KR100723364B1 - Wallpaper with luminescence and reduction of sick house syndrome - Google Patents

Abstract

The present invention relates to a photoluminescent wallpaper for reducing birdhouse syndrome, and more particularly, to include a print layer and a support layer, to reduce the birdhouse syndrome by using no plasticizer, and to include a photoluminescent enhancing material This relates to an improved wallpaper.

Birdhouse syndrome, surface layer, adhesive layer, printed layer, support layer

Description

WALLPAPER WITH LUMINESCENCE AND REDUCTION OF SICK HOUSE SYNDROME}

The present invention relates to a photoluminescent wallpaper for reducing birdhouse syndrome, and more particularly, to include a print layer and a support layer, to reduce the birdhouse syndrome by using no plasticizer, and to include a photoluminescent enhancing material This relates to an improved wallpaper.

New house syndrome means that when building a residential building such as an apartment or a house, the volatile organic compounds or endocrine-causing substances that are contained in the interior material itself, such as flooring or wallpaper, or used in the installation thereof are gradually released, thereby making the residence in the new house. It is a phenomenon that a person's health deteriorates and it becomes a big social problem in recent years.

Currently, most commonly used wallpaper is PVC-based, and PVC contains chlorine in the polymer chain, which generates dioxin, which is classified as a carcinogen or endocrine-causing substance during combustion, and generates highly corrosive, highly toxic hydrogen chloride gas. . In addition, plasticizers, which are essentially added during PVC processing, are defined as endocrine-causing agents. In addition, with the improvement of living standards, the residential environment and living environment are being upgraded and diversified, creating a new concept wallpaper.

Photoluminescence absorbs light sources in all areas including sunlight and fluorescent light as energy and converts the light energy emitted in the dark into visible light to emit light by itself. Repeat and lifespan is semi-permanent. When applied to the wallpaper of underground spaces, large buildings, apartments, houses, and public facilities where natural light is blocked, it can provide emergency induction during power outages and guide functions when power is turned off or lights out at night.

The object of the present invention is composed of four layers of surface layer, adhesive layer, printing layer, and support layer, there is no generation of hydrogen chloride gas or dioxin during combustion by not using PVC, and volatile organic compounds are not released by using no plasticizer. It is to provide a luminous wallpaper that satisfies safety at the time of power failure, when the power is turned off and is turned off by reducing the sick house syndrome and including a photoluminescent enhancing material.

The wallpaper according to the present invention is a wallpaper comprising a print layer and a support layer, characterized in that the print layer comprises a photoluminescent agent. In addition, the wallpaper according to the present invention may have a structure in which a surface layer is further laminated on the printed layer via an adhesive layer, and in this case, a photoluminescent agent is included in the surface layer.

The resin composition constituting the printing layer included in the wallpaper of the present invention comprises one of a polypropylene resin, a polypropylene resin-polyethylene resin mixture, a polypropylene resin-rubber mixture, and ethylene vinyl acetate resin as the base resin.

In the polypropylene resin, the polypropylene resin-polyethylene resin mixture, and the polypropylene resin-rubber mixture included in the printing layer, the polypropylene resin may be a polypropylene homopolymer or air having a melt flow index of 0.3 to 30 g / 10 minutes. Copolymer resin is usable, and when the melt flow index is less than 0.3 g / 10 min, the resin flowability is lowered, and when it exceeds 30 g / 10 min, mechanical properties deteriorate. When polypropylene copolymer resin is used, the comonomer content is preferably 0.1 to 70% by weight in view of resin processability and mechanical properties, and the comonomer is preferably an α-olefin other than propylene, particularly ethylene. The polypropylene copolymer resin includes both a random copolymer and a block copolymer.

In the polypropylene resin-polyethylene resin mixture included in the printing layer, the polyethylene resin may have a density of 0.915-0.95 g / cm 3 and a melt flow index of 0.05-30 g / 10 min. It is preferable in terms of. In the polypropylene resin-polyethylene resin mixture, the mixing ratio of the polypropylene resin / polyethylene resin is preferably 95/5 to 50/50 in terms of weight ratio in that the desired mechanical properties can be obtained.

