KR102502633B1 - Synthetic resin window profiles and the method maufacturing the same - Google Patents

Abstract

The present invention relates to a synthetic resin profile for windows and doors and a method for manufacturing the same, and more particularly, a transparent layer is formed on an embossed surface layer, so that contamination sources such as dust are less attached and the protective tape does not easily fall off, so it is manufactured over time. It relates to a synthetic resin profile for windows and doors capable of maintaining the appearance immediately after, and a manufacturing method thereof.

Description

Synthetic resin window profiles and the method maufacturing the same}

The present invention relates to a synthetic resin profile for windows and doors and a method for manufacturing the same, and more particularly, a transparent layer is formed on an embossed surface layer, so that contamination sources such as dust are less attached and the protective tape does not easily fall off, so it is manufactured over time. It relates to a synthetic resin profile for windows and doors capable of maintaining the appearance immediately after, and a manufacturing method thereof.

Various windows and doors are provided on the inside and outside of the building for the purpose of access control and lighting.

Such windows and doors may be classified into sliding type, casement type, or fixed type according to an opening and closing method, and double sliding windows form the main medium-to-large windows installed in living rooms and verandas of houses.

On the other hand, as the quality of life increases, aluminum windows and doors having a luxurious appearance and metallic texture have been manufactured using aluminum, but the manufacturing cost of the aluminum windows and doors is too expensive and the insulation performance is deteriorated.

Therefore, in order to solve this problem, the production of synthetic resin windows and doors formed of synthetic resin profiles such as polyvinyl chloride (PVC) resin is increasing.

Synthetic resin has a relatively low unit price and is formed relatively simply by the extrusion method, so synthetic resin windows formed from synthetic resin profiles can reduce manufacturing costs compared to aluminum windows and doors, and mass production is smooth, and the material itself has high thermal conductivity. Due to low characteristics and relatively close coupling of each part, insulation performance can be improved compared to aluminum windows.

The synthetic resin profile is, for example, a body formed of a PVC resin composition through co-extrusion using equipment as disclosed in Korean Patent Publication No. 10-2012-0139159 (published date: 2012. 12. 27.), etc.; A surface layer formed of an acrylic-styrene-acrylonitrile (ASA) resin composition may be included on the outer side of one surface of the main body, and then, an embossed roll formed on the upper surface layer is brought into contact to have an embossing. It can be.

However, as the exposure time increases as the embossing is applied to the outermost part of the profile, contaminants such as dust are attached to the embossing, resulting in a deterioration in the appearance of the profile.

In addition, when supplying the profile to a processing agency, a protective tape was attached to the upper part of the embossing to prevent scratches by the operator, but the protective tape often fell off due to the embossing, so scratch prevention was insignificant.

KR 10-2012-0139159 A (published date: 2012. 12. 27.)

The present invention has been made to solve the above problems, and a synthetic resin profile for windows and doors that is less likely to adhere to contaminants such as dust and does not easily fall off the protective tape to maintain the appearance immediately after manufacture over time and a manufacturing method thereof. intended to provide

In order to achieve the above object, the present invention

main body;

A surface layer formed on at least one surface of the main body and including embossing; and

It provides a synthetic resin profile for windows and doors comprising a; transparent layer formed on the surface layer.

In addition, the present invention

preparing a body composition, a surface layer composition, and a transparent layer composition, respectively; and

Forming a body, a surface layer including an emboss on at least one surface of the body, and a transparent layer on the surface layer using the body composition, the surface layer composition, and the transparent layer composition; Provides a method for manufacturing a synthetic resin profile for windows and doors including .

The synthetic resin profile for windows and doors of the present invention has an effect of being able to maintain the appearance immediately after manufacture even over time because contamination sources such as dust are less attached and the protective tape is not easily removed.

In addition, the synthetic resin profile for windows and doors of the present invention includes a transparent layer on the embossed surface layer, and thus has an effect of having a more excellent sense of depth and three-dimensional texture.

1 is an exemplary view showing an example in which a surface layer and a transparent layer are formed on one surface of a body in one embodiment of a synthetic resin profile for windows and doors according to the present invention.
2 is an exemplary view showing an example in which a surface layer and a transparent layer are formed on two surfaces of a body in one embodiment of a synthetic resin profile for windows and doors according to the present invention.
3 is a perspective view showing an embodiment of a multi-coextrusion mold for manufacturing a synthetic resin profile for windows and doors according to the present invention.
4 is a perspective view showing the main part of another embodiment of the synthetic resin profile for windows and doors according to the present invention.
5 is an exemplary view showing a schematic example of a manufacturing process of the synthetic resin profile for windows and doors.
FIG. 6 is a detailed view of part 'A' of FIG. 5 .
7 is a perspective view showing an embodiment of an embossed pattern formed on the entrance of a second mold according to the present invention.
8 is a detailed view of part 'B' of FIG. 5;

Hereinafter, the present invention will be described in detail based on the accompanying drawings.

