JP7072365B2 - Blank sheet for portable packaging box and portable packaging box - Google Patents

Description

The present invention relates to a blank sheet of a portable packaging box and a portable packaging box.

As a material for packing articles to be delivered, a wide variety of packaging boxes have been developed, such as those having a one-touch bottom structure that is easy to assemble as disclosed in Patent Document 1. In recent years, with the expansion of mail-order sales such as online shopping, packed products have been delivered to places that are convenient for purchasers, such as delivery boxes installed in public places such as convenience stores and stations. The delivery form that the purchaser takes home from the mail order is spreading. Some of the delivered products have a heavy load, and considering the convenience of carrying them to the final destination, it is desirable that the packaging box is provided with a handle and can be carried by one hand. As such a packaging box for hand-carrying, a rectangular parallelepiped shape that has no unevenness when transported by a trader has been developed so that a part of the packaging box can be raised and used as a handle when carrying by hand (for example). The following patent documents 2 and 3).

The packaging box described in Patent Document 2 or 3 has a side plate portion forming a square cylinder, and a top plate flap and a bottom plate flap for closing the opening of the square cylinder. Further, the packaging box is configured to form two slits extending from one of the top plate flaps to the facing bottom plate flaps through the side plate portion, and pull up between the slits to serve as a handle. Both the top plate flap and the bottom plate flap are formed in a substantially rectangular shape, and the top plate flap and the bottom plate flap are adhered to each other in a closed state. The two slits are formed over both ends in the longitudinal direction of the side plate portion, and are formed to some extent deeply in the top plate flap and the bottom plate flap so that the central portion of the handle is sufficiently pulled up.

Since the handle of such a conventional packaging box has to allow the end portion to enter the inside of the box when it is raised, another top plate flap or the like that overlaps with the top plate flap on which the handle is formed at the end portion of the handle, etc. I can't stick it. However, in these conventional packaging boxes, the end of the handle is formed at the center of each of the rectangular top plate flap and bottom plate flap in the width direction, so even if the same portion is avoided, the top plate flap or the like is blocked. There was no particular problem with keeping it fixed.

Japanese Unexamined Patent Publication No. 2016-216126 Japanese Patent No. 3913789 Japanese Patent No. 6042581

In conventional packaging boxes such as Patent Documents 2 and 3, since the top plate flap and the bottom plate flap cannot be adhered in a blank state, the top plate flap or the like must be adhered at the time of box making, and the box is made. It was inconvenient for users who packed and used products.
However, in the packaging box having a so-called one-touch bottom shown in Patent Document 1, the bottom plate flap is formed in a substantially trapezoidal shape. If the slit forming the handle is extended to the bottom plate flap of such a one-touch bottom, the adhesion becomes insufficient. Therefore, until now, it has not been possible to form a slit for the handle in the one-touch bottom packaging box.
Therefore, the present invention provides a blank sheet of a portable packaging box and a portable packaging box having a so-called one-touch bottom for easy box making and a slit in which a handle that can be pulled up can be configured.

The blank sheet of the portable packaging box of the present invention has a cylinder formed by assembling a plurality of side plates, a top plate flap that closes one opening of the cylinder, and the other opening of the cylinder. It is provided with a bottom plate flap for closing, and extends from the first top plate flap connected to the first side plate portion constituting one of the plurality of side plate portions to the first side plate portion and faces each other of the first side plate portions. Two slits extending to the middle of the two sides are formed.
According to this configuration, the length of the slit can be made compact and the handle can be easily pulled up.

The bottom plate flaps of the blank sheet of the portable packaging box of the present invention overlap when folded flat, and adjacent bottom plate flaps are connected to each other, standing between the ends of the flatly folded cylinder. It may be a one-touch bottom that closes the opening of the cylinder as the operation of raising it to make it three-dimensional.
According to this configuration, a packaging box having a handle can be made very easily.

The two slits of the blank sheet of the portable packaging box of the present invention may be formed wide at the end portion on the flap side of the first top plate.
According to this configuration, when the handle is pulled up, the end portion on the flap side of the first top plate can be locked to the first side plate portion.

