JPH0454313Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Industrial Application Field] The present invention relates to a new and useful anti-condensation sheet. More specifically, the present invention relates to a highly practical anti-condensation sheet comprising a specific hollow sheet directly or indirectly coated with a paint agent. This anti-condensation sheet according to the present invention is
It is mainly used as a dew condensation prevention sheet for glass windows such as aluminum sash windows. [Prior Art] General households are extremely concerned about condensation on glass windows during the winter, and the countermeasures are as follows:
There are various ways to do this, such as building double-paned windows, closing shutters, and using thick curtains. However, although the Naru method is highly effective, it is not easy to carry out and is expensive. However, the expected effects are insufficient and the method also has the drawback of lacking comfort in terms of lighting. In order to improve these drawbacks, for example, Japanese Utility Model Application Publication No. 55-59090 has a thin plate of synthetic resin that adheres closely to the glass surface. In other words, a dew condensation prevention device is disclosed that has a slit that communicates vertically or horizontally, or has a slit with its exit closed, and that has a structure in which a plurality of thin plates are stacked as required. Although it is true that such a structure can achieve its purpose in terms of preventing condensation, it does have the disadvantage of being easily scratched, as will be clear from the comparative example described later. . [Problems that the invention aims to solve] However, the inventors of the present invention believe that there are problems that are routinely overlooked or that they have had to put up with.
Recognizing the existence of the various problems mentioned above,
In addition, intensive research has begun in order to find an extremely practical solution that can be implemented at low cost and is highly effective. Therefore, the problems that the present invention aims to solve are, first of all, that it is simple and inexpensive to implement, and that there is no inconvenience in terms of lighting.
The object of the present invention is to provide a drastic solution to the problem of condensation on glass windows in winter, which is highly comfortable, scratch-resistant, and highly practical. [Means for solving the problems] Therefore, the inventors of the present invention set their sights on the problems that the above-mentioned invention is intended to solve, and
As a result of repeated studies, we decided to use a hollow sheet made of a specific transparent or translucent synthetic resin that is coated with a paint agent or coated with the paint agent in a layered manner to prevent dew condensation. They discovered that such dew condensation can be completely eliminated when applied to water, and have now completed the present invention. That is, the present invention consists of a specific transparent or translucent synthetic resin, which is firstly coated with a paint agent, and secondly, the paint coating product is laminated. It is an object of the present invention to provide a sheet for preventing dew condensation, which is a hollow sheet, has a thickness of 0.5 to 10 mm, and has a volume occupied by the hollow portion of 20 to 98% by volume. The present invention will be specifically explained below with reference to drawings showing an example of the dew condensation prevention sheet. FIG. 1 is a perspective view showing a part of a control anti-condensation sheet according to the so-called prior art without any coating treatment;
Further, FIG. 2 is a perspective view showing a part of the dew condensation prevention sheet according to the present invention, which is coated on both sides, and FIG. 3 is a perspective view of a film coated on one side. 1 is a perspective view showing a part of a dew condensation prevention sheet according to the present invention in a laminated form, each of which has a large number of parallel columnar hollow parts each having a rectangular cross-sectional shape. ing. In each figure, numeral 1 indicates a hollow sheet made of transparent or translucent synthetic resin, which is usually obtained by known and commonly used methods such as extrusion molding or lamination of films or sheets. It is. 2 in each figure has a rectangular cross-sectional shape (l x w)
It shows a columnar hollow part, and
3 in FIGS. 2 and 3 both indicate coated paint layers, and 4 in FIG.
is a transparent or translucent film laminated on the hollow sheet 1 and having a coating layer. FIG. 4 is a plan view of a hollow sheet in which the hollow portion has a tortoise-shell shape, and FIG. 5 is a sectional view taken along line A-A' in FIG. 4. 5 and 5' in FIG. 5 indicate sheets made of transparent or translucent resin, and 6 in FIGS. 4 and 5 respectively partition a tortoise shell-shaped hollow part. , indicates a sheet made of transparent or translucent resin, and 7 is a sheet made of 5, 5' and 6, or one sheet 6 and another sheet 6, respectively, with an adhesive. This figure shows the tortoiseshell-shaped hollow part in the hollow sheet that was bonded together. As the above-mentioned transparent or translucent synthetic resin used in the present invention, any known and commonly used resin can be used as long as it meets these conditions, but among them, particularly representative If I limit myself to illustrating only the
