JPH0550796A - Transfer sheet for exterior decoration - Google Patents

Abstract

PURPOSE:To obtain a transfer member for exterior decoration, having a beautiful appearance and durability, in a single process and enable a design to be maintained for a long period of time by forming the surface of a transfer layer of a transfer sheet with colored powdered/ granular materials which are partly embedded in a completely cured transparent resin layer and partly exposed thereon. CONSTITUTION:A transfer sheet consists of a base sheet 1 and a transfer layer 2, and the base sheet supports the transfer layer until transfer is completed, while the transfer layer 2 is transferred to a base material to decorate it. Further, the transfer sheet 2 consists of a peel ply 21, a topcoat layer 22, a printing ink layer 23, a transparent resin layer 24 and a colored powdered/granular material layer 25. To bond the transfer sheet to the base material, colored powdered/granular materials are partly embedded at every unit in the transparent resin layer 24, and the remaining portion thereof is exposed on the transparent resin layer 24. To accomplish this process, the transparent resion layer 24 is applied when the transfer sheet is produced, the colored powdered/granular materials are sprayed onto the surface of the transparent resin layer when it is still in an uncured state and, thereafter, the transparent resin layer 24 is cured. It is preferable that the colored powdered/granular materials have a particle size of about 100 to 1000mum because each unit of the materials is partly embedded in the transparent resin layer 24 and the remaining portion thereof is exposed.

Description

Detailed Description of the Invention

[0001]

The present invention is excellent in weather resistance and scratch resistance,
Further, the present invention relates to an exterior transfer sheet in which a transfer operation process is simplified.

[0002]

2. Description of the Related Art The structure of a conventional transfer sheet has a three-layer structure of a release layer, a printing ink layer and an adhesive layer on a base sheet, and transfer painting is applied to a hydrothermal synthetic cured material such as concrete or gypsum. When it is performed, it is used by the following methods (a) and (b).

(A) A transfer sheet is placed in a mold, and an aqueous slurry of concrete, cement or the like is poured into the transfer sheet, and after curing by reaction, the base sheet is peeled and removed for decoration. Is. (B) It is a decoration method at the time of curing the base material, in which the transfer sheet is pressure-bonded to the base material such as ALC after completion of the reaction curing while applying heat, and the base material sheet is peeled off and decorated.

When it is used for the exterior of a building, (a),
The surface of the molded product obtained by the method (b) is further coated with a weather resistant paint.

However, in the above-mentioned transfer sheet, when it is used in a portion of the exterior, which is required to have very high durability, the surface topcoat layer deteriorates, and the pattern gradually disappears or fades. To do. Also,
Since the base material and the design layer are adhered only by the adhesive material, the transfer of the design material to the base material may cause the design layer to peel off when placed in a severe outdoor environment. Further, since it is necessary to apply a top coat on the surface after transferring to the base material as a construction step, there is a problem that two steps are required and it is complicated.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art. Even if the design layer on the surface deteriorates after being used for a long period of time, the design can be maintained and the design can be maintained. It prevents the layers from peeling off. More simply 1
It is an object of the present invention to provide an exterior transfer sheet capable of simultaneously transferring a pattern and applying a top coat by two steps.

[0007]

In order to achieve the above-mentioned object, the present invention provides a transfer sheet comprising a base sheet and a transfer layer laminated on the base sheet so that the transfer layer can be easily peeled off. Provided is a transfer sheet for exterior, which is composed of a colored powder particle part of which is partially embedded in and exposed. More preferably, the transfer layer has a topcoat layer having excellent weather resistance between the release layer and the ink layer, and provides a transfer sheet for exterior packaging. The present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a sectional view showing an embodiment of the exterior transfer sheet of the present invention. This transfer sheet comprises a base sheet 1 and a transfer layer 2. The base sheet 1 supports the transfer layer 2 until the transfer is completed, and the transfer layer 2 is transferred to the base material and decorates it.

As the base sheet 1, any sheet can be used as long as it has flexibility. For example, polyolefin such as polyethylene, polypropylene or polystyrene, and plastic sheet such as polycarbonate, polyvinyl chloride, polyamide, polyester, polyacrylonitrile, acrylonitrile-butadiene-styrene copolymer, organic and inorganic fibers, or synthetic and natural fibers. Quality sheets etc. are possible.

The transfer layer 2 is composed of a peeling layer 21, a top coat layer 22, a printing ink layer 23, a transparent resin layer 24, and a colored powder particle layer 25.

As the release layer 21, an appropriate one is selected depending on the materials of the base sheet 1 and the top coat layer 22. However, when the top coat layer 22 is easily peeled from the base sheet 1, the release layer 21 need not be provided, and the top coat layer 22 may be directly provided on the base sheet 1.

