KR100804826B1 - Olefin-based resin composition for decoration sheets and decoration sheets using the same - Google Patents

Abstract

An olefin-based resin composition for a decoration sheet, a film using the composition, and a multilayered decoration sheet comprising the film are provided to improve calender molding processability, thereby enhancing appearance, heat resistance, printability, adhesion and softness. An olefin-based resin composition comprises 75-95 wt% of a propylene-based resin which comprises 70-95 wt% of a propylene homopolymer or a random copolymer of propylene and other olefin, and 5-30 wt% of a copolymer of ethylene and C4 or more alpha-olefin; 4-20 wt% of a propylene graft copolymer prepared by grafting methyl methacrylate or styrene polymer to a propylene polymer; and 0.5-5 wt% of an additive composition which comprises 50-90 wt% of a lubricant, 5-40 wt% of a heat stabilizer and 5-20 wt% of other additives.

Description

Olefin-based resin composition for decoration sheets and decoration sheets using the same}

1 is a cross-sectional view of a decorative sheet according to an embodiment of the present invention.

The present invention relates to an olefin resin composition for decor sheet, a decor sheet and a decor sheet manufacturing method using the same, more specifically, excellent calender molding workability, in particular, excellent product appearance quality, heat resistance, printability, The present invention relates to an olefin resin composition for a decor sheet capable of implementing adhesiveness and ductility, and a decor sheet and a decor sheet manufacturing method using the same.

In general, a decoration sheet (hereinafter referred to as a 'deco sheet') means a sheet for expressing various decorations such as wooden patterns and abstract patterns on furniture such as dressers and sinks.

Propylene-based resins have excellent heat resistance and mechanical strength, excellent chemical resistance and electrical insulation, and are widely used for plastic films and sheets due to their non-toxicity. However, in general, propylene-based resins adhere to the roll surface during calendering due to the inherent adhesive properties, and in particular, when ductility is imparted, such as plasticized polyvinyl chloride molded articles for decor sheets, the adhesion becomes more difficult and molding products As the surface and appearance quality of the surface is also degraded, it is required to develop products having excellent molding stability and surface quality for calendering.

Some of the polypropylene-based resin compositions developed to be calenderable so far have excellent moldability, but these resins are not ductile and have low heat resistance, such as plasticized polyvinyl chloride, or have limitations on the resin composition to secure molding stability. (Hanhwa Talc, Japan Idemitsu Et 4.0 wt% or less), which has the disadvantage of deteriorating the surface quality. If the surface quality is required to be improved, it is necessary to change the raw materials or adjust the production speed, and increase the cost due to the addition of expensive raw materials or lower productivity due to the adjustment of the production speed. Therefore, the development of a resin composition having excellent calender formability and good appearance quality based on the basic propylene resin is very important for calender shaped decoration sheet production and related industries.

Conventionally, plasticized polyvinyl chloride material, which is used as a material for decor sheet, has excellent physical properties and moldability, but a polyolefin resin, which is emerging as an alternative material, should use chemical products that may cause environmental problems. It is difficult and has a problem of poor appearance quality.

Accordingly, the present invention is to provide an olefin resin composition having excellent molding stability and excellent appearance quality after molding by reducing the adhesiveness during calendering while using a polypropylene resin.

Accordingly, it is an object of the present invention to provide an olefin resin composition for decor sheet which is excellent in calender molding workability, and in particular, can realize product appearance quality, heat resistance, printability, adhesiveness and ductility for decor sheet.

Another object of the present invention is to provide a film produced using the olefin resin composition for decor sheet.

Still another object of the present invention is to provide a multi-layered decor sheet including the film.

The present invention to achieve the above object,

(A) 75 to 95% by weight of a propylene homopolymer or propylene-based resin composition comprising 70 to 95% by weight of random copolymers of propylene and other olefins, and 5 to 30% by weight of copolymers of ethylene and C4 or more α-olefins;

(B) 4 to 20% by weight of propylene graft copolymer in which methacrylate polymer is methylmethacrylate or styrene polymer; And

(C) 0.5 to 5% by weight of an additive composition comprising 50 to 90% by weight of lubricant, 5 to 40% by weight of heat stabilizer and 5 to 20% by weight of other additives

It provides an olefin resin composition for decor sheet comprising a.

