Patent Description:
Since the floor first has arisen, it is common to set a wear-resistant layer on the outermost side of the floor to improve the wear resistance of the floor, but the setting of the wear-resistant layer would result in reduced hardness, which limits the application of the floor.

In order to solve the problem of low hardness, the wear-resistant layer is replaced with a UV layer; that is to say, after laminating and embossing, the UV coating is applied by roll coating to achieve the wear-resistant performance. Due to the large amount of the UV coating applied, the texture and embossing effect are greatly reduced after applying the UV coating by roll coating, which adversely affects the appearance of the floor. After applying the coating, the surface texture is filled with UV coating, which greatly reduces the three-dimensional effect of the texture and adversely affects the appearance of the overall product.

<CIT> discloses a floor panel and method for manufacturing a floor panel; the floor panel includes a substrate and a top layer provided above, wherein the top layer includes a decor layer, a thermoplastic wear layer and a lacquer layer provided above; and the floor panel has an upper surface showing a relief and the wear layer and the lacquer layer are embossed in order to form the relief. <CIT> discloses an embossable coating and method of producing embossed coated substrate; and the method including applying to the substrate an embossable coating, drying the applied coating and then conducting pressure contact to impress a decorative design into the coating. <CIT> discloses scuff resistant decorative surface coverings, including one or more polymer layer(s) and crosslinked top-layer, combining excellent anti-slip properties and scuff resistance.

In view of this, an object of the present disclosure is to provide a method for treating a surface of a floor, which enables that the obtained embossed floor has a clear texture, and meanwhile exhibits excellent wear resistance and hardness.

In order to achieve the above-mentioned object of the disclosure, the present disclosure provides the following technical solutions:.

Provided is a method for treating a surface of a floor, comprising steps of.

In some embodiments, the wear-resistant primer comprises, in percentages by mass, <NUM>-<NUM>% of polyurethane acrylate, <NUM>-<NUM>% of <NUM>,<NUM>-hexamethylene diacrylate, <NUM>-<NUM>% of aluminum oxide, <NUM>-<NUM>% of a photoinitiator, and <NUM>-<NUM>% of silica.

In some embodiments, the wear-resistant primer is applied in an amount of not less than <NUM>/m<NUM>.

In some embodiments, the leveling primer comprises, in percentages by mass, <NUM>-<NUM>% of polyurethane acrylate, <NUM>-<NUM>% of <NUM>,<NUM>-hexamethylene diacrylate, <NUM>-<NUM>% of a photoinitiator, and <NUM>-<NUM>% of silica.

In some embodiments, the leveling primer is applied in an amount of <NUM>-<NUM>/m<NUM>.

In some embodiments, the leveling primer is replaced with a sanding coating, wherein the sanding coating comprises, in percentages by mass, <NUM>-<NUM>% of polyurethane acrylate, <NUM>-<NUM>% of tri(propylene glycol) diacrylate, <NUM>-<NUM>% of ethoxylated trimethylolpropane triacrylate, <NUM>-<NUM>% of a photoinitiator, and <NUM>-<NUM>% of talc.

In some embodiments, the sanding coating is applied in an amount of <NUM>-<NUM>/m<NUM>.

In some embodiments, the embossing is performed at a temperature of <NUM>-<NUM>.

In some embodiments, the topcoat is applied in an amount of not less than <NUM>/m<NUM>.

Provided is a method for treating a surface of a floor, which comprises steps of applying a wear-resistant primer and a leveling primer in sequence onto a blank floor, to obtain a precursor plate; subjecting the precursor plate to an embossing, and applying a topcoat thereon, to obtain an embossed floor.

Compared with traditional methods for preparing floors, in the method according to the present disclosure, an embossing is performed not directly after laminating but after applying a wear-resistant primer, and a topcoat is then applied. Therefore, only a topcoat is applied after the embossing, and thus the resulting embossed pattern has a clear and three-dimensional texture.

Further, in the present disclosure, the composition of the wear-resistant primer and the leveling primer could be optimized, such that the wear-resistant primer and the leveling primer could withstand the pressure for embossing. That is to say, they would not be broken due to the pressure for embossing. Further, the composition of the wear-resistant primer could be optimized such that the wear-resistant primer layer exhibits excellent wear resistance and hardness, thereby imparting excellent wear resistance and hardness to the floor.

The present disclosure provides a method for treating a surface of a floor, comprising steps of.