The first side plate portion of the blank sheet of the portable packaging box of the present invention is folded to form two layers, an outer layer portion and an inner layer portion, and the two slits penetrate the outer layer portion and the inner layer portion. The end portion of the two slits formed on the first side plate portion side may have the outer layer portion formed narrower than the inner layer portion.
According to this configuration, when the handle is raised, the end portion of the outer layer portion formed on the first side plate portion side is raised, but the end portion of the inner layer portion below the handle engages with the first side plate portion side to form the outer layer. Not triggered with the end of the part. Therefore, since the starting point of the end formed on the first side plate portion changes, the load due to the contained article is dispersed.

The ends of the two slits formed in the inner layer portion of the blank sheet of the portable packaging box of the present invention have the tips of the two slits formed in the outer layer portion sandwiched between the ends. They may gradually expand toward each other.
According to this configuration, it is possible to prevent the tip of the slit formed in the inner layer portion from interfering with the slit formed in the outer layer portion, and it is possible to more effectively disperse the load due to the contents.

When the blank sheet of the portable packaging box of the present invention is manufactured, a joint portion is formed in the side plate portion adjacent to the first side plate portion, and the joint portion is adjacent to the first side plate portion and the first side plate portion. It may have a proximal end surface portion that joins between the matching side plate portions and a tip end surface portion that is continuous with the proximal end surface portion and covers the two slits from the inner surface of the first side plate portion.
According to this configuration, since the two slits are covered by the tip surface portion, the opening formed when the handle is pulled up can be covered by the tip surface portion.

The tip surface portion of the blank sheet of the portable packaging box of the present invention has a locking side orthogonal to the two slits on the flap side of the first top plate when stacked on the first side plate portion. You may.
According to this configuration, it is possible to suppress the entry of the handle into the inside of the opening by the locking side and to apply the load applied to the handle to the tip surface portion.

The portable packaging box of the present invention is formed by using any of the above blank sheets.
According to this configuration, any of the above actions and functions is exhibited.

The blank sheet of the portable packaging box and the portable packaging box of the present invention have a handle that is easy to make and pull out, and have an effect that they can be conveniently used for transportation and carrying by hand.

It is a perspective view which showed the packaging box which concerns on one Embodiment of this invention. It is a developed view of the blank sheet which concerns on one Embodiment of this invention. FIG. 3 is a perspective view showing a state of the handle and the first top plate flap when the handle of the packaging box according to the embodiment of the present invention is raised by breaking a part of the fourth top plate flap. It is a front view which shows the thing which assembled the blank sheet which concerns on one Embodiment of this invention and made it into a flat state before box making. It is a top view which opened and showed the packaging box which concerns on one Embodiment of this invention. It is a perspective view which showed the packaging box which concerns on one Embodiment of this invention. FIG. 3 is a cross-sectional view taken along the line YY of the packaging box shown in FIG. It is an upper perspective view which showed the state which caused the handle of the packaging box which concerns on one Embodiment of this invention.

Hereinafter, embodiments of the packaging box of the present invention will be described with reference to the drawings. The dimensions of each part of the figure used in the following description are not always the same as the actual ones, and can be changed as appropriate. In the present embodiment, each part of the present invention may be referred to as an upper side, a lower side, a side side, etc., but these are relative to each part when the blank sheet or the packaging box is viewed with the bottom plate flap as the lower surface, unless otherwise specified. This is to show the positional relationship, and does not necessarily determine the orientation of the packaging box.

As shown in FIG. 1, the blank sheet (hereinafter referred to as “blank sheet”) 1 of the portable packaging box according to the first embodiment of the present invention is formed by assembling a plurality of side plate portions 2, 3, 4, and 5. The cylinder 6 is provided with top plate flaps 8, 9, 10, 11 for closing one opening 7 of the cylinder 6, and a one-touch bottom 13 for closing the other opening 12 of the cylinder 6. Further, the blank sheet 1 is formed with two slits S extending from the first top plate flap 8 connected to the first side plate portion 2 to a position on the first side plate portion 2, and is freely formed by raising the handle 14. There is.

