WO2019050187A1 - Metal texture synthetic resin profile for windows and doors - Google Patents

Abstract

The present invention relates to a synthetic resin profile for windows and doors and, more specifically, to a metal texture synthetic resin profile for windows and doors, the profile having a metal texture surface layer on at least one surface of an indoor surface, an outdoor surface, a mounting surface and a grounding surface of a main body through coextrusion by using a surface layer composition comprising an acrylic resin, a fluororesin, an impact modifier and a metal powder, and thus the present invention has improved exterior beauty by having a metal texture.

Description

Synthetic resin profiles with metal texture

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin profile for a window, and more particularly, to a synthetic resin profile for a window using a surface layer composition including acrylic resin, fluororesin, impact modifier, and metal powder on at least one of an inner side surface, And a surface layer of a metal texture is formed by coextrusion so that the metal texture imparted to the metal texture enhances the beauty of the appearance by imparting the metal texture.

Various windows are provided inside and outside of the building for the purpose of access control and mining.

Such a window can be divided into a sliding door type, a hinged door type, or a fixed type according to the opening and closing method, and a sliding window window is formed in a middle and large window installed in a living room and a veranda of a house.

On the other hand, as the quality of life increases, an aluminum window having a high quality appearance and a metal texture is manufactured using aluminum, but the manufacturing cost of the aluminum window is too high and the heat insulating performance is deteriorated.

Therefore, in order to solve the problem, a synthetic resin window formed of a synthetic resin profile such as PVC (Poly Vinyl Chloride) resin is increasingly being manufactured.

 Since the synthetic resin is relatively inexpensive and is relatively easily formed by the extrusion method, the synthetic resin window formed of the synthetic resin profile can reduce the manufacturing cost compared with the aluminum window, and not only the mass production is smooth, but also the characteristics of the material itself Since each part is relatively tightly bonded, the heat insulating performance can be improved as compared with an aluminum window.

However, since the synthetic resin window is formed of a single color synthetic resin profile, there is a problem that a decorative effect can not be expected.

For this reason, coextrusion is carried out using facilities as disclosed in Korean Patent Laid-Open No. 10-2012-0139159 (published on Dec. 27, 2012) and the like, and the ASA (Acrylic Styrene acrylonitrile) resin composition or a decorative sheet by attaching a decorative sheet to the body.

However, the surface layer formed of the ASA resin composition has a problem that the ASA resin itself is poor in colorability and has poor color tone and low gloss, so that the synthetic resin texture is still good, and the decorative sheet is detached from the main body. There was a problem.

For the above reasons, in the field of the art, there has been attempted to develop a synthetic resin profile for a window that can enhance the appearance of the exterior through a surface layer formed of an ASA resin composition and a unique decorative effect that can not be expected through the attachment of a decorative sheet, , So far, satisfactory results have not been obtained.

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a metal texture which is low in colorability and gloss of a surface layer formed on a synthetic resin profile through conventional coextrusion, The present invention provides a synthetic resin profile for a window.

To achieve the above object, according to the present invention, there is provided a synthetic resin profile for a window,

An outdoor side surface exposed to an indoor side, an outdoor side surface exposed to an outdoor side, a seating surface formed between an upper portion of the indoor side surface and an upper portion of the outdoor side surface, A body formed between the lower portions and including a ground surface in contact with the floor;

(A), a fluororesin (B), an impact modifier (C), and a metal powder (D), which are formed on the outer surface of the body and are formed by coextrusion .

The surface layer may be formed on at least one of the interior side surface, the outdoor side surface, the seating surface, and the ground surface of the main body.

The surface layer may comprise a hairline emboss.

The synthetic resin profile for a window provided with the metal texture according to the present invention is provided with a metal texture by the surface layer formed on the outer surface of the body, and the gloss and the like are improved, so that a unique decoration So that the beauty of the appearance can be improved.

Further, in the synthetic resin profile for a window provided with a metal texture according to the present invention, when the surface layer for imparting a metal texture includes a hair line emboss, the metal texture is more emphasized by the hair line embossing, As a result, the beauty of the appearance can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary view showing an example in which a surface layer is formed on one surface of a body in a synthetic resin profile for a window provided with a metal texture according to the present invention; FIG.