In order to achieve the other object of the present invention, the present invention provides a film produced using the olefin resin composition for decoration sheet according to the present invention.

In order to achieve another object of the present invention, the present invention provides a decorative sheet having a multilayer structure including the film according to the present invention.

Since the resin composition according to the present invention has excellent calender molding processability, in particular, the film molded from the olefin resin composition for decorating film can realize excellent product appearance quality, heat resistance, printability, adhesiveness and ductility.

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

The olefin resin composition for decor sheet according to the present invention is (A) 75 to 95% by weight of a propylene resin composition; (B) 4-20% by weight of propylene graft copolymer; And (C) 0.5 to 5% by weight of the additive composition.

The (A) propylene resin composition comprises (a) 70 to 95 wt% of propylene homopolymer or copolymer of propylene and other olefins, and (b) 5 to 30 wt% of copolymer of ethylene and C4 or more α-olefin. .

The (B) propylene graft copolymer is formed by graft polymerization of methyl methacrylate or styrene polymer on a propylene polymer.

The additive composition (C) comprises 50 to 90% by weight of the lubricant, 5 to 40% by weight of the thermal stabilizer and other additives 5 to 20% by weight.

Hereinafter, each constituent component (A) propylene resin composition, (B) propylene graft copolymer and (C) additive composition of the olefin resin composition for decor sheet according to the present invention will be described in detail.

(A) Propylene Resin Composition

(A) The propylene resin composition included in the olefin resin composition for decor sheet according to the present invention comprises (a) a propylene homopolymer or a random copolymer of propylene and another olefin, and (b) a copolymer of ethylene and an α-olefin. It is a mixture containing.

The propylene homopolymer or random copolymer of propylene and other olefins preferably has a melt index (MI) of 0.1 to 10 g / 10 min at 230 ° C. The content of other olefins in the random copolymers of propylene and other olefins is preferably at most 6.5% by weight, more preferably at most 5% by weight.

Preferably, the (a) propylene homopolymer or random copolymer has a value of mmmm fraction of 60% or more, more preferably 75% or more of the pentad fraction (% mmmm) measured by 13 C-NMR. If the mmmm fraction is less than 60%, the heat resistance is lowered and the adhesion increases, which causes difficulty in molding.

Moreover, Preferably, Tm by DSC of the said (a) propylene homopolymer or random copolymer is 130 degreeC or more. Below 130 ° C., sufficient heat resistance is difficult to be exhibited, and the adhesion increases during molding. Typically may have a Tm in the range of 130 ~ 165 ℃. More preferably, it is 140 degreeC or more, More preferably, it is 145 degreeC or more.

Furthermore, in the copolymer of (b) ethylene and C4 or more alpha-olefin contained in the olefin resin composition for decor sheet which concerns on this invention, C4 or more alpha-olefin is mentioned, for example, 1-butene, 1-pentene, 1 -Hexene, 1-octene and the like.

Preferably, the copolymer of (b) ethylene and a C4 or higher α-olefin is an ethylene-butene copolymer (EBM) and an ethylene-octene copolymer (EOM). The content of C4 or more α-olefins in the copolymer of (b) ethylene and C4 or more α-olefins may be 10 to 50% by weight, preferably 15 to 35% by weight.

More preferably, MI is 0.1-20 g / 10min, More preferably, it is 0.1-10 g / 10min at 230 degreeC of the copolymer of the said (b) ethylene and C4 or more alpha-olefin.

For example, when an ethylene-octene copolymer is used as the copolymer of (b) ethylene and a C4 or higher α-olefin according to the present invention, the content of 1-octene is 15 to 45% by weight, more preferably 20 ˜35% by weight, Mooney viscosity ML 1 + 4 (121 ° C.) is 1-50 dl / g, preferably 10-40 dl / g, density is 0.86-0.91 g / cm 3, preferably It may be 0.87-0.90 g / cm 3.

