JP2010006400A - Corrugated fiberboard box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable to reuse a corrugated fiberboard box with a normal specification. <P>SOLUTION: The corrugated fiberboard box 10 is provided with a flap tip protective tape 31 consisting of a plastic film tape stuck on the surfaces over the whole lengths of flap tip parts 22A including predetermined regions on which a pressure-sensitive adhesive tape 30 for sealing both outer flaps 22 is stuck, and side wall protective tapes 32 consisting of the plastic film tapes stuck on the surfaces of the side walls containing predetermined regions on which the pressure-sensitive adhesive tape 30 for sealing both left and right side walls 11 is stuck. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a cardboard box.

  As a cardboard box, inner flaps are connected to the upper ends of the left and right side walls, outer flaps are connected to the upper ends of the front and rear side walls, and the outer flaps of the outer flaps face each other in a closed state from the left and right side walls. In some cases, an adhesive tape for sealing is attached to a range along the left and right side walls.

  In the cardboard box described in Patent Document 1, in order to reuse the cardboard box, the surface of the cardboard box can be easily opened by applying a surface treatment that makes it easy to peel off the sealing adhesive tape, for example, a laminating process of a resin film. When the sealing adhesive tape is peeled off, the surface of the cardboard box is prevented from being peeled off together with the sealing adhesive tape.

Moreover, in the corrugated cardboard box described in Patent Document 1, the portion of the corrugated cardboard box is doubly formed by folded pieces inward so that the edge of the outer flap of the cardboard box is not exposed. When the adhesive tape for sealing is peeled from the left or right side wall to the outer flap side, the adhesive tape for sealing peels off the rounded surface of the folded piece, and the front liner is peeled off from the small edge. Is not exposed.
JP 7-315364 A

  In the corrugated cardboard box described in Patent Document 1, a resin film is laminated on the surface of the cardboard box or a folded piece is provided on the outer flap. There are inconveniences such as a high cost and difficulty in the disposal of the cardboard and the resin film.

  In the future, however, it will be necessary to recycle the cardboard boxes with normal specifications due to the depletion of material resources and rising material prices.

  An object of the present invention is to reuse a cardboard box having a normal specification. Further, when the cardboard box is reused, it is possible to use the cardboard box automatic assembly machine and the automatic sealing machine with a minimum of modifications.

  According to the first aspect of the present invention, the inner flaps are continuously provided at the upper ends of the left and right side walls, the outer flaps are continuously provided at the upper ends of the front and rear side walls, and the outer flaps are closed along the leading ends of the flaps that face each other in the closed state. The cardboard box to which the adhesive tape for sealing is attached in the range from the left and right side walls to the left and right side walls, and the total length of the outer flap front ends including the planned area to which the adhesive tape for sealing is attached And the side wall protective tape are attached to the surface of the side wall including the area where the adhesive tape for sealing on the left and right side walls is to be attached.

  According to a second aspect of the present invention, in the first aspect of the present invention, the flap tip protective tape is folded and adhered to the back surface of the flap tip at both ends in the longitudinal direction of the flap tips of the outer flaps. It is what has been done.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the surface of the side wall including the region where the end portions of the sealing adhesive tape on the left and right side walls are attached is formed of a surface-peelable tape. A base tape for a tape terminal for an adhesive tape for sealing is attached.

  The invention of claim 4 is the cardboard box according to any one of claims 1 to 3, wherein at least two cardboard boxes are arranged side by side in the front-rear direction so that the cardboard boxes are adjacent to each other. Double packing tape for corrugated cardboard boxes in the range from one side wall edge to the other left and right side wall edges along the flap base end of the outer flap on the side where both cardboard boxes are in contact The surface of the side wall edge including the flap base end protective tape to be attached to the surface over the entire length of the flap base end including the region where the card is to be attached and the region to which the double packing tape of the cardboard box is to be attached And a side wall edge protection tape to be attached to.

