JP7200798B2 - Decorative sheet for recoating - Google Patents

Description

The present invention relates to a decorative sheet for recoating.

BACKGROUND ART For surface finishing of furniture, building interior materials, home electric appliances and the like, a decorative sheet having a wood grain pattern or the like on a base material is laminated on the surface of the above products by means of lamination or the like. Decorative sheets include those that are already colored and those that are not colored and are coated with paint such as stain later. The latter is a decorative sheet for recoating. being called. Here, the stain is a paint for coloring the surface of wood, and is obtained by adding a pigment or dye to linseed oil, resin, or the like in the form of liquid, gel, spray, or the like. There are water-based stains and oil-based stains, which are called oil stains, stain varnishes, aqueous stains, and the like. After assembling the product using the material laminated with the decorative sheet for recoating for surface finishing, paint such as stain is applied to the decorative sheet on the surface of the product to color the product in any desired color. can be done easily.

As a conventional decorative sheet for recoating, there has been proposed one in which a pattern is printed on a base material using printing ink and then a top coating is applied (see, for example, Patent Document 1). However, since conventional recoating decorative sheets have a smooth surface, even if a stain or the like is applied thickly, they tend to sag, making it difficult to obtain a surface with excellent texture.
Therefore, in order to obtain a surface with excellent texture when a stain or the like is applied thickly, the base material is printed with a pattern using printing ink, and the recoat layer located on the surface is recoated using a non-woven fabric. A decorative sheet for use has been proposed (see, for example, Patent Document 2). The decorative sheet for recoating proposed in Patent Document 2 reliably retains a coloring agent such as stain in the voids of the nonwoven fabric, prevents the paint from dripping from the surface of the decorative sheet, and provides a coating with excellent texture. can work.

JP-A-60-149457 JP-A-9-262934

However, in the recoatable decorative sheet proposed in Patent Document 2, it is necessary to select a material that can be thermally welded to the base material or the recoat layer in order to obtain adhesion between the base material and the recoat layer. There is a problem that the material and recoat layer cannot be freely selected. Furthermore, in the past, it was possible to select materials containing polyvinyl chloride (PVC) and phthalates as heat-weldable materials, but these materials are currently used in consideration of environmental issues. is avoided, making it difficult to select the material for the base material or the recoat layer.
In addition, when materials that cannot be thermally welded are used for the base material and the recoat layer, it is necessary to provide an adhesive layer between the base material and the recoat layer. .

In view of the above problems, the present invention provides a recoatable decorative sheet that exhibits good adhesion between the base material and the recoat layer even when materials that cannot be thermally welded are used for the base material and the recoat layer. With the goal.

In order to solve the above-mentioned problems, the present inventors conducted extensive research and found that the above-mentioned problems were solved by providing a picture ink layer containing a binder component having a specific glass transition temperature between the substrate and the recoat layer. found to do. That is, the present invention provides the following [1] to [5].
[1] a base material containing paper fibers, a design ink layer provided on at least one side of the base material and containing a binder component A having a glass transition temperature of −60° C. or more and 90° C. or less; A decorative sheet for recoating, comprising: a recoating layer provided on the side of the picture ink layer opposite to the base material, containing cellulose fibers and having voids between the cellulose fibers.
[2] The recoatable decorative sheet according to [1], wherein the recoat layer has a resin coating film on at least part of the surface of the cellulose fibers while maintaining at least part of the voids.
[3] The content of the binder component A is 30% by mass or more and 100% by mass or less with respect to the total binder components in the composition for forming the pattern ink layer, [1] or The decorative sheet for recoating of [2].
[4] The recoating decorative sheet of any one of [1] to [3], wherein the binder component A contains at least one selected from the group consisting of acrylic resins, urethane resins and vinyl chloride-vinyl acetate copolymers. .
[5] The recoatable decorative sheet according to any one of [1] to [4], wherein the recoat layer has a colorant in at least part of the voids and the surface of the cellulose fibers.

