JP6041083B2 - Corrugated cardboard cushioning material and corrugated cardboard box for storing the corrugated cardboard cushioning material - Google Patents

Description

  The present invention relates to a corrugated cardboard cushioning material used for packing precision equipment for communication, semiconductor wafer cases, electronic equipment, home appliances, and the like, and a corrugated cardboard box in which the corrugated cardboard cushioning material is stored.

  Materials used for packaging electronic devices and the like are changing with the times from buffer materials made of foamed resin typified by conventional foamed polystyrene to papers that take the environment and recycling into consideration, especially buffer materials made of cardboard. Corrugated cushioning materials generally use a plurality of corrugated cardboard sheets folded into a rectangular tube shape, or process a corrugated cardboard sheet by combining folding and punching, cutting, etc., forming a square tube in one part, and in other parts The protruding piece is formed and further assembled by inserting the protruding piece into the cut at another portion. Inventions relating to such a corrugated cardboard cushioning material have been proposed in, for example, the following Patent Documents 1 to 5.

JP 2001-270568 A Japanese Patent No. 4455741 JP 2003-26246 A Japanese Patent No. 3959255 JP 2008-308178 A

  However, as described above, all of the inventions proposed in Patent Documents 1 to 5 require processes such as complicated folding, cutting and punching of cardboard sheets, and complicated assembly operations. For example, there is a great effort and cost in terms of design and manufacturing. Furthermore, the number of corrugated cardboard sheets used increases, making manufacturing and assembling complicated, and the cushioning material is configured by complicated folding of the corrugated cardboard sheets. In response to this, it is necessary to redo the design and the like, and there is also a problem that the versatility is poor because a radical review is required. In addition, even the corrugated cardboard cushioning material assembled in this way cannot avoid the inconvenience of being cut, torn, or crushed other than the crease due to external impact, and the function itself as the cushioning material. There is also a problem that there is a risk of damage.

  Therefore, a highly versatile cushioning material that does not require drastic design changes according to changes in the dimensions of the box, etc., reduces costs with a simple shape, and also cuts, breaks, and collapses other than folds There was a request to provide a configuration that does not cause any inconvenience. The inventors of the present application have succeeded in creating a corrugated cardboard cushioning material that exhibits a hammock-like cushioning function.

  The present invention has been proposed in view of the above circumstances, and can be made of a highly versatile cardboard cushioning material with a simple shape, and the cardboard cushioning is less likely to cause inconveniences such as breakage, tearing, and crushing of places other than folds. It is an object of the present invention to provide a corrugated cardboard box in which the corrugated cardboard cushioning material is stored.

  In order to achieve the above object, the present invention is a corrugated cushioning material that absorbs an impact received from the outside by an object accommodated in a box, and a rectangular corrugated cardboard sheet having a step parallel to the longitudinal direction, Folded in a direction perpendicular to the step and provided with a substantially M-shaped cross-sectional view having a bottom side, the left end surface portion, and the left end surface portion and a mountain fold line are continuously folded, and the left end surface portion The left intermediate surface portion having a small area, the bottom surface portion that is continuously folded and valley-folded with the left intermediate surface portion and the valley fold line, and continuously folded and valley-folded with the bottom surface portion and the valley fold line are the same as the left intermediate surface portion. A right intermediate surface portion having a size and a right end surface portion having the same size as the left end surface portion are continuously formed by being mountain-folded with the right intermediate surface portion and a mountain fold line, and using at least two or more, the left Surrounded by the intermediate surface portion, the bottom surface portion, and the right intermediate surface portion The left end side of the left end surface portion and the right end side of the right end surface portion are positioned at the corner of the box body by being crossed up and down so as to form a space, A space is formed between the bottom surface portion and the bottom surface of the box facing the bottom surface portion in the vicinity, and the bottom surface portion is provided with a vertical spring property, and the left end surface portion and the left intermediate surface portion, and The right end surface portion and the right intermediate surface portion are provided with a spring property in the left-right direction so that a hammock-like buffering function is exhibited.