In the present disclosure, unless otherwise specified, the raw materials used in the present disclosure are preferably commercially available products.

In the present disclosure, the wear-resistant primer and the leveling primer are sequentially applied onto a blank floor, to obtain a precursor plate.

In some embodiments of the present disclosure, the wear-resistant primer comprises, in percentages by mass, <NUM>-<NUM>% of polyurethane acrylate, <NUM>-<NUM>% of <NUM>,<NUM>-hexamethylene diacrylate, <NUM>-<NUM>% of aluminum oxide, <NUM>-<NUM>% of a photoinitiator, and <NUM>-<NUM>% of silica.

In some embodiments of the present disclosure, the wear-resistant primer comprises <NUM>-<NUM>% by mass of polyurethane acrylate, preferably <NUM>-<NUM>%, and more preferably <NUM>%. In some embodiments of the present disclosure, the polyurethane acrylate has a <NPL>.

In some embodiments of the present disclosure, the wear-resistant primer comprises <NUM>-<NUM>% by mass of <NUM>,<NUM>-hexamethylene diacrylate, preferably <NUM>-<NUM>%, and more preferably <NUM>%. In some embodiments of the present disclosure, the <NUM>,<NUM>-hexamethylene diacrylate has a <NPL>.

In some embodiments of the present disclosure, the wear-resistant primer comprises <NUM>-<NUM>% by mass of aluminum oxide, preferably <NUM>-<NUM>%, and more preferably <NUM>%. In some embodiments of the present disclosure, the aluminum oxide has a particle size of <NUM>-<NUM>. In some embodiments of the present disclosure, the aluminum oxide has a <NPL>.

In some embodiments of the present disclosure, the wear-resistant primer comprises <NUM>-<NUM>% by mass of a photoinitiator, preferably <NUM>-<NUM>%, and more preferably <NUM>%. In some embodiments of the present disclosure, the photoinitiator is <NUM>-hydroxycyclohexyl phenyl ketone. In some embodiments, and the photoinitiator has a <NPL>.

In some embodiments of the present disclosure, the wear-resistant primer comprises <NUM>-<NUM>% by mass of silica, preferably <NUM>-<NUM>%, and more preferably <NUM>-<NUM>%. In some embodiments of the present disclosure, the silica has a particle size of <NUM>-<NUM>. In some embodiments of the present disclosure, the silica has a <NPL>.

In some embodiments of the present disclosure, the wear-resistant primer is applied in an amount of not less than <NUM>/m<NUM>, and preferably <NUM>-<NUM>/m<NUM>.

In some embodiments of the present disclosure, the wear-resistant primer is applied for at least one times, and preferably <NUM>-<NUM> times.

In some embodiments of the present disclosure, the composition of the wear-resistant primer is optimized such that it could withstand the pressure for the subsequent embossing, so as to prevent the wear-resistant primer from breaking and deforming during the embossing. Further, the optimization of the composition of the wear-resistant primer impart excellent wear resistance and hardness to the floor.

In some embodiments of the present disclosure, the leveling primer comprises, in percentages by mass, <NUM>-<NUM>% of polyurethane acrylate, <NUM>-<NUM>% of <NUM>,<NUM>-hexamethylene diacrylate, <NUM>-<NUM>% of a photoinitiator, and <NUM>-<NUM>% of silica.

In some embodiments of the present disclosure, the leveling primer comprises <NUM>-<NUM>% by mass of polyurethane acrylate, preferably <NUM>-<NUM>%, and more preferably <NUM>%. In some embodiments of the present disclosure, the polyurethane acrylate has a <NPL>.

In some embodiments of the present disclosure, the leveling primer comprises <NUM>-<NUM>% by mass of <NUM>,<NUM>-hexamethylene diacrylate, preferably <NUM>-<NUM>%, and more preferably <NUM>%. In some embodiments of the present disclosure, the <NUM>,<NUM>-hexamethylene diacrylate has a <NPL>.

In some embodiments of the present disclosure, the leveling primer comprises <NUM>-<NUM>% by mass of a photoinitiator, preferably <NUM>-<NUM>%, and more preferably <NUM>%. In some embodiments of the present disclosure, the photoinitiator is <NUM>-hydroxycyclohexyl phenyl ketone. In some embodiments, the photoinitiator has a <NPL>.