According to the present invention, it is possible to provide a recoatable decorative sheet that exhibits good adhesion between the base material and the recoat layer even when materials that cannot be thermally welded are used for the base material and the recoat layer.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic cross-sectional view (No. 1) of a recoating decorative sheet according to an embodiment of the present invention; FIG. 2 is a schematic cross-sectional view (part 2) of a recoating decorative sheet according to an embodiment of the present invention;

Embodiments of the present invention will be described below with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, 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. Therefore, specific thicknesses and dimensions should be determined by referring to the following description. In addition, it goes without saying that there are portions with different dimensional relationships and ratios between the drawings.

(Embodiment)
[Decorative sheet for recoating]
The recoating decorative sheet 1 according to the embodiment of the present invention, as shown in FIG. A design ink layer 20 containing a binder component A having a temperature of −60° C. or more and 90° C. or less, and a design ink layer 20 provided on the side opposite to the base material 10, containing cellulose fibers, and having a gap between the cellulose fibers. and a recoat layer 30 having

<Base material>
As the base material 10, for example, a paper base material containing paper fibers can be used. Alternatively, flame-retardant paper or the like obtained by mixing or impregnating these papers with a flame retardant can be used. These materials may be used alone, or may be laminated in any combination, such as a laminate of papers.
The base material 10 may be appropriately added with additives such as a flame retardant, an inorganic agent, a dry paper strength agent, a wet paper strength agent, a coloring agent, a sizing agent, and a fixing agent.

The basis weight of the base material 10 is not particularly limited, but from the viewpoint of durability, it is preferably 20 g/m ² or more, more preferably 30 g/m ² or more, and 50 g/m ² or more. is more preferred. Further, the basis weight of the substrate 10 is preferably 150 g/m ² or less, more preferably 120 g/m ² or less, from the viewpoint of facilitating penetration of the binder component A contained in the design ink layer 20. It is preferably 100 g/m ² or less, more preferably 100 g/m 2 or less.

The thickness of the base material 10 is not particularly limited, but it is preferably 50 μm or more and 250 μm or less, more preferably 80 μm or more and 230 μm or less, in consideration of physical properties such as strength, mass and flexibility of the recoating decorative sheet 1. is more preferably 100 μm or more and 200 μm or less.

On the side of the substrate 10 in the thickness direction on which the pattern ink layer 20 is provided, a first filling portion (not shown) is formed by filling a part of the voids of the paper fibers with the binder component A constituting the pattern ink layer 20. ) are provided. The first filling part ensures adhesion between the substrate 10 and the design ink layer 20 .

<Pattern ink layer>
The pattern (pattern) of the pattern ink layer 20 can be arbitrarily selected according to the desired design appearance, such as a wood grain pattern, a stone pattern, a texture pattern, a leather grain pattern, and a geometric pattern. In the decorative sheet for recoating 1, for example, when expressing a wood grain design appearance, a wood grain pattern may be selected as the design ink layer 20. FIG.
The design ink layer 20 may be formed on any portion between the base material 10 and the recoat layer 30 for the purpose of enhancing the design of the recoating decorative sheet 1, and is formed on the entire surface of the base material 10. may have been
From the viewpoint of improving the adhesion between the design ink layer 20 and the recoat layer 30, the area ratio of the design ink layer 20 to the recoat layer 30 is preferably 60% or more, and more preferably 70% or more. , is more preferably 80% or more, and the upper limit may be 100% or less.
The design ink layer 20 can be formed by printing, for example. The design ink layer 20 may be a single layer, or may be formed from two or more layers.

As the ink used for forming the pattern ink layer 20, an ink obtained by appropriately mixing a binder component with coloring components such as pigments and dyes, an extender, a solvent, a stabilizer, a plasticizer, a catalyst, a curing agent, and the like is used.

