KR102331112B1 - Low gloss non-foaming decorative sheet having excellent texture - Google Patents

Abstract

The present invention relates to a low-gloss decorative sheet with excellent tactile feel, and the laminated film according to the present invention induces a radially curved structure having a dendrite shape of a certain size in a cured layer, which is the outermost layer, at a certain frequency, so that an excessive amount of matting agent is not used. Not only can the surface glossiness be remarkably lowered without the need for it, but it also improves the stain resistance by reducing the surface contact area of contaminants, and the user's satisfaction is excellent due to the excellent tactile feel. It can be useful.

Description

Low gloss non-foaming decorative sheet having excellent texture

The present invention relates to a low-gloss decorative sheet with excellent tactile feel, and more particularly, by inducing a radially curved structure having a constant surface roughness on the surface to have excellent tactile and stain resistance and low gloss without excessive matting agent, and manufacturing thereof it's about how

As decorative sheets used as exterior materials for furniture and home appliances are differentiated and advanced according to consumers' preferences, the demand for decorative sheets that satisfy various physical properties is increasing. For example, it is easy to remove contaminants on the surface even if they do not adhere well to the surface, and in order to give aesthetic luxury, physical properties showing a silky touch are required.

However, when the surface of the conventional decorative sheet is contaminated with contaminants, since the user cannot easily erase the traces of the contaminants, the decorative sheet with contaminant traces has a problem in that the basic function thereof cannot be fulfilled. In order to overcome this problem, a technology for imparting stain resistance by forming a surface treatment layer on the uppermost layer of the decor sheet has been developed.

However, in this case, the lower the luster, the lower the stain resistance, and the function such as cleaning is significantly reduced. Specifically, when the deco sheet with the existing stain resistance is contaminated by oily magic and other contaminants, the gloss is erased above 10 based on a 60 degree gloss-meter, but when it is less than 10, the function is disabled. There is a problem in that the stain resistance is rapidly reduced due to the abrasion of the silicone contained in the UV curing surface treatment agent that treats the surface of the decorative sheet. In addition, the conventional UV curing surface treatment agent contains the content of silica as a matting agent in an amount of 10% by weight or more based on the total weight in order to lower the gloss of the treated decor sheet, but since the silica is porous and has a very low apparent specific gravity, the content As the amount increases, it becomes easier to adsorb fine dust, moisture, oil, etc., and the contamination resistance sharply decreases, and marks such as hand and foot sweat marks remain on the surface of the surface-treated deco sheet, giving the appearance a misty appearance. A hazy phenomenon occurs.

Therefore, while excluding or using a small amount of a matting agent containing inorganic particles, the low gloss of the decor sheet is realized, and at the same time, the surface roughness is controlled to improve the stain resistance so that contaminants are not easily attached to the surface of the decor sheet while improving the tactile feel. There is an urgent need to develop a decorative sheet that is excellent and has high user satisfaction.

Republic of Korea Patent Publication No. 2009-0072273

An object of the present invention is to realize the gloss of the decor sheet without using an excessive matting agent, improve the stain resistance so that contaminants are not easily attached to the surface of the decor sheet, and the decor sheet with excellent tactile feel and high user satisfaction is to provide

Accordingly, the present invention in one embodiment,

base layer; and

The surface includes a cured layer of an acrylic resin composition having a dendrite shape with one point as a center and a radially curved structure extending from the center to the periphery;

30 to 200 of the radial curved structures are present per unit area (1 mm X 1 mm) of the surface; and

The coefficient of kinetic friction provides a laminated film of 0.3 or less under the normal force of 4.5 kgf.

In addition, the present invention in one embodiment,

A first light irradiation step of irradiating the acrylic resin composition coated on the base layer with light having a wavelength of less than 300 nm under an inert gas condition to activate the composition; and

A second light irradiation step of curing the composition by irradiating the activated composition with light having a wavelength of 200 nm to 400 nm under air conditions,

The first light irradiation step provides a method of manufacturing a laminated film performed under _{nitrogen (N 2 ) conditions in which the concentration of oxygen (O 2} ) is 100 ppm to 4,000 ppm.

Furthermore, in one embodiment of the present invention, it provides a decorative sheet comprising the laminated film.

The laminated film according to the present invention induces a radial curved structure having a dendrite shape of a certain size in the cured layer, which is the outermost layer, at a certain frequency, so that the surface gloss can be significantly lowered without using an excessive matting agent, as well as contaminants By reducing the surface contact area of the surface, the stain resistance is improved, and the user's satisfaction is excellent due to the excellent touch, so the decorative sheet including the same can be usefully used in various fields such as furniture and home appliances.

1 is a structural diagram illustrating an example of a photocuring device used for manufacturing a cured layer according to the present invention.
2 is a scanning electron microscope (SEM) image of the dendrite formed on the surface of the cured layer according to the present invention.
3 is a scanning electron microscope (SEM) image of the surface of the cured layer of Examples 1 to 3 according to the present invention.
4 is a scanning electron microscope (SEM) image of the surface of the cured layer of Comparative Examples 1 to 5 according to the present invention.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description.

However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

In the present invention, terms such as "comprises" or "have" are intended to designate that the features, numbers, steps, operations, components, parts, or combinations thereof described in the specification exist, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

In addition, it should be understood that the accompanying drawings in the present invention are enlarged or reduced for convenience of description.

Hereinafter, the present invention will be described in detail with reference to the drawings, and the same or corresponding components are assigned the same reference numerals regardless of reference numerals, and overlapping descriptions thereof will be omitted.

In the present invention, "surface profile" indicates the degree of fine irregularities present on the surface, and may be expressed as "Rz". Here, "Rz" is a straight line that takes the reference length L as the cross-sectional curve of the surface and does not cut the cross-sectional curve transversely parallel to the average line of the part. As the deviation is expressed by measuring the gap between valleys, it is also called "ten point average roughness".

The present invention relates to a low-gloss decorative sheet with excellent tactile feel.

The conventional decorative sheet has a problem in that when the surface is contaminated with contaminants, the user cannot easily erase the traces of the contaminants, so that the deco sheets with contaminant traces cannot fulfill their basic functions. In order to overcome this problem, a technology for imparting stain resistance by forming a surface treatment layer on the uppermost layer of the decor sheet has been developed.

