KR102287502B1 - Film fabric for blinds and manufacturing method thereof - Google Patents

Abstract

A film fabric for blinds according to the present invention includes: a first polyester film layer having a metal film layer deposited to reflect sunlight; a transparent second polyester film layer laminated on an outdoor side around the first polyester film layer; and an adhesive layer that is provided between the first polyester film layer and the second polyester film layer to bond the first polyester film layer and the second polyester film layer to each other.

Description

Film fabric for blinds and manufacturing method thereof

The present invention relates to a film fabric for blinds and a manufacturing method thereof, and more particularly, to a film fabric for blinds that can prevent glare from the sun and can reduce solar energy flowing into a room, thereby reducing building energy. and to a method for manufacturing the same.

Recently, there are many buildings with a curtain wall structure with a beautiful appearance in commercial buildings and the like. The curtain wall structure has the advantage of having a light weight and a beautiful appearance, but has a disadvantage in that heat loss is high because glass is used a lot. In a building, windows are the most thermally vulnerable part, and in particular, an increase in glass area has a greater impact on building energy consumption.

In Korea, as a part of reducing building energy consumption, the thermal transmittance value of windows directly facing the outside air is proposed at the level of 1.4 W/m2K in the building energy efficiency policy and energy saving design standards.

On the other hand, the amount of sunlight transmitted is expressed as a solar heat gain coefficient (SHGC value, %). Generally, a high value is required for the SHGC value to use solar radiation during the heating period, and a low value is required for effective blocking of solar radiation during the cooling period.

When high insulation is intended for glass, as the transmittance decreases, the SHGC value also decreases. Since the heat gain from the south side is greater than the heat loss, if the SHGC value is too small, it is unfavorable to the utilization of solar radiation during the heating period. Therefore, the SHGC value does not have much meaning, and the application of high-insulation windows should be prioritized.

It should be noted that this result may be repeated even in the air conditioner. Light is radiated as heat indoors or outdoors through partial absorption after passing through the glass, but most of the light is converted into thermal energy after passing through the glass and coming into contact with the material in the room, and is emitted into the room. If this heat is not effectively controlled, a high cooling load will occur in the room. In a space with a high heat load by occupants or other indoor heat sources, cooling energy consumption may occur from mid-season to high cooling loads, or indoor comfort may be severely damaged by radiation from windows and doors.

Reasonable blocking of solar radiation is made by the shielding coefficient (SC value) by the awning. The outer shade is 0.15 ~ 0.20, and the inner shade is 0.60 ~ 0.70, and there is a big difference depending on the application location. In Korea, both cold and hot seasons exist at the same time, so it is necessary to apply internal awnings for heating and external awnings for air conditioners. However, since the domestic climate is subject to large meteorological changes, in general, external awnings may cause secondary safety damage due to damage, which is not easy to apply. Therefore, most of the domestic high-rise buildings have internal awnings, and even with high-reflectance awnings, most of the solar radiation is loaded indoors, creating a greenhouse effect.

In addition, since the material used for the inner awning is usually completely opaque, although the external sunlight is blocked when the blind is used, there is a problem that the view outside the window is completely impossible as the gaze of the occupant is completely blocked.

In addition, when such a blind is used, when a fire occurs, there is a problem in that the fire spreads through the blind.

Republic of Korea Registered Utility Model Registration No. 20-0287598 (Announcement on Jan. 21, 2003)

The present invention provides a film fabric for blinds and a manufacturing method thereof that do not impair the view outside the window while blocking sunlight flowing into the room.

In addition, it provides a film fabric for blinds and a method of manufacturing the same, which can dramatically reduce energy used for cooling by effectively blocking solar heat flowing into a room.

In addition, there is provided a film fabric for blinds capable of preventing a fire from occurring through the blinds in the event of a fire, and a method for manufacturing the same.

In addition, it provides a film fabric for blinds, which is inexpensive for installation or maintenance, and a method for manufacturing the same.

