JPH06184952A - Sueded decorative sheet and its production - Google Patents

Abstract

PURPOSE:To obtain a sueded decorative sheet provided with a design having good touch and excellent delustering effects such as a suede imparted thereto and a method for producing the decorative sheet excellent in operating efficiency. CONSTITUTION:This sueded decorative sheet is provided with a resin layer 2, having >=50mum thickness and obtained by adding about 0.5-100 pts.wt. bead pigment 3 having 0.5-200mum particle diameter distribution and 10-80mum mode particle diameter to 100 pts.wt. thermoplastic resin, kneading the bead pigment therein, forming the resultant thermoplastic resin into the form of a sheet and further shaping an uneven pattern 4 having 0.1-100mum central line average height (Ra) specified by JIS-B-0610 and 0.1-30% surface gloss value (60% incidence) measured by a method for measuring the mirror surface glossiness according to JIS-Z-8741 on the surface thereof by using an embossing plate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative sheet used for decorating a surface in a matte state such as suede.

[0002]

2. Description of the Related Art Generally, the surface of such products is formed into a matte shape in a wide range of fields such as furniture, home appliances, and building materials. In recent years, however, super matte (suede-like) such as suede has been formed. It is preferred to impart a surface to the product. There are various methods for forming a suede-like matte surface on these products. Among them, a so-called suede-like decorative sheet having a suede-like surface layer previously formed on the surface of a base material sheet or the like is used as a product. The method of sticking to the surface of the product is preferred because it can give a suede-like surface to the product by a simple operation of simply sticking to the surface of various products.

Conventionally, as the above-mentioned suede-like decorative sheet, a sheet having a matte layer formed on the surface side by applying a coating material containing a bead pigment is used.
The bead pigment is a fine powder of pigment dispersed in a synthetic resin to form particles, and by adding the bead pigment to a coating material, the matte effect of the article to be coated becomes high, and from which direction Even if you see it, you can get a matte surface,
It is used as a delustering agent to express suede-like delustering.

[0004]

However, in the conventional suede-like decorative sheet as described above, a coarse granular bead pigment is dispersed in a vehicle, which is coated on a base material sheet or the like to have a matte surface. Since the layer is formed, there is a problem that the bead pigment separates and settles during coating, and the coating film applied on the surface of the base material sheet is as thin as a few μm to a few μm. There was a problem of poor workability in that uneven glossiness was likely to occur and a uniform and beautiful matte surface could not be obtained. Further, in order to obtain a sufficient gloss, it is necessary to dilute a coating material to which such a bead pigment is added with a solvent having a relatively low volatility such as xylol and to dry it at a high temperature of 80 ° C. or higher. Therefore, for example, when a base material sheet made of a general-purpose thermoplastic resin such as polyvinyl chloride is used to apply a coating material containing a bead pigment to the base material sheet, the base material sheet is heated by the heat and the solvent during coating. The material sheet may be deteriorated such as whitening, swelling, or deformation such as sagging or warping.

On the other hand, in order to solve such a problem,
For example, a coating material to which a bead pigment is added is once applied to a heat-resistant and solvent-resistant film such as biaxially oriented polyethylene terephthalate to form a film, which is transferred to a thermoplastic resin base sheet and matted on the base sheet. A method has been proposed in which a layer is formed to obtain a suede-like decorative sheet (Japanese Patent Laid-Open No. HEI-2).
-26800, JP-A-2-52796).

However, in such a method, although there is no possibility that the base sheet is deteriorated, the problem that the matte layer formed on the surface of the decorative sheet tends to have uneven gloss is not sufficiently solved.

The present invention has been made to solve the above-mentioned drawbacks of the prior art, and is a suede-like decorative sheet provided with a design having a good tactile feel such as suede and an excellent matting effect, and the decorative sheet. It is an object of the present invention to provide a manufacturing method having excellent workability.

[0008]

The suede-like decorative sheet of the present invention has a particle size distribution of 0.5 μm to 200 μm and a most frequent particle size of 10 μm to 80 with respect to 100 parts by weight of the thermoplastic resin.
0.5 parts by weight to 100 parts by weight of a bead pigment having a particle diameter of 0.1 μm, and a center line average roughness (Ra) defined by JIS-B-0610 of 0.1 μm to 100 μm, and JIS-Z-8741. The surface gloss value (incident at 60 °) measured by the specular glossiness measuring method according to
It is characterized by having at least a resin layer on the surface of which 30% fine matte unevenness is formed.