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a synthetic resin profile for a window provided with a metal texture,

3 is an illustration showing an example in which a surface layer is formed on three sides of a main body in a synthetic resin profile for a window provided with a metal texture according to the present invention.

4 is an illustration showing an example in which a surface layer is formed on all four sides of a main body in a synthetic resin profile for a window provided with a metal texture according to the present invention.

5 is a photograph showing an example in which a hair line emboss is formed on a surface layer in a synthetic resin profile for a window provided with a metal texture according to the present invention.

6 is a view showing a synthetic resin profile for a window provided with a metal texture according to the present invention applied to a window frame rather than a window frame frame.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, a synthetic resin profile (A) for a window provided with a metal texture according to the present invention includes a main body 10 and a surface layer 20.

The main body 10 includes an inner side surface 11 exposed to the indoor side, an outdoor side surface 12 exposed to the outdoor side, an upper side of the indoor side surface 11 and an upper side of the outdoor side surface 12, And a ground plane 14 formed between a lower portion of the room side surface 11 and a lower portion of the outdoor side surface 12 and in contact with the floor.

The main body 10 is formed in the same manner as the main body of the synthetic resin profile for a general window, and forms a square window frame frame by welding by mutual welding or the like. For example, the body may be formed of a body composition including a PVC resin, a processing aid, an impact modifier, a stabilizer, an inorganic filler, a lubricant, and the like.

The surface layer 20 is formed on the outer surface of the main body 10 and is formed by coextrusion and includes a surface layer 20 containing an acrylic resin (A), a fluororesin (B), an impact modifier (C) ≪ / RTI >

The acrylic resin (A) may be a mixture of polymethyl methacrylate (a1) and rubber (a2) in order to improve the coloring property and glossiness as compared with the conventional ASA resin.

The polymethyl methacrylate (a1) may be a homopolymer of methyl methacrylate and a copolymer of methyl methacrylate and another acrylic monomer.

The acrylic monomers may be alkyl acrylate monomers or alkyl methacrylate monomers or mixtures of alkyl acrylate monomers and alkyl methacrylate monomers.

Examples of the alkyl acrylate monomers include methyl acrylate, ethyl acrylate, n-propyl acrylate, isopropyl acrylate, n-butyl acrylate, isobutyl acrylate, sec-butyl acrylate, Butyl acrylate, butyl acrylate, amyl acrylate, isoamyl acrylate, n-hexyl acrylate, cyclohexyl acrylate, 2-ethylhexyl acrylate, pentadecyl acrylate, dodecyl acrylate, isobornyl acrylate, At least one selected from the group consisting of benzyl acrylate, phenoxyethyl acrylate, 2-hydroxyethyl acrylate, 2-methoxyethyl acrylate, glycidyl acrylate and allyl acrylate can be used.

Examples of the alkyl methacrylate monomer include methyl methacrylate, ethyl methacrylate, n-propyl methacrylate, isopropyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, sec- Acrylates such as methyl methacrylate, ethyl methacrylate, butyl methacrylate, butyl methacrylate, butyl methacrylate, amyl methacrylate, isoamyl methacrylate, n-hexyl methacrylate, cyclohexyl methacrylate, Methacrylate, isobornyl methacrylate, phenyl methacrylate, benzyl methacrylate, phenoxyethyl methacrylate, 2-hydroxyethyl methacrylate, 2-methoxyethyl methacrylate, glycidyl methacrylate At least one selected from the group consisting of acrylate and allyl methacrylate can be used.

Preferably, the polymethyl methacrylate may be a copolymer of methyl methacrylate and methyl acrylate.

The polymethyl methacrylate (a1) may have a weight average molecular weight (Mw) of 60,000 to 150,000, preferably 70,000 to 130,000. When the amount is less than the above range, the impact strength is lowered and the compatibility with the impact modifier described later may be deteriorated. When the amount is in excess of the above range, the workability is lowered due to the lowering of fluidity.

The rubber (a2) may be a rubber known in the art for improving the impact resistance without particular limitation, and preferably it may be a core-shell rubber.

The core-shell rubber generally has a shape in which a core comprising a polymeric material having elastomeric or rubber properties is surrounded by a shell comprising a non-elastomeric polymeric material.

The core may be a core polymer comprising at least one monomer selected from the group consisting of diene monomers and acrylic monomers.