Film fabric for blinds according to an aspect of the present invention for achieving the above object is a first polyester film layer having a metal film layer deposited to reflect sunlight, and the first polyester film layer as the center and a transparent second polyester film layer laminated on the outdoor side, and the first polyester film layer and the second polyester film layer provided between the first polyester film layer and the second polyester film layer An adhesive layer that adheres to each other may be provided.

An infrared blocking coating layer for blocking infrared rays may be formed on the first polyester film layer on an upper end of the metal film layer.

The second polyester film layer may be formed with a UV blocking coating layer for blocking UV rays on the side of the adhesive layer.

The adhesive layer may be formed by curing a bond having a flame retardant material.

The first polyester film and the second polyester film may be embossed.

The metal layer may be formed of an aluminum thin film.

A third polyester film layer for changing the transmittance or color may be attached to the opposite side to which the second polyester film layer is attached in the first polyester film layer.

The manufacturing method of the blind fabric according to an aspect of the present invention for achieving the above object comprises the steps of manufacturing a first polyester film layer having a metal film layer deposited to reflect sunlight, the first Preparing a transparent second polyester film layer to be laminated on the outdoor side with the polyester film layer as the center, and an adhesive layer formed by bonding the first polyester film layer and the second polyester film layer to each other and curing It may include the step of forming.

Forming an infrared blocking coating layer for blocking infrared rays on the upper end of the metal film layer in the first polyester film layer, and forming a ultraviolet blocking coating layer for blocking ultraviolet rays on the adhesive layer side in the second polyester film layer It may further include the step of

The first polyester film and the second polyester film may further include the step of forming embossing by embossing on the opposite side of the adhesive layer.

According to the film fabric for blinds and the manufacturing method thereof according to the present invention, it is possible to effectively block ultraviolet rays and infrared rays flowing into the room, and to maintain the transparency, so that the glare of the occupants and cooling for cooling the room without blocking the occupants' view load can be reduced.

In addition, when a fire occurs when the blind is used, it is possible to prevent the fire from spreading through the blind.

In addition, since the blind can be formed with a simple structure, the installation cost and maintenance cost of the blind can be reduced.

In addition, the adhesive layer for adhering the first polyester film layer and the second polyester film layer is flame-retardant to prevent the spread of fire through the blinds.

1 is a view showing the configuration of a film fabric for blinds according to an embodiment of the present invention.
Figure 2 is a view showing the configuration of the film fabric for blinds according to another embodiment of the present invention.
3 is a flowchart showing a method of manufacturing a film fabric for blinds according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it goes without saying that the present invention is not limited to these embodiments and may be modified in various forms.

In the drawings, in order to clearly and briefly describe the present invention, the illustration of parts irrelevant to the description is omitted, and the same reference numerals are used for the same or extremely similar parts throughout the specification. In addition, in the drawings, the thickness, width, etc. are enlarged or reduced in order to make the description more clear, and the thickness, width, etc. of the present invention are not limited to the bars shown in the drawings.

And, when a certain part "includes" another part throughout the specification, other parts are not excluded unless otherwise stated, and other parts may be further included. Also, when a part of a layer, film, region, plate, etc. is said to be “on” another part, this includes not only the case where the other part is “directly on” but also the case where another part is located in the middle. When a part, such as a layer, film, region, plate, etc., is "directly above" another part, it means that no other part is located in the middle.

Hereinafter, a film fabric according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing the configuration of a film fabric for blinds according to an embodiment of the present invention.

1, the blind film fabric 100 according to an embodiment of the present invention includes a first polyester film layer 110 having a metal film layer 111 deposited to reflect sunlight, and the A transparent second polyester film layer 120 laminated on the outdoor side around the first polyester film layer 110 , and the first polyester film layer 110 and the second polyester film layer 120 . An adhesive layer 150 is provided between the first polyester film layer 110 and the second polyester film layer 120 to adhere to each other.