In the method for producing a suede-like decorative sheet of the present invention, the particle size distribution is 0.5 μm to 200 μm and the most frequent particle size is 10 μm to 80 with respect to 100 parts by weight of the thermoplastic resin.
A composition obtained by adding 0.5 to 100 parts by weight of a bead pigment of μm is formed into a film to form a resin layer, and then the resin layer is heated and softened while being pressed by an embossing plate, and JIS.
-Center line average roughness (R
a) is 0.1 μm to 100 μm, and JIS-Z
It is characterized in that matte fine irregularities having a surface gloss value (incident at 60 °) of 0.1% to 30% measured by a specular glossiness measuring method according to -8741 are applied to the surface of the resin layer. .

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings. The drawings are cross-sectional views showing a suede-like decorative sheet 1 of the present invention.

The decorative sheet 1 of the present invention is a resin obtained by forming a thermoplastic resin resin into which a bead pigment 3 has been added and kneaded into a sheet, and then forming an uneven pattern 4 on the surface thereof using an embossing plate. It has at least layer 2. As shown in FIG. 2, the decorative sheet 1 of the present invention may have a structure in which the resin layer 2 is laminated on the base material sheet 5 if necessary.

The bead pigment 3 used in the present invention is a pigment composed of spherical resin fine particles, and optionally contains a pigment or a coloring agent such as a dye therein.
Particularly, as a material having excellent matting effect and scratch resistance, for example, fine powder surfaces of usual pigments such as Fe ₂ O ₃ , TiO ₂ , CaCO ₃ , and quinacridone are treated with polyurethane, acrylic, epoxy, polyester, nylon, fluorine. resin,
A flexible resin such as vinyl chloride-vinyl acetate copolymer, or a dispersion obtained by adding a plasticizer, a stabilizer, a surfactant, etc. to the resin as required, is formed into a spherical shape. Alternatively, a pigment formed by coating the periphery of the above-mentioned pigment with the composition to form a granule may be used.

The bead pigment 3 has a particle size distribution of 0.5 μm to 200 μm and a most frequent particle size of 10.
Those having a size of μm to 80 μm are used. In addition, as a more preferable particle diameter, the particle diameter distribution is 1 μm to 60 μm, and the most frequent particle diameter is 10 μm to 30 μm.

The addition amount of the bead pigment 3 kneaded into the thermoplastic resin depends on the degree of the matte design of the resin layer 2 obtained.
Alternatively, in consideration of the surface properties of the thermoplastic resin, the amount is 0.5 to 100 parts by weight, and more preferably 1 to 30 parts by weight, relative to 100 parts by weight of the thermoplastic resin. At this time,
If the amount added is 0.5 parts by weight or less, suede-like gloss and touch cannot be sufficiently obtained. If the amount added is 100 parts by weight or more, the resin layer 2 formed by forming the thermoplastic resin into a film may become brittle.

Bead pigments 3 added to thermoplastics
Is not limited to one color, and two or more colors can be used. Also,
When the bead pigments 3 of two or more colors are used, the particle size distribution and the most frequent particle size of the bead pigments 3 can be different for each color. For example, as shown in FIG. 2, the bead pigment 3 of the resin layer 2 is composed of three different colors such as red (3A), yellow (3b) and black (3c), and the red bead pigment (3A) is used. Use the one with the most frequent particle size for yellow (3
b) and black (3c) bead pigments 3 having the most frequent particle size are used. When combined in this way, in the matte layer 4, the three-dimensional effect is obtained between the red bead pigment (3A): the yellow bead pigment (3b) or the red bead pigment (3A): the black bead pigment (3c). can get.

As the thermoplastic resin in which the bead pigment 3 is kneaded, a thermoplastic resin that can be formed into a film as a solid sheet and is suitable for embossing is appropriately selected. As such a thermoplastic resin, for example, polyvinyl chloride, a copolymer of vinyl chloride and ethylene, vinyl acetate, or an acrylic ester, poly (meth) acrylic ester,
Examples thereof include polyethylene, polypropylene, polystyrene, acrylonitrile-styrene copolymer, acrylonitrile-butadiene-styrene copolymer (ABS resin) and the like.

In the present invention, the uneven pattern 4 formed on the surface of the decorative sheet 1 has a center line average roughness (Ra) defined by JIS-B-0610 of 0.1 μm or more.
100 μm, more preferably 1 μm to 10 μm,
Moreover, the surface gloss value (60 ° incidence) measured by the specular gloss measurement method according to JIS-Z-8741 is 0.1%.
-30%, more preferably 0.1% -3.0%.

Next, a method for producing the suede-like decorative sheet of the present invention will be described.