In some embodiments of the present disclosure, the leveling primer comprises <NUM>-<NUM>% by mass of silica, preferably <NUM>-<NUM>%, and more preferably <NUM>-<NUM>%. In some embodiments of the present disclosure, the silica has a particle size of <NUM>-<NUM>. In some embodiments of the present disclosure, the silica has a <NPL>.

In some embodiments of the present disclosure, the leveling primer is applied in an amount of <NUM>-<NUM>/m<NUM>, and preferably <NUM>/m<NUM>.

In some embodiments of the present disclosure, as an alternative, the leveling primer is replaced with a sanding coating.

In some embodiments of the present disclosure, the sanding coating comprises in percentages by mass, <NUM>-<NUM>% of polyurethane acrylate, <NUM>-<NUM>% of tri(propylene glycol) diacrylate, <NUM>-<NUM>% of ethoxylated trimethylolpropane triacrylate, <NUM>-<NUM>% of a photoinitiator, and <NUM>-<NUM>% of talc.

In some embodiments of the present disclosure, the sanding coating comprises <NUM>-<NUM>% by mass of polyurethane acrylate, preferably <NUM>-<NUM>%, and more preferably <NUM>-<NUM>%. In some embodiments of the present disclosure, the polyurethane acrylate has a <NPL>.

In some embodiments of the present disclosure, the sanding coating comprises <NUM>-<NUM>% by mass of tri(propylene glycol) diacrylate, preferably <NUM>-<NUM>%, and more preferably <NUM>%. In some embodiments of the present disclosure, the tri(propylene glycol) diacrylate has a <NPL>.

In some embodiments of the present disclosure, the sanding coating comprises <NUM>-<NUM>% by mass of ethoxylated trimethylolpropane triacrylate, and preferably <NUM>-<NUM>%. In some embodiments of the present disclosure, the ethoxylated trimethylolpropane triacrylate has a <NPL>.

In some embodiments of the present disclosure, the sanding coating comprises <NUM>-<NUM>% by mass of a photoinitiator, and preferably <NUM>-<NUM>%. In some embodiments of the present disclosure, the photoinitiator has a <NPL>.

In some embodiments of the present disclosure, the sanding coating comprises <NUM>-<NUM>% by mass of talc, preferably <NUM>-<NUM>%, and more preferably <NUM>-<NUM>%. In some embodiments of the present disclosure, the talc has a <NPL>.

In some embodiments of the present disclosure, the sanding coating is applied in an amount of <NUM>-<NUM>/m<NUM>.

In the present disclosure, after the precursor plate is obtained, the precursor plate is subjected to an embossing, and a topcoat is then applied thereon, to obtain an embossed floor.

In some embodiments of the present disclosure, the embossing is performed at a temperature of <NUM>-<NUM>.

In some embodiments of the present disclosure, the topcoat comprises <NUM>-<NUM>% by mass of polyurethane acrylate, and preferably <NUM>-<NUM>%. In some embodiments of the present disclosure, the polyurethane acrylate has a <NPL>.

In some embodiments of the present disclosure, the topcoat comprises <NUM>-<NUM>% by mass of <NUM>,<NUM>-hexamethylene diacrylate and preferably <NUM>-<NUM>%. In some embodiments of the present disclosure, the <NUM>,<NUM>-hexamethylene diacrylate has a <NPL>.

In some embodiments of the present disclosure, the topcoat comprises <NUM>-<NUM>% by mass of aluminum oxide, and preferably <NUM>-<NUM>%. In some embodiments of the present disclosure, the aluminum oxide has a particle size of <NUM>-<NUM>. In some embodiments, the aluminum oxide has a <NPL>.

In some embodiments of the present disclosure, the topcoat comprises <NUM>-<NUM>% by mass of a photoinitiator, and preferably <NUM>-<NUM>%. In some embodiments of the present disclosure, the photoinitiator has a <NPL>.

In some embodiments of the present disclosure, the topcoat comprises <NUM>-<NUM>% by mass of silica, and preferably <NUM>%. In some embodiments of the present disclosure, the silica has a particle size of <NUM>-<NUM>. In some embodiments of the present disclosure, the silica has a <NPL>.

In some embodiments of the present disclosure, the topcoat is applied in an amount of not less than <NUM>/m<NUM>, and preferably <NUM>-<NUM>/m<NUM>.

In some embodiments of the present disclosure, the topcoat is applied for at least one times, and preferably twice.

The method for treating a surface of a floor according to the present disclosure will be described in detail below with reference to the examples. However, the examples should not be construed as limiting the scope of the present disclosure.