  In the invention of claim 5, in the invention of claim 4, it is further easy to peel off the surface, which is attached to the surface of the side wall edge including the region where the end portions of the double packing tape on the left and right side wall edges are attached. A tape terminal base tape for a double packing tape made of an adhesive tape is provided.

  According to a sixth aspect of the present invention, in the fourth or fifth aspect of the present invention, the tape terminal base tape for the sealing adhesive tape and the tape terminal base tape for the double packing tape are a single base tape. It is made up of.

  1 and 2 show a cardboard box 10. This cardboard box 10 is repeatedly used as a returnable box, but even if it is used only once, it is temporarily opened and used when necessary to insert a warranty card during use. May be.

  The cardboard box 10 is an A type cardboard box, and an outer flap and an inner flap are connected to the upper and lower ends of the left and right side walls and the front and rear side walls, respectively, and the lid and the bottom are closed by the outer flap and the inner flap. Is. Hereinafter, the configuration on the lid side of the cardboard box 10 will be described, and the configuration on the bottom side will be omitted because it is the same as that on the lid side. However, the cardboard box 10 of the present invention may be of the A type having the above-mentioned outer flap and inner flap only for the lid and adopting a special assembly structure for the bottom. Special assembly structures include, for example, the B-type, Jigoku bottom, hell bottom, American lock etc. plug-in type structure, and the bottom one-touch box etc. And the like.

  The cardboard box 10 has left and right inner flaps 21 and 21 connected to the upper ends of the narrow left and right side walls 11 and 11, and front and rear outer flaps 22 and 22 are connected to the upper ends of the wide front and rear side walls 12 and 12. Sealing adhesive tape in the range from the left and right side walls 11 to the left and right side walls 11 along the flap front end 22A of both the outer flaps 22 and 22 that are closed in a closed state from the left and right side walls 11 30 is stuck and sealed.

  The sealing adhesive tape 30 is preferably a transparent OPP (stretched polypropylene) adhesive tape, a craft adhesive tape, or a cloth tape, but other commercially available packaging tapes can be used.

  However, the corrugated cardboard box 10 has the flap tip protective tape 31 attached to the surface range over the entire length of the flap tip portion 22A including the region where the sealing adhesive tape 30 for sealing the outer flaps 22 and 22 is to be attached. Have.

  At this time, as shown in FIG. 2, the flap tip protective tape 31 is folded and attached to the back surface of the flap tip 22A at both ends in the longitudinal direction of the flap tips 22A of the outer flaps 22 and 22. Can.

  Further, the cardboard box 10 is attached to the range of the surface of the side wall 11 (the width 2a wider than the full width of the sealing adhesive tape 30) including the planned area where the sealing adhesive tape 30 of the left and right side walls 11 and 11 is attached. Side wall protective tape 32 is provided. The side wall protective tape 32 may extend from the surface of the side wall 11 to the surface of the inner flap 21 and may be attached.

  As the flap tip protective tape 31 and the sidewall protective tape 32, a plastic film is preferable, and an OPP (stretched polypropylene) adhesive tape is particularly preferable. Furthermore, an adhesive tape such as vinyl chloride resin, olefin resin, or fluorine resin may be used. Further, a plastic adhesive tape having a minute convex portion on the surface, sufficient adhesiveness is generated when the sealing adhesive tape 30 is applied, and it can be easily removed when the sealing adhesive tape 30 is peeled off. What can be used can also be used. As the flap tip protective tape 31 and the side wall protective tape 32, a film material coated with an adhesive can be substituted, and the film material is a plastic film such as PP (polypropylene), PE (polyethylene), NY (nylon) / PE, A co-pressed film, a foamed film, a recycled film, a biodegradable film, a stretched / non-stretched film and the like are not particularly limited. Further, a laminate of a plurality of these materials may be used.

  The flap tip protective tape 31 and the side wall protective tape 32 may be metal films. In particular, an aluminum adhesive tape and a stainless adhesive tape are preferable. As the protective sheets 31, 32, a metal film material coated with an adhesive material can be substituted, and is not particularly limited, such as an iron material such as an aluminum material, a copper material, and stainless steel. A plastic film may be laminated on the surface of the metal film.