When the design ink layer 20 is heated by lamination or the like, the fluidity of the binder component A contained as a binder component is increased, and the anchor effect is achieved by penetrating fluid receptacles such as fibers arranged adjacently. Demonstrate. When the design ink layer 20 is placed between the base material 10 and the recoat layer 30 and heated by lamination or the like, it exerts an anchor effect on the base material 10 and the recoat layer 30, respectively. Also, the adhesion to the recoat layer 30 is improved. Further, when the recoat layer 30 is placed on the design ink layer 20 and heated by lamination or the like, the anchor effect is exerted on the recoat layer 30 and adhesion to the recoat layer 30 is improved.
The picture ink layer 20 contains a binder component A having a glass transition temperature Tg of −60° C. or more and 90° C. or less in order to improve adhesion by an anchor effect. If the design ink layer 20 contains only a binder component having a glass transition temperature Tg of less than −60° C., problems such as difficulty in maintaining the structure of the design (pattern) and blocking problems arise. Further, when only a binder component having a glass transition temperature Tg exceeding 90° C. is contained in the patterned ink layer 20, it is necessary to work at a high temperature in order to obtain adhesion, resulting in poor workability. good adhesion cannot be obtained.
The glass transition temperature Tg of the binder component A is −55° C. or higher and 85° C. or lower from the viewpoints of facilitating formation and workability of the pattern (pattern) and obtaining sufficient adhesion to the base material 10 and the recoat layer 30. is preferably -50°C or higher and 80°C or lower, and more preferably -45°C or higher and 75°C or lower.

The content of the binder component A is the design ink that forms the design ink layer, from the viewpoints of facilitating formation of the design (pattern) and workability, and from the viewpoint of obtaining sufficient adhesion between the base material 10 and the recoat layer 30. It is preferably 30% by mass or more and 100% by mass or less, more preferably 40% by mass or more and 95% by mass or less, and 50% by mass or more and 90% by mass or less based on the total binder component in the layer-forming composition. More preferably:

The binder component is not particularly limited, and examples thereof include acrylic resins, urethane resins, vinyl chloride-vinyl acetate copolymers, styrene resins, polyester resins, chlorinated polyolefin resins, polyvinyl butyral resins, alkyd resins, petroleum-based resins, ketones. Resins, epoxy resins, melamine resins, fluororesins, silicone resins, cellulose derivatives, rubber-based resins, and the like. These resins as binder components can be used alone or in combination of two or more.
The binder component A can be selected from the binder components described above. Since the patterned ink layer 20 has a glass transition temperature Tg that exhibits the desired effect, acrylic resins, urethane resins and vinyl chloride-vinyl acetate resins can be used. It preferably contains at least one selected from the group consisting of polymers.
The binder component A may include two or more types having different glass transition temperatures Tg. For example, the binder component A may contain two types of resins: a resin having a glass transition temperature Tg of −60° C. or higher and −20° C. or lower and a resin having a glass transition temperature Tg of 60° C. or higher and 90° C. or lower. can. By making the binder component A have such a structure, it is possible to reduce process risks such as ink removal during the printing process and blocking between processes.
Moreover, as a binder component, it can be set as the structure containing the binder component A and another binder component. For example, as the binder component A, a resin having a glass transition temperature Tg of 40° C. or higher and 80° C. or lower is included, and as other binder components, two types of resins having a glass transition temperature Tg of 90° C. or higher are included. can be done.

Examples of coloring components include inorganic pigments such as titanium white, lead white, carbon black, iron black, yellow lead, titanium yellow, red iron oxide, cadmium red, ultramarine blue, and cobalt blue; quinacridone red, isoindolinone yellow, and nickel azo complexes. , organic pigments or dyes such as phthalocyanine blue; metal pigments consisting of scale-like foil pieces such as aluminum and brass; known pearlescent (pearl) pigments consisting of scale-like foil pieces such as titanium dioxide-coated mica and basic lead carbonate can be appropriately selected and used from the following.

The thickness of the pattern ink layer 20 is not particularly limited, but from the viewpoint of exhibiting the design property of the pattern well and from the viewpoint of obtaining the adhesion between the substrate 10 and the recoat layer 30, it is 0.1 μm or more and 10.0 μm or less. , more preferably 0.5 μm or more and 7.5 μm or less, and even more preferably 1.0 μm or more and 5.0 μm or less. When the design ink layer 20 is formed of two or more layers, the total thickness of each design ink layer 20 is preferably within the above range.