In the (A) propylene resin composition according to the present invention, the composition ratio of (a) propylene homopolymer or random copolymer of propylene and other olefins and (b) copolymer of ethylene and α-olefin is 70 to 95: 5 to 30 , Preferably it is 80-95: 5-20. If the content of the ethylene α-olefin copolymer is less than 5% by weight, the ductility of the molded article will not be sufficient, making it unsuitable for the decor sheet. When included in excess of 30% by weight, the mechanical strength is lowered and the tackiness increases, making molding difficult.

(B) propylene Graft Copolymer

The propylene graft copolymer (B) contained in the olefin resin composition for decor sheet according to the present invention is formed by graft polymerization of methyl methacrylate or styrene polymer on a propylene polymer, and preferably, the methyl methacrylate. Or 30 to 50 wt% graft copolymer of styrene polymer.

Preferably, the propylene graft copolymer has a MI of 0.5 to 20 g / 10 min at 230 ° C., more preferably 0.5 to 5 g / 10 min. If the MI is less than 0.5g / 10min or more than 20g / 10min, the uniformity decreases when mixing with the (A) and (C) components and affects the MI of the final granulated product.

(C) additive composition

The additive composition (C) included in the olefin resin composition for decor sheet according to the present invention includes 50 to 90 wt% of a lubricant, 5 to 40 wt% of a heat stabilizer, and 5 to 20 wt% of other additives. The lubricants include hydrocarbon lubricants such as paraffin wax, polyolefin wax, and polypropylene wax obtained by refining crude oil; Fatty acid amide lubricants such as steramid, oleamide, and erucamide; Ester lubricants such as butyl stearate, glycerol mono stearate, glycerin mono oleate, stearyl stearate and montan waxes reacted with montanic acid; Metal salt lubricants of stearic acid; Fatty acid lubricants such as stearic acid and lauryl acid; Or alcohol type lubricants such as cetyl alcohol and stearyl alcohol can be used alone or in combination. Particularly preferred are polyethylene wax produced by polymerization method in polyolefin wax, polypropylene wax polymerized by metallocene technology, and OP wax produced by reacting montanic acid, and more preferably polyethylene wax produced by polymerization method. It is used by mixing Montan type OP wax. Polyethylene waxes and other waxes prepared by the decomposition method tend to increase roll contamination and stickiness with prolonged use. Polypropylene-based waxes prepared by polymerization or decomposition methods other than metallocene technology have excellent heat resistance, but when the viscosity of the wax is high, productivity may be reduced due to difficulty in molding.

The heat stabilizer may be used alone or in combination with a phenolic antioxidant, HALS (Hindered Amine Light Stabilizer) antioxidant or amine antioxidant. Preferably, as a phenolic antioxidant, for example, tetrakis [methylene-3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate] methane (Tetrakis [methylene-3- (3) , 5-di-tert-butyl-4-hydroxyphenyl) propionate] methane), tris (3,4-di-tert-butyl-4-hydroxybenzyl) isocyanurate (Tris (3,4-di-tert -butyl-4-hydroxybenzyl) isocyanurate), 1,3,5-trimethyl 2,4,6-tris (3,5-di-tert-butyl-4-hydroxybenzyl) benzene (1,3,5-trimrthyl 2,4,6-tris (3,5-di-tert-butyl-4-hydroxybenzl) benzene), 1,1,3-tris (2-methyl-4-hydroxy-5-tert-butyl-phenol) Butane (1,1,3-tris (2-methyl-4-hydroxy-5-tert-butyl-phenol) butane) and the like.

The other additives may be used alone or in combination with a metal deactivator, phosphorus or sulfur-based antioxidants, ultraviolet absorbers and the like. Preferably, a metal deactivator, a phosphorus antioxidant and a sulfur antioxidant are used in combination. In addition, the other additives may further include additives commonly used in the art. Examples thereof include antioxidants, neutralizing agents, nucleating agents, antistatic agents and slip agents. In addition, these may be included within the appropriate content range commonly used in the art.

