JP7527643B2 - Work Sheet - Google Patents

Description

The present invention relates to a work sheet for assembling three-dimensional objects by bending and folding sheet material.

Many craft sheets have been proposed in the past that allow three-dimensional objects, such as paper crafts, to be assembled by bending or folding sheet materials such as paper and connecting parts of the sheet materials with glue (see, for example, Patent Document 1).

The device in Patent Document 1 has an adhesive section coated with an adhesive to make assembly easier. Specifically, a design surface section with a pattern or the like applied to the surface of the sheet material is formed, and a glue tab section that is continuous with the design surface section is formed, and an adhesive section is formed on part of the back surface of the sheet material for attaching to the glue tab section. A three-dimensional object is formed by attaching the corresponding adhesive section to the glue tab section.

Utility Model Registration No. 3048763

However, when using the assembly method of Patent Document 1, if the shape of the adhesive portion does not match the shape of the glue tab without error, there is a risk that part of the adhesive portion will be exposed after assembly, or part of the glue tab will not be attached, making it impossible to achieve a clean assembly. Moreover, because the glue tab and adhesive portion are limited small parts of the whole, there is a good chance that errors will occur during the manufacturing process.

The present invention was proposed in consideration of these circumstances, and its purpose is to provide a work sheet that allows three-dimensional objects to be neatly assembled using sheet materials.

In order to achieve the above-mentioned object, the work sheet of the present invention is a work sheet for assembling a three-dimensional body by bending and folding sheet material, the sheet material having an adhesive surface on its back surface, the adhesive surface including an adhesive portion for bonding the adhesive surfaces together, and the sheet material having clearly marked fold lines, mountain fold lines, and valley fold lines for bonding the back surfaces together .
In addition, in order to achieve the above-mentioned object, the work sheet of the present invention is a work sheet for assembling a three-dimensional body by bending and folding sheet material, the sheet material having an adhesive surface on the back side, the adhesive surface including an adhesive portion for bonding the adhesive surfaces together, and when the work of the three-dimensional body is completed, a portion of the adhesive surface is exposed.

The construction sheet of the present invention has the above-mentioned structure, so that three-dimensional objects can be neatly assembled using the sheet material.

FIG. 2 is a plan view showing a work sheet according to an embodiment of the present invention. 2A to 2C are diagrams showing an assembly procedure for the work sheet shown in FIG. 1 . FIG. 11 is a plan view showing a work sheet according to another embodiment of the present invention. 4A to 4C are diagrams showing an assembly procedure for the work sheet shown in FIG. 3. FIG. 11 is a plan view showing a work sheet according to still another embodiment of the present invention. 6 is a perspective view showing a completed state of a three-dimensional object using the work sheet shown in FIG. 5 .

Below, an embodiment of the present invention will be described with reference to the attached drawings. First, the basic configuration of the work sheet 1 according to the embodiment will be described.

The work sheet 1 is a sheet-like material for assembling a three-dimensional body 5 by bending and folding the sheet material 10. The sheet material 10 has an adhesive surface 12 on the back side, and the adhesive surface 12 includes an adhesive portion 12a for bonding the adhesive surfaces 12 together.

As the adhesive for the adhesive surface 12, for example, an acrylic adhesive that has excellent transparency, heat resistance, and weather resistance can be preferably used. The adhesive strength of the acrylic adhesive can be designed in various ways, from weak adhesive type to strong adhesive type, making it highly convenient.

It is also desirable to use an adhesive that is initially weak but becomes stronger as time passes. When using this work sheet 1, it is desirable to use an adhesive that allows you to redo the application if you make a mistake in pasting or bonding. In the case of the above-mentioned acrylic adhesives, some peel off easily in the early stages before they become fixed in about 24 hours, so it is desirable to use such an adhesive.

Specific examples of this type of work sheet 1 include those shown in Figures 1 and 2, those shown in Figures 3 and 4, and those shown in Figures 5 and 6.

In all of these examples, the adhesive surface 12 is formed on the entire back surface of the sheet material 10, and further includes a release paper 7 to protect the adhesive surface 12 before use (assembly). The release paper 7 also serves as a backing for the sheet material 10 in a predetermined unfolded shape to form a three-dimensional body, and is a release paper 7 that is rectangular or the like and larger than the sheet material 10 (hereinafter referred to as the sheet material body 10). The peripheral portion of the sheet material body 10 is a margin 13 that is not used as part of the sheet material body 10.

