C. The four creases 9B are ruled lines for forming the side surfaces 2C (see FIG. 3). Accordingly, in each body piece 9, the other end in the flow direction 9C becomes one side of the side surface 2C (see FIG. 3).

  For the pair of body pieces 9, the seam 9 </ b> A at one end in the flow direction 9 </ b> C of one body piece 9 and the side surface 2 </ b> C at the other end in the flow direction 9 </ b> C of the other body piece 9 are joined together. The body 2 is produced by joining the seam 9A at one end in the flow direction 9C of the piece 9 and the side surface 2C at the other end in the flow direction 9C of one body piece 9.

  The sleeve 8 is composed of a pair of sleeve pieces 10 shown in FIG. Each sleeve piece 10 is provided with a seam 10A and 21 inward crease lines 10B. The joint allowance 10A is provided at both ends of the flow direction 10C. The inward crease lines 10B are provided along the width direction 10D at equal intervals.

  As for the pair of sleeve pieces 10, the sleeve 8 is produced by joining the joint allowance 10 </ b> A of one sleeve piece 10 and the joint allowance 10 </ b> A of the other sleeve piece.

  In the pair of body pieces 9 shown in FIG. 4, cut portions 2D (see FIG. 3) of the body 2 are formed on both sides of the one body piece 9 and the other body piece 9 in the width direction 9D.

  As for the pair of sleeve pieces 10 shown in FIG. 5, the notch portions 8B of the sleeve 8 on both sides in the width direction 10D of the joint margin 10A of one sleeve piece 10 and the joint margin 10A of the other sleeve piece 10 ( 3) is formed.

  The dimension 10F in the flow direction 10C of the joint allowance 10A of each sleeve piece 10 is longer than the equal interval 10G between the inwardly folded ruled lines 10B of the respective sleeve pieces 10.

  When the sleeve 8 is produced, the notch 8B in the joint 10A of the one sleeve piece 10 and the notch 8B in the joint 10A of the other sleeve piece 10 are overlapped. Further, when the sleeve 8 is installed in the body 2 (see FIG. 3), the periphery of the notch 2D of the body 2 is overlapped with the notch 2D of the body 2 and the notch 8B of the sleeve 8 being overlapped. 2E and the periphery 8C of the notch 8B of the sleeve 8 are bonded together.

  For the pair of sleeve pieces 10 shown in FIG. 5, the center of the joint 10 </ b> A provided at both ends in the width direction 10 </ b> D of the joint 10 </ b> A provided at both ends of the flow direction 10 </ b> C and at both ends of the flow direction 10 </ b> C. Convex portions 10H are respectively formed on both sides in the vicinity in the width direction 10D.

  On the other hand, the peripheral groove 3A is formed in the pair of lid boxes 3 shown in FIG. 3 when the pair of lid boxes 3 is molded with synthetic resin.

  And when the bulk packaging box 1 which concerns on 1st Embodiment is assembled, both ends 9E (refer FIG. 4) of each convex part 10H of a pair of sleeve pieces 10 and the width direction 9D of a pair of trunk | drum 9 are shown. It fits in the peripheral groove 3A of the pair of lid boxes 3.

  As described above in detail, the bulk packaging box 1 according to the first embodiment employs a double structure in which the cylindrical sleeve 8 is inserted into the body 2 having an octagonal shape. Further, a plastic inner bag 7 filled with an indefinite shape is accommodated in a space 8A partitioned by a pair of lid box 3 and sleeve 8. In the space 8A partitioned by the pair of lid box 3 and the sleeve 8, the cardboard sleeve 8 is evenly pressed by the irregular shape in the circumferential direction through the plastic inner bag 7.

  On the other hand, the sleeve 8 made of corrugated cardboard has a shape closer to a circle than a quadrangle or octagon, and therefore has a large number of receiving surfaces, and one surface also has a distance between the ruled lines 10B (equal intervals). Since 10G) is short, the bending strength is high. For this reason, it is possible to support the irregularly shaped object wrapped in the plastic inner bag 7 with a relatively uniform strong reaction force. This prevents distortion of the corrugated sleeve 8 inside the double structure. Furthermore, the cardboard sleeve 8 inside the double structure is inscribed in relation to the cardboard body 2 outside the double structure. As a result, the corrugated cardboard sleeve 8 spreads between the sleeve 2 and the body 2 constituting the double structure, so that distortion of the corrugated cardboard body 2 outside the double structure is also prevented. Therefore, the bulk packaging box 1 according to the first embodiment can prevent the corrugated cardboard body 2 from being deformed into distortion.

