JPH076244U - Daylight window - Google Patents

Abstract

(57) [Summary] [Structure] A daylighting window in which the condensation surface is subjected to a drip process. [Effect] The daylighting window with dew condensation prevention by the drip treatment according to the present invention has excellent water resistance and daylighting without water drops falling due to dew condensation water, and also imparts anti-fog property and durability. You can also create a comfortable living space.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a daylighting window, such as a skylight and an opening / closing window, which has excellent durability and is prevented from dew condensation by a drop treatment.

[0002]

[Prior art]

 Conventionally, plastic materials, inorganic glass, etc. have been widely used for articles such as window glass, mirror surfaces, spectacle lenses, goggles, etc. by taking advantage of their properties as transparent substrates. However, the drawback of articles using these transparent substrates is that when they are used in hot and humid places or at boundaries where there is a large difference in temperature and humidity, dew condensation occurs on the surface of the article, which causes the surface of the article to become cloudy. However, it is often seen that water drops adhere.

This tendency is particularly remarkable in the case of the outside air intake window, and as a phenomenon, dew condensation water may fall into the room. Conventionally, in order to enhance the heat insulation effect as much as possible, a multi-layer glass is used, a screen is provided at the interface with the room, and a frame assembly is provided to cover the inner surface as in JP-A-4-315640. Has been taken. However, it was difficult to completely prevent condensed water from falling into the room in order to take in the original purpose of light.

Attempts have been made to solve this drawback by providing a water-repellent film on the surface layer of the indoor surface, but none have been obtained that completely prevent water droplets from falling.

[0005]

[Problems to be solved by the device]

 The present invention is intended to solve the above drawbacks, and an object of the present invention is to provide a daylighting window in which condensed water is reduced and water drops are prevented from falling.

[0006]

Means for Solving the Problems To achieve the above object, the present invention has the following configuration.

[Daylighting window having a dew drop surface applied to the dew condensation surface.] In the present invention, the daylighting window is a window such as a skylight and an opening / closing window, and a position where dew condensation water falls if it is not processed. The one attached to.

In the present invention, by performing a drip treatment on the outermost layer of the inner surface of the daylighting window, the condensed water does not drop and flows to the lower part, so that it can be collected in a tray or the like and can be led to a water pipe or the like. is there.

The drop treatment in the present invention is not particularly limited as long as it is a treatment for forming a water film (generally referred to as imparting wettability) without dew condensation water generated on the substrate becoming water drops. Instead, for example, a method of providing a film, laminating a drop-treated film, etc. may be mentioned. Further, it is preferable in terms of durability that the effect is not reduced by water adhesion.

The practicability of the drop treatment is measured by the static contact angle of water on the treated surface, initial adhesion, and water resistance. The static contact angle with water is preferably 50 degrees or less, more preferably 30 degrees or less. Furthermore, as an index of the initial adhesion, the criterion is that at least a cellophane tape is brought into close contact and is rapidly peeled in the right angle direction. For example, in the case of a coating, the coating does not peel off. More preferably, the coating film does not peel even in a goose-eye peel test according to JIS D-0202. As an index of water resistance, the function of retaining the drop effect after being immersed in warm water at 50 ° C for 1.0 hour serves as a judgment criterion.

As a concrete treatment method of the drop treatment which can be applied in the present invention, for example, the following coating film can be mentioned. Application of a copolyester ether resin obtained from a dicarboxylic acid component containing an ester type molded sulfonic acid alkali metal salt as a functional group and a glucose component described in JP-B-60-44147, or JP-B-2-24213. A coated product containing an inorganic colloid, a surfactant and a polyether in the above described copolyester ether resin is also applicable. Other examples of the use of inorganic colloids and surfactants include adding organic silane compounds, aluminum salts and organic anionic compounds to water-dispersible sols of inorganic oxides such as silica and aluminum for agricultural greenhouses. Coating materials have been proposed in Japanese Examined Patent Publication No. 1-31785 and Japanese Examined Patent Publication No. 04-78673. In this method, a treated base film may be attached to one side of the base film, or the treatment liquid may be directly applied to the inner surface of the base material, which is particularly preferably applied in the present invention.

The drip treatment applicable to the present invention may include a composition containing a reactive hydrophilic component which is crosslinked by photocuring or thermosetting as an essential component, in addition to the above-mentioned coating material.