Referring to Figure 1, the present invention the body 10;

A surface layer 20 formed on at least one surface of the main body 10 and including embossing 21; and

It relates to a synthetic resin profile (A) for windows and doors including a transparent layer (30) formed on the surface layer (20).

Specifically, the synthetic resin profile (A) for windows and doors of the present invention includes the body 10; A surface layer 20 including embossing 21; And a transparent layer 30; formed by triple co-extrusion to further include a transparent layer 30 on the surface layer on which the embossing 21 is formed, so that contaminants such as dust do not adhere to the embossing, and the protective tape It does not fall off well, and there is an effect of maintaining the appearance immediately after manufacture even over time.

Hereinafter, the structure constituting the profile will be described in detail.

body(10)

The main body 10 of the present invention is formed between an indoor side surface 11 exposed to the indoor side, an outdoor side surface 12 exposed to the outdoor side, and an upper portion of the indoor side surface 11 and an upper portion of the outdoor side surface 12, for example. However, it may include a seating surface 13 on which the glass or window frame is seated and a ground surface 14 formed between the lower part of the indoor side surface 11 and the lower part of the outdoor side surface 12 and facing the floor. (See FIGS. 1 and 2).

In addition, the main body 10 is formed of windows in the same way as the main body of the general synthetic resin profile for windows and doors, and forms a rectangular window frame by mutual welding.

1 and 2 show an example of a synthetic resin profile for windows constituting a window frame among sliding windows, but is not limited thereto, and is applicable to a window frame, and constitutes a casement or fixed window that is a window of other opening and closing methods. It is obvious to those skilled in the art that it can be applied to the synthetic resin profile for windows and doors without limitation and the shape of the main body may be different accordingly.

The body 10 may be formed of a body composition including, for example, a PVC resin, a processing aid, an impact modifier, and an inorganic filler.

The body composition may optionally further include one or more additives selected from the group consisting of a pigment, an antioxidant, an ultraviolet inhibitor, and a lubricant, but the type and content thereof are not limited.

Specifically, in the present invention, as a specific embodiment of the body composition, 0.1-15 parts by weight or 0.5-10 parts by weight of a processing aid, 1-20 parts by weight or 5-15 parts by weight of an impact modifier, based on 100 parts by weight of PVC resin, 5-50 parts by weight or 10-30 parts by weight of an inorganic filler, 1-15 parts by weight or 2-10 parts by weight of a pigment, and 0.1-15 parts by weight or 0.5-10 parts by weight of a lubricant.

In addition, the thickness of the body 10 of the present invention may be 1.5-5.0mm or 2.0-4.5mm, and within the above range, there is an effect of imparting excellent durability to the synthetic resin profile for windows and doors.

surface layer (20)

The surface layer 20 of the present invention is formed on at least one surface of the main body 10, and may be formed of a surface layer composition containing, for example, an acrylic-styrene-acrylonitrile (ASA) resin.

The ASA resin is an acrylic graft polymer obtained by graft polymerization of a vinyl cyan compound and an aromatic vinyl compound on an acrylic synthetic rubber by an emulsion graft polymerization method, and a vinyl cyan-aromatic vinyl copolymer obtained by copolymerization of a vinyl cyan compound and an aromatic vinyl compound. It can be prepared by mixing and extruding.

At this time, by adjusting the physical properties and content of the acrylic synthetic rubber, the acrylic graft polymer, and the vinyl cyan-aromatic vinyl copolymer used as the matrix polymer, and selectively adding a reinforcing agent having a specific role, an ASA resin with desired physical properties can be obtained. there is.

As the vinyl cyan-aromatic vinyl copolymer, in one embodiment, a styrene-acrylonitrile copolymer having excellent heat resistance may be used.

Other ASA resin manufacturing methods may use various conventionally known manufacturing methods, so detailed descriptions thereof will be omitted.

The ASA resin used in the present invention is, in one embodiment, 40-60% by weight or 45-55% by weight of an ASA resin with excellent weather resistance and gloss (for example, LI980G, LG Chem) and an ASA resin with excellent weather resistance and scratch resistance. (For example, LG Chem, LI970) It may be a mixed ASA resin mixed with 40-60% by weight or 45-55% by weight. In this case, the weather resistance, glossiness and scratch resistance of the synthetic resin profile (A) for windows and doors It has an excellent effect.

In addition, the surface layer composition may further include a metal powder to give a metal effect to the profile.

The metal powder may use, for example, aluminum flakes implementing a metal texture similar to that of a metal surface, but is not limited thereto.