The content of the lubricant, heat stabilizer and other additives in the (C) additive composition is included in 50 to 90% by weight, 5 to 40% by weight and 5 to 20% by weight, respectively. If the amount of lubricant is low, it is difficult to mold due to adhesion or roll contamination, and increases adhesion and plate out over time. When the content of the heat stabilizer and other additives is small, the stability decreases in the long-term molding due to the increase in adhesion over time.

In the olefin resin composition for decor sheet according to the present invention, the content of the (A) propylene resin composition is 75 to 95% by weight, preferably 85 to 95% by weight of the total composition content. (A) When the content of the propylene resin composition exceeds 95% and the content of other components is reduced, the molding stability decreases with time, and adhesion occurs, resulting in poor molding stability. (A) When the content of the propylene resin composition is less than 75% by weight, sheet molding itself becomes difficult.

In the olefin resin composition for decor sheet according to the present invention, the content of (B) propylene graft copolymer is 4 to 20% by weight, preferably 4 to 15% by weight of the total composition content. (B) When the content of the propylene graft copolymer exceeds 20% by weight, the mechanical strength is lowered and the molding stability is lowered. (B) When the content of the propylene graft copolymer is less than 4% by weight, roll contamination increases and whitening occurs on the surface of the molded product, resulting in deterioration in quality.

In the olefin resin composition for decor sheet according to the present invention, the content of the (C) additive composition is 0.5 to 5% by weight, preferably 0.5 to 3% by weight of the total composition content. (C) When the content of the additive composition exceeds 5% by weight, there is a problem of deterioration in molding stability with time due to plate out of the composition and deterioration in printing performance and adhesion performance after molding. (C) If the content of the additive composition is less than 0.5% by weight, there is a problem of roll surface contamination and adhesion problems and a decrease in molding stability with time.

Preferably, in the olefin resin composition for decor sheet according to the present invention, MI is 0.1 to 5 g / 10 min, when MI is less than 0.1, problems in appearance quality, such as a decrease in productivity and stains in the final product There may be, and when the MI exceeds 5, the molding may be difficult due to deflection and mechanical properties may be degraded.

The manufacturing method of the olefin resin composition for decor sheets which concerns on this invention is not specifically limited, It can manufacture by the method normally known in the art. For example, the polypropylene resin composition of the present invention can be prepared by the conventional mechanical kneading method of the components of the (A) propylene resin composition, (B) propylene graft copolymer and (C) additive composition. Specifically, for example, a method using a general melt kneading machine such as a short-variety mixer, a single screw extruder, a twin screw extruder, and a multi-wheel screw extruder can be adopted. In addition, kneading is preferably performed at a temperature of 180 to 270 ° C.

In addition, the present invention provides a film produced by using the olefin resin composition for decorating film according to the present invention. Preferably, the film may be produced through calendering. The olefin resin composition for decor films of the present invention can be suitably used for film or sheet production by calender molding. In particular, the resin composition according to the present invention is excellent in calender molding processability, because the appearance quality, heat resistance, printability, adhesiveness of the product manufactured using the same, and excellent ductility characteristics, the conventional plasticized polyvinyl chloride Not only can a calender installation using a raw material be used as it is, but it can also be molded into a decor sheet having excellent quality. The film produced using the resin composition according to the present invention is particularly useful as a decor sheet material for furniture and building interior and exterior materials, surface materials for home appliances, adhesive interior films, chassis lepping and the like.

As a calender shaping | molding apparatus used for the film shaping | molding of the olefin resin composition for decoration films which concerns on this invention, anything known in the art, such as a tandem type | mold, an L type | mold, a counter L type, and Z type, can be used. As molding conditions, the resin temperature is 170 to 300 ° C, preferably 180 to 260 ° C, and the roll temperature is 120 to 300 ° C, preferably 140 to 240 ° C.

In addition, the present invention provides a multi-layered decorative sheet including the film according to the present invention. The decor sheet may be formed by stacking multiple films. Preferably, the film according to the present invention may be included in the decor sheet as a colored film layer and / or a transparent film layer. The multi-layered decoration sheet according to the present invention is generally known in the art and comprises the layers constituting the multi-layered decoration sheet. Examples of the layers included in the multi-layer decor sheet include a colored film layer, a printing layer, an adhesive layer, a transparent film layer, and the like. In addition, the primer layer, the surface layer may be further included.