  In particular, the cardboard cushioning material is formed by extending the left end surface portion and the right end surface portion in a region surrounded by the bottom surface of the box, the left end surface portion, the left intermediate surface portion, the bottom surface portion, the right intermediate surface portion, and the right end surface portion. It is preferable that the extension portion or other rectangular corrugated cardboard sheet is arranged by being folded.

  Further, two mountain fold lines between the left end surface portion and the left intermediate surface portion and two mountain fold lines between the right intermediate surface portion and the right end surface portion are formed, respectively. When a trough is formed, a more preferable configuration is obtained.

  The corrugated board box according to the present invention is characterized in that the corrugated board cushioning material is accommodated, and the left end side of the left end face part and the right end side of the right end face part are positioned at corners. And

  In the present invention, a rectangular corrugated cardboard sheet having a step parallel to the longitudinal direction is bent in a direction perpendicular to the step and so as to have a substantially M-shaped sectional view having a bottom, The left end surface portion is continuously folded and mountain-folded at the mountain fold line, the left intermediate surface portion having a smaller area than the left end surface portion, the left intermediate surface portion and the bottom surface portion that is continuously valley-folded at the valley fold line, and the bottom surface A right intermediate surface portion that is the same size as the left intermediate surface portion, a right intermediate surface portion that is the same size as the left intermediate surface portion, and a right end surface portion that is the same size as the left end surface portion. Is formed. Accordingly, it is possible to realize a significant cost reduction in terms of design and manufacturing by eliminating the need for complicated folding, cutting, and punching steps of the corrugated cardboard sheet and the need for complicated assembly operations. In particular, at least one type of corrugated cardboard sheet can be used, and the minimum number of cardboard sheets is two. In addition, the simple structure of a substantially M-shaped cross-section with a bottom provides a sufficient cushioning function. It is possible to construct a highly versatile cushioning material with a simple shape, such that there is no need for fundamental design changes according to the above.

  Further, the present invention is stored in the box by crossing up and down so that a space surrounded by the left intermediate surface portion, the bottom surface portion, and the right intermediate surface portion is formed using at least two in this configuration. By positioning the left end side of the left end face part and the right end side of the right end face part at the corner of the box, a space is formed between the bottom face and the bottom face of the box facing the bottom face in the vicinity. Since the bottom part is provided with a spring property in the vertical direction, the left end surface part and the left intermediate surface part, and the right end surface part and the right intermediate surface part are provided with a spring property in the left and right direction, and a hammock-like buffering function is exhibited. It is also possible to avoid inconveniences such as breakage, breakage, and crushing as much as possible by absorbing external impacts. Using at least two or more, the top and bottom crosses so that a space surrounded by the left intermediate surface, bottom surface, and right intermediate surface is formed and stored in the box. It should be noted that it can be used in both the front, rear, left and right directions.

  Further, the present invention is an extension portion formed by extending the left end surface portion and the right end surface portion in a region surrounded by the bottom surface of the box and the left end surface portion, the left intermediate surface portion, the bottom surface portion, the right intermediate surface portion and the right end surface portion. If other rectangular corrugated sheets are arranged to be bent, the vertical spring characteristics and the horizontal spring characteristics can be enhanced, and the above-described effects can be exerted more and more.

  Further, two mountain fold lines between the left end surface portion and the left intermediate surface portion and two mountain fold lines between the right intermediate surface portion and the right end surface portion are formed, respectively. If it is set as the structure in which a trough part is formed, the spring property of the front-back and left-right direction can be strengthened further.

  In addition, the present invention is a cardboard box body in which the above-mentioned corrugated cardboard cushioning material is housed and has a shape in which the left end side of the left end face part and the right end side of the right end face part are positioned at the corner, From the viewpoint of dimensional design, internal dimensions, and the angle of the substantially M-shaped V-shaped portion, the cardboard cushioning material of the present invention is highly versatile because it has a shape that effectively exhibits the cushioning function of the cardboard cushioning material. It can be provided as a corrugated cardboard box that can be most utilized.