  Further, in the bulk packaging box 1 according to the first embodiment, the body 2 is provided with four creases 9B for forming each side surface 2C while the joint allowance 9A is provided at one end in the flow direction 9C, The other end of the flow direction 9C is composed of a pair of body pieces 9 that are one side of the side surface 2C. For the pair of body pieces 9, the seam allowance 9 </ b> A at one end in the flow direction 9 </ b> C of one body piece 9 and the side surface 2 </ b> C at the other end in the flow direction 9 </ b> C of the other body piece 9 are joined. The body 2 is manufactured by joining the seam allowance 9A at one end of the flow direction 9C of 9 and the side surface 2C at the other end of the flow direction 9C of one body piece 9.

  Further, the sleeve 8 includes a pair of sleeve pieces 10 in which joints 10A are provided at both ends in the flow direction 10C and 21 inward crease lines 10B are provided at equal intervals along the width direction 10D. For the pair of sleeve pieces 10, the sleeve 8 is manufactured by joining the joint allowance 10 </ b> A of one sleeve piece 10 and the joint allowance 10 </ b> A of the other sleeve piece 10.

  Thereby, since the trunk | drum 2 is produced by joining a pair of trunk | drum pieces 9, it is possible to fold using the crease 9B. Further, since the sleeve 8 is manufactured by joining a pair of sleeve pieces 10, the sleeve 8 can be folded using the inner folding ruled line 10 </ b> B. Therefore, the bulk packaging box 1 according to the first embodiment can fold the body 2 and the sleeve 8 which are components having a double structure.

  But you may provide the notch part only for folding with respect to a pair of trunk | drum piece 9 or a pair of sleeve piece 10. FIG.

  Moreover, in the bulk packaging box 1 which concerns on 1st Embodiment, the cut | notch part 2D is formed in the both sides of the width direction 9D of one fuselage piece 9 and the other fuselage piece 9. FIG. In addition, cut portions 8B are formed on both sides in the width direction 10D of the joint margin 10A of one sleeve piece 10 and on both sides in the width direction 10D of the joint margin 10A of the other sleeve piece 10. When the sleeve 8 is manufactured, the cut portion 8B in the joint margin 10A of one sleeve piece 10 and the cut portion 8B in the joint margin 10A of the other sleeve piece 10 are overlapped. Further, when the sleeve 8 is installed in the body 2, the notch 2 </ b> E around the notch 2 </ b> D of the body 2 and the sleeve 8 are cut while the notch 2 </ b> D of the body 2 and the notch 8 </ b> B of the sleeve 8 are overlapped. The periphery 8C of the insert portion 8B is adhered.

  By such adhesion, the relative positional relationship in which the sleeve 8 is housed in the body 2 is determined. In this regard, in the pair of sleeve pieces 10, the dimension 10F in the flow direction 10C of the joint 10A in which the cut portion 8B is formed is longer than the equal interval 10G between the inner folding lines 10B. Therefore, in the bulk packaging box 1 according to the first embodiment, since the joint margin 10A of the sleeve 8 to which the periphery 2E of the notch 2D of the body 2 is bonded is the widest among the sleeve pieces 10, the double structure The relative positional relationship between the body 2 as a component and the sleeve 8 is stabilized.

  Moreover, in the bulk packaging box 1 which concerns on 1st Embodiment, while a pair of sleeve pieces 10 have convex part 10H formed in the both sides in width direction 10D of joint margin 10A provided in the both ends of the flow direction 10C, flow Convex portions 10H are formed on both sides in the width direction 10D in the vicinity of the center between the joints 10A provided at both ends in the direction 10C. The pair of lid boxes 3 are formed with a peripheral groove 3A when synthetic resin molding is performed. Then, in each of the peripheral grooves 3A of the pair of lid boxes 3, the convex portions 10H of the pair of sleeve pieces 10 and both ends 9E of the pair of body pieces 9 in the width direction 9D are fitted.

