JPH05309811A - Brightening decorative sheet and manufacture thereof - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a glittering decorative sheet having a high-quality feeling, a high-grade feeling, and a variety of changes, and a method for manufacturing the same. [Structure] Beads B having a particle size of 800 μm or less are held by at least two adjacent convex portions of the irregularities formed on the surface side of the synthetic resin layer 1 formed on the substrate surface P, and the beads are It has a portion in which at least 10% is embedded in the height direction from the bottom side of B. Synthetic resin layers 11, 12, and 13 are formed on the base material surface P, beads B having a particle diameter of 800 μm or less are dispersed on the synthetic resin layer 13, and then mechanical embossing is performed. A heat treatment may be performed before the mechanical embossing. By the mechanical embossing or the mechanical embossing after the heat treatment, the beads B exhibit various embedding modes and become a decorative sheet having a smoky silver tone glittering feeling without glare.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a glittering decorative sheet and a method for producing the same, and more specifically, it imparts a high-class feeling and a change to a dull glitter by fine beads attached to the surface layer side. The present invention relates to a rich glittering decorative sheet and a method for manufacturing the sheet.

[0002]

2. Description of the Related Art Conventionally, construction (ceiling materials, wall materials, floor materials, etc.),
As a decorative sheet used for furniture, vehicles, electric appliances, footwear, bags, etc., a design sheet represented by gravure printing, rotary screen printing, embossing, etc. is mainly used.

For the purpose of increasing the decorative effect, transparent glass beads are attached to the entire surface of the print layer as described above to change the appearance of the print, or the spherical reflection of the glass beads on the surface is performed. There is also known a decorative sheet that is devised such as to have a glittering property.

Further, a decorative sheet is also known in which a transparent layer is laminated on the entire surface of the print layer as described above, and the viewer is given an illusion that the print layer exists at a high depth. ing.

[0005]

However, in the above-mentioned decorative sheet to which the glass beads are attached, since the glass beads which are transparent spheres are simply attached to the entire surface, the appearance is monotonous. Not only the effect is poor, but the brightness is high (in other words, there is "glare"),
It has a strong palatability and lacks luxury.

On the other hand, the decorative sheet having the above-mentioned transparent layer laminated, which has been widely put into practical use, has no change in the luster and is compared with a sheet to which glass beads are attached.
The appearance is unchanged and the decorative effect is far poorer.

In consideration of the above points, the present invention solves the problems of strength and adhesiveness, and at the same time suppresses the brightness to enhance the high-class feeling, and at the same time, improves the decorative effect by changing the glitter. Another object of the present invention is to provide a decorative sheet and a method for manufacturing the sheet.

[0008]

Means for Solving the Problems The inventors of the present invention conducted extensive research to achieve the above object, and found that beads were retained on adjacent convex portions of the irregularities formed on the surface side of the synthetic resin layer. In addition, when at least 10% of the size in the height direction is embedded from the bottom side of the beads, the glitter of the beads can be suppressed, and the glitter varies depending on the viewing angle. It is possible to obtain a variety of decorative effects, and mechanical embossing is extremely excellent for achieving this specific holding state. Simply penetrates into the surface of the synthetic resin layer, as shown in FIG.
It was thought that only the holding state as shown in (e) was obtained, but according to the research by the present inventor, surprisingly, for example, FIG.
It has been found that a part in which beads are embedded also occurs in the state as shown in (a).

The present invention is based on the above findings (1): the beads are held by at least two adjacent convex portions of the irregularities formed on the surface side of the synthetic resin layer, and the bottom portion of the beads. A glittering decorative sheet, characterized in that at least 10% in the height direction from the side has a portion embedded in a valley formed by the convex portion, and (2) a synthetic resin layer A method for producing a glittering decorative sheet, characterized in that beads having a particle diameter of 800 μm or less are directly sprayed on the above or through an adhesive, and then, if necessary, heat treatment is performed, and then mechanical embossing is performed. , Is the gist.

In the present invention, as the beads to be held on the synthetic resin layer, synthetic resin beads, glass beads and the like can be used, but they have high strength and good adhesiveness to the synthetic resin layer for holding the beads. Synthetic resin beads such as vinyl chloride resin, ester resin, acrylic resin, styrene resin, olefin resin are preferable.