The sheet material body 10 may be formed of a synthetic resin sheet such as a PVC sheet or a paper sheet, and a solvent inkjet printing sheet is suitable, for example. If it is assumed that the three-dimensional body 5 will be used outdoors, it is desirable to use a synthetic resin sheet with low moisture absorption or a sheet with a laminated surface as the sheet material body 10. There are no particular limitations on the printing method for the sheet material body 10, but a roll-type inkjet printer that is capable of large-format printing and can use eco-solvent ink with vivid colors is preferably used.

Before use, the sheet material body 10 and the margin 13 are removably attached to the mount (release paper 7). The sheet material body 10 has cuts along its contour so that it can be removed when used.
The following explains each in order.

Figure 1 is a plan view of a work sheet 1 for assembling a roughly triangular pyramid-shaped accessory case (see Figure 2) with one side open and a hollow interior. The sheet material body 10 used to assemble the three-dimensional body 5 has seven equilateral triangles connected together, with an extension piece 17 connected to one side of each of two of the triangles. Note that one of the two equilateral triangles connected with the extension piece 17 is slightly smaller than the other equilateral triangle.

In the margin 13 that is not used for assembly, instructions on how to assemble are printed. In the illustrated example, different types of lines (fold lines 18) are used to indicate folding techniques, specifically, dashed line/double fold (valley) fold, two-dot chain line/valley fold, and one-dot chain line/mountain fold. These instructions are used when folding the back side up, and as shown in Figure 2, dashed lines, two-dot chain lines, and one-dot chain lines are printed on the back side of the sheet material body 10 as per the instructions.

In addition, from an aesthetic point of view, it is preferable that such fold lines 18 are not printed on the front surface 11 of the sheet material body 10, but they may be printed if ease of folding is taken into consideration. For convenience, thin lines are shown in Figure 1 in the areas corresponding to the fold lines 18 on the back surface.

Here, the overlapping fold is a fold in which the adhesive surfaces 12 (bonding adhesive parts 12a) are folded together to form a valley fold, a valley fold is a fold other than the overlapping fold, and a mountain fold is a fold in which the surfaces 11 of the sheet material body 10 are folded closer together.

In addition to the above-mentioned precautions, text, pictures, and diagrams showing the assembly steps described below may also be printed in the margin 13.

The assembly of the three-dimensional body 5 can be carried out according to the procedure shown in Figure 2. The entire back surface of the sheet material body 10 is an adhesive surface 12, of which the shaded areas in the figure are the areas that are attached to the front surface 11 of the sheet material body 10, and the shaded areas are the areas that are exposed after the three-dimensional body 5 is assembled. The exposed adhesive surface 12 is attached to another object after assembly. The remaining white areas on the back surface are used as adhesive parts 12a for bonding, where back surfaces (adhesive surfaces) are bonded together.

First, in the unfolded state A, all six large equilateral triangular portions 15 are folded in the direction of the arrow in the figure along the fold lines 18, and the adhesive surfaces 12 of the adjacent large equilateral triangular portions 15 are bonded together, thereby hiding the bonding adhesive portions 12a, and as a result, the shape of the intermediate state B is formed.

Then, the three bonded equilateral triangles (marked with circles in the figure) form a triangular pyramid, and the extension piece 17 connected to the small equilateral triangle portion 16 is folded toward the front surface 11 to form the shape of the intermediate state C.

Next, the small equilateral triangular portion 16 is folded (a mountain fold when viewed from the back side) so as to overlap the surface 11 of one of the large equilateral triangular portions 15 that is adjacent to it, and the adhesive surface 12 of the extension piece 17 is attached to a part of the surface 11 of the large equilateral triangular portion 15, thereby forming the intermediate state D. At this time, the adhesive surface 12 on the back side of the small equilateral triangular portion 16 is exposed.

Finally, the adhesive portion 12a of the extension piece 17 of the large equilateral triangle portion 15 is attached to the end of one side of the adhesive surface 12 of the exposed small equilateral triangle portion 16, forming a roughly triangular pyramid-shaped accessory case with the apex facing downward and the opening facing upward, which is the final state E.

In this final state E, a part (shaded part) of the adhesive surface 12 of the small equilateral triangular portion 16 is exposed, and the accessory case can be fixed in place by attaching this part to, for example, a pillar or a desk indoors.

In this way, once the assembled accessory case is fixed, all of the adhesive surfaces 12 are hidden and not exposed because they are attached to the bonding adhesive portion 12a, the surface 11 of the sheet material body 10, or another object.

In this way, the three-dimensional body 5 is assembled in a neat state with the adhesive surface 12 not exposed. Furthermore, although the inside of the triangular pyramid of the accessory case is exposed, the surface 11 of the sheet material body 10 is exposed by bonding the bonding adhesive parts 12a together, so there is no risk of the aesthetic appearance being marred. If the surface 11 of the sheet material body 10 is decorated with various colors and patterns, these will appear on the outer and inner surfaces of the accessory case, improving the design.

