JP4486191B2 - Decorative sheet - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a decorative sheet for buildings, vehicles, miscellaneous goods, and the like, and more particularly to a decorative sheet having a light interference color tone and pearly luster.
[0002]
[Prior art]
As a decorative sheet having a light interference color tone or pearly luster, a film having a light interference function (hereinafter abbreviated as a light interference film) subjected to embossing described in JP-A-10-76623, or JP-A-2- Some optical interference films described in Japanese Patent No. 98441 use a fine embossed film as a decorative layer.
[0003]
The surface color tone of the decorative sheet is insufficient in that it expresses the intensity of the light interference color tone because the surface is composed only of fine embosses. In addition, the sheet is decorated by forming a transparent resin layer such as polyvinyl chloride in which small pieces of pearl and iris colors are dispersed and a layer made of pearl pigment or metal powder, and the surface is embossed. However, there is a sheet that emphasizes glossiness and iris color tone, but this sheet has poor light interference color tone and is not rich in decorativeness.
[0004]
[Problems to be solved by the invention]
The conventional decorative sheet having the light interference film laminated as described above has a fine emboss on the surface, so that when the sheet is viewed, the difference between the light interference color tone enhancement part and the attenuation part is expressed. It cannot be said that the optical interference function is effectively expressed. Further, a cosmetic material having a surface containing a pearl pigment or a metal piece in the decorative layer and embossed on the surface has a poor light interference color tone and is hardly said to have a good decorative property.
[0005]
Accordingly, an object of the present invention is to have a light interference film as a design layer, laminate a transparent resin layer on the surface thereof, and apply a specific emboss to the layer, thereby solving the above-mentioned problems and light interference color tone on the entire sheet surface. An object of the present invention is to provide a decorative sheet that can effectively express the strength and weakness.
[0006]
[Means for Solving the Problems]
The inventor of the present invention dry laminates a light interference film on a thermoplastic resin, for example, a colored polyvinyl chloride sheet, and further dry laminates a transparent resin layer on the surface of the light interference film, and then has a fine emboss on the convex portion. As a result of intensive studies on the decorative sheet with large pattern embossing, the present invention has been achieved.
[0007]
That is, in the present invention, a light interference film is laminated on a thermoplastic resin sheet via a printed pattern layer, and a transparent resin layer having a large embossing with an embossing depth of 0.2 to 1.5 mm is further laminated on the surface. There is provided a decorative sheet characterized in that only the convex portions of the emboss have fine embosses having a depth and a pitch of 0.2 mm or less.
[0008]
Further, in the above sheet, spacing to the center of the convex portions adjacent the center of the convex portion of the big embossing (c) to provide a decorative sheet is 1 to 100 mm.
[0009]
The “light interference function” in the present invention means that the color tone gradually changes depending on the viewing angle. The “light interference color tone” means an iris color or a pearl color tone that appears depending on a viewing angle, and a glossy tone thereof. The “large embossing” in the present invention means an embossing pattern in which the distance from the center of the convex portion to the center of another nearest convex portion is 0.5 mm or more.
[0010]
Furthermore, the “pattern” in the present invention means a pattern, a geometric figure, a symbol, a character, and the like, and “embossed in synchronization with the printed pattern and / or the pattern of the light interference film” means, for example, a river For abstract flow patterns such as, embosses that show water currents and sparkles of water, and for patterns such as geometric figures and letters, large embosses with the same shape as the above pattern In the same position, embossing the transparent resin layer means emphasizing the pattern and characters.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Next, the present invention will be described in more detail with reference to preferred embodiments.
As an example of the decorative sheet of the present invention, as schematically shown in cross section in FIG. 1, a thermoplastic resin sheet 1, a light interference film 2, a large emboss (A + B), a fine emboss 4 and / or 4 ′ The applied transparent resin layer 5 is laminated in this order.
[0012]
As the thermoplastic resin sheet 1 in the decorative sheet of the present invention, a polyvinyl chloride (PVC) sheet, a polyolefin sheet, an acrylic resin sheet, a nylon resin sheet, or the like is used. For example, in the case of a PVC sheet, a plasticizer or a stabilizer can be added to a vinyl chloride homopolymer or copolymer, or a blend thereof, and sheeting can be performed by calendar molding or the like. Further, coloring with a white or black pigment capable of effectively exhibiting the function of the light interference film, and an antioxidant, an antistatic agent, a filler, and a flame retardant can be added as necessary.
As thickness of the thermoplastic resin sheet 1, it is about 0.5-50 mm normally, Preferably it is about 1.0-2.0 mm. Here, the thermoplastic sheet 1 may be a single layer or a multilayer of two or more layers, and a base material may be laminated on the back surface or in the middle.
[0013]
The method for applying the printed pattern layer in the decorative sheet of the present invention includes a method of printing on the surface of the thermoplastic resin sheet 1, a method of printing on the back surface of the light interference film, and a film printed on the surface of the thermoplastic resin sheet 1. There are methods such as laminating, and it is possible to give designs such as wood grain, stone grain, geometric patterns, abstract patterns, letters and the like. Gravure printing, screen printing, rotary printing, release paper ink transfer, and the like are used as printing methods for these printed patterns.