The metal powder may be used in an amount of 0.5-2 parts by weight or 0.5-1.5 parts by weight based on 100 parts by weight of the mixed ASA resin, and within the above range, co-extrusion processability is excellent, and the adhesion of the surface layer composition to the outer surface of the main body is excellent. This has an excellent effect.

Alternatively, the surface layer 20 of the present invention may be formed using a surface layer composition including, for example, an acrylic resin (a), a fluororesin (b), an impact modifier (c), and a metal powder (d).

The acrylic resin (a) is for increasing colorability and gloss, and a mixture of polymethyl methacrylate (a1) and rubber (a2) may be used.

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

The acrylic monomer may be an alkyl acrylate monomer or an alkyl methacrylate monomer or a mixture of an alkyl acrylate monomer and an alkyl methacrylate monomer.

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

The alkyl methacrylate monomers include ethyl methacrylate, n-propyl methacrylate, isopropyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, sec-butyl methacrylate, excluding methyl methacrylate. Rate, tert-butyl methacrylate, amyl methacrylate, isoamyl methacrylate, n-hexyl methacrylate, cyclohexyl methacrylate, 2-ethylhexyl methacrylate, pentadecyl methacrylate, dodecyl 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 may be used.

In a specific embodiment, the polymethyl methacrylate may be a copolymer of methyl methacrylate and methyl acrylate.

The weight average molecular weight (Mw) of the polymethyl methacrylate (a1) may be 60,000-150,000 or 70,000-130,000, and within the above range, impact strength and processability are excellent.

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

The core-shell rubber generally has a shape in which a core containing an elastomeric or rubbery polymeric material is surrounded by a shell containing a non-elastomeric polymeric material.

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

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

The content of at least one monomer selected from the group consisting of the diene monomer and the acrylic monomer may be included in the core polymer at 50-85% by weight or 55-80% by weight, and the core-shell rubber of an appropriate value within the above range. There is an effect that can have a glass transition temperature of.

The core polymer includes at least one vinyl monomer selected from the group consisting of styrene, α-methylstyrene, vinyl naphthalene, acrylonitrile, and methacrylonitrile copolymerizable with the diene monomer and the acrylic monomer to control the glass transition temperature. can include more.

The vinyl monomer may be included in an amount of 15 to 50% by weight or 20 to 45% by weight in the core polymer, and has an effect of having a glass transition temperature of the core-shell rubber of an appropriate value within the above range.

A crosslinking agent may be used to adjust the degree of crosslinking when preparing the core polymer, and the crosslinking agent may include, for example, divinylbenzene, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, It may be one or more compounds selected from the group consisting of 1,3-butylene glycol dimethacrylate, aryl methacrylate, and 1,3-butylene glycol diacrylate.

The crosslinking agent may be used in an amount of 1 to 5% by weight or 1 to 3% by weight in the core polymer, and within the above range, the product has excellent physical properties while having a role as a rubber.

The shell of the core-shell rubber is highly compatible with the polymethyl methacrylate, for example, methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, butyl acrylate, butyl methacrylate , 2-ethylhexyl acrylate, styrene, α-methylstyrene, acrylonitrile, and methacrylonitrile may be used.

The rubber (a2) may have an average particle size of 50-300 nm or 50-250 nm, and excellent impact strength, scratch resistance, gloss and permeability within the above range are obtained.

In addition, the glass transition temperature of the rubber (a2) is -60 ° C to 0 ° C, or -40 ° C to -20 ° C, and the use effect of the rubber is excellent when used in the winter season within the above range, so that the product properties are excellent, It has excellent processability.

The acrylic resin (a) may have a light transmittance of 75-95% or 80-95%, and has an effect of imparting excellent colorability and gloss to the surface layer 20 within the above range.

The light transmittance can be measured using a haze meter (Nippon Denshoku Co., Ltd., NDH-7000).

In addition, the acrylic resin (a) may have a melt flow index (MFI) of 1-10 g / 10 min (230 ° C, 3.8 kg) or 2-8 g / 10 min (230 ° C, 3.8 kg), within the above range In addition to excellent co-extrusion processability, there is an effect that the surface layer composition can be well coated on one surface of the body.

In addition, the acrylic resin (a) may be included in 35-50% by weight or 35-45% by weight in the surface layer composition, and within the above range, co-extrusion processability is excellent, as well as scratch resistance, glossiness, and It has excellent water repellency.

The fluororesin (b) is for imparting excellent scratch resistance, glossiness, water repellency and processability to the synthetic resin profile for windows and doors, and is a polymer of vinylidene fluoride or a copolymer of vinylidene fluoride and hexafluoropropylene having excellent weather resistance. may be synthetic.

In addition, the fluororesin (b) may have a melt flow index of 1-20g/10min (230°C, 2.16kg) or 2-15g/10min (230°C, 2.16kg), and coextrusion processability within the above range. This has an excellent effect.

