Blank sheets and boxes before box making

Abstract

The present invention provides a sheet for assembling a packaging box that can properly hold products of a certain height and volume, and is easy to assemble, as well as a blank sheet on which such a sheet can be formed. [Solution] The blank sheet 1a of the present invention, which can form a box before box making, has a first wall portion, a second side plate portion 5 extending from a back plate 2 that can rise from the first wall portion, and a top plate portion 7 connected to the upper edge 2a of the back plate 2. A retaining plate 8 is connected to the leading edge 7a of the top plate portion 7, and a fixing plate 9 is connected to the leading edge 8a of the retaining plate 8. The back plate 2 can form an opening 11 into which the fixing plate 9 can be inserted and pulled down, or the opening 11 is formed in advance.

Description

Technical Field

[0001] The present invention relates to a blank sheet and a box before case making.

Background Art

[0002] In a sales floor of goods or the like, a transparent resin cover member or film that covers a mount board or case for holding an article has been frequently used so that the article can be seen from outside the package while being held in a case containing the goods. However, from the perspective of environmental protection, products that do not use petroleum-based resins are required. Therefore, in recent years, packaging boxes made of paper materials that can hold and show the actual goods without using resin films have been developed.

Summary of the Invention

Problems to be Solved by the Invention

[0003] Conventional packaging boxes can actively show the so-called body of the goods while holding the goods, but it is necessary to insert a partition plate or the like different from the outer box after assembling the packaging box, the structure is complicated, and in particular, the holding of large goods is not sufficient in many cases. Therefore, the present invention provides an assembly sheet for a packaging box that can appropriately hold goods having a predetermined height and volume such as a liquid container like shampoo, and is easy to assemble, and a blank sheet that can form the same.

Means for Solving the Problems

[0004] The blank sheet of the present invention has a first wall portion, a second wall portion opposed to the first wall portion, a back plate portion continuously provided between the first wall portion and the second wall portion, and a first side plate portion and a second side plate portion that surround the contained object from at least three sides during case making together with the back plate portion. A holding plate is continuously provided at the leading edge of the second wall portion, a fixing plate is continuously provided at the leading edge of the holding plate, and an opening into which the fixing plate can be inserted and pulled downward can be formed on the back plate portion or the opening is formed in advance. With this configuration, a retaining plate that holds the upper part of the items to be stored can be easily formed on the second wall side.

[0005] The fixing plate of the blank sheet of the present invention may be fixed to the inner surface of an opening-forming plate that is detachably formed within the opening. This configuration results in a more compact blank sheet. Furthermore, its extremely simple design reduces the number of box-making steps required by the user.

[0006] The opening-forming plate or the fixing plate of the blank sheet of the present invention has a locking portion, and the back plate has a locking portion for which the locking portion is locked, and the second wall portion and the holding plate can be fixed in an assembled state. This configuration makes box manufacturing easier.

[0007] A detachable release portion may be formed below the locking portion of the blank sheet of the present invention. This configuration makes it easy to remove items from the packaging box.

[0008] The holding plate of the blank sheet of the present invention may have holding holes, notches, and / or slits formed therein for the upper part of the contents to pass through. This configuration allows for proper support of the top of the items being stored, depending on the type of item.

[0009] In the blank sheet of the present invention, a front panel is provided between the first side panel and the second side panel, rising from the first wall, and the front panel is provided at a height that does not reach the second wall, and the top of the front panel may be open. This configuration allows you to display a larger portion of the items you want to showcase.

[0010] In the blank sheet of the present invention, a front plate is provided between the first side plate portion and the second side plate portion, rising from the first wall portion, and a slit is formed at a predetermined height rising from the first wall portion, extending continuously from the middle portion in the width direction of the first side plate portion through the front plate to the middle portion in the width direction of the second side plate portion. The portion above the slit may be folded towards the back panel to serve as a buffer for the contents. This configuration allows for more stable storage of the items being held.

[0011] The blank sheet of the present invention can be used to form any of the above-mentioned pre-box manufacturing boxes. [Effects of the Invention]

[0012] This invention has the advantage of being able to properly hold products having a predetermined height and volume, such as shampoo bottles, and is very easy to assemble. [Brief explanation of the drawing]

[0013] [Figure 1] This figure shows a blank sheet, viewed from the inside, that can be used to form a box before box manufacturing according to the first embodiment of the present invention. [Figure 2] This is a magnified view of the back panel of a blank sheet according to the first embodiment of the present invention, shown from the inside. [Figure 3] This figure shows the process of creating a box before box manufacturing according to the first embodiment of the present invention. [Figure 4] This figure shows the process of creating a box before box manufacturing according to the first embodiment of the present invention. [Figure 5] This is a rear view showing a box before box manufacturing according to the first embodiment of the present invention. [Figure 6] This is a front view showing a box before box manufacturing according to the first embodiment of the present invention. [Figure 7] This is a perspective view showing the assembly process of a box before box manufacturing according to the first embodiment of the present invention. [Figure 8]It is a perspective view showing the assembly process of the pre-box for manufacturing a box according to the first embodiment of the present invention. [Figure 9] It is a perspective view showing the assembly process of the pre-box for manufacturing a box according to the first embodiment of the present invention. [Figure 10] It is a perspective view showing the assembly process of the pre-box for manufacturing a box according to the first embodiment of the present invention. [Figure 11] It is a perspective view showing a packaging box assembled with the pre-box for manufacturing a box according to the first embodiment of the present invention. [Figure 12] It is a perspective view showing the process of releasing the locking of a packaging box assembled with the pre-box for manufacturing a box according to the first embodiment of the present invention. [Figure 13] It is a plan view showing the blank sheet according to the second embodiment of the present invention from the inner surface. [Figure 14] It is a view showing the assembly process of the blank sheet according to the second embodiment of the present invention. [Figure 15] It is a view showing the assembly process of the blank sheet according to the second embodiment of the present invention. [Figure 16] It is a view showing the assembly process of the blank sheet according to the second embodiment of the present invention. [Figure 17] It is a view showing the assembly process of the blank sheet according to the second embodiment of the present invention. [Figure 18] It is a plan view showing another example of a blank sheet that can form the pre-box for manufacturing a box according to the first embodiment of the present invention.

