decorative objects

Abstract

To provide a decorative body that suppresses cracking or misalignment of a printed layer due to press processing. [Solution] The decorative body 1 comprises a surface layer 4 made of a polymeric material, a back layer 9 also made of a polymeric material and provided on the back side of the surface layer 4, an intermediate layer 7 provided between the surface layer 4 and the back layer 9, the intermediate layer 7 being made of a resin with a lower breaking elongation than the surface layer 4 and the back layer 9 and adhered to the surface layer 4 and the back layer 9, and a first printed layer 6a provided on the surface of the intermediate layer 7.

Description

[Technical Field]

[0001] The present invention relates to a decorative object. [Background technology]

[0002] Patent Document 1 discloses a card-type key holder (decorative object) in which an image is recorded on one or both surfaces of a card substrate by a thermal dye sublimation transfer recording method, and a key holder chain is attached to a hole opened at one end of the card substrate. Patent Document 1 also discloses, as an example, that a dedicated card punching machine is used to punch holes for the key holder chain and the outer shape of the card in the shape of a book, and then the key holder chain is attached. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-113729 Summary of the Invention [Problem to be solved by the invention]

[0004] Conventional decorative objects have generally been hard, but in recent years, with the changing and diversifying preferences of users, there has been a demand for decorative objects that are bendable and have a soft feel.

[0005] However, if the decorative body of Patent Document 1 uses a soft material for the card substrate, the card substrate may be significantly deformed during press processing. Press processing is usually performed before the punching process, which cuts the decorative body into the desired shape. If the card substrate is significantly deformed by press processing, the image recording surface (printing layer) cannot follow the deformation of the card substrate, and defects such as cracks on the image recording surface or displacement from the card substrate may occur.

[0006] The present disclosure has been made in consideration of these points, and aims to suppress cracking or misalignment of the printing layer due to press processing. [Means for solving the problem]

[0007] The present disclosure relates to a decorative body comprising: a surface layer made of a polymeric material; a back layer made of a polymeric material and provided on the back side of the surface layer; an intermediate layer provided between the surface layer and the back layer, the intermediate layer having a smaller breaking elongation than the surface layer and the back layer and being adhered or fixed to the surface layer and the back layer; and a printed layer provided on at least one selected from the surface of the surface layer, the back side of the surface layer, the surface of the intermediate layer, and the back side of the intermediate layer. [Effects of the Invention]

[0008] In the decorative article according to the present disclosure, the intermediate layer has a lower breaking elongation than the front and back layers, and therefore tends to be less susceptible to deformation than the front and back layers. Therefore, deformation of the intermediate layer is suppressed during press processing. Furthermore, since the front and back layers are bonded or fixed to the intermediate layer directly or indirectly via the printed layer, deformation of the intermediate layer is suppressed, thereby suppressing deformation or displacement of the front and back layers. Therefore, cracking or displacement during press processing is suppressed in the printed layer provided on the front surface of the front layer, the back surface of the front layer, or the front or back surface of the intermediate layer. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view showing a decorative object according to an embodiment. [Figure 2] FIG. 2 is a cross-sectional view taken along line II-II of FIG. [Figure 3] FIG. 10 is a view corresponding to FIG. 2 according to a modified example of the embodiment. [Figure 4] 1 is a photograph showing the decorative article obtained in Example 1. [Figure 5] 1 is a photograph showing the decorative article obtained in Reference Example 1. DETAILED DESCRIPTION OF THE INVENTION

[0010] (Embodiment) Hereinafter, an embodiment that is an example of the present disclosure will be described.

[0011] -Overall structure- As shown in Figure 1, the decorative item 1 according to this embodiment comprises a main body 2 formed in a generally rectangular plate shape, and a chain 3. The use of the decorative item 1 is not limited, but it may be attached as a decoration to a user's belongings such as a mobile phone or bag, or it may be used as a key chain or character card, for example.

[0012] 2, the main body 2 is composed of a laminate in which, from the front surface side to the back surface side, a front surface layer 4, a first adhesive layer 5, a first printed layer 6a, an intermediate layer 7 (core material), a second adhesive layer 8, and a back surface layer 9 are laminated in this order. The main body 2 is manufactured by punching the laminate into a desired shape (in this embodiment, a substantially rectangular, substantially diamond, or substantially parallelogram shape).

[0013] In this specification, the terms "front surface" and "back surface" are used to explain the positional relationship of the configuration of the decorative body 1, and do not limit the use of the decorative body 1.

