JPH0418533B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the creation of a sheet-like material with excellent heat retention effect, which can be used as a sheet-like material for forming various clothing or accessories by reflecting radiant heat and preventing heat radiation. The object of the present invention is to provide the above-mentioned material which has enhanced heat retention properties and is also waterproof and moisture permeable, thereby obtaining a product suitable for outdoor use.

It is well known that one of the basic properties required of clothing and equipment worn on the human body is a heat retention effect, and woven fabrics, knitted fabrics, etc. have been used for a long time for this purpose. However, the main purpose of these woven and knitted fabrics is to prevent heat conduction, and even if a certain degree of heat retention can be obtained by using separately prepared cotton, etc. As is well known, there is not only conduction heat but also radiant heat as the amount of heat dissipated from the body, and the heat dissipation prevention effect against this radiant heat is extremely poor. Therefore, in order to obtain the desired heat retention effect, the layer thickness and amount of sheet material must be increased, which increases costs and increases the weight of clothing, etc.
The mounting condition is also bulky, and workability and maneuverability are inevitably inferior.
It is generally known that the above-mentioned disadvantages are particularly noticeable in products used outdoors in winter or in cold regions.
Even if it is possible to obtain favorable cold protection effects, exercise and work will be extremely difficult, and the appearance and appearance will be extremely inferior. The purpose of this outdoor clothing is to quickly dissipate perspiration from the wearer, which makes exercise and work more refreshing, but conventional clothing such as the one described above can hardly achieve this purpose. Of course there is no such thing. Furthermore, for outdoor use, it is important to ensure waterproofness in case of encountering rain, etc., but conventional products that provide heat retention by forming a cotton layer as described above wastefully absorb moisture. There is a strong tendency to absorb
Furthermore, once water has been absorbed, it is extremely difficult to dry.

The present invention was created after repeated studies in view of the above-mentioned circumstances, and proposes to form a protective coating layer on the outer surface of a waterproof membrane piece and to form a radiant heat blocking layer on the inner surface. As the protective coating layer, general fabrics such as various fibers are used, and as the radiant heat blocking layer, aluminum or other highly glittering metal foils may be used, but metal powders thereof may be used. A material coated or vapor-deposited on a resin film, nonwoven fabric, etc. is used with its bright surface as the inner surface. Perforations are provided to provide moisture vapor permeability, especially when sweating.

A specific embodiment will be described with reference to the accompanying drawings. As shown in FIG. 1, the preferred material for the waterproof membrane piece 1 is one that also has moisture permeability, taking into consideration the comfort during exercise or work as described above. I prefer things,
As such a waterproof and moisture-permeable resin film, a stretched porous tetrafluoroethylene resin film having desirable characteristics has been developed and commercially available by the present applicant. However, even if the present invention is implemented as having this moisture permeability, it is of course not limited to the stretched porous tetrafluoroethylene resin film as described above, and other materials may be used. Laminated fabric of non-hydrophilic porous film,
Coding fabrics with non-hydrophilic porous layers (e.g. coated with non-hydrophilic polyacrylic resin etc.), laminate fabrics with water vapor permeable non-porous films (e.g. non-porous coated with hydrophilic polyurethane resin or hydrophilic fluororesin) Examples include a laminate fabric of a film), a coating fabric with a water vapor permeable non-porous layer (for example, a fabric coated with a porous layer of a hydrophilic polyurethane resin or a hydrophilic fluororesin), or other high-density fiber fabrics. It is clear that a wide variety of waterproof resin films can be used.

In order for the present invention to obtain a preferable barrier property with respect to conductive heat, the cotton layer 2 must be replaced with the above-mentioned waterproof membrane piece 1.
As the material for this cotton layer 2, it is possible to use a wide variety of commonly known animal/vegetable or synthetic fibers, and of course mixed cotton may also be used. Adopt formed cotton tissue material. The thickness is not particularly limited, but in view of the fact that the thickness of the conventional technology described above reaches around 5 mm or more,
The reason why the present invention is highly advantageous is that it has a comparatively thick camphor film layer (compared to the conventional method) of around mm or less. In other words, when the cotton layer thus formed into a thin film is used to form clothing using the material of the present invention, it is possible to obtain clothing that does not take up much bulk, and the thickness of the cotton layer is similar to that of conventional simple textiles or textiles. Obtain appropriate winter clothing.