It is an exploded view explaining an example of application of the cardboard cushioning material according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view for explaining an application example of a corrugated cardboard cushioning material according to the present invention, and is a longitudinal sectional view showing a partially broken one substantially M-shaped corrugated cardboard material for the sake of understanding. It is an expanded view which shows a crease | fold and a step | line and demonstrates the substantially M-shaped cardboard material which comprises the cardboard cushioning material which concerns on this invention. It is the schematic explaining the variation of the substantially M-shaped corrugated cardboard material which comprises the cushioning material made from corrugated board concerning this invention by (a)-(e). It is the schematic explaining the cardboard cushioning material as a reference example, Comprising: (a) is a schematic expanded view, (b) is a schematic longitudinal cross-sectional view when accommodated in the box. It is a longitudinal cross-sectional view explaining the corrugated cardboard cushioning material of a comparative example.

  Several embodiments according to the present invention will be described below by way of example with reference to the drawings. This embodiment is merely an example embodying the configuration of the present invention, and various design changes can be made without departing from the matters described in the claims.

  Corrugated cardboard cushioning material 1A according to the present invention, as shown in FIG. 1 or 2, is stored in a box B of a cube or a rectangular parallelepiped, A wafer case C in which semiconductor wafers are stacked and packaged functions as, for example, a cushioning material that absorbs an impact received from the outside.

  As shown in FIG. 3, the substantially M-shaped cardboard material 1 constituting the cardboard cushioning material 1 </ b> A has a step a parallel to the longitudinal direction, and the first to first provided in a direction perpendicular to the step a. One rectangular cardboard sheet having fourth ruled lines 21, 22, 23, and 24 is formed by being bent. Specifically, the substantially M-shaped corrugated cardboard material 1 is formed by being bent along the first to fourth ruled lines 21, 22, 23, and 24 so as to have a substantially M-shaped cross-sectional view having a bottom side. The

  More specifically, the rectangular corrugated cardboard sheet is folded, and is continuously folded and folded at the left end surface portion 11 and the left end surface portion 11 with the first ruled line 21 as a mountain fold line, and has a smaller area than the left end surface portion 11. The intermediate surface 12, the bottom surface 13 that is valley-folded and continuous with the left intermediate surface 12 and the second ruled line 22 as a valley fold line, and the valley fold at the bottom 13 and the third ruled line 23 as a valley fold line The right intermediate surface portion 14 having the same size as the left intermediate surface portion 12 and the right intermediate surface portion 14 and the fourth ruled line 24 as a mountain fold line are continuously folded and are the same size as the left end surface portion 11. A substantially M-shaped corrugated cardboard material 1 is formed by forming a right end surface portion 15.

  A rectangular corrugated cardboard sheet for forming the substantially M-shaped corrugated cardboard material 1 is another corrugated cardboard in which a corrugated sheet a is formed between two corrugated cardboard sheets in the same manner as the production of ordinary corrugated cardboard. The first to fourth ruled lines 21, 22, 23, and 24 may be formed at predetermined positions in a direction perpendicular to the step a by sandwiching the base paper. Further, with respect to the produced rectangular corrugated cardboard sheet, a printing process and a molding process such as die cutting may be appropriately added.

  As shown in FIG. 1 or FIG. 2, the cardboard cushioning material 1A uses at least one kind of substantially M-shaped cardboard material 1 and two or more (in this embodiment, two kinds), and left A space surrounded by the intermediate surface 12, the bottom surface portion 13, and the right intermediate surface portion 14, for example, is stored in the box B by being vertically crossed so as to form a substantially rectangular parallelepiped space, and the left end side 11 a of the left end surface portion 11, Further, the right end side 15a of the right end surface portion 15 is positioned at the corner of the box B, so that a space is formed between the bottom surface portion 13 and the bottom surface B1 of the box B facing the bottom surface portion 13 in the vicinity. Thus, the bottom surface portion 13 is provided with a vertical spring property. Further, the left end surface portion 11 and the left intermediate surface portion 12 and the right end surface portion 15 and the right intermediate surface portion 14 are provided with springiness in the left-right direction. The cardboard cushioning material 1A uses two or more substantially M-shaped corrugated cardboard materials 1 and a wafer case as a stored item due to the spring property in the horizontal direction and the vertical direction based on the configuration stored in the box B as described above. C is held in a hollow state, and a hammock-like buffering function is exhibited from the top, bottom, front, back, left and right during storage and transportation. By the way, a hammock is like a bedding that allows you to sleep and relax on a wall, pillar, outdoor tree, etc. This is a mode in which the contents are held in a hollow state against the weight of the material and against the external stress.

