JP2017094612A - Decorative sheet, and decorative laminate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative sheet with excellent designability.SOLUTION: A decorative sheet 6 is formed by laminating, on a printing original fabric 2 comprising one of polyolefin and polyester, an anchor layer 3 comprising one of acryl polyurethane resin and polycarbonate resin, a printed layer 4 printed with ultraviolet-curable ink jet ink, and a clear layer 5 formed by ionizing radiation crosslinking, in the stated order.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a decorative sheet and a decorative board.

  Conventionally, as a decorative sheet, there exists a technique of patent document 1, for example. In the technique described in Patent Document 1, a printing layer is formed on a printing original fabric using ink jet printing excellent in the production of small lots and various varieties. In the technique described in Patent Document 1, an aqueous pigment ink and a solvent-based pigment ink are used as the ink-jet ink.

Japanese Patent Laid-Open No. 2001-71447

However, in the technique described in Patent Document 1, when a polyolefin film or a polyester film is used as a printing raw material and an ultraviolet curable inkjet ink is used as an inkjet ink in consideration of productivity, the printing original is used. There was a possibility that the adhesion between the substrate and the printing layer was lowered, the printing layer was peeled off from the printing original fabric, and the design property was lowered.
This invention pays attention to the above points, and it aims at providing the decorative sheet and decorative board excellent in the designability.

  In order to solve the above-described problems, an embodiment of the present invention includes an anchor layer made of any one of an acrylic polyurethane-based resin and a polycarbonate-based resin, an ultraviolet curable type, on a printing raw material made of any of polyolefin and polyester. A printing layer printed with inkjet ink and a clear layer by ionizing radiation crosslinking are laminated in this order.

  According to one aspect of the present invention, an anchor layer made of any one of an acrylic polyurethane-based resin and a polycarbonate-based resin on a printing raw material made of either a polyolefin-based film or a polyester-based film, that is, an ultraviolet curable type Since a layer having a relatively high adhesion to the ink-jet ink is provided, the adhesion between the printing layer and the printing original fabric can be improved, and the printing layer is difficult to peel off from the printing original fabric, thereby providing a decorative sheet with excellent design. be able to.

It is an end view showing the decorative sheet and the decorative board according to the embodiment.

Next, embodiments of the present invention will be described with reference to the drawings.
Here, the drawings are schematic, and the relationship between the thickness and the planar dimensions, the ratio of the thickness of each layer, and the like are different from the actual ones. Further, the embodiment described below exemplifies a configuration for embodying the technical idea of the present invention, and the technical idea of the present invention is that the material, shape, structure, etc. of the component parts are as follows. It is not something specific. The technical idea of the present invention can be variously modified within the technical scope defined by the claims described in the claims.

(Decorative board 1)
As shown in FIG. 1, the decorative board 1 of the present embodiment has an anchor layer 3, a printed layer 4 printed by inkjet printing, and a clear layer 5 formed by ionizing radiation cross-linking on one side of a printing original fabric 2. A decorative sheet 6 is formed by laminating in order, and a base material 9 is bonded to the other surface of the original printing fabric 2 via a primer layer 7 and an adhesive layer 8. The decorative board 1 of the present embodiment is particularly suitable for uses such as interior materials and furniture.
(Print fabric 2)
The printing original fabric 2 is a sheet-like layer made of a resin film. As the resin film, either polyolefin or polyester can be used.

(Anchor layer 3)
The anchor layer 3 is a layer for fixing the inkjet ink applied by inkjet printing. The anchor layer 3 can be provided by applying a coating solution for the anchor layer 3 on the surface of the printing original fabric 2. The coating apparatus is not particularly limited, and a known coating apparatus can be used. For example, a gravure coater, a bar coater, or a blade coater can be used.
The anchor layer 3 can be made of either acrylic polyurethane resin or polycarbonate resin. Thereby, on the printing raw fabric 2 which consists of either a polyolefin-type film and a polyester-type film, the anchor layer 3 which consists of either an acrylic polyurethane-type resin and a polycarbonate-type resin, ie, an ultraviolet curable inkjet ink, A layer having relatively high adhesion can be provided. For this reason, the adhesion between the printing layer 4 and the printing original fabric 2 can be improved, and the printing layer 4 is hardly peeled off from the printing original fabric 2.