  The flap tip protective tape 31 and the sidewall protective tape 32 may be paper sheets. In particular, a gum tape is preferable, and a kraft adhesive tape may be used. The gum tape referred to here is a tape obtained by applying a water-soluble paste material to kraft paper and drying it, and in use, refers to a tape which supplies moisture to activate the paste portion. In the case of a kraft pressure-sensitive adhesive tape, it is preferable that the surface silicon treatment is minimal and sufficient adhesiveness is generated when the sealing pressure-sensitive adhesive tape 30 is applied. As the protective sheets 31 and 32, a paper-based material coated with an adhesive can be substituted.

  The flap tip protective tape 31 and the side wall protective tape 32 may be made of cloth. A cloth adhesive tape is particularly preferable. The material of the cloth portion is not particularly limited, such as synthetic fiber such as sufumos, plastic such as acrylic, glass cloth, and the like. As the protective sheets 31 and 32, cloth materials coated with an adhesive can be used instead.

  The flap tip protective tape 31 and the side wall protective tape 32 may be rubber sheets. A rubber adhesive tape is particularly preferable. The material of the rubber part is not particularly limited, such as urethane rubber or silicone rubber. As the protective sheets 31 and 32, a rubber sheet material coated with an adhesive can be substituted.

  Here, as the flap tip protective tape 31 and the side wall protective tape 32, those which can be stuck with an appropriate adhesive strength are preferable. This is to minimize the damage to the surface of the cardboard box 10 and to reduce the labor when the protective tape is removed when the protective tape needs to be replaced.

  As shown in FIGS. 1 and 2, the relationship a = αx between the half width x of the sealing adhesive tape 30 and the width a of the flap tip protection tape 31 is preferably α = 1.0 to 4.0, and 1.1 to 3.0. Is more preferable, and most preferably 1.5 to 2.5. When the value of α is smaller than 1, the sealing adhesive tape 30 is in direct contact with the outer flap 22 and the surface of the outer flap 22 is easily damaged when the sealing adhesive tape 30 is peeled off. Even if α = 1, the sealing tape 30 for sealing may come into direct contact with the outer flap 22 if a sticking error occurs. If the value of α is too large, the width of the flap tip protection tape 31 must be increased, resulting in waste.

  As shown in FIGS. 1 and 2, the relationship c = γ · 2x between the width 2x of the sealing adhesive tape 30 and the width c of the side wall protective tape 32 is preferably γ = 1.0 to 4.0, more preferably 1.1 to 3.0. Preferably, it is 1.5 to 2.5. When the value of γ is smaller than 1, the sealing adhesive tape 30 is in direct contact with the side wall 11 and the surface of the side wall 11 is easily damaged when the sealing adhesive tape 30 is peeled off. Even if γ = 1, the sealing tape 30 for sealing may come into direct contact with the side wall 11 if a sticking error occurs. If the value of γ is too large, the width of the side wall protective tape 32 must be increased, resulting in waste.

  The cardboard box 10 is made of a surface peelable tape that is attached to the surface area of the side wall 11 including a region where the terminal portion 30A of the adhesive tape 30 for sealing the left and right side walls 11 and 11 is attached. A tape terminal base tape 33 for the sealing adhesive tape 30 can be provided.

  As the tape terminal base tape 33, a tape whose surface adhesion is reduced with a release agent such as silicon, such as a silicon-impregnated kraft adhesive tape, a silicon-impregnated glass cloth tape, or a silicon tape, can be used. Moreover, the tape which reduced the adhesiveness of the surface with the plastic adhesive tape which has a micro convex part on the surface can also be used.