[0014] -Surface layer and back layer- The front surface layer 4 and the back surface layer 9 are made of a flexible, bendable soft polymer material. Examples of the soft polymer material include soft vinyl chloride resin, low-density polyethylene resin, polyurethane resin, and synthetic rubber. Soft vinyl chloride resin is preferred as the soft polymer material from the viewpoints of ease of handling and high transparency. The soft vinyl chloride resin contains, for example, 30 to 50 parts by mass of a plasticizer per 100 parts by mass of vinyl chloride polymer, and has a tensile modulus of elasticity of 20 to 40 MPa.

[0015] The surface layer 4 and the back layer 9 have a breaking elongation of 200% or more and 500% or less in both the first direction and the second direction shown in Fig. 1. The thickness of each of the surface layer 4 and the back layer 9 is not limited, but from the viewpoint of making it less susceptible to breakage, it is preferably 100 µm or more, and more preferably 500 µm or more. From the viewpoint of reducing the amount of polymer material used and making it easier to bend, the thickness of each of the surface layer 4 and the back layer 9 is preferably 3000 µm or less, more preferably 1500 µm or less, and even more preferably 1000 µm or less.

[0016] -1st printing layer- The first printed layer 6a is provided by printing on the surface of the intermediate layer 7. The first printed layer 6a is composed of an easy-adhesion coating layer and ink, and displays decorative pictures, patterns, photographs, letters, etc. The first printed layer 6a may be printed on the entire surface of the intermediate layer 7, or may be printed on only a part of the surface of the intermediate layer 7. The first printed layer 6a may be printed using a known printing machine.

[0017] -Middle class- The intermediate layer 7 is made of a resin film having a lower breaking elongation than the front layer 4 and the back layer 9. Specifically, the breaking elongation of the intermediate layer 7 in the first and second directions in FIG. 1 is lower than those of the front layer 4 and the back layer 9. The constituent material of the intermediate layer 7 is not limited, but examples thereof include polyester film, synthetic paper, and hard polyvinyl chloride film. An example of the polyester film is polyethylene terephthalate (PET). An example of the synthetic paper is one containing polypropylene (PP).

[0018] The intermediate layer 7 may be transparent or not. From the viewpoint of making the first printed layer 6a easily visible from the surface side, the intermediate layer 7 is preferably transparent, white, translucent, or the like. The intermediate layer 7 may contain a matting agent to make it translucent.

[0019] The intermediate layer 7 has a breaking elongation of 20% or more and less than 200% in both the first direction and the second direction. The thickness of the intermediate layer 7 is not limited, but is preferably 50 μm or more, and more preferably 100 μm or more, from the viewpoint of suppressing elongation of the front layer 4 and the back layer 9. The thickness of the intermediate layer 7 is preferably 500 μm or less, and more preferably 300 μm or less, from the viewpoint of making it easier for the user to fold the main body portion 2.

[0020] -First adhesive layer and second adhesive layer- The first adhesive layer 5 bonds the back surface of the surface layer 4 to the surface of the first printed layer 6a or the surface of the intermediate layer 7. When the first printed layer 6a is printed only on a portion of the surface of the intermediate layer 7 as shown in FIG. 2, the portion of the surface of the intermediate layer 7 where the first printed layer 6a is not printed is bonded by the first adhesive layer 5.

[0021] The second adhesive layer 8 bonds the back surface of the intermediate layer 7 to the front surface of the back surface layer 9. The first adhesive layer 5 and the second adhesive layer 8 are not limited to any particular material, but may be made of, for example, a cured product of a pressure-sensitive adhesive. From the viewpoint of firmly fixing the front surface layer 4 or the back surface layer 9 to the intermediate layer 7, the first adhesive layer 5 and the second adhesive layer 8 are preferably made of a cured product of an adhesive that does not leave tack after curing. The first adhesive layer 5 and the second adhesive layer 8 may be made of a cured product of a thermosetting adhesive, or may be made of a cured product of an electromagnetic wave-curing adhesive such as ultraviolet light-curing adhesive.

[0022] -Measurement method- The breaking elongation of the surface layer 4, intermediate layer 7, and back layer 9 may be measured according to a method conforming to the Japanese Industrial Standards (JIS) appropriate for the materials used. Specifically, if the intermediate layer 7 is made of a PET film, the measurement may be performed according to a method conforming to K 7161-1 cited in JIS C-2318. If synthetic paper is used as the intermediate layer 7, the measurement may be performed according to a method conforming to JIS P8113:2006. If the surface layer 4 and back layer 9 are made of a soft polyvinyl chloride resin, the measurement may be performed according to a method conforming to JIS K-6732.

[0023] In the present disclosure, it is sufficient that the breaking elongation of the intermediate layer 7 measured at room temperature is smaller than the breaking elongation of the front layer 4 and the back layer 9 measured at room temperature. However, depending on the constituent materials of each layer, it may not be possible to measure the breaking elongation at room temperature. In such cases, it is sufficient to estimate that the breaking elongation of the intermediate layer 7 measured at room temperature is smaller than the breaking elongation of the front layer 4 and the back layer 9 measured at room temperature.