If each of the layers to explain in more detail, the colored film layer serves to add hiding power, provide gas barrier properties. The primer layer is generally formed by using a material such as polyurethane or polyisocyanate, and is generally formed by using a material such as polyester or polyisocyanate as an adhesive auxiliary layer, so that the printing and adhesion of the olefin-based film are well performed. Play a role. A printing layer is generally formed using materials, such as a polyurethane and polyvinyl, and can give a design, such as a neck pattern / abstract pattern, and can give characteristics of heat resistance, light resistance, and weather resistance. The transparent film layer is generally formed using a material such as polypropylene, polyethylene, and the like to protect the lower printed layer, and can also provide light resistance and weather resistance and block gas. The surface layer is generally formed using a material such as acrylate, and is laminated in order to impart stain resistance, scratch resistance, light resistance, weather resistance, and the like.

Hereinafter, with reference to the accompanying drawings to illustrate a multi-layered decoration sheet according to the present invention will be described in more detail. It is only intended to more clearly understand the present invention and is not intended to limit the scope of the present invention.

1 is a cross-sectional view of a decorative sheet according to an embodiment of the present invention. The structure of the decor sheet of Figure 1 is formed by sequentially stacking a primer layer, a colored film layer formed of a film according to the present invention, a primer layer, a printing layer, an adhesive layer, a transparent film layer, a surface layer. The colored film layer and the transparent film layer is a layer formed of a film according to the present invention. A primer layer is formed on each of the upper and lower portions of the colored film layer, and the upper primer layer is a layer for improving adhesion between the colored film layer and the printing layer, and the lower primer layer adheres the multi-layered decorative sheet of the present invention. When adhering to water (MDF, PB, PVC, PP, etc.), it serves to increase the adhesion between the adherend and the decor sheet. In fact, in the absence of the upper primer layer, a phenomenon occurs in which the transparent film layer and the colored film layer are easily peeled off in use. When there is no lower primer layer, peeling with the adherend occurs.

Hereinafter, the structure and effects of the present invention will be described in more detail with specific examples and comparative examples, but these examples are only intended to more clearly understand the present invention and are not intended to limit the scope of the present invention.

[ Example ]

Example  One

(a) a propylene homopolymer or a polypropylene (PP) as a random copolymer of propylene and other olefins; and (b) an ethylene-butene copolymer (EBM) as a copolymer of ethylene and a C4 or higher α-olefin; ) A propylene resin composition was prepared. (B) Methyl methacrylate was prepared by polymerizing propylene polymer as propylene graft copolymer (PP-g-PMMA). The components (A) and (B) were combined with a lubricant, a heat stabilizer and other additives, and the composition ratio between the components is shown in Table 1. As a lubricant, a polyethylene wax produced by a polymerization method and a montan OP wax were mixed, and as a heat stabilizer, tetrakis [methylene-3- (3,5-di-tert-butyl-4-hydroxy), a phenolic antioxidant, was used. Phenyl) propionate] methane (Tetrakis [methylene-3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate] methane) was used. As other additives, a metal deactivator, a phosphorus antioxidant, and a sulfur antioxidant were mixed and used. This mixture was driven for at least 5 minutes using a Henschel mixer to obtain a final resin composition.

Example  2

(b) Ethylene-octene copolymer (EOM) was used as copolymer of ethylene and C4 or more α-olefin, and (B) PP-g-PS prepared by polymerizing styrene to propylene polymer as propylene graft copolymer. A resin composition was obtained in the same manner as in Example 1 except for changing the composition ratio between the components as shown in Table 1.

Example  3

(b) Ethylene-octene copolymer (EOM) was used as copolymer of ethylene and C4 or more α-olefin, and the same method as in Example 1 except that the composition ratio between each component was changed as shown in Table 1. A resin composition was obtained.

Example  4 ~ 5

Each resin composition was obtained in the same manner as in Example 1 by using the same components as in Example 1, except that only the composition ratio was changed as shown in Table 1, respectively.