FIG. 2 is a view seen from the inner surface when the blank sheet 1 is used as the packaging box X. As shown in FIG. 2, the plurality of side plate portions are composed of a first side plate portion 2, a second side plate portion 3, a third side plate portion 4, and a fourth side plate portion 5, and a substantially rectangular parallelepiped tubular body 6 shown in FIG. Can be formed. The first side plate portion 2, the second side plate portion 3, the third side plate portion 4, and the fourth side plate portion 5 are connected in this order on the side side 6a extending between them in one direction.
The outer layer portion 2A and the third side plate portion 4 described later of the first side plate portion 2 are formed in a rectangular shape having substantially the same dimensions in the extending direction of the side side 6a and in the direction of the upper side 6b or the lower side 6c orthogonal to the extending direction. .. The second side plate portion 3 and the fourth side plate portion 5 are formed in a rectangular shape having substantially the same dimensions in the extending direction of the side side 6a and in the direction of the upper side 6b or the lower side 6c orthogonal to the extending direction.

The first side plate portion 2 is connected to the outer layer portion 2A which is connected to the second side plate portion 3 and appears on the outer surface at the time of box making, and the inner layer portion 2B which is connected to the outer layer portion 2A and is bent and overlapped on the inner surface 40 side of the outer layer portion 2A. It has a two-layer structure with and.
The inner layer portion 2B has a substantially trapezoidal notch 25k that avoids overlapping with the first bottom plate flap 25 that is folded back toward the inner surface 40 side of the outer layer portion 2A in a state where the blank sheet 1 is folded flat before box making as shown in FIG. Is formed.

Top plate flaps 8A and 8B having a substantially trapezoidal shape are connected to each upper side 6b of the outer layer portion 2A and the inner layer portion 2B of the first side plate portion 2. The top plate flap 8A connected to the outer layer portion 2A is formed in a size capable of covering the entire top plate flap 8B connected to the inner layer portion 2B.
Two slits S extending in the connecting direction thereof are formed in parallel on the inner layer portion 2B and the top plate flap 8B connected to the inner layer portion 2B at predetermined intervals.

The two slits S and S extend substantially linearly from the substantially central portion of the top plate flap 8B to the inner layer portion 2B beyond the upper side 6b with the blank sheet 1 unfolded, and the notch 25k of the inner layer portion 2B. It extends to the vicinity of.
The two slits S and S are extended to the top plate flap 8B so that when the top plate flap 8 is bent approximately 90 degrees with respect to the first side plate portion 2 as shown in FIG. 3, between the slits S and S. The corners of the sill are pushed in so that they have a straight or substantially curved shape. As a result, the space between the slits S and S can be bent in an arc shape to the outside of the first side plate portion 2 to form the handle 14.

As shown in FIG. 2, the length of the two slits S and S in the top plate flap 8B, that is, the length of the end portion 14a of the handle 14 on the top plate flap 8B side is arbitrary. If the length of the end portion 14a is too short, the deflection between the two slits S and S becomes small and it becomes difficult to hold the handle 14, and if it is too close to the tip edge of the top plate flap 8B, it is connected to the top plate flap 8B. The portion may become smaller and the slits S and S may be torn. Therefore, it is preferable to adjust the length of the end portion 14a in relation to the extending length of the top plate flap 8B so that the pulled up handle 14 can be appropriately gripped by a human hand.
The end portion 14a on the top plate flap 8B side is formed to be larger than the dimension between the two slits S and S in the first side plate portion 2, and the overhanging portion of the slits S and S in both width directions is the overhanging corner portion 35. Consists of.

The end portion 14b of the two slits S, S on the inner layer portion 2B side is easily broken because the handle 14 is firmly connected to the inner layer portion 2B when the handle 14 is used between the slits S and S. It is formed so as to have a sufficient space between it and the notch 25k so as not to be present. If the handle 14 can be sufficiently raised, the end portion 14b on the inner layer portion 2B side may be separated from the notch 25k and the central portion in the longitudinal direction of the inner layer portion 2B as long as it is provided in the intermediate portion between the upper side 6b and the lower side 6c. Further, it may be formed closer to the upper side 6b.
Further, the end portion 14b is smoothly expanded toward the tip end by forming the tip end of the slit S into an arc shape.