  In this respect, since the convex portions 10H are formed on both sides of the sleeve 8 produced by joining the pair of sleeve pieces 10 to each other, the convex portions 10H formed on both sides of the sleeve 8 constitute the pair of lid boxes 3. It is fitted in the peripheral groove 3A. Further, both ends 9E in the width direction 9D of the body 2 produced by joining the pair of body pieces 9 are fitted into the peripheral grooves of the pair of lid boxes 3. Therefore, in the bulk packaging box 1 according to the first embodiment, the projections 10H of the pair of sleeve pieces 10 and the ends 9E in the width direction 9D of the pair of body pieces 9 are fitted into the peripheral grooves 3A of the pair of lid boxes 3. By utilizing this fact, it is possible to prevent the positions of the body 2 and the sleeve 8 that are constituent elements of the double structure from being displaced.

In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the meaning.
For example, the body 2 has an octagonal shape with a strong compressive strength in the vertical direction, but may be a polygonal shape that is a quadrangle or more. However, in such a case, the shape of the pair of lid boxes 3 is also matched to the shape of the body 2.

  The material of the pair of lid boxes 3 is plastic, but it may be cardboard. However, in consideration of the fact that the load acting on the lid box 3 below is substantially equal to the weight of the inner bag 7 filled with the irregular shape, the weight of the inner bag 7 filled with the irregular shape is relatively large. Then, it is desirable to use reinforced cardboard.

  The material of the pair of binding bands 5 is made of plastic, but may be a string made of cloth, hemp, chemical fiber, paper, leather, or the like.

[2. Second Embodiment]
Hereinafter, with reference to FIG. 6 thru | or FIG. 12, the bulk packaging box 101 which concerns on 2nd Embodiment is demonstrated in detail.

  As shown in FIG. 6, the bulk packaging box 101 according to the second embodiment is obtained by bonding the upper and lower sides of the cardboard box 102 with the packing tape 103. The bulk packaging box 101 according to the second embodiment includes a plastic inner bag 104 as shown in FIG. Furthermore, as shown in FIG. 8, the bulk packaging box 101 according to the second embodiment includes a cardboard sleeve 105 and a cardboard bottom pad 106 in addition to the cardboard box 102.

  The cardboard box 102 has four upper flaps 102A and four lower flaps 102B. These upper and lower flaps 102A and 102B are butt flaps designed to butt at the center. Further, the cardboard box 102 is provided with a pair of handle holes 102C. The pair of handle holes 102C are of the U type.

  The sleeve 105 has a cylindrical shape. Further, as shown in FIG. 9, the sleeve 105 is in a state in which the four closed lower flaps 102B (see FIG. 8) are bonded together by the packing tape 103 and the four upper flaps 102A are opened. In a certain cardboard box 102, the interior is inscribed in an inscribed relationship. Thus, when the sleeve 105 is installed in the cardboard box 102, the bottom pad 106 (see FIG. 8) is provided between the sleeve 105 and the four closed lower flaps 102B (see FIG. 8). Intervene.

  When the four upper flaps 102A of the cardboard box 102 are closed, a space 105A (see FIG. 9) partitioned by the upper and lower flaps 102A and 102B of the cardboard box 102 and the sleeve 105 is formed. The inner bag 104 is a so-called “polyethylene bag” having a flexible property, and is filled with an indeterminate shape such as a liquid, a powder, or a granule. Furthermore, the inner bag 104 is accommodated in the space 105A shown in FIG.

  After the inner bag 104 is accommodated in the space 105A shown in FIG. 9, when the four upper flaps 102A are bonded together with the packing tape 103, the second embodiment as shown in FIG. The bulk packaging box 101 is obtained.