The diene monomer may be at least one member selected from the group consisting of butadiene, isoprene, and chloroprene, and the acrylic monomer may include, for example, methyl methacrylate, methyl acrylate, ethyl acrylate, ethyl methacrylate, butyl acrylate Butyl methacrylate, 2-ethylhexyl acrylate, and lauryl methacrylate.

The content of at least one selected from the diene monomers and the acrylic monomers may be in the range of 50-85 wt%, preferably 55-80 wt%, in the core polymer. If it is less than the above range, there is a problem that the glass transition temperature of the core-shell rubber rises.

The core polymer may contain one or more vinyl monomers selected from the group consisting of styrene,? -Methylstyrene, vinylnaphthalene, acrylonitrile and methacrylonitrile copolymerizable with the diene monomer and the acrylic monomer for controlling the glass transition temperature .

The vinyl monomer may be contained in the core polymer in an amount of 15-50 wt%, preferably 20-45 wt%. If it exceeds the above range, the glass transition temperature of the core-shell rubber may increase.

In order to control the degree of crosslinking of the core polymer, a crosslinking agent may be used. Examples of the crosslinking agent include divinylbenzene, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, 1,3 -Butylene glycol dimethacrylate, aryl methacrylate, 1,3-butylene glycol diacrylate, and the like.

The crosslinking agent is preferably used in an amount of 1-5 wt%, preferably 1-3 wt%, in the core polymer. When the amount is less than the above range, the effect of the crosslinking agent is insignificant, thereby deteriorating the physical properties of the product. If the amount is in excess of the above range, excessive crosslinking may cause a problem that the core polymer can not have a role as an elastomer.

The shell of the core-shell rubber is highly compatible with the polymethyl methacrylate, and examples thereof include methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, butyl acrylate, butyl methacrylate , 2-ethylhexyl acrylate, styrene,? -Methylstyrene, acrylonitrile, and methacrylonitrile can be used.

The average particle size of the rubber (a2) is preferably 50-300 nm, and preferably 50-250 nm. When the amount is less than the above range, the effect of improving the impact strength is insignificant, and when it exceeds the above range, scratch resistance, gloss and permeability are lowered due to rubber placed on the surface.

Further, the glass transition temperature of the rubber (a2) is more preferably -60 캜 to 0 캜, preferably -40 캜 to -20 캜. When the amount is less than the above range, the effect of using rubber is insufficient and the physical properties of the product deteriorate. When the amount is in excess of the above range, the extrusion processability is lowered.

It is more preferable that the acrylic resin (A) has a light transmittance of 75-95%, and preferably 80-92%. If it is less than the above range, it may be preferable to have a light transmittance within the above range since the color is dark when the color is reproduced by color mixing, and the amount of pigment to be used is increased when it exceeds the above range.

It is further preferable that the acrylic resin (A) has a melt flow index (MFI) of 1-10 g / 10 min (230 ° C., 3.8 kg), preferably 2-8 g / 10 min (230 ° C., 3.8 kg). When the amount is less than the above range, the flowability of the acrylic resin (A) is lowered and the surface layer composition is not applied to the portion opposite to the injection portion of the mold during the co-extrusion process. Thus, the white color of the main body can be revealed. It is preferable to have a melt index within the above range.

The acrylic resin (A) may be contained in the surface layer composition in an amount of 30-60 wt%, 35-50 wt%, or 35-45 wt%. If the amount is less than the above range, the relatively expensive fluorine resin content is increased to increase the raw material value. If the content is in excess of the above range, the fluorine resin content is relatively decreased to decrease scratch resistance, gloss, water repellency, It is preferable to use it as the inside.

The fluororesin (B) is a polymer of vinylidene fluoride excellent in weather resistance or a copolymer of vinylidene fluoride and hexafluoropropylene for imparting resistance to crushing, gloss, water repellency and fluidity to a synthetic resin profile for a window Lt; / RTI >

More preferably, the fluorine resin (B) has a melt flow index of 1-20 g / 10 min (230 ° C., 2.16 kg), preferably 2-15 g / 10 min (230 ° C., 2.16 kg). If it is outside the above range, the processability is deteriorated, so that it is preferable to have a melt flow index within the above range.