In addition, the fluororesin (b) may be included in an amount of 20-35% by weight or 25-35% by weight in the surface layer composition, and the scratch resistance, glossiness, and water repellency of the profile while maintaining an appropriate cost within the above range This has an excellent effect.

The impact modifier (c) is for reinforcing the impact strength of the surface layer 20 and may be in the form of phase-separated particles in which the rubber (c1) is evenly dispersed in the epoxy resin (c2). Since the rubber (c1) is the same as the rubber (a2) described above, its description is omitted.

The rubber (c1) may be dispersed in an amount of 10-40% by weight or 15-30% by weight in the epoxy resin (c2), and within the above range, the rubber (c1) has an excellent effect as an impact modifier.

The epoxy resin (c2) is capable of dispersing the rubber (c1), for example, 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-bis(hydroxymethyl ) Benzene, 1,3-bis (hydroxymethyl) benzene, 1,4-bis (hydroxymethyl) benzene, 1,4-bis (hydroxymethyl) cyclohexane, 1,3-bis (hydroxymethyl) Diglycidyl ether of cyclohexane, diglycidyl ether of cyclohexanedimethanol, diglycidyl ether of hexahydrophthalic acid, cyclooctene diepoxide, divinylbenzene diepoxide, 1,7-octadiene diepoxide , 1,3-butadiene diepoxide, 1,5-hexadiene diepoxide, diepoxide of 4-cyclohexenecarboxylate 4-cyclohexenylmethyl ester, phenol novolac, cresol novolac, bisphenol A novolac It may be at least one selected from the group consisting of glycidyl ether derivatives, triglycidyl paraamine phenol, and tetraglycidyl methylenedianiline.

The impact modifier (c) may be, for example, a core-shell styrene-butadiene rubber (SBR) evenly dispersed in a matrix of triglycidyl paraaminephenol epoxy.

In addition, the impact modifier (c) may be included in an amount of 15-35% by weight or 20-30% by weight in the surface layer composition, and provides excellent impact strength and tensile elongation to the surface layer 20 within the above range. The glossiness of the profile has an excellent effect.

Since the metal powder (d) is the same as described above, redundant description will be omitted.

The metal powder (d) may be included in an amount of 0.5-2% by weight or 0.5-1.5% by weight in the surface layer composition, and within the above range, co-extrusion processability is excellent, and the adhesion of the surface layer composition to the outer surface of the body is excellent. It has an excellent effect.

Optionally, the surface layer composition may further include pearls and/or pigments in an amount of 0.5 to 2% by weight, respectively.

The pearl, together with the metal powder (d), imparts a luxurious and subtle feel to the synthetic resin profile for windows and doors, and may be included in an amount of 0.5 to 2% by weight or 0.5 to 1.5% by weight in the surface layer composition. There is an effect that can realize this luxurious and subtle feeling.

The pigment is for imparting a color to the surface layer 20, and it is preferable to use an inorganic pigment having excellent weather resistance and chemical resistance. The inorganic pigment may be included in an amount of 0.5 to 2% by weight or 0.5 to 1.5% by weight in the surface layer composition, and within the above range, there is an effect of imparting excellent colorability, color uniformity, and processability.

Optionally, the surface layer composition may further include at least one other additive selected from the group consisting of a lubricant, an antioxidant, an ultraviolet stabilizer, a heat resistant agent, a flame retardant, a heat stabilizer, and an antistatic agent. As the other additives, since conventional types used in the art may be used, the type and content are not particularly limited in the present invention.

In addition, the surface layer 20 of the present invention may include embossing (21).

The embossing 21 of the present invention may be a hairline embossing similar to incontinence of a metal surface.

Specifically, the hairline embossing preferably has a thickness of 5-15 μm, a length of 0.1-100 mm, an average roughness (Ra) of 0.1-10 μm, and a number of lines per unit length of 1 cm of 20-350, more preferably It is preferable that the thickness is 5-10㎛, the length is 0.1-10mm, the average roughness (Ra) is 0.2-0.7㎛, and the number of lines per unit length 1cm is 80-140.

When the thickness of the embossing 21 is less than the above range, it is difficult to realize a metallic feeling because the fine incontinence observed in the surface layer 20 does not appear clearly, and the hairline effect is not clearly implemented. Since the similarity with incontinence, that is, the hairline is lowered, it is also difficult to implement a metallic feel, so it is preferable to have a thickness within the above range.

If the length of the embossing 21 is outside the above range, it is difficult to implement a hairline-like texture on the metal surface, so it is preferable that the embossing 21 has a length within the above range, and more preferably, when the length of the embossing 21 is 0.1-10mm. You can get the most natural and beautiful effect.