  When the cardboard box 102 is expanded, as shown in FIG. 10, a joint allowance 102D, four creases 102E, two scores 102F, and a pair of handle holes 102C are provided. The two scores 102F are ruled lines for forming the upper and lower flaps 102A and 102B. That is, the corrugated cardboard box 102 is a kind of corrugated cardboard box having one piece, upper and lower flaps 102A and 102B, and a seam allowance 102D. A corrugated board 102G for reinforcing the handle hole 102C is bonded to the periphery of the pair of handle holes 102C.

  The sleeve 105 includes a sleeve piece 107 shown in FIG. The sleeve piece 107 is provided with a joint allowance 107A and 40 inward crease lines 107B. The joint allowance 107A is provided at one end of the flow direction 107C. The 40 inward fold ruled lines 107B are ruled lines for forming the side surfaces 107D. The inward crease lines 107B are provided along the width direction 107F at equal intervals 107E.

  Thus, in the sleeve piece 107, the other end in the flow direction 107C becomes one side of the side face 107D. Then, the sleeve 105 is manufactured by joining the joint 107A at one end in the flow direction 107C of the sleeve piece 107 and the side surface 107D at the other end in the flow direction 107C.

  FIG. 12 is a plan view of the bottom pad 106.

  As described above in detail, the bulk packaging box 101 according to the second embodiment employs a double structure in which the cylindrical sleeve 105 is placed in the cardboard box 102. Further, a plastic inner bag 104 filled with an indefinite shape is accommodated in a space 105 A partitioned by the upper and lower flaps 102 A and 102 B of the cardboard box 102 and the sleeve 105. In the space 105A partitioned by the upper and lower flaps 102A and 102B of the cardboard box 102 and the sleeve 105, the cardboard sleeve 105 is evenly pressed by an irregular shape in the circumferential direction through the plastic inner bag 104. The

  On the other hand, since the shape of the opening of the corrugated cardboard sleeve 105 is a polygon that is closer to a circle than a square or octagon, there are many receiving surfaces (each side surface 107D), and one surface (side surface 107D). In addition, since the distance between the inner folding ruled lines 107B (equal interval 107E) is short, the bending strength is increased. For this reason, it is possible to support the irregularly shaped object wrapped in the plastic inner bag 104 with a relatively uniform strong reaction force. This prevents distortion of the corrugated sleeve 105 inside the double structure. Further, the corrugated sleeve 105 inside the double structure is inscribed in relation to the cardboard box 102 outside the double structure. As a result, the corrugated cardboard sleeve 105 spreads between the corrugated cardboard box 102 and the sleeve 105 constituting the double structure, so that distortion of the corrugated cardboard box 102 outside the double structure is also prevented. Therefore, the bulk packaging box 101 according to the second embodiment can prevent the cardboard box 102 from being deformed into distortion.

  In the bulk packaging box 101 according to the second embodiment, the cardboard box 102 includes four creases 102E. Therefore, the cardboard box 102 can be folded using the crease 102E. Further, the sleeve 105 has a joint 107A provided at one end in the flow direction 107C, and 40 inner crease lines 107B for forming each side surface 107D are provided along the width direction 107F at equal intervals 107E. The other end of the flow direction 107C is composed of a sleeve piece 107 that is one side of the side surface 107D.

  Then, the sleeve 105 is manufactured by joining the joint 10A at one end in the flow direction 107C of the sleeve piece 107 and the side surface 107D at the other end in the flow direction 107C. That is, the sleeve 105 can be folded using the inner folding ruled line 107B. Therefore, the bulk packaging box 101 according to the second embodiment can fold the corrugated cardboard box 102 and the sleeve 105, which are components having a double structure.

  However, a notch portion dedicated to folding may be provided for the sleeve piece 107.

In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the meaning.
For example, the cardboard box 102 may be a punched box type in which the lower flap 102B can be assembled without being bonded with the packing tape 103.

  Further, the corrugated cardboard box 102 is a quadrangle, but it may be a polygonal shape having a high compressive strength in the vertical direction.

