KR100668450B1 - Decorative sheet for reducing sick house syndrome - Google Patents

Abstract

The present invention relates to a decor sheet 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 released even if there is little or no It relates to a decor sheet having the effect of reducing the sick house syndrome.

Birdhouse Syndrome, Decrease, Decor Sheet

Description

DECOORATIVE SHEET FOR REDUCING SICK HOUSE SYNDROME}

The present invention relates to a decorative sheet for reducing sick house syndrome, and more particularly, by using a very small amount of volatile organic compounds harmful to the human body, as a result, even if there is no emission amount of volatile organic compounds The present invention relates to a decor sheet having a very small effect, thereby reducing the sick house 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.

A decorative sheet is a sheet-like interior material that is attached to give decorative property to a surface of a building flooring material, and is a polyvinyl chloride (PVC) -based interior material such as a decorative sheet or a wall paper. Interior materials including resins are generally used. Due to its properties, 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 bad effect on the health of the people living in the house.

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 decor sheet to significantly reduce the type and amount of harmful substances generated.

According to the present invention, there is provided a laminated sheet comprising a surface protective layer, a printing layer and an adhesive layer, wherein the printing layer is a polypropylene resin, a polypropylene resin-rubber mixture, a polypropylene resin-polyethylene resin mixture, and a polypropylene resin. A resin composition comprising at least one of a rubber-polyethylene resin mixture, wherein an adhesive layer is present between the respective constituent layers of the laminated structure, and at least one of the adhesive layers includes a polyolefin-based resin as an adhesive. There is provided a decor sheet, characterized in that made.

The surface protective layer included in the decor sheet of the present invention is laminated on the top layer of the laminated structure in order to impart scratch resistance and stain resistance to the decor sheet surface, and is composed of an acrylic resin, a polyester resin, and a polypropylene resin. It is preferable to include at least one resin selected from the group.

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 that 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 polypropylene homopolymer or copolymer resin having a melt flow index of 0.3 to 10 g / 10 minutes may be used, and the melt flow index may be less than 0.3 g / 10 minutes. And resin flow property falls and when it exceeds 10g / 10min, mechanical property will worsen. Moreover, when polypropylene 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 polypropylene copolymer resin includes both a random copolymer and a block copolymer.

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

The decor sheet according to the present invention is at least one of a polypropylene resin, a polypropylene resin-rubber mixture, a polypropylene resin-polyethylene resin mixture, and a polypropylene resin-rubber-polyethylene resin mixture between the surface protective layer and the printing layer. It is preferable to further include the intermediate | middle layer which consists of one.

As the polypropylene resin included in the print layer or the intermediate layer, a polypropylene homopolymer or copolymer resin having a melt flow index of 0.3 to 10 g / 10 minutes may be used, and the melt flow index may be less than 0.3 g / 10 minutes. If it is, resin flowability will fall, and if it exceeds 10g / 10min, mechanical property will worsen. When polypropylene copolymer resin is used, its ethylene 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.

Examples of the rubber that may be included in the printed layer or the intermediate layer include hydrogenated styrene-butadiene rubber (HSBR), styrene- (ethylene / butadiene) -styrene block copolymer (Styrene- (ethylene / butadiene) ) -Styrene Block Copolymer (SEBS) and ethylene-propylene-diene terpolymer (EPDM) are 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, in the printing layer or the intermediate layer, the mixing ratio of the rubber with the polypropylene resin is from the viewpoint that the polypropylene resin / rubber is 95/5 ~ 70/30 by weight ratio to obtain the desired level of mechanical properties desirable.

The polyethylene resin that may be included in the print layer or the intermediate layer, the density is 0.915 ~ 0.95g / cm3, the melt index (Melt Index) is 0.05 ~ 10g / 10 minutes in terms of processability and mechanical properties desirable. 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.

At least one of the adhesive layers present between the layers constituting the laminated structure of the decor sheet 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 decorative sheet of the laminated structure according to the present invention, the laminated structure is preferably a laminated structure consisting of a surface protective layer / adhesive layer / intermediate layer / adhesive layer / printing layer / adhesive layer in order from above.

According to one embodiment, a decorative sheet of a laminate structure according to the present invention may be manufactured by laminating the adhesive layer between each of the 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 1-5

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

As a result, the formaldehyde emissions of the decor sheet of Examples 1 to 5 were 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 Mezzanine Adhesive layer Printed layer Adhesive layer One ACRYL PEI PP EVA PP EVA 2 ESTER EVA PP EVA PP EVA 3 ACRYL PEI PP-R EVA PP-R EVA 4 ACRYL PEI PP-PE EVA PP-R EVA 5 ACRYL PEI PP EVA PP-R-PE EVA

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)

PEI: Polyethylenimine

EVA: ethylene-vinylacetate copolymer resin

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

PP: polypropylene copolymer resin

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

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

Claims (10)

A decorative sheet having a laminated structure comprising a surface protective layer, an intermediate layer, a printing 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 intermediate layer is laminated between the surface protection layer and the printing layer and includes at least one of a polypropylene resin, a polypropylene resin-rubber mixture, a polypropylene resin-polyethylene resin mixture, and a polypropylene resin-rubber-polyethylene resin mixture Done by 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 sheet. delete delete delete The polypropylene resin of claim 1, wherein the polypropylene resin included in the printing layer or the intermediate layer comprises 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 minutes and an ethylene content of 0.1. Deco sheet, characterized in that the polypropylene copolymer resin is ~ 70% by weight. The rubber of claim 1, wherein the rubber included in the print layer or the intermediate layer is at least one of hydrogenated styrene-butadiene rubber, styrene- (ethylene / butadiene) -styrene block copolymer, and ethylene-propylene-diene terpolymer. ; 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, ; In the said intermediate | middle layer or the said printing layer, the mixing ratio of the said rubber with the said polypropylene resin is polypropylene resin / rubber, The decoration sheet characterized by the weight ratio of 95/5-70/30. The method according to claim 1, wherein the polyethylene resin contained in the print layer or the intermediate layer has a density of 0.915-0.95 g / cm 3 and a melt flow index of 0.05-10 g / 10 min; In the said intermediate | middle layer or the said printing layer, the mixing ratio of the said polyethylene resin with the said polypropylene resin is a polypropylene resin / polyethylene resin, The decoration sheet which is 95/5-50/50 by weight ratio. The decorative sheet according to claim 1, wherein an adhesive layer comprising water-soluble polyethylimine or polyolefin-based resin as an adhesive is present between the surface protective layer and the lower layer. The polyolefin resin of claim 1 or 8, wherein the polyolefin resin included as an adhesive in the adhesive layer 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. Deco sheet, characterized in that the ethylene-vinylacetate copolymer resin of 10 to 50% by weight, melt flow index of 0.3 to 30g / 10 minutes. The decoration sheet according to claim 1, wherein the laminated structure is a laminated structure consisting of a surface protective layer / adhesive layer / intermediate layer / adhesive layer / printing layer / adhesive layer in order from above.