JPH0886079A - Temperature-sensing laminated color floor material - Google Patents

Abstract

PURPOSE: To eliminate the need for re-sticking and refinishing, and to enable the color change of a color floor by successively laminating the base material layer of wood, a temperature-sensing sealer layer containing a temperature- sensing agent and the clear layer of synthetic-resin paints. CONSTITUTION: A base material layer consisting of a woody material, a temperature-sensing sealer layer containing a temperature-sensing agent, in which a color development and a color disappearance are generated reversibly by a temperature change, and a clear layer composed of synthetic-resin paints are laminated successively. The temperature-sensing sealer layer is formed of a temperature sealer comprising micro-capsules made up of the temperature- sensing agent, in which the color development and the color disappearance are generated by the change of a state due to a temperature of a desensitizer in the presence of a developer at that time, the developer and the desensitizer. A warm color hue is displayed at a temperature of 10 deg.C or lower, a hue feeling the cool feeling of a cold color is displayed at the time of a high temperature for a summer period of 30 deg.C or higher, and a reversible change is performed easily.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature-sensitive laminated color floor material, and more specifically, the hue of the surface of a wooden floor material changes depending on the temperature. For example, it exhibits a warm hue at low temperatures in winter and a cold hue at high temperatures in summer. The present invention relates to a temperature-sensitive laminated color floor material capable of exhibiting a hue and allowing a person to feel a freshness, warmth, or a refreshing feeling due to the change in hue.

[0002]

TECHNICAL BACKGROUND OF THE INVENTION The current wooden floor materials that are commercially available as color floors are colored with ordinary coloring pigments, so that the hue of the floor material surface does not change due to the change of seasons. That is, in the current wood floor material, for example, a warm hue with a warm color system appears at low temperatures in winter when the temperature is 10 ° C or lower, and a cool refreshing feeling at the high temperature in summer when the temperature is 30 ° C or higher. It is not possible to change the hue such that a certain hue appears. Therefore, if you want to change the hue of the floor material after once using the existing wooden floor material as the floor material, either replace it with a floor material that has a different hue, or paint the existing floor material. It is necessary to peel off and repaint with a different color.

However, the current wooden floor material has a drawback that it requires a great deal of expense and time for re-attaching or re-painting the floor material. Therefore, it is possible to change the color of the color floor without replacing or repainting the floor material, giving the floor material a fresh feeling,
Moreover, the hues are easy to change depending on the temperature, such that warm colors such as warm colors appear at low temperatures in winter when the temperature is 10 ° C or lower, and cool colors such as cool colors appear at high temperatures in summer when the temperature is 30 ° C or higher. The advent of color flooring materials that change to 1 is desired.

[0004]

An object of the present invention is to change the color of a color floor without replacing or repainting the floor material, to give the floor material a fresh feeling, and at the time of low temperature in winter when the temperature is 10 ° C or less. We provide a temperature-sensitive laminated color floor material whose hue easily changes depending on the temperature, such that a warm hue of warm color appears, and a cool hue of cool color appears at high temperature in summer when it is over 30 ℃. The purpose is to do.

[0005]

SUMMARY OF THE INVENTION A temperature-sensitive laminated color floor material according to the present invention comprises a base material layer (a) made of a wood material and a temperature-sensitive sealer layer containing a temperature-sensitive agent that reversibly develops and discolors due to temperature change. (B) and a clear layer (c) made of synthetic resin paint
And are sequentially laminated.

The temperature-sensitive laminated color floor material according to the present invention comprises the temperature-sensitive sealer layer (b) and the clear layer (c) between the base material layer (a) and the temperature-sensitive sealer layer (b). A stain layer (d) consisting of a colored pigment type stain
May be formed.

Further, it is preferable that the clear layer contains an ultraviolet absorber and / or a light stabilizer.

[0008]

DETAILED DESCRIPTION OF THE INVENTION The temperature-sensitive laminated color floor material according to the present invention will be specifically described below. Base Material Layer (a) The base material layer (a) used in the present invention is composed of a wood material, and as such a wood material, a single plate of a name tree,
Conventionally known floor base materials whose surfaces are made of wood, such as a veneer-bonded plywood, a veneer-bonded particle board, and a veneer-bonded hardboard can be mentioned.

Temperature Sensitive Sealer Layer (b) The temperature sensitive sealer layer (b) used in the present invention contains a temperature sensitive agent in which color development and color erasing are reversibly caused by temperature change. The temperature sensitive agent may be used alone or in combination of two or more kinds.