[0024] -Actions and effects of the embodiment- In recent years, there has been an increasing demand for decorative items such as character cards and key chains printed with images of favorite idols or animation characters as a type of so-called "oshikatsu goods." These decorative items tend to be required to be bendable and soft to the touch.

[0025] The decorative body 1 according to this embodiment has a surface layer 4 and a back layer 9 made of a soft polymer material such as soft vinyl chloride resin, and therefore can meet the properties required for "oshikatsu goods."

[0026] The decorative body 1 of this embodiment has a surface layer 4 and a back layer 9 made of a soft polymeric material such as soft polyvinyl chloride resin, so the main body 2 can be attached to a flat wall surface, window glass surface, etc.

[0027] In the decorative body 1 according to this embodiment, the breaking elongation of the intermediate layer 7 is smaller than the breaking elongation of the front layer 4 and the back layer 9, so the intermediate layer 7 tends to be less susceptible to deformation than the front layer 4 and the back layer 9. This prevents deformation of the intermediate layer 7 during press processing. Furthermore, the front layer 4 and the back layer 9 are bonded to the intermediate layer 7 by the first adhesive layer 5 and the second adhesive layer 8, so that preventing deformation of the intermediate layer 7 prevents deformation or displacement of the front layer 4 and the back layer 9. This prevents cracking or displacement during press processing in the first printing layer 6a provided on the surface of the intermediate layer 7.

[0028] In the decorative article 1 according to this embodiment, the first printed layer 6a is provided on the surface of the intermediate layer 7. Therefore, the first printed layer 6a is protected from the outside by the surface layer 4, and external damage is suppressed.

[0029] In the decorative body 1 of this embodiment, the surface layer 4 and back layer 9 exposed to the outside are made of a soft polymeric material such as soft polyvinyl chloride resin, thereby reducing damage to surrounding items (keys, bags, etc.).

[0030] The decorative body 1 of this embodiment comprises a first adhesive layer 5 provided on the back side of the surface layer 4 and a second adhesive layer 8 provided on the front side of the back layer 9, thereby preventing the surface layer 4, intermediate layer 7 and back layer 9 from shifting out of position.

[0031] (Modification of the embodiment) The decorative body 1 according to a modified example of the above embodiment will be described below. In the following description, the same symbols as those in the above embodiment will be used for the components common to the above embodiment, and the description may be omitted.

[0032] As shown in FIG. 3, the decorative body 1 of this modified example has a second printed layer 6b. The second printed layer 6b is provided by printing on the back surface of the intermediate layer 7. The second printed layer 6b displays decorative patterns, designs, photographs, letters, etc. using ink on the easy-adhesion coating layer. The second printed layer 6b may be printed on the entire back surface of the intermediate layer 7, or may be printed on only a portion of the back surface of the intermediate layer 7. The second printed layer 6b may be printed using a known printing machine.

[0033] The second adhesive layer 8 bonds the back surface of the intermediate layer 7 or the back surface of the second printed layer 6b to the front surface of the back surface layer 9. When the second printed layer 6b is printed only on a portion of the back surface of the intermediate layer 7, the portion of the back surface of the intermediate layer 7 where the second printed layer 6b is not printed is bonded by the second adhesive layer 8.

[0034] When the intermediate layer 7 is transparent, decorative patterns, designs, photographs, letters, etc. may be displayed on the first printed layer 6a, and a solid print in white or the like may be applied to the second printed layer 6b as a background. In this way, the first printed layer 6a can have an improved appearance by using the second printed layer 6b as a background.

[0035] If the intermediate layer 7 is not transparent, the first printed layer 6a and the second printed layer 6b can be decorated differently, so that different decorations can be seen when the main body 2 is viewed from the front side and the back side.

[0036] As described above, the decorative article 1 according to this modification has a high degree of freedom in terms of the form of decoration by including the second printed layer 6b in addition to the first printed layer 6a.

[0037] (Other embodiments) The main body 2 is not limited to being rectangular in plan view, but may be, for example, circular, elliptical, polygonal other than rectangular, or star-shaped in plan view. The main body 2 may also be punched into any other shape desired by the user.

[0038] The decorative body 1 may be used as a pendant or a badge. The decorative body 1 does not have to be provided with a chain 3. The decorative body 1 may be used as an interior decoration, for example, by standing the main body 2 on a table.

[0039] The decorative body 1 may be provided with auxiliary parts such as a base, pin, clip, etc.

[0040] Even if cracks or misalignment occur in the first printed layer 6a or the second printed layer 6b of the decorative body 1, the cracks are preferably less than 1 mm in length, and the misalignment is preferably less than 4 mm.

