JP2925749B2 - Surface reinforced decorative flooring - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface-reinforced decorative flooring material which maintains the woody feel of the surface, and is useful for use in, for example, home decks, corridors, corridors of hotels, inns and the like. .

[0002]

2. Description of the Related Art Wood-based materials such as veneer veneers and carpets, P-tiles, and other chemical-based materials are generally used on the floors of houses. In recent years, wood-based materials have a healthy image and are often used. It has become. In particular, the texture of natural wood (hereinafter referred to as woody texture) is preferred.

[0003] As a material having a woody feel of natural wood, a product in which a decorative veneer with beautiful wood grain is adhered to a base plate represented by plywood with a vinyl acetate emulsion or a urea resin and the surface of the veneer veneer is painted. Generally known. However, these products have insufficient surface veneer hardness, insufficient durability, and long-term changes in the color of the veneer veneer when exposed to UV rays for a long time, such as white wood. And the range of use was very limited.

On the other hand, as a reinforced wood-based material, a composite of wood and resin (hereinafter abbreviated as WPC) has become popular with the improvement of impregnation technology. However, the surface-decorated wood veneer is immersed in the reinforcing agent, and the reinforcing agent is forcibly impregnated into the surface-decorated wooden veneer by a known decompression method, a pressurization method, or a combination thereof,
If this is laminated on a base plate not impregnated with a reinforcing agent and adhesively molded under heat and pressure using an adhesive if necessary, the surface of the veneer veneer can be improved even if the performance can be improved. It has a wet color, has a plastic feeling, loses the inherent color tone of natural wood, has a printed appearance, has difficulty maintaining the woody texture, and has insufficient abrasion resistance. Was.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a surface-reinforced decorative flooring material which has a feeling of wood and is excellent in hardness, durability, abrasion resistance and discoloration resistance and is particularly useful for floors. It is.

[0006]

Means for Solving the Problems As a result of diligent studies, the present inventors have found that a wooden decorative veneer compressed and reinforced on one surface of a substrate for impregnation impregnated with a reinforcing agent and a base plate on the other surface. One or both of a lubricating agent and a UV absorber are added to the wood solid veneer surface of the flooring material, which is formed by laminating the materials and heating and pressing under pressure, from 1 to 30% by weight based on the solid content of the paint. By applying a paint containing 0.1% to 10% of a slip agent and 3% to 30% by weight of a matting agent on the outermost layer paint, there is a woody feeling, and a surface makeup by ultraviolet rays is applied. It has been found that it is possible to obtain a surface-reinforced decorative flooring material having less discoloration of veneer, hardness, abrasion resistance and surface contamination resistance.

Hereinafter, the present invention will be described in detail.

The wood decorative veneer used in the present invention is a beautiful veneer used for the surface layer, and may be a slice veneer or a rotary veneer, and the tree species is not particularly limited. Japanese conifers represented by red pine, sawara, cypress, hiba, hemlock, etc. may be imported conifers represented by agathis, Canada spruce, radiata pine, pine pine, beet suga, etc. , Beech, oak, kamba, camphor, etc., and imported hardwoods such as walnut, kokutan, rosewood, mahogany, ramin, and rosewood. The thickness of such a plate is 0.2-3
mm, and preferably 0.3 to 2.0 mm.
If the thickness is less than 0.2 mm, the exudation of the reinforcing agent comes out on the surface of the veneer, so that the wood feeling is lost. 3.0m
If the thickness is not less than m, sufficient hardness cannot be obtained because the penetration of the reinforcing agent is insufficient.

The veneer with a beautiful grain of wood of the present invention is used after being compressed. The compression of the veneer with a textured veneer improves the density and further enhances the microstructure inside the veneer with the veneer. Breakage occurs, which has the effect of improving the penetration of the reinforcing agent into the interior of the veneer with decorative wood surface. Known methods can be used for compressing the veneer, but a flat plate press, a hot roll comprising two pairs of upper and lower plates, and the like are generally used. In the case of a flat-plate press, the pressure is generally 10 to 100 kg / cm ^2, but the pressure is not particularly limited as long as the pressure is such that the wood is compressed and the thickness is reduced. If heating is performed during or before pressurization, compression can be performed more efficiently. Heating is preferably at 40 to 250 ° C. At 40 ° C or lower, the wooden veneer is less likely to be compressed.
If the temperature is higher than ° C., components such as tar in the wood will flow out, and burning will easily occur due to heat, and the beauty of the beautiful grain may be impaired. The pressurizing time is not particularly limited, but is preferably 10 to 600 seconds, and if it is 10 seconds or less, it will not be sufficiently compressed. Is also not preferred.