The beads have a particle size of 800 μm or less, preferably 100 to 600 μm in average particle size. If the diameter of the beads is too large, it will be related to the thickness of the synthetic resin layer, but in general, the amount of protrusion to the surface of the sheet will be too large, and the beads will be attached at the time of manufacturing the sheet or on the wall surface, ceiling surface, etc. During work, or after manufacturing or pasting work, the surface of the sheet is likely to come off due to contact or friction, and if it is too small, it is difficult to handle and it becomes difficult to manufacture the sheet of the present invention.

The beads may be transparent or semi-transparent, non-colored or arbitrarily colored, and may have various shapes such as a sphere, an ellipsoid, a polyhedron, and a pellet.

As the synthetic resin layer for holding the beads, a synthetic resin or the like used for covering a base material or forming a pattern layer in a usual decorative sheet can be used. Those having adhesiveness to the beads to be held are particularly preferable. Specific examples thereof include vinyl chloride resin, vinyl acetate resin, vinyl chloride-vinyl acetate copolymer, and acrylic resin.

The above-mentioned synthetic resin may contain a foaming agent which is usually used as a foaming agent for the synthetic resin, and if necessary, a coloring agent which is usually used for the synthetic resin and a stabilizer. It may contain agents, plasticizers, fillers and the like.

The above-mentioned synthetic resin layer may be formed of a single layer or a plurality of layers. Further, the synthetic resin layer may be formed on a base material such as paper, woven cloth, non-woven cloth, knitted cloth, synthetic resin sheet, or composite material thereof. Further, the base material may have various properties such as flame retardancy depending on the application.

The thickness of the synthetic resin layer is not particularly limited, and the thickness cannot be specified depending on the purpose and method of forming the layer (that is, when the layer is formed as an uneven pattern layer). , Or in the case where the layer is formed by a rotary screen or a gravure method, etc., the thickness of the layer is partially different), but from the bottom side of the beads embedded on the layer facing the synthetic resin layer. It goes without saying that a thickness of at least 10% or more in the height direction is required to be embedded.

The synthetic resin layer may be transparent, semi-transparent or opaque. When the surface of the synthetic resin layer is subjected to glitter printing or the like, a synergistic effect with the glitter of the beads is obtained. It is possible to bring about a decorative effect and enhance the decorative effect. Further, when the synthetic resin forming the synthetic resin layer contains a foaming agent, printing is performed with a printing ink containing a foaming inhibitor which is usually used as a chemical agent for suppressing the foaming of the foaming agent. You can also When the synthetic resin layer is formed of a plurality of layers, the entire layer may be unified in any one mode (transparent, semitransparent, opaque, foamed, non-foamed, colored, uncolored, etc.). These modes may be variously changed for each layer.

In the glittering decorative sheet of the present invention, the beads are held by at least two adjacent convex portions of irregularities formed on the surface side of the synthetic resin layer, and the synthetic resin of the beads. It has a portion in which at least 10% of the dimension in the height direction is embedded from the bottom side opposite to the layer.

This embedding means, for example, when the bottom of the bead B is in contact with the synthetic resin layer 1 as shown in FIG. 1 (a), the bottom is in contact with it as shown in FIG. 1 (b). Refers to cases such as no case. Further, in the case of beads B ′ having a shape such as an ellipsoidal sphere or a pellet, the case as shown in FIGS. 2A and 2B is indicated. 2 (a) and 2 (b) are shown in FIGS. 1 (a) and 1 (b).
Therefore, the description thereof will be omitted.

In the present invention, in any of the embedding states shown in FIGS. 1 (a), 1 (b) or FIGS. 2 (a), 2 (b), the beads are raised from the bottom side facing the synthetic resin layer. At least 10% in the dimension in the depth direction (in FIGS. 1 (a) and 1 (b), the dimension of h is at least 10% with respect to the entire height H of the bead B (diameter when the bead B is a sphere)). Is embedded.