A handle portion 14T is formed between both end portions 14a and 14b of the handle 14.
On both outer sides of the two slits S and S, the handle 14 is gripped from both sides of the handle 14 at the center of the first side plate portion 2 in the longitudinal direction (extending direction of the side side 6a) to facilitate pulling out. A substantially semi-circular notch 14k is formed. The notch 14k may be formed in a size that can accommodate, for example, an adult's fingertip.

The outer layer portion 2A of the first side plate portion 2 and the top plate flap 8A connected to the outer layer portion 2 have two slits S of the inner layer portion 2B with the bending line L1 between the inner layer portion 2B and the outer layer portion 2A as the center line. , S, two slits S, S are provided so as to be substantially axisymmetric.

The width dimension of the end portion 14c on the top plate flap 8A side is formed to be slightly smaller than the width dimension of the end portion 14a on the top plate flap 8B side, but the overhanging corner portion 35 is formed as in the inner layer portion 2B. There is. The handle portion 14T of the handle 14 formed on the outer layer portion 2A is formed to be slightly larger in the width direction than the handle portion 14T of the inner layer portion 2B.

The end portion 14d formed on the outer layer portion 2A side is formed so as to have a width smaller than that of the handle portion 14T, and then the tips of both slits S and S extend in opposite directions while drawing an arc shape. It has an expanded shape. As a result, stepped portions 36 projecting between the slits S and S are formed on both sides of the end portion 14d on the outer layer portion 2A side.
The end portion 14d on the outer layer portion 2A side is formed so that the positions of the end portion 14b on the inner layer portion 2B side and the side side 6a in the extending direction (that is, the longitudinal direction) are substantially the same. Therefore, the stepped portion 36 forming the narrow portion of the end portion 14d overlaps the upper portion of the end portion 14b, and the rising of the end portion 14b can be prevented.

With this configuration, when the first side plate portion 2 is doubly bent at the bending line L1 and the inner layer portion 2B is overlapped on the inner surface 40 of the outer layer portion 2A, the end portion 14a formed on the top plate flap 8B is the top plate. The flaps 8A are stacked so as to cover the entire end portion 14c formed. Further, the handle portion 14T of the inner layer portion 2B is overlapped inward in the width direction so as to be covered with the handle portion 14T of the outer layer portion 2A. The end portion 14b on the inner layer portion 2B side is overlapped so as to cover the end portion 14d on the outer layer portion 2A side. In this state, the tip portions of the slits S and S forming the end portion 14b on the inner layer portion 2B side do not interfere with the tip portions of the slits S and S forming the end portion 14d on the outer layer portion 2A side. It has expanded to.
The top plate flap 8A connected to the outer layer portion 2A and the top plate flap 8B connected to the inner layer portion 2B form the first top plate flap 8 when they are overlapped with each other.

A substantially rectangular second top plate flap 9 having a short extension dimension is connected to the upper side 6b of the second side plate portion 3. As shown in FIG. 7, the extension dimensions of the second top plate flap 9 from the upper side 6b are the ends 14a and 14c of the handles 14 formed on the first top plate flaps 8 adjacent to each other in the orthogonal direction at the time of box making. It is set to the extent that it does not overlap with. An insertion slit 16 is formed between the second side plate portion 3 and the second top plate flap 9.
A substantially trapezoidal third top plate flap 10 is provided on the upper side 6b of the third side plate portion 4.
A fourth top plate flap 11 having a size that just covers the entire opening 7 of one of the cylinders 6 shown in FIG. 1 is provided on the upper side 6b of the fourth side plate portion 5. The fourth top plate flap 11 constitutes a lid member.

At the substantially central portion of the fourth top plate flap 11 in the extending direction, a box is made, the opening 7 shown in FIG. 1 is closed by the fourth top plate flap 11, and then the fourth top plate flap 11 is broken. The opening break portion 15 is formed by two break lines 15a and 15a.
At the tip of the fourth top plate flap 11, an insertion piece 17 to be inserted into the insertion slit 16 at the time of box making is formed. The tip corner portion of the insertion piece 17 is rounded so as to be easy to insert into the insertion slit 16 at the time of box making.

The first side plate portion 2 and the fourth side plate portion 5 are connected to the side side 6a of the fourth side plate portion 5 facing the side side 6a to which the third side plate portion 4 is connected to form the tubular body 6 shown in FIG. The joints 20 are connected to each other.
The joint portion 20 is provided with a width dimension smaller than the width dimension of the first side plate portion 2 (that is, the dimension in the extending direction of the upper side 6b).