  Here, with reference to FIG. 1 or FIG. 2, a state in which two substantially M-shaped corrugated cardboard materials 1 are used and crossed up and down so as to form a substantially rectangular parallelepiped space will be described in detail. . First, one substantially M-shaped corrugated cardboard material 1 is placed into the box B so that the left end side 11a of the left end face part 11 and the right end side 15a of the right end face part 15 are positioned at the corners of the box B. Accommodate. Next, the wafer case C is placed on the bottom surface portion 13 of the substantially M-shaped cardboard 1. Finally, the other substantially M-shaped corrugated cardboard material 1 is symmetrically opposed to the already accommodated one of the substantially M-shaped corrugated cardboard materials 1, and is further sandwiched so as to be crossed by changing the angle of 90 °. Store inside. That is, the wafer case C is accommodated in a substantially rectangular parallelepiped space surrounded by the left intermediate surface 12, the bottom surface portion 13, and the right intermediate surface portion 14 of the two substantially M-shaped corrugated cardboard materials 1. Then, in addition to the buffering function by the spring property of the left-right direction and the up-down direction by one substantially M-shaped cardboard material 1, the buffer function by the spring property of the front-back direction is provided by the other substantially M-shaped cardboard material 1. Further, when the top and bottom are turned upside down, the other substantially M-shaped corrugated cardboard material 1 exhibits a vertical cushioning function and resists stress from any of the front, rear, left and right directions. Thus, the wafer case C can be held.

  The space is formed between the bottom surface portion 13 and the bottom surface B1 of the box B because the left intermediate surface portion 12 has a smaller area than the left end surface portion 11, and the right intermediate surface portion 14 has a smaller area than the right end surface portion 15. based on. Furthermore, it is based on the left end surface part 11 and the right end surface part 15 having the same area. Further, the left end surface portion 11 and the left intermediate surface portion 12, and the right end surface portion 15 and the right intermediate surface portion 14 are each provided with a spring property in the left-right direction. This is based on the fact that the right intermediate surface portion 14 and the right end surface portion 15 are continuously folded and folded at the fourth ruled line 24.

  The bottom surface portion 13 has a vertical spring property because when the wafer case C is accommodated in the bottom surface portion 13, the first ruled line 21 and the fourth ruled line 24 that are folded in a mountain are second folded in the valley. By moving inwardly with the ruled line 22 and the third ruled line 23 as fulcrums, the weight of the wafer case C is countered, and the wafer case C is wrapped around the bottom surface part 13, the left intermediate surface part 12, and the right intermediate surface part 14. based on.

  When the cardboard cushioning material 1A according to the present invention is housed in the box B and the wafer case C is housed and transported in the bottom surface portion 13 of the cardboard cushioning material 1A, the lateral direction from the outside In response to this impact, the right-side cushioning function is exhibited by the springiness formed by the left end surface portion 11 and the left intermediate surface portion 12 and the spring property formed by the right intermediate surface portion 14 and the right end surface portion 15. In addition, the spring property formed by the bottom surface portion 13, the left intermediate surface portion 12, and the right intermediate surface portion 14 provides a buffering function against an external impact in the vertical direction. Then, two substantially M-shaped cardboards 1 are used, and are stored in the box B by being crossed up and down so that a substantially rectangular parallelepiped space surrounded by the left intermediate surface 12, the bottom surface portion 13, and the right intermediate surface portion 14 is formed. Therefore, as described above, the buffering function is exhibited in any of the up, down, front, back, left and right directions. The cardboard cushioning material 1A is substantially M-shaped in cross-sectional view with a bottom and has an open portion, so that the impact transmitted to the left intermediate surface portion 12 and the right intermediate surface portion 14 can be released to the open portion. It is also a configuration.