The above-mentioned temperature-sensing agent is a compound having a lactone ring (a compound containing -CO-O- in the ring), specifically, a triphenylmethane compound, a spiropyran compound, and a fluorane compound having a lactone ring. Examples thereof include dyes such as compounds, phthalide compounds, rhodamine lactam compounds, and pigments of mercury (II) iodide complex salts.

Specific examples of the triphenylmethane compound having a lactone ring include CVL (crystal violet lactone). Specific examples of the spiropyran compound having a lactone ring include N, 3,3-trimethylindolinobenzospiropyran and 8-methoxy-
Examples include N, 3,3-trimethylindolinobenzospiropyran.

Specific examples of the fluoran compound having a lactone ring include 1,3-dimethyl-6-diethylaminofluorane (Orange-DCF; activated clay is colored orange), 2-bromo-3-methyl- 6-Dibutylaminofluorane (Vermil
ion-DCF; vermilion colored with phenolic resin), 6-dimethylaminobenzo [a] -fluorane (Red-DCF; deep red colored with activated clay), 2-N, N-dibenzylamino-6- Fluoran (Green-DCF; colored in green with clay), 2- (2-chloroanililo) -6-diethylaminofluorane (TH-10
6; Phenolic resin turns black), 2- (2-chloroanililo) -6-dibutylaminofluorane (TH-107; Bisphenol A turns black), 2-anililo-3-methyl-6
-Dibutylaminofluorane (TH-108; colored with bisphenol A in black), 2-anililo-3-methyl-6-diethylaminofluorane (TH-109; colored with bisphenol A in black) and the like.

Specific examples of the rhodamine lactam compound having a lactone ring include rhodamine B lactam. Specific examples of the mercury (II) iodide complex salt include Cu ₂ HgI ₄ (70 ° C., red → brown purple, 70 ° C., red ← brown purple), Ag ₂ HgI ₄ (50 ° C., yellow → orange, 5
0 ° C., yellow ← orange) and the like.

The temperature sensitive agent as described above is preferably used together with a color developing agent and a desensitizing agent. The color developer is a weakly acidic compound, and the desensitizer is a compound having an alcoholic hydroxyl group.

The color developer has a function of opening the lactone ring of the temperature-sensing agent to bring it into a resonance state. When the temperature-sensing agent is in such a resonance state, the temperature-sensitive agent opens the lactone ring to develop color, and when the temperature reaches a certain temperature, the alkaline desensitizer in the microcapsules changes from the solid state to the molten state and The agent erases color by closing the lactone ring. The coloring and decoloring of the temperature sensitive agent can be performed reversibly, and the coloring and decoloring of the temperature sensitive agent can be controlled by the desensitizing agent. Therefore, in the present invention, it is possible to select a color with a temperature-sensitive agent, color the temperature-sensitive agent with a color-developing agent to determine the color density, and determine a desired discoloration temperature depending on the type of desensitizing agent. .

Specific examples of the developer include activated clay, clay, phenol, o-cresol, p-cresol, p-ethylphenol, t-butylphenol, 2,6-di-t-butyl-4-methyl. Phenol, nonylphenol, dodecylphenol, 2,2'-methylenebis (4-methyl-6-t-butylphenol), d-naphthol, β-naphthol hydroquinone monomethyl ether, guaiacol, eugenol, p-chlorophenol, p-bromophenol, o-bromophenol, o-chlorophenol, 2,4,6-trichlorophenol, o-phenylphenol, p-phenylphenol, p- (p-chlorophenyl) phenol, o- (o-chlorophenyl) phenol, salicylic acid, p -Methyl oxybenzoate, ethyl p-oxybenzoate, ethyl p-oxybenzoate, propyl p-oxybenzoate, p-oxy Butyl benzoate, octyl p-oxybenzoate, dodecyl p-oxybenzoate, catechol, hydroquinone, resorcin, 3-methylcatechol, 3-isopropylcatechol,
pt-butylcatechol, 2,5-di-t-butylhydroquinone, 4,4'-methylenediphenol, bisphenol A,
1,2-dioxynaphthalene, 2,3-dioxynaphthalene, chlorcatechol, bromocatechol, 2,4-dihydroxybenzophenone, phenolphthalein, o-cresolphthalein, pyrogallol, oxyhydroquinone, phloroglucin, 2,4, 6-trioxymethylbenzene, 2,3,4-
Trioxyethylbenzene, gallic acid, methyl gallate, ethyl gallate, propyl gallate, butyl gallate, hexyl gallate, octyl gallate, dodecyl gallate, cetyl gallate, stearyl gallate, 2,3,5-trioxy Examples thereof include naphthalene, tannic acid, and phenolic resin.