As an acrylic polyurethane-based resin, for example, considering adhesiveness with inkjet ink, 3.8% by mass of silica containing 10 parts by mass of the curing agent with respect to 100 parts by mass of the main agent and having a particle diameter of 1 μm or more and 8 μm or less. The added acrylic urethane type resin is preferable. In this case, acrylic polyol is used as the main agent, and isocyanate is used as the curing agent.
Further, for example, a polyester urethane-based vinyl chloride-vinyl acetate copolymer containing 3 parts by mass of a curing agent with respect to 100 parts by mass of the main agent and added with 1.5% by mass of silica having a particle size of 1 μm or more and 8 μm or less, That is, a mixture of polyester urethane resin and vinyl chloride-vinyl acetate copolymer may be employed. In this case, an acrylic urethane resin composed of acrylic and urethane copolymer is used as the main agent, and isocyanate is used as the curing agent.
On the other hand, as the polycarbonate-based resin, for example, a polycarbonate-based resin containing 4 parts by mass of the curing agent with respect to 100 parts by mass of the main agent is preferable in consideration of adhesion to the inkjet ink. In this case, bisphenol A is used as the main agent, and phosgene is used as the curing agent.
Moreover, you may add additives, such as surfactant, an antifoamer, a thickener, and a water resistance agent, to the anchor layer 3 as needed.

(Print layer 4)
The printed layer 4 is a layer on which a design for imparting design properties with inkjet ink is printed. The print layer 4 can be provided by printing a pattern on the surface of the anchor layer 3 by inkjet printing. As the inkjet ink, for example, an ultraviolet curable inkjet ink can be used. Moreover, as a pattern, the pattern suitable for the location where the decorative sheet 6 and the decorative board 1 are used can be selected, for example, wood grain, cork, pottery, and an abstract pattern.
(Clear layer 5)
The clear layer 5 is a layer made of a resin that is transparent or translucent to such an extent that the pattern of the printed layer 4 can be seen through. As the transparent or translucent resin, for example, an ultraviolet curable resin can be used.

(Primer layer 7)
The primer layer 7 is a sheet-like layer made of a primer. The primer is not particularly limited, and a known primer can be used. For example, a mixture of a polyester urethane resin and a vinyl chloride-vinyl acetate copolymer can be used.
(Adhesive layer 8)
The adhesive layer 8 is a sheet-like layer made of an adhesive. The adhesive is not particularly limited, and a known adhesive can be used. For example, a PUR adhesive can be used.

(Substrate 9)
The base material 9 is a plate-shaped member made of a metal or wood. As the metal system, for example, aluminum, steel, stainless steel, or a composite panel can be used. As a composite panel, for example, there is a panel provided with a sheet-like resin layer serving as a core and metal plates (aluminum, galvalume, stainless steel, etc.) attached to both surfaces of the resin layer. Moreover, as a wood system, MDF (medium density fiberboard), a plywood, and a particle board can be used, for example.

(Effect of this embodiment)
The invention according to this embodiment has the following effects.
(1) The decorative sheet 6 according to the present embodiment includes an anchor layer 3 made of any one of an acrylic polyurethane-based resin and a polycarbonate-based resin, an ultraviolet curable type, on a printing raw fabric 2 made of either polyolefin or polyester. A printing layer 4 printed with inkjet ink and a clear layer 5 by ionizing radiation crosslinking are laminated in this order.
According to such a configuration, the anchor layer 3 made of either an acrylic polyurethane-based resin or a polycarbonate-based resin on the printing raw fabric 2 made of either a polyolefin-based film or a polyester-based film, that is, ultraviolet curing. Since a layer having a relatively high adhesion with the ink jet ink is provided, the adhesion between the printing layer 4 and the printing original fabric 2 can be improved, and the printing layer 4 is difficult to peel off from the printing original fabric 2 and has excellent design. A decorative sheet 6 can be provided.