The design ink layer 20 may contain additives such as an antioxidant and an ultraviolet absorber as long as the effects of the present invention are not impaired.
Gravure printing, silk screen printing, gravure offset printing, flexographic printing, ink jet printing, and the like are preferable as means for applying the patterned ink layer 20. Gravure printing is more suitable for large lots, and ink jet printing is more suitable for small lots. preferable.

<Recoat layer>
The recoat layer 30 contains cellulose fibers, preferably mainly composed of cellulose fibers, and more preferably cellulose fibers alone. Here, the main component refers to a component exceeding 50% by mass of the components constituting the recoat layer 30, preferably exceeding 60% by mass, more preferably exceeding 70% by mass, and 80% by mass. More preferably, it is a component exceeding mass %.
The recoat layer 30 is preferably one that allows the pattern of the design ink layer 20 to be visually recognized, and preferably has transparency such as transparent paper or translucent paper. Specifically, the transparency of the recoat layer 30 is preferably 50% or less, preferably 40%, in terms of opacity measured in accordance with JIS P8138:2000 (the smaller the value, the better the transparency). It is more preferably 30% or less, more preferably 30% or less. The lower limit of opacity is about 10%. The recoat layer 30 is formed by, for example, a method of treating paper with concentrated sulfuric acid to make it transparent, a method of making paper by beating chemical pulp to a high degree, a method of impregnating base paper with a clarifying agent such as wax and synthetic resin, and a method of impregnating synthetic fiber. and synthetic pulp mixed paper can be obtained by a known production method such as a method of heat-pressurizing to make it transparent, and it may be obtained by any production method.

^The basis weight of the ^recoat layer 30 is not particularly limited. It is more preferably ² or more. Further, the basis weight of the recoat layer 30 is preferably 40 g/m ² or less, more preferably 35 g/m ² or less, from the viewpoint of facilitating penetration of the binder component A contained in the design ink layer 20. It is preferably 30 g/m ² or less, more preferably 30 g/m 2 or less.

The thickness of the recoat layer 30 is not particularly limited, but from the standpoint that the recoat paint such as stain can be reliably retained, the paint can be prevented from dripping, and the coating can be performed with excellent thickness. , preferably 50 μm or more and 120 μm or less, more preferably 60 μm or more and 110 μm or less, and even more preferably 70 μm or more and 100 μm or less.

《Resin coating》
The recoat layer 30 preferably has a resin coating film on at least part of the surface of the cellulose fibers while maintaining at least part of the voids. The resin coating improves the function of the recoat layer 30 as a stain paint receiving layer. The resin coating film exists on a portion of the cellulose fibers of the recoat layer 30, and by improving the wettability of the cellulose fibers, it is possible to prevent the stain paint from dripping and to provide a coating with an excellent texture. can.

Examples of the resin used as the resin coating film include thermoplastic resins, thermosetting resins and ionizing radiation curable resins. If necessary, the resin used as the resin coating film can be used as a coating composition by adding a curing agent such as a crosslinking agent, a polymerization initiator, a polymerization accelerator, a solvent, a viscosity modifier, an extender pigment, and the like. .

Examples of thermoplastic resins include cellulose derivatives such as ethyl cellulose, cellulose nitrate, cellulose acetate, ethylhydroxyethyl cellulose and cellulose acetate propionate, styrene resins such as polystyrene and polyα-methylstyrene, styrene copolymers, and polymethacrylic acid. Acrylic resins such as methyl, polyethyl methacrylate, polyethyl acrylate, polybutyl acrylate, vinyl polymers such as polyvinyl chloride, polyvinyl acetate, vinyl chloride-vinyl acetate copolymer, polyvinyl butyral, rosin, modified rosin Natural or synthetic resins such as maleic acid resins, rosin-modified phenol resins, rosin ester resins such as polymerized rosin, coumarone resins, vinyltoluene resins, and polyamide resins can be used.