As an example of a typical photo-curing coating in the present invention, an active energy curable resin containing an oligomer or a polymer such as 2-hydroxyethyl acrylate in JP-A-4-353570 may be used. A method has been proposed in which a glycoside such as pentylnonyl glycoside and a surfactant are blended to form an antifogging film having excellent water resistance. Furthermore, in JP-A-2-63826, a hydrophilic monomer such as 2-hydroxyethyl methacrylate and a crosslinking monomer such as neopentyl glycol diacrylate and pentaerythritol acrylate are added to a functional polymer such as urethane acrylate, There has been proposed a method of electron beam curing a coating film having a film thickness of 30 μm or more, in which a surfactant is added if necessary. This proposal is also useful in the present invention because it has excellent water resistance and wettability. As another photocurable composition, a composition prepared by blending a copolymer of 2-hydroxyalkyl (meth) acrylate and dialkylaminoalkyl (meth) acrylate described in JP-A-3-31369 can be used. To be In the crosslinking by photo-curing, methods using various light sources are used, and ultraviolet curing, electron beam curing, and other ionizing radiation curing can be used. It is also preferable to use a curing accelerator for each.

A typical example of the composition having drop curing by heat curing in the present invention is a compound in which a specific block or graft copolymer and a surfactant are blended. In particular, both (1) a monomer having a sulfonic acid group, (2) a monomer having a functional group such as a glycidyl group, and (1) and (2) described in JP-A-3-221565 Obtained from a hydrophilic polymer portion obtained from a polymerizable hydrophilic monomer, a monomer having a functional group, and a hydrophilic monomer copolymerizable with (1) and (2). A composition containing a block or graft copolymer composed of a hydrophobic polymer portion and an amine compound having a surface-active effect and having a ratio of 100: 5 to 40 has excellent antifogging sustainability, and particularly good water resistance. And is preferably used in the present invention.

In the drop treatment in the present invention, adhesion-imparting polymers, polymerizable diluents, fillers, stabilizers, leveling agents, defoaming agents, and ultraviolet rays are used within the range where the uniformity of the coating is not impaired due to the expression of functions. Absorbents, dyes, pigments and the like can be optionally added.

As a method for providing the coating, it is preferable that the coating is directly applied to the inner surface of the daylighting window at the lowest possible cost and the treatment method is simple. As a preferable coating method, spray coating, flow coating, dip coating and the like are particularly preferable. Further, it is more preferable that the drying and curing methods can be carried out at room temperature as much as possible since recoating is possible.

On the other hand, a method of sticking the film subjected to the drop treatment to the inner surface of the outside air intake window is also a cheap and simple method and is preferable. As a bonding method, water or a solvent compatible with water is used for bonding. Stick together by electrostatic bonding. A method of applying a pressure sensitive adhesive or an adhesive to the back surface or applying it to the base material and then laminating it may be considered. However, a particular method is preferable because of easy attachment and peeling. A preferred example is the method described in JP-A-4-353570, since the film can be molded alone and can be bonded with water.

According to the present invention, it is possible to prevent dew condensation water from dropping into a room, and further, it is possible to provide a daylighting window excellent in antifogging property and water resistance.

The embodiment of the present invention is shown in FIGS. 1 to 4 in the case of a daylighting window of an outside air intake window type.

FIG. 1 shows the case of a daylighting window which is opened and closed manually. There are various other types of daylighting windows, such as an electric type, a slide type, and a fan. Further, there are types of glass such as flat, dome, diamond cut, etc., but in the present invention, a drop treatment method according to the shape can be appropriately adopted and is not limited. FIG. 2 shows an embodiment in the case of being hermetically sealed. When the drip treatment according to the present invention is not applied, dew condensation water may be generated on the inner surface of the room due to the difference in temperature and humidity between the room and the room, and the water drops may drop into the room. FIG. 3 is a cross-sectional view of a case where a double-layer glass is used and a drop treatment film is laminated. Since the dew condensation water generated on the surface of the drop treatment film 7 becomes a water film, the water drops can be guided to the water receiving zone 6 without dropping. FIG. 4 is a diagram showing the lamination of the droplet treatment film. It shows that the droplet treatment film 7 is immediately adhered to the interior glass 4 by an electrostatic adhesion method or water, or a base coated with a droplet coating film. It is also possible to use a method of applying the pressure sensitive adhesive 8 on the back surface of the fill and then laminating it.

[0021]

【Example】

 Hereinafter, in order to make the effects of the present invention clearer, the present invention will be described in more detail by way of examples, but the present invention is not limited thereto.

