JP7786192B2 - Packaging box with window and pattern for making packaging box with window - Google Patents

Description

This invention relates to a packaging box with a window. This invention also relates to a pattern for creating (assembling) a packaging box with a window.

Kagami mochi, toys, miscellaneous goods, and other products are sometimes displayed in stores in cardboard packaging boxes. In order to allow the product inside to be seen from the outside, packaging boxes are used that have a window covered with a transparent plastic film on the top or front of the box.

When separating and disposing of a paper packaging box and a plastic film, it is necessary to separate the plastic film from the packaging box. Patent Document 1 discloses a device in which a pair of break lines are provided along part of the periphery of a window hole formed in the front panel. By pressing between the pair of break lines, the periphery of the plastic film peels away from the periphery of the window hole.

JP 2013-136394 A

Since the plastic film is separated from the packaging box when the packaging box is to be disposed of, the inside of the packaging box is generally empty. When pressure is applied to the surface of a hollow packaging box where a pair of break lines are provided, the packaging box tends to become distorted before it tears along the break lines. In this case, the plastic film cannot be peeled off from the packaging box even if pressure is applied between the pair of break lines.

The purpose of this invention is to enable the resin film to be reliably and easily separated from the packaging box.

The packaging box with a window according to this invention is a packaging box formed into a rectangular parallelepiped by folding a single sheet of cardboard. The side or rear of the packaging box is an entrance for stored items, and this entrance is closed by a lid that is continuous with the bottom or top and is folded at a right angle. A window is formed on the top, front, or from the top to the front of the packaging box, and the peripheral edge of the transparent resin film that covers the window is adhered to the inside of the peripheral edge of the window frame formed on the top, front, or top and front. The surface on which the window is formed has a break line that extends in a direction connecting the corner of the rectangular edge that defines the entrance and the window frame.

By opening the lid, an entrance for putting in and taking out stored items opens on the side or rear. Because the packaging box is a rectangular parallelepiped, the entrance is square. The edges of the rectangular entrance are defined by the edges of the top, bottom, front and rear (if the entrance is located on the side), or by the edges of the top, bottom and left and right side (if the entrance is located on the rear).

According to this invention, a break line is formed on the surface portion on which the window is formed, and this break line extends in a direction connecting the corner of the rectangular edge portion defining the entrance and the window frame of the window. This allows the peripheral edge of the window (the peripheral edge of the surface portion on which the window is formed) to be easily and reliably torn along the break line. Once a tear is formed along the break line on the peripheral edge of the window frame, the transparent resin film can be separated from the peripheral edge of the window frame by simply lifting up the peripheral edge of the window frame. Because the edge of the transparent resin film is exposed where the peripheral edge of the window frame and the transparent resin film are separated, the edge of the transparent resin film can be grasped by hand. By grasping the edge of the transparent resin film and peeling it from the packaging box, the entire transparent resin film can be separated from the packaging box.

The break line may extend, for example, from a corner of the rectangular edge defining the entrance/exit to the window frame closest to that corner, or it may extend toward the window frame in the vicinity thereof. Furthermore, the cuts that make up the break line may be short or long, or may be a mixture of short and long cuts. Furthermore, the break line may be straight, or part or all of it may be arc-shaped. An arc-shaped break line is used, for example, when preventing the break line from forming over a specific image printed on the packaging box.

Preferably, a flap that can be folded at a right angle is provided on the inside of the lid surface. The flap can be grasped by hand, making it easy to break the periphery of the window frame along the break line and separate it from the transparent resin film.

In one embodiment, the break line starts at a corner of the rectangular edge and ends at the window frame. The periphery of the window frame can be torn cleanly along the break line.

In another embodiment, the break line starts at a position away from the corner of the rectangular edge and ends at the window frame. By not forming a break line near the corner of the rectangular edge, the packaging box can be made less weak or more susceptible to breakage.

Preferably, when the starting point is a position away from the corner of the square edge, an auxiliary break line is formed in the area between the corner of the square edge of the surface portion in which the window is formed and the starting point, branching into two lines extending from the starting point with the corner of the square edge in between. The auxiliary break line can assist in breaking the peripheral edge of the window frame from the corner of the square edge to the starting point (a position away from the corner of the square edge).

This invention also provides a paper pattern for making a rectangular parallelepiped packaging box with a window. A packaging box made using this paper pattern has a side or rear surface that serves as an entrance for items to be stored, and this entrance is closed by a lid surface that is continuous with the bottom or top surface and folded at a right angle. A window is formed in the top surface, the front surface, or from the top surface to the front surface, and a break line is formed in the surface where the window is formed, extending in a direction connecting the corner of the rectangular edge that defines the entrance and the window frame.