The fluororesin (B) may be contained in the surface layer composition in an amount of 15-45 wt%, 20-40 wt%, or 25-35 wt%. When the amount is less than the above range, the crush resistance, gloss, water repellency, and fluidity are deteriorated. If it exceeds the above range, the value of the raw material is increased compared to the effect of increasing the physical property, which is not economical.

The impact modifier (C) may be in the form of a phase separated particle in which the rubber (c1) is uniformly dispersed in the epoxy resin (c2) for reinforcing the impact strength of the surface layer. Since the rubber (c1) is the same as the rubber (a2) described above, its description is omitted.

The rubber (c1) may be dispersed in the epoxy resin (c2) in an amount of 10 to 40% by weight, preferably 15 to 30% by weight. If it is outside the above range, its role as a rubber is deteriorated and it can not serve as an impact modifier, and therefore it is preferable to include rubber within the above range.

The epoxy resin (c2) is capable of dispersing the rubber (c1), and examples thereof include bisphenol A, bisphenol A glycidyl ether, brominated bisphenol A, bisphenol F, bisphenol F glycidyl ether, bisphenol K , Bisphenol S, hydroquinone, resorcinol, 1,1-cyclohexane bisphenol, ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol, butanediol, hexanediol, cyclohexanediol, 1,4- (Hydroxymethyl) benzene, 1,4-bis (hydroxymethyl) cyclohexane, 1,3-bis (hydroxymethyl) benzene, Cyclohexanedimethanol diglycidyl ether, diglycidyl ether of hexahydrophthalic acid, cyclooctene diepoxide, divinylbenzene diepoxide, 1,7-octadienedepoxide , 1,3-butadiene diepoxide, 1,5-hexadienediepoxide, 4-cyclohexane Cyclohexenylmethyl carboxylate, phenol novolak, cresol novolak, glycidyl ether derivatives of bisphenol A novolac, triglycidylpara- amine phenol and tetraglycidyl methylenedianiline And the like.

For example, the impact modifier (C) may be one in which a core-shell styrene-butadiene rubber (SBR) is evenly dispersed in a matrix of triglycidylpara-amine phenol epoxy.

The impact modifier (C) may be contained in the surface layer composition in an amount of 15-40 wt%, 15-35 wt%, or 20-30 wt%. If it is less than the above range, the impact strength is lowered, and if it exceeds the above range, the raw material value is increased and the effect of improving tensile elongation and gloss of the surface layer during extrusion is small.

The metal powder (D) is for imparting a metallic feel, and preferably an aluminum flake which realizes a metal texture similar to an actual metal surface is preferable, but not always limited thereto.

The metal powder (D) may be contained in the surface layer composition in an amount of 0.5-5 wt%, 0.5-3 wt%, or 1-2 wt%. When the amount is less than the above range, the metallic feel is insignificant. When the amount is in excess of the above range, the compatibility with the acrylic resin (A) and the fluororesin (B) is lowered and may remain in the mold, thereby lowering the mass productivity. The adhesion of the surface layer composition deteriorates on the outer surface, so that it is preferably used within the above range.

The surface layer composition may optionally further comprise pearl and pigment in the surface layer composition, each in an amount of 0.5-3% by weight.

The pearl may be included in the surface layer composition in an amount of 0.5-3 wt%, 0.5-2 wt%, or 1-2 wt%, which gives the metal powder (D) together with a feeling of luxury and a soft feeling. If it is outside the above-mentioned range, it is preferable to use it within the above-mentioned range since the effect of realizing a luxurious feeling of soft feeling is insignificant.

The above-mentioned pigments are preferably inorganic pigments for imparting color to the surface layer and having excellent weather resistance and chemical resistance. The inorganic pigment may be contained in the surface layer composition in an amount of 0.5-3 wt%, 0.5-2 wt%, or 1-1.5 wt%. If it is less than the above range, the color tone of the surface is not revealed. If it exceeds the above range, the color uniformity is lowered and the productivity is lowered due to the increase of the production time.

The surface layer composition may further include one kind of other additives selected from the group consisting of a lubricant, a stabilizer, an antioxidant, a UV stabilizer, a heat resistant agent, a flame retardant, and an antistatic agent. The above-mentioned other additive may be a conventional kind used in the art, and thus the kind and content thereof are not specifically limited in the present invention.

The surface layer 20 may be formed on at least one of the inner side surface 11, the outer side surface 12, the seating surface 13, and the ground surface 14 of the main body 10.