(2) In the decorative sheet 6 according to the present embodiment, the acrylic polyurethane-based resin of the anchor layer 3 contains 10 parts by mass of a curing agent with respect to 100 parts by mass of the main agent, and silica 3.8 having a particle size of 1 μm or more and 8 μm or less. It is an acrylic urethane resin to which mass% is added.
According to such a configuration, it is possible to provide the decorative board 1 having good adhesion with the inkjet ink.
(3) In the decorative sheet 6 according to the present embodiment, the polycarbonate resin of the anchor layer 3 is a polycarbonate resin containing 4 parts by mass of the curing agent with respect to 100 parts by mass of the main agent.
According to such a configuration, it is possible to provide the decorative board 1 having good adhesion with the inkjet ink.

(4) In the decorative sheet 6 according to the present embodiment, the acrylic polyurethane resin of the anchor layer 3 contains 3 parts by mass of the curing agent with respect to 100 parts by mass of the main agent, and has a silica particle size of 1 μm or more and 8 μm or less. It is a mixture of a polyester urethane resin to which mass% is added and a vinyl chloride-vinyl acetate copolymer.
According to such a configuration, it is possible to provide the decorative board 1 having good adhesion with the inkjet ink.
(5) The decorative board 1 according to this embodiment is formed by bonding a decorative sheet 6 to a base material 9.
According to such a structure, the decorative board 1 excellent in design property can be provided.

Embodiments according to the present invention will be described.
Example 1
In Example 1, the coating liquid for the primer layer 7 was applied to one surface of the printing original fabric 2. As the printing raw fabric 2, a polyester raw fabric having a thickness of 0.070 mm was used. Moreover, as a coating liquid for the primer layer 7, a mixture of a polyester urethane resin and a vinyl chloride-vinyl acetate copolymer containing 3 parts by mass of a curing agent with respect to 100 parts by mass of the main agent was used. The coating amount of the coating solution was 1.2 g / m ² . Further, 1.5% by mass of silica having a particle diameter of 2 μm was added. Subsequently, the applied coating solution was dried to form a primer layer 7 on one surface of the printing original fabric 2.
Subsequently, a coating solution for the anchor layer 3 was applied to the other surface of the printing original fabric 2. As a coating liquid for the anchor layer 3, an acrylic urethane resin containing 10 parts by mass of a curing agent with respect to 100 parts by mass of the main agent was applied. The glass transition point of the acrylic urethane resin was 102 ° C. To the acrylic urethane resin, 3.8% by mass of silica having a particle size of 2 μm was added. The coating amount of the coating solution was 1.3 g / m ² . Subsequently, the applied coating solution was dried to form the anchor layer 3.

Subsequently, the base material 9 was bonded to one surface of the printing original fabric 2 through the primer layer 7. Specifically, the base material 9 was bonded onto the primer layer 7 by applying an adhesive. As the substrate 9, MDF having a thickness of 15 mm was used. A PUR adhesive was used as the adhesive. The amount of adhesive applied was 40 g / m ² . And the adhesive agent was dried and the adhesive bond layer 8 was formed.
Subsequently, a pattern was printed on the anchor layer 3 by ink jet printing to form a printing layer 4. As the inkjet ink, an ultraviolet curable inkjet ink (Dainippon Screen: TruePressJET W3200UV) was used. Subsequently, a coating liquid for clear layer 5 (Sanyu Paint Rabin: RF-00-197) was applied on print layer 4 by a float coat. Subsequently, the coating solution was cured by ionizing radiation to form a clear layer 5. The thickness was 80 μm.

(Example 2)
In Example 2, as the coating liquid for the anchor layer 3, a polycarbonate urethane resin containing 4 parts by mass of the curing agent with respect to 100 parts by mass of the main agent was used. The coating amount of the coating solution was 0.9 g / m ² . Otherwise, the configuration was the same as in Example 1.
(Example 3)
In Example 3, as a coating solution for the anchor layer 3, a polyester urethane resin and a vinyl chloride-vinyl acetate copolymer containing 3 parts by mass of a curing agent with respect to 100 parts by mass of the main agent (Arakawa Chemical Industries, Ltd .: A mixture with KL-564) was used. 1.5% by mass of silica having a particle size of 2 μm was added to this coating solution. Otherwise, the configuration was the same as in Example 1.

Example 4
In Example 4, polybutylene terephthalate having a thickness of 0.075 mm was used as the printing original fabric 2. Otherwise, the configuration was the same as in Example 1.
(Example 5)
In Example 5, polybutylene terephthalate having a thickness of 0.075 mm was used as the printing original fabric 2. Otherwise, the configuration was the same as in Example 2.
(Example 6)
In Example 5, polybutylene terephthalate having a thickness of 0.075 mm was used as the printing original fabric 2. Otherwise, the configuration was the same as in Example 3.