Embodiments for Carrying Out the Invention

[0014] Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the dimensions of each part of the drawings used in the following description are not necessarily the same as the actual ones and can be changed as appropriate.

[0015] In the present embodiment, the up and down indicate the positional relationship when viewing the second wall portion 7 upward and the first wall portion 6 (see FIG. 7) downward, and the left and right indicate the horizontal positional relationship when viewing the object to be explained from the front. As shown in Figure 1, the blank sheet 1a of the present invention mainly comprises a back plate 2, a first side plate portion 3, a front plate 4 and a second side plate portion 5, first to fourth bottom plate flaps 6A-6D that form the bottom plate portion (first wall portion) 6 shown in Figure 8, a top plate portion (second wall portion) 7, a retaining plate 8 and a fixing plate 9.

[0016] The back panel 2, the first side panel section 3, the front panel 4, and the second side panel section 5 are connected in one direction and form a surrounding wall that encloses the product. In this embodiment, the back panel 2 is formed in a rectangular shape having the height between the top panel 7 and the bottom panel 6 (see Figure 7) when the box is assembled, and the width when viewed from the front. The front panel 4 is the panel opposite the back panel 2, and is the part that holds and displays the contents placed inside the box during the box-making process.

[0017] The first side panel section 3 is connected between the rear panel 2 and the front panel 4. The second side panel section 5 is connected to the front panel 4. The back panel 2, the first side panel 3, the front panel 4, and the second side panel 5 are connected in the order described above, starting from the right side when viewed from the inner surface of the blank sheet 1a during box construction, via the side edges b2-b4.

[0018] Near the upper edge 2a of the back panel 2, an opening 11 is formed, which is partially closed by an opening-forming plate 10 that can be detached. As shown in Figure 2, the opening 11 is surrounded by side edges 11b, 11b which are substantially parallel to each other, an upper edge 11a which horizontally connects the upper ends of both side edges 11b, and a lower edge 11c which extends slightly towards the center from the lower ends of both side edges 11b, 11b and then bulges downward.

[0019] The inwardly protruding shoulder portion formed between the side edge 11b and the lower edge 11c serves as an engaging portion 11d to prevent further downward movement of the fixing plate 9 during box construction.

[0020] The opening-forming plate 10 is formed in a roughly Y shape, having roughly V-shaped portions 10v that protrude diagonally upward to the left and right, and roughly arrow-shaped portions 10t that extend downward from the center of the roughly V-shaped portions 10v.

[0021] The upper edge 10a and side edges 10b,10b of the roughly V-shaped portion 10v of the opening-forming plate 10 are in contact with the upper edge 11a and both side edges 11b,11b of the opening 11. The upper edge 10a of the opening-forming plate 10 is cut out in an arc shape approximately in the center, forming a finger rest portion 12A.

[0022] The opening-forming plate 10 is connected to the back plate 2 via perforations along its upper edge 10a and side edge 10b, except for the finger rest portion 12A. The roughly V-shaped section 10v bends at the lower ends of both sides 10b, 10b, slopes away from the edge of the opening 11, and connects to the roughly arrow-shaped section 10t.

[0023] The roughly arrow-shaped section 10t extends downward from the center of the roughly V-shaped section 10v, and then protrudes to the left and right while its tip edge is gently curved. The lower end portion of this roughly arrow-shaped section 10t, including the left and right protruding sections 15t, 15t, constitutes a locking section 15.

[0024] A gap of a predetermined width is formed between the lower part of the roughly V-shaped section 10v and the outer circumference of the roughly arrow-shaped section 10t and the edge of the opening 11, forming the lower opening 11s. The gap between the roughly arrow-shaped section 10t and the opening 11 is not strictly limited, but it should be large enough to allow for some ease of gripping with a finger.

[0025] The locking portion 16 is formed to match the dimensions required to move the fixing plate 9 downward below the opening 11 during box construction. In this embodiment, the locking portion 16 is formed approximately in the center of the back plate 2 in both the vertical and horizontal directions. The locking portion 16 is formed by an insertion hole 16h that is horizontally elongated and slightly arc-shaped upwards, excluding the left and right protruding portions 15t, to facilitate insertion of the center of the locking portion 15, and inclined slits 16s that extend horizontally while sloping downwards from both ends of the insertion hole 16h. Vertical slits 16j are also formed from both ends of the insertion hole 16h to further facilitate insertion of the locking portion 15.

[0026] The width between the tips of the two inclined slits 16s is formed to be approximately the same as, or slightly larger than, the width dimension of the locking portion 15 including the left and right protruding portions 15t. From the tips of the two inclined slits 16s, a locking release portion 17 is formed, surrounded by perforations 17b and horizontal slits 17c that extend downward to approximately the same length as the locking portion 15 and then extend towards the center, forming a roughly base shape.