Therefore, a metal texture can be imparted to at least one surface of the outer surface of the main body 10 through the surface layer 20.

For example, the surface layer 20 may be formed on the inner side surface 11 of the body 10 as shown in FIG. 1, and the surface layer 20 may be formed on the inner side surface 11 of the body 10, Three or four of the interior side surface 11, the outdoor side surface 12, the seating surface 13 and the ground surface 14 of the main body 10, Three or four of the interior side surface 11, the outdoor side surface 12, the seating surface 13 and the ground surface 14 of the main body 10, the surface layer 20 3, or 4 of the outer surface of the main body 10 can be given a metal texture.

In addition, the surface layer 20 may further include a hairline emboss 21 as shown in FIG.

The hairline embossment 21 preferably has a thickness of 5 to 15 μm, a length of 0.1 to 100 mm, an average roughness (Ra) of 0.1 to 10 μm, and a line number per 1 cm of unit length of 20 to 350, A thickness of 5-10 mu m, a length of 0.1-10 mm, an average roughness (Ra) of 0.2-0.7 mu m, and a line number per 1 cm of unit length of 80-140.

If the thickness of the hair line emboss 21 is less than the above range, fine incontinence observed in the surface layer is not shown well, and it is difficult to realize a metal feel because the hair line effect is not clearly realized. If the thickness exceeds the above range, It is preferable to have a thickness in the above range since the similarity with incontinence, that is, the hairline is deteriorated and it is also difficult to realize a metallic feeling.

When the length of the hair line emboss 21 is out of the above range, it is difficult to realize the same texture as the hair line of the metal surface. It is preferable that the length is within the above range, more preferably the length of the hair line emboss 21 is 0.1 -10 mm, it is possible to obtain an effect that is most natural and has a beautiful appearance.

When the average roughness (Ra) is less than the above range, it is difficult to enjoy the effect of the beauty of the appearance due to irregular reflection of light. When the average roughness Ra is out of the above range, rough aesthetics are obtained, It is preferable that the average roughness is in the above range. More preferably, when the average roughness is in the range of 0.2 to 0.7 mu m, the most natural, smooth, and beautiful appearance effect can be obtained.

The number of lines per 1 cm of unit length is the number of lines of the hair-line embossing 21 passing through a line of 1 cm in parallel with the width direction of the profile. When the number of lines is less than the above range, It is preferable that the outer appearance is less than the above range, and if it exceeds the above range, the appearance of the appearance may be deteriorated due to an excessive number of players. More preferably, the number of lines per unit length of 1 cm is 80-140, and it is most natural and an effect of a beautiful appearance can be obtained.

There is no limitation on the method of forming the hair line embossment 21. For example, the hair line embossing may be performed on the surface layer 20 formed on the outer surface of the main body 10 through the emboss roll method, And the formed embossing roll (not shown) may be brought into contact with each other.

In the above description, it can be seen that the synthetic resin profile for a window to which a metal texture is applied according to the present invention is applied only to a window frame frame. However, as shown in FIG. 6, It goes without saying that the synthetic resin profile can also be applied to a window frame, and even when applied to a window frame, the effect of imparting the same metallic texture to that described above can be obtained through the surface layer.

The synthetic resin profile for a window provided with a metal texture according to the present invention may have an scratch resistance (ASTM D3363) of more than HB, and the upper limit of the scratch resistance may be 6H or less, 5H or less or 3H or less, The scratch resistance is excellent.

In addition, the synthetic resin profile for a window provided with the metal texture according to the present invention may have a flop index of more than 2 and its upper limit value is not limited, but may be, for example, 30 or less, 25 or less or 20 or less, There is an effect that the glossiness is excellent within the range and the metal texture is further superior.

The contact angle of the synthetic resin profile for a window provided with the metal texture according to the present invention may be more than 0 °, and the upper limit value thereof is not limited. For example, the synthetic angle profile may be 180 ° or less, 150 ° or 120 ° or less, , And the water repellency is excellent within the above range.

The synthetic resin profile for a window provided with the metal texture according to the present invention is provided with a metal texture by the surface layer formed on the outer surface of the body, and the gloss and the like are improved, so that a unique decoration So that the beauty of the appearance can be improved.