However, in this case, the lower the luster, the lower the stain resistance, and the function such as cleaning is significantly reduced. Specifically, if the deco sheet with the existing stain resistance is contaminated by oily magic and other contaminants, the gloss will be erased above 10 based on a 60° Gloss-Meter, but if it is less than 10, the function will be disabled. There is a problem in that the stain resistance is rapidly reduced due to the abrasion of the silicone contained in the UV curing surface treatment agent that treats the surface of the decorative sheet. In addition, the conventional UV curing surface treatment agent contains the content of silica as a matting agent in an amount of 10% by weight or more based on the total weight in order to lower the gloss of the treated decor sheet, but since the silica is porous and has a very low apparent specific gravity, the content As the amount increases, it becomes easier to adsorb fine dust, moisture, oil, etc., and the contamination resistance sharply decreases, and marks such as hand and foot sweat marks remain on the surface of the surface-treated deco sheet, giving the appearance a misty appearance. As such, there is a limit to the occurrence of a clouding phenomenon.

Accordingly, the present invention provides a low-gloss decorative sheet excellent in touch and a manufacturing method thereof.

The laminated film according to the present invention induces a radial curved structure having a dendrite shape of a certain size in the cured layer, which is the outermost layer, at a certain frequency, so that the surface gloss can be significantly lowered without using an excessive matting agent, as well as contaminants By reducing the surface contact area of the surface, the stain resistance is improved, and the user's satisfaction is excellent due to the excellent touch, so the decorative sheet including the same can be usefully used in various fields such as furniture and home appliances.

Hereinafter, the present invention will be described in more detail.

laminated film

The present invention in one embodiment,

base layer; and

Provided is a laminated film including a cured layer having a dendrite shape, which is a radially curved structure extending from the center to the periphery with one point as the center and on the surface thereof.

The laminated film according to the present invention includes a cured layer of a composition including an acrylic oligomer on a base layer as the outermost layer of the structure, and the cured layer has a curved structure having a specific shape on the surface. Specifically, the laminated film includes a hardened layer having a fine curved structure on its surface as the outermost layer, and the curved structure has an arbitrary point existing on the surface of the cured layer as the center, and extends from the center to the periphery, but extends from the center to the periphery. It has a structure in which radial irregularities whose height is lowered toward the periphery are randomly dispersed. For example, the radial curved structure may include an arborescence structure or a structure in which a dendrite structure is randomly dispersed having an arbitrary point on the surface of the hardened layer as a center.

In addition, the surface properties, specifically, surface gloss, stain resistance, friction coefficient, etc. of the radial curved structure can be adjusted by the size or height thereof, and for this purpose, the radial curved structure is controlled to have an average diameter within a specific range. can be Specifically, the average diameter of the radial curved structures represents the average size of individual radial curved structures present on the surface of the hardened layer, and the average diameter may be 5 μm to 200 μm, more specifically 5 μm to 180 μm, 5 μm to 150 μm, 5 μm to 100 μm, 5 μm to 50 μm, 50 μm to 200 μm, 50 μm to 100 μm, 100 μm to 200 μm, 80 μm to 150 μm, 20 μm to 100 μm, 25 μm to 60 μm, 40 μm to 80 μm, 80 μm to 120 μm, 90 μm to 110 μm, 5 μm to 40 μm, 5 μm to 30 μm, 5 μm to 25 μm, 5 μm to 20 μm, 5 μm to 15 μm, 5 μm to 10 μm, 10 μm to 30 μm, 15 μm to 30 μm, 15 μm to 25 μm, 20 μm to 30 μm, 1 μm to 10 μm, 2 μm to 10 μm, 4 μm to 10 μm, 5 μm to 10 μm, 7.5 μm to 10 μm, 8 μm to 10 μm¸0.5 μm to 7.5 μm, 0.5 μm to 5 μm, 0.5 μm to 3 μm, 0.5 μm to 2 μm, 0.5 μm to 1 μm, 1 μm to 5 μm ¸ 1 μm to 3 μm, 1 μm to 2 μm, 2 μm to 5 μm, 2 μm to 3.5 μm, 4 μm to 8 μm, 4 μm to 6 μm, 5 μm to 8 μm, 5 μm to 6.5 μm, 6 μm to 9 μm, 6 μm to 8 μm, 7 μm to 9 μm, or 3 μm to 5 μm.

In addition, the cured layer may have a uniform surface roughness by forming a radial curved structure on the surface. Specifically, the average value of the surface roughness “Rz” of the radial curved structure existing on the surface of the cured layer may be 10 μm or less, and more specifically, the upper limit of the upper limit is 9.0 μm or less, 8.5 μm or less, 8.0 μm or less, 7.5 μm or less. , 7.0 µm or less, 6.5 µm or less, 6.0 µm or less, and the lower limit may be 0.1 µm or more, 1.0 µm or more, 2.0 µm or more, 2.5 µm or more, 3.0 µm or more, 3.5 µm or more, 4.0 µm or more, or 4.5 µm or more have. For example, the surface roughness (Rz) of the radial curved structure is 0.1 μm to 10 μm, 1 μm to 8 μm, 2 μm to 6 μm, 4 μm to 6 μm, 4.5 μm to 6.5 μm, 5 μm to 10 μm , 6 μm to 9 μm, 3 μm to 7 μm, 2 μm to 5 μm, 5.5 μm to 6.5 μm, 4.8 μm to 5.4 μm, 7 μm to 9 μm, or 4.7 μm to 5.9 μm.

In addition, the radially curved structures may be formed at a constant frequency, for example, a constant number in a unit area, and the number of the radially curved structures may be the same as the number of central portions of the radially curved structures existing in a unit area. In addition, 30 to 200 pieces of the radial curved structure may exist per unit area (1 mm X 1 mm) of the surface of the hardened layer, and specifically, 30 to 200 pieces and 35 to 200 pieces per unit area (1 mm X 1 mm) of the surface of the hardened layer. Dogs, 40-200, 50-200, 60-200, 80-200, 100-200, 150-200, 180-200, 80-120, 140-180, 30-40 Dogs, 105-150, 100-120, 150-160, 70-180, 30-180, 30-150, 30-120, 30-100, 30-80, 30-70 Dogs, 30-60, 30-50, 40-100, 40-80, 40-70, 40-60, 40-50, 40-57, 50-65, 45-55 Dogs, 48-71, 45-85, 50-80, 55-75, 60-80, 45-55, 48-54, 57-62, 50-70 or 55-65 dogs may exist.