In the polypropylene resin-rubber mixture included in the printing layer, the rubber may include hydrogenated styrene-butadiene rubber (HSBR), styrene- (ethylene / butadiene) -styrene block copolymer (Styrene) One of-(ethylene / butadiene) -Styrene Block Copolymer (SEBS) and ethylene-propylene-diene terpolymer (EPDM) is available. In the case of the hydrogenated styrene-butadiene rubber (HSBR) and styrene- (ethylene / butadiene) -styrene block copolymer (SEBS), both have a styrene content of 5 to 30% by weight, specific gravity of 0.85 to 0.97, It is preferable that the melt flow index is 1.0 to 20 g / 10 minutes in view of resin processability and mechanical properties. In addition, the mixing ratio of the rubber with the polypropylene resin is preferably from the viewpoint that the polypropylene resin / rubber is 95/5 ~ 70/30 by weight ratio to obtain the desired mechanical properties.

The ethylene vinyl acetate resin that may be included in the print layer, the vinyl acetate content is 10 to 50% by weight, the melt flow index (Melt Index) is 0.3 ~ 30g / 10 minutes is preferable in terms of resin processability and mechanical properties.

In the wallpaper according to the present invention, a blowing agent may be further included in the resin composition of the printing layer.

The blowing agent which may be included in the resin composition of the printing layer, at least one selected from azo compounds, nitroso-based compounds and sulfonylhydrazide-based compounds having a decomposition temperature of 130 to 190 ° C, azodicarbonamide, N , N'-dinitrosopentamethylenetetramine, p-toluenesulfonylhydrazide, p, p'-oxybis (benzenesulfonylhydrazide), p-toluenesulfonyl semicarba, azobisisobutyronitrile, Preferably, at least one is selected from the group consisting of diazoaminoazobenzene and sodium dicarbonate. It is preferable that the said foaming agent is contained in the resin composition of the said printing layer 0.1-10 weight part with respect to 100 weight part of base resins contained in the resin composition of the said printing layer. If the content of the blowing agent is less than 0.1 parts by weight, the hardness and specific gravity is very high, if the content of more than 10 parts by weight can not be obtained a foam of a stable cell structure by excessive foaming has a disadvantage that the mechanical properties of the foam is sharply reduced.

The wallpaper according to the present invention preferably comprises a support layer comprising one of polypropylene nonwoven fabric, polyester nonwoven fabric, low density polyethylene foam, ethylene vinyl acetate foam and paper in the lower layer of the printing layer.

The polypropylene nonwoven fabric that may be included in the support layer is preferably manufactured using a polypropylene homopolymer or copolymer resin having a melt flow index of 0.3 to 30 g / 10 minutes, and the melt flow index is less than 0.3 g / 10 minutes. And resin flow property falls and when it exceeds 30g / 10min, mechanical property will worsen. When polypropylene copolymer resin is used, the comonomer content is preferably 0.1 to 70% by weight in view of resin processability and mechanical properties.

In addition, the polyester nonwoven fabric which may be included in the support layer is preferably a polyester nonwoven fabric having a melt flow index of 0.1 to 60 g / 10 minutes and a nonwoven fabric of 10 to 200 g / m 2 in terms of resin processability and mechanical properties, The low density polyethylene foam which may be included in the support layer is preferably a foam of low density polyethylene resin having a density of 0.915 to 0.95 g / cm 3 and a melt flow index of 0.05 to 30 g / 10 minutes in view of resin processability and mechanical properties. The ethylene vinyl acetate foam which may be included in the support layer is a foam of ethylene-vinylacetate (EVA) copolymer resin having a vinyl acetate content of 10 to 50% by weight and a melt flow index of 0.3 to 30 g / 10 minutes. It is preferable in terms of properties.

The printing layer is adhered to the support layer by heat bonding, and no adhesive or other organic solvent is used.

It is preferable that the wallpaper of this invention further contains the surface layer for providing scratch resistance and stain resistance to the wallpaper surface on the said printing layer. The surface layer further included in the wallpaper of the present invention preferably comprises one selected from the group consisting of acrylic resins, polyester resins and polypropylene resins as the base resin.

The acrylic resin that may be included in the surface layer is an ethylene-acrylic ester copolymer, the acrylic ester content is 7 to 35% by weight, the melt flow index (Melt Index) is preferably 0.3 to 50g / 10 minutes. If the acrylic ester content is less than 7% by weight, the mechanical properties of the surface is lowered, and when the acrylic ester content is more than 35% by weight, the resin processability is deteriorated. In addition, when the melt flow index is less than 0.3 g / 10 min, the resin flowability is lowered, and when the melt flow index is more than 50 g / 10 min, mechanical properties deteriorate. In addition, the acrylic ester is preferably methyl acrylate or butyl acrylate.