  Here, the superiority of the present invention will be described by comparing the corrugated cardboard cushioning material 1A according to the present invention with the comparative example shown in FIG.

  The comparative example shown in FIG. 6 is a corrugated paper cushioning material 100 in which a packing portion 101 for packing an electronic device or the like is formed so as to surround a square tube portion 102 in a square tube shape. In addition, the comparative example is formed from one cardboard sheet for comparison with the present invention. Further, a space is formed between the bottom surface of the box and the packing unit 101.

  When the wafer case C is accommodated in the packing portion 101 of the cardboard paper cushioning material 100, the side of the rectangular tube portion 102 on the packing portion 101 side falls in the direction of gravity with the weight of the wafer case C, and the entire packing portion 101 is It falls toward the bottom of the box (shown in FIG. 6 by a broken line and a solid line). That is, since the weight of the wafer case C cannot be countered, the spring property in the vertical direction is not exhibited. Further, when the wafer case C is accommodated in the packing unit 101 and transported, the rectangular tube part 102 absorbs the impact in the left and right direction from the outside. There is a possibility that inconveniences such as cutting, breaking, and crushing occur. On the other hand, the corrugated cardboard cushioning material 1A according to the present invention is as described above, and has a substantially M-shaped cross-sectional view having a bottom side that exhibits a cushioning function due to the spring property with respect to impacts in the horizontal direction and the vertical direction. It can be provided as a highly versatile cardboard cushioning material with a simple configuration.

  Since the corrugated cardboard cushioning material 100 of the comparative example is opposed to the weight of the wafer case C, the tooth-like portion or claw-like shape of a clog that connects the bottom surface of the box and the packing portion 101 by cutting or punching. The part 103 may be formed and configured. However, in the formed clog-like claw-like portion or claw-like portion 103, it is difficult to obtain a cushioning function due to the spring property such that the wafer case C remains in a function of supporting the wafer case C against its weight and absorbs an impact. . Further, since a process for cutting and punching corrugated cardboard paper is essential during production, there is an inherent problem of labor and cost. In addition, the articles that can be supported by the clog tooth-like portion or claw-like portion 103 are limited to lightweight items, and if a predetermined weight is exceeded, as shown in FIG. May be bent and even its support function may be lost. In the corrugated cardboard cushioning material 1A according to the present invention, all such problems are solved.

  Here, the cardboard cushioning material according to the present invention can be easily added with some configurations by taking advantage of the simple shape of a substantially M-shaped cross-sectional view having a bottom as described below. Thus, the buffering function in the horizontal direction and the vertical direction can be enhanced.

  For example, as shown in FIG. 4A, the corrugated cardboard cushioning material 1B has a M-shaped corrugated cardboard material between the left end surface portion 11 and the left intermediate surface portion 12 as compared with the corrugated cardboard cushioning material 1A. Regarding the first ruled line that is the mountain fold line, the left first ruled line 211 and the right first ruled line 212 are formed, and the fourth ruled line that is the mountain fold line between the right intermediate surface part 14 and the right end surface part 15 is also formed. A left fourth ruled line 241 and a right fourth ruled line 242 are formed, a V-shaped valley V1 is formed between the left first ruled line 211 and the right first ruled line 212, and the left fourth ruled line 241 and the right side. The difference is that the second valley V2 having a V-shaped cross section is formed between the fourth ruled lines 242, and this difference is a further feature of the cardboard cushioning material 1B.

  In the cardboard cushioning material 1B, the left end surface portion 11 and the left intermediate surface portion 12 which are continuous by the two mountain folds of the left first ruled line 211 and the right first ruled line 212 and the valley portion V1 are formed, and the left fourth Since the right end surface portion 15 and the right intermediate surface portion 14 that are continuous by the two mountain folds of the ruled line 241 and the right side fourth ruled line 242 and the valley part V2 are formed, one M-shaped corrugated cardboard material has left-right spring properties. (The buffer function) can be strengthened, and the spring property (buffer function) in the front-rear direction can be strengthened in the other M-shaped corrugated cardboard material stored by being crossed up and down.

