KR100610212B1 - Wallpaper for reducing sick house syndrome - Google Patents

Abstract

The present invention relates to a wallpaper for reducing the sick house syndrome, and more particularly, by using a very small amount of volatile organic compounds harmful to the human body, as a result, the amount of volatile organic compounds, even if there is little or no release of volatile organic compounds resulting from this It relates to a wallpaper having an effect of reducing the syndrome.

Birdhouse syndrome, reduction, wallpaper

Description

WALLPAPER FOR REDUCING SICK HOUSE SYNDROME}

The present invention relates to a wallpaper for reducing the sick house syndrome, and more particularly, by using a very small amount of volatile organic compounds harmful to the human body, as a result, the amount of volatile organic compounds, even if there is little or no release of volatile organic compounds resulting from this It relates to a wallpaper having an effect of reducing the syndrome.

Birdhouse syndrome is when a new house is built in a new house by slowly releasing volatile organic compounds or endocrine-causing substances contained in or used for the installation of a residential building such as an apartment or a house, or used for installation thereof. It is a phenomenon that a person's health deteriorates, and it has become a big social problem in recent years.

Currently, as interior materials for homes such as decorative sheets or wallpaper, interior materials including polyvinyl chloride (PVC) resins are generally used. Due to its characteristics, polyvinyl chloride resins must be added with plasticizers at the time of processing. Most of these plasticizers are defined as endocrine-causing agents, and when the interior materials made of materials containing a large amount of these plasticizers are used for housing, It can have a very detrimental effect on the health of people living in homes.

In addition, since polyvinyl chloride resin contains chlorine in the polymer chain, dioxin, which is classified as a carcinogen and endocrine disruptor, is generated during combustion due to fire, etc., and hydrogen chloride gas generated during combustion is corrosive. This is a very strong, toxic and deadly harmful substance to the human body.

In addition, when the interior material such as decor sheet or wallpaper has a multi-layer structure, when using the adhesive using an organic solvent when bonding each layer or the interior material and other structures, the volatile organic compounds contained therein are gradually released. As a result, sick house syndrome becomes worse.

Therefore, due to the problem of polyvinyl chloride-based interior materials that can worsen the sick house syndrome and generate a very harmful substance to the human body during combustion, the development of new interior materials that can replace them is required. .

The present invention is to solve the conventional problems as described above, the object of the present invention is to reduce the release of harmful volatile organic compounds and endocrine disruptors by reducing the sickhouse syndrome by the effect of significantly reducing the combustion, It is to provide a wallpaper that significantly reduces the type and amount of harmful substances generated.

According to the present invention, as a laminated wallpaper comprising a printing layer and an adhesive layer, the printing layer is a polypropylene resin, a polypropylene resin-rubber mixture, a polypropylene resin-polyethylene resin mixture and a polypropylene resin-rubber-polyethylene resin It comprises a resin composition comprising at least one of the mixture, there is an adhesive layer between each of the constituent layers of the laminated structure, at least one of the adhesive layer comprises a polyolefin-based resin as an adhesive Wallpaper is provided.

It is preferable that the wallpaper of the present invention further includes a surface protective layer for imparting scratch resistance and stain resistance to the top surface of the laminated structure. It is preferable that the said surface protection layer contained in the wallpaper of this invention contains at least 1 resin chosen from the group which consists of an acrylic resin, a polyester resin, and a polypropylene resin.

The acrylic resin that may be included in the surface protective layer, the 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 protective 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 protection layer, a propylene 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 propylene-ethylene copolymer resin is used, it is preferable that the ethylene content is 0.1 to 70 weight% from a viewpoint of resin processability and mechanical properties. The propylene copolymer resin includes both a random copolymer and a block copolymer.

The resin composition of the printing layer included in the wallpaper of the present invention comprises at least one of polypropylene resin, polypropylene resin-rubber mixture, polypropylene resin-polyethylene resin mixture, and polypropylene resin-rubber-polyethylene resin mixture.

As the polypropylene resin included in the print layer, a propylene 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, a resin flow When property falls and 10 g / 10min is exceeded, mechanical property will worsen. When propylene-ethylene copolymer resin is used, it is preferable that the ethylene content is 0.1 to 70 weight% from the viewpoint of resin processability and mechanical properties. The propylene copolymer resin includes both a random copolymer and a block copolymer.

Examples of the rubber that may be included in the printed layer include hydrogenated styrene-butadiene rubber (HSBR), styrene- (ethylene / butadiene) -styrene block copolymer (Styrene- (ethylene / butadiene) -Styrene At least one of Block Copolymer (SEBS) and ethylene-propylene-diene terpolymer (EPDM) can be used. In the case of the hydrogenated styrene-butadiene rubber (HSBR) and styrene- (ethylene / butadiene) -styrene block copolymer (SEBS), both of them have a styrene content of 5 to 30% by weight, and their specific gravity is 0.85 to 0.97 g / cc, and the melt flow index is preferably 1.0 to 20 g / 10 minutes in view of resin processability and mechanical properties. In addition, in the printing layer, the mixing ratio of the rubber with the polypropylene resin is preferably from the viewpoint that the polypropylene resin / rubber has a weight ratio of 95/5 to 70/30 to obtain a desired level of mechanical properties.