[0041] In the present disclosure, the breaking elongation of the intermediate layer 7 needs only to be smaller than the breaking elongation of the surface layer 4 and the back layer 9, so the surface layer 4 and the back layer 9 do not have to be made of a soft polymeric material, and the intermediate layer 7 does not have to be made of resin. Furthermore, the first adhesive layer 5 and the second adhesive layer 8 are not essential, so they may be adhered to the surface of the first printed layer 6a or the intermediate layer 7, and the back layer 9 may be adhered to the back surface of the intermediate layer 7 or the second printed layer 6b.

[0042] In the above-described embodiment and modified examples, the first printed layer 6a may be provided on at least one of the surface of the surface layer 4, the back surface of the surface layer 4, and the surface of the intermediate layer 7. In the modified example of the above-described embodiment, the second printed layer 6b may be provided on at least one of the back surface of the intermediate layer 7, the surface of the back surface layer 9, and the back surface of the back surface layer 9. [Example]

[0043] Below, we will explain examples in which decorative objects according to the present invention were manufactured and evaluated.

[0044] (Decorative body manufacturing) --Example 1-- A commercially available PET film (with double-sided adhesive coating) with a thickness of 100 μm was prepared as the intermediate layer. A pattern was printed on the surface of the PET film using an inkjet printer to form a printed layer.

[0045] A surface layer was laminated on the surface side of the intermediate layer on which the printing layer was printed, via a first adhesive layer, by press processing. A back layer was laminated on the back side of the intermediate layer, via a second adhesive layer, by press processing. Both the surface layer and the back layer were made of soft polyvinyl chloride resin and had a thickness of 1000 μm.

[0046] In this way, a laminate was obtained in which the surface layer, first adhesive layer, intermediate layer, second adhesive layer, and back layer were laminated in this order. The laminate was then punched to obtain the main body of the decorative item shown in Figure 4. The main body was also punched to form a through hole for passing a chain through.

[0047] --Example 2-- A decorative article was obtained in the same manner as in Example 1, except that white synthetic paper made of PP was used as the intermediate layer.

[0048] -Reference example 1- A decorative body was obtained in the same manner as in Example 1, except that a printed layer was formed on the back surface of the surface layer and that the first adhesive layer, intermediate layer, and second adhesive layer were not provided. In the decorative body of Reference Example 1, the surface layer and the back layer were integrated by thermal welding.

[0049] (evaluation) Table 1 shows the configuration and evaluation results of the decorative articles obtained in each Example and Reference Example 1. Figures 4 and 5 show photographs of the decorative articles obtained in Example 1 and Reference Example 1 before the formation of through holes.

[0050] [Table 1]

[0051] Neither cracks nor misalignment were observed in the printed layer in Examples 1 and 2. In Reference Example 1, the front and back layers stretched significantly during the process of laminating the front and back layers together and the press process before punching, and the ink in the printed layer was unable to keep up with the stretching, resulting in the occurrence of multiple cracks CR with lengths of 1 mm or more, as shown in Figure 5. [Industrial Applicability]

[0052] The present invention is useful as a decorative object. [Explanation of symbols]

[0053] 1. Decoration 2 Main body 3 Chain 4 Surface layer 5 First adhesive layer 6a 1st printing layer 7 Middle layer (core material) 6b 2nd printing layer 8 Second adhesive layer 9 Backing layer

Claims

1. a surface layer made of a polymer material; a back surface layer made of a polymer material and provided on the back surface side of the front surface layer; an intermediate layer provided between the surface layer and the back surface layer, the intermediate layer having a smaller breaking elongation than the surface layer and the back surface layer, and being adhered or fixed to the surface layer and the back surface layer; A decorative body comprising a printed layer provided on at least one selected from the surface of the surface layer, the back surface of the surface layer, the surface of the intermediate layer, and the back surface of the intermediate layer.

2. 2. The decorative body according to claim 1, wherein the printed layer is provided on at least one selected from the back surface of the surface layer, the front surface of the intermediate layer, and the back surface of the intermediate layer.

3. 3. The decorative body according to claim 1, wherein the surface layer and the back layer have a tensile modulus of elasticity of 40 MPa or less.

4. a first adhesive layer provided on the back surface side of the surface layer; The decorative body according to claim 1 or 2, further comprising a second adhesive layer provided on the front surface side of the back surface layer.

5. 3. The decorative body according to claim 1, wherein the intermediate layer is made of at least one material selected from the group consisting of polyester film, synthetic paper, and hard polyvinyl chloride film.

6. the mid layer has a breaking elongation of 20% or more and less than 200%, 3. The decorative body according to claim 1, wherein the breaking elongation of the surface layer and the back layer is 200% or more and 500% or less.

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