Example 1 Toray's 125T-Q379 film (drop treatment + UV cut treatment film) was applied to the inner glass surface of a daylighting window composed of a multi-layered crow (550 × 700 × 20t, intermediate air layer 10 mm). Those coated with an ethylene-vinyl acetate adhesive were stuck together.

The state of dew condensation was observed under the condition that the inclination angle of the lighting window was 15 degrees, the outer surface atmosphere was 0 ° C. 30% RH, and the inner surface atmosphere was 30 ° C. 80% RH. The amount of residual condensed water was 1/10 of that of the untreated one, and no water droplets were found falling inside the room. The film was evaluated by the following method. The results are shown in Table 1.

(A) Static contact angle: Using a CA-D type contact angle manufactured by Kyowa Interface Science Co., Ltd., the static contact angle to water was observed by the droplet method.

(B) Adhesion: A 1.8 mm wide cellophane tape manufactured by Nichiban Co., Ltd. was strongly pressed against the coated surface, was rapidly peeled in the direction of 90 degrees, and the peeled state of the coating was observed after repeating three times.

(C) Water resistance: The substrate provided with the film was immersed in hot and cold water at 50 ° C. for 1.0 hour, and after the surface was dried, the static contact angle was measured.

Example 2 In place of the film of Example 1, a transparent polyester film “Lumirror” 50T manufactured by Toray Industries, Inc. was added to a drip agent (trade name: “Lumirror” W drip manufactured by Izumi Co., Ltd.) The adhesive agent was spray-coated, and the back surface was coated with an ethylene-vinyl acetate adhesive.

In the same manner as in Example 1, the occurrence of dew condensation, the amount of residual dew condensation water, and the state of water drop drop were all good. The evaluation results of the film are shown in Table 1.

Example 3 The drip agent of Example 2 was applied by direct flow coating to the inner surface of the lighting window of Example 1. Next, drying was carried out at 80 ° C. for 15 minutes to fix the dropping agent.

In the same manner as in Example 1, the occurrence of dew condensation, the amount of residual dew condensation water, and the state of water drop drop were all good. The evaluation results of the film are shown in Table 1.

Example 4 Toray Co., Ltd. polyester film “Lumirror” 50T film primed with Asai Bussan Co., Ltd. antifogging paint (UVICA-U-021) in a 1/5 amount of isopropyl alcohol What was diluted with was applied to a thickness of 20 μm with a roll coater. Next, a film was formed by ultraviolet curing with a high pressure mercury lamp at an integrated light amount of 2700 mJ / cm ² . When this film was attached to the inner surface of the lighting window with the treated surface facing the surface, the same practical test as in Example 1 was carried out, and similarly good results were obtained. In addition, no clouding phenomenon occurred on the surface layer. The evaluation results of the film are shown in Table 1.

Example 5 Instead of the film of Example 1, a separate film of Dai Nippon Printing Co., Ltd. (trade name: DIMS Dopp) was peeled off and attached to the inner surface of the lighting window. This product also obtained the same result as in Example 4 in the practical test. The evaluation results of the film are shown in Table 1.

Comparative Example 1 The same evaluation as in Example 1 was performed on an untreated daylighting window in which the inner surface layer was wiped off using a wet cloth to remove the adhered dirt. Table 1 shows the evaluation results of the surface layer of the inner glass.

[0034]

[Table 1]

[0035]

[Effect of device]

 The daylighting window with dew condensation prevention according to the present invention does not drop water drops due to dew condensation water, is excellent in water resistance and daylighting property, and can also be provided with anti-fog property and durability. You can create a comfortable living space.

[Brief description of drawings]

FIG. 1 is a diagram showing a concept (when in use) of an application of a lighting window of the present invention.

FIG. 2 is a view showing the concept of use of the lighting window of the present invention (when sealed).

FIG. 3 is a cross-sectional view of a lighting window of the present invention.

FIG. 4 is a view showing the lamination of the drop treatment film of the lighting window of the present invention.

[Explanation of symbols]

 1: Roofing material 2: Daylighting window 3: Outdoor surface glass 4: Indoor surface glass 5: Sealing material 6: Water receiving zone 7: Drop treatment film 8: Adhesive layer

Claims (3)

[Scope of utility model registration request] 1. A daylighting window having a dew condensation surface subjected to a drop treatment. 2. The lighting window according to claim 1, wherein the drop treatment is performed by forming a hydrophilic thin film with a colloid composed of alumina sol and silica sol. 3. The daylighting window according to claim 1, wherein the drop treatment is performed with an active energy ray-curable resin containing a reactive hydrophilic component as a main component.