JP2003301675A - Blind - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a blind capable of effectively preventing the condensation made on the surface such as a window glass, a window frame sash or the like and effectively executing absorption/desorption of moisture in a space, particularly an uninhabited space, at a window side having the window glass, the window frame sash or the like susceptible to condensation while keeping a comfortable humidity in a habited space on the indoor side. <P>SOLUTION: At least one side of slat basic materials of a slat constituting the blind has an absorption/desorption resin layer containing water absorption substance and moisture absorption substance. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blind, and more specifically, it includes a slat having a moisture absorbing / releasing resin layer on at least one side, preferably both sides, of a slat substrate, and the surface of a window frame sash or the like. The present invention relates to a blind characterized in that it is possible to effectively prevent dew condensation that occurs on the blind.

[0002]

2. Description of the Related Art Modern buildings are compared with those of the former pure Japanese architecture due to the spread of reinforced concrete structures and prefabricated construction methods, new building materials made of synthetic materials such as resin-processed plywood, and the development of metal sashes in doors and windows. For example, it is extremely airtight. It can be said that the high airtightness of such a building is very desirable from the viewpoints of saving energy resources by improving the cooling and heating effect and preventing neighborhood noise pollution by improving soundproofing. However, on the other hand, the humidity generated by the living activities of the resident in the room (human breathing, cooking, bath / shower, etc.) is not easily escaped to the outside and can easily be trapped inside the room. Condensation on the surface of the window frame sash and the like is not only aesthetically and tactilely undesirable, but also causes stains and corrosion of building materials and may shorten the life of the building.

[0003] In recent years, humidifiers have been increasingly used indoors for the purpose of preventing colds and preventing skin dryness in the winter, and the humidity of the humidifiers is the surface of window glass, window frame sashes and the like. It promotes the occurrence of dew condensation.

[0004]

SUMMARY OF THE INVENTION The present invention has been made by paying attention to the above problems in the prior art. The problem is that it occurs on the surface of window glass, window frame sash, etc. Blinds that can effectively prevent dew condensation, especially indoor living spaces that maintain comfortable humidity but are not living spaces, such as window glass and window frame sashes that easily cause dew condensation. It is intended to provide a blind capable of effectively absorbing and dehumidifying the humidity of the.

[0005]

In order to achieve the above object, the invention according to claim 1 has a moisture absorbing / releasing resin layer provided on at least one surface of the slat base material of the slats constituting the blind. It is a blind characterized by.

The invention described in claim 2 is the same as claim 1
In the blind described in 1 above, a moisture absorbing / releasing resin layer is provided on the surface of a blind constituent member other than the slat.

Furthermore, the invention according to claim 3 is the blind according to claim 1 or 2, characterized in that the hygroscopic resin layer contains a water-absorbing substance and a hygroscopic substance. .

[0008]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic cross-sectional view showing an embodiment of a slat constituting a blind of the present invention.

As shown in FIG. 1, the slat which constitutes a part of the blind of the present invention has a water-absorbing substance 12 such as a super-water-absorbing polymer on one side of an appropriate slat base material 11 serving as a support.
2 and a hygroscopic resin layer 12 made of a resin composition containing a hygroscopic substance 123 such as silica. A plurality of such slats are other blind constituent members (head box 21, bottom rail 24, ladder tape 23, lifting cord 25, etc.).
Are combined with each other to form a blind as shown in FIG.

The specific material and shape of the slat base material 1 are not limited at all, and for example, metal base materials such as steel plate, brass plate, aluminum plate, etc., fiber material such as paper, woven cloth or non-woven cloth, etc. Sheet, synthetic resin sheet such as polyolefin resin sheet and polyester resin sheet, synthetic rubber sheet, acrylic resin plate or polycarbonate resin plate,
Any one can be selected and used from various base materials such as ABS resin plate, synthetic resin base material such as FRP, wood base material such as plywood or laminated wood, fiber board, particle board and the like. . Also, if necessary, the surface of these base materials
Base coat treatment, primer treatment, corona discharge treatment,
Appropriate surface treatment such as ozone treatment, flame treatment, and polishing treatment may be performed.

