JPH0699560A - Polyester decorative plate - Google Patents

Abstract

PURPOSE:To easily and effectively provide a polyester decorative plate having high curability, glass, shaping stability of a surface by using resin in which curing disturbance does not occur with oxygen as polyester resin in the plate of a shaping resin molded with silicone resin. CONSTITUTION:A polyester decorative plate having a rugged pattern is formed by laminating a printed decorative stock sheet 4 formed with a desired picture pattern layer 5 on a plywood by using adhesive 3, coating the sheet 4 with air dry non-wax polyester resin, then integrally bonding with silicone resin shaping die 7 to be cured, and then peeling the die.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative board used for various kinds of furniture and interior materials for buildings, and more particularly to a decorative board suitable for expressing uneven patterns such as wood grain.

[0002]

2. Description of the Related Art As a conventional decorative board of this type, titanium having a pattern layer such as wood grain formed by forming an impressed pattern of a concave and convex pattern of a material such as natural wood using a silicone resin and holding it A printed decorative base paper such as paper is laminated by a roll press on a substrate such as plywood with an adhesive, and further, an unsaturated polyester resin is applied to the entire upper surface of the printed decorative base paper having the above-mentioned pattern layer, and then the die is pressed. A method of pressing and curing and forming an uneven pattern of a material on the surface of a decorative plate is widely used as a method with high reproducibility of the texture of the material.

[0003]

However, in the prior art as described above, since the polyester resin liquid used is an unsaturated polyester resin, when it is applied to printed decorative paper, impregnated and then cured, a surface shaping mold is applied. Since the silicone resin layer used as a material has a high oxygen permeability, the unsaturated polyester resin on the surface of the molding surface inhibits oxygen curing, and the surface is not sufficiently cured.

As a method for preventing inhibition of oxygen curing, polyethylene terephthalate, polyvinylidene chloride, ethylene /
There is also a method of curing an unsaturated polyester resin by covering a film such as a vinyl alcohol copolymer or nylon, but the durability of the shaping mold is improved by the styrene monomer in the resin liquid staying or precipitating in the shaping mold. Since it lowers, there is a problem that the mold release after molding is deteriorated and the number of times of use of the silicone resin shaping mold is small.

Alternatively, it is conceivable to carry out in an atmosphere of an inert gas such as nitrogen or neon, or to block air from the film surface by adding a wax to form a thin film of wax on the surface of the coating film. However, there is a drawback that the surface is clouded by wax and it is difficult to polish, and it is not easy to form a high quality product at low cost.

The present invention has been made in view of the above problems, and it is an object of the present invention to easily and surely provide a polyester decorative board produced by using a shaping mold that is molded with a silicone resin.

[0007]

Means for Solving the Problems The gist of the present invention for achieving the above object is to provide an air-drying type for producing a polyester decorative board using a silicone resin shaping mold reinforced with a Tetron fiber mesh or the like. A non-wax unsaturated polyester resin is used.

[0008]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a sectional view in the manufacturing process of the decorative plate 1 according to this embodiment, and FIG. 2 is a sectional view of a finished product of the decorative plate 1.

In FIG. 1, reference numeral 4 is a decorative base paper, and 5 is a pattern layer printed on the decorative base paper. The decorative base paper 4 on which the pattern layer 5 is laminated is a decorative board with an adhesive 3 interposed therebetween. It is laminated on the substrate 2 for use.

Further, an air-drying non-wax unsaturated polyester resin layer 6 is laminated on the entire upper surface of the decorative base paper 4 on which the pattern layer 5 is laminated, whereby the decorative base paper 4 having the pattern layer 5 is formed. The entire upper surface of is protected.

On the surface of the air-drying type non-wax unsaturated polyester resin layer 6, a concave portion 8 is formed by a silicone resin shaping mold 7.

As the material of the printing base paper 4, paper-based materials such as thin paper, non-woven fabric, synthetic resin and the like are used, and the thickness thereof is appropriately selected within the range of 10 μ to 500 μ. Among the above materials, titanium paper is most suitable in terms of suitability for impregnation with unsaturated polyester resin liquid and concealment of the substrate. In that case, the weight is preferably 50 to 150 g / m ² .

The pattern layer 5 is printed with an arbitrary pattern such as a wood grain pattern, an abstract pattern, a stone pattern, etc. As a method of forming the print layer, a usual printing method such as gravure printing, screen printing or offset printing is used. You can As the ink, it is preferable to use a cellulose acetate type or a cellulose acetate / nitrocellulose mixed type vehicle.

