JPH0428752Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a plastic molded article with high infrared radiation.

(Prior Art and Problems) Conventionally, infrared rays are often used to heat objects at high temperatures. There are infrared kotatsu, infrared heating furnaces, etc., but these use so-called infrared lamps, which are mainly near-infrared rays and most of the energy is visible light, so they are not energy efficient.

Until recently, it has been thought that objects that radiate infrared rays must themselves be heated to high temperatures. On the other hand, although it is known that objects emit far-infrared rays at certain temperatures, they are weaker than far-infrared rays emitted at high temperatures, and their utility value is not recognized and it is unlikely that they will be used. Ta.

As a result of various studies, the present inventor discovered that far-infrared rays emitted from relatively low-temperature objects close to room temperature have various effects, and arrived at the plastic molded article of the present invention for the efficient use of far-infrared rays.

(Means for Solving the Problems) The present invention is a plastic molded product having a far-infrared radiation layer on at least the surface portion.

The far-infrared radiation layer contains one or more substances selected from the group consisting of zirconium oxide, cobalt oxide, iron oxide, manganese oxide, copper oxide, titanium oxide, silicon oxide, chromium oxide, and aluminum oxide. Efficient and recommended. These materials can be made into enamel by firing, but since the present invention uses them in combination with plastics, they are used in the form of fine powder.

In the present invention, these substances may be mixed with the plastic, or a mixture of fine powder of these substances and a binder may be provided on the surface. In this case, it goes without saying that the mixture layer of the fine powder of this substance and the binder need not be provided on the entire surface of the molded article, but may be provided on a portion of the surface. It may also be protected by a transparent plastic layer thereon.

The shape of the plastic molded product is not particularly limited, and the present invention can be applied to various molded products, but it is preferable to use basic shapes such as films and brittle because the molded product can be used in a wide range of applications.

The zirconium oxide, cobalt oxide, iron oxide, manganese oxide, copper oxide, titanium oxide, silicon oxide, chromium oxide, and aluminum oxide used in this invention have excellent far-infrared radiation efficiency, and each alone can provide sufficient far-infrared radiation. Although they have high infrared radiation efficiency, they can also be used in combination, and by mixing a small amount of special additives, it is also possible to provide a highly efficient radiation rate. Regarding these compositions, see, for example, JP-A-56-88875, 56-114866, 56-114867,
Known techniques related to far infrared radiation such as No. 58-64257 and No. 58-167483 can be applied. When these substances are used in the present invention, they are used in powder form,
Although the particle size is not particularly limited, it is preferable to grind it finely to 5 to 100 μm if possible. Since this substance is an oxide of a metal element and is a chemically inert substance, there are no restrictions on the type of plastic used in this invention, and various commercially available plastics can be used. You can choose one depending on your purpose. General purpose polyethylene, polystyrene, polypropylene, vinyl chloride, AS
Resin, ABS resin, etc. can be used, and when using at slightly high temperatures, nylon, polyester, etc. can be used, and when strength is required, plastics such as polyacetal, liquid crystalline polyester, and polyimide resin can be used. You can judge based on common sense.

Each embodiment of the present invention will be described below.

Embodiment (1) is as shown in FIG. 1, in which one or more of polyethylene is selected from the group consisting of zirconium oxide, cobalt oxide, iron oxide, manganese oxide, copper oxide, titanium oxide, silicon oxide, chromium oxide, and aluminum oxide. 1 is a schematic cross-sectional view of a film 2 formed by mixing fine powders 1 of the following substances. The surface of this film forms a far-infrared radiation layer.

This film can be formed into bags using conventional methods.

Embodiment (2) is a polypropylene film 3 whose surface is treated with corona discharge to give adhesive properties as shown in Fig. 2.
fine powder 4 of one or more substances selected from the group consisting of zirconium oxide, cobalt oxide, iron oxide, manganese oxide, copper oxide, titanium oxide, silicon oxide, chromium oxide, and aluminum oxide, and acrylic paint Vekhil. 5 is a schematic cross-sectional view of a product obtained by coating and drying a mixture of 5 and 5. A layer of mixture of fine powder 4 and acrylic paint vehicle 5 forms a far-infrared radiation layer. This product could also be formed into a bag in the same manner as in embodiment (1).