In particular, in the blind of the present invention, any metallic material conventionally used as a slat base material for blinds can be used as the slat base material. Specifically, for example, a lightweight aluminum alloy base material is preferably used.

As described above, the moisture absorptive and desorptive resin layer 12 on the slat substrate 1 having such a structure is made of the resin composition in which the water absorptive substance 122 and the hygroscopic substance 123 are dispersed in the substrate resin 121 as described above. It is provided. The surface on which the moisture absorptive and desorptive resin layer 12 is formed is not limited to one surface of the slat base material 1 as shown in FIG. 1, and may be formed on the other surface of the slat base material 1 or on both surfaces. It may be. In short, when the blind is set near the window frame and the slat is closed, the moisture absorptive and desorptive resin layer 12 on the slat is
It suffices that the moisture absorptive and desorptive resin layer 12 is provided on the slat base material in such a state that the portion is located on the window side.

The substrate resin 121 of the moisture absorptive and desorptive resin layer 12 is a resin material which has a film-forming property, has a low water-absorption swelling property, and can maintain the shape of the film even when the water-absorbing substance 122 absorbs water. Any resin may be used, but for example, acrylic resin, urethane resin, SBR, etc. may be used so as not to prevent absorption and release of water between the water-absorbing substance 122 and the hygroscopic substance 123 in the ambient air. It is preferable to use a resin having high moisture permeability such as a resin, a vinyl acetate resin, an ethylene-vinyl acetate copolymer resin, a silicone resin, a polyamide resin, a polybutene resin, a polyvinyl alcohol resin, and the like. Any one of
The seeds may be used alone or a mixture of two or more kinds may be used.

The water-absorbing substance 122 added to the moisture absorptive and desorptive resin layer 12 is a substance having a relatively sparse structure containing many hydrophilic functional groups such as a hydroxyl group and a carboxyl group and exceeding its own volume. Any substance capable of absorbing and storing a large amount of water inside may be used, and specifically, a known general superabsorbent polymer or the like is used. For example, starch-acrylic acid graft polymer, starch-acrylonitrile graft polymer, cellulose-acrylonitrile graft polymer, polyvinyl alcohol cross-linked polymer, sodium polyacrylate cross-linked polymer, methyl acrylate-vinyl acetate copolymer saponified product and the like. Used. It is also possible to use natural products such as potato starch and dextrins,
These water-absorbing substances can be used alone or in admixture of two or more.

As the hygroscopic substance 123 added to the moisture absorptive and desorptive resin layer 12, porous hydrophilic inorganic substance particles having a large specific surface area such as silica gel, zeolite, diatomaceous earth, and calcined talc are used. Can be applied. By adding the hygroscopic substance 123, it is possible to improve the moisture absorption / desorption rate when the humidity in the ambient air changes, and to more effectively exhibit the moisture absorption / desorption function.
The effect of such an effect is that the water-absorbing substance 122 such as a super-water-absorbing polymer only absorbs the moisture that is spontaneously condensed around the water-absorbing substance 122, while the hygroscopic substance 123 is in a gaseous state at high humidity. Water molecules are positively condensed and transferred to the water-absorbing substance 122. On the other hand, when the humidity is low, on the contrary, the water-absorbing substance 12
It is presumed that this is because the 2 has a function of receiving the water held and vaporizing it.

The amount of the hygroscopic substance 123 added is not particularly limited in the present invention. Hygroscopic substance 123
Since the amount of water absorbed by itself is smaller than that of the water-absorbing substance 122, if the hygroscopic substance 123 is blended in a larger amount than the water-absorbing substance 122, the saturated water absorption amount is small but the moisture absorption / desorption rate when the environmental humidity changes. If the amount of the water-absorbing substance 122 is higher than that of the hygroscopic substance 123, the sensitivity to changes in environmental humidity will decrease, but the saturated water absorption amount will increase. The addition amount of these may be appropriately adjusted according to the above. In general, the hygroscopic substance 123 may be a smaller amount than the water-absorbing substance 122 in the catalytic sense of the water-absorbing substance 122.
It is desirable to mix the hygroscopic substance 123 in an amount of about 30 to 100 parts by weight with respect to parts by weight.