The top coat layer 22 is preferably made of fluorine, acrylic silicon or the like having good weather resistance. The thickness of this layer is generally 5 to 200 μm, preferably 1
A good thickness is from 0 to 100 μm, which is provided by the knife coater method.

The printing ink layer 23 is usually printed by a method such as gravure printing or screen printing. The binder of the ink is appropriately determined in consideration of the large elongation when heated and the durability of the final product.

The transparent resin layer 24 is preferably the same as the binder used in the printing ink in consideration of the adhesion to the printing ink. The thickness of this layer is generally 5 to 200 μm, preferably 10 to 100 μm.

Due to the effect of synergizing with the printing ink layer 23, the colored powdery particles have a depth in the pattern, and the color thereof is a color which is not unnatural in appearance when the printing ink layer 23 is missing. Is preferred. Further, for coloring the powdery particles, it is preferable to color silica sand in consideration of heat during reaction curing of the base material.

In order to adhere the transfer sheet to the substrate, one unit of each colored powder is partially transparent resin layer 2
4 and the remaining portion needs to be exposed on the surface of the transparent resin layer 24. In order to obtain this, the transparent resin layer 24 may be applied at the time of manufacturing the transfer sheet, and while the uncured resin layer is coated with the colored powder particles, the transparent resin layer 24 may be cured thereafter. Incidentally, the particle size of the colored powder particles is that, as described above, it is necessary to partially embed each unit of the powder particles in the transparent resin layer 24 and to expose the rest.
It is preferably about 100 to 1,000 μm.

[0017]

In the exterior transfer sheet of the present invention, the colored powder particles are
Due to the synergistic effect with the printing ink layer 23, it is possible to give the pattern a depth and to eliminate the unnatural appearance of the color when the printing ink layer 23 is missing. The colored powder particles are embedded between the transparent resin layer 24 and the base material, so that they can be firmly bonded to the base material.

The transfer layer 2 comprises a release layer 21 and a printing ink layer 2.
By having the top coat layer 22 having excellent weather resistance between the base sheet 3 and the sheet 3, there is no need to reapply the top coat after peeling the base sheet during transfer.

[0019]

EXAMPLES The present invention will now be described more specifically by showing examples of the present invention. The following layers were sequentially laminated on a semi-rigid vinyl chloride sheet having a thickness of 0.2 mm by using gravure printing. (1) Release layer 21 made of polyvinyl butyral (2) Top coat layer 22 made of fluororesin (100 μ
m) The top coat layer 22 was applied by a knife coater. (3) Printing ink layer 23 (brick pattern) consisting of coloring pigments (alamide yellow, phthalocyanine blue, dianthraquinonidle red) and polyvinyl chloride (4) Polyvinyl acetate (medium of the above ink) Transparent resin layer 24 (100 μm) (5) Colored powder layer 25 made of silica sand colored in white (particle size 200 μm) While the transparent resin 24 of (4) above is uncured, its surface turns white. Disperse colored silica sand (particle size 200 μm),
After that, the transparent resin 24 was cured.

The transfer sheet thus obtained was placed on the bottom plate and the side plate of the mold so that the surface of the colored powdery or granular material layer 25 of (5) corresponding to the adhesive layer faces inward. Next, an aqueous slurry, which is a raw material for cement, was added, vibration mold clamping was performed, and the mixture was cured. After the curing was completed, the mold was removed, and the semi-rigid vinyl chloride sheet was peeled and removed. The obtained product had a design on the transfer sheet and had a very high design.

[0021]

As described above, according to the present invention, there is no need to apply the top coat again after the base sheet is peeled off at the time of transfer, and a beautiful and durable transfer member for an exterior can be obtained in one step. Can be obtained. Further, by having the transparent resin layer 24 and the colored powder / grain layer 25, it is possible to obtain a transfer body having a deeper pattern, and even if the surface is missing or scratched for some reason, It is possible to retain a beautiful design for a long time without exposing the base material.

[0022]

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an example of an exterior transfer sheet according to the present invention.

FIG. 2 is a cross-sectional view showing an exterior transfer sheet according to a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Substrate sheet 2 ... Transfer layer 21 ... Release layer 22 ... Top coat layer 23 ... Printing ink layer 24 ... Transparent resin layer 25 ... Coloring powder layer 31 ... Design layer 32 ... Adhesive layer

Claims (2)

[Claims] 1. A transfer sheet obtained by laminating a transfer layer on a base sheet for easy peeling, wherein the transfer layer surface is partly embedded in a completely cured transparent cured resin layer and partly exposed colored powder particles. An exterior transfer sheet, which is composed of a body. 2. The transfer sheet for exterior according to claim 1, wherein the transfer layer has a topcoat layer having excellent weather resistance between the release layer and the ink layer.