polycarbonate, polymethyl methacrylate,
Polyvinyl chloride, acrylonitrile-ethylene
These include styrene copolymer (AES resin), acrylonitrile-styrene copolymer (AS resin), acrylic-acrylonitrile-styrene copolymer (AAS resin), polystyrene, polyethylene, or polypropylene. Among these, polycarbonate and polymethyl methacrylate are particularly suitable because they have excellent optical properties, heat resistance, impact resistance, and the like. The thickness of the hollow anti-condensation sheet according to the present invention is normally within the range of 0.5 to 10 mm, and is selected and used as appropriate depending on the desired effect. From the viewpoint of fully expressing the effect and not hindering the opening and closing of windows and glass doors, it can be said that a range of 2 to 7 mm is appropriate. The volume of the hollow portion in the anti-condensation sheet of the present invention is usually 20 to 98% by volume, preferably 50% by volume.
A range of ~85% by volume is appropriate. If the volume occupied by the hollow portion is less than 200% by volume, it will be difficult to obtain a sufficient effect of preventing condensation, while if it exceeds 98% by volume, the strength of the sheet will inevitably decrease. Either case is not preferable because it becomes easier. The shape of such a hollow part is not particularly limited; for example, it may be a polygon in a plan view, or may be a collection of large and small circles, or may be any arbitrary shape. There is no problem even if it is columnar with a cross-sectional shape, and it can be arbitrarily selected from various shapes, including design factors, but in particular,
If the shape of this hollow part is columnar, the cross-sectional area within the range of 1 to 50 ^cm2 is
In the case of other shapes, it is preferable that the individual volumes be in the range of 0.5 to 5 cm ³ to prevent air convection. As mentioned above, the anti-condensation sheet of the present invention has the following features:
One of the requirements is to coat one or both sides with a coating agent that has excellent abrasion resistance, or to laminate a film coated with the coating agent. The aim is to maintain the transparency and aesthetic appearance of the sheet over a long period of time. Of course, colored or matte-treated films can also be laminated. Here, examples of coating materials include acrylic lacquer, two-component acrylic urethane paint, or electron beam curable paint (UV curable paint). From the standpoint of impact resistance and scratch resistance, coating with UV-curable paint is particularly desirable. In addition, when coating with these paints, transparent colored paints, matte paints, etc. can also be used as necessary. The dew condensation prevention sheet of the present invention is used by being laminated on the surface of parts that are prone to dew condensation, such as windows, glass doors, or vinyl houses, but the lamination method is not particularly limited and is known in the art. A typical method is to appropriately laminate them using a conventional adhesive or double-sided adhesive tape. [Effects of the invention] The dew condensation prevention sheet of the present invention can prevent dew condensation without impairing daylighting by simply laminating it on the surface of areas where dew condensation is likely to occur, such as windows, glass doors, or vinyl houses. It also improves insulation properties, which in turn can reduce heating costs.Furthermore, the dew condensation prevention sheet of the present invention itself is lightweight and has excellent abrasion resistance. It has various advantages such as being hard to get scratched. [Example] Next, the present invention will be explained in more detail with reference to drawings, examples and comparative examples, but these are merely illustrative and do not impose any restrictions on the present invention. None. Comparative Examples 1 to 3 These examples are for cases where no coating treatment with a paint agent has been performed, that is, there has been no coating treatment with a paint agent, and the product coated with the paint agent. This shows the state of the hollow sheet itself, with no layering. A condensation prevention sheet made of polycarbonate having the dimensions (L, l, W, and w) shown in Table 1 and the shape shown in Figure 1 was prepared, and the thickness of the aluminum sash window was 2 mm and 20 cm. It was pasted on a 20cm x 20cm glass surface using double-sided adhesive tape, fixing the four corners, and then exposed for 1 hour under each condition (outside temperature, indoor temperature, and indoor humidity) as shown in the table. After observing the state of dew condensation, no dew condensation was observed, but it is natural that they were easily scratched by the steel wool wiping.