The mixing ratio of the substrate resin 121 and the water absorbing substance 122 in the moisture absorptive and desorptive resin layer 12 is not particularly limited in the present invention, but generally 20 to 80 weight of the substrate resin 121 is used. %, 80% water-absorbing material 122
It is desirable to set the content to about 20% by weight. Substrate resin 12
When the content of 1 is less than 20% by weight, it is difficult to sufficiently suppress significant deformation and strength reduction due to water absorption swelling of the water absorbing substance 122 at high humidity, while the water absorbing substance 122 is
When the content of is less than 20% by weight, it is difficult to obtain a sufficient moisture absorbing / releasing function. Furthermore, the moisture absorptive and desorptive resin layer 12
The thickness of is also not particularly limited in the present invention, but considering the expression of a sufficient moisture absorbing / releasing function, the processability during manufacturing, the flexibility during handling, and the like, it is generally 10 to 100 μm.
It is desirable to set it within the range of about m.

The method for forming the moisture absorptive and desorptive resin layer 12 described above is not particularly limited in the present invention, but an oily coating liquid containing a hydrophobic organic solvent as a dispersion medium is generally used. Is. As the coating method, for example, knife coating method, nozzle coating method, gravure coating method, micro gravure coating method, rotary screen coating method,
Any conventionally known coating method such as reverse-rose coating method, comma coating method, lip coating method, die coating method, spray coating method, dip coating method, flow coating method can be adopted, and drying after coating each layer is possible. As a method, for example, a method of using a heat source such as hot air or an infrared heater, or a combination of a plurality of these heat sources can be appropriately adopted.

Further, in the present invention, the above-mentioned moisture absorptive and desorptive resin layer is provided not only on the slat base material but also on other constituent members of the blind, that is, on the surfaces of the head box 21, the bottom rail 24 and the like, if necessary. It may be provided.
With such a structure, it is possible to more efficiently absorb and dehumidify the humidity in the space near the window such as the window glass or the window frame sash where dew condensation easily occurs.

Further, the blind of the present invention may be provided with a pattern printing layer on the slats, if necessary, to impart a design property by the pattern. Further, in order to impart a three-dimensional design to the slats, it is possible to provide an uneven pattern processing by a mechanical embossing method or a chemical embossing method, or to provide a protective layer on the surface in order to improve the surface strength, It can be done arbitrarily.

[0021]

EXAMPLES The present invention will be described in more detail with reference to Examples and Comparative Examples of the present invention. <Example 1> First, a moisture absorbing / releasing resin composition having the following composition was applied on a flat plate (slat substrate) 11 made of aluminum having a thickness of 100 μm by a comma coat method and dried at about 90 ° C. to obtain a moisture absorbing / releasing resin. Set 12 was provided. The coating amount of the moisture absorptive and desorptive resin layer 12 after drying was about 20 g / m ² . (See FIG. 1) Next, in a state in which 30 slats 22 thus obtained are supported by ladder tapes 23 at a constant vertical interval, the upper part is on the head box 21, and the lower part is on the bottom rail 24. Each of them was attached with a ladder tape 23, and a head box 21 was incorporated in a part for raising and lowering, a blind as shown in FIG. 2 was produced, and it was attached to the upper frame portion of the window frame by its attachment metal fitting (not shown).

[0022] [Composition of moisture absorbing / releasing resin] Water-absorbing substance Urethane-based highly water-absorbing polymer 40 parts by weight Hygroscopic substance Colloidal synthetic silica 30 parts by weight Substrate resin Polyurethane 90 parts by weight

The resulting blind had no defects such as coating unevenness of the moisture absorptive and desorptive resin layer of the slat and had a good appearance and was no different from a general blind.

<Comparative Example 1> A blind according to Comparative Example 1 was produced under exactly the same conditions as in Example 1 except that the step of forming the moisture absorptive and desorptive resin layer of the slats was omitted.