Specifically, the joint portion 20 has a substantially trapezoidal base end surface portion 21 whose width gradually narrows toward the virtual intermediate line L2 extending in parallel with the side side 6a, and a proximal end surface in the virtual intermediate line L2. It has a substantially rectangular tip surface portion 22 continuous with the portion 21.
The upper side 6b of the base end surface portion 21 is gently inclined in the lower side 6c direction. The upper side 6b (locking side) of the tip end surface portion 22 extends parallel to the upper side 6b of the fourth side plate portion 5 from the tip end of the upper side 6b of the base end surface portion 21. As a result, a gap of several mm to several cm is formed between the upper side 6b of the tip surface portion 22 and the extension line of the upper side 6b of the fourth side plate portion 5.

The lower side 6c of the base end surface portion 21 is steeply inclined, and the lower side 6c of the tip end surface portion 22 extends parallel to the lower side 6c of the fourth side plate portion 5 from the tip of the lower side 6c of the base end surface portion 21.
That is, the joint portion 20 has a rectangular shape protruding laterally, which is small on the upper side 6b side and large on the lower side 6c side, and is cut out in a substantially trapezoidal shape. The lower notch 20k is formed so as to be larger than the notch 25k of the inner layer portion 2B of the first side plate portion 2.

With this configuration, the joint portion 20 is provided so as to be overlapped on the inner surface (that is, the folded inner layer portion 2B) of the double-folded first side plate portion 2.
As shown in FIG. 4, the tip surface portion 22 is provided at a position that covers the entire slits S and S with a slight gap from the overhanging corner portion 35 when the tip surface portion 22 is overlapped with the first side plate portion 2.

As shown in FIG. 2, the one-touch bottom 13 shown in FIG. 1 includes first-fourth bottom plate flaps 25-28 connected to each lower side 6c of the first-fourth side plate portions 2-5. These plurality of bottom plate flaps 25-28 have a configuration in which the tubular body 6 shown in FIG. 1 rises with an operation of forming a three-dimensional shape and closes the opening 12.

The first bottom plate flap 25 is formed in a trapezoidal shape gradually dented in the protruding direction so that the upper base side becomes smaller than the lower base side when the lower side 6c is used as the lower base side.
The second bottom plate flap 26 has a substantially trapezoidal base portion 29 having the lower side 6c of the second side plate portion 3 as the lower base portion, and an interlocking structure that protrudes from the base portion 29 and is joined to the first bottom plate flap 25 so as to be interlockable with the base portion 29. It is provided with a joint portion 30.

The base portion 29 of the first bottom plate flap 25 has a lower side 6c, an outer inclined side 29b that rises sharply from one end thereof, an upper bottom side 29c extending substantially parallel to the lower bottom side from the tip of the outer inclined side 29b, and an upper bottom side 29c. It is surrounded by an inner inclined side 29d that is inclined in two stages at a gentle angle from the end to the lower side 6c. The inner inclined side 29d extends from the end of the upper bottom side 29c to the other end of the lower side 6c, the first inclined portion 29e, the horizontal portion 29f extending horizontally from the lower end of the first inclined portion 29e, and the horizontal portion 29f. It has a second inclined portion (29 g).

A notch 29k having a step is formed between the first inclined portion 29e and the horizontal portion 29f, and serves as an engaging portion with the notch 29k of the fourth bottom plate flap 28 described later.
The second inclined side 29g is a bending line when the interlocking joint portion 30 is projected and the interlocking joint portion 30 is overlapped with the outer surface of the base portion 29 (that is, the back surface of the surface of the base portion 29 visible in FIG. 1). It has become.
The interlocking joint portion 30 is formed so that it can be connected to a part of the first bottom plate flap 25 by overlapping and adhering at the time of box making.

The third bottom plate flap 27 is connected to the third side plate portion 4 at the lower side 6c. The third bottom plate flap 27 has substantially the same shape as the first bottom plate flap 25, and is formed to have a slightly larger protrusion dimension from the lower side 6c than the first bottom plate flap 25.
The fourth bottom plate flap 28 is connected to the fourth side plate portion 5 at the lower side 6c. The fourth bottom plate flap 28 is formed in the same manner as the second bottom plate flap 26, and can be adhered to a part of the third bottom plate flap 27 at the interlocking joint portion 30.