Further, in the synthetic resin profile for a window provided with a metal texture according to the present invention, when the surface layer for imparting a metal texture includes a hair line emboss, the metal texture is more emphasized by the hair line embossing, As a result, the beauty of the appearance can be improved.

As described above, the present invention is not limited to the above-described embodiments, and can be modified without departing from the gist of the present invention as claimed in the claims. And falls within the scope of protection of the invention.

[Example]

1. Preparation of synthetic resin profile surface layer and body composition for window frames

(1) The composition of Table 1 was kneaded to prepare a surface layer composition.

weight%	Example 1	Reference Example 1	Reference Example 2	Comparative Example 1
Acrylic resin (LG MMA, HI855H)	40	55	30	70
Fluororesin (3M, 6008/0001)	30	15	40	0
Impact Adjuster (KANEKA, MX-451)	25	25	25	25
Metal powder (ECKART, 08-20B)	One	One	One	One
pearl	One	One	One	One
Inorganic pigments	1.5	1.5	1.5	1.5
Other additives	1.5	1.5	1.5	1.5

- Comparative Example 2

1.5 parts by weight of pigment, 0.4 parts by weight of lubricant, 0.3 part by weight of stabilizer, 0.3 part by weight of antioxidant and 0.3 part by weight of ultraviolet ray inhibitor were kneaded with 100 parts by weight of conventional ASA resin to prepare a surface layer composition.

(2) 0.5 to 10 parts by weight of a processing aid, 5 to 15 parts by weight of an impact modifier, 2 to 10 parts by weight of pigment, 10 to 30 parts by weight of calcium carbonate, 0.5 to 10 parts by weight of a lubricant, 0.1 to 5 parts by weight of an ultraviolet ray inhibitor were kneaded to prepare a body composition.

2. For Window  Manufacture and manufacture of synthetic resin profiles For Window  Measurement of scratch resistance, gloss, water repellency and fluidity of synthetic resin profiles

The surface layer composition and the body composition of Example 1, Reference Example 1-2, and Comparative Example 1-2 prepared in 1 above were co-extruded to form a body and a surface layer formed on the outer surface of the body.

Then, the surface layer was brought into contact with an embossing roll having a hairline pattern to produce a synthetic resin profile for a window including a surface layer having a hairline pattern, and then its scratch resistance, gloss and water repellency were measured.

In addition, the fluidity of the surface layer composition was specified before coextrusion.

The results are shown in Table 2 below.

- Scratch resistance was measured according to ASTM D3363 by using a pencil hardness meter to measure the scratch hardness when the surface was pressed with a pencil lead .

- The degree of gloss was evaluated by visual evaluation of the aluminum orientation of the surface and the flap index using X-Rite.

- Water repellency was measured by dropping water on a window and contact angle with water using a contact angle meter of DAS-100 of ACMS.

The larger the contact angle, the better the water repellency.

- The fluidity was measured by using the MFI 452 of WANCE Co., Melt Index (220 캜, 10 kg) of the surface layer composition prepared in Table 1.

	Example 1	Reference Example 1	Reference Example 2	Comparative Example 1	Comparative Example 2
Scratch resistance	2H	HB	2H	Impossible to extrude	HB
Glossiness	11	9	11		2
Water repellency	90 °	60 °	90 °		0
Flowability [g / 10 min]	14-16	4 to 6	14-16	14-16

As shown in Table 2, the synthetic resin profile for window in Example 1 according to the present invention was excellent in metal texture and scratch resistance and scratch resistance by using a surface layer composition containing acrylic resin, fluororesin, impact modifier and metal powder. It was confirmed that the water repellency was excellent. On the other hand, in the case of Reference Example 1 which contains an excessive amount of acrylic resin compared with Example 1, it is found that the scratch resistance is lowered, and as the content of acrylic resin increases, The degree of gloss, water repellency and fluidity are deteriorated.

In addition, Reference Example 2 has similar physical properties as Example 1 according to the present invention, but it was confirmed that the fluorine resin is excessively used as compared with Example 1, and thus, it is not appropriate as the raw material value is increased.

On the other hand, in the case of Comparative Example 1 which did not contain a fluororesin, the fluidity of the surface layer composition was too low to extrude and the physical properties could not be measured.