In addition, because the adhesive surface 12 is formed over the entire back surface of the sheet material body 10 as in this embodiment, folding errors can be reduced compared to when the adhesive surface 12 is formed locally, and as a result, misalignment is less likely to occur during bonding or pasting, allowing the three-dimensional body 5 to be assembled neatly. Furthermore, if fold lines 18 such as overlapping fold lines, mountain fold lines, and valley fold lines are printed on the adhesive surface 12 as in this embodiment, folding errors are less likely to occur and the sheet can be folded neatly.

In addition, since no scissors or glue are required, there is no hassle in assembling it. In the example of Figures 1 and 2, the sheet material body 10 is not separated but is composed of a single sheet, so there is no risk of losing parts of the material and there is almost no possibility of making mistakes when pasting it.

Next, we will explain the examples shown in Figures 3 and 4. Figure 3 is a plan view of a work sheet 1 for assembling the hollow, openable and retractable die shown in Figure 4.

The sheet material body 10 used to assemble this three-dimensional body 5 is not an integral piece as in the example in Figure 1, but is composed of two types of separation materials 20, 26. Note that in this work sheet 1 as well, the entire back surface of the sheet material body 10 is made into an adhesive surface 12, and release paper 7 is attached to the adhesive surface 12 and the back surface of the marginal portion 13.

One of the two types of separation materials 20, 26 is a main sheet 20 in an unfolded state (see FIG. 3(a)) that is made up of six square sections 21 joined together to form the dice body, and the other of the two types of separation materials 20, 26 is a cover sheet 26 (see FIG. 3(b)) to be attached to the back surface of the main sheet 20. The cover sheet 26 is separated into squares to correspond to the six square sections of the main sheet 20.

The cover sheets 26 may be formed as a continuous, integrated sheet like the main sheet 20, but it is preferable that they are separated to facilitate bonding. Also, to facilitate folding, it is preferable that each of the cover sheets 26 is slightly smaller than the square portions 21 of the main sheet 20, so that the linear adhesive at the valley folds is not exposed when folded.

The main body sheet has four adhesive margins 22, and one of the square sections 21 has an extension piece 24 connected to it. The adhesive surfaces 12 on the backs of the square sections 21 are attached to the surfaces of the four adhesive margins 22, as shown by the arrows in FIG. 3(a). The backs of the square sections attached to the surfaces of the adhesive margins form an adhesive surface 12 that is integrated with the adhesive portion for bonding the square sections and the adhesive portion for bonding the adhesive margins, and a cover sheet 26 is attached to the adhesive surface 12.

The square portion on which the extension piece 24 is formed serves as the opening and closing lid 23 of the die, and the extension piece 24 serves as an insertion piece when the opening and closing lid 23 is closed. A cover sheet 26 of the same shape is attached to the adhesive surface 12 (adhesive portion 12a for bonding) on the back side of the square portion 21 with the extension piece 24.

The dice assembled from these separating materials 20 and 26 can be used as a small item holder. As shown in FIG. 4(b), when the opening and closing lid 23 is open, the surface of the cover sheet 26 attached to the inner surface and the back of the opening and closing lid 23 is exposed.

Therefore, if the surface of the cover sheet 26 is colored and patterned, there is no risk of the aesthetic appearance being marred even when the opening and closing lid 23 is opened and the inside is exposed, and the design of the inside of the pyramid can be expressed.

Next, we will explain the examples shown in Figures 5 and 6. Figure 5 is a plan view of the work sheet 1 for assembling the cubic character body shown in Figure 6.

As shown in Figures 5(a) to (d), the sheet material body 10 used to assemble this three-dimensional body is composed of four types of separation materials 30, 33, 35, and 36.

The separation material 30 in FIG. 5(a) is a main sheet 30 having six continuous square portions 31, and the separation material 33 in FIG. 5(b) is a cover sheet 33 for attaching to the adhesive portion 12a for attachment on the back surface of the main sheet 30. The face of a character is printed on the surface of one of the square portions 31.

The main sheet 30 has seven adhesive margins 32. As shown by the arrows in FIG. 5(a), four of the adhesive margins 32 have the adhesive surface 12 on the back side of the target square portion 31 attached to the surface of the adhesive margin 32. Then, the cover sheet 33 is attached to the adhesive surface 12 that is integrated by the adhesive portion 12a for bonding of the square portion 31 and the adhesive portion 12a for bonding of the adhesive margin 32.