As the desensitizer, a compound having an alcoholic hydroxyl group is used as described above. The compound having an alcoholic hydroxyl group includes monohydric alcohols to polyhydric alcohols and their derivatives.

Specifically, methyl alcohol, ethyl alcohol, propyl alcohol, butyl alcohol, hexyl alcohol, octyl alcohol, nonyl alcohol, decyl alcohol, lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, aicosyl alcohol, docosyl. Aliphatic saturated alcohols such as alcohol and melysyl alcohol; Aliphatic unsaturated alcohols such as allyl alcohol and oleyl alcohol; Alicyclic alcohols such as cyclohexanol and cyclopentanol; Aromatic alcohols such as benzyl alcohol and cinnamyl alcohol; Heterocyclic alcohols such as furfuryl alcohol; ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, pro Diene and its monoethers such as lenglycol, butylene glycol, hexylene glycol, cyclohexane-1,4-diol, ethylene glycol monoethyl ether, diethylene glycol monoethyl ether; glycerin, glyceryl monoacetate, trimethylolpropane, 1,2, Triols such as 6-hexanetriol and ethers thereof; polyols such as pentaerythritol, arabite, sorbite and mannite are used.

The temperature-sensitive sealer layer (b) preferably used in the present invention is a temperature-sensitive agent or color-developing agent in which color development and decoloring are reversibly caused by a change in the state of the desensitizer with temperature in the presence of the color-developing agent. And a temperature-sensitive sealer containing at least one microcapsule composed of a desensitizer.

For example, in a floor material in which a warm color hue appears at a temperature of 10 ° C. or lower, and a hue of the wood material base material constituting the base material layer (a) appears at a temperature of 10 ° C. or higher, the floor material develops a warm color tone. A microcapsule (1) comprising a temperature-sensitive agent exhibiting a hue, a desensitizer that changes from a solid state to a molten state at a temperature of 10 ° C., and a developer is used. In such a floor material, for example, a temperature-sensitive sealer layer (b) composed of a temperature-sensitive sealer containing the microcapsules (1) is formed on the surface of the base material layer (a), and then the temperature-sensitive sealer layer (b) is formed. It can be obtained by forming a clear layer (c) on the above. In such a floor material, since the temperature-sensitive sealer layer exhibits a warm hue at a temperature of 10 ° C or lower, a warm warm hue appears on the surface of the floor material, and at a temperature of 10 ° C or higher, this warm hue The hue disappears and the hue of the base material of the base material layer (a) appears on the surface of the floor material.

Further, a warm hue appears at a temperature of 10 ° C. or lower, an intermediate hue between a warm hue and a cold hue appears at a temperature of 10 to 30 ° C., and a cold hue appears at a temperature of 30 ° C. or higher. In the floor material that appears, microcapsules consisting of a temperature-sensing agent that develops a warm hue and a desensitizing agent that changes from a solid state to a molten state at a temperature of 10 ° C. and a developer.
(1), a temperature-sensing agent that develops color and exhibits an intermediate hue between a warm hue and a cold hue, a microcapsule comprising a desensitizer and a developer that change from a solid state to a molten state at a temperature of 30 ° C. (2) and can be used. In such a floor material, for example, a stain layer (d) having a cold hue described below is formed on the surface of the base material layer (a), and then the microcapsules (1) are formed on the stain layer (d). Obtained by forming a temperature-sensitive sealer layer (b) composed of a temperature-sensitive sealer containing a microcapsule (2) and then forming a clear layer (c) on the temperature-sensitive sealer layer (b). You can In such floor materials,
At a temperature of 10 ° C. or lower, the temperature-sensitive sealer layer (b) exhibits a warm hue and an intermediate hue between the warm hue and the cold hue, so a warm warm hue appears on the surface of the floor material, Further, at a temperature of 10 to 30 ° C., the warm hue of the temperature-sensitive sealer layer (b) is erased and exhibits an intermediate hue between the warm hue and the cold hue, so that the intermediate hue on the floor material surface Further, at a temperature of 30 ° C. or higher, the intermediate hue also disappears, and the cold hue of the stain layer (d) appears on the surface of the floor material.