This shows a pattern for making a packaging box for kagami mochi. FIG. 1 is an oblique view of a packaging box for Kagami mochi. This shows how the transparent resin film is removed from the packaging box for Kagami mochi. This shows how the transparent resin film is removed from the packaging box for Kagami mochi. This shows how the transparent resin film is removed from the packaging box for Kagami mochi. This shows how the transparent resin film is removed from the packaging box for Kagami mochi. This shows a modified pattern for making a packaging box for Kagami mochi. This shows another variation of the pattern for making a packaging box for Kagami mochi. This shows another variation of the pattern for making a packaging box for Kagami mochi. This shows another variation of the pattern for making a packaging box for Kagami mochi. This shows another variation of the pattern for making a packaging box for Kagami mochi. This shows another variation of the pattern for making a packaging box for Kagami mochi. This shows another variation of the pattern for making a packaging box for Kagami mochi. This shows another variation of the pattern for making a packaging box for Kagami mochi. This shows another variation of the pattern for making a packaging box for Kagami mochi.

Figure 1 shows a single template (blank) for making a packaging box for kagami mochi, and Figure 2 is a perspective view of a packaging box for kagami mochi assembled using this template. Figure 2 shows the packaging box for kagami mochi with a kagami mochi set stored inside.

Figure 1 shows a development of a packaging box, depicting the outer surface of a single sheet of paper (blank) 1A punched out of cardboard. The mountain fold lines are indicated by dashed lines, and the valley fold lines are indicated by dashed lines.

A single sheet of template 1A used to form packaging box 1B (see Figure 2) has a bottom surface 14, front surface 11, top surface 12, rear surface 13, and adhesive tab 13A arranged in a continuous horizontal line. One side surface 15 (the right side when the packaging box is viewed from the front) (this side surface closes the entrance and exit for the contents, and will hereafter be referred to as the "lid surface 15") is formed on bottom surface 14 and continues in a direction perpendicular to the horizontal line. A locking tongue 15A is formed continuously at the tip of lid surface 15. Furthermore, roughly rectangular inner side flaps 17A, 17B are formed on front surface 11 and rear surface 13, respectively, and extend continuously in the same direction as lid surface 15.

The other side (the left side when viewing packaging box 1B from the front) is formed by side piece 16A, upper side piece 16B, upper side piece 16C, and lower side piece 16D, which extend continuously from front surface 11, top surface 12, rear surface 13, and bottom surface 14, respectively, to the side opposite lid surface 15. When packaging box 1B is formed, these portions 16A to 16D partially overlap each other to close the left side of packaging box 1B. Portions 16A and 16C have arc-shaped sides 18a and 18b that interlock when overlapped. Portions 16B and 16D are approximately trapezoidal.

A window 20 is formed from the front surface 11 to the top surface 12. The window 20 is a see-through window that allows the kagami mochi set and other items stored in the packaging box 1B to be seen from the front and top, and a transparent synthetic resin film (sheet) 21 is provided to cover the window 20. The edges of the transparent resin film 21 are adhered (glued) to the inside of the window frame edges of the windows 20 opened in the front surface 11 and top surface 12. In this embodiment, the window in the front surface 11 is rectangular, and the tip of the window in the top surface 12 (the part close to the rear surface 13) is formed in an outward-facing arc. The shape of the window 20 can be designed as desired.

A break line (perforation, dotted cut line) 41 is formed on the front surface 11 where the window 20 is opened, extending linearly in a direction connecting the boundary point a between the front surface 11, bottom surface 14, and cover surface 15 and the window frame corner h of the window 20 closest to boundary point a. The break line 41 is formed by a series of discontinuous cuts, and the cuts that make up the break line 41 may be short, straight lines or small holes. The window frame periphery of the front surface 11 is prone to tearing along the break line 41. Note that the position of a, which is one end (starting point) of the break line 41, does not necessarily have to exactly coincide with the boundary point between the front surface 11, bottom surface 14, and cover surface 15; it may be slightly off, for example, at a corner of the flap 17A that connects to the front surface 11.

When template 1A shown in Figure 1 is folded along the fold lines and assembled, a rectangular parallelepiped packaging box 1B as shown in Figure 2 is produced. The adhesive tab 13A of the rear panel 13 is glued to the inside surface of one side of the bottom panel 14. The left side panel is folded so that sections 16A-16D are inside, and sections 16A and 16C are then folded along the pre-formed fold line. The areas of sections 16A and 16C beyond the fold line overlap sections 16D and 16B, and this overlapping area is glued together. By unfolding sections 16A and 16C along the fold line and raising the box, the left side panel is formed by sections 16A-16D. At this point, arc-shaped sides 18a and 18b fit together. The left side panel is of the so-called auto-bottom type, but it does not necessarily have to be an auto-bottom type.