The three adhesive margins 32 formed on one of the square portions 31 at the end of FIG. 5(a) can be attached to the surface 11 of the target portion (the portion marked with diagonal lines in FIG. 5(a)).

The separation materials 35 and 36 shown in Fig. 5(c) and (d) are sheets for forming the pair of arm portions 37 and the pair of antenna portions 38 shown in Fig. 6, and each of the separation materials 35 and 36 has a line-symmetrical shape, and the adhesive surface 12 on the back surface is the adhesive portion 12a for bonding, except for the semicircular portions 35a and 36a at both ends.

The separation materials 35 and 36 shown in Figures 5(c) and (d) are folded outward at the semicircular portions 35a and 36a, and the rest are pasted together to form the arm portion 37 and antenna portion 38 as shown in Figure 6. The two semicircular portions 35a and 36a are then folded outward, so that the two semicircular portions 35a and 36a are connected to form a roughly circular adhesive surface 12. The character body is assembled by pasting the adhesive surface 12 to predetermined locations on the dice as the arm portion 37 and antenna portion 38.

This character body can be used as a figurine or plaything for small children. As mentioned above, all of the adhesive surfaces of the separation material are hidden by the cover sheet 33 or attached to other surfaces, so they are not exposed and can be finished in a neat state.

If this character is to be used as a figurine or plaything, a cubic wooden piece that matches the internal shape may be placed in the internal cavity during assembly. The inclusion of such a material makes it easier to attach the adhesive portion 32. A permanent magnet may also be placed in the hollow. For example, instead of attaching the cover sheet 33 to the back side of the hollow, a permanent magnet may be attached, allowing the character to be attached to a steel rack or the like.

Using the above-mentioned craft sheet 1, various three-dimensional objects 5 can be created, including not only the three examples mentioned above, but also origami, accessories such as brooches and earrings, promotional posters for use in stores, and full-scale paper crafts. It can also be used to create signs and objects to be installed outdoors. Furthermore, depending on the design, the three-dimensional object 5 can be made for small children, adults, or seniors, and it can also be made possible to experience the fun and joy of making things at events such as workshops without the need for scissors or glue.

In addition, the work sheet 1 described above has a release paper 7 that protects the adhesive surface 12, so it is easy to handle in the unfolded state before assembly as shown in Figures 1, 3, and 5, and is easy to store, transport, and display even when commercialized as a production kit for a three-dimensional body 5.

The above is an example of a sheet material 10 with an adhesive surface 12 formed over the entire back surface, but it is also possible for the adhesive surface 12 not to be formed on a portion of the back surface. In that case, the release paper 7 is not required for the portion that does not have the adhesive surface 12.

1 Working sheet 5 Three-dimensional body 7 Release paper 10 Sheet material (sheet material body)
REFERENCE SIGNS LIST 11 Surface 12 Adhesive surface 12a Adhesive portion for lamination 13 Margin 15 Large equilateral triangular portion 16 Small equilateral triangular portion 17 Extension piece 18 Fold line 20, 30 Main body sheet (separation material)
21, 31 Square portion 22, 32 Glue portion 23 Opening/closing cover 24 Extension piece (insertion piece)
26, 33 Cover sheet (separation material)
35 Separation material (for arm)
35a Semicircular portion 36 Separation material (for antenna portion)
36a Semicircular portion 37 Arm portion 38 Antenna portion

Claims (7)

A work sheet for assembling a three-dimensional object by bending and folding a sheet material,
the sheet material has an adhesive surface on a back surface thereof, and the adhesive surface includes an adhesive portion for bonding the adhesive surfaces together;
The work sheet is characterized in that the sheet material has fold lines, mountain fold lines, and valley fold lines clearly marked for bonding the back sides together . A work sheet for assembling a three-dimensional object by bending and folding a sheet material,
the sheet material has an adhesive surface on a back surface thereof, and the adhesive surface includes an adhesive portion for bonding the adhesive surfaces together;
A work sheet characterized in that , when work on the three-dimensional body is completed, a portion of the adhesive surface is exposed . In claim 1 ,
A work sheet characterized in that, when work on the three-dimensional body is completed, a portion of the adhesive surface is exposed. In claim 1 ,
A work sheet characterized in that, when work on the three-dimensional body is completed, all of the adhesive surfaces are attached. In any one of claims 1 to 4 ,
The work sheet further comprises a release paper for protecting the adhesive surface. In any one of claims 1 to 5 ,
A work sheet, characterized in that the sheet material is composed of a plurality of separate pieces. In any one of claims 1 to 6,
The work sheet is characterized in that the sheet material is a synthetic resin sheet.

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