The polyester resin may be included in the surface layer is preferably a melt flow index of 0.3 ~ 20g / 10 minutes. If the melt flow index is less than 0.3 g / 10 min, the resin flowability is lowered, and if it exceeds 20 g / 10 min, the mechanical properties deteriorate.

As the polypropylene resin that may be included in the surface layer, a polypropylene homopolymer or copolymer resin having a melt flow index of 0.3 to 10 g / 10 minutes may be used, and when the melt flow index is less than 0.3 g / 10 minutes, When resin flow property falls and exceeds 10 g / 10min, mechanical property will worsen. In addition, when a polypropylene copolymer resin is used, the comonomer content is preferably 0.1 to 70% by weight in view of resin processability and mechanical properties. The polypropylene copolymer resin includes both a random copolymer and a block copolymer.

In the wallpaper according to the present invention, the adhesive layer may further include an adhesive layer between the surface layer and the print layer. As the adhesive layer, one of low density polyethylene and ethylene vinyl acetate copolymer (EVA) may be selected and used.

The low density polyethylene, which may be included in the adhesive layer, has a density of 0.915 to 0.925 g / cm 3 and a melt flow index of 1 to 20 g / 10 minutes, and the ethylene vinyl acetate copolymer has a vinyl acetate content of 10 to 50% by weight. The melt flow index is preferably 0.3 to 30 g / 10 minutes in view of resin processability and mechanical properties.

In the wallpaper according to the present invention, a photoluminescent agent may be added to the photoluminescent function. The photoluminescent agent is preferably included in the printed layer when the wallpaper has a two-layer structure of a print layer / support layer, and the surface layer / glue layer / In the case of the four-layer structure of a print layer / support layer, it is preferably included in the surface layer.

As the photoluminescent agent used in the present invention, it is preferable to use alkaline earth aluminate or alkaline earth silicate containing Al ₂ O ₃ , SrO ₃ , and B ₂ O ₃ as main components. It is preferable that the average particle diameter of the photoluminescent agent is 10 to 200 μm, but when it is out of the above range, the dispersibility is poor and thus does not show a role as the photoluminescent agent. The amount of the photoluminescent agent is preferably 1 to 20 parts by weight based on 100 parts by weight of the base resin of the printing layer or the surface layer. If the amount of the photoluminescent agent is less than 1 part by weight, the photoluminescent function is insufficient. There is a risk of undesirable effects.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. However, the scope of the present invention is not limited by these examples and comparative examples.

Production Example  1-7

Wallpaper consisting of a surface layer, an adhesive layer, a print layer and a support layer consisting of the components as shown in Table 1 was prepared for each production example, the print layer and the support layer was heat-bonded during the manufacture of the wallpaper. For each wallpaper produced, formaldehyde emission was measured according to KS F3111.

As a result of the measurement, the formaldehyde emission amount of the wallpaper of Preparation Examples 1 to 7 was all 0 mg / m 2 h, which corresponds to 5 claws (less than 0.03 mg / m 2 h) of the Ministry of Environment's environmentally friendly construction materials quality certification.

Production Example Surface layer Adhesive layer Printed layer Support layer One ACRYL EVA EVA PP nonwoven fabric 2 ESTER EVA EVA PET nonwoven fabric 3 PP EVA PP-R PET nonwoven fabric 4 PP LDPE PP-R EVA nonwoven fabric 5 ACRYL LDPE PP-LDPE EVA foam 6 PP LDPE PP LDPE foam 7 ACRYL EVA EVA paper

week)

ACRYL: Thermosetting Acrylic Resin

ESTER: Polyester Resin

PP: Polypropylene Copolymer Resin

     (Ethylene Content 10% by weight, Melt Flow Index 5g / 10min)

EVA: Ethylene-vinylacetate copolymer resin

      (20% by weight of vinyl acetate, melt flow index 5g / 10min)

LDPE: Low Density Polyethylene Resin

      (Density 0.915g / cm3, melt flow index 10g / 10min)

R: Hydrogenated Styrene-Butadiene Rubber (HSBR)

    (10 wt% styrene content, specific gravity 0.95)

