JPH0410039Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to the invention of a heat insulating material, which has excellent heat insulation and heat retention effects, hardly causes condensation even when used in braces in cold regions, and has appropriate flexibility and can be used in various types. The purpose of this invention is to obtain a heat insulating material that can be formed into a specific shape and that can provide a product with excellent durability.

It has been generally known for a long time that various metal flakes and metal plated objects with metallic luster reflect light rays and have a heat retention effect by blocking radiant heat, and they are also used as appropriate. As a metallic lustrous substance, aluminum has the advantage of being easy to process, stable and inexpensively available, and is used in various forms such as aluminum foil, aluminum scales, and aluminum vapor deposited layers. . Among these, aluminum foil, polyester or polyolefin films with aluminum vapor-deposited, and aluminum paints made by mixing and dispersing aluminum powder in alkyd resin or polyester resin paste have sufficient heat-retaining effects but are not transparent. Since it does not have a moisturizing function, its use must be restricted in fields that require moisture permeability during sweating and the like.
For example, insulation materials for construction materials that use aluminum foil cannot avoid condensation due to temperature fluctuations or temperature differences between indoors and outdoors, which can shorten its service life or cause stains, which can impair its appearance. This will be undesirable. For this reason, it seems that studies are being carried out on making holes in moisture-impermeable materials such as the above-mentioned foil pieces by punching, etc., to make them moisture permeable. It is necessary to increase the number of pores and the pore area ratio per unit area, and doing so will inevitably impair the heat ray reflection performance and reduce the heat retention property, and the strength will also deteriorate. I don't get it. In addition, in cases where a coating film is formed using a resin solution containing aluminum powder, a pore-forming agent is mixed with the solution and the pore-forming agent is extracted or volatilized after film formation to create a microporous structure. It has also been proposed that the micropores formed by volatilization or extraction are made to penetrate in the thickness direction. The resin structure does not have sufficient strength, and if an attempt is made to obtain appropriate moisture permeability by increasing the number of micropores as described above, the strength and elongation will inevitably decrease significantly. In other words, even though it may be theoretically possible to obtain moisture permeability with these conventional products designed to reflect radiant heat, it is not easy to ensure desirable moisture permeability in practice. For applications where it is difficult to maintain satisfactory and effective strength and therefore require reasonable tensile strength and moisture permeability, preferred heat retention materials with radiant heat reflectance as described above may be used. Hard to find.

The present invention was devised after repeated studies in view of the above-mentioned circumstances, and is characterized by integrally forming a moisture-permeable heat reflective layer by adhering it to one side of a moisture-permeable sheet material. This paper proposes a heat insulating material, and as the moisture permeable sheet material as mentioned above, synthetic resin film materials etc. that have been made into a moisture permeable structure through stretching processing can be used. As the heat-reflecting layer, a layer formed by layering aluminum scale-like pieces with a moisture-permeable resin binder, or an aluminum vapor-deposited layer can be used.

To explain the specific embodiment of the present invention shown in the attached drawings, as shown in FIG. A moisture-permeable heat reflective layer 1 is formed on the surface of a resin film 2 having a structure such as that of a moisture-permeable resin containing aluminum scales or a moisture-permeable heat reflective layer 1 formed by aluminum vapor deposition. , porous polytetraethylene resin, open-pore polyurethane foam, etc. can be used.

As shown in FIG. 2, a reinforcing cloth 3 such as a reinforcing cloth or knitted cloth can be adhered to the back surface of the moisture permeable resin film 2 as described above.
It is a matter of course that such a reinforcing fabric is a woven or knitted structural material made of threads or fibers and can ensure moisture permeability.

In addition, regarding the materials that can be made into fibers through the above-mentioned stretching process to achieve moisture permeability, we have developed materials such as polytetrafluoroethylene resins that have sufficient moisture permeability and are also waterproof. Gore-Tex is already commercially available under a trade name such as Gore-Tex, and it is clear that this material can be used effectively, but in cases where such waterproofness is not required, the above-mentioned reinforcing fabric A woven fabric or knitted fabric similar to 3 can also be used as the moisture permeable sheet material 2.

Furthermore, in the case of a cover material that does not require perfect radiant heat reflection, a discontinuous moisture-permeable heat-reflecting layer 1a is formed on the moisture-permeable resin film 2 by the stretching process described above, as shown in FIG. can do. Of course, the reinforcing cloth 3 can be bonded to this material as shown in FIG. Further, as shown in FIG. 6, the reinforcing cloth 3 can also be used as the moisture permeable sheet material 2.