For example, the hardened layer may have 40 to 65 dendrites having an average diameter of 5 to 7 μm and a surface roughness (Rz) of 2 to 4.5 μm per unit area (1 mm X 1 mm).

The laminated film according to the present invention includes a radially curved structure having the above shape and frequency on the surface of the hardened layer, which is the outermost layer, so that the surface glossiness, stain resistance, friction coefficient, scratch resistance, elongation, etc. can be more easily controlled. can

As an example, the laminated film according to the present invention is 10 parts by weight based on 100 parts by weight of the entire cured layer (eg, the total weight of the acrylic resin composition) by inducing scattering of light incident on the surface through the radial curved structure formed on the surface of the cured layer. less than 9 parts by weight, more specifically up to 9 parts by weight, up to 8 parts by weight, 7 parts by weight or less, 6 parts by weight or less, 5 parts by weight or less, 4 parts by weight or less, or less than 4 parts by weight of matting agent, or if Therefore, it is possible to implement a remarkably low gloss without including a matting agent. Specifically, the laminate film may have a surface glossiness of 6 or less when measuring 60° glossiness (gloss 60° condition) using a gloss meter, and specifically, an upper limit of 5.5 or less, 5 or less, 4.5 or less , 5 or less, 3.5 or less, 3 or less, 2.5 or less, 2 or less, or 1.5 or less, and the lower limit may be 0.1 or more, 0.5 or more, 1 or more, 1.5 or more, 2 or more, 2.5 or more, or 3 or more. As an example, the surface glossiness of the laminated film is 0.5 to 6, 0.5 to 5.5, 2 to 5, 3 to 5, 4 to 5, 1 to 4, 1 to 3, 1 to 2, 2 to 4, 1.5 to 3.5, 1.8 to 2.2, 2.8 to 4.3, 1.2 to 1.9, 3.2 to 4.7 or 0.5 to 1.2.

As another example, the laminated film according to the present invention may have a low coefficient of kinetic friction and thus may have excellent tactile feel on the surface. For example, the multilayer film may have a coefficient of kinetic friction of 0.3 or less under conditions of 25° C., 50% relative humidity, and 4.5 kgf normal force, and more specifically, a kinetic coefficient of friction of 0.25 or less, 0.2 or less, 0.15 or less under the above conditions. or less, 0.1 or less, 0.09 or less, 0.08 or less, 0.07 or less, 0.06 or less, 0.05 or less, 0.001 to 0.3, 0.001 to 0.25, 0.001 to 0.2, 0.001 to 0.15, 0.001 to 0.1, 0.001 to 0.8, 0.001 to 0.6, 0.001 to 0.5, 0.001 to 0.4, 0.005 to 0.1, 0.005 to 0.08, 0.005 to 0.6, 0.005 to 0.05, 0.005 to 0.045, 0.008 to 0.02, 0.008 to 0.025, 0.008 to 0.03, 0.008 to 0.04, 0.008 to 0.045, 0.01 to 0.03 to 0.02 to 0.04, 0.1 to 0.2, 0.2 to 0.3, 0.15 to 0.35, 0.08 to 0.15, 0.12 to 0.25, 0.18 to 0.22, 0.18 to 0.31, 0.23 to 0.29, 0.26 to 3.2, 0.24 to 0.30, 0.27 to 0.29, 0.26 to 0.28 or 0.275 to 0.290.

As another example, the multilayer film according to the present invention has improved contamination resistance of the surface, so that when evaluating contamination resistance according to DIN 68861:2011, part 1, the contamination degree for 4 or more contaminants selected arbitrarily may be at least 4 grades. . Specifically, in the present invention, the cured product according to the present invention is exposed to four or more contaminants arbitrarily selected from name pens, oily magic pens, inks, mustards, etc. ) to 5 (no change). As a result, it was confirmed that the degree of contamination of the cured product was in the range of 4 grades (minimum change in luster or color) to 5 grades, specifically, 5 grades. From this, it can be seen that the cured product according to the present invention has excellent stain resistance.

In addition, the hardened layer has improved contamination resistance against organic materials such as oil-based magic, so when washing the surface after 1 minute has elapsed after applying oil-based magic, the residual contamination area on the surface of the washed hardened layer is 5 based on the initial contamination area %, more specifically less than 4%, less than 3%, or less than 2%, and in some cases, the residual area contaminated with oily magic may be close to 0%.

As another example, the laminate film may have an average hardness of 0.5 to 1.0N when measuring hardness according to ISO 4586-2, specifically, an average hardness of 0.5 to 0.9N, 0.5 to 0.8N, 0.5 to 0.75N, 0.5 to 0.7N, 0.6 to 1.0N, 0.7 to 1.0N, 0.8 to 1.0N, 0.65 to 0.9N, 0.7 to 0.85N, 0.6 to 0.8N, 0.65 to 0.75N, 0.5 to 0.75N, 0.66 to 0.73N.

In addition, the laminated film may exhibit excellent elongation characteristics. Specifically, the elongation of the laminated film may vary depending on the temperature conditions provided in the laminated film and the type of the substrate layer, and the laminated film has an improved elongation and is 1± when including a polyvinyl chloride (PVC) substrate as the substrate layer. After heating to 80° C. for 0.2 minutes, when stretching to 200% elongation, damage to the surface of the laminated film may not occur.

On the other hand, the base layer provided in the laminated film according to the present invention is a layer serving as a base of the laminated film, and is selected from the group consisting of polyvinyl chloride (PVC), polyethylene terephthalate (PET) and glycol-modified polyethylene terephthalate (PETG). It may include a sheet consisting of one or more of the

In addition, the average thickness of the cured layer according to the present invention may be adjusted to an appropriate range that does not affect durability. For example, the cured layer may have an average thickness of 5 μm to 50 μm so as not to be torn or lost by external stimuli, and more specifically, 5 μm to 30 μm, 5 μm to 15 μm, 10 μm to 20 μm. , 10 μm to 30 μm, 25 μm to 50 μm, 30 μm to 50 μm, 20 μm to 40 μm, or 15 μm to 20 μm. The average thickness of the cured layer mentioned in the present invention may mean the average thickness (T _aver ) of the cured layer excluding the height of the dendrite as shown in FIG. 2 , and in some cases, the height of the dendrite is excluded. It may mean a thickness including a value of 1/2 of the average thickness (T _aver ) of the layer and the average maximum height (R _{max ) of the dendrites.}

Manufacturing method of laminated film

In addition, the present invention in one embodiment,

A first light irradiation step of irradiating the acrylic resin composition coated on the base layer with light having a wavelength of less than 300 nm under an inert gas condition to activate the composition; and

A second light irradiation step of curing the composition by irradiating the activated composition with light having a wavelength of 200 nm to 400 nm under air conditions,

The first light irradiation step provides a method of manufacturing a laminated film performed under _{nitrogen (N 2 ) conditions in which the concentration of oxygen (O 2} ) is 100 ppm to 4,000 ppm.