PP-R: mixture of PP and R (mixed weight ratio PP / R = 80/20)

PP nonwoven fabric: Nonwoven fabric made of polypropylene copolymer resin

       (Ethylene content 10 wt%, melt flow index 10g / 10min, nonwoven fabric weight 80g / ㎡)

PET nonwoven fabric: Nonwoven fabric made of polyester resin

            (Melt flow index 10g / 10min, nonwoven fabric weight 80g / ㎡)

EVA foam: Foam of ethylene-vinylacetate copolymer resin

            (20% by weight of vinyl acetate, melt flow index 5g / 10min)

LDPE foam: foam of low density polyethylene resin

            (Density 0.915g / cm3, melt flow index 5g / 10min)

Paper: Wallpaper Paper

Examples 1-6

As a material for imparting photoluminescence to the surface layer, a photoluminescent agent having a photoluminescent function was added. As the photoluminescent agent, alkaline earth aluminate or alkaline earth silicate having an average particle diameter of 100 µm was used, except that 100 parts by weight of the surface layer contained the contents shown in Table 2, respectively, in Preparation Example 1 and The wallpaper according to Examples 1 to 6 was produced in the same manner, and the photoluminescence was measured by the following method, respectively, and the results are shown in Table 2.

Photoluminescent  How to measure

Photoluminescence is measured by Luminescence, and Luminance is the amount of psychophysics that indicates how much light is coming from the surface of an object toward the observer, which is expressed in terms of the intensity per apparent unit area, in units of nits (symbols nt, cd / M 2). For example, when a luminous flux of 1 m is coming from the area of 1 m 2 toward the observer within one solid angle, the luminance value of the surface is 1 nt. That is, it is used to indicate the degree of the object to be seen bright, the value may vary depending on the viewing angle, the higher the reflectance of the object under the same illumination light, that is, the better the luminous properties, the higher the luminance. This was measured according to KS A3509-1989.

Alkaline earth aluminate (parts by weight) Alkaline earth silicate (parts by weight) Luminance (mcd / ㎡) Comparative Example 1 0 0 5 Example 1 5 0 25 Example 2 10 0 40 Example 3 15 0 60 Example 4 0 5 25 Example 5 0 10 40 Example 6 0 15 60

As can be seen from the results in Table 2, the wallpaper of Preparation Example 1, which contains no alkaline earth aluminate or alkaline earth silicate as a substance for improving photoluminescence, and alkaline earth aluminate or alkaline earth silicate Comparing the photoluminescence properties of the wallpaper of Examples 1 to 6, including that, it can be seen that the photoluminescence property is improved in proportion to the content thereof.

      As can be seen above, the wallpaper according to the present invention does not contain a plasticizer and a chlorine element, and unlike the conventional PVC system, it does not generate hydrogen chloride gas and dioxins during combustion, and also harmful volatile organic compounds such as formaldehyde. It is suitable as a wallpaper for reducing birdhouse syndrome because it does not emit light. In addition, the wallpaper according to the present invention has the effect of meeting the safety at the time of power failure, power-off, power-off by providing photoluminescence.

Claims (12)

