KR101187841B1 - The energy saving coloured shielding-glass manufacturing process, and the coating composition therewith - Google Patents

Abstract

PURPOSE: A manufacturing method of energy saving type color shielding glass and a coating composition used in the same are provided to enhance energy reduction effects and aesthetic function of the shielding glass. CONSTITUTION: A manufacturing method of energy saving type color shielding glass comprises the following steps: obtaining color shielding glass composition by missing shielding glass composition with mineral paint(s100); transferring the color shielding composition to a coating solution injector(s200); injecting the transferred composition into a groove of a transfer roller(s300); transcribing the composition on a glass plate by rotating the transfer roller(s400); and transferring and thermosetting the glass plate(s500). The screening factor of the color shielding of the color shielding composition is 0.72. The color shielding composition comprises 0-5 wt% of glass binder resin, 0-0.1 wt% of a leveling agent, 0.3-15 wt% of mineral paint, and 20-80 wt% shielding composition. The mineral paint comprises one or more pigment selected from yellow, green, blue, purple, black or white pigment. [Reference numerals] (S100) Obtaining color shielding glass composition by missing shielding glass composition with mineral paint; (S200) Transferring the color shielding composition to a coating solution injector; (S300) Injecting the transferred composition into a groove of a transfer roller; (S400) Transcribing the composition on a glass plate by rotating the transfer roller; (S500) Transferring and thermosetting the glass plate

Description

The energy saving colored shielding-glass manufacturing process, and the coating composition therewith}

The present invention comprises the steps of mixing the masking composition and the mineral pigment to obtain a color masking composition; Moving the color masking composition to a coating liquid injector; Injecting the moved composition into the recess of the transfer roller; Transferring the composition onto a glass plate while the transfer roller rotates; It relates to an energy-saving color shielding glass manufacturing method comprising; transferring the glass plate to the heat curing.

In addition, the mineral pigment is characterized in that it comprises 0.3 to 15% by weight.

Korea has been pushing ahead with green growth policies since 2008, which has led to policies such as energy target management and building regulations.

In other words, buildings such as new houses and apartments are required to save 50% of energy, and windows and doors include energy labels and energy efficiency ratings.

On the other hand, windows and doors are widely used for the luxury and light effect of the exterior of the building, a large proportion of the windows is not easy to save energy, such as increased heating and cooling costs.

Accordingly, Low-E (Low-E, Low-Emissivity) glass has been studied to achieve low emissivity by thinly coating a metal or metal oxide such as silver on the surface of the glass.

Low-glass keeps the interior bright by transmitting most of the visible light through the window, effectively blocking the radiation in the infrared region, preventing the heat generated from the inside in the winter and the outside heat in the summer. It acts as a barrier to reduce cooling and heating costs.

Meanwhile, low-e glass is hard low-e glass by the pyrolytic process and soft low-e by the sputtering process according to the coating manufacturing method. It is divided into glass.

First, hard low-glass is produced by spraying a metal solution or powder onto the surface of the pane and thermally coating it in the pane manufacturing process. The coating material is a metal oxide (SnO 2) monomaterial.

This has the advantage that it is possible to heat treatment such as reinforcing processing, but the use of a number of metal is limited, the color is simple, and the coating film has a disadvantage that is cloudy.

Secondly, soft low-glass is produced by placing a glass plate already produced in a separate vacuum chamber and coating a thin film of metal such as silver (Ag), titanium (Ti) and stainless steel (Stainless Steel).

The advantage is that the optical performance is excellent, but there is a disadvantage that the coating hardness and durability compared to the hard coating.

Meanwhile, the inventor of the present application has proposed a thin film coating apparatus in Korean Patent Application No. 10-2011-0141167 to take advantage of both hard low- and soft low-glass.

Conventionally, although it was not possible to form a coating film having a uniform thickness on the upper surface of the curved glass plate, a technique for uniformly coating the coating liquid by transferring the coating liquid to the glass plate using the transfer roller 10 and the auxiliary roller 20 was proposed. There is a bar.

This is advantageous in that coatings containing a variety of components can be used in comparison with hard low-glass manufacturing methods, and also reduce the machine cost by coating without the need for a vacuum chamber, which is essential for soft low-glass manufacturing methods. It has a significant effect in that it can provide performance.

On the other hand, when reviewing the prior art related to the energy-saving coating composition, Korean Patent Publication No. 10-1013123 includes 10 to 60% by weight binder resin, 10 to 60% by weight composite metal oxide and 0.1 to 1% by weight leveling agent A composition is disclosed.

When reviewed schematically, the composition can be seen as a result derived in relation to the coating method using the same, in claim 4, the coating composition is inclined to have a predetermined slope with respect to the bottom of the coating surface in the state from the top to the bottom of the material surface It can be seen that it is described to carry out the coating process in a flow-through manner.