The manufacturing method of the laminated film according to the present invention may be performed by curing the acrylic resin composition in stages under different conditions.

Specifically, the first light irradiation step is a first step of irradiating light to the acrylic resin composition applied on the base layer, and the excimer generated by the irradiated light is applied to the surface of the composition and/or the cured layer. It is a step of increasing the scattering rate of light incident on the surface by forming wrinkles by shrinking it. The present invention can increase the scattering rate of light by using an excimer to shrink the surface of the acrylic resin composition and/or the cured layer into the above-described radial curved structure, so that the gloss of the cured layer can be reduced without using a matting agent. . _{To this end, the first light irradiation step is a nitrogen (N 2} ) containing a small amount of _{oxygen (O 2} ) by using a wavelength of less than 300 nm, specifically 100 to 200 nm or 150 to 195 nm having high energy. It can be carried out in an atmosphere. Specifically, the concentration of oxygen (O _{2 ) contained in nitrogen (N 2} ) in the first light irradiation step may be 100 to 4,000 ppm, specifically 100 to 3,500 ppm, 100 to 3,000 ppm, 100 to 2,500 ppm , 100 to 1,300 ppm, 100 to 1,000 ppm, 1,000 to 2,000 ppm, 1,000 to 1,500 ppm, 1,500 to 2,000 ppm, 2,000 to 3,000 ppm, 2,000 to 2,500 ppm, 2,500 to 3,000 ppm, 3,000 to 3,500 ppm, 3,500 to 4,000 ppm , 2,000 to 4,000 ppm, 1,500 to 3,000 ppm, 100 to 200 ppm, 150 to 250 ppm, 200 to 300 ppm, 300 to 400 ppm, 400 to 500 ppm, 500 to 600 ppm, 600 to 700 ppm, 700 to 800 ppm, 800 to 900 ppm, 900 to 1,000 ppm, 100-2,000 ppm, 100-500 ppm, 100-300 ppm, 700-2,500 ppm, 500-1,800 ppm, 1,100-1,600 ppm, 1,400-1,900 ppm, 1,200-1,700 ppm, 1,700-2,800 ppm, 1900-2,600 ppm, 2,200 to 3,100 ppm, 2,300 to 2,800 ppm, 2,400 to 3,500 ppm, or 2,400 to 2,600 ppm.

In addition, in the first light irradiation step, the distance between the composition and the light source may be 5 to 100 mm, specifically 5 to 80 mm, 5 to 60 mm, 5 to 40 mm, 10 to 70 mm, 10 to 50 mm, 10 30 mm, 20-80 mm, 20-60 mm, 20-50 mm, 20-30 mm, 25-75 mm, 50-80 mm, 40-60 mm or 45-55 mm.

In addition, the light irradiation amount in the first light irradiation step may be 1 mJ/cm 2 to 100 mJ/cm 2 , specifically, 1 mJ/cm 2 to 80 mJ/cm 2 , 1 mJ/cm 2 to 60 mJ/cm 2 1 mJ /cm2 to 40 mJ/cm2, 1 mJ/cm2 to 35 mJ/cm2, 1 mJ/cm2 to 30 mJ/cm2¸1 mJ/cm2 to 20 mJ/cm2, 1 mJ/cm2 to 10 mJ/cm2, 5 mJ /cm2 to 10 mJ/cm2, 5 mJ/cm2 to 15 mJ/cm2, 5 mJ/cm2 to 20 mJ/cm2, 5 mJ/cm2 to 25 mJ/cm2, 5 mJ/cm2 to 35 mJ/cm2, 5 mJ /cm2 to 50 mJ/cm2, 15 mJ/cm2 to 25 mJ/cm2, 25 mJ/cm2 to 35 mJ/cm2, 25 mJ/cm2 to 50 mJ/cm2, 40 mJ/cm2 to 60 mJ/cm2, 70 mJ /cm2 to 100 mJ/cm2, 15 mJ/cm2 to 30 mJ/cm2, 5 mJ/cm2 to 33 mJ/cm2, 10 mJ/cm2 to 25 mJ/cm2, 12 mJ/cm2 to 19 mJ/cm2, 16 mJ /cm 2 to 24 mJ/cm 2 or 15 mJ/cm 2 to 21 mJ/cm 2 .

As an example, in the first light irradiation step, light having a wavelength of 172±2 nm is applied to the composition to form an excimer in the acrylic resin composition, and 100 ppm of oxygen (O ₂ ) containing nitrogen (N ₂ ) is 12 under 12 conditions. It can be carried out by irradiating for a very short time of 1 to 2 seconds with a light quantity of ~24 mJ/cm2.

The present invention provides an average diameter, height and / Or the frequency can be easily controlled.

In addition, the method of applying the acrylic resin composition on the substrate may be performed by a method known in the art, for example, Mayer (Mayer), D-bar (D-bar), rubber roll (rubber roll) , G / V roll (G / V roll), an air knife (air knife), it may be performed using a slot die (slot die) and the like.

In addition, the second light irradiation step is a step of applying ultraviolet (UV) energy to the surface-contracted composition and/or the cured layer for temporary curing, and a wavelength of 200 to 400 nm, specifically 250 to 380 nm, 280 to 380 nm , 250 to 350 nm, or 280 to 320 nm wavelength light may be irradiated under air conditions. The present invention can improve the curing rate of the acrylic resin composition and/or the cured layer by using light having a wavelength of 200 to 400 nm under air conditions in the second light irradiation step, as well as oxygen molecules (O ₂ ) (O ₃ ) It is possible to induce the effect of cleaning the surface of the cured layer through conversion. At this time, the surface temperature of the pre-cured composition and/or the cured layer may be 20 to 90 ℃, specifically 20 to 80 ℃ or 30 to 70 ℃.

As an example, in the second light irradiation step, light having a wavelength of 250 nm to 400 nm is applied to the composition and/or cured layer at an amount of 250 mJ/cm 2 to 310 mJ/cm 2 in an air condition in a very short period of 1 to 2 seconds. It may be carried out by irradiation for a period of time, in which case the distance between the acrylic resin composition and/or the cured layer and the light source may be 0.5 to 10 mm.