Comparative Example 2 shows that the surface layer composition including the conventional ASA resin was co-extruded and that scratch resistance, gloss and water repellency were significantly lower than those of Example 1 according to the present invention.

3. Surface quality of window, long-term quality measurement

The surface quality and the long-term quality of the window and aluminum window manufactured using the synthetic resin profile (A) for a window provided with the metal texture according to the present invention were measured, and the results are shown in Table 3 below.

- Surface quality was visually confirmed by gloss and design.

- Long-term quality is a measure of stability, weatherability and stain resistance.

The restorability was measured by pressing a synthetic resin profile for a window with a pressure of 100 kg, after the occurrence of warpage.

The weathering resistance was measured in a QUV test apparatus for 6000 hours, after which the color change time was measured.

The contamination resistance was visually confirmed by dropping water on a synthetic resin profile for a window.

		Window of Example 1	Aluminum window
Surface quality	Polish	High gloss	Single color
	design	Micro hairline	Planar surface
Long-term quality	Stability	No warping	30mm warp occurred
	Weatherability	No change	1000 hours
	Stain resistance	Less contamination due to water-repellent coating effect	Surface contamination by water

As shown in Table 3, the window of Example 1 showed that the surface layer composition contained fluororesin and metal powder and had excellent gloss and fine design through the formation of micro hairline embossing while aluminum window was a single color In addition, the window of Example 1 had no change in color even after 6000 hours, and was excellent in weatherability and contamination due to the water-repellent coating effect including fluororesin. On the other hand, the aluminum window had weatherability and stain resistance As compared with Example 1 in accordance with the present invention.

[Description of Symbols]

10: main body 11: indoor side

12: outdoor side 13: seat face

14: ground plane 20: surface layer

21: hairline emboss A: synthetic resin profile for window

Claims (14)

1. (11), an outdoor side surface (12) exposed to the outdoor side, a seat (12) formed between the upper side of the indoor side surface (11) and the upper side of the outdoor side surface (12) A body (13), and a ground plane (14) formed between a lower portion of the interior side surface (11) and a lower portion of the outdoor side surface (12) and in contact with the floor;

   A surface layer formed on the outer surface of the main body 10 and formed by coextrusion and formed of a surface layer composition containing an acrylic resin (A), a fluororesin (B), an impact modifier (C), and a metal powder (D); A synthetic resin profile for a window provided with a metal texture.
2. The method according to claim 1,

   Wherein the body is formed from a body composition comprising PVC resin, processing aid, impact modifier, stabilizer, inorganic filler and lubricant.
3. The method according to claim 1,

   Wherein the acrylic resin (A) is a mixture of polymethyl methacrylate (a1) and rubber (a2).
4. The method of claim 3,

   Wherein the rubber (a2) is a core-shell rubber.
5. The method according to claim 1,

   Wherein the acrylic resin (A) is contained in the surface layer composition in an amount of 30 to 60 wt%.
6. The method according to claim 1,

   Wherein the fluororesin (B) is a polymer of vinylidene fluoride or a copolymer of vinylidene fluoride and hexafluoropropylene.
7. The method according to claim 1,

   Wherein the fluororesin (B) is contained in the surface layer composition in an amount of 15-45 wt%.
8. The method according to claim 1,

   Wherein the impact modifier (C) is contained in the surface layer composition in an amount of 15 to 40% by weight.
9. The method according to claim 1,

   Wherein the metal powder (D) is an aluminum flake.
10. The method according to claim 1,

    Wherein the metal powder (D) is contained in the surface layer composition in an amount of 0.5-5 wt%.
11. The method according to claim 1,

    Wherein the surface layer composition further comprises 0.5 to 3 wt% of pearl and pigment in the surface layer composition, respectively.
12. The method according to claim 1,

    Wherein the surface layer (20) is formed on at least one of the interior side surface (11), the exterior side surface (12), the seating surface (13) and the ground surface (14) of the body Synthetic resin profile for windows.
13. The method according to claim 1,

    Wherein the surface layer (20) comprises a hairline embossment (21).
14. 14. The method of claim 13,

    Wherein the hairline embossment 21 has a thickness of 5 to 15 占 퐉, a length of 0.1 to 100 mm, an average roughness (Ra) of 0.1 to 10 占 퐉, and a number of lines of 20 to 350 per 1 cm of unit length Resin profile for.

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