  Therefore, in the cardboard box 10, the left and right outer flaps 22, 22 are closed, and the side walls are protected from the tape terminal base tape 33 in which one end of the sealing adhesive tape 30 is adhered to the surface of the left and right side walls 11. Affixing to the tape 32, the sealing adhesive tape 30 is applied to the flap tip protective tape 31 attached to the surface of the flap tip 22A of the outer flaps 22 and 22, and the other end of the sealing adhesive tape 30 is connected to the other side The cardboard box 10 is sealed by finishing the tape terminal base tape 33 through the side wall protective tape 32 adhered to the surface of the side wall 11.

  3 and 4 show two double-packed cardboard boxes 10, each of which is attached with the above-mentioned flap tip protective tape 31, side wall protective tape 32, and tape terminal base tape 33. These are sealed with a sealing adhesive tape 30.

  That is, in FIGS. 5 and 6, two cardboard boxes 10 are juxtaposed in the front-rear direction, and the left and right side walls 11 of adjacent cardboard boxes 10, 10 are combined to form a single unit. The cardboard boxes 10 and 10 that are in contact with each other in the front-rear direction from the side wall edge 11A (the edges of the left and right side walls 11 near the front and rear side walls 12) are the flap base end portions 22B of the outer flaps 22 in the cardboard boxes 10 (outside A double packing tape 40 is attached to a range of the surface of the flap 22 to the side wall edge 11A of the other side wall 11 along the front and rear side walls 12 near the front and rear side walls 12; It is one thing.

  By performing the process only on the upper surface portion of the cardboard box 10, it is possible to reuse the cardboard box 10 without opening and closing only the upper surface portion. When used in this way, the lower surface portion of the cardboard box 10 may be sealed by a known method such as sealing tape, sealing with hot melt, or a bottomed structure.

  Moreover, if the said process is performed to the upper surface part and lower surface part of the cardboard box 10, the cardboard box 10 can be folded after use, and then reassembled and reused. Of course, the cardboard box 10 can be reused by opening and closing only the upper surface portion without being folded after use.

  Further, if the above processing is performed only on the upper surface portion of the cardboard box 10 and the bottom surface portion of the cardboard box 10 has a bottomed structure that does not use sealing adhesive such as sealing tape or hot melt, the cardboard box. 10 can be folded after use and then reassembled and reused.

  As the double packing tape 40, a transparent OPP (stretched polypropylene) adhesive tape, a kraft adhesive tape, or a cloth tape is preferable in the same manner as the sealing adhesive tape 30, but other commercially available packing tapes can be used.

  However, the cardboard box 10 has the flap base end protective tape 41 attached to the surface range over the entire length of the flap base end portion 22B including the region where the double packing tape 40 is to be attached.

  At this time, as shown in FIG. 4, the flap base end protective tape 41 is folded back to the back surface of the flap base end portion 22B at both longitudinal ends of the flap base end portions 22B of the outer flaps 22 and 22. Can be affixed.

  Moreover, the cardboard box 10 has the side wall edge part protection tape 42 stuck on the range of the surface of the side wall edge part 11A of the side wall 11 including the plan area | region where the double packing tape 40 is stuck. The side wall edge protection tape 42 may extend from the surface of the side wall edge 11 </ b> A of the side wall 11 to the surface of the inner flap 21 and be attached.

  As the flap base end protective tape 41 and the side wall edge protective tape 42, a plastic film is preferable, and an OPP (stretched polypropylene) adhesive tape is particularly preferable. Furthermore, an adhesive tape such as vinyl chloride resin, olefin resin, or fluorine resin may be used. Further, a plastic adhesive tape having a minute convex portion on the surface, sufficient adhesiveness is generated when the sealing adhesive tape 30 is applied, and it can be easily removed when the sealing adhesive tape 30 is peeled off. What can be used can also be used. As the flap base end protective tape 41 and the side wall edge protective tape 42, a film material coated with an adhesive can be substituted, and the film material is made of PP (polypropylene), PE (polyethylene), NY (nylon) / PE or the like. A plastic film, a co-pressed film, a foamed film, a recycled film, a biodegradable film, a stretched / non-stretched film and the like are not particularly limited. Further, a laminate of a plurality of these materials may be used.