[0010] In the compression treatment of the surface-decorated wood veneer, if the ratio calculated as the thickness decrease before compression of 100 as the thickness before compression is defined as the compression ratio, the wood-decorated veneer used in the present invention is used. The compression ratio varies depending on the type of wood and is not limited, but is preferably 10 to 80%. If it is less than 10%, sufficient hardness cannot be obtained, and if it is more than 80%, it is practically difficult with a general wood veneer veneer.

The impregnated base material used in the present invention is represented by woody materials such as wood veneer, ground board, plywood, particle board, fiber board, various nonwoven fabrics, paper such as filter paper, glass wool and the like. Glass fiber, carbon fiber, or an inorganic material such as asbestos, or a composite material thereof. The thickness of the substrate is 0.01 to 5.
0 mm can be used and can be appropriately selected depending on the type and shape of the impregnated base material, and is preferably 0.1 to 3.0 mm. If the thickness is less than 0.01 mm, the impregnation of the reinforcing agent becomes insufficient, and if it exceeds 5 mm, the reinforcing agent is impregnated in a large amount, and if the decorative wood veneer is thin or easily penetrates, Exudation increases more than necessary, which may impair the feeling of wood, and is not the object of the present invention.

The reinforcing agent used in the present invention may be any one which is liquid at normal temperature and can be impregnated into a wooden veneer veneer and can strengthen the veneer.
It is preferable that the viscosity at 25 ° C. is 500 cps or less in terms of impregnating property. Examples of such a reinforcing agent include alkyd resin, epoxy resin, polybutadiene resin, urethane resin, unsaturated polyester resin, vinyl ester resin, diallyl phthalate resin, urea resin, melamine resin, and silicon. Synthetic resins that are commonly used for reinforced cosmetics, such as resin-based resins and phenolic resins, can be mentioned, and can be appropriately selected from them.

[0013] Reactive monomers can also be used as tougheners, such reactive monomers being vinyl monomers, ie (meth) acrylic acid monomers and (meth) acrylic ester monomers, acrylic monomers and acrylic esters. Series monomers and styrene monomers. Further, an initiator or an accelerator may be added for the purpose of accelerating the reaction.

The method for impregnating the impregnated substrate with the reinforcing agent as described above is not particularly limited, but a known dipping method,
Impregnation methods such as a reduced pressure method, a pressurized method, and a reduced pressure method can be used.
Further, it is preferable to use an impregnated base material which can be quickly impregnated with a reinforcing agent by immersion or the like, and examples thereof include various nonwoven fabrics, glass cloth, cloth, paper, and asbestos paper exemplified below. Although the impregnation rate of such a reinforcing agent varies depending on the shape and type of the base material and is not particularly limited, the reinforcing agent is suitably 30 to 2000% by weight based on the base material 100, and preferably,
40 to 1000% by weight. 30% by weight
If it is less than 3, the penetration of the reinforcing agent into the wood veneer veneer is insufficient, and the performances of the present invention such as hardness and abrasion resistance cannot be obtained. If the amount is more than 2000% by weight, the reinforcing agent exudes to the surface of the veneer veneer veneer, which often significantly impairs the feeling of wood, which is the object of the present invention. The impregnated base material is made of wood material such as veneer, ground plate, plywood, particle board, fiber board, etc. having a thickness of 0.2 mm or more, and inorganic material such as cement board, gypsum board or a composite plate of these materials. One side is laminated, and the other side of the impregnated base material is compressed and laminated with an unimpregnated wooden surface decorative veneer having a thickness of 0.2 to 3.0 mm, followed by compression molding by a known method.

Further, an adhesive may be used in combination in order to improve the adhesion between the impregnated base material and the plywood. Adhesives that can be used include aqueous vinyl urethane resin, phenol resin, resorcinol resin, urethane resin, urea melamine resin, epoxy resin, and the like.

