JPS584046A - Prevention of dewing of inner wall of room - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for preventing dew condensation on interior walls of structures such as houses.

It is a well-known phenomenon that condensation on the indoor walls of a building can occur not only when the indoor humidity is high and the indoor temperature is lowered by cold outdoor air passing through the walls, but also due to indoor air conditioning. be.

This condensation wets indoor walls and causes corrosion of wooden parts, which is undesirable. Therefore, efforts are being made to improve the insulation of the walls of structures, such as attaching woven fabric (cloth) to indoor walls, and improving the internal structure of walls. In addition, other countermeasures have been taken, such as controlling indoor humidity by installing dehumidifiers.

However, the above-mentioned cloth pasting has a limit in terms of its thickness in terms of its thickness, and dew condensation phenomenon is often observed. In addition, improvements to the internal wall structure, such as widening the space and filling with glass wool, etc., are considered to be one of the problems, as they may cause issues with the installation area of the structure, and moisture may remain in the glass wool, causing corrosion inside the wall structure. Therefore, neither of these measures can be considered as a sufficient measure to improve insulation against dew condensation.

Moreover, the dehumidifying device is not a good method because it requires complicated installation work.

The present inventors focused on these points, and as a result of intensive research into preventing dew condensation, they discovered that dew condensation can be sufficiently and easily prevented by attaching a special laminate to the indoor wall surface. It has been completed.

The present invention will be explained in detail below.

A laminate is made by laminating organic or inorganic natural fibers and synthetic fiber nonwoven fabrics with a thermoplastic synthetic resin film interposed in between.

There are no particular restrictions on the fibers that make up the nonwoven fabric, but it is natural that brittle fibers are undesirable for housing, so those with some degree of strength are selected, but particular consideration should be given to whether or not they have water absorption and water repellency. There's no need to. Typical fibers used in the present invention are cotton, wool, polyester, polyacrylonitrile, polyvinyl alcohol, nylon, etc., but the fineness is not particularly limited as it is sufficient to control the texture. do not have.

On the other hand, as the thermoplastic synthetic resin film, polyethylene, polypropylene, polyvinyl chloride, etc. are the easiest to use, and are placed between the nonwoven fabrics and are fully or partially bonded by a hot roll or high frequency bonding device, or a thermal bonding device using impulse current. will be held.

In this case, if the nonwoven fabric is too thick, the outermost surface is likely to be raised, which is substantially undesirable. Also, if it is too thin, it will not be good for heat insulation and dew condensation prevention, so a thickness of 2 to 10 mm, preferably 4 to 8 mm, is selected.

Further, the thermoplastic synthetic resin film may be a non-porous film or a film having a large number of holes. When a large number of films are used, the dew condensation prevention property is even better.

By attaching the laminate having the above structure to the wall surface of the structure, almost no condensation was observed on the indoor side.

The reason for this is probably due to the improved heat insulating properties as mentioned above, but it is also thought that the fact that condensation is difficult to form due to the significantly expanded surface area, which is unique to nonwoven fabrics, is thought to be a major contributing factor.

The present invention has been described in detail above, but the gist of the present invention is an indoor wall condensation prevention method in which a laminate obtained by laminating and bonding a plurality of nonwoven fabrics via a thermoplastic synthetic resin sheet is attached to the inner wall of a structure.

Next, the present invention will be explained using examples.

Low-density polyethylene film 2 approximately 30 microns thick
Three sheets of nonwoven fabric made of polyester fibers having a thickness of approximately 6 mm were laminated and thermally bonded. Note that the polyethylene film was provided with holes with a diameter of about 3M at a ratio of 1 hole/10 crn2. This laminate was attached to the interior wall of a wooden house sprayed with ricin, and compared with the case of attaching vinyl leather. During the relatively humid period from June to August, small water droplets often appeared on the vinyl leather surface, but in the case of the above-mentioned example, which was performed using the method of the present invention, there were no water droplets at all. I got a good feeling.

Patent applicant: Showa Denko Co., Ltd. Agent Sei Kikuchi −, 2〉

Claims (2)

[Claims] (1) A method for preventing condensation on indoor walls, which is characterized by attaching a laminate obtained by laminating and adhering a plurality of nonwoven fabrics via thermoplastic synthetic resin sheets to the inner wall of a structure. (2) A method for preventing condensation on an indoor wall according to claim 1, wherein the thermoplastic synthetic resin sheet is a sheet having a large number of ventilation holes.