  The flap base end protective tape 41 and the side wall edge protective tape 42 may be a metal film. In particular, an aluminum adhesive tape and a stainless adhesive tape are preferable. As the protective sheets 31, 32, a metal film material coated with an adhesive material can be substituted, and is not particularly limited, such as an iron material such as an aluminum material, a copper material, and stainless steel. A plastic film may be laminated on the surface of the metal film.

  The flap base end protective tape 41 and the side wall edge protective tape 42 may be paper sheets. In particular, a gum tape is preferable, and a kraft adhesive tape may be used. The gum tape referred to here is a tape obtained by applying a water-soluble paste material to kraft paper and drying it, and in use, refers to a tape which supplies moisture to activate the paste portion. In the case of a craft adhesive tape, it is preferable that the silicon treatment on the surface is minimal and sufficient adhesiveness is generated when the sealing adhesive tape 30 is applied. As the protective sheets 31 and 32, a paper-based material coated with an adhesive can be substituted.

  The flap base end protection tape 41 and the side wall edge protection tape 42 may be made of cloth. A cloth adhesive tape is particularly preferable. The material of the cloth portion is not particularly limited, such as synthetic fiber such as sufumos, plastic such as acrylic, glass cloth, and the like. As the protective sheets 31 and 32, cloth materials coated with an adhesive can be used instead.

  The flap base end protective tape 41 and the side wall edge protective tape 42 may be rubber sheets. A rubber adhesive tape is particularly preferable. The material of the rubber part is not particularly limited, such as urethane rubber or silicone rubber. As the protective sheets 31 and 32, a rubber sheet material coated with an adhesive can be substituted.

  Here, as the flap base end protective tape 41 and the side wall edge protective tape 42, those which can be attached with an appropriate adhesive force are preferable. This is to minimize the damage to the surface of the cardboard box 10 and to reduce the labor when the protective tape is removed when the protective tape needs to be replaced.

  As shown in FIGS. 3 and 4, the relationship between the half width y of the double packing tape 40, the width b1 of the flap base end protection tape 41, and the width b2 of the side wall edge protection tape 42, b1 = βy and b2 = Βy is preferably β = 1.0 to 4.0, more preferably 1.1 to 3.0, and most preferably 1.5 to 2.5. When the value of β is smaller than 1, the double packing tape 40 is in direct contact with the outer flap 22 and the side wall 11, and the surface of the outer flap 22 and the side wall 11 is easily damaged when the double packing tape 40 is peeled off. Even if β = 1, if the misalignment occurs, the double packing tape 40 may come into direct contact with the outer flap 22 or the side wall 11. If the value of β is too large, the width of the flap base end protection tape 41 and the width of the side wall edge protection tape 42 must be increased, resulting in waste.

  Further, the corrugated cardboard box 10 is easily peeled off at the surface of the side wall edge 11A including the planned area where the end 40A of the double packing tape 40 of the side wall edge 11A of the left and right side walls 11 is pasted. A tape terminal base tape 43 for the double packing tape 40 made of an adhesive tape can be provided. The tape terminal base tape 43 may be stuck at the side wall edge 11A, but it is more preferable to extend to the front and rear side walls 12 from the viewpoint of preventing peeling of the end of the tape terminal base tape 43 itself. .

  As the tape terminal base tape 43, in the same manner as the tape terminal base tape 33, surface adhesion was reduced with a release agent such as silicon impregnated kraft adhesive tape, silicon impregnated glass cloth tape, or silicon tape. Tape can be used. Moreover, the tape which reduced the adhesiveness of the surface with the plastic adhesive tape which has a micro convex part on the surface can also be used.

  At this time, the tape terminal base tape 33 for the sealing adhesive tape 30 and the tape terminal base tape 43 for the double packing tape 40 are long single bases as shown in FIGS. It can consist of tape. The sticking of the long single base tape may be fastened at the side wall edge portion 11A, but it is better to extend to the front and rear side walls 12 to prevent the end of the long single base tape itself from peeling off. It is more preferable from the point.