Next, a method of folding the blank sheet 1 into a state before box making will be described.
First, the first bottom plate flap 25 shown in FIG. 2 faces the inner surface 40 of the outer layer portion 2A of the first side plate portion 2, and the second bottom plate flap 26 faces the inner surface 41 of the second side plate portion 3, respectively. Bend at 6c. The third bottom plate flap 27 is bent at the inner surface 42 of the third side plate portion 4, and the fourth bottom plate flap 28 is bent at the lower side 6c so as to face the inner surface 43 of the fourth side plate portion 5.

In this state, the adhesive is applied to the outer surfaces of the first bottom plate flap 25 and the third bottom plate flap 27 (for example, the shaded portion on the back surface side in FIG. 2).
The interlocking joint portion 30 of the second bottom plate flap 26 and the fourth bottom plate flap 28 is bent at the second inclined side 29 g so as to overlap the outer surface of the base portion 29.

After that, the blank sheet 1 is bent at the side side 6a between the third side plate portion 4 and the fourth side plate portion 5, and the fourth side plate portion 5 is attached to the inner surface 41 of the second side plate portion 3 and the inner surface 42 of the third side plate portion 4. Stack. In this state, the adhesive is applied to the outer surface (that is, the back surface of the surface shown in FIG. 2) side of the P2 portion near the side side 6a of the joint portion 20. The first side plate portion 2 which has been made into two layers is overlapped on the outer surface of the joint portion 20 and bonded at the P2 portion near the side side 6a.

As a result, as shown in FIG. 4, the 1st to 4th side plate portions 2-5 are in a flatly folded state in which the tubular body 6 can be formed. Further, although not shown in FIG. 4, the first bottom plate flap 25, the second bottom plate flap 26, and the third bottom plate flap are in a state where the first to fourth bottom plate flaps 25-28 are folded inside the tubular body 6. The 27 and the fourth bottom plate flap 28 are in an interlocking state.
As shown in FIG. 4, the blank sheet 1 folded flat before box making is completed.

In order to turn the flatly folded blank sheet 1 before box making into a three-dimensional packaging box X, the side sides 6a and 6a which are the bent points of the folded blank sheet 1 shown in FIG. 4 are brought close to each other. In this way, the tubular body 6 is made three-dimensional. When the cylinder 6 is made three-dimensional, the first to fourth bottom plate flaps 25-28 rise up with this operation, and as shown in FIG. 5, the opening 12 on the lower side 6c side of the cylinder 6 is closed without a gap, and the second The engaging portions 29k and 29k of the bottom plate flap 26 and the fourth bottom plate flap 28 are engaged and fixed to each other.
As a result, as shown in FIGS. 1 and 5, the packaging box X has the opening 7 opened.

Articles are appropriately accommodated from the opening 7, the second top plate flap 9 is closed, the first top plate flap 8 and the third top plate flap 10 are closed, the fourth top plate flap 11 is closed, and the insertion piece 17 is closed. Is inserted into the insertion slit 16. When the second top plate flap 9 and the like are closed by such a procedure, when the handle 14 is raised, a part of the first top plate flap 8 other than the ends 14a and 14c is inside the first top plate flap 8 as shown in FIG. It can be pressed by the second top plate flap 9. With this configuration, it is possible to prevent the first top plate flap 8 from being pulled inside the cylinder 6 when the handle 14 is raised.
As a result, as shown in FIG. 6, the packaging box X is a rectangular parallelepiped and easy to stack in a state where the handle 14 is not raised.

When carrying the packaging box X by hand, insert a finger into the notches 14k and 14k and pull up the handle 14 formed so as to be vertically overlapped in the outer layer portion 2A and the inner layer portion 2B.
Then, as shown in FIG. 3, the ends 14a and 14c of the handle 14 on the first top plate flap 8 side are pulled into the inside of the packaging box X, and the overhanging corner portion 35 engages with the inner surface of the first side plate portion 2. It is located so that it can be stopped. Further, as shown in FIG. 7, the end portion 14a of the handle 14 hits the upper side (locking side) 6b of the tip end surface portion 22 of the joint portion 20 and cannot be pulled out any more.