In addition, when the average roughness (Ra) is less than the above range, it is difficult to enjoy the effect of beautiful appearance due to diffuse reflection of light, and when it exceeds the above range, a rough aesthetic feeling is derived, so that the surface is smooth and natural, such as a hairline on a metal surface. Since it is difficult to implement a feeling, it is preferable that the average roughness is within the above range. More preferably, when the average roughness is 0.2-0.7 μm, the most natural, smooth, and beautiful appearance can be obtained.

The thickness of the surface layer 20 of the present invention may be 0.3-0.7mm or 0.4-0.6mm, and within this range, color implementation and excellent glossiness can be imparted, so that the appearance of the synthetic resin profile for windows and doors is excellent, There is an effect that can have excellent scratch resistance.

The surface layer 20 as described above may be formed on at least one surface of the main body 10 .

For example, as shown in FIG. 1, the surface layer 20 may be formed on the indoor side surface 11 of the body 10, and as shown in FIG. 2, the surface layer 20 may be formed on the body 10. It may be formed on the indoor side surface 11 and the outdoor side surface 12 (ie, two surfaces) of (10).

As described above, FIGS. 1 and 2 show an example of a synthetic resin profile for windows and doors constituting a window frame among sliding windows, but is not limited thereto, and is applicable to window frames, and is a casement type window of other opening and closing methods. Alternatively, it is obvious to those skilled in the art that it can be applied without limitation to synthetic resin profiles for windows and doors constituting fixed windows and doors, and accordingly, the shape of the main body may be different.

Transparent layer (30)

The transparent layer 30 of the present invention serves to protect the emboss 21 of the surface layer 20 formed on the lower side and to give an excellent appearance to the synthetic resin profile A for windows and doors, acrylic resin, impact modifier, It may be formed of a transparent layer composition including metal powder and pearl.

Since the acrylic resin, impact modifier, metal powder, and pearl are the same as the acrylic resin, impact modifier, metal powder, and pearl included in the surface layer 20 described above, duplicate descriptions are omitted.

The acrylic resin may be included in an amount of 40-70% by weight or 45-65% by weight in the transparent layer composition. If it is less than the above range, the glossiness of the transparent layer may be insignificant, and if it exceeds the above range, since the tensile strength of the synthetic resin profile for windows and doors is lowered, it may be included within the above range.

The impact modifier may be included in an amount of 25-45% by weight or 30-40% by weight in the transparent layer composition. If it is less than the above range, the impact strength is lowered, and if it exceeds the above range, the raw material value increases, and the tensile elongation and gloss improvement effect of the transparent layer during extrusion are insignificant, so it is preferable to use it within the above range.

The metal powder and pearl may be included in an amount of 0.5-3% by weight or 1-2% by weight in the transparent layer composition, respectively. If the amount is less than the above range, the synthetic resin profile (A) for windows and doors cannot have an excellent appearance, and it exceeds the above range In the case of doing so, compatibility with the acrylic resin is lowered and may remain in the mold, whereby mass productivity is lowered and adhesion of the transparent layer composition on the surface layer 20 is lowered, so it may be included within the above range.

The transparent layer composition may further include other additives, and since the other additives are the same as the other additives included in the surface layer 20 described above, overlapping descriptions are omitted.

The thickness of the transparent layer 30 of the present invention may be 0.9-1.8mm or 1-1.5mm, and protects the embossed layer 21 formed on the lower surface layer 20 within the above range, and is a synthetic resin for windows and doors. There is an effect of imparting an excellent appearance to the profile (A).

In addition, the light transmittance of the transparent layer 30 of the present invention may be 80-95% or 85-95%, and has excellent transparency within the above range, so that the depth of the profile and the three-dimensional texture are more excellent.

The light transmittance may be measured using a haze meter (Nippon Denshoku Co., NDH-7000) of the transparent film, which is the transparent layer 30.

The synthetic resin profile for windows and doors of the present invention can attach the protective tape to the transparent layer instead of embossing, thereby preventing the protective tape from falling off due to embossing, thereby preventing the operator from being scratched.

In addition, the synthetic resin profile for windows and doors of the present invention further includes a transparent layer on the surface layer on which the embossing is formed, so that a sense of depth and a three-dimensional texture are more excellent.

In addition, the synthetic resin profile (A) for windows and doors may have scratch resistance (ASTM D3363) of greater than 2H or greater than 3H, and excellent scratch resistance within the above range is obtained. In addition, the upper limit thereof is not limited, but may be, for example, 7H or less or 6H or less.

The scratch resistance may be measured according to ASTM D3363 by using a pencil hardness tester to measure scratch hardness when the surface is drawn by pressing a pencil lead.

In addition, the synthetic resin profile (A) for windows and doors of the present invention may have weather resistance (ΔE) of less than 5 or 4.5 or less, and excellent weather resistance within the above range is obtained. In addition, the lower limit thereof is not limited, but may be, for example, 0 or 1 or more.