In other words, 10 to 60% by weight of the binder resin should be used to secure adhesion to the glass surface because it flows from the top to the bottom, and for the same reason, 0.1 to 1% by weight of the leveling agent can be used to secure the surface smoothness.

On the other hand, in order to produce color while retaining the shielding performance, it is necessary to mix pigments capable of coloring the composition having the shielding function.

Pigments can be broadly divided into inorganic pigments and organic pigments, and since the color tone, sharpness, hiding power, color fastness, etc. vary depending on the type, they are used for appropriate applications.

Therefore, by using the thin film coating apparatus of the Republic of Korea Patent Application No. 10-2011-0141167 as proposed by the inventor of the present application, it is possible to use or significantly reduce the glass binder resin and leveling agent in the coating composition and also to include suitable pigments. Accordingly, it is intended to propose a technology capable of providing various color colors to the shielding glass.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for producing an energy-saving color shielding glass and a coating composition used therein, by eliminating or drastically reducing the glass binder resin and leveling agent in the coating composition and also including suitable pigments. do.

The present invention comprises the steps of mixing the masking composition and the mineral pigment to obtain a color masking composition; Moving the color masking composition to a coating liquid injector; Injecting the moved composition into the recess of the transfer roller; Transferring the composition onto a glass plate while the transfer roller rotates; It provides a energy-saving color shielding glass manufacturing method comprising the step of transferring the glass plate by heat curing, to solve the technical problem.

The present invention has the remarkable effect of not using or greatly reducing the glass binder resin and the leveling agent and also including the appropriate pigment, thereby saving energy and improving aesthetic function.

1 is a main configuration of an apparatus that can be applied to a method for manufacturing an energy saving color shielding glass according to the present invention.
2 is a view showing the main steps of the method for manufacturing the energy-saving color shielding glass according to the present invention.

The terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms and the inventor may properly define the concept of the term in order to best describe its invention It should be construed as meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Therefore, various equivalents It should be understood that water and variations may be present.

Before describing the present invention with reference to the accompanying drawings, it should be noted that the present invention is not described or specifically described with respect to a known configuration that can be easily added by a person skilled in the art, Let the sound be revealed.

1 is a main configuration of a device that can be applied to a method for manufacturing an energy-saving color shielding glass according to the present invention, Figure 2 shows the main steps of a method for manufacturing an energy-saving color shielding glass according to the present invention. One drawing.

A feed roller 2 for transferring the glass plate 1 from the lower surface of the glass plate 1; It is installed to contact and rotate on the upper surface of the glass plate 1 conveyed to the upper surface of the feed roller 2, the elastic layer 12 for elastically contacting the glass plate 1 is formed on the surface, the elastic layer 12 Transfer roller 10 for transferring the coating material on the upper surface of the glass plate (1) by filling the coating material in the groove portion 13 is formed with a uniform groove portion 13; An auxiliary roller 20 which rotates in contact with the transfer roller 10 while rotating in contact with the recess 13 of the transfer roller 10 to fill a coating material; A coating liquid injector 30 for injecting a coating material between the auxiliary roller 20 and the transfer roller 10; A coating liquid mixer 40 for moving the mixed coating composition to the coating liquid injector 30 after mixing the shielding composition and the mineral pigment; And heat-curing the coating material while passing the glass material 10 transferred to the upper surface of the coating material at uniform intervals by the transfer roller 10 to form a coating film having a uniform thickness on the upper surface of the curved glass plate 1. It includes a thermosetting device (50).

Here, the coating liquid mixer 40 mainly performs the function of mixing the composition for shielding and the mineral pigment, and is preferably designed according to the temperature and pressure conditions for mixing the two.

Referring to FIG. 2, the main steps of a method of making a color shielding glass using the apparatus of FIG. 1 are shown.

In step S100, the shielding composition and the mineral pigment are mixed, and the color shielding coating composition mixed in the step S200 is transferred to the coating liquid injector 30, and the coating liquid is injected into the roller 10 in step S300.

Next, the coating liquid is transferred in step S400, and thermally cured in step S500 to prepare a color shielding glass.

Depending on the design conditions, it is, of course, possible to form the transfer means differently from the roller configuration shown in FIG.

Example  One. color  Preparation of Shielding Coating Composition

First, since the color shielding coating composition according to the present invention uses a method of transferring the coating liquid directly to the glass plate, the glass binder resin is 0 to 5% by weight, the leveling agent to include 0 to 0.1% by weight.

In addition, the present invention is represented by using a mineral pigment, it is to be included in 0.3 to 15% by weight.

Here, the mineral pigment may be used alone or in combination of several pigments to produce the required color.