The light irradiated in the present invention may be irradiated according to a known method capable of irradiating light of a wavelength required in each step. For example, light having a wavelength of 400 nm or less in the UV region may be irradiated using a mercury or metal halide lamp.

In addition, in the present invention, the light irradiation time may be a very short time of 1 to 2 seconds, and this light irradiation time is the speed at which the acrylic resin composition moves when irradiated with light, for example, the moving speed of the acrylic resin composition coated on the substrate. can be controlled by For example, the moving speed of the acrylic resin composition and/or the substrate coated with the composition may be 1 to 50 m/min, specifically 5 to 40 m/min, 10 to 40 m/min, 20 to 40 m/min, 30-40 m/min, 15-25 m/min, 5-15 m/min, 15-20 m/min, 35-40 m/min or 18-22 m/min.

Meanwhile, the acrylic resin composition may include a urethane acrylic oligomer, a monomer including one or more reactive functional groups, a polyfunctional monomer, and an initiator.

Specifically, the urethane acryl-based oligomer means an oligomer containing an acryl group as a polymerizable functional group together with a urethane group, and this oligomer rapidly undergoes a radical polymerization reaction due to initiation reaction of a photoinitiator, and produces a coating film having excellent elasticity and toughness, , polyvinyl chloride (PVC) and the like have an advantage of excellent adhesion to the base layer. The urethane acrylate can be synthesized from polyisocyanate, polyol, or an acrylate compound having a hydroxy group, wherein the polyisocyanate is 5-isocyanate-1-(isocyanatemethyl)-1,3,3-trimethylcyclo Hexane, 4,4-dicyclohexylmethane diisocyanate, 1,6-diisocyanate hexane, 1,6-diisocyanate hexane derivative, etc. can be used. As the polyol, polyester polyol, polyether polyol, polycarbonate polyol, etc. may be used, and as the acrylate compound having a hydroxyl group, 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, and the like may be used. In addition, the urethane acrylate oligomer may be a polyfunctional oligomer including two or more polymerizable functional groups. Specifically, a bifunctional oligomer may be used as the urethane acrylate oligomer, and in some cases, one or more of a trifunctional oligomer, a tetrafunctional oligomer, and a hexafunctional oligomer may be further included.

In addition, the weight average molecular weight of the urethane acrylic oligomer may be 100 to 10,000, more specifically 500 to 5,000, 1,000 to 3,000, or 1,500 to 2,000. The present invention can further improve the durability of the decorative sheet by adjusting the weight average molecular weight of the urethane acrylic oligomer in the above range.

In addition, the monomer including at least one reactive functional group may be an acrylic monomer, specifically, may be an acrylic monomer containing a functional group such as a hydroxyl group, an amine group, or a carboxyl group.

For example, the monomer may be 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, 4-hydroxybutyl acrylate, 6-hydroxyhexyl acrylate, 8-hydroxyoctyl acrylate, 2-hydroxy It may include one or more hydroxyl-containing acrylic monomers selected from the group consisting of oxyethylene glycol acrylate, 2-hydroxypropylene glycol acrylate, and caprolactone modified hydroxyl acrylate (CHA).

In addition, the monomer is at least one amino group selected from the group consisting of 1,3-dimethylamylamine, 3-amino ethyl acrylate, 2-(dimethylamino)ethyl acrylate and 2-(diethylamino)ethyl acrylate. It may contain a containing acrylic monomer.

In addition, the monomer is acrylic acid, methacrylic acid, 2-(meth)acryloyloxyacetic acid, 3-(meth)acryloyloxypropyl acid, 4-(meth)acryloyloxybutyric acid, acrylic acid duplex, It may include at least one carboxyl group-containing acrylic monomer selected from the group consisting of itaconic acid, maleic acid and maleic anhydride.

Here, the monomer including at least one reactive functional group may be included in an amount of 30 to 80 parts by weight based on 100 parts by weight of the acrylic oligomer, specifically, 30 to 75 parts by weight, 30 to 75 parts by weight of the monomer together with 100 parts by weight of the acrylic oligomer. 70 parts by weight, 30 to 45 parts by weight, 30 to 40 parts by weight, 35 to 80 parts by weight, 40 to 80 parts by weight, 50 to 80 parts by weight, 60 to 80 parts by weight, 70 to 80 parts by weight, 45 to 70 parts by weight parts, 35 to 55 parts by weight, 40 to 60 parts by weight, 36 to 44 parts by weight, 39 to 52 parts by weight, 31 to 42 parts by weight, 39 to 42 parts by weight, 35 to 70 parts by weight, 55 to 70 parts by weight; 65 to 75 parts by weight, or 46 to 54 parts by weight may be included.

Furthermore, the polyfunctional monomer is an acrylic monomer including two or more polymerizable reactive groups, and is 1,6-hexanediol diacrylate, hexamethylene glycol diacrylate, tetramethylene glycol diacrylate, tetraethylene glycol diacrylate. , triethylene glycol diacrylate, diethylene glycol diacrylate, tripropylene glycol diacrylate, dipropylene glycol diacrylate, pentaerythritol triacrylate, neopentyl glycol dimethacrylate, trimethylolpropaneethoxytri It may include at least one acrylic monomer selected from the group consisting of acrylate and tricyclodecanedimethanol diacrylate.

The polyfunctional monomer may be included in an amount of 1 to 30 parts by weight based on 100 parts by weight of the urethane acrylic oligomer, specifically, 1 to 25 parts by weight, 1 to 20 parts by weight, 1 to 15 parts by weight, together with 100 parts by weight of the acrylic oligomer, 1 to 10 parts by weight, 5 to 30 parts by weight, 10 to 30 parts by weight 15 to 30 parts by weight, 20 to 30 parts by weight, 25 to 30 parts by weight, 10 to 20 parts by weight, 15 to 25 parts by weight, 5 to 15 parts by weight, 6 to 17 parts by weight, 1 to 9 parts by weight, 3 to 13 parts by weight, 6 to 26 parts by weight, 19 to 29 parts by weight, 24 to 29 parts by weight, 14 to 29 parts by weight, or 24 to 26 parts by weight may be included as a part.