The right side of packaging box 1B serves as the entrance/exit for the Kagami Mochi set. After storing the Kagami Mochi set 30 inside packaging box 1B, the inner side flaps 17A, 17B are folded at right angles to cover the front and rear ends of the entrance/exit. Finally, the locking tongue 15A of the lid surface 15 is folded at an approximately right angle, and the lid surface 15 is then folded at a right angle at the boundary with the bottom surface 14, and the locking tongue 15A is inserted into packaging box 1B along the inside surface of the top surface 12. Assembly of packaging box 1B is complete. Packaging box 1B containing the Kagami Mochi set 30 is then displayed in stores in this state.

Referring to Figure 2, when packaging box 1B is assembled, break line 41 connects corner a of the rectangular edge that defines the entrance/exit for the contents of packaging box 1B (the rectangular area closed by lid surface portion 15 in Figure 2) to window frame corner h of window 20. Break line 41 is formed on one of the multiple surfaces of packaging box 1B where window 20 is formed, i.e., on the front surface 11 and/or top surface 12 in packaging box 1B, and extends from the corner of the rectangular edge that defines the entrance/exit for the contents toward the window frame of window 20. In packaging box 1B, break line 41 extends the shortest distance from corner a, which is the boundary point between front surface 11, bottom surface 14, and lid surface portion 15, i.e., corner a, which is located in the lower left corner of the four corners of the rectangular edge when viewed from the front of the entrance/exit.

The customer can see the kagami mochi set 30 (for example, kagami mochi-shaped packs placed on three sides and adorned with various decorations) inside the packaging box 1B through a window (see-through window) 20 covered with a transparent resin film 21. When removing the kagami mochi set 30 from the packaging box 1B, the lid surface 15 of the packaging box 1B is opened.

Figures 3 to 6 show how to separate (separate) the transparent resin film 21 covering the window 20 from the packaging box 1B.

With the front face 11 of the packaging box 1B facing up, pinch the lid surface 15 with your left hand and the flap 17A or the front face 11 to which the flap 17A is connected (the window frame periphery of the front face 11 to which the transparent resin film 21 is not adhered) with your right hand (Figure 3).

Pinch the flap 17A with your right hand and flip it over toward the upper right (Figure 4). As mentioned above, the front surface 11 with the window 20 cut in it has a fracture line 41 that extends linearly from corner a to the window frame corner h of the window 20. Therefore, you can easily tear the periphery of the window frame of the front surface 11 along fracture line 41, starting from corner a and ending at corner h.

Flip up the flap 17A (Figure 5). The window frame periphery of the front surface 11, in the area connected to the flap 17A, is peeled away from the transparent resin film 21.

By peeling off the peripheral edge of the window frame of the front surface 11, the edge of the transparent resin film 21 that was adhered to the peripheral edge of the window frame is exposed. By grasping the exposed edge of the transparent resin film 21 with the right hand and peeling it off from the packaging box 1B, the entire transparent resin film 21 is separated from the packaging box 1B (Figure 6). The transparent film can be reliably and easily separated from the packaging box 1B.

The lid surface 15 may be continuous with the top surface 12 instead of the bottom surface 14. Also, the entrance/exit for the Kagami mochi set 30 may be formed on the rear surface of the packaging box 1B instead of the right side.

Figure 7 shows a modified packaging box pattern 1C. It differs from the packaging box pattern 1A shown in Figure 1 in that the length of each of the multiple cuts that make up the break line 42 is longer. The length of the cuts that make up the break line can be designed as desired.

Figure 8 shows yet another modified packaging box pattern 1D. It differs from the packaging box pattern 1A shown in Figure 1 in that the end point of the break line 43 is not at the window frame corner of the window 20, but at point k on the window frame edge slightly off from the window frame corner. Point k, where the end point of the break line 43 is located, is located on the window frame side along the direction in which the flap 17A is turned up (see Figures 4 and 5). In this way, the end point of the break line does not necessarily have to be at the window frame corner h of the window 20.

Figure 9 shows yet another modified packaging box pattern 1E. It differs from the packaging box pattern 1A shown in Figure 1 in that the break line 44 extends in the direction connecting corner a and the window frame corner h of the window 20 closest to corner a, but starts at position b, a short distance from corner a. By not forming the break line 44 in the immediate vicinity of corner a, which will become the corner of the packaging box, it is possible to prevent the packaging box from losing strength or becoming easily damaged.

Figure 10 shows yet another modified packaging box pattern 1F. It differs from the packaging box pattern 1E shown in Figure 9 in that an auxiliary break line 45a is formed between corner a and start point b, branching into two short lines that sandwich corner a in the direction from start point b of break line 45 toward corner a. The auxiliary break line 45a can assist in breaking the peripheral edge of the window frame between corner a and start point b.

Figure 11 shows yet another modified packaging box template 1G. It combines the break line 43 shown in Figure 8 and the break line 44 shown in Figure 9, with the start point of break line 46 being at position b, a short distance from corner a, and the end point being at position k on the side edge of the window frame of window 20.