The compression molding for producing the surface-reinforced decorative flooring material of the present invention can be performed by a known method using a flat plate press, a roll press, a belt press, or the like. However, in order to perform this molding in a short time,
Hot pressing is preferred. The molding conditions at that time vary depending on the combination of the type of reinforcing agent used, the thickness of the veneer veneer, the type and thickness of the base plate, etc., and are not particularly limited. １５０150 ° C., press pressure is contact pressure ６０60 kg / cm ² , press time is 1-6
0 minutes. Further, for the purpose of controlling the degree of exudation, shortening the curing time, etc., the impregnated base material impregnated with the reinforcing agent may be dried or heated as required.

The paint used in the present invention contains 3 matting agents.
The content is not particularly limited as long as the painted surface-reinforced decorative veneer has a woody feel, but is additionally reduced for the purpose of improving abrasion resistance, discoloration resistance, stain resistance, and durability. Preferably, it contains 1 to 30% of a friction material, 1 to 30% of an ultraviolet absorber, and 0.1 to 10% of a slip agent. The coating may be performed using only the same kind of paint a plurality of times or using a plurality of paints. The number of times of the coating is not particularly limited, but is preferably 2 to 3 times.

Examples of the coating material include generally used two-component urethane resin type, one-component urethane resin type, unsaturated polyester resin type, acrylic resin type, amino alkyd resin type and the like. Can be used in combination.

As the matting agent used for the outermost layer of the coating material, any matting agent can be used, but for example, polyethylene type, silicon oxide type and the like are generally used. The particle size of the matting agent is not particularly limited as long as the object of the present invention can be achieved, but is usually 1 to 100 μm. The addition amount of the matting agent is preferably 3 to 30% based on the solid content of the outermost layer paint. If it is less than 3%, the matting effect is not sufficient, and the woody texture aimed at by the present invention cannot be obtained. If it exceeds 30%, the performance of the paint will be reduced, which is not economically preferable.

Any commonly used antifriction material can be used alone or as a mixture, and the particle size is not particularly limited as long as it is used for the intended purpose. For example, there are inorganic fine powders such as silicon dioxide, aluminum hydroxide and silicon nitride. This is 1 to 30%, preferably 10 to 3%, based on the coating resin weight of 100.
0% added amount.

As the ultraviolet absorber, any of commonly used salicylic acid, benzophenone, benzotriazole, hindered amine and the like can be used. Preferably, benzophenone and benzotriazole are used, for example, 2-4. Dihydroxybenzophenone, 2-
Hydroxy-4-methoxybenzophenone, 2- (2 ′
-Hydroxy-5'-methylphenyl) benzotriazole, 2- (2'-hydroxy-3'-5'-die)
rt-butylphenyl) -5-chlorobenzotriazole 5 and the like, and they can be used alone or in a mixture at any ratio.

The method of adding the ultraviolet absorber is not particularly limited, but it is generally mixed with the paint and used, and the amount of addition is 1 to 30 when the weight of the solid content of the paint is 100.
%, Preferably 5 to 20%. When the amount of the ultraviolet absorber added is 1% or less, the discoloration of ultraviolet rays is large in particular in the case of white wood species such as cypress, which is not the object of the present invention. If it is 30% or more, there is a problem that the performance of the paint is deteriorated, and there is a problem that the woody feeling is impaired with the colored ultraviolet absorber, and this is not the object of the present invention.

The slip agent used in the present invention is one which is added to a paint and imparts stain resistance to the painted surface of the veneer veneer, but is not particularly limited as long as the purpose is achieved. However, silicone resin, fluorine resin and the like are generally used. The amount of addition is 0.1 to
10%, preferably 0.5 to 2%. If it is less than 0.1%, the effect of preventing stain resistance is small, and if it exceeds 10%, the coating performance will be reduced, and the painted surface will be very slippery. Absent. When an anti-friction material and an ultraviolet absorber are added to the paint used in the present invention, it can be appropriately added to one or more of the top, middle, and undercoat paints.

Hereinafter, the present invention will be described with reference to examples.

Example 1 An air-dried sliced hinoki cypress veneer having a thickness of 0.7 mm was
The roll interval is set to 0.
The temperature of the upper and lower rolls was compressed at 200 ° C. A compressed cypress veneer having a compression ratio of 40% obtained by dividing the thickness reduced by compression by the thickness before compression was obtained.