As the polyethylene resin that may be included in the print layer, the density is 0.915-0.95 g / cm 3 and the melt index is 0.05-10 g / 10 min. From the viewpoint of resin processability and mechanical properties. . Further, in the printing layer or the intermediate layer, the mixing ratio of the polyethylene resin with the polypropylene resin is that the polypropylene resin / polyethylene resin is 95/5 ~ 50/50 by weight ratio to obtain the desired mechanical properties It is preferable in terms of.

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 and It is preferred that at least one is selected from the group consisting of diazoaminoazobenzene. It is preferable that 0.1-10 weight part of the said foaming agent is contained in the resin composition of the said printing layer with respect to 100 weight part of total resin 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 further comprises a support layer comprising at least one of a polypropylene nonwoven fabric, a low density polyethylene foam and an ethylene vinyl acetate foam 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 propylene homopolymer or copolymer resin having a melt flow index of 0.3 to 10 g / 10 minutes, 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. When propylene-ethylene copolymer resin is used, it is preferable that the ethylene content is 0.1 to 70 weight% from the viewpoint of resin processability and mechanical properties.

In addition, 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 0.925 g / cm 3 and a melt flow index of 0.3 to 30 g / 10 minutes in view of resin processability and mechanical properties. , The ethylene vinyl acetate foam that can be included in the support layer is a vinyl acetate content of 10 to 50% by weight, the melt flow index of 0.3 ~ 30g / 10 minutes is a foam of the ethylene-vinylacetate (EVA) copolymer resin of resin flowability And in terms of mechanical properties.

It is preferable that the wallpaper which concerns on this invention further contains a paper layer in the lowest layer of the said laminated structure.

At least one of the adhesive layers existing between the layers constituting the laminated structure of the wallpaper according to the present invention comprises a polyolefin resin as an adhesive. Particularly, when the surface protective layer is present on the uppermost layer of the laminated structure, the adhesive layer existing between the surface protective layer and the lower layer preferably comprises a water-soluble polyethylimine or polyolefin resin as an adhesive, and the surface protective layer. It is preferable that the contact bonding layers other than the contact bonding layer between the lower layer and the lower layer include polyolefin resin as an adhesive. The polyolefin-based resin used as the adhesive has a density of 0.915 to 0.925 g / cm 3 and a low density polyethylene resin or vinyl acetate content having a melt flow index of 0.3 to 30 g / 10 minutes, preferably 1 to 20 g / 10 minutes. Ethylene-vinylacetate copolymer resin having a melt flow index of 0.3 to 30 g / 10 minutes is preferred in terms of processability and adhesiveness.

In the wallpaper of the laminated structure according to the present invention, the laminated structure is a surface protective layer / adhesive layer / printing layer / adhesive layer / support layer / adhesive layer / paper, printing layer / adhesive layer / support layer / adhesive layer / paper and printing layer / in order from above It is preferable that it is a laminated structure which consists of at least one of an adhesive layer / paper.

According to one embodiment, the wallpaper of the laminated structure according to the present invention may be manufactured by laminating the adhesive layer between the respective constituent layers described above.

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.

Examples 1-6

As shown in Table 1, the wallpaper was prepared for each example by laminating the surface protective layer, the print layer, the support layer, the paper and the adhesive layer between the layers, and formaldehyde emission was measured according to KS F3111 for each manufactured wallpaper. It was.

As a result of the measurement, the formaldehyde emission amount of the wallpaper of Examples 1 to 6 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 eco-friendly construction materials quality certification.

TABLE 1

Example Surface protective layer Adhesive layer Printed layer Adhesive layer Support layer Adhesive layer paper One ACRYL EVA PP EVA PP nonwoven EVA paper 2 ESTER EVA PP EVA PP nonwoven EVA paper 3 PP LDPE PP-R LDPE EVA foam LDPE paper 4 ACRYL EVA PP-PE EVA EVA foam EVA paper 5 ACRYL EVA PP EVA LDPE foam EVA paper 6 PP LDPE PP-R-PE LDPE PP nonwoven LDPE paper

Note) ACRYL: thermosetting ethylene-acrylic ester copolymer resin

(Acrylic ester content 20 wt%, Melt flow index 10g / 10min)

ESTER: Polyester resin (melt flow index 10g / 10min)

PP: propylene-ethylene 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)

PE: polyethylene resin

(Density 0.920g / cm3, melt flow index 5g / 10min)

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

PP-PE: mixture of the above PP and PE (mixed weight ratio PP / PE = 80/20)

PP-R-PE: Mixture of the above PP, R and PE (mixed weight ratio PP / R / PE = 80/10/10)

PP nonwoven fabric: nonwoven fabric made of propylene-ethylene copolymer resin

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

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 10g / 10min)

Paper: Wallpaper Paper

As can be seen above, the wallpaper according to the present invention is suitable as a wallpaper for reducing the sick house syndrome by not releasing harmful volatile organic compounds such as formaldehyde and endocrine disruptors. In addition, since the wallpaper according to the present invention does not contain a plasticizer and a chlorine element, unlike the conventional PVC system, hydrogen chloride gas and dioxins are not generated during combustion.