On the other hand, as shown in FIG. 8, the end portions 14b and 14d formed on the first side plate portion 2 of the handle 14 have a stepped portion 36 formed on the outer layer portion 2A, and as shown in FIG. 2, the inner layer portion 2B side. The end portion 14b of the is formed so as to spread toward the tip. Therefore, as shown in FIG. 8, when the handle 14 is pulled out, the end portion 14d of the outer layer portion 2A, the handle portion 14T of the inner layer portion 2B, and the handle portion 14T of the outer layer portion 2A are both pulled out, but the end portion 14d. The lower end portion 14b of the above is engaged with the step portion 36 and is not pulled out. That is, the starting point of the trigger in the inner layer portion 2B and the outer layer portion 2A shifts in the extending direction of the handle 14. Further, a load is also applied to a portion where the handle 14 of the inner layer portion 2B engages with the step portion 36. Therefore, the position where the load of the article is applied is dispersed in the extending direction of the handle 14, the local load on the ends 14b and 14d of the handle 14 is reduced, and the handle 14 is in a state where it is difficult to break.
As a result, the handle 14 is raised, and the packaging box X is easy to carry by hand.

As described above, in the blank sheet 1 and the packaging box X of the present invention, the two slits S and S forming the handle 14 are not made from the first top plate flap 8 to the bottom plate flap 25 facing the first top plate flap 8. It is up to the position on the side plate portion 2. Therefore, the blank sheet 1 and the packaging box X have a smaller cut into the top plate flap than the conventional packaging box in which slits S and S are formed between both ends of the side plate portion, and the strength of the packaging box X is reduced. It has the effect of being able to form a handle 14 that is sufficiently raised while holding the handle 14.

Further, with this configuration, it is possible to avoid forming cuts in the first and second bottom plate flaps 25 and 26, and to form a packaging box X capable of forming a handle 14 by slits S and S while adopting a one-touch bottom 13. It has the effect of being feasible.
Further, since the drawer portion of the handle 14 can be made smaller than the conventional one, there is a possibility that dust or the like may infiltrate through the gap formed between the slits S and S when the handle 14 is pulled out and the packaging box X is carried. Has the effect of being able to reduce.

Further, in the blank sheet 1 and the packaging box X, the overhanging corner portion 35 on the first top plate flap 8 side of the handle 14 can be locked to the inner layer portion 2B of the first side plate portion 2. Therefore, in the blank sheet 1 and the packaging box X, the handle 14 is firmly fixed to the first side surface portion 2 even when the load of the contained object is large, and the load is excessively applied to the tips of the end portions 14a and 14c to break the blank sheet 1. It has the effect of being able to prevent.

Further, in the blank sheet 1 and the packaging box X, the load points are shifted between the outer layer portion 2A and the inner layer portion 2B at the ends 14c and 14d to disperse the places where the load is applied, and the handle 14 is broken due to the concentration of the load. It has the effect of being able to effectively prevent such things.

Further, the tip portions of the slits S and S forming the end portion 14c are formed so as not to interfere with the tip portions of the slits S and S forming the end portion 14d. Therefore, the blank sheet 1 and the packaging box X have the effect of preventing the slits S and S from interfering with each other and tearing the slit S due to friction or the like.

Further, in the blank sheet 1 and the packaging box X, since the upper side 6b of the tip surface portion 22 is located closer to the lower side 6c than the upper side 6b of the first side plate portion 2, the handle 14 is raised as shown in FIG. At this time, the end portion 14c can be pressed by the upper side 6b of the tip surface portion 22. Therefore, the blank sheet 1 and the packaging box X have the effect of being able to more reliably hold the handle 14 in a properly raised state.
Further, since the front end surface portion 22 of the blank sheet 1 and the packaging box X is formed so as to substantially cover the handle 14, dust can enter by blocking the opening formed when the handle 14 is raised. It has the effect of avoiding the appearance of the contents from the outside as much as possible.