A wear-resistant primer and a leveling primer were sequentially applied onto a SPC blank floor, obtaining a precursor plate.

The wear-resistant primer consisted of the following components, in percentages by mass: <NUM>% of polyurethane acrylate (<NUM>-<NUM>-<NUM>), <NUM>% of <NUM>,<NUM>-hexamethylene diacrylate (<NUM>-<NUM>-<NUM>), <NUM>% of aluminum oxide (<NUM>-<NUM>-<NUM>), <NUM>% of the photoinitiator (<NUM>-<NUM>-<NUM>), and <NUM>% of silica (<NUM>-<NUM>-<NUM>). The wear-resistant primer was applied in three times, each in an amount of <NUM>/m<NUM>.

The leveling primer consisted of the following components, in percentages by mass: <NUM>% of polyurethane acrylate (<NUM>-<NUM>-<NUM>), <NUM>% of <NUM>,<NUM>-hexamethylene diacrylate (<NUM>-<NUM>-<NUM>), <NUM>% of the photoinitiator (<NUM>-<NUM>-<NUM>), and <NUM>% of silica (<NUM>-<NUM>-<NUM>). The leveling primer was applied once, in an amount of <NUM>/m<NUM>.

After the precursor plate was obtained, the precursor plate was subjected to an embossing treatment, and a topcoat was then applied thereon, obtaining an embossed floor.

The embossing was performed at a temperature of <NUM>.

The topcoat consisted of the following components, in percentages by mass: <NUM>% of polyurethane acrylate (<NUM>-<NUM>-<NUM>), <NUM>% of <NUM>,<NUM>-hexamethylene diacrylate (<NUM>-<NUM>-<NUM>), <NUM>% of aluminum oxide (<NUM>-<NUM>-<NUM>), <NUM>% of the photoinitiator (<NUM>-<NUM>-<NUM>), and <NUM>% of silica (<NUM>-<NUM>-<NUM> ). The topcoat was applied in <NUM> times, a first application in an amount of <NUM>/m<NUM>, and a second application in an amount of <NUM>/m<NUM>.

<FIG> is a photography of real object of the embossed floor obtained in Example <NUM>.

A wear-resistant primer and a sanding coating were applied in sequence onto a SPC blank floor, obtaining a precursor plate.

The wear-resistant primer consisted of the following components, in percentages by mass: <NUM>% of polyurethane acrylate (<NUM>-<NUM>-<NUM>), <NUM>% of <NUM>,<NUM>-hexamethylene diacrylate (<NUM>-<NUM>-<NUM>), <NUM>% of aluminum oxide (<NUM>-<NUM>-<NUM>), <NUM>% of the photoinitiator (<NUM>-<NUM>-<NUM>), and <NUM>% of silicon dioxide (<NUM>-<NUM>-<NUM>). The wear-resistant primer was applied twice, each in an amount of <NUM>/m<NUM>.

The sanding coating consisted of the following components, in percentages by mass: <NUM>% of polyurethane acrylate (<NUM>-<NUM>-<NUM>), <NUM>% of tri(propylene glycol) diacrylate (<NUM>-<NUM>-<NUM>), <NUM>% of ethoxylated trimethylolpropane triacrylate (<NUM>-<NUM>-<NUM>), <NUM>% of the photoinitiator (<NUM>-<NUM>-<NUM>), and <NUM>% of talc (<NUM>-<NUM>-<NUM>). The sanding coating was applied once, in an amount of <NUM>/m<NUM>.

After the precursor plate was obtained, the precursor plate was subjected to an embossing, and a topcoat was then applied thereon, obtaining an embossed floor.

The topcoat consisted of the following components, in percentages by mass: <NUM>% of polyurethane acrylate (<NUM>-<NUM>-<NUM>), <NUM>% of <NUM>,<NUM>-hexamethylene diacrylate (<NUM>-<NUM>-<NUM>), <NUM>% of aluminum oxide (<NUM>-<NUM>-<NUM>), <NUM>% of the photoinitiator (<NUM>-<NUM>-<NUM>), and <NUM>% of silica (<NUM>-<NUM>-<NUM>). The topcoat was applied twice, each in an amount of <NUM>/m<NUM>.

A wear-resistant primer and a leveling primer were applied sequentially onto a SPC blank floor, obtaining a precursor plate.