  The corrugated cardboard box 10 shown in FIGS. 3, 4, 5, and 6 includes a flap base end 22 </ b> B of the outer flap 22 along each of the front and rear side walls 12 and a flap base end along the side wall edge 11 </ b> A of the side wall 11. Since the protective tape 41, the side wall edge protective tape 42, and the tape terminal base tape 43 are provided, the double packing tape 40 allows the other cardboard boxes 10 to be adjacent to both the front and rear surfaces of each cardboard box 10. Double packing is possible. However, the cardboard box 10 includes a flap base end protection tape 41, a side wall edge protection tape 42, and a flap base end protection tape 41 only along the side wall edge 11A of the side wall 11. A tape terminal base tape 43 may be provided, and the other cardboard boxes 10 may be adjacent to each other only on the front and back surfaces of each cardboard box 10 and double-packed with the double packing tape 40.

According to the present embodiment, the following operational effects can be obtained.
(Claim 1)
(a) A flap tip protective tape 31 and a side wall protective tape 32 are adhered to the surfaces of both outer flaps 22 and 22 and the left and right side walls 11 and 11 of the cardboard box 10, and the sealing adhesive tape 30 is attached to the flap tip protective tape. 31 and the side wall protective tape 32. When the sealing pressure-sensitive adhesive tape 30 is peeled off for opening, the sealing pressure-sensitive adhesive tape 30 is peeled off from the flap tip protective tape 31 and the side wall protective tape 32, and the surface of the cardboard box 10 is not peeled off. The cardboard box 10 can be reused without damaging the surface.

(Claim 2)
(b) The flap tip protection tape 31 is folded and attached to the back surface of the flap tip 22A at both ends in the longitudinal direction of the flap tip 22A of the outer flaps 22 and 22, so that the outer The edge of the flap tip 22A of the flap 22 is not exposed. When the sealing adhesive tape 30 is peeled from the side wall protective tape 32 toward the flap tip protective tape 31, the sealing adhesive tape 30 peels off the surface of the folded portion of the flap tip protective tape 31, from the corrugated cardboard edge. The cardboard box 10 can be reused without the front liner being peeled off and the core being exposed.

(Claim 3)
(c) A tape terminal base tape 33 made of a surface peelable tape is attached to the surfaces of the left and right side walls 11 of the cardboard box 10, and the terminal portion 30 A of the sealing adhesive tape 30 is attached to the tape terminal base tape 33. I wore it. When the sealing adhesive tape 30 is peeled off for opening, the terminal portion 30A of the sealing adhesive tape 30 is easily peeled off, and the peeling workability of the sealing adhesive tape 30 can be improved.

(Claim 4)
(d) A flap base protection tape 41 and a side wall edge protection tape 42 are attached to the surfaces of the outer flaps 22 and 22 and the left and right side walls 11 and 11 of the cardboard box 10, and the double packing tape 40 is adjacent to the corrugated cardboard. It stuck on the flap base end protective tape 41 and the side wall edge protective tape 42 of the boxes 10 and 10. When the double packing tape 40 is peeled off to separate the adjacent cardboard boxes 10, 10, the double packing tape 40 is peeled off from the flap base end protection tape 41 and the side wall edge protection tape 42, and the cardboard box 10 The cardboard box 10 can be reused without peeling off the surface and without damaging the surface of the cardboard box 10.

(Claim 5)
(e) A tape terminal base tape 43 made of a surface peelable tape is attached to the surface of the side wall edge 11A of the left and right side walls 11 of the cardboard box 10, and the terminal portion 40A of the double packing tape 40 is attached to the tape terminal base. Affixed to tape 43. When the double packing tape 40 is peeled for separating adjacent cardboard boxes 10, 10, the terminal portion 40 </ b> A of the double packing tape 40 is easily peeled off, so that the workability of peeling the double packing tape 40 can be improved.