Further, as shown in FIG. 2, notches 25k and 20k are formed in the inner layer portion 2B and the joint portion 20 of the first side plate portion 2. Therefore, it is possible to prevent the first bottom plate flap 25 folded to the first side plate portion 2 side from interfering with the inner layer portion 2B and the joint portion 20 in the folded state before the box making of the blank sheet 1 shown in FIG. can. Therefore, when the blank sheet 1 is in the folded state before box making as shown in FIG. 4, it is prevented that the thickness of the blank sheet 1 becomes uneven, and when a plurality of blank sheets 1 before box making are laminated. It has the effect of suppressing the occurrence of imbalance.

In the above embodiment, the most preferable embodiment of the blank sheet 1 and the packaging box X of the present invention is shown, but it is preferable that the handle 14 has an overhanging corner 35, but it is not essential. Further, it is preferable that the step portion 36 is present, but it is not essential. Further, it is preferable that the tip portion 22 of the joint portion 20 is also provided, but it is not essential.
Further, the procedure for bringing the unfolded blank sheet 1 shown in FIG. 2 into the folded state before box making shown in FIG. 4 does not have to be the method shown in the above embodiment.

Even when the present invention is applied to the blank sheet 1 and the packaging box X which are not the one-touch bottom 13, the handles 14 are more likely to be raised than before while the formation of the slits S and S is made as small as possible, and the opening by the handles 14 is made small. It can have the effect of being able to.

1 Blank sheet 2 First side plate part 2A Outer layer part 2B Inner layer part 6 Cylindrical body 6a Side side (locking side)
6c Upper side (one of the two sides)
6d Lower side (the other of the two sides)
7 Opening 8 1st top plate flap 9 2nd top plate flap 10 3rd top plate flap 11 4th top plate flap 12 Opening 13 One-touch bottom 14a 1st top plate flap side end 14b 1st side plate side end Part 14c 1st top plate flap side end 14d 1st side plate side end 20 Joint 21 Base end face 22 Tip face 25 1st bottom plate flap 26 2nd bottom plate flap 27 3rd bottom plate flap 28 4th bottom plate flap S Slit X packaging box

Claims (7)

It is provided with a cylinder formed by assembling a plurality of side plate portions, a top plate flap that closes one opening of the cylinder, and a bottom plate flap that closes the other opening of the cylinder.
From the first top plate flap connected to the first side plate portion constituting one of the plurality of side plate portions to the intermediate portion between the two opposite sides of the first side plate portion and extending from the first side plate portion. Two extending slits are formed,
The two slits extend in a direction that spreads from each other along a bending line between the first top plate flap and the first side plate portion, and the space between the two slits is wide in the first top plate flap. It extends only in the direction in which it is formed to form an overhanging corner between the two slits.
The two slits extending continuously from the bending line to the first side plate portion are formed at a right angle to the bending line at least in a part including the end portion on the bending line side . Blank sheet. The bottom plate flaps overlap when folded flat, and adjacent bottom plate flaps are connected to each other. The blank sheet for a portable packaging box according to claim 1, which is a one-touch bottom that closes an opening of a body. The first side plate portion is folded to form two layers, an outer layer portion and an inner layer portion.
The two slits penetrate the outer layer portion and the inner layer portion, and penetrate the outer layer portion and the inner layer portion.
The blank of the carrying packaging box according to claim 1 or 2 , wherein the end portion formed on the first side plate portion side of the two slits is formed so that the outer layer portion is narrower than the inner layer portion. Sheet. The ends of the two slits formed in the inner layer portion sandwich the ends of the two slits formed in the outer layer portion in between, and gradually expand each other toward the tip. The blank sheet of the carrying packaging box according to claim 3.
At the time of box making, a joint portion is formed on the side plate portion adjacent to the first side plate portion.
The joint portion is continuous with a base end surface portion that joins between the first side plate portion and the side plate portion adjacent to the first side plate portion, and the two slits are formed in the first side plate portion. The blank sheet of a portable packaging box according to any one of claims 1 to 4 , which has a front end surface portion covering from the inner surface of the container. The blank sheet for a portable packaging box according to claim 5 , wherein the tip surface portion has a locking side orthogonal to the two slits on the flap side of the first top plate when stacked on the first side plate portion. .. A portable packaging box formed by using the blank sheet according to any one of claims 1 to 6 .

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