In addition, the acrylic resin composition is 10 parts by weight or less, specifically 8 parts by weight or less, and 6 parts by weight based on 100 parts by weight of the composition including the urethane acrylic oligomer, the monomer including one or more reactive functional groups, and the polyfunctional monomer. or less, 3 parts by weight or less, 3 parts by weight or less, 2 parts by weight or less, 2 parts by weight or less, or 1 part by weight or less of the initiator. The present invention can exhibit a high curing rate even when a small amount of the initiator is included in the above range by using short wavelength light in a specific range step by step under different conditions when curing the composition. For example, the curing rate of the cured layer according to the present invention is 60% or more, 70% or more, 80% or more, 70% to 95%, 80% to 99%, 75% to 85%, 85% to 90%, 88% to 93%, 90% to 95%, 87 to 92%, or 93% to 98%.

Furthermore, the composition according to the present invention may further include a filler having high hardness in order to improve durability while partially performing a role of a dendrite-shaped seed formed on the surface of the cured layer. For example, as the filler, one capable of improving surface hardness without affecting the gloss of the cured layer after curing of the composition may be used. Specifically, colloidal silica, alumina, glass beads, organic beads (polymer particles, etc.) may be used as the filler, and their average particle size may be 1 μm to 10 μm, specifically 3 μm to 7 μm. . In the present invention, by controlling the average particle size of the filler within the above range, it is possible to prevent a decrease in workability due to an increase in viscosity due to an excessive filler in the resin composition. In addition, it is possible to prevent the occurrence of cracks in the cured layer without affecting the gloss of the cured layer, and to increase the adhesion between the cured layer and other layers to improve durability.

In addition, the filler may be included in an amount of 8 parts by weight or less based on 100 parts by weight of the composition so as not to impair the glossiness and stain resistance of the cured layer. For example, the filler may include 7.5 parts by weight or less based on 100 parts by weight of the composition, and more specifically, the content of the filler has an upper limit of 7 parts by weight or less, 6.5 parts by weight or less, 6 parts by weight or less, 5.5 parts by weight or less. parts by weight or less, 5 parts by weight or less, 4.5 parts by weight or less, 4 parts by weight or less, 3.5 parts by weight or less, 3 parts by weight or less, 2.5 parts by weight or less, or 2 parts by weight or less, and the lower limit is 0.01 parts by weight or more, 0.05 parts by weight or less. or more, 0.1 parts by weight or more, 0.5 parts by weight or more, or 1 part by weight or more. For example, the filler is 0.1 to 7.5 parts by weight, 0.1 to 6 parts by weight, 1 to 5.5 parts by weight, 4 to 8 parts by weight, 5 to 7 parts by weight, 2 to 4 parts by weight, 0.1 to 4 parts by weight, 0.1 to 3 parts by weight, 0.1 to 2.5 parts by weight, 0.5 to 2.5 parts by weight, 1 to 3 parts by weight, 1.5 to 3 parts by weight, 2.5 to 3 parts by weight, 2.5 to 4 parts by weight, 3 parts to 4.8 parts by weight, 4.0 to 4.5 parts by weight, 1.5 to 3.5 parts by weight, 2.2 to 3.3 parts by weight, or 2.9 to 3.2 parts by weight.

In addition, the acrylic resin composition used in the present invention does not contain a matting agent for reducing the gloss of the cured layer compared to the conventional composition, so 500 cps or less at 25°C, specifically 400 cps or less, 300 cps or less, 250 cps or less, 200 cps or less, 100 to 500 cps, 100 to 400 cps, 100 to 300 cps, 100 to 250 cps, 100 to 400 cps, 150 to 350 cps, 200 to 350 cps, 250 to 350 cps, 280 to 300 cps , 180 to 250 cps, 200 to 280 cps or 210 to 260 cps may have a low viscosity, and may exhibit a low viscosity of 500 cps or less even including some fillers to improve durability of the cured layer. The acrylic resin composition according to the present invention has a low viscosity of 500 cps or less, so that workability is easy without mixing a solvent, and thus, there is an environmental-friendly advantage.

deco sheet

The present invention, in one embodiment, provides a decorative sheet comprising a laminated film according to the present invention.

The decorative sheet according to the present invention includes the laminated film according to the present invention in which a dendrite-shaped radial curved structure is induced on the surface of the cured layer, which is the outermost layer, thereby significantly lowering the surface glossiness without using an excessive matting agent, and contaminants The surface contact area is narrow, so the stain resistance is excellent, and the user's satisfaction is excellent because the dynamic friction coefficient is small and the tactile feeling is excellent. In addition, since the decorative sheet can simultaneously improve the surface hardness and elongation, which are trade-off relationships, excellent workability and durability, it can be usefully used in various fields such as furniture and home appliances.

Hereinafter, the present invention will be described in more detail by way of Examples and Experimental Examples.

However, the following Examples and Experimental Examples are merely illustrative of the present invention, and the content of the present invention is not limited to the following Examples and Experimental Examples.

Examples 1 to 3.

60 parts by weight of urethane acrylate oligomer (molecular weight: 2,240), 22 to 27 parts by weight of 1,3-dimethylamylamine, 5 to 15 parts by weight of tricyclodecanedimethanol diacrylate, 1 as an initiator -Hydroxycyclohexyl phenyl ketone (1-hydroxycyclohexyl phenyl ketone) 3 parts by weight, and a composition comprising colloidal silica (average diameter: 3 to 7 μm) as a filler, 15 cm wide X 30 cm long glycol-modified polyethylene tere It was applied to a phthalate (PETG) substrate and fixed to a light curing device having a structure as shown in FIG. 1 . Then, as shown in Table 1 below, light irradiation was performed stepwise while moving the substrate at a moving speed of 20 ± 1 m/min to prepare a laminated film. At this time, the average thickness of the cured layer was 5 ± 2㎛.

Example 1 Example 2 Example 3 Filler content
[Entire composition
Based on 100 parts by weight] 3 parts by weight 3 parts by weight 3 parts by weight viscosity of the composition 230 cps 230 cps 230 cps first light irradiation Wavelength range 172±5 nm 172±5 nm 172±5 nm irradiance 18 mJ/cm2 18 mJ/cm2 18 mJ/cm2 light source
Street 50±1mm 50±1mm 50±1mm gas condition N ₂ conditions (O ₂ 200 ppm) N ₂ condition
(O ₂ 1,500 ppm) N ₂ condition
(O ₂ 2,500 ppm) 2nd light irradiation wavelength range 200-400 nm 200-400 nm 200-400 nm irradiance 280 mJ/cm2 280 mJ/cm2 280 mJ/cm2 light source
Street 2±1mm 2±1mm 2±1mm gas condition air condition air condition air condition hardening rate ~80% ~80% ~80%

Example 4.