Further, a warm hue appears at a temperature of 10 ° C. or lower, a hue that is almost the same as that of the base material of the substrate layer (a) appears at a temperature of 10 to 30 ° C., and a cold hue appears at a temperature of 30 ° C. or higher. In the floor material that appears, microcapsules consisting of a temperature-sensing agent that develops a warm hue and a desensitizer that changes from a solid state to a molten state at a temperature of 10 ° C and a developer (3)
And a microcapsule (4) consisting of a temperature-sensing agent that exhibits a colored hue, a desensitizing agent that changes from a solid state to a molten state at a temperature of 30 ° C., and a color developer, and exhibits a cold hue by developing a color. Microcapsules consisting of a temperature sensitive agent, a desensitizing agent that changes from a solid state to a molten state at a temperature of 45 ° C, and a color developer
The three types of microcapsules of (5) can be used. In this case, at a temperature of 10 ° C. or lower, the above-mentioned three types of temperature-sensitive agents develop color, and these hues are mixed with each other.
At the temperature of, the warm color of the thermosensitizer of the microcapsule (3) is erased and the cold hue of the thermosensitizer of the microcapsule (5) and the hue of the microcapsule (4) are mixed and the temperature exceeds 30 ° C. At temperature, only the cold hue of the temperature-sensing agent in the microcapsules (5) develops. Therefore, the above microcapsules
As the temperature-sensitive agent of (4), the above-mentioned three hues are mixed at a temperature of 10 ° C or lower to give a warm-colored hue, and at the temperature of 10 to 30 ° C, the cold-colored hue of the temperature-sensitive agent of the microcapsule (5). It suffices to select a temperature-sensing agent that mixes with the hue of the temperature-sensitive agent of the microcapsule (4) to develop a hue substantially the same as that of the base material layer (a). In determining the hue appearing on the surface of the floor material, it is necessary to determine not only the hue of each of the above three types of temperature sensitive agents but also the amount of these temperature sensitive agents to be used.

The above-mentioned microcapsules are prepared by dispersing a temperature sensitive agent and a color developer in a desensitizing agent. Such microcapsules are manufactured and sold by Hodogaya Chemical Co., Ltd. under the trade name of Kuromicolor.

The temperature-sensitive sealer layer (b) preferably used in the present invention is prepared by preparing a temperature-sensitive sealer comprising at least one type of microcapsules containing a temperature-sensitive agent capable of reversibly developing and erasing color and a vehicle. Then, the temperature-sensitive sealer is applied to the surface of the above-mentioned base material layer (a) and dried to form the temperature-sensitive sealer layer (b).

As the vehicle of the temperature-sensitive sealer, specifically, vinyl chloride resin, maleic acid resin, alkyd resin,
Acrylic resin, polyester resin, polyurethane resin,
An aqueous emulsion (for example, an aqueous emulsion of polyvinyl alcohol) or the like is used.

The coating method of the temperature-sensitive sealer is preferably coating with a coating machine such as a roll coater, a flow coater or a sprayer. The coating amount of the temperature-sensitive sealer varies depending on the solid content of the temperature-sensitive sealer, but is usually preferably 20 to 60 g / m ² .

When the coating amount of the temperature-sensitive sealer is within the above range, it is possible to obtain a change in hue suitable for the color floor with a suitable shade of color. Clear layer (c) As the synthetic resin paint for forming the clear layer (c) used in the present invention, specifically known aminoalkyd resin paints, UV-curable polyester resin paints, polyurethane resin paints, Marblack AL -FD [Product name; China Paint Co., Ltd.], Aulex No. 630 [product name; manufactured by China Paint Co., Ltd.], POLYURAC No. 200F
[Product name; manufactured by China Paint Co., Ltd.] and the like.

In the present invention, it is preferable to add an ultraviolet absorber or a light stabilizer into the clear synthetic paint from the viewpoint of durability of the floor material. These are preferably used in combination, but can be used alone. As the ultraviolet absorber and the light stabilizer, conventionally known ultraviolet absorbers and light stabilizers can be used respectively within a range not impairing the object of the present invention.

Specific examples of the UV absorber include TINUVIN 328 [product name; manufactured by Ciba Geigy] and TINUVIN 38.
4 [product name: manufactured by Ciba Geigy], Tinuvin 900 [product name: manufactured by Ciba Geigy], Tinuvin 1130 [product name: manufactured by Ciba Geigy], and the like.