The wear-resistant primer consisted of the following components, in percentages by mass: <NUM>% of polyurethane acrylate (<NUM>-<NUM>-<NUM>), <NUM>% of <NUM>,<NUM>-hexamethylene diacrylate (<NUM>-<NUM>-<NUM>), <NUM>% of aluminum oxide (<NUM>-<NUM>-<NUM>), <NUM>% of the photoinitiator (<NUM>-<NUM>-<NUM>), and <NUM>% of silicon dioxide (<NUM>-<NUM>-<NUM>). The wear-resistant primer was applied once, in an amount of <NUM>/m<NUM>.

The leveling primer consisted of the following components, in percentages by mass: <NUM>% of polyurethane acrylate (<NUM>-<NUM>-<NUM>), <NUM>% of <NUM>,<NUM>-hexamethylene diacrylate (<NUM>-<NUM>-<NUM>), <NUM>% of the photoinitiator (<NUM>-<NUM>-<NUM>), and <NUM>% of silicon dioxide (<NUM>-<NUM>-<NUM>). The leveling primer was applied once, in an amount of <NUM>/m<NUM>.

After the precursor plate was obtained, the precursor plate was subjected to an embossing and a topcoat was then applied, obtaining an embossed floor.

The topcoat consisted of the following components, in percentages by mass: <NUM>% of polyurethane acrylate (<NUM>-<NUM>-<NUM>), <NUM>% of <NUM>,<NUM>-hexamethylene diacrylate (<NUM>-<NUM>-<NUM>), <NUM>% of aluminum oxide (<NUM>-<NUM>-<NUM>), <NUM>% of the photoinitiator (<NUM>-<NUM>-<NUM>), and <NUM>% of silica (<NUM>-<NUM>-<NUM>). The topcoat was applied twice, a first application in an amount of <NUM>/m<NUM>, and a second application in an amount of <NUM>/m<NUM>.

The sanding coating consisted of the following components, in percentages by mass: <NUM>% of polyurethane acrylate (<NUM>-<NUM>-<NUM>), <NUM>% of tri(propylene glycol) diacrylate (<NUM>-<NUM>-<NUM>), <NUM>% of ethoxylated trimethylolpropane triacrylate (<NUM>-<NUM>-<NUM>), <NUM>% of the photoinitiator (<NUM>-<NUM>-<NUM>), <NUM>% of talc (<NUM>-<NUM>-<NUM>). The sanding coating was applied once in an amount of <NUM>/m<NUM>.

After the precursor plate was obtained, the precursor plate was subjected to an embossing and a topcoat was then applied thereon, obtaining an embossed floor.

The topcoat consisted of the following components in percentages by mass: <NUM>% of polyurethane acrylate (<NUM>-<NUM>-<NUM>), <NUM>% of <NUM>,<NUM>-hexamethylene diacrylate (<NUM>-<NUM>-<NUM>), <NUM>% of aluminum oxide (<NUM>-<NUM>-<NUM>), <NUM>% of the photoinitiator (<NUM>-<NUM>-<NUM>), and <NUM>% of silica (<NUM>-<NUM>-<NUM>). The topcoat was applied twice, a first application in an amount of <NUM>/m<NUM>, and a second application in an amount of <NUM>/m<NUM>.

The wear resistance of the embossed floors obtained in Examples <NUM> to <NUM> and the floor purchased from JIANGSU KENTIER WOOD CO. , CHINA was measured according to EN13329 method. The results are shown in Table <NUM>.

The hardness of the embossed floors obtained in Examples <NUM> to <NUM> and the floor purchased from JIANGSU KENTIER WOOD CO. , CHINA was measured according to ISO <NUM> method. The results are shown in Table <NUM>.

Claim 1:
A method for treating a surface of a floor, comprising steps of
applying a wear-resistant primer and a leveling primer in sequence onto a blank floor, to obtain a precursor plate; and
subjecting the precursor plate to an embossing, and applying a topcoat thereon, to obtain an embossed floor;
wherein the blank floor comprises at least one selected from the group consisting of a stone plastic composites floor and a polyvinyl chloride foamed floor; and
the topcoat comprises, in percentages by mass,
<NUM>-<NUM>% of polyurethane acrylate, <NUM>-<NUM>% of <NUM>,<NUM>-hexamethylene diacrylate, <NUM>-<NUM>% of aluminum oxide, <NUM>-<NUM>% of a photoinitiator, and <NUM>-<NUM>% of silica.