A laminated wallpaper comprising a print layer and a support layer, wherein the print layer comprises one of a polypropylene resin, a polypropylene resin-polyethylene resin mixture, a polypropylene resin-rubber mixture, and an ethylene vinyl acetate resin as a basic resin. The support layer comprises one of a polypropylene nonwoven fabric, a polyester nonwoven fabric, a low density polyethylene foam, an ethylene vinyl acetate foam, and paper, and an average of 1 to 20 parts by weight based on 100 parts by weight of the basic resin included in the printed layer. A wallpaper comprising a photoluminescent agent which is an alkaline earth aluminate or alkaline earth silicate having a particle diameter of 10 to 200 µm in a printing layer. A laminated structure comprising four layers of a surface layer, an adhesive layer, a printing layer, and a support layer, wherein the surface layer comprises one of an acrylic resin, a polyester resin, and a polypropylene resin as a basic resin, and the adhesive layer is made of low density polyethylene and ethylene. It comprises one of a vinyl acetate copolymer, the printing layer is made of a polypropylene resin, polypropylene resin-polyethylene resin mixture, polypropylene resin-rubber mixture and ethylene vinyl acetate resin as the base resin, The support layer includes one of a polypropylene nonwoven fabric, a polyester nonwoven fabric, a low density polyethylene foam, an ethylene vinyl acetate foam, and paper, and has an average particle diameter of 10 parts by weight to 20 parts by weight based on 100 parts by weight of the basic resin included in the surface layer. Alkaline earth with ~ 200㎛ Rumin acid salt or an alkaline earth silicate wallpaper comprising a phosphorescent agent to the surface layer. The polypropylene resin of claim 1 or 2, wherein the polypropylene resin included in the printing layer is a polypropylene homopolymer having a melt flow index of 0.3 to 10 g / 10 minutes, or a melt flow index of 0.3 to 10 g / 10 and a comonomer content. 0.1-70 weight% of polypropylene copolymer resin, The wallpaper characterized by the above-mentioned. The polyethylene resin of the polypropylene resin-polyethylene resin mixture contained in the said print layer has a density of 0.915-0.95 g / cm <3>, and melt flow index is 0.05-30 g / 10min. , The mixing ratio of the polypropylene resin / polyethylene resin is 95/5 ~ 50/50 by weight ratio wallpaper. The rubber according to claim 1 or 2, wherein the rubber in the polypropylene resin-rubber mixture included in the printing layer comprises hydrogenated styrene-butadiene rubber, styrene- (ethylene / butadiene) -styrene block copolymer and One of ethylene-propylene-diene terpolymers; Both of the hydrogenated styrene-butadiene rubber and styrene- (ethylene / butadiene) -styrene block copolymers have a styrene content of 5 to 30% by weight, a specific gravity of 0.85 to 0.97, a melt flow index of 1.0 to 20 g / 10 minutes, ; The mixing ratio of polypropylene resin / rubber is a wallpaper, characterized in that 95/5 ~ 70/30 by weight ratio. The wallpaper of claim 1 or 2, wherein the ethylene vinyl acetate resin included in the print layer has a vinyl acetate content of 10 to 50% by weight and a melt flow index of 0.3 to 30 g / 10 minutes. The wallpaper of claim 1 or 2, further comprising a blowing agent in the resin composition of the printing layer. The base resin 100 of claim 7, wherein the blowing agent is one or more selected from azo compounds, nitroso compounds, and sulfonylhydrazide compounds having a decomposition temperature of 130 to 190 ° C and included in the resin composition of the printing layer. Wallpaper comprising 0.1 to 10 parts by weight based on parts by weight. The polypropylene nonwoven fabric of claim 1 or 2, wherein the polypropylene nonwoven fabric included in the support layer has a polypropylene homopolymer having a melt flow index of 0.3 to 30 g / 10 minutes, or a melt flow index of 0.3 to 30 g / 10 minutes and a comonomer content of 0.1 to 3. A nonwoven fabric made of 70% by weight polypropylene copolymer resin, the polyester nonwoven fabric is a nonwoven fabric made of a polyester resin having a melt flow index of 0.1 to 60 g / 10 minutes, and the low density polyethylene foam has a density of 0.915 to 0.95 g / Cm 3, a low density polyethylene foam having a melt flow index of 0.05 to 30 g / 10 minutes, and the ethylene vinyl acetate foam has a vinyl acetate content of 10 to 50% by weight and a melt flow index of 0.3 to 30 g / 10 minutes. A wallpaper comprising a foam of vinyl acetate copolymer resin. The method of claim 2, wherein the acrylic resin contained in the surface layer is an ethylene-acrylic ester copolymer resin having an acrylic ester content of 7 to 35% by weight and a melt flow index of 0.3 to 50 g / 10 minutes, wherein the polyester resin is The melt flow index is 0.3 to 20 g / 10 minutes, the polypropylene resin is a polypropylene homopolymer having a melt flow index of 0.3 to 10 g / 10 minutes, or the melt flow index is 0.3 to 10 g / 10 minutes, and the comonomer content is 0.1 to 70 weight. It is polypropylene copolymer resin which is%, The wallpaper characterized by the above-mentioned. According to claim 2, wherein the low-density polyethylene contained in the adhesive layer has a density of 0.915 ~ 0.925g / cm 3, the melt flow index is 1 ~ 20g / 10 minutes, the ethylene vinyl acetate copolymer has a vinyl acetate content of 10 ~ 50 Weight%, the melt flow index wallpaper characterized in that 0.3 ~ 30g / 10 minutes. delete