In accordance with KS F 2274 (Xenon arc), the degree of discoloration (ΔE) can be measured after 6000 hours of testing using Atlas ci-4000 (Weather-O-Meter).

At this time, the irradiation intensity was 0.51 W/m ² at 340 nm, the black panel temperature was 63° C., and the sample chamber temperature was 38° C.

In addition, the synthetic resin profile (A) for windows and doors may have a flop index of 7 or more or 9 or more, and has excellent gloss within the above range, so that the metal texture is more excellent. In addition, the upper limit thereof is not limited, but may be, for example, 25 or less or 20 or less.

The flop index can measure the degree of aluminum orientation on the surface of the synthetic resin profile for windows and doors using visual evaluation and X-Rite.

In addition, the synthetic resin profile (A) for windows and doors may have a water contact angle of 50 ° or more or 70 ° or more, and excellent water repellency is effective within the above range. In addition, the upper limit thereof is not limited, but may be, for example, 180° or less or 150° or less.

The contact angle with respect to water can be measured by dropping water on the surface of the synthetic resin profile for windows and doors using ACMS's DAS-100 (contact angle measuring instrument).

In addition, the present invention comprises the steps of preparing a body composition, a surface layer composition, and a transparent layer composition, respectively (S1); and

A method for manufacturing a synthetic resin profile for windows and doors comprising forming a main body, a surface layer including embossing on at least one surface of the main body, and a transparent layer on the surface layer using the main body composition, the surface layer composition, and the transparent layer composition (S3). It is about.

Hereinafter, each step will be described in detail.

The step (S1) may be a step of preparing a body composition, a surface layer composition, and a transparent layer composition by kneading the body composition, the surface layer composition, and the transparent layer composition, respectively.

Since the composition of the main body, the composition of the surface layer, and the composition of the transparent layer are the same as the compositions of the main body, the surface layer, and the transparent layer described above, duplicate descriptions are omitted.

Kneading of the body composition, the surface layer composition, and the transparent layer composition may be performed at 25-35° C., for example.

In addition, in the step (S3), the body composition, the surface layer composition, and the transparent layer composition prepared above are triplely co-extruded to form a body, a surface layer including embossing on at least one surface of the body, and windows and doors having a transparent layer formed on the surface layer. It may be a step of preparing a synthetic resin profile for use.

Specifically, the body composition, the surface layer composition and the transparent layer composition may be extruded at a temperature of 150-190 ° C or 160-180 ° C and 5-20 rpm or 10-15 rpm, for example, There is an effect of excellent co-extrusion workability within the above temperature and shear rate ranges.

Specifically, in the present invention, as the transparent layer is formed on the surface layer on which the embossing is formed, the embossing is applied to the surface layer located below the transparent layer rather than the outermost part of the profile, so that contamination sources such as dust are less attached and the protective tape is not easily removed. Even over time, the appearance immediately after manufacture can be maintained, and the sense of depth and three-dimensional texture are more excellent.

More specifically, the main body; At least one surface of the main body, a surface layer including embossing; And a transparent layer on the surface layer; as an embodiment of a mold for manufacturing a synthetic resin profile for windows and doors formed thereon, a multi-coextrusion mold in which a plurality of molds are integrally combined may be applied.

3 is a perspective view showing an embodiment of a multi-coextrusion mold 120, and FIG. 4 is a perspective view showing main parts of another embodiment of a synthetic resin profile for windows and doors according to the present invention.

Referring to FIGS. 3 and 4 in more detail, the profile manufacturing apparatus 100 is injected with a body composition including PVC resin through the main extrusion unit 110. Then, the body composition introduced by the heating means in the main extrusion unit 110 is melted and then transported forward. The transported main body composition is extruded into a synthetic resin profile (A) for windows and doors having a predetermined shape through the multi-coextrusion mold 120 provided in front thereof.

The multi-coextrusion mold 120 includes a plurality of molds, that is, a first mold 120a, a second mold 120b, and a third mold 120c through which entrances 121 in the shape of synthetic resin profiles for windows and doors of a predetermined shape are formed. ).

5 is a schematic diagram showing a manufacturing process of the synthetic resin profile A for windows and doors. Referring to FIGS. will go through At this time, one side of the second mold 120b is connected to a raw material supply passage (not shown) for supplying the surface layer composition from the first auxiliary extrusion part (not shown) so that the surface layer 20 is integrally formed on at least one surface of the main body 10. to be formed as

FIG. 6 is a detailed view of part 'A' of FIG. 5, and FIG. 7 is an exemplary view showing the embossing 121a formed on at least one surface of the inner circumferential surface of the second mold 120b.

As shown in FIG. 6 , the surface layer 20 formed on at least one surface of the main body 10 may include embossing 21 .