The radiation heat insulating layer 3 is made of synthetic fiber or the like as a fiber material, and is made of a thin layer of non-woven fabric or reinforced paper that has been processed with resin to ensure sufficient toughness, and coated with aluminum powder, for example. In order to ensure high moisture permeability, perforations 5 are provided at predetermined intervals in the radiation heat insulating layer by means of needle punching or the like. As shown in the figure, the protective layer 4 is coated with a general synthetic fiber cloth on the outer surface. In cases where it is not preferable to provide perforations 5 to provide ventilation, a resin film is used as a carrier on which aluminum powder or the like of the radiant heat insulation layer 3 is applied or vapor-deposited, and the resin film is stretched. By doing so, fine fissures are formed in the film structure, and a film in which these fine fissures are evenly distributed is used. Although it is preferable to apply the powder such as aluminum after the above-mentioned stretching treatment, substantially the same result can be obtained even if the material coated with the aluminum powder is subjected to the stretching treatment.

The adhesion of the protective layer 4 and the radiant heat blocking layer 3 to the waterproof resin film 1 as described above, and the four layers consisting of the cotton layer 2 interposed between the waterproof resin film 1 and the radiant heat blocking layer 3 are as follows: In any case, they are integrated into a sheet-like material. These materials 1, 3, 4 or 1
Adhesion is generally used for the integration of items 4 to 4, and under conditions where synthetic resin materials are used to some extent, this adhesion is a method that uses heat fusing and adhesives. Either one or both may be used in combination. In cases where synthetic resin materials are melted and bonded by heating, the fused portion 6 is formed in points or in a line.
This is achieved by forming and adhering each layer, thereby ensuring overall breathability and moisture permeability. On the other hand, it goes without saying that adhesive bonding may be done over the entire surface, but even in this case, dotted or linear partial bonding may be used. In the case of a waterproof resin film 1 that also has moisture permeability, even if the adhesive is not moisture permeable, partial adhesion with a spacing of at least 0.1 mm or tens of mm in some cases may be used. In this case, it is possible to appropriately obtain moisture permeability as a whole. Adhesives that have moisture permeability even when bonding the entire surface have already been developed to a certain extent, and these can be used as appropriate.

It is clear that the material according to the present invention as described above is particularly preferable for forming clothing, and since it effectively blocks radiant heat, it prevents heat radiation from the human body even with a relatively thin layer of material, making it a desirable heat retaining material. It can improve the heat retention of clothes with excellent movement and workability, but it can also be used not only for clothes, but also for hats and other head cloths, accessories such as gloves,
Furthermore, it can be widely used for futons, awnings, curtains, and other interior furnishings. In particular, when used for indoor interiors such as awnings and curtains, the lighting effect is improved because it not only blocks radiant heat but also reflects light.

According to the present invention as explained above, it is possible to effectively reflect radiant heat, which has been almost ignored in conventional clothing, to prevent heat radiation and enhance the heat retention effect, thereby making it possible to improve the heat retention effect by using a relatively thin sheet-like material. This enables us to provide clothing and other items that exhibit the desired heat retention properties and are excellent in workability and exercise performance, as well as products that are pleasing in appearance, and are not only waterproof but also moisture permeable. By using the membrane piece, moisture is effectively released during sweating, etc., making it more comfortable to use, and this invention has great industrial effects.

[Brief explanation of drawings]

The drawings illustrate embodiments of the invention,
Fig. 1 is a cross-sectional explanatory diagram showing one example of the sheet-like material according to the present invention, Fig. 2 is a cross-sectional explanatory diagram showing another embodiment thereof, and Fig. 3 is a cross-sectional explanatory diagram showing another embodiment of the sheet material, and Fig. 3 is a cross-sectional explanatory diagram showing one example of the sheet-like material according to the present invention. FIG. 2 is a partially cutaway explanatory plan view. In these drawings, 1 is a waterproof membrane piece, 2 is a cotton layer, 3 is a radiation insulation layer, 4 is a protective layer, and 5 is a waterproof membrane piece.
6 indicates a perforation, and 6 indicates a bonded portion.

Claims (1)

[Scope of Claims] 1. A sheet-like material with excellent heat retention effect, characterized in that a protective coating layer is formed on the outer surface of a waterproof membrane piece, and a radiant heat blocking layer is formed on the inner surface of the waterproof membrane piece. 2. A sheet-like sheet with excellent heat retention effect according to claim 1, which uses a waterproof membrane piece that also has moisture permeability and has perforations in the radiant heat blocking layer to achieve moisture permeability. material. 3. A sheet-like material with excellent heat retention effect according to claim 1, in which a cotton layer is interposed between the waterproof membrane piece and the radiant heat blocking layer.