[0027] Below the locking release portion 17, a roughly rectangular opening window 18 is formed via a horizontal slit 17c, having the same width as the horizontal slit 17c and a predetermined vertical dimension. The opening window 18 is sized to allow a person's fingertip to be inserted. The lower edge 18c of the opening window 18, which is parallel to the horizontal slit 17c, has a crease line to facilitate folding.

[0028] As shown in Figure 1, the first side panel 3 is attached to one side b2 of the back panel 2. A joining allowance 19 is formed on the other side edge b1 of the back plate 2, which is parallel to one side edge b2, for connecting with the second side plate portion 5.

[0029] The first side plate portion 3 is formed in a roughly trapezoidal shape, with side b2 as the lower base and side b3 between it and the front plate 4 as the upper base. More specifically, the first side plate portion 3 is formed by being surrounded by side b2, b3, a horizontally extending and laterally inclined upper side 3a, and a lower side 3c.

[0030] The upper edge 3a of the first side panel 3 extends along the extension of the upper edge 2a of the back panel 2, then curves downwards in an arc, and then extends in a straight line at an incline. Sides b2 and b3 extend parallel to each other, perpendicular to the bottom edge 3c.

[0031] A fold line L1 is formed from the intersection point p between the end of the arc shape of the upper edge 3a and the inclined edge, extending to a position spaced apart from the lower edge 3c. The fold line L1 extends perpendicularly to the lower edge 3c. The second side panel 5 is formed symmetrically with the first side panel 3, with the front panel 4 in between.

[0032] The front panel 4 is formed by its side edges b3 and b4, which extend inclined along the extensions of the inclined edges of the first side panel section 3 and the second side panel section 5, respectively, then extending horizontally toward the center in the left-right direction, and further enclosed by a rectangular cutout upper edge 4a and a lower edge 4c which extends along the extension of the lower edge 3c. The side edges b4 extend perpendicular to the lower edge 4c and parallel to each other.

[0033] The first side panel 3, the front panel 4, and the second side panel 5 have slits 25 that extend in a generally horizontal direction from the lower end of the fold line L1 of the first side panel 3 to the lower end of the fold line L1 of the second side panel 5. The slit 25 is formed to extend horizontally from the lower end of the fold line L1, then curve upwards in an arc beyond the center of the width direction of the front panel 4, and then extend horizontally again in a curve just before the side edge b4, connecting to the lower end of the fold line L1 of the second side panel 5.

[0034] The front panel 4 has multiple fold lines L2 that extend parallel to each other at intervals in the width direction (i.e., the direction between the side edges b3 and b4). The fold lines L2 are formed up to a position that reaches the slit 25 and can be folded in a mountain fold or valley fold as appropriate depending on the number and shape of the articles to be stored.

[0035] With this configuration, when the blank sheet 1a is manufactured into a box, the upper edges 3a-5a formed across the first side panel 3, the front panel 4, and the second side panel 5, and the space between them and the slit 25 can be pushed towards the back panel 2 to form a cushioning plate 26 for the contents.

[0036] The slit 25 is provided with an easily separable joint, although it is not essential, to prevent the cushioning plate 26 from unintentionally lifting up during the manufacturing of the blank sheet 1a or the box before boxing.

[0037] The top panel 7 is formed in a roughly rectangular shape with the same width dimension as the upper edge 2a of the back panel 2, and is connected to the back panel 2 at the upper edge 2a. The depth edge 7b of the top panel 7, which forms the depth dimension during box manufacturing, is formed to be approximately the same dimension as the lower edges 3c and 5c of the first side panel 3 and the second side panel 5. A retaining plate 8 is attached to the leading edge 7a of the top plate portion 7, which is parallel to the upper edge 2a of the back plate 2.

[0038] The retaining plate 8 is formed with a width slightly smaller than the width dimension (i.e., the upper side 2a) of the top plate portion 7, and a depth longer than the depth side 7b of the top plate portion 7. More specifically, the retaining plate 8 is formed by being surrounded by a front edge 7a, a depth edge 8b that extends along the extension of the depth edge 7b, a front edge 8a that extends slightly upward at an angle, then horizontally, and then inclined downward at an angle, and a depth edge 8d that extends parallel to the depth edge 8b and is then cut out in a predetermined shape.

[0039] The notch 8k is formed in a shape in which a roughly trapezoidal flap portion 8F is attached to a roughly rectangular bent side 8e. The retaining plate 8 has a first retaining hole 28 formed adjacent to the notch 8k in the width direction.

[0040] A rectangular fixing plate 9, sized to fit within the surface of the roughly V-shaped portion 10v of the opening-forming plate 10 shown in Figure 2, is attached to the leading edge 8a of the retaining plate 8. A circular finger rest portion 12B is formed between the fixing plate 9 and the holding plate 8, so as to substantially overlap the tip edge 8a. The semicircle cut out on the holding plate 8 side of the finger rest portion 12B substantially coincides with the finger rest portion 12A of the opening forming plate 10.

[0041] The bottom plate section 6 shown in Figure 7 is composed of a so-called one-touch bottom, which is assembled automatically by multiple bottom plate flaps 6A-6D working in conjunction with each other during box manufacturing. As shown in Figure 1, the first bottom plate flap 6A includes a base portion 30 and an interlocking joint portion 31 that protrudes from the base portion 30 and is joined to the second bottom plate flap 6B, enabling it to move in conjunction with it.