Specific examples of the light stabilizer include Tinuvin 1
23 [Product name; manufactured by Ciba Geigy], Tinuvin 292
[Product name; manufactured by Ciba-Geigy] and the like. The clear synthetic resin coating method described above is preferably applied by a coating machine such as a roll coater, a flow coater, or a sprayer. The amount of the clear synthetic resin coating material applied varies depending on the solid content thereof, but is usually preferably ²⁰ to 100 g / m ² .

Stain layer (d) In the present invention, between the above-mentioned base material layer (a) and the temperature-sensitive sealer layer (b) or between the temperature-sensitive sealer layer (b) and the clear layer (c). If necessary, a stain layer (d) composed of a color pigment type stain can be formed.

The color pigment type stain used in the stain layer (d) is a colorant used for coloring wood, and conventionally known color pigment type stains can be used.

As the coloring pigment type stain, specifically, stain N [product name; manufactured by China Paint Co., Ltd.], stain C
-100 [Product Name: China Paint Co., Ltd.], Shading Stain [Product Name: Kansai Paint Co., Ltd.], Grand Base [Product Name: Natco Paint Co., Ltd.], Dick Stain [Product Name: Dai Nippon] Ink Chemical Industry Co., Ltd.]
And the like.

The color pigment type stain is preferably coated by a coating machine such as a reverse roll coater or a natural roll coater. The amount of stain applied is usually 10
˜50 g / m ² is preferred.

In the present invention, it is preferable to provide the stain layer (d), and it is particularly preferable to provide the stain layer (d) between the base material layer (a) and the temperature-sensitive sealer layer (b). The combination of the temperature-sensitive sealer layer (b) whose hue reversibly changes with temperature and the stain layer (d) composed of a normal color pigment type stain gives a temperature-sensitive laminated color floor material exhibiting a more comfortable hue. To be

Method for producing temperature-sensitive laminated color floor material The temperature-sensitive laminated color floor material according to the present invention is produced , for example, through the following steps (coloring and painting step).

First step: The base material of the veneer plywood such as oak veneer plywood is ground with a wide belt sander. Second step: Color pigment type stains are applied to the polished veneer plywood surface using a roll coater and dried to form a stain layer.

Third step: A temperature-sensitive sealer is coated and dried on the stain layer using a coater such as a roll coater, a flow coater or a sprayer to form a temperature-sensitive sealer layer.

Fourth step: On the temperature-sensitive sealer layer, a clear synthetic resin paint such as polyurethane resin paint, amino alkyd paint, UV-curable polyester resin paint, etc. is undercoated by using a coating machine such as a roll coater, a flow coater or a sprayer. dry.

Fifth step: The surface of the undercoat coating film is polished with a wide belt sander. Sixth step: Top-coating a clear synthetic resin paint such as polyurethane resin paint, aminoalkyd resin paint, and UV-curable polyester resin paint on the surface of the undercoat film after the above polishing using a coating machine such as a roll coater, a flow coater, or a spray. dry.

[0041]

The temperature-sensitive laminated color floor material according to the present invention comprises a base material layer (a) made of a wood material and a temperature-sensitive sealer layer containing a temperature-sensitive agent that reversibly develops and discolors due to temperature change. (B) and a clear layer (c) made of synthetic resin paint
Since and are sequentially laminated, you can change the color of the color floor without re-painting or repainting the floor material,
It can give a fresh feeling to the floor material, and a hue that makes you feel the warmth of warm colors appears in the low temperature in winter when the temperature is 10 ° C or lower, and feels a cool color in the high temperature in summer when it is 30 ° C or higher. It is possible to reversibly and easily change the hue such that the hue to be caused appears.

The present invention will be described below with reference to examples.
The present invention is not limited to these examples.

[0043]

Example 1 A floor wood material made of oak veneer plywood having a thickness of 12 mm, a width of 30.3 cm, and a length of 181.8 cm, in which a oak veneer having a thickness of 0.3 mm was attached to the surface, was ground with a wide belt sander.

Next, a colored pigment type stain [Product name: stain N, China Paint Co., Ltd.
Made with a coloring roll coater composed of a sponge roll, a reverse scraping roll, and a natural rubber roll.
It was dried to form a stain layer.