(Claim 6)
(f) The tape terminal base tape 33 for the sealing adhesive tape 30 of the above (c) and the tape terminal base tape 43 for the double packing tape 40 of the above (e) are made of a single base tape. It was a thing. The workability of attaching these two types of tape terminal base tapes 33 and 43 to the cardboard box 10 can be improved.

(Claims 1-6)
(g) Flap front end protection tape 31, side wall protection tape 32, tape base tape 33 for sealing adhesive tape 30, flap base end protection tape 41, side wall edge protection tape 42, double packing tape 40 By providing the tape terminal base tape 43, the strength of the corrugated cardboard box 10 itself is not changed, so that almost no modification of the packing device for packing the articles in the corrugated cardboard box 10 is required.

  (h) There is almost no increase in the unit price of the box due to the provision of each tape described in (g) above, and even if it is discarded at the distribution end of a retail store or the like, the economic loss is small.

  (i) When the corrugated cardboard box 10 is discarded, it is easy to separate dust by simply removing the tapes described in (g), and the corrugated cardboard can be reused as recycled paper.

FIG. 1 is a schematic view showing a sealed state of a cardboard box. FIG. 2 is a schematic view showing the cardboard box of FIG. FIG. 3 is a schematic diagram showing a double packing state of two cardboard boxes. FIG. 4 is a schematic view showing the cardboard box of FIG. FIG. 5 is a schematic view showing another example of a double packing state of two cardboard boxes. FIG. 6 is a schematic view showing the cardboard box of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Corrugated cardboard box 11 Right and left side wall 12 Front and rear side wall 21 Inner flap 22 Outer flap 30 Sealing adhesive tape 30A End part 31 Flap tip protection tape 32 Side wall protection tape 33 Tape terminal base tape 40 Double packing tape 40A End part 41 Flap base end protection Tape 42 Side wall edge protection tape 43 Base tape for space terminal

Claims (6)

Inner flaps are connected to the upper ends of the left and right side walls,
An outer flap is connected to the upper ends of the front and rear side walls,
A corrugated cardboard box in which an adhesive tape for sealing is attached in a range from the left and right side walls to the left and right side walls along the flap front ends of both outer flaps that face in the closed state.
Flap tip protection tape on the surface over the entire length of both outer flap tips including the area where the sealing adhesive tape is to be attached,
Side wall protective tape on the surface of the side wall including the area where the adhesive tape for sealing on the left and right side walls is to be attached,
Cardboard boxes attached to each.   The cardboard box according to claim 1, wherein the flap tip protection tape is folded and attached to the back surface of the flap tip at both ends in the longitudinal direction of the flap tips of both outer flaps.   Claims in which a tape terminal base tape for a sealing adhesive tape made of a surface peelable tape is attached to the surface of a side wall including a region where a terminal portion of the sealing adhesive tape on the left and right side walls is attached. Item 3. A cardboard box according to item 1 or 2. A cardboard box according to any one of claims 1 to 3,
In order to place the cardboard boxes together in the front-rear direction at least two, the cardboard boxes on the side where the cardboard boxes touch each other in the range from the left and right side wall edges of the adjacent cardboard boxes to the left and right side wall edges. To stick double packing tape along the flap base end of the outer flap,
A flap base end protective tape attached to the surface over the entire length of the flap base end including the region where the double packing tape of the cardboard box is attached;
A cardboard box provided with a side wall edge protection tape to be attached to the surface of the side wall edge including a region where a double packing tape of the cardboard box is to be attached.   Tape terminal base for double packing tape, consisting of a surface peelable tape, which is attached to the surface of the side wall edge including the area where the end of the double packing tape on the left and right side wall edges is to be attached The cardboard box according to claim 4, wherein a tape is provided.   The corrugated cardboard box according to claim 4 or 5, wherein the tape terminal base tape for the sealing adhesive tape and the tape terminal base tape for the double packing tape comprise a single base tape.

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