To carry out the production method of the present invention, first, 0.5 to 100 parts by weight of the bead pigment 3 as described above is added to 100 parts by weight of the thermoplastic resin in the thermoplastic resin.
More preferably, 1 part by weight to 30 parts by weight is added and sufficiently kneaded, and then the above resin is formed into a resin layer 2 by an appropriate method such as a calendar method, an extrusion method, a casting method (including a sol coating method). Form. The resin layer 2 is 5
The thickness is preferably 0 μm or more.

At this time, if the thickness of the resin layer 2 is less than 50 μm, uneven glossiness due to poor dispersion of the bead pigment 3 in the resin becomes conspicuous. Further, since the bead pigment 3 of coarse particles is added, the strength of the sheet-shaped resin layer 2 becomes insufficient, and the resin layer 2 is cut during processing such as embossing described below or printing performed as necessary. The resin layer 2 will be damaged or stretched significantly. Therefore, in such a case, as will be described later, the resin layer 2 is laminated on another base material sheet, and then embossing or the like is performed. On the other hand, the upper limit of the thickness of the resin layer 2 is the sheet-shaped resin layer 2
Although it depends on the method of film formation or post-processing, the film thickness of about 500 μm is preferable when the resin layer 2 formed into a belt-like sheet is wound up on a roll or the like and processed.

Next, an uneven pattern 4 is imprinted on the surface of the resin layer 2 thus obtained. As a method of imprinting the concavo-convex pattern 4, various known embossing methods are used. These are methods for shaping the uneven shape of the embossing plate on the surface of the target material by heat or pressure, and a press embossing machine such as a flat plate press or a roll embossing machine can be used. The roll embossing method is a method in which a concavo-convex pattern of a cylindrical embossing plate is shaped by heat and pressure.

The heating and pressurizing conditions of the material differ depending on the thermocompressive behavior of the thermoplastic resin, but in the case of a normal thermoplastic resin, the material is heated to an appropriate temperature between the softening point or heat distortion temperature and the melting point or melting temperature. Then, the embossing plate is pressed and shaped, and cooled to fix the shape. As a heating method, known methods such as infrared irradiation, warm air blowing, heat conduction from a heating roller, and dielectric heating are used.

It is sufficient that the embossing roll has an uneven shape corresponding to the desired uneven pattern 4 to be provided on the surface of the decorative sheet 1 as described above. Instead of the embossing roll, an embossing plate (planographic printing plate) is used. ) May be used. Further, as the shape of the embossing diaphragm, various known irregularities,
A glossy one can be used. For example, a copy of a natural uneven shape such as a grain or a satin finish, various matte surfaces, etc. may be mentioned.

When manufacturing the decorative sheet 1,
A base material sheet 5 is prepared, and the base material sheet 5 and the resin layer 2 formed into a sheet are laminated and integrated by doubling embossing, and at the same time an uneven pattern 4 is formed on the surface of the resin layer 2 to form an uneven pattern. The decorative sheet 1 as shown in FIG. 2 in which the resin layer 2 having the surface 4 formed thereon is laminated on the base material sheet 5 can also be manufactured as necessary. Alternatively, the concavo-convex pattern 4 may be formed on the surface of the resin layer 2 by embossing after the resin layer 2 is formed on the substrate sheet 5 by a known coating method or transfer printing. With such a method, the thin resin layer 2 having a thickness of less than 50 μm can be embossed without fear of cutting.

The doubling emboss means that the resin layer 2 and the base material sheet 5 are sandwiched by the embossing roll and the pressing roll plate so that the embossing roll abuts on the resin layer 2 side, and heat and pressure are applied. A method of forming the concavo-convex pattern 4 on the surface of the resin layer 2 on the embossing roll side at the same time when the resin layer 2 and the base material sheet 5 are fused and bonded to each other.

The material of the base sheet 5 laminated and integrated with the resin layer 2 by doubling embossing is a resin that can be heat-sealed with the resin layer 2, for example, the same material as the thermoplastic resin forming the resin layer 2. Can be mentioned. If necessary, the resin layer 2
When the base sheet 5 and the base sheet 5 are laminated, the design property is further improved by kneading the base sheet 5 with a pigment such as a bright pigment or a coloring pigment.

The doubling embossing processing conditions can be appropriately determined according to the material of the thermoplastic resin used. For example, when vinyl chloride is used as the thermoplastic resin, the temperature of the embossing plate is 30 to 70 ° C and the temperature of the thermoplastic resin is 120 to 170 ° C.