When the embedding amount is in the above range, the beads in the glittering decorative sheet of the present invention will not be easily peeled off, and a good adhesion state of the beads can be obtained. ), (B) or FIG. 2 (a),
In the state of (b), the light incident through the bead causes complicated refraction and refraction due to the contact slope between the synthetic resin layer and the bead and the void portion between the bead and the synthetic resin layer in FIG. 1 (b) or FIG. 2 (b). It causes reflection and emits different brilliance depending on the degree of embedding of the beads and the viewing angle, and is far more varied and highly decorative as compared with the case where the beads are simply attached. Moreover, since the light entering through the beads is not reflected by the embedding state as described above, there is no glare and a high-grade brilliance is obtained.

Further, in the glittering decorative sheet of the present invention, it is not necessary for all the beads to be in the embedded state as described above, and for example, there is a state as shown in FIGS. 1 (c) to 1 (e). May be. Due to such a variety of embedding states, it is possible to generate a portion having a high glittering property and a portion having a low glittering property, so that a glittering decorative sheet with more variety can be obtained.

However, for example, as shown in FIGS. 1 (a) and 1 (b), a portion in an embedded state (that is, at least two adjacent projections of the projections and depressions formed on the surface side of the synthetic resin layer by the beads) The portion which is held and is embedded in the valley formed by the convex portion at least 10% in the height direction from the bottom side of the bead) is roughly visually observed in the entire area of the bead scattering portion. 0.1-50%, preferably 0.5-4
It suffices if there is 0%. This ratio varies somewhat depending on the type of beads used and the type of synthetic resin that constitutes the synthetic resin layer (specifically, the adhesiveness between the beads and the synthetic resin layer), but in general, the above range Within the range, there will be no glare and a brilliance rich in luxury.

In the glitter decorative sheet of the present invention, the beads may be embedded in the entire surface of the synthetic resin layer in a uniform presence state, or in a partial presence state (for example, in a pattern form). Can also be embedded.

In the above glittering decorative sheet of the present invention, an upper coating layer made of a transparent synthetic resin layer may be provided on the bead layer to protect the beads. Since the durability is improved, it is preferably used as a decorative sheet for a floor material or other portions or members to which severe friction is applied.

In order to obtain the above glittering decorative sheet by the manufacturing method of the present invention, first, on the above-mentioned base material or a releasable carrier such as silicon paper or Teflon film (a releasable carrier is used). In that case, it is necessary to peel off the releasable carrier at the end, but a synthetic resin sheet without backing by a base material can be obtained), and the synthetic resin constituting the above synthetic resin layer is added to the rotary screen method. , Gravure method, offset method, flexo method, doctor knife method, comma doctor method, reverse roll method, or any other suitable method. This application may be performed only once or may be performed multiple times. When applying multiple times,
It is applied after the previously applied synthetic resin layer has gelled or dried. Further, the uppermost synthetic resin layer (in the case of coating only once, that layer, the same applies hereinafter) can be coated so as to have an appropriate pattern.

Next, before the uppermost synthetic resin layer thus applied is gelled or dried, the above beads are sprinkled on the synthetic resin layer. This spraying may be performed on the entire surface of the synthetic resin layer or may be performed on only a part thereof. When it is applied only partially, it can be sprayed in an appropriate pattern. If the amount of spray is too large, the adhesive strength will decrease, and if it is too small, the desired brightness cannot be obtained. Therefore, the amount is less than the amount that can provide the practical adhesive strength, and an appropriate amount may be selected according to the desired brightness.

After that, it is introduced into a heating furnace or the like to gel the synthetic resin layer. At this time, when the synthetic resin layer contains a foaming agent, foaming is performed together with gelation.

Finally, mechanical embossing is applied. The interval between the embossed convex portions can be arbitrarily selected depending on the size of the beads, but it is desirable to make it smaller than the diameter of the beads. The conditions for mechanical embossing are not particularly limited, and may be the same as the conditions for mechanical embossing in a conventional decorative sheet of this type. However, when the temperature is low, the embedding degree of the beads is small because the synthetic resin layer is not sufficiently softened, and when the temperature is high, the embedding degree of the beads is large because the layer is sufficiently softened. .. Therefore, an appropriate temperature can be selected according to the desired degree of embedding. The selection of this temperature can be easily performed by the heating process prior to the mechanical embossing process.