[0014]
As the light interference film 2 in the decorative sheet of the present invention, a commercially available one can be used. Such a commercially available optical interference film is made by laminating polyethylene or polyester as a support film for the optical interference layer, and has a total thickness in the range of 1 to 100 μm. For example, a product name “Sunny Rainbow” of Toyo Metallizing Co., Ltd. Any optical interference film can be used without departing from the object of the present invention, such as “Film” and trade name “Aurora Film” of Nakai Kogyo Co., Ltd.
[0015]
Further, as shown in FIG. 2, in order to improve the adhesion between the thermoplastic resin sheet 1 and the optical interference film 2, the thermoplastic resin sheet 1 and the light are interposed between the thermoplastic resin sheet 1 and the optical interference film 2. The adhesive layer 3 can be formed by coating the interference film 2 with a similar resin that can be heat-sealed, or by applying a transparent adhesive such as acrylic, urethane, or epoxy. Furthermore, as shown in FIG. 4, various printed pattern layers 3 as described above can be formed between the thermoplastic resin sheet 1 and the light interference film 2 instead of or in addition to the adhesive layer 3.
[0016]
As the transparent resin layer 5 in the decorative sheet of the present invention, a resin similar to the thermoplastic resin sheet 1 can be used, and an ultraviolet absorber, an antioxidant, an antistatic agent, an antibacterial agent, and the like that do not impair the transparency. Various additives such as fillers and flame retardants can be added. Furthermore, a printed pattern may be given to the surface or back surface side of a transparent resin layer, and the pattern of a light interference film may be partially seen through this transparent resin layer. The thickness of the transparent resin layer is desirably 0.2 to 1.5 mm so that a large embossed depth of 0.2 to 1.5 mm can be formed.
[0017]
Also, when used in areas where wear due to dynamic loads such as walking and casters occurs, especially when used as flooring, floor mats, waist wall materials, and other surface protection materials, wear resistance in forming a transparent resin layer A resin having can be used. When the abrasion-resistant resin is a sheet having a smooth surface, the wear reduction after 1000 rotations using the wear wheel H-22 is 0.2 mm or less in the Taber type wear test in accordance with JIS A1453. Preferably it is 0.1 mm or less. Further, when used in a place where the wear is particularly severe, fine embossing can be applied only to the concave portion to protect the light interference color tone enhancement portion from friction.
[0018]
The embossing to be applied to the transparent resin layer 5 has an emboss depth (b) (FIG. 1) of 0.2 to 1.5 mm, and at least one of the convex portion A or the concave portion B, preferably the convex portion A or the concave portion B. By forming a large pattern emboss (A + B) having a fine emboss 4 'having a shape different from that of the fine emboss 4 and / or 4 having a depth and a pitch of 0.2 mm or less on either one of the convex A and the concave B Depending on the difference in the fine embossing shape or the presence or absence of fine embossing, the intensity of the light interference color appears, and a sheet having a rich decorativeness can be obtained. In other words, when the fine embossing has the same pitch as the light interference color tone, if the depth becomes small, the iris color and the pearl color tone and the gloss thereof decrease. Therefore, by changing the depth of the fine embossing, the fine embossing 4 and 4 The intensity of light interference color can be adjusted. If the depth (b) of the large emboss is less than 0.2 mm, it is insufficient in that the difference in light interference color tone between the convex part A and the concave part B cannot be expressed effectively, while the depth is 1 If it exceeds .5 mm, maintenance such as cleaning becomes difficult to perform, and embossing becomes difficult.
[0019]
As the shape of the large pattern emboss (A + B), an abstract pattern, a geometric figure, a character, or the like can be used, and these shapes can be formed by a heated embossing roll or pressing. For example, when the light interference film 2 and the transparent resin layer 5 are dry-laminated on the colored thermoplastic resin sheet 1 and the large embossing (A + B) having the fine emboss 4 is applied to the convex part A, only the light interference color tone of the convex part A is obtained. A decorative sheet rich in changes in color tone can be obtained by emphasizing the above. In particular, in order to obtain such an effect, the distance (c) (FIG. 1) from the center of the convex portion A to the center of the convex portion A adjacent thereto is 0.5 mm or more in large pattern embossing, preferably 1 to It is desirable to form an emboss pattern that is 50 mm.
[0020]
In the decorative sheet of the present invention, when the embossed shape applied to the transparent resin layer 5 is synchronized with the pattern printed on the thermoplastic resin sheet 1 and / or the pattern of the light interference film, the light interference color tone is more effectively exhibited. In addition, the intensity of the light interference color tone can be further enhanced, which is desirable. For example, when the pattern is an abstract flow pattern, a large emboss (A + B) that represents a water flow is applied, and a fine emboss 4 is applied to the convex portion A of the large pattern emboss (A + B) to enhance the light interference color tone. The sparkle of water appears, and the river can be expressed with the whole sheet. Further, when the pattern is a geometrical figure or a character, large embossing (A + B) of the same pattern is applied at the same position and in the same shape as the base pattern, and the fine embossing of the convex part A and / or the concave part B is performed. By changing the depth (a) of FIG. 1 (FIG. 1), it is possible to express a pattern such as a geometric figure or a character more emphasized.
