JP2008265811A - Structure of corrugated cardboard packaging material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a corrugated cardboard packaging material which is formed in a box or square shape by folding a flat corrugated cardboard material and which firmly keeps the box or square shape in a closed condition by inserting a flap in a slit. <P>SOLUTION: In structuring this corrugated cardboard packaging material, a flat corrugated cardboard material is formed with a cut line and a folding line, the line is folded to form at least a square-shaped cross section, two layers of a top face with the square-shaped cross section are formed, the first slit 1d is formed on the edge of the lower top face, the first flap 1e to be folded downward is formed on the edge of the upper top face 1a, and the flap 1e is inserted in the slit 1d. The right and left edges of the first slit are so inclined that when they are apart from a folded curve, they move inward. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a cardboard packaging material.

  2. Description of the Related Art Conventionally, a corrugated cardboard packaging material is known in which a flat corrugated cardboard material is bent into a box shape, and a box is locked in a closed state by inserting a flap into a slit. Such a conventional cardboard packaging material will be described with reference to FIGS.

  FIG. 7 shows an example of such a conventional cardboard packaging material as a development view. In FIG. 7, a solid line indicates an outline line or a cut line, and a dotted line indicates a fold. When the corrugated cardboard packaging material 4 shown in FIG. 7 is bent at a fold shown by a dotted line, it is formed in a box shape as shown in FIG.

  The portion surrounded by the outline indicated by the solid line or the cut line and the extension line of the fold indicated by the dotted line becomes a flat portion or a space when bent into a box shape, and the upper top surface 4a and the lower top surface also shown in FIG. 4b, body surface 4c, first slit 4d, second slit 4f, first flap 4e, second flap 4g, and the like are formed.

  Details of part A and part B in FIG. 7 are shown in FIGS. 8A and 8B, respectively. After being folded into a box shape as shown in FIG. 9, and further bent so that the lower top surface 4b is on the lower side and the upper top surface 4a is on the upper side, as shown in FIG. 4e fits into the first slit 4d, and the second flap 4g comes to a position where it fits into the second slit 4f. The second flap 4g is inserted into the second slit 4f, and the lower top surface 4b and the upper top surface 4a are locked in a state where the upper space of the box is closed.

  In the above-mentioned corrugated cardboard packaging material, since the width A of the first slit 4d and the second slit 4f shown in FIG. 8 is wider than the thickness of the corrugated cardboard material, there is a gap B between the slit and the flap as shown in FIG. As a result, the position of the flap is not determined in the slit, and the fitting becomes sweet. And it will be inferior in terms of quality. And if the product packed in this box swells, the trunk | drum 4c will be extruded outside and a malfunction will appear notably.

  The present invention has been made in view of the above points. The object of the present invention is to fold a flat corrugated cardboard material into a box shape or a rectangular shape, and insert a flap into a slit to insert a box or An object of the present invention is to provide a cardboard packaging material that can be firmly locked in a closed state.

  The structure of the corrugated cardboard packaging material according to the present invention is such that at least one square-shaped cross section is formed by bending the fold of the flat corrugated cardboard material in which cuts and folds are formed, and the top surface of the square-shaped cross section is formed. The first flap is formed by overlapping two sheets, provided with a first slit at the edge of the lower top surface, and provided with a first flap bent downward at the upper edge of the top surface. In the corrugated cardboard packaging material inserted into the first slit, the left and right edges of the first slit are inclined so as to approach the inside when they are separated from the bent portion.

  Further, the structure of the corrugated cardboard packaging material according to the present invention is such that at least one square-shaped cross section is formed by folding the fold of the flat corrugated cardboard material in which cuts and creases are formed, and the top of the square-shaped cross section is formed. The first surface is formed by overlapping two surfaces, a first slit is provided in the vicinity of the bent portion of the lower top surface, and a first flap that is bent downward is provided at an edge of the upper top surface. In the corrugated cardboard packaging material in which one flap is inserted into the first slit, a second slit is provided on an upper edge of the first flap, and a second flap is provided to be inserted into the second slit. When the left and right edges of the first slit are separated from the bent portion, the first slit is inclined so as to approach the inside, and when the left and right edges of the second slit are separated from the bent portion, the first slit is inclined so as to approach the inside. Is what

  Further, in the structure of each of the corrugated cardboard packaging materials, the cross-section in the direction perpendicular to the square-shaped cross section is also formed in a square shape and is formed in a rectangular shape as a whole.

  In the structure of each cardboard packaging material, the inclination angle of the left and right edges of the first slit or the second slit is 45 °.