Further, a decorative layer can be formed on the base sheet 5 if necessary. The decorative layer is provided in order to improve the decorative properties of the decorative sheet 1, and is composed of a pattern layer 6, a metal vapor deposition layer, etc. The pattern layer 6 is a conventional printing ink, for example, a commonly used printing ink. ,
On the surface of the base material sheet 5, a desired pattern such as a picture, a pattern, a design or the entire surface is formed by solid printing. Printing methods include gravure, silk screen, and offset. Further, the decorative layer is not limited to the pattern layer 6 on which a pattern, a pattern, a pattern, etc. are formed by a normal ink, and a solid printing layer, a metal vapor deposition layer, a partial metal vapor deposition layer or the like, or two of these layers. You may form from a layer or more.

Although not shown in the drawing, a concealing layer may be provided to conceal the surface of the base material sheet 5 under the resin layer 2. The concealing layer can form a matte layer or a decorative layer on the surface without being affected by the material of the base sheet 5. The hiding layer can be formed by printing using an ink or the like in which a pigment having a hiding property such as titanium oxide is added to the vehicle.

Further, a colored or colorless transparent transparent protective layer 7 can be provided on the surface of the decorative sheet 1 if necessary. As the transparent protective layer 7, a transparent synthetic resin film may be heat-sealed or adhered, or a transparent synthetic resin paint may be applied. The type of resin is appropriately selected depending on the required surface physical properties, but particularly when abrasion resistance and stain resistance are required, for example, urethane acrylate, polyester acrylate, ionizing radiation curable resin made of epoxy acrylate, etc., Thermosetting resins such as epoxy, polyurethane and polysiloxane, fluororesins such as polytetrafluoroethylene and polyvinylidene fluoride, and when weather resistance is required, for example, fluororesins such as tetrafluoroethylene and polyvinylidene fluoride, Examples thereof include acrylic resins such as polymethylmethacrylate, thermosetting resins such as polysiloxane, and various additives may be added to these resins as necessary. The transparent protective layer 7 must be provided before embossing the surface of the resin layer 2. Also,
The thickness of the transparent protective layer 7 is preferably set to 0.5 μm to 10 μm so that the bead pigment 3 contained in the resin layer 2 does not impair the tactile sensation such as suede on the surface of the decorative sheet 1.

The decorative sheet 1 of the present invention is provided with a bead pigment in the resin layer 2 to impart a matte design, and is further included in the resin layer 2 by imprinting an uneven pattern 4 on the surface of the resin layer 2. In combination with the bead pigment 3 thus produced, a suede-like feel and a matting effect can be sufficiently obtained. In addition, gloss unevenness, color unevenness, etc. are significantly reduced as compared with the conventional coating method and transfer method alone.

Further, in the method for producing the decorative sheet of the present invention, since the thermoplastic resin in which the bead pigment 3 is kneaded is formed into a sheet, there is no risk of uneven gloss due to defective dispersion of the bead pigment. Furthermore, when the resin layer 2 which is a matte layer is laminated on the base material sheet 5 as required, the base material sheet 5 is not deteriorated by heat or a solvent because it is laminated by doubling embossing.

When using the suede-like decorative sheet 1 of the present invention, other means such as building materials and home electric appliances can be obtained by applying an adhesive agent or the like to the back surface of the decorative sheet 1 and bonding the same. Used by stacking on the surface of the product. The decorative sheet 1 of the present invention can also be used as the adhesive decorative sheet 1 by laminating it with a release base material 9 such as a paper separator via the adhesive layer 8.

The present invention will be described in more detail by showing specific examples. Example 1 Colored paste-like polyvinyl chloride [Band Chemistry: BWN blended] with urethane black bead pigment (a) having an average particle size of 20 μm and a most frequent particle size of 20 μm and an average particle size of 20 μm, the most frequent particle size. 20 parts by weight of a mixture of a urethane white bead pigment (b) having a particle size of 20 μm (manufactured by Dainichiseika Kogyo Co., Ltd .: Labcorol) at a ratio of a: b = 30: 70 was added, and the sol-cast method The polyvinyl chloride is formed into a sheet to produce a polyvinyl chloride sheet 2 having a thickness of 0.15 mm. After that, the sheet 2
Is heated to 150 degrees and embossed [Maruishi vinyl: satin 2
No.] is used to emboss the surface and Ra = 1
A decorative sheet 1 having a 4 μm surface gloss value (incident at 60 °) = 15% and a satin textured pattern 4 formed on the surface thereof was obtained.