Thermosetting resins include phenol resins, urea resins, diallyl phthalate resins, melamine resins, guanamine resins, unsaturated polyester resins, polyurethane resins, epoxy resins, aminoalkyd resins, melamine-urea cocondensation resins, silicon resins, poly A siloxane resin etc. are mentioned.

As the ionizing radiation-curable resin, a resin conventionally commonly used as an ionizing radiation-curable resin can be used. Acrylate resin can be used. In addition, "(meth)acrylate" means "acrylate or methacrylate".
(Meth)acrylate resins include monomers, oligomers and prepolymers such as urethane (meth)acrylates, acrylic (meth)acrylates, polyester (meth)acrylates and epoxy (meth)acrylates. Among these (meth)acrylate resins, acrylate resins having an acryloyl group such as urethane acrylate, acrylic acrylate, polyester acrylate and epoxy acrylate are preferred from the viewpoint of the balance between adhesion to the heat seal layer and the strength of the coating film. Among them, urethane (meth)acrylate is preferred.
Ionizing radiation means an electromagnetic wave or a charged particle beam that has an energy quantum capable of polymerizing or cross-linking molecules, and usually ultraviolet (UV) or electron beam (EB) is used. Electromagnetic waves such as X-rays and γ-rays, and charged particle beams such as α-rays and ion beams can also be used.

When the ionizing radiation-curable resin is UV-curable, the ionizing radiation-curable resin composition preferably contains additives such as a photopolymerization initiator and a photopolymerization accelerator.
Examples of the photopolymerization initiator include one or more selected from acetophenone, benzophenone, α-hydroxyalkylphenone, Michler's ketone, benzoin, benzyl methyl ketal, benzoyl benzoate, α-acyloxime ester, thioxanthone, and the like.
In addition, the photopolymerization accelerator can reduce polymerization inhibition by air during curing and increase the curing speed. One or more selected types can be mentioned.

On the side of the recoat layer 30 in the thickness direction where the design ink layer 20 is provided, there is a second filling portion in which the binder component A constituting the design ink layer 20 is filled in part of the voids of the cellulose fibers. (not shown). The second filling part ensures the adhesion between the design ink layer 20 and the recoat layer 30 .

The recoat layer 30 is provided with a fibrous portion (not shown) in which at least a part of the surface and voids of the cellulose fibers exist on the side opposite to the surface on which the design ink layer 20 is provided in the thickness direction. The fiber part of the recoat layer 30 can have the recoat paint in the voids and at least a part of the surface of the cellulose fibers by ensuring the inking property of retaining the recoat paint in the voids and surfaces of the cellulose fibers.

《Color Concealing Layer》
As shown in FIG. 2, the recoating decorative sheet 1 preferably has a form in which a colored masking layer 40 is further provided on the substrate 10 side as part of the design ink layer 20 . The colored concealing layer 40 serves as a block layer, and the binder component A of the design ink layer 20 penetrates only into the recoat layer 30, so that the adhesion between the design ink layer 20 and the recoat layer 30 is improved. be able to.

The colored masking layer 40 is provided for the purpose of enhancing the design of the recoating decorative sheet 1 and improving the adhesion between the substrate 10 and the patterned ink layer 20 . The colored masking layer 40 can impart an intended color to the base material 10 to adjust the color of the surface, for example, when the base material 10 has color unevenness. The colored concealing layer 40 is often formed with an opaque color for the purpose of concealing the base material 10, but it can also be formed with a colored transparent color to make use of the pattern of the base material 10. - 特許庁

The colored concealing layer-forming composition used for forming the colored concealing layer 40 is obtained by appropriately mixing coloring components such as pigments and dyes, extender pigments, solvents, stabilizers, plasticizers, catalysts, curing agents, etc. into a binder component. things are used.

Examples of the binder component of the colored concealing layer 40 include thermoplastic resins, thermosetting resins, and ionizing radiation-curable resins. Resin is preferred.
The coloring component of the colored masking layer 40 may be appropriately selected depending on the intended use of the recoating decorative sheet 1 and the color compatibility with the design layer.