Comparative example  One

Each resin composition was obtained in the same manner as in Example 1 by using the same components as in Example 1, except that only the composition ratio was changed as shown in Table 1, respectively.

Comparative example  2

Polypropylene (PP) and ethylene-butene copolymer (EBM) were combined in the same composition ratio as in Table 1 to obtain a resin composition in the same manner as in Example 1.

Comparative example  3

Polypropylene (PP), ethylene-butene copolymer (EBM), and a lubricant mixed with polyethylene wax and montan OP wax prepared by the polymerization method were mixed in the composition ratio as shown in Table 1, and the resin was prepared in the same manner as in Example 1. A composition was obtained.

Comparative example  4

Polypropylene (PP), ethylene-butene copolymer (EBM), lubricants prepared by the polymerization process, and lubricants mixed with montan-based waxes and tetrakis [methylene-3- (3,5-di-tert-butyl- 4-hydroxyphenyl) propionate] methane (heat stabilizer) was blended in the same composition ratio as in Table 1 to obtain a resin composition in the same manner as in Example 1.

Comparative example  5

Polypropylene (PP), ethylene-butene copolymer (EBM), polyethylene wax produced by the polymerization method, and lubricants mixed with montan-based OP wax, and other additives used in Example 1 were formulated in the same composition ratios as in Table 1. A resin composition was obtained in the same manner as in Example 1.

Comparative example  6

Polypropylene (PP), ethylene-butene copolymer (EBM), lubricants prepared by polymerization of polyethylene wax and montan OP wax, tetrakis [methylene-3- (3,5-di-tert-butyl- 4-hydroxyphenyl) propionate] methane (heat stabilizer) and the other additives used in Example 1 were combined in the same composition ratio as in Table 1 to obtain a resin composition in the same manner as in Example 1.

(a) (b) (B) Lubricant Heat stabilizer Other additives Example 1 PP: 78 EBM: 9 PP-g-PMMA: 10 2.1 0.6 0.3 Example 2 PP: 78 EOM: 9 PP-g-PS: 10 2.1 0.6 0.3 Example 3 PP: 73 EOM: 14 PP-g-PMMA: 10 2.1 0.6 0.3 Example 4 PP: 88 EBM: 5 PP-g-PMMA: 5 1.4 0.4 0.2 Example 5 PP: 75 EBM: 18 PP-g-PMMA: 5 1.4 0.4 0.2 Comparative Example 1 PP: 47 EBM: 46 PP-g-PMMA: 5 1.4 0.4 0.2 Comparative Example 2 PP: 90 EBM: 10 - - - - Comparative Example 3 PP: 89 EBM: 10 - One - - Comparative Example 4 PP: 89 EBM: 9 - 1.5 0.5 - Comparative Example 5 PP: 89 EBM: 9 - 1.5 - 0.5 Comparative Example 6 PP: 89 EBM: 10 - 1.4 0.4 0.2

(Sheet molding)

Each of the resin compositions obtained in Examples 1 to 5 and Comparative Examples 1 to 6 was kneaded using a twin screw extruder (45 mm diameter) set at 230 ° C to prepare pellets for the resin composition. The pellet of each obtained resin composition was shape | molded the sheet | seat through the calender shaping | molding apparatus.

(Property evaluation)

For each of the sheets prepared from Examples 1 to 5 and Comparative Examples 1 to 6, the roll peelability, roll contamination, and the surface state of the molded article during sheet molding were observed and evaluated according to the following criteria. This is shown in Table 2.

(1) Roll peelability

(Double-circle): There is no roll adhesion and the shaping | molding state is favorable.

○: There is little or no roll adhesion, but molding is sufficient.

(Triangle | delta): Although initial stage is favorable, Roll adhesion increases with time.

X: adhesiveness is high and work is difficult.

(2) Roll contamination

(Double-circle): There is no plate out in a roll surface, and it is favorable.

○: There is little or no plate out on the roll surface, but there is no problem.

(Triangle | delta): Although initial stage is favorable, plate out occurrence increases with time.