DESCRIPTION OF SYMBOLS 1 Bulk packaging box 2 Body 2A, 2B Both end surface 2C Each side surface 2D Notch part 2E Peripheral part of a notch part 3 A pair of cover box 3A A peripheral groove 5 A pair of binding bands 7 Inner bag 8 Sleeve 8A A pair of cover box and sleeve 8B Cut section 8C Peripheral section of cut section 9 Pair of body pieces 9A Joint 9B Four creases 9C Flow direction 9D Width direction 9E Both ends in the width direction 10 Pair of sleeve pieces 10A Joint 10B 21 inner crease lines 10C Flow direction 10D Width direction 10F Dimensions in the flow direction of the seam of a pair of sleeve pieces 10G Equal intervals between the inner crease lines of the pair of sleeve pieces 10H Each convex part 101 Bulk packaging box 102 Corrugated cardboard box 102A Upper flap 102B Lower flap 104 Inner bag 105 Sleeve 105A Space 10 partitioned by the upper and lower flaps of the cardboard box and the sleeve 10 Inwardly folding the sleeve piece 107A joint flap 107B 40 present ruled 107C flow direction 107D surface 107E equidistant 107F width direction

Claims (4)

A body made of corrugated cardboard with a plurality of creases provided to form each side of the polygonal shape, with both end faces being open and having a polygonal shape of a quadrangle or more,
A sleeve made of corrugated cardboard having an inscribed relationship with the body and having an opening formed in a polygonal shape close to a circle and having a cylindrical shape, and a plurality of inwardly creased lines;
A pair of lid boxes closing both end faces of the body;
A binding band for fixing the pair of lid boxes to the body with the pair of lid boxes closing both end surfaces of the body;
An inner bag made of a flexible material that is housed in a space partitioned by the pair of lid boxes and the sleeve and filled with an indeterminate shape,
Before the inner bag is accommodated in a space partitioned by a pair of lid box and the sleeve, the body and the sleeve are each folded through each crease and each inner folding ruled line,
After the inner bag is accommodated in a space partitioned by a pair of lid box and the sleeve, the inner wall surface of the sleeve has a cylindrical shape in which the opening of the sleeve is formed in a polygonal shape close to a circle. In accordance with the present invention, the bulk packaging box is characterized in that the indefinite shape in the inner bag is supported with a uniform reaction force. A bulk packaging box according to claim 1,
The body includes a pair of body pieces in which the seam is provided at one end in the flow direction and a plurality of creases for forming each side surface are provided, and the other end in the flow direction is one side of the side surface,
The sleeve is composed of a pair of sleeve pieces in which seams are provided at both ends in the flow direction and a plurality of inward crease lines are provided at equal intervals along the width direction,
About the pair of fuselage pieces, a seam at one end in the flow direction of one fuselage piece is joined to a side surface at the other end in the flow direction of the other fuselage piece and at one end in the flow direction of the other fuselage piece. By joining the seam and the side surface at the other end in the flow direction of one fuselage piece, the fuselage is produced,
A bulk packaging box, wherein, for the pair of sleeve pieces, the sleeve is produced by joining a joint margin of one sleeve piece and a joint margin of the other sleeve piece. A bulk packaging box according to claim 2,
Cut portions are formed on both sides in the width direction of the one body piece and the other body piece,
Cut portions are formed on both sides in the width direction of both joints of the one sleeve piece and both joints of the other sleeve piece,
When the sleeve is produced, the joint cut portion of one sleeve piece and the joint cut portion of the other sleeve piece are overlapped,
The dimension in the flow direction of the seam allowance of the pair of sleeve pieces is longer than an equal interval between the inner folding lines of the pair of sleeve pieces,
Bonding the periphery of the notch of the fuselage and the periphery of the notch of the sleeve while overlapping the notch of the fuselage and the notch of the sleeve when the sleeve is installed in the torso A bulk packaging box, characterized in that A bulk packaging box according to claim 2 or claim 3,
The pair of sleeve pieces has protrusions formed on both sides in the width direction of the joint provided at both ends in the flow direction and on both sides in the width direction near the center between the joints provided at both ends in the flow direction. And
When the pair of lid boxes are molded with synthetic resin, a peripheral groove is formed,
A bulk packaging box, wherein both convex portions of the pair of sleeve pieces and both ends in the width direction of the pair of body pieces are fitted into peripheral grooves of the pair of lid boxes.

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