[0042] The base portion 30 is surrounded by a lower edge 2c, a sloping edge 30b that rises steeply from one end of the lower edge 2c, an upper edge 30a that extends approximately parallel to the lower edge 2c, a sloping edge 30c that extends from the end of the upper edge 30a, a line 30d that extends horizontally, and another sloping edge 30e that slopes gently again.

[0043] The inclined edge 30e causes the interlocking joint portion 31 to protrude towards the second bottom plate flap 6B side, and also serves as a folding line when the interlocking joint portion 31 is superimposed on the outer surface of the base portion 30. The interlocking joint 31 is formed so that it can overlap with a part of the second bottom plate flap 6B during box construction and be connected by adhesive.

[0044] The second bottom plate flap 6B is formed in a roughly trapezoidal shape and is connected to the first side plate portion 3 at its lower edge 3c. The second bottom plate flap 6B has a shape that gradually tapers from the lower edge 3c towards the leading edge. The third bottom plate flap 6C has the same shape as the first bottom plate flap 6A and is connected to the front plate 4 at its lower edge 4c. The fourth bottom plate flap 6D has the same shape as the second bottom plate flap 6B and is connected to the second side plate portion 5 at its lower edge 5c.

[0045] The blank sheet 1a having the above configuration is preferably formed from a sheet material such as stiff paper or cardboard. Depending on the stiffness or thickness of the paper material, a cut or half-cut may be provided at the folding line to facilitate folding.

[0046] The blank sheet 1a is assembled into the pre-box 1 as follows.

[0047] First, adhesive is applied to the inner surface of the fixing plate 9, and as shown in Figure 3, the retaining plate 8 is folded back towards the inner surface of the top plate portion 7 at the leading edge 7a of the top plate portion 7. This causes the leading edge 8a of the retaining plate 8 to almost overlap with the upper edge 11a of the opening 11, and the retaining plate 8 to overlap above the opening 11 of the top plate portion 7 and the back plate 2. Furthermore, the fixing plate 9 is attached to the opening forming plate 10, overlapping the roughly V-shaped portion 10v shown in Figure 2, with its outer edge almost aligned with the upper edge 10a and side edge 10b (or slightly positioned inward along the upper edge 10a and side edge 10b).

[0048] The first to fourth bottom plate flaps 6A to 6D are folded along the lower edges 2c-5c. The interlocking joints 31 of the first bottom plate flap 6A and the third bottom plate flap 6C are folded onto the outer surface of the base portion 30 at the inclined edge 30e, and adhesive is applied.

[0049] Next, at the side b2, the back panel 2 is folded back onto the first side panel 3 and the front panel 4, together with the top panel 7 and the first bottom panel flap 6A shown in Figure 3, as shown in Figure 4. As a result, the second bottom panel flap 6B overlaps and adheres to the interlocking joint 31 of the first bottom panel flap 6A shown in Figure 3.

[0050] Adhesive or the like is also applied to the outer surface of the joining area 19, and as shown in Figure 5, the second side plate portion 5 is folded back onto the front plate 4 and the joining area 19 by bending it along the side edge b4. As a result, the fourth bottom plate flap 6D overlaps and adheres to the interlocking joint 31 of the third bottom plate flap 6C. Also, the side edge b5 of the second side plate portion 5 overlaps with the side edge b1 of the back plate 2, and the overlapping portion of the second side plate portion 5 and the joint allowance 19 adheres together, so that the second side plate portion 5 is connected to the back plate 2 so as to surround the bottom plate portion 6. As described above, the blank sheet 1a allows for the extremely easy creation of the pre-box 1 of the present invention.

[0051] Next, we will explain how to use box 1 before box making. As shown in Figure 6, the pre-box-making box 1 is assembled by folding the side edges b3 and diagonal side edges b1, and raising the first side panels 3 and second side panels 5 at right angles to the back panel 2. This causes the first bottom panel flap 6A to the fourth bottom panel flap 6B to be assembled in conjunction, forming the bottom panel section 6 as shown in Figure 7, and resulting in a nearly box-like shape.

[0052] Next, as shown in Figure 8, the cushioning plate 26 is pushed towards the back plate 2 while cutting the joints of the slit 25 formed across the first side plate 3, the front plate 4, and the second side plate 5. The multiple fold lines L2 of the cushioning plate 26 are folded into mountain folds or valley folds as appropriate depending on the items to be stored. For example, when storing two items of the same size side by side, the fold line located between the items is made into a mountain fold to make it easier to hold each item.

[0053] The bottom plate portion 6 and the first side plate portion 3, front plate 4, and second side plate portion 5, excluding the portion forming the buffer plate 26, constitute a tray portion 40 that surrounds and accommodates the item when the buffer plate 26 is pressed in. In this state, the item is placed inside the tray portion 40.

[0054] With the tray portion 40 formed (or before), as shown in Figure 9, place your fingers on the finger rest portion 12A or locking portion 15 of the opening forming plate 10 from the outer side of the back plate 2, break the perforations on the outer edge of the opening forming plate 10, and fold the opening forming plate 10 and the fixing plate 9 attached thereto to the outside of the opening 11 of the back plate 2 at the upper edge 11a of the opening 11.

[0055] As shown in Figure 10, with the opening forming plate 10 and the fixing plate 9 attached thereto almost completely extended from the opening 11, the opening forming plate 10 is pulled down until its upper edge 10a touches the engaging portion 11d shown in Figure 2, and the top plate portion 7 is folded at the upper edge 2a of the back plate 2 so that it covers the article. As a result, the protruding dimension d1 of the retaining plate 8 (dimension from tip edge 7a to tip edge 8a) is longer than the depth side 7b of the top plate portion 7, so the retaining plate 8 is tilted toward the height position of the engaging portion 11d of the opening 11, and the top of the article is inserted into the notch 8k and the first retaining hole 28.