Specific usage examples of the above-mentioned heat insulating materials shown in FIGS. 1 to 6 are shown in FIG. 7 and subsequent figures. That is, the one in FIG. 7 uses the above-mentioned heat insulating material 11 of the present invention between the batting 6 and the outer skin 7, and the heat insulating material 11 is also used in the futon outer layer 7 as shown in FIG. Can be applied to only one side. That is, in any case, such a futon can be obtained as a futon that utilizes heat ray reflection by the moisture-permeable heat-reflecting layer 1 or 1a, and therefore can be obtained as a futon that is excellent in heat retention.

It is clear that the items in Figures 7 and 8 can be used for both mattresses and comforters, but
It can also be used as cushions, seat cushions, etc. In these cases, the moisture-permeable heat reflective layer 1 as described above can be appropriately reinforced and integrated with a moisture-permeable resin film 2 or reinforcing cloth 3. Because it has a flexible structure and preferable flexibility, the filling layer 6 and the like can be appropriately matched to form a favorable curved state that adapts to the body shape of the user, while effectively achieving heat reflection and moisture transmission.

The device according to the present invention can also be used as bedding such as futons as described above, or as a cover for a lying body, and is particularly useful since it is similar in form to the ones in Figures 7 and 8. Although not shown in the drawings, the same effects as those explained with reference to FIGS. 7 and 8 can be obtained by using the cover as a cover for bedding or a bed body formed by a conventional method.

FIG. 9 shows an embodiment in which the heat insulating material of the present invention is used as a sleeping bag. Alternatively, a lining layer 17 is formed via a heat retaining layer 16 made of synthetic fiber cotton, and the heat ray reflecting layer 1 as described above effectively prevents heat loss due to radiation of radiant heat rays, and also appropriately absorbs moisture radiated from the body. Let it pass through.

Figure 10 shows a case in which gloves are formed by utilizing the above-mentioned heat insulating material, which has a preferable strength in a fibrillated structure obtained by stretching, and also has flexibility as well as heat retention and moisture permeability due to heat ray reflection. The heat insulating material 1
A glove is formed by adhering an outer skin 12 to the glove 1, if necessary, and also adhering a batting layer 13 and a lining cloth 14. The heat insulating material 11 according to the present invention, which has both strength and flexibility, can sufficiently withstand such complicated processing, forming, adhesion, and sewing as gloves.
Furthermore, sweat from the hands and fingers can be effectively discharged, and heat ray reflection can also be utilized, resulting in a product with high heat retention.

Figures 11 and 12 show the case where the heat insulating material 11 according to the present invention is used inside the outer skin 21 of a shoe. Using adhesive tape 22,
A skin 21 is attached to a hole 23 formed in the upper edge part, and the one shown in FIG. In either case, the heat insulating material 11 according to the present invention has both strength and flexibility, and is also stretchable. Because it has a certain amount of properties, it can form a desirable shoe that adapts well to both the outer layer 21 and the middle layer 25, and has accurate properties such as effective heat retention, moisture permeability, and even waterproofness. It can be finished as equipped.

It is clear that the present invention can be applied not only to shoes or gloves as described above, but also to general equipment such as head cloths, socks, or tabi socks.

In the case of the present invention as described above, since the moisture-permeable heat reflective layer is bonded to one side of the moisture-permeable sheet material and is integrally formed, it can quickly dissipate sweat and provide comfortable bedding or braces. In addition, it is possible to provide a product with an excellent heat retention effect by reflecting heat rays by the heat reflecting layer, and it is also possible to use a waterproof material made of a stretched material as the sheet material, and It has the effect of being able to appropriately manufacture various advantageous products that utilize those characteristics, since it is possible to adopt products that effectively have flexibility and strength, etc.
This is a highly effective idea in practical terms.

[Brief explanation of the drawing]

The drawings show embodiments of the present invention. Figures 1 to 6 are enlarged cross-sectional views of some examples of heat insulating materials according to the present invention, and Figures 7 and 8 show the case where the invented product is used as a futon. Figure 9 is a cross-sectional view of the shoes made into shoes, Figure 10 is a cross-sectional view of the gloves made into gloves, and Figures 11 and 12 show the state in the middle of manufacturing when made into shoes. It is a slope view. In these drawings, 1 and 1a are moisture-permeable heat reflective layers, 2 is a moisture-permeable resin film, and 3 is a reinforcing cloth.

Claims (1)

[Claims for Utility Model Registration] 1. A heat insulating material characterized by being integrally formed by adhering a moisture permeable heat reflective layer to one side of a moisture permeable sheet material. 2. The heat insulating material according to claim 1, which is a sheet material made of a synthetic resin film material stretched to have moisture permeability. 3. The heat insulating material according to claim 1, which has a moisture-permeable heat reflective layer formed by layering small aluminum scale pieces with a moisture-permeable resin adhesive. 4. The heat insulating material according to claim 1 of the utility model registration, in which the moisture permeable heat reflective layer is formed of a vapor-deposited layer of aluminum.