The thickness 1 which is usually commercially available as a base plate plywood
A commercially available melamine resin-impregnated paper (basis weight 230 g) is cut on a 2 mm 5 ply Rawan plywood 11 × 380 cm size Lauan plywood to the same size as the base plate plywood and laminated. Furthermore, the compressed cypress veneer was laminated on the impregnated paper to obtain a three-layer laminate. This laminate was thermoformed by a hot press at 130 ° C., 13 hg / cm ² for 3 minutes, and the uncured resin was cured after being spread on a veneer veneer.

The obtained surface-reinforced hinoki cypress composition was treated by a known sanding method, and then surface-coated by applying the following coating conditions to produce a woody material having a surface texture with a woody feel and a woody feel. The hardness, discoloration resistance, stain resistance, and woodiness of this material were evaluated. The results are shown in Table 1.

Coating conditions (1) Undercoating compounding ratio (parts by weight) A Two-component urethane resin-based paint 180 B Ultraviolet absorber 30 C Lubricant 30 D Dilution thinner Suitable amount A: "95 Rose A, B" manufactured by Sanyu Paint Co., Ltd. B: Ciba Geigy "Tinuvin 1130"C; Asahi Glass "White Random RE-184 # 40"
0 ”D;“ Gart Rose Thinner ”manufactured by Sanyu Paint Coating amount 30g / m ² Coating method Roll coater twice coating Curing method Leave at room temperature for one day Paint viscosity Iwata cup 30 seconds (2) Middle coating Mixing ratio (parts by weight) A Unsaturated polyester resin paint 75 B Styrene monomer 25 A; “R-909NY” manufactured by Sanyu Paint B: “Styrene monomer” manufactured by Sanyu Paint Coating amount 30 g / m ² Coating method Roll coater twice coating Curing method UV curing coating Viscosity 50 seconds (3) Sanding After completion of the intermediate coating, the product is polished with No. 400 sandpaper in order to improve the surface smoothness of the product. (4) Top coat compounding ratio (parts by weight) A Unsaturated polyester resin-based paint 100 B Slip agent 5 C Diluent solvent proper amount A; Sanyu Paint Co., Ltd. "R-586" (matting agent)
SiO ₂ containing fine powder 11%) B; Sanyu Paint Co., "U-30"C; Sanyu Paint Co. "022 thinner" coating weight 220 g / m ² coating method roll coater 2 coats curing methods UV curable coating material viscosity 25 Second

Example 2 An air-dried sliced hemlock veneer having a thickness of 0.5 mm was heated at 130 ° C., 80 kg / cm ² , 1 using a hot press (flat plate press) having a pair of upper and lower pieces. Compressed for minutes. The compression ratio of the thickness reduced by compression divided by the thickness before compression is 5
A 0% compressed veneer veneer was obtained.

Thickness 1 which is usually commercially available as a base plate plywood
2mm5 ply air-dried rawan plywood 11 × 380cm
A urea resin-impregnated nonwoven fabric (30 g of basis weight before impregnation and 160 g of basis weight after resin impregnation and drying) dried to 7% volatile matter is cut into the same size as a plywood plate and laminated. Further, a compressed hemlock veneer was laminated on the impregnated paper to obtain a three-layer laminate. 130 ° C, 13k
The material was compressed and heated under the conditions of g / cm ² and 3 minutes to obtain a woody material as a hemlock having a reinforced surface.

The surface of the wooden material was sanded and coated under the following coating conditions to prepare a desired surface-reinforced decorative material. The abrasion, hardness, ultraviolet light, discoloration, and color tone of this material were measured. Table 1 shows the measurement results.