[0056] Gently lift the opening-forming plate 10 and the fixing plate 9 upwards and align them with the outer surface of the back plate 2, and as shown in Figure 11, insert the locking portion 15 of the opening-forming plate 10 into the locking portion 16. As shown in Figure 1 or Figure 9, the locking portion 16 has a horizontally elongated hole so that the inside of the protruding portion 15t of the locking portion 15 can be easily inserted, and downward inclined slits 16s and vertical slits 16j are also formed at both ends of its width, making it easy to push in the tip of the locking portion 15.

[0057] Once the tip of the locking portion 15 is inserted into the hole of the locked portion 16, the locking portion 15 is then firmly pushed in to insert the protruding portion 15t of the locking portion 15 into the lateral slit 25 of the locked portion 16. Since the lower plate portion of the locked portion 16 is designed not to bend outward easily, the stress of the paper material presses the locking portion 15 against the inside of the back plate 2, securely locking it to the locked portion 16.

[0058] As a result, the goods can be placed and secured within the packaging box X with great ease. The packaging box X1 containing the goods can be easily and stably carried by using the opening 11 as a handle and holding it by placing fingers on the upper edge 11a.

[0059] To remove an item from the packaging box X1, it can be easily done by releasing the locking portion 15 of the opening-forming plate 10 from the locking portion 16. In this embodiment, the locking can be easily released by opening the opening window 18 formed below the locking portion 16 and pulling up the locking release portion 17 to separate it from the back plate 2, as shown in Figure 12.

[0060] Once the locking portion 15 is released, the opening-forming plate 10 to which the fixing plate 9 is attached can be easily pulled up into the opening 11, allowing the top plate portion 7 covering the item to be raised, the cover over the item to be removed, and the item to be taken out of the packaging box X1.

[0061] The box 1 of the present invention has the effect of allowing the body of the product to be clearly visible from the front and sides, even when the product is a bottle of shampoo, detergent, or other product of a predetermined height or volume, while also being able to properly hold the product at the top, middle, and bottom.

[0062] In particular, the pre-box-making box 1 offers a very advantageous effect: it allows for box-making and storage of items in three extremely simple steps: [1] making the pre-box-making box 1 three-dimensional (assembly process), [2] placing items into the tray section (storage process), and [3] separating and lowering the opening-forming plate 10 (holding section formation process).

[0063] Furthermore, the retaining portion forming step [3] has the very advantageous effect of being completed in a simple and smooth series of actions, which involves easily separating the opening forming plate 10 to which the fixing plate 9 is attached with just a fingertip, pulling it out and pulling it down, and inserting the locking portion 15 into the locking portion 16.

[0064] Furthermore, looking at the back panel 2 of the box 1 before assembly, it is immediately apparent that the opening-forming plate 10 is intended to be separated by perforations, that the opening-forming plate 10 can be moved within the opening 11, and that there is a hole for the locking portion 16 at the end of the opening-forming plate 10 when it is pulled down. Therefore, the operation of [3] is user-friendly and extremely easy to assemble, as the operation is easily suggested and guided by the configuration, allowing the user to understand what to do with only a very simple explanation.

[0065] The box 1 before box-making is configured to hold at least the upper and lower parts of the items placed inside during box-making. Furthermore, the locking structure of the locking part 15 and the locked part 16 is robust, and once the locking part 15 is secured to the locked part 16, it is difficult to easily pull out the locking part 15. Therefore, even if the front part 4 and the first and second side parts 3 and 5 on both sides thereof are opened wide, and the body of the product placed in the packaging box is exposed without a cover such as film, it is possible to prevent the product from being easily removed from the packaging box X1 without tearing or damaging any part of the packaging box X1.

[0066] Below the opening 11, an engaging portion 11d is formed to prevent further pulling down of the opening forming plate 10 and the fixing plate 9. Therefore, the box 1 before construction has the effect of allowing the user to easily and appropriately form the holding portion with the holding plate 8 without requiring any special thought.

[0067] The box 1 before packaging can have its opening 11, which is provided for forming a holding section, used as a handle. Therefore, the box 1 before packaging and the packaging box X1 have the advantageous effect of allowing the contents to be carried stably and easily without having to provide a separate handle.

[0068] Since the box 1 before packaging has a cushioning plate 26, it has the effect of being able to hold the contents more stably.

[0069] The box 1 before box-making has a detachable locking release section 17 below the locking section 16. Therefore, the box 1 before box-making has the effect of easily releasing the locking of the locking section 15, which was firmly fastened during box-making, by easily separating the locking release section 17.

[0070] Before boxing, the box 1 has the effect of making the upper edges 2a to 4a of the first side panel 3, front panel 4, and second side panel 5 roughly V-shaped as a whole, while maintaining as much surface area as possible for holding the item from the side, and making it easy to push the item towards the back panel 2.

[0071] Next, a second embodiment of the present invention will be described with reference to Figures 13 to 17. In describing the second embodiment, the same configuration as the first embodiment will be omitted from the description, and the configuration that differs from the first embodiment will be described in particular.