The substrate 2 and the printing base paper 4 are joined by an adhesive 3 by roll pressing as in the conventional case. As the adhesive, an emulsion type adhesive such as acrylic resin or vinyl acetate resin can be usually used.

The unsaturated polyester resin layer 6 is formed by applying a resin liquid on the printing base paper, impregnating it, and curing it. When the unsaturated polyester resin liquid is applied and impregnated and then cured, a so-called non-wax type unsaturated polyester resin is applied, which has no effect of oxygen curing inhibition and can be surface-dried without using wax. Examples of the method include methods such as modification of the acid component in the unsaturated alkyd, modification of the glycol component in the unsaturated alkyd, modification of the monomer in the unsaturated alkyd, addition of a thermoplastic resin, and the like. This is due to the modification of the glycol component in the saturated alkyd. Unsaturated polyester resins, in which allyl ethers are used as a glycol component in combination with other glycols or used alone, exhibit extremely good air-curing properties, and are physically hard and wear resistant. Rich in heat resistance, weather resistance, and chemical resistance. A polymerization initiator and, if necessary, a polymerization accelerator are added to the resin liquid before use.

Various methods can be used to prepare the silicone resin shaping mold. For example, a composition obtained by kneading a silicone resin with an appropriate solvent or an emulsion composition is used to prepare the surface of the original plate for the original. It can be carried out by a usual method such as pouring or coating. Further, in the above, when applying silicon resin to the surface of the original plate,
For reinforcement, glass fiber or tetron fiber mesh may be applied by a conventional method.

Hereinafter, the present invention will be described in more detail with reference to specific examples. Example 1 Creation of Silicon Shaped Mold A separate natural oak veneer was laminated on a hard board having a thickness of 4 mm to prepare an original. Silicon resin (TSE3453T manufactured by Toshiba Silicon Co., Ltd.) was poured onto the original so that the thickness was 0.4 mm, left at room temperature for 24 hours to cure, and then peeled from the original to obtain a silicon shaping mold.

[0019] on top of the decorative plate creating First Xing people made of titanium paper 80g / m ^2, ink for the cellulose acetate with a vehicle (Showa ink Industries Made of -
L) was used to print a wood grain pattern by gravure printing to obtain a decorative base paper 4.

Then, EVA is put on the plywood 2 having a thickness of 2.5 mm.
After roll-coating the system adhesive 3, the decorative base paper 4 obtained above was laminated.

Next, the decorative base paper 4 having the above-mentioned pattern layer 5
280 g / m of air-drying non-wax unsaturated polyester resin 6 (Showa Polymer Rigolac) on the entire upper surface of
^After applying the coating amount of ² above and covering the shaping mold obtained above from above, defoaming and smoothing using a roller, then at 80 ° C.
After leaving it in the drying oven for 3.5 minutes, it was taken out, left at room temperature for 10 minutes, and the shaping mold was peeled off to obtain a polyester decorative board.

Example 2 The unsaturated polyester resin of Example 1 was cured at room temperature for 6 hours.
A polyester decorative board was obtained by changing the standing time to 0 minutes and following the same procedure as the corresponding step of Example 1 in other steps.

[0023]

The polyester decorative board of the present invention is
Since an air-reactive non-wax unsaturated polyester resin is used, an air barrier layer is not required on the silicone resin shaping mold, and since the silicone resin layer is breathable, unreacted styrene monomer does not remain in the silicone resin layer. It was

Since the styrene monomer in the resin liquid does not stay and precipitate in the shaping mold, the durability of the shaping mold is improved. Conventionally, the service life of the shaping mold was 40 to 50 times, but 100 times or more. Greatly extended.

Since the air-drying type non-wax unsaturated polyester resin is used, a high quality polyester decorative board having good curability and gloss stability of the coating film surface was obtained.

[0026]

[Brief description of drawings]

FIG. 1 is a schematic sectional view of a manufacturing process.

FIG. 2 is a cross-sectional view of a polyester decorative board.

[Explanation of symbols]

 1 Polyester Decorative Board 2 Substrate 3 Adhesive 4 Decorative Base Paper 5 Picture Layer 6 Air Dry Non-Wax Unsaturated Polyester Resin 7 Silicon Resin Shaped Mold 8 Recess

Claims (1)

[Claims] 1. A decorative board substrate is coated with an adhesive, and a decorative base paper on which a pattern layer is formed is laminated on the adhesive layer with the pattern layer on top. A saturated polyester resin is applied, and then the uneven surface of a silicon resin film having unevenness is laminated so as to be in contact with the unsaturated polyester resin and integrally cured, and then the silicon resin film is peeled off. In the uneven decorative plate, an air-drying non-wax unsaturated polyester resin is used as the unsaturated polyester resin.