For example, yellow pigments are chromium yellow, ocher and cadmium yellow, green pigments are emerald rust and chromium oxide green, blue pigments are Prussian blue and cobalt blue, purple pigments are manganese salt and mas salt, black Pigments are selected from the group of carbon black and iron black, and white pigments from silica bag, alumina bag, clay and calcium carbonate, respectively.

In addition, one or more materials selected from each pigment are mixed to produce the required color.

In addition, the mineral pigment according to the present invention is designed to have a color, but to be entirely transparent to add more aesthetic function as the appearance of the building.

Shielding functional composition is mainly used for the metal oxide, 20 to 80% by weight to be included.

Here, the shielding functional composition blocks infrared rays and ultraviolet rays, and allows the selection of sizes and materials that are easy to mix with mineral pigments as well as optical properties.

In general, the coating metal oxide is mainly formed of indium tin oxide (ITO) and / or antimony tin oxide (ATO) to form a complex metal oxide by mixing the necessary metal oxide.

In an embodiment of the present invention, a small amount of zinc oxide (5 to 15% by weight) and tin oxide (5 to 15% by weight) are mixed, and other necessary metal oxides are selected based on antimony tin oxide. Added (5-10 wt%).

Experimental Example  One. color  Optical Characteristics of Shielding Coating Compositions

According to Example 1, 5% by weight of the glass binder resin, 0.01% by weight of the leveling agent, 10% by weight of the mineral pigment (cadmium yellow), 49.99% by weight of the shielding composition (antimony tin oxide), 35% by weight of other solvents Was tested.

Color shield
Coating Composition Shielding coefficient
(SC) UV-rays
Blocking rate Visible light
Transmittance (%)
Transmission / reflection Solar radiation
(%)
Transmission / reflection / absorption Heat transmission rate
(W / m2K) Solar heat acquisition rate
Solar heat acquisition rate
(SHGC) Total calories acquired
(W / m2) Optical feature 0.72 67% 69 / 6.8 48 / 5.5 / 46 4.0 0.63 492-494

Here, the shielding coefficient (SC, Shading coefficient) is a ratio of the degree of the shielding of the radiant energy is a value when all the light passes through the window is 1, the closer to 0 can be seen that the sun is shielded a lot.

In addition, U-value is a value that indicates the amount of heat energy transmitted by convection and conduction. It indicates how much heat value is transferred per hour when there is a temperature difference of 1 degree between windows.

In addition, the solar heat gain coefficient (Solar heat gain coefficient, solar factor) represents the ratio of the solar energy introduced into the room through the window of the incident solar energy.

Relative heat gain (RHG) is also the sum of the solar radiation that penetrates the glass directly and the energy that the glass absorbs and radiates back into the room. That is, the small amount of total heat obtained means that the amount of heat flowing into the room from the outdoors during the summer is growing.

Considering the above experimental results, it is almost the same as the optical characteristics of the thermal barrier coating only the league mainly used in the market, it can be seen as a very suitable result as a function of the color coating composition.

Here, the optical characteristics may vary depending on the conditions of the composition ratio included in the composition, but the optical efficacy as a composition in which the glass binder resin and the leveling agent are greatly reduced and the mineral pigment is mixed can be recognized.

Meanwhile, the above descriptions using only FIGS. 1 to 2 describe only the main matters of the present invention, and the present invention is limited to the configurations and functions of FIGS. It is obvious that it is not limited.

1: glass plate
2: feed roller
10: transfer roller
10a: shaft
11: roller body
12: elastic layer
13: groove
20: auxiliary roller
30: coating liquid injector
40: coating liquid mixer
50: thermosetting device

Claims (5)

Mixing the masking composition and the mineral pigment to obtain a color masking composition;
Moving the color masking composition to a coating liquid injector;
Injecting the moved composition into the recess of the transfer roller;
Transferring the composition onto a glass plate while the transfer roller rotates;
Transferring the glass plate to the heat curing; including,
The mineral pigment is characterized in that it comprises 0.3 to 15% by weight, energy-saving color shielding glass manufacturing method.
delete The method of claim 1,
The shielding coefficient of the color shielding composition is characterized in that 0.72, energy saving color shielding glass manufacturing method.
The color shielding composition injected into the recess of the transfer roller and transferred to the glass plate while the transfer roller rotates,
0 to 5 wt% glass binder resin; Leveling agent 0 to 0.1% by weight; 0.3-15 wt% mineral pigment; A color shielding composition, characterized in that it comprises 20 to 80% by weight of the shielding composition.
The method of claim 4, wherein
The mineral pigment, color shielding composition, characterized in that it comprises at least one pigment selected from the group consisting of yellow, green, blue, purple, black or white pigments.

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