The transparent first polyester film layer 110 and the second polyester film layer 120 may be manufactured by the following method.

(A) A first-step reaction of forming bishydroxyethylene terephthalate or a low polymer thereof by heating terephthalic acid or an ester-forming derivative thereof and ethylene glycol at a temperature of 260 to 300° C.

(B) The produced bishydroxyethylene terephthalate or its lower polymer is usually smooth at 280 to 310°C in the presence of at least one catalyst among antimony compounds, titanium compounds and germanium compounds, and various additives such as phosphoric acid-based thermal stabilizers. A second step reaction for the production of liquid PET having a certain viscosity by the condensation reaction.

The polyester resin obtained through this reaction is pelletized, undergoes a preliminary crystallization process and a drying process, and then is used for film production.

In the polyester film manufacturing process, the polyester resin is melted at a high temperature of 280 ° C or higher, then extruded through a feed block and cooled and solidified at room temperature using an electrostatic casting method using a casting drum in which cooling water is circulated. After preparing an amorphous unstretched polyester film, it is stretched at a temperature above the glass transition temperature by using a roll arranged vertically or horizontally in the same longitudinal direction as the moving direction of the film at a certain ratio or more, The first and second polyester film layers 110 and 120 are prepared by stretching the stretched film at a predetermined ratio or more in the transverse direction perpendicular to the traveling direction in a tenter preheated with hot air.

On the other hand, it is important to reduce the friction coefficient with the roll and to maintain a certain degree of transparency in order to improve the driving performance. In order to improve drivability, as an additive _{, excellent transparency particles such as SiO 2} of white carbon type are used as a master batch and mixed with virgin chips, which are inorganic particles. The polyester film layers 110 and 120 may be manufactured.

A metal film layer 111 is formed on the outdoor side of the first polyester film layer 110 . The metal film layer 111 formed on one side of the first polyester film layer 110 may block the radiant heat flowing into the room when the film fabric for the blind is used as a blind by reflecting sunlight. An aluminum thin film may be used as the metal film layer 111 formed on one side of the first polyester film layer 110 . The aluminum thin film 111 is formed of pure aluminum with a purity of 99% or more, and the first polyester film layer 110 is adhered to one surface of the aluminum thin film.

The bonding of the aluminum thin film 111 and the first polyester film layer 110 may be performed by bonding the aluminum thin film 111 and the first polyester film layer 110 supplied in a roll type using a two-component dry adhesive. In order to do so, since this technique is generally known in the prior art, a detailed description thereof will be omitted.

On the other hand, to prevent the aluminum thin film 111 from being oxidized by harmful gases or ultraviolet rays when exposed to the air, and to maintain the reflectance of 95% or more and the emissivity of 0.05 or less of aluminum, an oil-based printing solvent is applied to the entire surface with a thickness of 6 μm or less. It may be applied to form a coating layer.

Forming a coating layer on the surface of the aluminum thin film 111 can contribute to cost reduction, etc., since using a printing machine typically used in a printing factory can be utilized without additional equipment.

After the coating layer is formed on one surface of the aluminum thin film 111, the aluminum thin film 111 and the coating layer are cured by passing through a heat roller maintaining a temperature of 150 to 200 ° C to prevent peeling. it is preferable As the shape of the aluminum constituting the aluminum thin film 111 , a conventional aluminum foil having a thin thickness may be used.

The reflectance of aluminum to radiant heat is 95%~97% or more, the emissivity is 0.03~0.05 or less, but when the thickness of the coating layer is 6㎛ or more, the reflectance starts to drop, and when the thickness of the coating layer) is 12㎛ or more, the reflectance is 50%~ When the reflectance falls below 50%, it is not suitable as the aluminum thin film 111 . Therefore, in order to maintain a reflectance of 95% or more and an emissivity of 0.05 or less for radiant heat, it is preferable to maintain the thickness of the coating layer to 6 μm or less.