Figure 12 shows yet another modified packaging box pattern 1H. It differs from the packaging box pattern 1A shown in Figure 1 in that the break line 47 is not straight, but is formed to connect corners a and h in an arc. The direction in which the arc-shaped break line 47 protrudes is preferably along the direction in which the flap 17A is turned up (see Figures 4 and 5). For example, it is possible to avoid forming the break line 47 over a specific pattern printed on the packaging box.

Figure 13 shows yet another modified packaging box template 1I. A break line 48 is formed on the front surface 11, combining the linear break line described with reference to Figure 1 and the arcuate break line described with reference to Figure 12.

Figure 14 shows a packaging box pattern 1J of yet another variant. The difference is that the break line 48 shown in Figure 13 is straight near corner a and arc-shaped near window frame corner h, whereas the break line 49 provided in pattern 1J in Figure 14 is arc-shaped near corner a and straight near the window frame. The break line 49 shown in Figure 14 also differs from the break line 48 shown in Figure 13 in that the end point of break line 49 is at position k on the window frame side edge of window 20, and in that break line 49 is made up of both short and long cuts.

Figure 15 shows another variant of packaging box pattern 1K. Unlike the above-mentioned patterns 1A, 1C to 1J, the window 20A is formed only in the top surface 12, not in the front surface 11. The window 20A in the top surface 12 is sealed from the inside by a transparent resin film 21A.

The boundary point c between the front surface 11, top surface 12, and flap 17A becomes the upper left corner of the rectangular edge that defines the rectangular entrance when assembled into a packaging box, as shown in Figure 2. A linear break line 41A is formed on the top surface 12 in which the window 20 is opened, running from corner c to the window frame corner j of the window 20A, which is closest to corner c. By tearing the periphery of the window frame of the top surface 12 along break line 41A and then peeling it back, the edge of the transparent resin film 21A can be exposed.

It goes without saying that the window may be formed only in the front portion 11. For packaging boxes with a window formed only in the front portion 11, forming a break line as shown in any of Figures 1 to 14 makes it easy to separate the transparent resin film from the packaging box.

1A, 1C, 1D, 1E, 1F, 1G, 1H, 1I, 1J, 1K Paper pattern 1B Kagami mochi packaging box
11 Front part
12 Top part
13 Rear part
13A Glue allowance
14 Bottom part
15 Lid surface part
16A One side of the side
16B Side piece upper part
16C Side part
16D lower side piece
17A, 17B Side inner flaps
20, 20A Window
21, 21A Transparent resin film
30 Kagami mochi set
41, 41A, 42, 43, 44, 45, 46, 47, 48, 49 Break lines
45a Auxiliary breaking line

Claims (6)

A packaging box formed into a rectangular parallelepiped shape with a front surface, a back surface, left and right side surfaces, a top surface, and a bottom surface by folding a single sheet of cardboard,
The side or rear part of the packaging box is the entrance for the contents, and this entrance is closed by a lid part that is continuous with the bottom or top part and is bent at a right angle to be able to be opened and closed freely ,
A window is formed on the top surface of the packaging box, on the front surface, or from the top surface to the front surface, and the peripheral portion of the transparent resin film that covers the window is adhered to the inside of the peripheral portion of the window frame of the window formed on the top surface, on the front surface, or on the top surface and the front surface,
A break line is formed on the peripheral edge of the window frame of the surface portion on which the window is formed, extending in a direction connecting a corner of the rectangular edge portion defining the entrance and the window frame of the window.
Packaging box with window. A flap that can be folded at a right angle is provided on the inside of the lid surface.
The packaging box with a window according to claim 1. The break line starts at a corner of the rectangular edge and ends at the window frame.
The packaging box with a window according to claim 1 or 2. The break line starts at a position away from the corner of the rectangular edge and ends at the window frame.
The packaging box with a window according to claim 1 or 2. An auxiliary break line extending from the starting point and branching into two so as to sandwich a corner of the rectangular edge portion therebetween is formed in the range between the corner of the rectangular edge portion of the surface portion in which the window is formed and the starting point.
The packaging box with a window according to claim 4. A template for making a packaging box with a window formed in a rectangular parallelepiped shape having a front surface, a rear surface, left and right side surfaces, a top surface, and a bottom surface ,
The packaging box made from the above-mentioned paper pattern has a side or rear portion which is an entrance for the contents to be stored, and this entrance is closed by a lid portion which is continuous with the bottom or top portion and is folded at a right angle to be able to be opened and closed freely ,
A window is formed in the top surface, the front surface, or from the top surface to the front surface,
A break line is formed on the peripheral edge of the window of the surface portion on which the window is formed, extending in a direction connecting a corner of the rectangular edge portion defining the entrance and the window frame of the window.
Pattern.