Claims (14)

A laminated wallpaper comprising a surface protective layer, a print layer, and an adhesive layer, The surface protective layer is laminated on the uppermost layer of the laminated structure, the ethylene-acrylic ester copolymer resin having an acrylic ester content of 7 to 35% by weight, a melt flow index of 0.3 to 50g / 10 minutes, a melt flow index of 0.3 to 20g It comprises at least one resin selected from the group consisting of polyester resin of / 10 minutes and polypropylene resin of melt index of 0.3 ~ 10g / 10 minutes, The print layer comprises a resin composition comprising at least one of polypropylene resin, polypropylene resin-rubber mixture, polypropylene resin-polyethylene resin mixture, and polypropylene resin-rubber-polyethylene resin mixture, An adhesive layer is present between the respective constituent layers of the laminated structure, wherein at least one of the adhesive layers comprises a polyolefin-based resin as an adhesive. delete delete The polypropylene resin of claim 1, wherein the polypropylene resin is a propylene 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 minutes and an ethylene content of 0.1 to 70 wt%. It is a propylene ethylene copolymer resin, The wallpaper characterized by the above-mentioned. The rubber of claim 1, wherein the rubber included in the print layer is at least one of hydrogenated styrene-butadiene rubber, styrene- (ethylene / butadiene) -styrene block copolymer, and ethylene-propylene-diene terpolymer; Both 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 g / cc, and a melt flow index of 1.0 to 20 g. / 10 minutes; The said printing layer WHEREIN: The wallpaper in which the mixing ratio of the said rubber with the said polypropylene resin is 95/5-70/30 by weight ratio of polypropylene resin / rubber | gum. The method of claim 1, wherein the polyethylene resin included in the print layer has a density of 0.915-0.95 g / cm 3 and a melt flow index of 0.05-10 g / 10 min; The said printing layer WHEREIN: The wallpaper with which the polypropylene resin / polyethylene resin is 95/5-50/50 by weight ratio of the polyethylene resin with the polypropylene resin. The wallpaper of claim 1, wherein the resin composition of the print layer further comprises a blowing agent. According to claim 7, wherein the blowing agent is at least one selected from azo compounds, nitroso-based compounds and sulfonylhydrazide-based compound having a decomposition temperature of 130 ~ 190 ℃, the total weight of resin contained in the resin composition of the printing layer 0.1-10 weight part with respect to parts is contained in the resin composition of the said printing layer, The wallpaper characterized by the above-mentioned. The wallpaper according to claim 1, further comprising a support layer comprising at least one of a polypropylene nonwoven fabric, a low density polyethylene foam, and an ethylene vinyl acetate foam under the printed layer. 10. The method of claim 9, wherein the polypropylene nonwoven fabric is a propylene homopolymer having a melt flow index of 0.3 to 10 g / 10 minutes, or a propylene-ethylene copolymer having a melt flow index of 0.3 to 10 g / 10 minutes and an ethylene content of 0.1 to 70 wt%. The low density polyethylene foam is made of resin, and the low density polyethylene foam is a foam of low density polyethylene resin having a density of 0.915 to 0.925 g / cm 3 and a melt flow index of 0.3 to 30 g / 10 minutes, and the ethylene vinyl acetate foam has a vinyl acetate content of 10 A wallpaper characterized in that the foam is a foam of ethylene-vinylacetate copolymer resin having a melt flow index of 0.3 to 30 g / 10 minutes, at -50% by weight. The wallpaper of claim 1, further comprising a paper layer on a lowermost layer of the laminated structure. The wallpaper according to claim 1, wherein an adhesive layer comprising water-soluble polyethylimine or polyolefin resin as an adhesive is present between the surface protective layer and the lower layer. The low density polyethylene resin or vinyl acetate content according to claim 1 or 12, wherein the polyolefin-based resin included as an adhesive in the adhesive layer has a density of 0.915 to 0.925 g / cm 3 and a melt flow index of 0.3 to 30 g / 10 minutes. A wallpaper characterized in that the ethylene-vinylacetate copolymer resin having a melt flow index of 10 to 50% by weight and a melt flow index of 0.3 to 30 g / 10 minutes. The method of claim 1, wherein the laminated structure comprises at least one of a surface protective layer / adhesive layer / printing layer / adhesive layer / support layer / adhesive layer / paper, a print layer / adhesive layer / support layer / adhesive layer / paper and a print layer / adhesive layer / paper in order from above. Wallpaper characterized in that the laminated structure consisting of one.