Meanwhile, the first polyester film layer 110 may further include an infrared blocking coating layer 112 for blocking infrared rays on the upper end of the metal film layer 111 .

The infrared blocking coating layer 112 includes 10 to 25 wt% of molybdenum, 12 to 25 wt% of a mixture of Diantimony trioxide and tin oxide, 5 to 25 wt% of Cesium tungsten oxide %, Indium 5 to 25% by weight, 2-Methoxyethanol 5 to 22% by weight, Tungsten trioxide 0.1 to 3% by weight, Silver oxide 0.1 to 3% by weight, Carbon nanotubes (Carbon Nanotube) 0.1 to 2% by weight, platinum (Platinum) 0.1 to 1% by weight, pigment 0.1 to 1% by weight, and the balance may be formed by coating with an infrared blocking composition comprising an organic solvent.

The infrared blocking coating layer 112 blocks infrared rays flowing into the room from the outside to prevent the temperature of the room from rising, thereby reducing the cooling load of the room. In addition, by being coated on the aluminum thin film 111, it is possible to prevent the aluminum thin film 111 from being oxidized, thereby preventing the aluminum thin film 111 from being destroyed.

The manufacturing method of the second polyester film layer 120 has been described above, and a detailed description thereof will be omitted.

A UV blocking coating layer 121 for blocking UV rays is formed on the adhesive layer 130 side on the second polyester film layer 120 .

UV protection coating layer 121 is 20 to 30% by weight of acrylic resin (Acrylic resin), 20 to 30% by weight of butyl acetate (Butylacetate), 5 to 15% by weight of benzotriazole (Bezotriazol), and 2-butoxy Ethyl acetate (2-Butoxyethyl acetate) may be formed by coating with a composition for UV protection containing 40 to 50% by weight.

As such, it is possible to prevent UV rays of sunlight from entering the room by the UV blocking coating layer 121 formed on the second polyester film layer 120, so that exposure of people living in the room to UV rays can be prevented. there is.

On the other hand, the adhesive layer 150 for bonding the first polyester film layer 110 and the second polyester film layer 120 formed as described above to each other is provided.

The adhesive layer 150 may be formed by curing a bond including a flame retardant material. Therefore, it is possible to prevent the fire from spreading through the blind made of such a film fabric.

At this time, as the flame retardant, alumina trihydrate-based, halogen-based, phosphorus-based, halogenated phosphorus-based additive-type flame retardants or reactive flame retardants may be used.

Meanwhile, the first polyester film 110 and the second polyester film 120 may be embossed to form embossing 115 and 125 , respectively. The embossing process may apply heat to form flat embossings 115 and 125 .

To this end, a polyester outer layer for preventing fusion may be laminated on both sides of the polyester films 110 and 120 . The reason for designing such a layer structure is due to the embossing processing conditions. In a general embossing process, an unwinder, guide rolls, a drum, an emboss roll, a guide roll, a rewinder, etc. are arranged in order. Here, the drum is placed just before the embossing roll, and the drum is preheated for better embossing when the film enters the embossing roll. However, since the material of the drum is usually made of steel, when a film with low thermal stability is introduced, a problem in that the film is fused to the drum occurs. In order to overcome such a problem, polyester having excellent adhesion resistance was used for the outer layer, and more specifically, polybutylene terephthalate (PBT) or polypropylene terephthalate (PPT) alone or a mixture was used for the outer layer. This prevents fusion from occurring in the high-temperature embossing process.

In this way, the embossing treatment can be performed on the polyester films 110 and 120 by removing the polyester outer layer after the embossing 115 and 125 are generated on the polyester films 110 and 120 .

When the first and second polyester films 110 and 120 are embossed, it is possible to improve the mechanical strength of the film fabric 100 for blinds, so that the film fabric 100 for blinds is folded or stamped, such as folds or scratches on the surface. can prevent this from happening. In addition, light scattered into the room is evenly distributed, and good transparency can be provided.