  In the structure of each cardboard packaging material, the length of the first slit or the second slit is shorter than the width of the first flap and the second flap, respectively.

  According to the structure of the corrugated cardboard packaging material of the present invention, the flap inserted into the slit is firmly fitted into a fixed position in order to lock the packaging material in a box shape or a square shape, so that there is no backlash of the flap.

  Further, even when the product accommodated in the box is inflated due to elasticity, the box wall formed by the packing material is drawn inward, so that the external dimensions after packing are corrected.

  Moreover, since the part couple | bonded by fitting with a slit and a flap is correctly aligned, distortion of a box is corrected.

  Moreover, since there is no gap between the slit and the flap, the assembly is clean and an aesthetic appearance is obtained.

  In addition, when the slit is shorter than the width of the flap, the slit and the flap are strongly fitted, so that the flap does not easily come out of the slit and the lid does not open.

  The best mode for carrying out the present invention will be described below with reference to examples.

  1 is a developed view of a corrugated cardboard packaging material according to Embodiment 1 of the present invention, FIG. 2 (a) is a detailed view of a portion A in FIG. 1, FIG. 2 (b) is a detailed view of a portion B in FIG. FIG. 4 is a partial perspective view showing a state in which the cardboard packaging material is folded into a box shape and the lid is opened, and FIG. 4 is a partial perspective view showing a state in which the cardboard packaging material is folded into a box shape and the lid is closed.

  In FIG. 1, a solid line indicates an outline or a cut line, and a dotted line indicates a fold. When the corrugated cardboard packaging material 1 shown in FIG. 1 is bent at a fold shown by a dotted line, it is formed in a box shape as shown in FIG. The portion surrounded by the outline indicated by the solid line or the cut line and the extension line of the fold indicated by the dotted line becomes a flat portion or a space when bent into a box shape, and the upper top surface 1a and the lower top surface also shown in FIG. 1b, body surface 1c, first slit 1d, second slit 1f, first flap 1e, second flap 1g, and the like are formed.

  Details of part A and part B in FIG. 1 are shown in FIGS. 2 (a) and 2 (b), respectively. After being folded into a box shape as shown in FIG. 3 and further bent so that the lower top surface 1b is on the lower side and the upper top surface 1a is on the upper side, as shown in FIG. 1e fits into the first slit 1d, and the second flap 1g comes to a position where it fits into the second slit 1f. The second flap 1g is inserted into the second slit 1f, and the lower top surface 1b and the upper top surface 1a are locked in a state where the upper space of the box is closed.

  This embodiment differs from the conventional example in the dimensions and shapes of the first slit 1d and the second slit 1f. As shown in FIG. 2, both ends of the first slit 1d and the second slit 1f are inclined by 45 ° so as to be narrowed away from the fold.

  Further, in this embodiment, as shown in FIG. 2B, the length of the first slit 1d is narrower by about 1 to 2 mm on one side than the first flap 1e inserted therein. In addition, the effect is heightened by setting this dimension suitably according to the thickness of the corrugated cardboard material to be used.

  By making the dimensions and shape of the slits in this way, the flap to be inserted is accurately positioned and brought closer to the fold side to correct the distortion of the box. Further, since the length of the slit is narrower than the width of the flap, the flap is not strongly fitted into the slit and accidentally comes off. In addition, since the press contact portion gradually shifts at the time of insertion, the insertion operation is easier than the case where the wide portion is simultaneously strongly fitted. In addition, sufficient force which pushes a flap was obtained by making the inclination | tilt angle of both ends of a slit into 45 degrees.

  Further, since the cut 1h is formed so as to be connected to the fold of the second flap 1g, a convex piece is formed at the base of the second flap 1g as shown in FIG. 4, and the second flap 1g It can be easily extracted from the second slit 1f.

  FIG. 5 is a developed view of a corrugated cardboard packaging material according to Embodiment 2 of the present invention, and FIG. 6 is a perspective view showing the middle of packaging the product by folding the corrugated cardboard packaging material. The cardboard packaging material 2 of this embodiment is for fixing the position of the operation panel 3 with liquid crystal when the operation panel 3 with liquid crystal as an accessory is packed together with the main body in a cardboard box.

  In the cardboard packaging material 2 shown in FIG. 5, the solid line indicates the outline or the cut line, and the dotted line indicates the fold. When the corrugated cardboard packaging material 2 shown in FIG. 5 is bent at a fold as shown by a dotted line, it is formed in a square shape as shown in FIG.