  Further, as shown in FIG. 4B, the corrugated cardboard cushioning material 1C is made up of the M-shaped corrugated cardboard material, the bottom surface of the box, the left end surface portion 11 and the left middle as compared with the corrugated cardboard cushioning material 1A. A left extension portion 111 and a right extension portion 151 formed by extending the left end surface portion 11 and the right end surface portion 15 are disposed in an area surrounded by the surface portion 12, the bottom surface portion 13, the right intermediate surface portion 14, and the right end surface portion 15. This difference is a further feature of the cardboard cushioning material 1C.

  In this cardboard cushioning material 1C, the left extension 31 and the right extension 35 are surrounded by the bottom of the box, the left end face 11, the left intermediate face 12, the bottom face 13, the right intermediate face 14 and the right end face 15. By arranging in the region, the left-side spring 111 (buffering function) can be strengthened in one M-shaped corrugated cardboard material by the cushioning property of the extended left extension 111 and right extension 111 itself. In the other M-shaped corrugated cardboard material that is accommodated by being crossed up and down, the spring property (buffer function) in the front-rear direction can be enhanced.

  Further, as shown in FIGS. 4 (c) and 4 (d), the corrugated cardboard cushioning materials 1D and 1E are compared with the corrugated cardboard cushioning material 1A, respectively. Other rectangular corrugated cardboard sheets D1 and D2 are folded and arranged in a region surrounded by the surface portion 12, the bottom surface portion 13, the right intermediate surface portion 14, and the right end surface portion 15.

  In this cardboard cushioning material 1D, 1E, the other rectangular corrugated cardboard sheets D1, D2 that are bent are the bottom surface of the box, the left end surface portion 11, the left intermediate surface portion 12, the bottom surface portion 13, the right intermediate surface portion 14, and the right end surface portion. By being disposed in the region surrounded by 15, the spring property (buffer function) in the left-right direction and the up-down direction can be enhanced by the cushioning property provided in the other rectangular cardboard sheet D itself.

  Further, as shown in FIG. 4 (e), the corrugated cardboard cushioning material 1F, when compared with the corrugated cardboard cushioning material 1A, is centered on the left end surface portion 11 and the right end surface portion 15 of the M-shaped corrugated cardboard material. The portions 11b and 15b are formed.

  In this corrugated cardboard cushioning material 1F, the bottom portion 13 for accommodating the contents is located at the center of the box B when the cardboard cushioning material 1F is accommodated in the box B by the center aligning ears 11b, 15b. Thus, it becomes possible to accommodate the stored item in a state in which the spring property (buffer function) in the front-rear and left-right directions and the vertical direction is most exhibited. In addition, since two substantially M-shaped corrugated cardboard materials are used and crossed up and down so as to form a substantially rectangular parallelepiped space, they are stored in the box B, so that they are stored first by the centering ears 11b and 15b. One M-shaped corrugated cardboard material is always arranged at the center, and the effect of smoothly storing the other substantially M-shaped corrugated cardboard material in the box B is also obtained.

  Further, as shown in FIG. 5A, a corrugated cardboard cushioning material 1G as a reference example showing the superiority of a substantially M-shaped corrugated board material having a substantially M-shaped cross-sectional view having a bottom side, An extending portion extending in a direction perpendicular to the longitudinal direction of the rectangular corrugated cardboard sheet is provided, and the extending portion is provided in a direction parallel to the step a and having a substantially M-shaped cross-sectional view having a bottom side. The second left end surface portion 31 is bent, and the second left end surface portion 31 and the second left intermediate surface portion 32 having a smaller area than the second left end surface portion 31, the bottom surface portion 13, and the valley A second right intermediate surface portion 34 having the same size as the second left intermediate surface portion 32 and a second right intermediate surface portion 34 and a mountain fold line continuous with the second left intermediate surface portion 32 are continuously bent, and the second left end surface portion. By forming and configuring the second right end surface portion 35 having the same size as 31, the Yacco type In which substantially has a M-shaped cardboard material shape.