Embodiment (3), as shown in Figure 3, is a polypropylene film whose surface has been given adhesive properties by corona discharge treatment, and is coated with zirconium oxide, cobalt oxide, iron oxide, manganese oxide, copper oxide, titanium oxide, silicon oxide, chromium oxide, and oxide. Of the aluminum, black iron oxide, manganese oxide, etc., and white zirconium oxide, titanium oxide, aluminum oxide, etc., were made into black ink and white ink, respectively, and a panda's face was printed on them. 10 is printed with white ink. If other colors are required, use white as a base and add regular pigments to color the ink, adjust the printing ink for each color, and print on the film. A layer printed with these inks forms a far-infrared radiation layer.

Although the embodiment has been described above in the case of a film, it goes without saying that the same applies even if the form of the molded product changes.

Regardless of which embodiment is adopted, far infrared rays are emitted from particles of the substance relatively close to the surface.

(Effects of the invention) Since the plastic molded article of the present invention has the above-described configuration, far-infrared rays corresponding to the temperature thereof are efficiently emitted from the far-infrared radiation layer on the surface. As a result of irradiating the contents with far infrared rays, the contents can be kept fresh due to the sterilization effect of far infrared rays. When used in the inner bag of a heat/cold storage package that is transported by transport, the storage period including the transportation period was approximately doubled. It was also found that when radish was grown using the plastic molded product of the present invention, for example, in trays, its growth was promoted. For example, when used in disposable plastic packaging bags, it has the advantage of being extremely easy to use, as in addition to mere heat conduction, it also radiates far infrared rays, resulting in efficient heating. This makes it possible to make far-infrared rays, which have traditionally been of limited use, extremely familiar.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view of a film according to an example of the present invention;
FIG. 2 is a schematic cross-sectional view of a film according to another example of the present invention, and FIG. 3 is a plan view of a film according to still another example of the present invention. 1... Fine powder, 2... Film, 3... Polypropylene film, 4... Fine powder, 5... Paint vehicle, 6, 7, 8... Black ink, 9, 10...
...white ink.

Claims (1)

[Claims for Utility Model Registration] (1) A plastic molded product having a far-infrared radiation layer on at least the surface portion. (2) Practical use in which the far-infrared radiation layer contains one or more substances selected from the group consisting of zirconium oxide, cobalt oxide, iron oxide, manganese oxide, copper oxide, titanium oxide, silicon oxide, chromium oxide, and aluminum oxide. A plastic molded product according to claim 1 of the patent registration claim. (3) The far-infrared radiating layer is a fine powder of one or more substances selected from the group consisting of zirconium oxide, cobalt oxide, iron oxide, manganese oxide, copper oxide, titanium oxide, silicon oxide, chromium oxide, and aluminum oxide. A plastic molded article according to claim 1 or 2 of the utility model registration claim, which is comprised of a layer comprising: (4) The far-infrared radiation layer is made of plastic made of one or more materials selected from the group consisting of zirconium oxide, cobalt oxide, iron oxide, manganese oxide, copper oxide, titanium oxide, silicon oxide, chromium oxide, and aluminum oxide. The plastic molded product according to any one of claims 1 to 3, which is a surface portion of a whole mixed product. (5) One or more materials selected from the group consisting of zirconium oxide, cobalt oxide, iron oxide, manganese oxide, copper oxide, titanium oxide, silicon oxide, chromium oxide, and aluminum oxide, with a far-infrared radiation layer provided on a part of the surface. 4. A plastic molded article according to any one of claims 1 to 3, which has a layer of a mixture of fine powder of two or more substances and a binder on its surface. (6) One or more materials selected from the group consisting of zirconium oxide, cobalt oxide, iron oxide, manganese oxide, copper oxide, titanium oxide, silicon oxide, chromium oxide, and aluminum oxide, with a far-infrared radiation layer provided on a part of the surface. Utility model registration claim 1 which is a mixture layer of fine powder of two or more substances and a binder
The plastic molded article according to any one of items 1 to 3. (7) The plastic molded article according to any one of claims 1 to 6, which has a transparent plastic layer on the far-infrared radiation layer. (8) The plastic molded product according to any one of claims 1 to 7 of the utility model registration claim, wherein the plastic molded product is a film. (9) The plastic molded article according to any one of claims 1 to 7 of the utility model registration claim, wherein the plastic molded article is a bristle.