Example 2 20 parts by weight of the same mixture of the bead pigment (a) as in Example 1 was added to uncolored paste-like polyvinyl chloride, and the above-mentioned polyvinyl chloride was prepared by the sol casting method. A vinyl chloride film is formed into a sheet to produce a polyvinyl chloride sheet 2 having a thickness of 0.09 mm. Thereafter, the sheet 2 and the colored polyvinyl chloride sheet (BWN blend, 0.06 mm) 5 are subjected to doubling embossing with the embossing plate used in Example 1 to form an uneven pattern 4 similar to that in Example 1 on the surface. A decorative sheet 1 was obtained.

[Example 3] An abstract pattern is printed on a colored paste-like polyvinyl chloride with a gravure roll to form a base sheet 5, and the base sheet 5 and the polychlorinated product prepared in Example 2 are used. The vinyl sheet 2 was subjected to doubling embossing with the embossing plate used in Example 1 to obtain a decorative sheet 1 having the same concavo-convex pattern 4 as that of Example 1 on the surface.

Example 4 On the polyvinyl chloride sheet 2 produced in Examples 1 to 3, a silicon acrylic resin [OP-3] 7 manufactured by Showa Ink Co., Ltd. was coated at 2 μm / dry by a gravure reverse method. Thereafter, embossing was performed by the same method as in each of the examples to obtain the decorative sheets 1 having the concavo-convex pattern 4 formed on the surface thereof.

[Example 5] Paper separator [Oji Kako:
OKC IIONC] 9 is coated with a pressure sensitive adhesive [Soken Kagaku: SK Dyne 1307M] 8 at 40 g / m ² · dry, and laminated on the back side of the decorative sheets obtained in Examples 1 to 4 to obtain adhesive decorative sheet 1. Obtained.

In all cases, the decorative sheets 1 obtained in Examples 1 to 5 did not cause uneven gloss due to poor dispersion of the bead pigment 3 when the resin layer 2 was formed, and had an excellent suede-like touch and delustering. The effect was obtained.

In particular, the decorative sheet 1 obtained in Example 4 was excellent in abrasion resistance, stain resistance and the like.

[0041]

As described above, according to the present invention, the excellent matte state such as suede due to the bead pigment contained in the thermoplastic resin and the concavo-convex pattern formed on the surface of the decorative sheet are combined with each other. Compared with the toning and makeup sheet, more excellent suede-like touch and matte effect can be obtained. Further, according to the method of the present invention, since the thermoplastic resin to which the bead pigment has been added is formed into a sheet, it is possible to prevent the occurrence of uneven gloss due to defective dispersion of the bead pigment.

Further, according to the method of the present invention, a resin layer to be a matte layer is formed by forming a thermoplastic resin containing a bead pigment into a sheet, so that a coating material containing a bead pigment is applied to a base sheet. The problem of deterioration of the base sheet does not occur unlike the conventional method of coating to form a matte layer.

The suede-like decorative sheet of the present invention can easily impart the above-mentioned excellent suede-like design to various product surfaces by a simple operation of simply pasting the decorative sheet.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of a suede-like decorative sheet of the present invention.

FIG. 2 is a cross-sectional view showing another example of the suede-like decorative sheet of the present invention.

FIG. 3 is a cross-sectional view showing another example of the suede-like decorative sheet of the present invention.

[Explanation of symbols]

 1 Decorative sheet 2 Resin layer 3 Bead pigment 4 Concavo-convex pattern

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Claims (2)

[Claims] 1. A particle size distribution of 0.5 μm to 200 μm and a most frequent particle size of 10 μm to 8 with respect to 100 parts by weight of a thermoplastic resin.
0.5 to 100 parts by weight of a 0 μm bead pigment is contained, and the center line average roughness (Ra) defined by JIS-B-0610 is 0.1 to 100 μm, and JIS-Z-8741. The surface gloss value (incident at 60 °) measured by the specular glossiness measuring method according to
A suede-like decorative sheet comprising at least a resin layer having 30% of matte fine irregularities formed on the surface thereof. 2. A particle size distribution of 0.5 μm to 200 μm and a most frequent particle size of 10 μm to 8 with respect to 100 parts by weight of the thermoplastic resin.
A composition containing 0.5 to 100 parts by weight of a 0 μm bead pigment is formed into a film to form a resin layer, and then the resin layer is heated and softened while being pressed by an embossing plate to obtain a JI film.
Center line average roughness (R
a) is 0.1 μm to 100 μm, and JIS-Z
It is characterized in that matte fine irregularities having a surface gloss value (incident at 60 °) of 0.1% to 30% measured by a specular glossiness measuring method according to -8741 are applied to the surface of the resin layer. Manufacturing method of suede-like decorative sheet.