In this case, as shown in FIG. 7, since the embossing 121a is formed on at least one surface of the inner circumferential surface of the second mold 120b, the surface layer 20 is extruded on the main body 10 and at the same time the surface layer 20 Embossing 21 can be formed on the surface of. In the drawing, the shape of the embossing 21 is shown to be formed in an irregular shape, but is not limited thereto, and may be formed in various shapes such as a semicircular shape or a protruding shape.

8 is a detailed view of the 'B' portion of FIG. 5. Referring to FIGS. 5 and 8, the main body 10 having the surface layer 20 including the embossing 21 is passed through the third mold 120c. do. At this time, one side of the third mold 120c is connected to a raw material supply passage (not shown) for supplying the transparent layer composition supplied from the second auxiliary extrusion part (not shown), and the emboss formed on at least one surface of the main body 10 ( 21) so that the transparent layer 30 is integrally formed on the surface of the surface layer 20 including. Accordingly, the embossing 21 formed on the surface layer 20 is protected, and an excellent appearance is imparted to the synthetic resin profile A for windows and doors.

Finally, the extruded synthetic resin profile (A) for windows and doors is cooled while sequentially passing through a known calibrator (not shown) and a cooling unit from the third mold (120c) so that the profile can maintain the outer surface shape. Since the calibrator and the cooling unit may be equivalent to those of known extrusion equipment, a detailed description thereof will be omitted.

Since the present invention as described above is not limited to the above-described embodiments, it can be modified within the scope not departing from the gist of the present invention claimed in the claims, and such changes are defined by the description of the claims below. fall within the protection scope of the invention.

[Example]

1. Composition Preparation

(Example 1)

(1) Manufacture of body composition

Based on 100 parts by weight of PVC, processing aid 0.5-10 parts by weight, impact modifier 5-15 parts by weight, pigment 2-10 parts by weight, calcium carbonate 10-30 parts by weight, lubricant 0.5-10 parts by weight, antioxidant 0.1-5 A body composition was prepared by kneading parts by weight and 0.1-5 parts by weight of a sunscreen at 30°C.

(2) Preparation of surface layer composition

1.01 parts by weight of metal powder was kneaded at 30° C. with respect to 100 parts by weight of ASA resin mixed with 50% by weight of ASA resin (LG Chem, LI970) and 50% by weight of ASA resin (LG Chem, LI980G) to obtain a surface layer composition. manufactured.

(3) Preparation of transparent layer composition

60% by weight of acrylic resin, 35% by weight of impact modifier, 1.5% by weight of metal powder, 1.5% by weight of pearl, 0.4% by weight of lubricant, 0.6% by weight of antioxidant, and 1% by weight of heat stabilizer were kneaded at 30 ° C to prepare a transparent layer composition did

(Example 2)

(1), (3): It was prepared in the same way as in Example 1.

(2) Preparation of surface layer composition

Acrylic resin (LG MMA, HI855H) 40% by weight, fluorine resin (3M, 6008/0001) 30% by weight, impact modifier (KANEKA, MX-451) 25% by weight, metal powder (ECKART, 08-20B) 1.0% by weight of pearl, 1.0% by weight of pearl, 1.5% by weight of inorganic pigment, 0.5% by weight of lubricant, 0.5% by weight of antioxidant, and 0.5% by weight of heat stabilizer were kneaded at 30° C. to prepare a surface layer composition.

(Comparative Example 1)

(1): It was prepared in the same way as in Example 1.

(2) Preparation of surface layer composition

A surface layer composition was prepared by kneading 100% by weight of ASA resin (LG Chem, LI968W) at 30°C.

2. Manufacture of synthetic resin profiles for windows and doors

(Example 1)

The main body composition, surface layer composition, and transparent layer composition of Example 1 prepared above were triple co-extruded using a multiple co-extrusion mold 120 as shown in FIGS. 3 and 7 under conditions of 160-180 ° C. and 10-15 rpm. main body; At least one surface of the main body, a surface layer including embossing; And a transparent layer on the surface layer; a synthetic resin profile for windows and doors formed thereon was prepared.

At this time, the thickness of the main body is 2.8mm, the thickness of the surface layer is 0.5mm, and the thickness of the transparent layer is 1.2mm.

(Example 2)

A synthetic resin profile for windows and doors was prepared in the same manner as in Example 1, except that the body composition, surface layer composition, and transparent layer composition of Example 2 prepared above were used.

At this time, the thickness of the main body is 2.8mm, the thickness of the surface layer is 0.5mm, and the thickness of the transparent layer is 1.2mm.

(Comparative Example 1)

The body composition and the surface layer composition of Comparative Example 1 prepared above were subjected to double co-extrusion under conditions of 160-180° C. and 10-15 rpm to obtain a main body; And a surface layer on the outer surface of the main body; was formed.