[0072] The blank sheet 51a of this embodiment shown in Figure 13 is a sheet of the type that is directly assembled into the packaging box X2 (see Figure 16, the same applies hereafter). As shown in Figure 16, the packaging box X2 is configured to be used with the opening K facing upwards, with the back panel 52 serving as the bottom panel and the front panel being omitted to create a large opening at the top. The first side panel 53 and the second side panel 55 connected to the back panel 52 are mainly formed from outer wall panels 53y, 55y and inner wall panels 53f, 55f, and the first wall panel 56 connected to the back panel 52 is configured to be assembled into a thin, hollow box shape with a predetermined thickness.

[0073] The blank sheet and packaging box of the second embodiment will be described in detail below. As shown in Figure 13, when the blank sheet 51a is viewed from the front with its inner surface facing forward, the inner wall plate 53f and outer wall plate 53y of the first side plate section 53, the back plate 52, and the outer wall plate 55y and inner wall plate 55f of the second side plate section 55 are connected from right to left via vertical lines v2-v7. In addition, the second wall section 57, the holding plate 58 and the fixing plate 59 are connected to one horizontal line s1 of the back plate 52. The other horizontal line s2, which is parallel to horizontal line s1, is connected to the outer wall plate 56y, the connecting plate 65 and the inner wall plate 56f that form the first wall section 56.

[0074] The opening 11 in the back panel 52 is pre-opened, without the need for a detachable opening-forming plate 10 as in the first embodiment. Furthermore, there is no locking release portion 17 below the locking portion 16 of the back panel 52. In addition, the back panel 52 has locking holes 60 formed along the vertical lines v4 and v5, into which engaging claws 45 formed on the vertical lines v2 and v7 are inserted and locked. Except for the points mentioned above, the back panel 52 is formed in substantially the same manner as the back panel 52 of the first embodiment.

[0075] The outer wall panel 53y of the first side panel 53 is a rectangle having vertical lines v4 and a side edge t1 perpendicular thereto, and is formed as a rectangle that can rise from the back panel 52 with the vertical lines v4 as the base edge. The side edge t1 is formed to a dimension that rises from the back panel 52 during box manufacturing to form the depth of the packaging box X2. The other vertical line v3 of the outer wall panel 53y, which is parallel to the vertical line v4, is formed in a double layer with a gap equal to the thickness of the first side panel 53. The double vertical line v3 is formed to be shorter than the vertical line v4.

[0076] An inner wall panel 53f is connected to the outer wall panel 53y of the first side panel section 53 via double vertical lines v3. The inner wall panel 53f is connected via a double vertical line v3 that is shortened by the same amount as the thickness of the second wall section 57 (height of the second wall section 57 during box manufacturing) when the side t1 on the extension of the horizontal line s2 is bent.

[0077] The inner wall panel 53f is formed in the shape of a rectangle with double vertical lines v3 and a side t2 having the same dimensions as side t1. The inner wall panel 53f has a folded piece 53e connected to it via a vertical ruled line v1.

[0078] The folded-over piece 53e is the part that is folded onto the inner surface of the back panel 52 during box manufacturing. It is formed in a roughly trapezoidal shape with the vertical crease v2 as the lower base and the leading edge v1, which is the upper base, being approximately 10 mm apart. The leading edge v1 is formed to be shorter than the vertical crease v2 and has a shape that tapers slightly towards the leading edge v1.

[0079] The second side panel 55 is connected to the vertical line v5 of the back panel 52, which is parallel to the vertical line v4. The second side panel 55 is provided symmetrically with the first side panel 53, with the back panel 52 in between.

[0080] The first wall section 56 is connected to the horizontal ruled line s2 of the back panel 52. The first wall portion 56 is configured to rise from the horizontal ruled line s2 of the back plate 52 as its base edge during box manufacturing, and to cover the other end (lower part in this embodiment) of the contents by closing the space between the first side plate portion 53, the back plate 52, and the second side plate portion 55. The outer wall panel 56y of the first wall section 56 is formed in the shape of a rectangle having a horizontal ruled line s2 and a side edge t3 perpendicular thereto.

[0081] Insert pieces 61, 61 are provided on both sides t3, t3 of the first wall portion 56, which are inserted between the outer wall plate 53y and the inner wall plate 53f of the first side plate portion 53, and between the outer wall plate 55y and the inner wall plate 55f of the second side plate portion 55, respectively, during box construction.

[0082] A connecting plate 65 is continuously installed along the horizontal ruled line s3 of the outer wall panel 56y of the first wall section 56, forming the thickness of the first wall section 56. The connecting plate 65 is formed in the shape of a rectangle with a horizontal line s3 as one side and a side t4 perpendicular to the horizontal line s3. The connecting plate 65 is further connected to the inner wall plate 56f of the first wall section 56 via horizontal lines s4.

[0083] The inner wall plate 56f of the first wall section 56 is formed in a rectangle with a width slightly narrower than that of the outer wall plate 56y, and the length of its side edge t5 is approximately the same as that of the side edge t3 of the outer wall plate 56y. Inside the inner wall plate 56f, there are roughly circular second retaining holes 66, 66. The second retaining holes 66, 66 are formed to allow insertion of the other end (the lower part in this embodiment) of the contents. A roughly rectangular buffer piece 67 protrudes from within the second retaining hole 66, connected to the horizontal ruled line s5 which is the leading edge of the inner wall plate 56f.

[0084] In this embodiment, as an example, two second retaining holes 66 are formed with a gap between them in the direction of the horizontal ruled line s5. A short, protruding flap 68 protrudes from the leading edge s5 of the inner wall panel 56f, which is folded over to the inner surface of the back panel 52 during box construction. Insert pieces 71, 71 are provided on both sides t5, t5 of the inner wall plate 56f, which are inserted between the outer wall plate 53y and the inner wall plate 53f of the first side plate section 53 and between the outer wall plate 55y and the inner wall plate 55f of the second side plate section 55, respectively, during box construction.