By the above mechanical embossing, at least 10% in the height direction from the bottom side of the beads
However, as described above, the portions embedded in various states as shown in FIGS. 1 (a) and (b) and FIGS. 2 (a) and (b) are
It will occupy about 0.1 to 50% of the total area of beads scattered.

[0031]

In the glittering decorative sheet of the present invention, the beads B are
For example, since the portions embedded in the synthetic resin layer 1 in various states as shown in FIGS. 1 (a) and 1 (b) and FIGS. 2 (a) and 2 (b) are scattered, the reflection of light by the beads B is reflected. Shows various aspects. For example, as described above, in the portion embedded in the state as shown in FIGS. 1 (a) and 1 (b) and FIGS. 2 (a) and 2 (b),
Light incident through the beads causes complicated refraction and reflection due to the contact slope between the synthetic resin layer and the beads and the void portion between the beads and the synthetic resin layer in FIG. 1 (b) and FIG. 2 (b), and the beads are buried. It emits different brilliance depending on the degree of entry and the viewing angle, and it has a high-grade brilliance without glare. Therefore, the entire glitter decorative sheet of the present invention emits a variety of glitters and has a dull, silver-tone brightness, and has a high-quality and high-grade appearance with a high commercial value.

Moreover, when the beads are synthetic resin beads, the shape of the beads is not limited to a sphere, and various shapes such as an ellipsoidal sphere or a polyhedron can be easily obtained. If you use, the brightness of the above-mentioned smoky silver tone is more complicated, and not only the brightness is rich in high quality and high quality, but you can also feel the brightness different depending on the viewing angle, and the decorative effect with more variation Can be realized at low cost.

By embedding such beads in a synthetic resin layer in which a specific pattern (pattern) is formed, or by embedding the beads themselves in a specific pattern (pattern), The glittering decorative sheet of the present invention has a more varied design. In addition, the glittering decorative sheet of the present invention in which the beads are embedded in the specific mode as described above has a harder feel than a decorative sheet in which the surface of the synthetic resin layer is mechanically embossed. Will have.

When the beads are synthetic resin beads, since the synthetic resin beads have high strength and good adhesiveness with the synthetic resin layer, the glitter decorative sheet of the present invention can be easily manufactured. In addition, the practical strength of the sheet when used is sufficient.

In the production method of the present invention, it is possible to partially secure the above-mentioned embedding state of the beads only by dispersing the beads on the synthetic resin layer before gelation. However, the embedded state is limited to that shown in FIGS. 1C and 2C, that is, the state where the bottom of the bead is in contact with the synthetic resin layer, and the light reflection becomes uniform, resulting in glare. The feeling is quite strong.

On the other hand, in the case of the one manufactured by the manufacturing method of the present invention, that is, the one in which the synthetic resin layer is gelled and mechanically embossed, the embedding of the beads is
(A), (b) and those shown in FIGS. 2 (a), (b), and other various states, the reflection of light varies, changing from a glaring feeling to a dull, dull silver tone, It gives a feeling of quality and a sense of quality, and gives off a brilliant variety. Further, if the heating process is performed before the mechanical embossing, the embedding state of the beads is further changed, and the effect of changing to the smoky silver tone is more effectively exhibited.

The adhesiveness of the beads, in other words, the durability of the product sheet, is improved by mechanical embossing. The effect of improving the adhesiveness or durability is more effectively exhibited by adding heat treatment before mechanical embossing.

[0038]

【Example】

Example 1 A backing paper of 80 g / m ² was used as a base material, and a colored synthetic resin paste having a formulation shown in Table 1 was applied onto the base material.
It was applied to a thickness of 250 μm with a comma doctor and heated at 160 ° C. for 1 minute to gel. Gravure printing was performed on the gelled layer using an ink having the composition shown in Table 2. After the ink layer formed by gravure printing was dried, a transparent synthetic resin paste having the composition shown in Table 3 was applied in a pattern by a rotary screen printing method so as to have a thickness of 150 μm.