×: Roll out occurs partially on the front of the roll.

(3) molded article surface condition

(Double-circle): The thickness uniformity and surface state of a molded article are favorable.

(Circle): There exists a little difference in curvature on the thickness and the surface of a molded product, but is within the acceptable range.

(Triangle | delta): Molding is possible, but there is considerable thickness difference. Surface condition is also rough.

X: Sampling of the molded product is difficult.

(All of the evaluation items are ○ or above.)

Roll Peelability Roll contaminant Molded Surface Condition Example 1 ◎ ◎ ◎ Example 2 ◎ ○ ○ Example 3 ○ ○ ○ Example 4 ◎ ◎ ◎ Example 5 ○ ◎ ○ Comparative Example 1 × △ △ Comparative Example 2 × × × Comparative Example 3 △ △ △ Comparative Example 4 △ △ △ Comparative Example 5 △ △ △ Comparative Example 6 △ △ △

From the results shown in Table 2, any of the resin compositions of Examples 1 to 5 had excellent roll resistance and peelability, excellent sheet state, and a molded article having a ductility such as a plasticized polyvinyl chloride molded body. have. However, when the content of the olefin-based elastomer increases as in Comparative Example 1, the ductility increases and the calendar processing is difficult due to the roll adhesion. In the absence of a lubricant, thermal stabilizer, and other additives, as in Comparative Example 2, roll peelability is reduced, which makes roll contamination and molding difficult. As in the case of Comparative Example 3, when only the lubricant is prescribed, initial calendar molding is possible, but as time passes, roll peelability decreases and there is a variation in thickness in the sheet due to the difference in adhesion depending on the roll position. Smoothness and appearance quality will be degraded. In the case of additionally prescribing a heat stabilizer or other additives, as in Comparative Examples 4 and 5, the roll adhesiveness is increased and surface quality is deteriorated over time compared to Comparative Example 3. In the case of Comparative Example 6, the initial roll peelability is generally good, but contamination of some roll surfaces due to lubricant discharge and whitening of the surface of the molded article results in deterioration of appearance quality. Tackiness is increased.

(Deco sheet manufacture)

Example  6

2 parts by weight of the coating film-forming agent and 18 parts by weight of a mixed solvent of methyl ethyl ketone and toluene were mixed with 100 parts by weight of the polyurethane copolymer to obtain a primer composition. Separately, 100 parts by weight of a hexamethylene diisocyanate (HMDI) as a curing agent was mixed with 100 parts by weight of a mixture of xylene, methyl ethyl ketone and butyl acetate as a solvent to prepare a curing agent composition. Immediately before applying to the adherend, the primer composition and the curing agent composition were mixed at 100: 5 to obtain a primer treatment composition. Gravure knife coating the primer treatment composition at a coating speed of 30 m / min below the colored film to be adhered, and dried to form a surface treatment film to a thickness of 5㎛. The same primer layer as the primer is formed on the colored film upper layer. 50 parts by weight of a vinyl copolymer, 50 parts by weight of a vinyl copolymer, 5-15 parts by weight of a pigment for coloration, methyl ethyl ketone as a diluent, and an IPA mixed solvent 18 weight part was mixed and the ink composition was obtained. The ink composition was formed on the colored film as an adherend through gravure printing. In order to form an adhesive layer on the printed layer again, 40 parts by weight of an ethyl acetate (EA) mixed solvent as a diluent was mixed with 100 parts by weight of a polyester copolymer to obtain an adhesive composition. Separately, 100 weight part of polyisocyanate which is a hardening | curing agent was mixed at 100: 5, and the adhesive composition was obtained just before apply | coating to a to-be-adhered body. A gravure knife coating of the adhesive treatment composition at a coating speed of 30 m / min is performed on the printed layer of the colored film as an adherend, and dried to form a surface treatment film having a thickness of 5 μm. If the thickness of the primer treatment film is less than 3㎛, it is not preferable because the adhesive strength with the upper transparent film layer is more than 10㎛ due to the problem of lowering the working speed. After embossing the whole sheet, 40 weight part of methyl ethyl ketones which are diluents were mixed with 100 weight part of polyacrylate copolymers, and the surface treatment composition was obtained. Separately, 100 parts by weight of the curing agent hexamethylene diisocyanate (HMDI) was mixed with 100 parts by weight of the total weight of the solvents xylene, methyl ethyl ketone and butyl acetate to prepare a curing agent composition. The surface treating agent composition and the curing agent composition were mixed at 100: 5 to obtain a surface treating agent composition. Gravure knife coating the surface treatment composition on the transparent film layer as an adherend at a coating speed of 20 m / min, and then dried to form a surface treatment film with a thickness of 5 ㎛. Deco sheet cross section of the final result was formed as shown in FIG.