(Comparative Example 1)
In Comparative Example 1, a vinyl chloride-vinyl acetate copolymer resin (manufactured by Nissin Chemical Industry: Solvine C) was used as the coating solution for the anchor layer 3. The coating amount of the coating solution was 1.2 g / m ² . Otherwise, the configuration was the same as in Example 1.
(Comparative Example 2)
In Comparative Example 2, water-based ink-jet ink (LIOJET ink manufactured by Toyo Ink) was used as the ink-jet ink for the printing layer 4. Otherwise, the configuration was the same as in Example 1.
(Comparative Example 3)
In Comparative Example 3, the silica particle diameter of the anchor layer 3 was 1 μm. Otherwise, the configuration was the same as in Example 1.
(Comparative Example 4)
In Comparative Example 4, the silica particle size of the anchor layer 3 was 10 μm. Otherwise, the configuration was the same as in Example 1.

(Evaluation judgment)
The following evaluation was implemented about the decorative sheets 6 of Examples 1 to 6 and Comparative Examples 1 and 2 described above.
(Ink adhesion evaluation)
Based on JIS K5400, it evaluated by the 1 mm base | substrate peel test. At that time, the case where the peeling of the substrate was 0 was regarded as acceptable “◯”, and the case where the separation of the substrate was 1 or more was regarded as unacceptable “x”.
(Design evaluation)
It was judged visually whether the design property was good. At that time, the case where there was no graininess and ink bleeding and the design property was good was evaluated as “good”, and the case where the design property was not good was determined as “fail”.
The evaluation results are shown in Tables 1 and 2.

From Table 1, it can be seen that the decorative sheet 6 in which the anchor layer 3, the printing layer 4, and the clear layer 5 are laminated in this order on the printing raw fabric 2 is excellent in ink adhesion and design properties. It was. Therefore, according to this invention, it turned out that the suitable decorative sheet 6 can be provided. In addition to the decorative sheets 6 described in Examples 1 to 6, similar effects could be confirmed for various decorative sheets 6 having the materials and numerical values described in the above embodiment.
In contrast, the decorative sheet 6 using vinyl chloride-vinyl acetate copolymer resin (manufactured by Nissin Chemical Industry Co., Ltd .: Solvine C) as the coating liquid for the anchor layer 3 in Comparative Example 1, the design properties are acceptable. Although it became "(circle)", ink adhesiveness was disqualified [x]. Moreover, in the comparative example 2, ie, the decorative sheet 6 using the water-based inkjet ink as the inkjet ink of the printing layer 4, both the ink adhesion and the design were rejected as “x”.

DESCRIPTION OF SYMBOLS 1 Decorative board 2 Original print 3 Anchor layer 4 Print layer 5 Clear layer 6 Decorative sheet 7 Primer layer 8 Adhesive layer 9 Base material

Claims (5)

  Clear printing by ionizing radiation cross-linking on an anchor layer made of either acrylic polyurethane resin or polycarbonate resin, printing layer printed with UV-curable ink-jet ink, on a printing stock made of either polyolefin or polyester A decorative sheet in which layers are laminated in this order.   The acrylic polyurethane-based resin is an acrylic urethane-based resin containing 10 parts by mass of a curing agent with respect to 100 parts by mass of the main agent, and having added 3.8% by mass of silica having a particle size of 1 μm or more and 8 μm or less. The decorative sheet according to claim 1.   The acrylic polyurethane-based resin contains 3 parts by mass of a curing agent with respect to 100 parts by mass of the main agent, and a polyester urethane-based resin and vinyl chloride-vinyl acetate to which 1.5% by mass of silica having a particle size of 1 μm to 8 μm is added. The decorative sheet according to claim 1, wherein the decorative sheet is a mixture with a copolymer.   The decorative sheet according to claim 1, wherein the polycarbonate resin is a polycarbonate resin containing 4 parts by mass of a curing agent with respect to 100 parts by mass of the main agent.   The decorative board formed by bonding the decorative sheet of any one of Claim 1 to 4 to a base material.

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