[0039]

[Table 1]

[0040]

[Table 2]

[0041]

[Table 3]

Before the transparent synthetic resin paste layer is gelled, crosslinked acrylic resin beads having an average particle diameter of 200 to 400 μm are sprinkled, and excess beads are removed by suction, and then 2
It was heated at 10 ° C. for 1 minute to cause gelation and foaming. Then, the surface was heated to 190 ° C. with an infrared heater and mechanically embossed.

FIG. 3 schematically shows the state of the sheet before mechanical embossing and the state of the sheet after mechanical embossing. Figure 3 (a) is before mechanical embossing, Figure 3 (b)
Is the state after mechanical embossing. In FIG. 3A, the colored synthetic resin layer 11 made of the paste having the composition shown in Table 1 is formed on the substrate P, and the gravure printing layer 12 made of the paste having the composition shown in Table 2 is formed on the colored synthetic resin layer 11. A transparent synthetic resin layer 13 made of a paste having the composition shown in Table 3 is formed on the upper surface, and transparent synthetic resin beads B are scattered on the layer 13.

In FIG. 3B, the layers 11, 12 and 13 are mechanically embossed so that the surface of each layer has an uneven pattern and the synthetic resin beads B
Mainly in the layer 13 and in a small amount in the layers 12 or 11, the beads B are mixed in the synthetic resin layers 11, 12, 1
3 is held by at least two adjacent convex portions of the unevenness formed on the surface side, and at least 10% in the height direction from the bottom side of the beads is buried in the valley portion formed by the convex portions. About 5% of the area in which the beads are placed is visually observed in the total area of beads dispersed.

Even if the surface of the product sheet of the present invention in this state is tested by a Gakushin-type friction tester under the condition of 2000 times with a load of 500 g, not only the synthetic resin beads are peeled off,
No destruction of the synthetic resin beads itself occurred. As for the surface state, the one in FIG. 3 (a) was considerably glaring, but the one in FIG. 3 (b) had a dull silver tone brightness,
It was rich in high quality and luxury.

Example 2 A glitter decorative sheet of the present invention was produced in the same manner as in Example 1 except that heat treatment was not performed before mechanical embossing. The obtained sheet had a slightly higher luminance than that in the state of FIG. 3 (b) of Example 1 (there was a slight glaring feeling), but the peel strength and the strength of the synthetic resin beads themselves were This was the same as in Example 1.

[0047]

As described in detail above, according to the present invention,
Not only is it possible to obtain a glittering decorative sheet with improved adhesiveness of beads and excellent durability, but since beads are embedded in a specific size and in various states, the reflection of light by the beads is reduced. In addition, it is possible to provide a glittering decorative sheet which has a high quality and a high-grade feeling, in which the brightness changes depending on the viewing angle and there is no glare.

The specific size of the beads and various embedding states as described above can be easily realized by mechanical embossing in the manufacturing method of the present invention or heat treatment performed before the processing.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an example of a state in which beads are embedded in a glittering decorative sheet of the present invention.

FIG. 2 is an explanatory view showing an example of a state in which beads are embedded in the glittering decorative sheet of the present invention.

FIG. 3 is a diagram schematically showing a state of a sheet before and after mechanical embossing in the method for producing a glittering decorative sheet of the present invention, where (a) shows a state before mechanical embossing and (b) shows a state after mechanical embossing. Shows.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 synthetic resin layer 11 colored synthetic resin layer 12 printing layer 13 transparent synthetic resin layer B, B'bead P backing paper

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Claims (3)

[Claims] 1. A decorative sheet comprising beads dispersed on the surface side of a synthetic resin layer, the beads being held by at least two adjacent convex portions of the irregularities formed on the surface side of the synthetic resin layer. And a glittering decorative sheet, characterized in that at least 10% in the height direction from the bottom side of the beads has a portion embedded in a valley formed by the convex portion. 2. The method for producing a glitter decorative sheet according to claim 1, wherein beads having a particle size of 800 μm or less are dispersed on the synthetic resin layer, and then mechanical embossing is applied. A method for manufacturing a decorative sheet. 3. The method for producing a glittering decorative sheet according to claim 2, wherein heat treatment is performed before mechanical embossing.