[0021]
The decorative sheet of the present invention is desirable because a higher-class feeling is achieved even when a metal piece such as a gold foil or a silver foil, a glossy inorganic filler or a pigment is added to the transparent resin layer to be embossed. In addition, the decorative sheet of the present invention cannot be confirmed from a different viewing angle, for example, from a distance, but when it comes close to the decorative sheet, it is necessary to check characters indicating cautions, warnings, guidance, advertisements, and light interference patterns. Can be able to.
[0022]
The decorative sheet of the present invention can improve the impact resistance by laminating a foam sheet on the back side. Moreover, about a dimension, it can be made into the long sheet | seat shape whose tile shape or width | variety is 500-2500 mm in one side.
[0023]
【Example】
Next, embodiments of the present invention will be specifically described with reference to the drawings.
Reference Example 1 (See FIGS. 2 and 3)
A vinyl chloride resin sheet 1 having a thickness of 1.4 mm that is highly filled with a filler and a vinyl chloride resin sheet 3 having a thickness of 0.2 mm that is colored white and black by kneading the pigment are laminated by a calendering method. Next, the optical interference film 2 having a thickness of 18 μm and the colorless thickness having a thickness of 0.4 mm in which the wear reduction after 1000 rotations using the wear wheel H-22 in the Taber abrasion test according to JIS A1453 is 0.05 mm or less. A transparent vinyl chloride resin sheet 5 is laminated by a heat press at 185 ° C., and at the same time, only the convex part A has a fine embossing depth 4 (a) of 0.1 mm, an embossing depth (b) 0.9 mm, a convexity A circle with a diameter of 20 mm of the portion A, and a large emboss (A + B) with a distance (c) from the center of the protrusion A to the center of the adjacent protrusion A of 25 mm is given, and the white and black of this embodiment A decorative sheet (1) was produced. When the colored vinyl chloride resin is white, the obtained decorative sheet has a deep pearl luster of the convex portion A of the large emboss, and when it is black, the iris color tone is emphasized. It was a wear-resistant sheet with rich decoration.
[0024]
Example 1 (see FIGS. 4 and 5)
A polyolefin resin sheet 1 having a thickness of 1.4 mm and highly filled with a filler, and a polyolefin resin sheet 3 having a white 7 and amber 8 flow pattern printed on the surface are laminated by a calendar method. Next, the optical interference film 2 based on a 20 μm thick lateral pattern and a colorless and transparent polyolefin sheet 5 having a thickness of 0.4 mm are laminated by a heat press at 185 ° C., and at the same time, the emboss depth (a) 2 10 to 10 μm of fine emboss 4 and the depth (b) of the large pattern emboss is 0.5 to 0.8 mm, and the center interval (c) between two adjacent protrusions A is 0.5 to 2 mm. The decorative sheet (2) of the present example was produced by applying a large emboss which is a flow pattern. The resulting decorative sheet was a decorative sheet in which the intensity of light interference color tone appeared on the convex part A of the large emboss, and the color tone of the white part and the amber color part enhanced the contrast of the light interference color tone, and the flow of the river could be imaged. .
[0025]
【The invention's effect】
As described above, the decorative sheet of the present invention is obtained by laminating a light interference film on a thermoplastic resin sheet through a printed pattern layer , and further, on the surface of the light interference film, a large emboss having only a fine emboss on a convex portion. By laminating the applied transparent resin layer, it is possible to obtain a decorative sheet having a light interference color tone and pearly luster. Further, by synchronizing the pattern applied to the thermoplastic resin sheet and / or the pattern of the light interference film and the embossed pattern applied to the transparent resin layer, the intensity of the light interference color tone can be expressed more effectively.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a decorative sheet of a reference example .
2 is a cross-sectional view of a decorative sheet in Reference Example 1. FIG.
FIG. 3 is a plan view of FIG. 2;
4 is a cross-sectional view of a decorative sheet in Example 1. FIG.
FIG. 5 is a plan view of FIG. 4;
6 is an enlarged plan view of a portion X in FIG.
[Explanation of symbols]
1: The thermoplastic resin sheet 2: optical interference film 3: Printing pattern layer 4, 4 ': microembossed 5: transparent resin layer A + B: Large Embossed A: protrusions B: recess

Claims (2)

A film having a light interference function is laminated on a thermoplastic resin sheet via a printed pattern layer, and a transparent resin layer having a large embossing with an embossing depth of 0.2 to 1.5 mm is further laminated on the surface, and the embossing is performed. A decorative sheet characterized by having fine embossments having a depth and a pitch of 0.2 mm or less only on the convex portions of.   The decorative sheet according to claim 1, wherein an interval from the center of the convex portion of the large pattern emboss to the center of the adjacent convex portion is 1 to 100 mm.

Images