Subsequently, a synthetic resin profile for windows and doors including an embossed surface layer was prepared by contacting the surface layer with an embossed embossed roll.

At this time, the thickness of the main body is 2.8mm, and the thickness of the surface layer is 0.5mm.

[Experimental example]

1. Measurement of physical properties of synthetic resin profiles for windows and doors

The scratch resistance, weather resistance, gloss and water repellency of the synthetic resin profiles for windows and doors prepared in Examples 1 and 2 and Comparative Example 1 were measured and are shown in Table 1 below.

(1) Scratch resistance: In accordance with ASTM D3363, scratch hardness was measured when the surface was pressed and drawn with a pencil lead using a pencil hardness tester.

(2) Weather resistance: After 6000 hours of testing in accordance with KS F 2274 (Xenon arc) using Atlas' ci-4000 (Weather-O-Meter), the degree of discoloration (ΔE) was measured.

At this time, the irradiation intensity was 0.51 W/m ² at 340 nm, the black panel temperature was 63° C., and the sample chamber temperature was 38° C.

(3) Gloss (flop index): The degree of aluminum orientation on the surface of the synthetic resin profile for windows and doors was visually evaluated and the flop index was measured using X-Rite.

(4) Water repellency: Water was dropped on the surface of the synthetic resin profile for windows and doors, and the contact angle with respect to water was measured using ACMS's DAS-100 (contact angle measuring instrument).

Example 1 Example 2 Comparative Example 1 With/without transparent layer ○ ○ X scratch resistance 4H 4H 2H Weather resistance (ΔE) 3 4 5 Glossiness 12 14 4-6 Water repellency (°) 90 90 40

As confirmed in Table 1, the synthetic resin profiles for windows and doors of Examples 1 and 2 according to the present invention further include a transparent layer at the outermost part, so that they have excellent scratch resistance, weather resistance and water repellency, and excellent glossiness, so that their appearance is good. I could see that it was very beautiful.

On the other hand, the synthetic resin profile for windows of Comparative Example 1, which does not include a transparent layer and uses ASA resin without gloss on the surface layer, has lower scratch resistance, weather resistance, water repellency, and gloss compared to Examples 1 and 2, especially As the glossiness was very low, it was confirmed that the appearance was not excellent.

2. Measurement of contamination of synthetic resin profiles for windows and doors

The degree of contamination of the synthetic resin profiles for windows and doors of Examples 1 to 2 and Comparative Example 1 prepared above was visually measured over time (1 month) and is shown in Table 2 below.

○: Even if time passes, contamination sources such as dust do not adhere, and the appearance is excellent.

X: Over time, contamination sources such as dust adhered and the appearance deteriorated.

Example 1 Example 2 Comparative Example 1 degree of pollution prevention ○ ○ X

As confirmed in Table 2, since the synthetic resin profiles for windows and doors of Examples 1 to 2 according to the present invention include a transparent layer at the outermost part, embossing is applied on the surface layer located below the transparent layer, not the outermost part of the profile. It was confirmed that the external appearance was excellent because no contamination sources such as dust were attached even after time.

On the other hand, since the synthetic resin profile for windows and doors of Comparative Example 1 did not include a transparent layer, embossing was applied to the outermost part of the profile, and as time passed, it was confirmed that contamination sources such as dust were attached and the appearance deteriorated.

10: main body 11: indoor side
12: outdoor side 13: seating surface
14: ground plane 20: surface layer
21: embo 30: transparent layer
A: Synthetic resin profile for windows and doors
100: profile manufacturing device
110: main extrusion part 120: multi-coextrusion mold
120a: first mold 120b: second mold
130c: third mold 121: entrance
121a: Embo

Claims (16)

delete delete delete delete delete delete delete delete delete delete delete preparing a body composition, a surface layer composition, and a transparent layer composition, respectively (S1); and
Forming a body, a surface layer including an emboss on at least one surface of the body, and a transparent layer on the surface layer by triple co-extrusion using the body composition, the surface layer composition, and the transparent layer composition (S3); Including,
The embossing is formed using a mold in which embossing is formed on at least one surface of the inner circumferential surface, a method of manufacturing a synthetic resin profile for windows. According to claim 12,
The body composition includes 0.5-10 parts by weight of a processing aid, 5-15 parts by weight of an impact modifier, 10-30 parts by weight of an inorganic filler, 2-10 parts by weight of a pigment, and 0.5-10 parts by weight of a lubricant based on 100 parts by weight of the PVC resin. A method of manufacturing a synthetic resin profile for windows and doors. According to claim 12,
The transparent layer composition comprises 40-70% by weight of acrylic resin, 25-45% by weight of impact modifier, 0.5-3% by weight of metal powder, and 0.5-3% by weight of pearl. delete delete

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