A laminated film was prepared in the same manner as in Example 1, except that a polyvinyl chloride (PVC) substrate was used as the substrate layer.

Comparative Examples 1 to 5.

A laminated film was prepared in the same manner as in Example 1, except for curing the composition under the curing conditions shown in Table 2 below. In the case of Comparative Example 5, it was confirmed that the acrylic resin composition had a high viscosity, so that the composition was not uniformly applied to the surface when applied to the base layer, and thus workability was significantly lowered.

Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Filler content [whole composition
Based on 100 parts by weight] 3 parts by weight 3 parts by weight 3 parts by weight 3 parts by weight 15 parts by weight viscosity of the composition 230 cps 230 cps 230 cps 230 cps 960 cps first
shed
inspection Wavelength range - 172±5 nm 172±5 nm 172±5 nm 172±5 nm irradiance - 18 mJ/cm2 18 mJ/cm2 18 mJ/cm2 18 mJ/cm2 light source
Street - 50±1mm 10±1mm 50±1mm 50±1mm gas condition - N ₂ conditions (O ₂ 7,500 ppm) N ₂ condition
(O ₂ 7,500 ppm) N ₂ condition
(O ₂ 15,000 ppm) N ₂ condition
(O ₂ 200 ppm) second
shed
inspection wavelength range 200-400 nm 200-400 nm 200-400 nm 200-400 nm 200-400 nm irradiance 280 mJ/cm2 280 mJ/cm2 280 mJ/cm2 280 mJ/cm2 280 mJ/cm2 light source
Street 2±1mm 2±1mm 2±1mm 2±1mm 2±1mm gas condition air condition air condition air condition air condition air condition hardening rate ~30% ~50% ~60% ~30% ~80%

Comparative Example 6.

A laminated film was prepared in the same manner as in Comparative Example 2, except that a polyvinyl chloride (PVC) substrate was used as the substrate layer.

Experimental Example 1

Scanning electron microscope (SEM) analysis was performed on the laminated films prepared in Examples 1 to 3 and Comparative Examples 1 to 5 in order to confirm the surface structure of the cured layer, which is the outermost layer of the decor sheet according to the present invention. The results are shown in FIGS. 2 to 4 .

3 and 4, it was found that the laminated films of Examples 1 to 3 according to the present invention include a radial curved structure at a predetermined size and frequency on the surface, and the radial curved structure increases in height from the center to the periphery. It can be seen that it has a lowering dendrite structure. In addition, the laminated films of Examples 1 to 3 had an average size of 5 to 30 μm on the surface of the cured layer and a dentrite shape having a height of 2 to 8 μm at the center of 30 to 70 per unit area (1 mm X 1 mm). confirmed to contain dogs.

In comparison, it was found that the cured layer of the laminated film of Comparative Example 1 in which the first light curing step was not performed did not have a fine curved structure on the surface. In addition, in _{the case of the laminated films of Comparative Examples 2 and 4, in which the concentration of oxygen gas (O 2} ) in nitrogen gas is significantly high, not only appear irregularly on the entire surface of the dendrite shape, but also dendrites as the concentration of oxygen gas increases. As the size and height of the shape increased, the frequency of the dendrite shape rapidly decreased to less than 30 per unit area (1 mm X 1 mm), and eventually it was found to have a flat structure without a fine curved structure.

From these results, the first light irradiation step of irradiating light with a wavelength of less than 200 nm generates an excimer, and the generated excimer generates short-wavelength UV to rapidly accelerate surface hardening of the composition and/or the cured layer, and thus the composition And/or it can be seen that shrinkage occurs on the surface of the cured layer to form a dendrite-shaped radial fine curved structure. In addition, it can be seen that the shape and frequency of the fine curved structure can be controlled by adjusting the conditions for performing the first light irradiation step, particularly the gas conditions, to specific conditions.

Experimental Example 2.

In order to evaluate the surface roughness, glossiness, stain resistance, elongation, touch, and scratch resistance of the laminated film according to the present invention, the following experiments were performed on the laminated films prepared in Examples 1 to 3 and Comparative Examples 1 to 5. was carried out, and the results are shown in Table 3 below:

A) Surface roughness evaluation

The surface roughness (Rz) of the laminated film was measured based on ISO 4287.

B) Glossiness evaluation

Using a gloss meter (Gloss Meter), the 60° glossiness (gloss 60° condition) of the laminated film according to ASTM D2457 was measured.

C) Dynamic friction coefficient evaluation

The laminated films prepared in Examples and Comparative Examples were cut into two specimens of 8 cm X 10 cm and 15 cm X 30 cm, respectively, and cut to 15 cm X 30 cm under an atmosphere of 25° C. and 50% relative humidity. The specimen was fixed with the coated side facing up, and the specimen cut to 8 cm X 10 cm was fixed with the coated side facing down, and a weight having a vertical drag of 4.5 kgf was placed on it and attached. Then, with the coated surfaces of the two specimens facing each other, move at a moving speed of 100 mm/min and measure the force acting between the two friction surfaces when moving the upper specimen. was measured. In addition, the force required to move the upper specimen at a constant speed in the displacement section of 20 mm to 120 mm during the movement of the specimen was measured, and the coefficient of kinetic friction of the laminated film was calculated using the average value of the measured force and Equation 1 below. said:

[Equation 1] Dynamic friction coefficient = Fa/W

In Equation 1 above,

Fa is the average force (unit: kgf) required to move the upper specimen at a constant speed,

W is the normal force (4.5 kgf) applied to the upper specimen.

D) Pollution resistance evaluation

According to DIN 68861:2011, part 1, in this experiment, it was evaluated as a representative name pen (black), ink (purple, red), and mustard. After exposing the sample to the contaminant for 24 hours, the surface is checked by wiping it with a tissue moistened with alcohol. It was graded from 5 grades (no change) to 1 grade (serious damage) according to the recognized evaluation standards, and the criteria are as follows:

Grade 1: Delamination or destruction of the cured layer

Grade 2: Significant change in shape and significant change in gloss or color of the cured layer

Grade 3: No or slight change in the shape of the cured layer, significant change in gloss or color

Grade 4: Slight change in gloss or color without changing the shape of the cured layer

Grade 5: No change in shape, gloss and color of the cured layer.