The olefin resin composition for decorating film according to the present invention is excellent in calender molding processability, in particular, the film molded with the olefin resin composition for decorating film can realize excellent product appearance quality, heat resistance, printability, adhesion and ductility. have.

Claims (15)

(A) 75 to 95% by weight of a propylene homopolymer or propylene-based resin composition comprising 70 to 95% by weight of random copolymers of propylene and other olefins, and 5 to 30% by weight of copolymers of ethylene and C4 or more α-olefins; (B) 4 to 20% by weight of propylene graft copolymer in which methacrylate polymer is methylmethacrylate or styrene polymer; And (C) 0.5 to 5% by weight of an additive composition comprising 50 to 90% by weight of lubricant, 5 to 40% by weight of heat stabilizer and 5 to 20% by weight of other additives Olefin resin composition for decor sheet comprising a. The decor sheet according to claim 1, wherein the propylene homopolymer or the random copolymer of propylene and other olefins has a mmmm fraction of 60% or more in the pentad fraction (% mmmm) measured by 13 C-NMR. Olefin resin composition. The olefinic resin composition for a decor sheet according to claim 1, wherein the propylene homopolymer or a random copolymer of propylene and another olefin has a Tm of 130 ° C or higher by DSC. The olefin resin composition for a decor sheet according to claim 1, wherein the content of the C4 or more α-olefin in the copolymer of ethylene and C4 or more α-olefin is 10 to 50% by weight. The olefin resin composition for a decor sheet according to claim 1, wherein the melt index (MI) of the copolymer of ethylene and C4 or more α-olefin is 0.1 to 20 g / 10 min. According to claim 1, wherein the content of the methyl methacrylate or styrene polymer in the propylene graft copolymer grafted with methyl methacrylate or styrene polymer in the propylene polymer is 30 to 50% by weight Olefin resin composition for decor sheet. The olefin resin composition for decor sheet according to claim 1, wherein the propylene graft copolymer has a MI of 0.5 to 20 g / 10 min. The decor sheet according to claim 1, wherein the lubricant is one or more mixtures selected from the group consisting of hydrocarbon lubricants, fatty acid amide lubricants, ester lubricants, metal salt lubricants, fatty acid lubricants and alcohol lubricants. Olefin-based resin composition. According to claim 1, wherein the heat stabilizer is one or a mixture of two or more selected from the group consisting of phenolic antioxidant, HALS (Hindered Amine Light Stabilizer) antioxidant or amine antioxidant olefins for decor sheet Resin composition. The olefin resin composition for decor sheet according to claim 1, wherein the other additive is one or a mixture of two or more selected from the group consisting of a metal deactivator, a phosphorus- or sulfur-based antioxidant, and an ultraviolet absorber. The film using the olefin resin composition for decor sheets of any one of Claims 1-10. Deco sheet of a multilayer structure comprising the film according to claim 11. A multi-layered decor sheet comprising a transparent film layer, an adhesive layer, a printing layer and a colored film layer, wherein at least one of the transparent film layer and the colored film layer is a film according to claim 11 Deco sheet. The decor sheet of claim 13, wherein the decor sheet further comprises a surface layer and a primer layer, and the primer layer is formed on one or both sides of the colored film. The decor sheet according to claim 15, wherein the decor sheet has a structure of a primer layer / colored film layer / primer layer / printing layer / adhesive layer / transparent film layer / surface layer.

Images