On the other hand, a summary of the various performances of the above-described film fabric 100 for blinds is shown in Table 1 below.

thickness 3mm Test Methods visible light transmittance 2.7 KS L 2514 visible light reflectance Out 59.1 KS L 2514 inside 7.9 solar heat transmittance 4.2 KS L 2514 reflectivity 59.6 absorption rate 36.1 Infrared blocking rate 900~1000nm 93.4 MRSOL 780~2500nm 95.9 UV protection rate 99 KS L 2514 Total solar energy blocking rate 84 KS L 2514 shielding factor 0.18 KS L 2016 Solar heat gain coefficient 0.16 KS L 2514 scratch resistant >H ASTM D3363 Adhesion of hard coating surface 5B
(0% peeling) ASTM D3359

Meanwhile, the film fabric according to the above-described embodiment may be modified and implemented in various shapes. Hereinafter, the configuration of the film fabric for blinds according to another embodiment of the present invention will be described. Hereinafter, in describing the configuration of the film fabric for blinds according to another embodiment of the present invention, the same reference numerals are used for the same configuration as in the above-described embodiment, and a detailed description thereof will be omitted.

2 is a view showing the configuration of a film fabric for blinds according to another embodiment of the present invention.

Referring to FIG. 2 , the film fabric 100 for blinds according to another embodiment of the present invention has transmittance or color on the opposite side to which the second polyester film layer 120 is attached in the first polyester film layer 110 . It further includes a third polyester film layer 130 for changing the.

The third polyester film 130 may contain 0.01 to 10 wt% of a dye to change transmittance or color.

In addition, 0.01 to 10% by weight of a flame retardant for delaying flammability may be contained. In this case, the flame retardant may be an alumina trihydrate-based, halogen-based, phosphorus-based, halogenated phosphorus-based additive-type flame retardant or reactive flame retardant.

The third polyester film layer 130 contains 0.01 to 10% by weight of a dye and 0.01 to 10% by weight of a flame retardant, has excellent light-shielding properties, and has excellent applicability to good materials such as adhesives or adhesives. It makes it possible to further block UV rays and heat rays of light.

On the other hand, in the film fabric 100 for blinds according to an embodiment of the present invention, the first polyester film layer 110 , the second polyester film layer 120 , and the third polyester film layer 130 are sequentially formed by bonding. To this end, an adhesive layer 150 is provided between the first polyester film 110 and the second polyester film 120 and between the second polyester film 120 and the third polyester film 130 , respectively.

As such, by further providing the third polyester film layer 130, the transmittance of light flowing into the room or the color of the film fabric for blinds can be changed.

At this time, the embossing 135 may be formed in the third polyester film layer 130 to prevent the film fabric 100 for blinds from being folded or stamped on the surface from being folded or scratched.

Next, a method for manufacturing a film fabric for blinds according to an embodiment of the present invention will be described.

3 is a flowchart illustrating a method of manufacturing a film fabric for blinds according to an embodiment of the present invention.

Referring to FIG. 3 , the method of manufacturing a film fabric for blinds according to an embodiment of the present invention includes manufacturing a first polyester film layer 110 having a metal film layer 111 deposited to reflect sunlight. (S100), and the step (S200) of preparing a transparent second polyester film layer 200 laminated on the outdoor side around the first polyester film layer 110 (S200), and the first polyester film layer ( 110) and the step (S300) of forming an adhesive layer 150 formed by bonding and curing the second polyester film layer 120 to each other.

According to the manufacturing method of such a film fabric for blinds, it is possible to easily manufacture a film fabric for blinds that does not impair the view outside the window while blocking sunlight.

In addition, the step of forming an infrared blocking coating layer 112 for blocking infrared rays on the upper end of the metal film layer 111 in the first polyester film layer 110, and in the second polyester film layer 120 The method may further include forming a UV blocking coating layer 121 for blocking UV rays on the adhesive layer 150 side. Therefore, according to the film fabric for blinds manufactured in this way, it is possible to block infrared and ultraviolet rays flowing into the room.