Next, with respect to the product of the present invention, a commercially available ordinary blind [a product made of an aluminum flat plate having a thickness of 100 μm, which is the same as that of the embodiment of the present invention as a slat base material] and the blind of Comparative Example 1 were used, and A comparative test was conducted on the effect of preventing dew condensation on the surface of the window frame sash, etc. As a result, the occurrence of dew condensation was not seen in the window and the window frame to which the blind of Example 1 of the present invention was applied, whereas the window and the window to which the commercial blind and the blind of Comparative Example 1 were applied were commercially available. Dew condensation was found on the frame. From the above test results, it was confirmed that the product of the present invention has an excellent effect of preventing dew condensation occurring on windows and window frames.

<Test method for dew condensation prevention performance> Inner dimension is lateral direction 3
A room with a general wooden structure of 600 mm, 2700 mm in the vertical direction, and 2400 mm in height (the body is made of 100 mm thick wooden members, and gypsum board is pasted on the wall,
A general wallpaper is applied on the surface of the gypsum board, and 100 mm thick glass wool is put in the wall surface as a heat insulating material) in the lateral direction of the inner wall (3600 m).
800 mm wide and 1300 mm high at the center of the wall of m)
Window (a piece of aluminum frame material with glass included) was constructed, and each test blind was constructed on the upper surface of the window frame of the window. Next, the following test was performed in order to reproduce the overnight environment in winter where dew condensation is likely to occur. First, the environment inside the room was set to a temperature of 20 ° C. and a relative humidity of 50%, and the environment outside the room was set to a temperature of 10 ° C. and a relative humidity of 20%. Next, after confirming that no condensation has occurred on the window and the window frame, it takes 6 hours to set the environment outside the room at 10 ° C relative humidity 20% to 0 ° C.
The relative humidity was changed to 20%. During this period, it was visually observed whether dew condensation occurred on the windows and window frames in the room.

[0027]

As described in detail above, the blind of the present invention has at least one side of the slat base material of the blind, and preferably both sides (when the blind is closed, whichever side of the slat comes to the window side). That is, because the moisture-absorbing and desorbing resin layer is provided on the surface that comes to the window side when the blind is closed, the window and window frame can be used in the same form and usage as a conventional general blind. It has an excellent effect of preventing dew condensation. In addition, the blind of the present invention keeps a comfortable humidity especially in the indoor side, and locally keeps only the humidity in the space near the window such as window glass, window frame sash, etc., which is not the living space and easily causes dew condensation. It is possible to efficiently and efficiently absorb and desorb moisture. This means that even when a resident uses a humidifier or the like indoors for the purpose of preventing a cold or preventing the skin from drying, the blinds of the present invention are used even when a comfortable and moist living space is created. It is possible to cut off the space between the space and the window, and to efficiently absorb and release only the humidity in the space near the window, which in turn effectively prevents the formation of dew on the window glass, window frame sashes, etc. It shows that it can be prevented. Moreover, this blind absorbs moisture in the ambient air when the humidity is high,
On the other hand, it also has the function of softening the humidity change in the room by releasing the absorbed water when the humidity is low.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing a configuration of a slat that constitutes a part of a blind of the present invention.

FIG. 2 is an explanatory diagram showing a schematic configuration of a blind according to an embodiment of the present invention.

[Explanation of symbols]

11: Slat base material 12 ... Moisture absorbent resin layer 121 ... Substrate resin 122 ... Water-absorbing substance 123 ... Hygroscopic substance 21 ... Headbox 22 …… Slat 23 ... Ladder tape 24 ... Bottom rail 25 ... Lift code

Claims (3)

[Claims] 1. A blind characterized in that a slat base material of a slat constituting the blind is provided with a moisture absorptive and desorptive resin layer on at least one surface thereof. 2. The blind according to claim 1, wherein a layer of a moisture absorptive and desorptive material is provided on a surface of a blind constituent member other than the slat. 3. The blind according to claim 1, wherein the moisture absorbing / releasing resin layer contains a water absorbing substance and a moisture absorbing substance.