  The portion surrounded by the outline indicated by the solid line or the cut line and the extended line of the fold indicated by the dotted line becomes a flat portion or a space when bent into a box shape, and the upper top surface 2a and the lower top surface also shown in FIG. 2b, body surface 2c, first slit 2d, first flap 2e, and the like are formed.

  When the first flap 2e shown in FIG. 6 is inserted into the first slit 2d, one side of the square shape is fixed. Since both ends of the first flap 2e are inclined so as to narrow in a direction away from the fold, the first flap 2e is accurately positioned and strongly fitted in the first slit 2d, and the upper ceiling The surface 2a is pulled outward, and the distortion of the square shape is corrected. And by the reaction force by which the upper top surface 2a is pulled outward, the body surface 2c is pulled inward, and the product can be firmly sandwiched.

  In this embodiment, since all the folded pieces of the corrugated cardboard packing material 2 are valley folds in the same direction, the force to open is increased by the residual elasticity, but the flap is firmly fixed and the operation panel 3 with liquid crystal is firmly attached. The enveloping power is obtained.

  Further, in this embodiment, since the legs are formed on the body surface 2c, even if the accessory supported by the bottom surface has a downward projecting portion, it can be stored well.

  The embodiment is configured as described above, but the invention is not limited to this. For example, if the slit width is smaller than the cardboard thickness, it becomes difficult to insert the flap, but the slit width is slightly smaller than the cardboard thickness. Even so, the effects of the present invention can be obtained.

It is an expanded view of the cardboard packaging material which is Example 1 of this invention. 2A is a detailed view of a portion A in FIG. 1, and FIG. 2B is a detailed view of a portion B in FIG. It is a perspective view which shows the state which bent the cardboard packing material into the box shape, and opened the lid | cover. It is a fragmentary perspective view which shows the state which bends the cardboard packing material in box shape and closes a lid | cover. It is an expanded view of the cardboard packaging material which is Example 2 of this invention. It is a perspective view which shows the middle of packaging the product by bending the cardboard packaging material. It is an expanded view which shows the example of the conventional cardboard packaging material. 8A is a detailed view of part A in FIG. 7, and FIG. 8B is a detailed view of part B in FIG. It is a perspective view which shows the state which bent the cardboard packing material into the box shape, and opened the lid | cover. It is a fragmentary perspective view which shows the state which bends the cardboard packing material in box shape and closes a lid | cover.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cardboard packaging material, 1a Upper top surface, 1b Lower top surface, 1c Body surface, 1d 1st slit, 1e 1st flap, 1f 2nd slit, 1g 2nd flap, 1h Cut 2 Cardboard packaging material 2a Upper top surface, 2b Lower top surface, 2c Body surface, 2d First slit, 1e First flap 3 Operation panel with liquid crystal 4 Corrugated cardboard packing material, 4a Upper top surface, 4b Lower top surface, 4c Body Surface, 4d first slit, 4e first flap, 4f second slit, 4g second flap

Claims (5)

A flat cardboard material with cuts and creases formed by folding the folds to form at least one B-shaped cross-section, and the top surface of the R-shaped cross-sections is formed by overlapping two layers A cardboard package in which a first slit is provided at an edge of the top surface, a first flap that is bent downward is provided at an edge of the upper surface, and the first flap is inserted into the first slit. A structure of a corrugated cardboard packaging material, wherein the left and right edges of the first slit are inclined so as to approach the inside when the first slit is separated from the bent portion. A flat cardboard material with cuts and creases formed by folding the folds to form at least one B-shaped cross-section, and the top surface of the R-shaped cross-sections is formed by overlapping two layers A first slit is provided in the vicinity of the bent portion of the top surface, a first flap that is bent downward is provided at an edge of the top surface on the upper side, and the first flap is inserted into the first slit. Further, in the corrugated cardboard packaging material in which a second slit is provided at an upper edge of the first flap and a second flap is inserted into the second slit, the left and right edges of the first slit are folded. A corrugated cardboard packaging structure characterized in that the left and right edges of the second slit are inclined so as to approach the inner side when they are separated from the bent part.   The structure of the corrugated cardboard packaging material according to claim 1 or 2, wherein a cross section in a direction perpendicular to the square-shaped cross section is also formed in a round shape and is formed in a rectangular shape as a whole. The cardboard packaging material structure according to any one of claims 1 to 3, wherein an inclination angle of left and right edges of the first slit or the second slit is 45 °. The length of the said 1st slit or the said 2nd slit is shorter than the width | variety of the said 1st flap and the said 2nd flap, respectively, The cardboard packaging material in any one of Claim 1 to 4 Construction.

Images