E) Scratch resistance (hardness) evaluation

The hardness of the laminated film was measured according to ISO 4586-2 using a scratch tester (Erichsen scratch tester 413). Specifically, the diamond tip mounted on the tester was passed through the film surface in a circle (number of rotations: 5 times/min) under a load of 0 to 1 N, and the presence or absence of scratches on the film surface through which the tip passed was determined. . At this time, the conditions for observing the presence or absence of scratches on the film in determining the presence or absence of scratches, that is, the distance between the evaluator's eyes and the film have not been officially determined. Unconfirmed loads were confirmed.

Surface roughness [㎛] glossiness coefficient of friction dynamic friction
amplitude
[kgf] stain resistance Hardness
[N] Example 1 5.999 5.0 0.278 0.53 5 0.7 Example 2 5.878 4.9 0.273 0.62 5 0.7 Example 3 5.492 43.9 0.285 0.53 5 0.7 Comparative Example 1 1.789 79.1 0.322 0.06 3 0.1 Comparative Example 2 3.420 31.4 0.294 0.17 4 0.4 Comparative Example 3 3.559 20.4 0.272 0.08 4 0.4 Comparative Example 4 2.364 69.5 0.280 0.07 3 0.1 Comparative Example 5 4.023 4.7 0.267 0.51 4 0.8

As shown in Table 3, the decorative sheet according to the present invention exhibits low gloss even without including a matting agent in the composition by irradiating a specific range of short-wavelength light in stages under different conditions and curing it, and has stain resistance, processability, and scratch resistance. It can be seen that the properties and texture are excellent.

Specifically, the laminated films of Examples 1 to 3 have a surface roughness (Rz) of 4 μm to 7 μm, glossiness at 60° gloss condition even with a small amount of matting agent is used, and 4.5 kgf normal force condition It was confirmed that the coefficient of kinetic friction and the amplitude of kinetic friction were 0.3 or less and 0.4 to 7 kgf, respectively. In addition, it has excellent stain resistance, and even after being contaminated with a name pen, ink, mustard, etc. for 24 hours, there was no change in the shape of the surface, as well as gloss and color, and it was confirmed to have an excellent hardness of 0.5 to 1N. .

From these results, when the composition is cured by irradiating a specific range of short-wavelength light in stages under different conditions during light curing, the curing rate of the acrylic resin composition is improved as well as the dendrite-shaped radial bent structure formed on the surface of the cured layer. It can be seen that the average size, the height of the center and the frequency per unit area are controlled to control the physical properties of the laminated film, for example, gloss, friction coefficient, stain resistance, hardness, and the like.

Experimental Example 3.

In order to evaluate the processability (formability) of the decorative sheet according to the present invention, the elongation was measured for the laminated films prepared in Example 4 and Comparative Example 6.

Specifically, the laminated films prepared in Example 4 and Comparative Example 6 were cut into a dog-bone shape having a length of 120 mm and a width of 25 mm, and the ends of the laminated film were fixed to each other by 10 mm in upper and lower clamps. . After leaving at 80° C. for 1 minute, the clamp is operated and stretched at a speed of 100 mm/min to evaluate whether the laminated film is damaged at the time when the elongation becomes 200%, that is, whether the shape of the surface of the laminated film is changed. did. At this time, the width of the part for evaluating the elongation was 10 mm, and the evaluation result was marked with ○ or X depending on whether the film was damaged.

As a result, the laminated film prepared in Example 4 did not cause damage to the film at 80°C, but it was confirmed that the laminated film prepared in Comparative Example 6 was damaged. This means that the elongation of the laminated film is improved by forming a cured layer having a dendrite-shaped fine bending structure on the base layer.

100: light curing device
110: light irradiation room
111: first light irradiator (UV irradiator)
112: second light irradiator (UV irradiator)
120: irradiated light
130: conveyor belt
140: gas diaphragm
150: Psalm
200: cross-sectional structure of the deco sheet
210: cured layer
220: base layer
211: dendrite

Claims (14)

base layer; and
The surface includes a cured layer of an acrylic resin composition having a dendrite shape with one point as a center and a radially curved structure extending from the center to the periphery;
30 to 200 of the radial curved structures are present per unit area (1 mm X 1 mm) of the surface; and
Laminated film with a coefficient of kinetic friction of 0.3 or less under the normal force of 4.5 kgf.
According to claim 1,
A laminated film having an average diameter of 5 μm to 200 μm of the radial bent structure.
According to claim 1,
The laminated|multilayer film whose average surface roughness (Rz) of a hardened layer is 1 micrometer - 10 micrometers.
According to claim 1,
A laminated film having a surface glossiness of 6 or less under a gloss 60° condition.
According to claim 1,
The cured layer is a laminate film having a pollution degree of 4 or more when evaluating stain resistance according to DIN 68861:2011, part1.
According to claim 1,
The average thickness of the cured layer is 5 µm to 50 µm.
A first light irradiation step of irradiating the acrylic resin composition coated on the base layer with light having a wavelength of less than 300 nm under an inert gas condition to activate the composition; and
A second light irradiation step of curing the composition by irradiating the activated composition with light having a wavelength of 200 nm to 400 nm under air conditions,
The first light irradiation step is carried out with a light irradiation amount of 1 mJ/cm 2 to 200 mJ/cm 2 under _{nitrogen (N 2 ) conditions in which the concentration of oxygen (O 2} ) is 100 ppm to 4,000 ppm Method of manufacturing a laminated film.
delete 8. The method of claim 7,
The acrylic resin composition,
100 parts by weight of urethane acrylic oligomer;
30 to 80 parts by weight of a monomer containing at least one reactive functional group; and
A method for producing a laminated film comprising 1 to 30 parts by weight of a polyfunctional monomer.
8. The method of claim 7,
The acrylic resin composition is a method of manufacturing a laminated film further comprising one or more fillers selected from the group consisting of silica, alumina, glass beads, and organic beads.
11. The method of claim 10,
A method for producing a laminated film, wherein the filler has an average diameter of 1 µm to 10 µm.
11. The method of claim 10,
The content of the filler is 8 parts by weight or less based on 100 parts by weight of the acrylic resin composition.
8. The method of claim 7,
The viscosity of the acrylic resin composition is 500 cps or less manufacturing method of a laminated film.
A decorative sheet comprising the laminated film according to claim 1 .

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