[0085] The second wall portion 57 is configured to rise from the horizontal ruled line s1 of the back plate 52 as its base edge during box manufacturing, and to close the space between the first side plate portion 53, the back plate 52, and the second side plate portion 55, thereby covering one end side (the top in this embodiment) of the contents.

[0086] The second wall portion 57 is formed as a rectangle having a horizontal line s1 and side edges t7 extending perpendicularly from both ends of the horizontal line s1. The side edge t7 has the same dimensions as the side edge t1 of the outer wall plate 53y of the first side plate portion 53. The retaining plate 58 is formed in a substantially rectangular shape with a width dimension slightly smaller than that of the first wall portion 56 (i.e., the dimension of the horizontal rule line s7) and a side edge t8 that is longer than that of the first wall portion 56. A fixing plate 59 is attached to the center of the leading edge s8 of the retaining plate 58. The fixing plate 59 is formed in the same shape as the opening forming plate 10 of the first embodiment, which has a locking portion 15.

[0087] The blank sheet 51a having the above configuration is assembled into the packaging box X2 as follows. First, the first wall portion 56 is bent along the horizontal lines s3 to s5 and the side edges t3 and t5 provided on the first wall portion 56 to make the connecting plate 65 parallel to the back plate 52, and then the inner wall plate 56f is bent so that it faces the inside of the outer wall plate 56y, thereby raising the first wall portion 56 relative to the back plate 52. Also, bend the insert pieces 61 and 71 along the vertical lines v4 and v5 on the back panel 52.

[0088] Then, the outer wall panels 53y and 55y of the first side panel section 53 and the second side panel section 55 are raised relative to the back panel 52 along the vertical lines v4 and v5, and the first side panel section 53 and the second side panel section 55 are further folded inward along the double vertical lines v3 and v6. When the inner wall panels 53f and 55f are brought to face the inside of the outer wall panels 53y and 55y by folding, the insertion pieces 61 and 71 are sandwiched between the inner wall panel 53f and the outer wall panel 53y, and between the inner wall panel 55f and the outer wall panel 55y.

[0089] Then, when the leading edges v2 and v7 of the inner wall panels 53f and 55f are firmly pressed in line with the vertical lines v4 and v5, the folded-over pieces 53e are superimposed on the inner surface of the back panel 52 at the leading edges v2 and v7, and the claws 45 formed on the leading edges v2 and v7 are inserted into the locking holes 60. This fixes the first side panel portion 53 and the second side panel portion 55 so that they cannot be easily released from their raised position relative to the back panel 52.

[0090] As a result, as shown in Figure 14, a predetermined thickness is formed between the outer wall panels 53y, 55y and the inner wall panels 53f, 55f, and the first wall portion 56 into which the lower part of the contents can be inserted through the second holding holes 66, 66, and the first side plate portion 53 and the second side plate portion 55 are assembled. At the same time, the first side plate portion 53 and the second side plate portion 55 and the first wall portion 56 are firmly fixed together.

[0091] Next, the retaining plate 58 is folded along the horizontal ruled line s7 towards the inner surface of the second wall portion 57, and the lower part of the contents 100, such as a bottle, is inserted into the second retaining holes 66, 66 as shown in Figure 15. When the second wall portion 57 is bent, as shown in Figure 1, the side edge t8 of the retaining plate 58 is longer than the side edge t7 of the second wall portion 57. As a result, as shown in Figure 16, the retaining plate 58 inclines downward toward the back plate 52, and the heads of the contents 100 are inserted into the first retaining holes 28, 28.

[0092] Therefore, in the same manner as the pre-box-making box 1 of the first embodiment, as shown in Figure 17, the fixing plate 59 having the locking portion 15 shown in Figure 14 is pulled out from the opening 11 to the outside of the back plate 52 and pulled down in the direction of the locking portion side 16, and the locking portion 15 is inserted into the locking portion 16 and fixed in place. With the above assembly steps, the contents are placed into packaging box X2, and the assembly of packaging box X2 is completed.

[0093] Thus, the blank sheet 51a of the second embodiment has the effect of enabling the assembly of a packaging box X2 in a very simple and easy manner while containing the contents.

[0094] In particular, the blank sheet 51a of this embodiment also has the effect of making it extremely easy to assemble a structure that supports the top of the contents simply by pulling out the fixing plate 59 connected to the retaining plate 58 from the opening 11 and pulling it down toward the locking portion 16 in the same flow.

[0095] Although the blank sheet 51a does not have the same configuration as the blank sheet 1a, in which the fixing plate 59 is attached to the opening forming plate 10, the fixing plate 59 has the same configuration as the opening forming plate 10, and therefore it produces the same action, function, and effect as the blank sheet 1a.

[0096] As shown in the blank sheet 51a and packaging box X2 of the second embodiment, the present invention can also be applied to packaging boxes other than the first embodiment X1, in which the bottom plate portion 6 is assembled by raising the first side plate portion 3 and the second side plate portion 5. In other words, the present invention can be applied to any packaging box that can be opened on one side to expose the contents, support one end (typically the top) of the contents with a retaining plate 58, and employ a configuration in which a fixing plate 59 or an opening forming plate 10 is pulled out from the opening 11 of the back plate 2 and secured.