Coating conditions (1) Undercoating compounding ratio (parts by weight) A Two-component urethane resin paint 180 B Ultraviolet absorber 40 C Wear reducing agent 40 D Diluent solvent proper amount A: "95 Rose A, B" manufactured by Sanyu Paint Co. B: Ciba Geigy "Tinuvin 1130"C; Asahi Glass "White Random RE-184 # 40"
0 ”D;“ Guart Rose Thinner ”manufactured by Sanyu Paint Coating amount 20g / m ² Coating method Roll coater twice coating Curing method One day at room temperature Paint viscosity Iwata type cup 25 seconds (2) Middle coating compounding ratio (parts by weight) A Unsaturated polyester resin paint 75 B Styrene monomer 10 A; Sanyu Paint “R-909NY” B; Sanyu Paint “Styrene monomer” Coating amount 25 g / m ² Coating method Roll coater twice coating Curing method UV curing paint Viscosity 50 seconds (3) Top coat Mixing ratio (parts by weight) A Unsaturated polyester resin paint 100 B Slip agent 5 C Diluent solvent appropriate amount A; "R-586" manufactured by Sanyu Paint Co. (matting agent)
Containing SiO ₂ fine powder 11%) B; Sanyu Paint Co., "U-30"C; Sanyu Paint Co. "022 thinner" coating weight 15 g / m ² coating method roll coater 2 coats curing methods UV curable coating material viscosity 60 Second

COMPARATIVE EXAMPLE 1 A sliced air-dried cypress veneer having a thickness of 0.7 mm and a commercially available 12 mm 5-ply plywood plate were used as a base plate, and a 200 g / m ² aqueous vinyl urethane resin was used as a base plate. After coating on the surface, it was laminated on the side where the adhesive was applied.
The surface was coated under the following coating conditions. The obtained hinoki wood material was evaluated in the same manner as in Example 1. Table 1 shows the results.

Comparative Example 2 An air-dried sliced hemp veneer having a thickness of 0.5 mm was forcibly impregnated using a pressure-resistant container apparatus. That is, after dipping in the unsaturated polyester resin solution, the pressure was reduced to 80 Torr over 10 minutes. 20 minutes after holding at 80 Torr for 1 hour
The pressure was increased to 0 kg / cm ² and maintained for 1 hour. Return to normal pressure,
A hemlock veneer impregnated with a resin at a weight ratio of 180% (based on the veneer weight before impregnation) was obtained. 200 g of water-based vinyl urethane resin adhesive on one of the surfaces of 12 mm 5-ply rawan plywood
/ M ² , and a single layer of hemlock impregnated with the above resin is laminated thereon, and is hot-pressed at 130 ° C. and 10 kg / cm ²
The product was hot-pressed for 1 minute to obtain a surface-reinforced hemlock decorative wood material.

After the wood material was sanded with a No. 400 sanding paper, it was coated by the same coating method as in Example 2 to obtain a surface-reinforced hemlock wood material.

This composition was evaluated in the same manner as in Example 1.
Table 1 shows the results.

[0037]

[Table 1]

The evaluation method in Table 1 is as follows. Hardness; Barcol hardness 936 Stain resistance; Conforms to JAS special plywood Discoloration resistance; Carbon arc 100 hours Δ before and after irradiation
Evaluation by E Appearance;

[0039]

As described above, the surface-hardened decorative flooring material of the present invention has a realistic wood texture on the surface veneer veneer surface, and has abrasion resistance, hardness, discoloration resistance, and stain resistance. It will be excellent.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Hironori Watanabe 3-9-13-1 Kutsuya, Shizuoka-shi, Shizuoka (56) References JP-A-3-7302 (JP, A) Japanese Utility Model Application Sho 62-214901 (JP, U) ) Actually open 1988-101504 (JP, U) Actually open hei 1-159046 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B27D 5/00 B27M 3/04 E04F 15 / 04 601

Claims (4)

(57) [Claims] 1. A wood veneer veneer compressed on one surface of a substrate for impregnation impregnated with a reinforcing agent, and a material serving as a base plate laminated on the other surface, and one or more layers of veneer are laminated on the surface of the wood veneer veneer. A surface-enhanced decorative flooring material with a woody feel, which is made by applying a paint and the outermost paint contains a matting agent. 2. The coating composition contains an ultraviolet absorber 1 based on the solid content of the coating composition.
2. The decorative flooring material according to claim 1, wherein the decorative flooring material contains -30% by weight. 3. The coating material has a lubricating material of 1 to 30 with respect to the solid content of the coating material.
The surface-reinforced decorative flooring material according to claim 1, which contains%. 4. The coating composition is characterized in that the coating composition has a slip agent of 0.
The surface-reinforced decorative flooring material according to claim 1, wherein the outermost layer paint contains 1 to 10%.