  In this corrugated cardboard cushioning material 1G, if it is configured to be bent in the shape of a box, as shown in FIG. 5 (b), in addition to the vertical and horizontal directions from the two corrugated cardboard sheets, the front and back spring properties (buffer function) ).

  The corrugated cardboard cushioning materials 1A to 1F according to the present invention can be configured by combining corresponding M-shaped corrugated cardboard materials according to the scene to be implemented, and thereby the cushioning function required according to the contents to be accommodated. Can correspond to each. For example, one of the substantially M-shaped cardboard materials stored in the box B first constitutes the cardboard cushioning material 1F, and one of the substantially M-shaped cardboard materials stored in the box B later is made of cardboard. If the cushioning material 1 </ b> A is configured, it is possible to proceed the packing operation of the stored items most smoothly.

  Accordingly, the corrugated cardboard cushioning materials 1A to 1F according to the present invention have a rectangular cardboard sheet having a step a in parallel with the longitudinal direction, and a substantially M-shape having a bottom side in a direction perpendicular to the step a. With a simple configuration that is folded so as to have a cross-sectional view, it is possible to provide a cushioning function in the left-right direction, the front-rear direction, and the up-down direction, and it is not necessary to redesign according to the dimensions of the box B It is possible to provide a highly versatile cushioning material. Of course, the process of complicated folding, cutting, and punching corrugated cardboard sheets is unnecessary, and complicated assembly operations are also unnecessary, so it is possible to realize significant cost reductions in terms of design and manufacturing. is there. In addition, since shocks from the outside are absorbed by a buffering function based on the spring properties in the left-right direction, the front-rear direction, and the up-down direction, it is possible to avoid inconveniences such as breakage, breakage, and collapse of parts other than the ruled lines that are creases. It becomes.

  Further, in the present invention, the left end surface portion 11 and the right end surface portion 15 are in a region surrounded by the bottom surface B1 of the box B and the left end surface portion 11, the left intermediate surface portion 12, the bottom surface portion 13, the right intermediate surface portion 14 and the right end surface portion 15. The left and right extensions 111, 151 or other rectangular corrugated cardboard sheets D1, D2 formed to be extended are configured to be bent, and a mountain fold between the left end surface 11 and the left intermediate surface 12 And two mountain fold lines between the right intermediate surface portion 14 and the right end surface portion 15 are formed, and V-shaped valley portions V1 and V2 are formed between the two mountain fold lines. By adding a simple configuration such as doing so, the spring property can be enhanced.

  Here, the present invention is a cardboard box having a shape in which the above-mentioned cardboard cushioning materials 1A to 1F are accommodated and the left end side 11a of the left end face part 11 and the right end side 15a of the right end face part 15 are positioned at the corners. It is preferably carried out in combination with the body (invention). Such a corrugated cardboard box has a shape that effectively exerts the cushioning function of the corrugated cardboard cushioning materials 1A to 1F from the viewpoint of dimensional design, internal dimensions, and angle of the substantially M-shaped V-shaped portion. Therefore, it is possible to provide a corrugated cardboard box body that can make the most of the highly versatile cardboard cushioning material of the present invention.

  As mentioned above, although several embodiment of this invention was illustrated and explained in full detail, this invention is not limited to the said embodiment. The present invention can be modified in various ways without departing from the scope of the claims.

  For example, the container to which the present invention is applied is not limited to the transportation of a wafer case as described above, but a case where a tray in which a plurality of mobile liquid crystal screen components are accommodated is transported in a stacked manner, a laptop PC Various electronic devices, home appliances, etc. can be assumed, such as a scene where a precision instrument for communication and the like and a frame thereof are transported. Further, the material and hardness of the corrugated board sheet can be adjusted as appropriate from the relationship with the shape and weight of the container, and if it is configured without departing from the matters described in the claims, a desired buffer function can be obtained. Corrugated cushioning material provided can be obtained.