[0097] In the first embodiment, the tip of the arrow-shaped portion 10t of the opening-forming plate 10 was used as the locking portion 15, and a roughly rectangular, elongated hole was used as the locked portion 16. However, other shapes can be used for the locking portion 15 and the locked portion 16, as long as they can be securely locked into the locked portion 16.

[0098] Specifically, for example, as shown in Figure 18, the opening-forming plate 10 may be roughly rectangular with a gently curved lower edge, and protrusions for locking the opening-forming plate 10 may be formed on both sides of the opening 11 below the opening-forming plate 10 to form a locking portion 16. In this case, the straight side edges 10b of the opening-forming plate 10 (especially the portion near the upper edge) become the locking portion 15.

[0099] In addition to the locking portion 16 formed by the projection, a retaining hole 16w that curves upward may be formed below the opening 11 to secure the tip of the opening-forming plate 10. This retaining hole 16w is not essential. A finger rest portion 12A formed by a notch in the opening-forming plate 10 is also desirable but not essential. Such modifications can also be applied to the blank sheet 53a of the second embodiment.

[0100] Alternatively, as shown in Figure 13, etc., in the second embodiment, the opening 11 may be formed as a simple, roughly rectangular shape with a finger-grip notch in the lower center.

[0101] The slit 25 formed across the first side panel, front panel 4, and second side panel 5 in the first embodiment has a portion that is partially curved upward in an arc shape for pop-up display. However, the slit 25 does not have to have an arc shape, may have multiple arc shapes, or may have any other desired shape suitable for pop-up displays.

[0102] The height from the lower edge 3c to 5c of the slit 25 can be set as appropriate, as long as it properly holds the lower part of the item. The upper edges 3a to 5a, which are formed in a roughly V-shape across the first side plate portion 3, the front plate 4, and the second side plate portion 5, can be formed in other shapes as long as they can hold the article from the back as a buffer plate 26 and can be easily pushed in and bent.

[0103] The retaining plate 8 may have multiple first retaining holes 28 instead of the notches 8k, or, as shown in Figure 18, may have slits 29 instead of the notches 8k or the first retaining holes 28, or may have a combination of these, and can be appropriately set according to the number of articles to be stored and the shape of the top of the articles.

[0104] In the present invention, instead of the configuration of the locking portion 15 and the locked portion 16, double-sided tape or the like can be used to fasten the outer surface of the back plate 2 and the fixing plate 9 and / or the opening forming plate 10. Furthermore, while it is highly preferable, the locking / separating portion 17 is provided on the back plate 2, it is not essential.

[0105] The opening-forming plate 10 is very suitable for creating and assembling the box 1 before box making because it fixes the fixing plate 9 and can be moved by separation during box making. However, as illustrated in the second embodiment, a configuration without using the opening-forming plate 10 is also possible. That is, the box 1 and blank sheet 1a before box making may have the opening 11 completely opened in advance, and the locking part 15 described above may be provided at the tip of the fixing plate 9.

[0106] In this case, before box-making, the retaining plate 8 and fixing plate 9 are free ends, so the retaining plate 8 can be folded back at the top edge 7a, the fixing plate 9 can be brought out through the opening 11 and pulled down, and the box can be made. Alternatively, as shown in Figure 1, the opening-forming plate 10 may be provided, while the locking portion 15 may be formed on the fixing plate 9 instead of the opening-forming plate 10. [Explanation of symbols]

[0107] 1 Box before packaging 1a, 51a Blank Sheet 2 Back plate 3 1st side plate 4 Front plate 5 Second side plate 6,56 1st wall 7,57 Second wall 8,58 Holding plate 8k notch 9,59 Fixed plate 10 Aperture forming plate 11 Opening 11d Engagement part 15 Locking part 16 Locked part 17. Lock release section 18 Opening window 25 slits 26 Buffer plate 28 First retaining hole 66 Second retaining hole X1,X2 packaging box

Claims

1. It has a first wall section, a second wall section opposite to the first wall section, a back panel connected between the first wall section and the second wall section, and a first side panel section and a second side panel section that, together with the back panel, surround the contents from at least three sides during box construction. A retaining plate is attached to the leading edge of the second wall portion. A fixing plate is attached to the leading edge of the aforementioned retaining plate. The back panel has a blank sheet in which an opening can be formed to allow the fixing plate to be inserted and pulled down, or the opening is already formed therein.

2. The blank sheet according to claim 1, wherein the fixing plate is fixed to the inner surface of an opening-forming plate that is detachably formed within the opening.

3. The opening-forming plate or the fixing plate has a locking portion, The back panel has a locking portion formed therein for locking the locking portion, The blank sheet according to claim 1, wherein the second wall portion and the retaining plate can be fixed in an assembled state.

4. The blank sheet according to claim 1, wherein a detachable locking release portion is formed below the locking portion.

5. The blank sheet according to claim 1, wherein the retaining plate has a first retaining hole, notch and / or slit formed therein for the upper part of the contents to pass through.

6. A front panel rising from the first wall is installed between the first side panel and the second side panel. The blank sheet according to claim 1, wherein the front panel is provided at a height that does not reach the second wall, and the top of the front panel is open.

7. A front panel rising from the first wall is installed between the first side panel and the second side panel. The first side panel, the front panel, and the second side panel are formed with slits that rise from the first wall at a predetermined height and extend continuously from the middle of the first side panel in the width direction through the front panel to the middle of the second side panel in the width direction. The blank sheet according to claim 1, wherein the part above the slit can be folded towards the back panel to serve as a buffer for the contents.

8. A pre-box formed from a blank sheet according to any one of claims 1 to 7.

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