[Manufacturing method of decorative sheet for recoating]
The manufacturing method of the recoating decorative sheet 1 of the present invention will be described with reference to the recoating decorative sheet shown in FIG. 1, which is one of preferred embodiments of the recoating decorative sheet of the present invention.
First, a substrate 10 is prepared, and a pattern ink layer 20 is arranged on the substrate 10 by a known printing method such as gravure printing using a pattern ink layer forming composition.
Next, a recoat layer 30 is prepared, and the recoat layer 30 is arranged on the design ink layer 20 arranged by the method described above.
Next, by heating the laminate obtained by laminating the base material 10, the design ink layer 20, and the recoat layer 30 by thermal lamination, the fluidity of the binder component A contained in the design ink layer 20 is increased, and the base material 10 and the recoat layer are heated. A decorative sheet for recoating 1 is manufactured that exerts an anchor effect on each layer 30. - 特許庁
By the above steps, the base material 10, the design ink layer 20, and the recoat layer 30 are laminated in order, and the recoat decorative sheet 1 having good adhesion between the base material 10 and the recoat layer 30 via the design ink layer 20 is obtained. can be manufactured.

The method for manufacturing the decorative sheet for recoating 1 preferably further includes a step of applying the resin coating film-forming composition from the surface side of the recoat layer 30 of the decorative sheet for coating 1 . By including this step, it is possible to manufacture the recoatable decorative sheet 1 having a resin coating film on at least part of the surface of the cellulose fibers while maintaining at least part of the voids in the recoat layer 30 .

As described above, according to the recoatable decorative sheet 1 according to the present embodiment, even if a material that cannot be thermally welded is used for the base material 10 and the recoat layer 30, the base material 10 and the recoat layer 30 can improve the adhesion of.

[Coloring method of decorative sheet for recoating]
The method for coloring the recoatable decorative sheet 1 according to the embodiment of the present invention involves applying a recoat paint to the recoat layer 30 of the recoatable decorative sheet 1 by a general coating method to color the recoat layer 30 . It is.
Since the recoat layer 30 of the recoatable decorative sheet 1 has, on the coated surface side, the voids of the cellulose fibers and the fiber portion that maintains the surface, the voids of the cellulose fibers and the surface retain colorants such as water-based stain paints and oil-based stain paints. It is possible to secure the incarnation to be done. Therefore, the recoatable decorative sheet 1 according to the embodiment of the present invention can be easily colored in an arbitrary color by coating the recoat layer 30 with a coloring agent such as stain.

EXAMPLES Next, the present invention will be described in more detail with reference to examples, but the present invention is not limited by these examples.

[evaluation]
The recoating decorative sheets obtained in Examples and Comparative Examples were evaluated as follows. Table 1 shows the results.

<Adhesion>
The decorative sheets for recoating prepared in Examples and Comparative Examples were cut into a size of 300 mm×300 mm to obtain a test piece for an adhesion test. Adhesion was evaluated by peeling off only the recoat layer from the end of the test piece.
A: The adhesion between the recoat layer and the base material is extremely high and does not peel off (material breaks).
B: The adhesion between the recoat layer and the substrate is high, and almost no peeling occurs. C: The adhesion between the recoat layer and the substrate is moderate, and peeling is difficult. D: The adhesion between the recoat layer and the substrate is high. Low adhesion, peeled off easily

<Colorability>
An oil-based stain coating and a water-based stain coating were applied to the recoat layer side of the decorative sheets for recoating prepared in Examples and Comparative Examples, and the colorability was evaluated.
A: Good coloring with oil-based stain paint and water-based stain paint B: Coloring with oil-based stain paint and water-based stain paint possible C: Coloring with oil-based stain paint and water-based stain paint not possible