DESCRIPTION OF SYMBOLS 1 ... M-shaped corrugated cardboard material 1A-1F. Corrugated cardboard cushioning material (present invention)
1G ··· Cardboard cushioning material (reference example)
11 .... Left end surface portion 11a ... Left end side 11b ... Ear portion 111 ... Left extension portion 12 .... Left intermediate surface portion 13 .... Bottom surface portion 14 ... Right intermediate surface portion 15 ··· Right end surface portion 15a · Right end side 15b · Ear portion 151 ··· Right extension portion 21 ··· First ruled line 211 ··· Left side first ruled line 212 ··· Right side first ruled line 22 2nd ruled line 23 ... 3rd ruled line 24 ... 4th ruled line 241 ... 4th ruled line on the left 242 ... 4th ruled line on the right 31 ... ... 2nd left end face part 32 ... ... Second left intermediate surface 34 ... Second right intermediate surface 35 ... Second right end surface 100 ... Corrugated cushioning material (comparative example)
101 ... Packing part 102 ... Square tube part 103 ... Tooth-like part or claw-like part of clogs B ... Box B1 ... An opposing surface of the box C ... Wafer case (container)
D1, D2, other rectangular corrugated sheet V1 ... first valley V2 ... second valley

Claims (4)

A shock absorber made of cardboard that absorbs the impact received from the outside of the container contained in the box,
A rectangular corrugated cardboard sheet having a step parallel to the longitudinal direction is bent in a direction perpendicular to the step and so as to have a substantially M-shaped cross-sectional view having a bottom, and the entire left end surface is flat. And the left end surface portion and the mountain fold line are continuously folded over all sides of the mountain fold line, the left intermediate surface portion having a smaller area than the left end surface portion, and the left intermediate surface portion and the valley fold line are A continuous bottom surface, a bottom fold line and a valley fold line are continuously folded, a right intermediate surface part having the same size as the left intermediate surface part, and a right fold line and a mountain fold line It becomes a corrugated board material that is continuous over the whole side, and has a flat right end surface portion formed on the entire surface of the same size as the left end surface portion,
Using at least two or more of the corrugated cardboard materials, the upper and lower crosses are formed so that a space surrounded by the left intermediate surface portion, the bottom surface portion, and the right intermediate surface portion is formed, and each of them is self-supported in the box. Stowed,
One of the corrugated cardboard materials is positioned so that the left end side of the left end surface portion and the right end side of the right end surface portion are positioned at the corners of the box body, thereby facing the bottom surface portion in the vicinity. A space is formed between the bottom surface of the box body and the bottom surface portion is provided with a vertical spring property, and the left end surface portion and the left intermediate surface portion, and the right end surface portion and the right intermediate surface portion are Spring direction is provided,
In the other corrugated board material, the crease portion between the left end surface portion and the left intermediate surface portion by the mountain fold line, and the crease portion between the right end surface portion and the right intermediate surface portion by the mountain fold line are self-supporting on the bottom surface of the box body. The left end surface portion and the left intermediate surface portion, and the right end surface portion and the right intermediate surface portion are provided with a spring property in the left-right direction,
Hammock-like buffer function is demonstrated,
A cardboard cushioning material. An extension formed by extending the left end surface portion and the right end surface portion in a region surrounded by the bottom surface of the box and the left end surface portion, the left intermediate surface portion, the bottom surface portion, the right intermediate surface portion, and the right end surface portion. Part or other rectangular corrugated cardboard sheet is folded and arranged,
The cardboard cushioning material according to claim 1. Two mountain fold lines between the left end surface portion and the left intermediate surface portion and two mountain fold lines between the right intermediate surface portion and the right end surface portion are formed, and a V-shaped cross-sectional view is formed between the two mountain fold lines. A trough is formed,
The cardboard cushioning material according to claim 1 or 2, wherein the cushioning material is made of cardboard. The cushioning material made of cardboard according to any one of claims 1 to 3 is accommodated, and has a shape in which the left end side of the left end surface portion and the right end side of the right end surface portion are positioned at corners.
A cardboard box characterized by the above.

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