In addition, the first polyester film 110 and the second polyester film 120 in the opposite side of the adhesive layer 150 may further include the step of embossing to form embossing (115, 125). Therefore, it is possible to prevent the film fabric 100 for blinds from being folded or stamped, and from being folded or scratched on the surface.

On the other hand, on the opposite side to which the second polyester film layer 120 is attached from the first polyester film layer 110, further comprising the step of attaching a third polyester film layer 130 for changing the transmittance or color You can do it too. Therefore, while controlling the amount of sunlight flowing into the room from the outside, it is possible to configure blinds of various colors when viewed from the inside.

In the above, a film fabric for blinds and a manufacturing method thereof according to an embodiment of the present invention have been described.

As described above, according to the film fabric for blinds and the method for manufacturing the same according to the embodiment of the present invention, it is possible to effectively block the solar heat flowing into the room and maintain the transparency. The cooling load can be reduced. In addition, since a metal film layer is formed under the first polyester film to reflect sunlight, it is possible to prevent reflection or glare from occurring on the screen. In addition, it is possible to block ultraviolet and infrared rays flowing into the room with a simple structure, thereby reducing the installation cost and maintenance cost of the blind.

In the above, a film fabric for blinds and a manufacturing method thereof according to an embodiment of the present invention have been described. However, the features, structures, effects, etc. as described above are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, features, structures, effects, etc. illustrated in each embodiment can be combined or modified for other embodiments by those of ordinary skill in the art to which the embodiments belong. Accordingly, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

100: film fabric for blinds 110: first polyester film layer
111: metal film layer 112: infrared blocking coating layer
120: second polyester film layer 121: UV protection coating layer
130: third polyester film layer 150: adhesive layer

Claims (10)

A first polyester film layer having a metal film layer deposited to reflect sunlight;
A transparent second polyester film layer laminated on the outdoor side around the first polyester film layer;
An adhesive layer provided between the first polyester film layer and the second polyester film layer to bond the first polyester film layer and the second polyester film layer to each other;
A third polyester film layer for changing the transmittance or color is provided on the opposite side to which the second polyester film layer is attached in the first polyester film layer,
An infrared blocking coating layer for blocking infrared rays is formed on the first polyester film layer on the upper end of the metal film layer,
A UV blocking coating layer for blocking UV rays is formed on the second polyester film layer on the side of the adhesive layer,
The third polyester film layer contains 0.01 to 10% by weight of a flame retardant to delay flammability,
The adhesive layer is formed by curing a bond having a flame retardant material,
The sunscreen coating layer is 20 to 30% by weight of acrylic resin, 20 to 30% by weight of butylacetate, 5 to 15% by weight of benzotriazole, and 2-butoxyethyl acetate (2- Butoxyethyl acetate) is formed of a composition for UV protection containing 40 to 50% by weight,
The infrared blocking coating layer is 10 to 25% by weight of molybdenum, 12 to 25% by weight of a mixture of antimony trioxide and tin oxide, 5 to 25% by weight of cesium tungsten oxide, Indium 5 to 25% by weight, 2-Methoxyethanol 5 to 22% by weight, Tungsten trioxide 0.1 to 3% by weight, Silver oxide 0.1 to 3% by weight, carbon nano Tube (Carbon Nanotube) 0.1 to 2% by weight, Platinum (Platinum) 0.1 to 1% by weight, pigment 0.1 to 1% by weight and the remainder of the film fabric for blinds, characterized in that formed from an infrared blocking composition comprising an organic solvent . delete delete delete According to claim 1,
Film fabric for blinds, characterized in that the first polyester film and the second polyester film is embossed. According to claim 1,
The film fabric for blinds, characterized in that the metal film layer is an aluminum thin film. delete delete delete delete

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