【table】
I can't do it

×...Examples 1 to 3 in which scratches were observed. These examples show cases in which one side of the anti-condensation sheet is coated with a paint agent, that is, on another side of the anti-condensation sheet that is not in contact with the glass surface. This is about an anti-condensation sheet coated with UV-curable paint. That is, on a polycarbonate anti-condensation sheet having the dimensions and shape of Comparative Examples 1 to 3, that is, on another surface of the sheet that is not in contact with the glass surface, "Uniday Co., Ltd." as a coating agent was applied.
17-824" [UV curable paint manufactured by Dainippon Ink and Chemicals Co., Ltd.] was applied to a film thickness of 5 to 10 microns after drying, and heated with a high-pressure mercury lamp of 80 W/cm. It is obtained by having a coating layer on the indoor surface that is cured by UV irradiation for seconds.
An anti-condensation sheet having dimensions (L, l, W, and w) approximately as described above was produced. Next, Comparative Examples 1 to 3 were carried out in the same manner as in Comparative Examples 1 to 3, except that the thus obtained coated anti-condensation sheets were used, and of course, no condensation was observed in any of them. I couldn't help it. Not only that, but of course, even after wiping with steel wool, no scratches were found. In this way, when coating treatment with a paint agent is applied, an advantage is brought about that it is hard to be scratched. Examples 4 to 6 In these examples, both sides of the sheet were coated with a paint, that is, both sides of the anti-condensation sheet were coated with a UV-curable paint.
This is a so-called all-plastic anti-condensation sheet. That is, "Unidik 17-
824'' to a film thickness of 5 to 10 microns after drying, and using a high-pressure mercury lamp of 80W/cm,
Roughly, it is obtained by having a coating layer on both sides that is cured by UV irradiation for 2 seconds.
An anti-condensation sheet having the above dimensions (L, l, W and w) and having a structure as shown in FIG. 2 was produced. Next, Comparative Examples 1 to 3 were carried out in the same manner as in Comparative Examples 1 to 3, except that the thus obtained coated anti-condensation sheets were used, and of course, no condensation was observed in any of them. I couldn't help it. Not only that, but of course, even after wiping with steel wool, no scratches were found. Moreover, once again, it is extremely lightweight.
It goes without saying. In addition, it goes without saying that there is no damage or cracks. Examples 7 to 9 In these examples, a hollow sheet in which paint coatings are laminated is used as a dew-preventing sheet. That is, a blue-colored, transparent polyethylene terephthalate film with a thickness of 0.1 mm is laminated onto a hollow sheet, and then, on one side of the thus obtained laminate, that is, on the side not in contact with the glass surface, "Unidaytsuk 17-824",
Paint so that the film thickness after drying is 5 to 10 microns, and apply it for 2 seconds using a high-pressure mercury lamp of 80W/cm.
It was cured by UV irradiation to produce an anti-condensation sheet having approximately the dimensions (L, l, W, and w) as described above. Next, Comparative Examples 1 to 3 were carried out in the same manner as in Comparative Examples 1 to 3, except that the thus obtained coated anti-condensation sheets were used, and of course, no condensation was observed in any of them. I couldn't help it. In addition, the aluminum sash windows were painted blue and were beautiful.

[Table] Thus, it can be seen that according to the present invention, aesthetic effects can also be achieved. Not only that, but of course, even after wiping with steel wool, no scratches were found. In this way, when coating treatment with a paint agent is applied, an advantage is brought about that it is hard to be scratched.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a part of a conventional dew condensation prevention sheet, and FIG.
Each of the figures is a perspective view showing a part of a dew condensation prevention sheet having a columnar hollow part according to the present invention, and FIG. FIG. 5 is a plan view showing a part of the prevention sheet, and FIG. 5 is a cross-sectional view taken along line A-A' in FIG. 4. Each number in the figure is as follows. DESCRIPTION OF SYMBOLS 1... Hollow sheet, 2... Column-shaped hollow part, 3... Coating layer, 4... Film, 5 and 5'... Sheet,
6... Sheet that partitions the hollow part of the turtle's shell, 7...
The hollow part of a turtle's shell.

Claims (1)

[Scope of utility model registration request] A hollow sheet made of transparent or translucent synthetic resin, coated with a paint agent on one or both sides, or with a layered coating treated with the paint agent, and having a thickness of 0.5 to 10 mm,
Furthermore, the anti-condensation sheet is characterized in that the volume occupied by the hollow portion is 20 to 98% by volume.