(Example 1)
An impregnated paper having a basis weight of 60 g/m ² and a thickness of 61 μm (manufactured by KJ Specialty Paper Co., Ltd., product name “GFN601”) was prepared as a base material. Then, for forming a pattern ink layer containing a 5:5 mass ratio mixture of a urethane resin (glass transition temperature Tg: -45°C) and an acrylic resin (glass transition temperature Tg: 90°C) as a binder component on a substrate. A picture ink layer having a thickness of 4.0 μm was formed on the surface by gravure printing the composition.
Next, a single cellulose material having a basis weight of 16 g/m ² and a thickness of 64.5 μm was prepared as a recoat layer. Then, a recoat layer was placed on the design ink layer placed on the base material.
Next, by heating the laminate obtained by laminating the base material, the design ink layer, and the recoat layer by extrusion lamination (sand lamination), the fluidity of the binder component A contained in the design ink layer is increased, and the base material and the recoat layer are heated. A decorative sheet for recoating was produced that exerts an anchoring effect for each.
Next, a resin coating film-forming composition containing an acrylic polyol resin was applied from the surface side of the recoat layer to form a resin coating film on the recoat layer.
Table 1 shows the evaluation results of the obtained decorative sheet for recoating.

(Example 2)
The composition for forming a patterned ink layer in Example 1 was changed to a composition for forming a patterned ink layer containing an acrylic resin (glass transition temperature Tg: 75°C) as a binder component. I got a makeup sheet. Table 1 shows the evaluation results of the obtained decorative sheet for recoating.

(Example 3)
The composition for forming a picture ink layer in Example 1 was a mixture of vinyl chloride-vinyl acetate copolymer (glass transition temperature Tg: 65°C) and acrylic resin (glass transition temperature Tg: 105°C) in a 5:5 mass ratio. A decorative sheet for recoating of Example 3 was obtained in the same manner as in Example 3, except that the composition for forming a picture ink layer contained as a binder component was used. Table 1 shows the evaluation results of the obtained decorative sheet for recoating.

(Comparative example 1)
Comparative Example 1 was carried out in the same manner as in Example 1 except that the composition for forming a picture ink layer was changed to a composition for forming a picture ink layer containing nitrocellulose/alkyd resin (glass transition temperature Tg: 170°C) as a binder component. A decorative sheet for recoating was obtained. Table 1 shows the evaluation results of the obtained decorative sheet for recoating.

From Table 1, in Examples 1 to 3, the results of adhesion and colorability were good.
On the other hand, in Comparative Example 1, the results of adhesion and colorability were not good. This result is considered to be due to the fact that in Comparative Example 1, the Tg of the patterned ink layer-forming composition contained as a binder component was high, and a sufficient anchoring effect was not obtained.

The decorative sheet for recoating of the present invention maintains the texture of the nonwoven fabric, satisfactorily adheres the paper substrate and the nonwoven fabric, and has good colorability. Interior or exterior materials, window frames, doors, handrails, baseboards, rims, moldings and other fixtures and fixtures, kitchen equipment, furniture or light electrical appliances, OA equipment, etc. cabinet surface decorative board, It is suitably used as a layer constituting an interior or exterior member of a vehicle.

1: Decorative sheet for recoating 10: Paper substrate 20: Design ink layer 30: Recoating layer 40: Colored concealing layer

Claims (5)

a substrate containing paper fibers;
a picture ink layer provided on at least one side of the base material and containing a binder component A having a glass transition temperature of −60° C. or more and 90° C. or less;
A decorative sheet for recoating, comprising: a recoating layer provided on the side of the design ink layer opposite to the substrate, containing cellulose fibers and having voids between the cellulose fibers. 2. The recoatable decorative sheet according to claim 1, wherein the recoat layer has a resin coating film on at least part of the surfaces of the cellulose fibers while maintaining at least part of the voids. 3. The content of the binder component A according to claim 1, wherein the content of the binder component A is 30% by mass or more and 100% by mass or less with respect to all binder components in the composition for forming the pattern ink layer. decorative sheet for recoating. The recoatable decorative sheet according to any one of claims 1 to 3, wherein the binder component A contains at least one selected from the group consisting of acrylic resins, urethane resins and vinyl chloride-vinyl acetate copolymers. The recoatable decorative sheet according to any one of claims 1 to 4, wherein the recoat layer has a colorant in at least part of the voids and the surfaces of the cellulose fibers.

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