Next, on this stain layer, a temperature-sensitive agent which develops red at 10 ° C. or lower and disappears at 10 ° C. or higher, and 30
40 g / m of a temperature sensitive sealer (PVC color sealer) prepared by blending 5% of each temperature sensitive agent that develops yellow at 30 ° C or lower and decolorizes at 30 ° C or higher with a natural roll coater.
² Coating and drying were performed to form a temperature-sensitive sealer layer.

Then, on the temperature-sensitive sealer layer, a polyurethane resin coating [Product name: Polyurac No. A 200 F sanding sealer manufactured by China Paint Co., Ltd. was applied with a natural roll coater at 40 g / cm ² and dried to form an undercoat layer.

Then, only the surface layer of this undercoat layer was polished with a wide belt sander. Then, an ultraviolet absorbent (product name: Tinuvin 32) was applied to the surface of the coating of the undercoat layer after the polishing.
No. 8, manufactured by Ciba-Geigy) 2% and a light stabilizer (product name Tinuvin 123, manufactured by Ciba-Geigy) 0.5% were added to the polyurethane resin coating [product name Polyurac No. 200F semi-gloss, manufactured by China Paint Co., Ltd.] with a flow coater at 60 g / m
^Two coats were applied and dried to form an overcoat layer.

The color floor material obtained as described above exhibits a slightly reddish orange color (warm color hue) at a temperature of 10 ° C. or lower, and at a temperature of 10 to 30 ° C.
Has a slightly yellowish oak color (intermediate hue), 30
It was a temperature-sensitive color floor material that exhibited light blue (coolish hue with a cool sensation) at temperatures above ℃.

[0049]

Example 2 A wooden flooring material made of oak veneer plywood having a thickness of 15 mm, a width of 15 cm, and a length of 181.8 cm with a 2.0 mm oak veneer attached to the surface was ground with a wide belt sander.

Then, on the surface of the polished oak veneer plywood,
20 g / m ^{2 of a} temperature-sensitive sealer (PVC color sealer red) prepared by mixing 10% of a temperature-sensitive agent that develops red at 15 ° C or lower and disappears at 15 ° C or higher with a natural roll coater.
After coating and drying, a temperature-sensitive sealer layer was formed.

Then, on the temperature-sensitive sealer layer, a coloring pigment type stain [Product name: Stain C-100, manufactured by China Paint Co., Ltd.] to which a coating solution toned in a natural oak color was applied was sponge-rolled. And a reverse roll scraper and a coloring roll coater composed of a natural rubber roll, and dried to form a stain layer.

Then, an aminoalkyd resin coating [Product name: Marblack AL-FD, manufactured by China Paint Co., Ltd.] was applied on the stain layer with a natural roll coater at 30 g / c.
m ^{2 was} applied and dried to form an undercoat layer. The amino alkyd resin coating used in this coating was preliminarily coated with 10 alumina in advance, which is widely used in order to improve wear resistance. [Abrasive agent: White Morundum WA-500, Showa Denko KK] % Had been added.

Then, only the surface layer of this undercoat layer was polished with a wide belt sander. Then, an ultraviolet absorbent (product name: Tinuvin 328
An amino alkyd resin paint [Product name: Marblack AL-FD 7 minutes gloss, manufactured by China Paint Co., Ltd.] containing 2% of Ciba Geigy] was applied with a flow coater at 50 g / m ² and dried to form a topcoat layer.

The color flooring material obtained as described above exhibits a slightly reddish mahogany color at a temperature of 15 ° C. or lower, and a natural oak color close to that of oak veneer at a temperature of 15 ° C. or higher. It was a temperature-sensitive color flooring material exhibiting.

Claims (3)

[Claims] 1. A base material layer (a) made of a wood material, a temperature-sensitive sealer layer (b) containing a temperature-sensitive agent that reversibly develops and decolors due to temperature change, and a clear layer made of synthetic resin paint. A temperature-sensitive laminated color floor material, characterized in that (c) and (c) are sequentially laminated. 2. A base material layer (a) and a temperature-sensitive sealer layer (b).
The stain layer (d) made of a color pigment type stain is formed between the temperature-sensitive sealer layer (b) and the temperature-sensitive sealer layer (b) and the clear layer (c). Temperature-sensitive laminated color floor material. 3. The clear layer contains an ultraviolet absorber and / or a light stabilizer.
Or the temperature-sensitive laminated color floor material described in 2.