Patent Application
20130221762
1. Field of the Invention
The present invention relates to an isolation device, and in particular to an electromagnetic wave isolation device capable of blocking electromagnetic waves efficiently.
2. Description of Prior Art
Since there are various electronic appliances used in our daily life, electromagnetic waves surround our environment. Although there is still no research reports to prove that electromagnetic waves are harmful to human bodies, a research made by Savitz et. al of the University of North Carolina in 1983 shows that a baby exposed to a magnetic field of 60 Hz for a long period of time or wrapped by an electric blanket suffers from cancer 1.3 times than ordinary babies and suffer from leukemia cancer or brain tumor 2.5 than ordinary babies. Further, in 1987, Savitz et al. of the University of North Carolina indicate that radiobroadcasters and radar operators are in more danger to suffer from leukemia cancer than ordinary people.
According to the United Daily News on 5 Apr. 2000, British Customer Association indicates in “Which” magazine that: people who use hand-free handset is exposed to a magnetic filed three times than people who use a mobile phone directly. Sometimes, excessive magnetic waves make people uncomfortable and people may thus suffer from various morbid changes. Such a phenomenon becomes more serious when people use a mobile phone. Thus, some scholars think that electromagnetic waves are really harmful to human bodies. Further, the degree of hazard of the electromagnetic waves to a human body is in proportion to the time period during which he/she is exposed to.
In addition to the mobile phones, computers, television sets and even electric fans can generate electromagnetic waves in our daily life. The conventional electromagnetic wave isolation device is designed as an electromagnetic wave isolation patch which can be adhered to a person using a mobile phone. Such an electromagnetic wave isolation patch is made of an electric-conductive rubber or metallic piece to thereby generate an effect of blocking electromagnetic waves. However, the electric-conductive rubber has a larger cost, and thus it is not suitable to be formed as a large-sized patch. On the other hand, since the electric-conductive rubber is rigid and not air-permeable, the user will feel uncomfortable when in use and the sound of the mobile phone penetrating the electric-conductive rubber is smaller. Thus, the practicability of such a conventional electromagnetic wave isolation device is limited.
In order to solve the above problems, an objective of the present invention is to provide an electromagnetic wave isolation device including an isolation layer, a first substrate layer and a second substrate layer.
The isolation layer has a first surface and a second surface. The isolation layer is doped with a plurality of metallic particles. The first substrate layer is adhered to the first surface of the isolation layer. The second substrate is adhered to the second surface of the isolation layer.
The present invention has the following advantageous features. Since the isolation layer is doped with a plurality of metallic particles, these metallic particles form a protection net for blocking electromagnetic radiation and electromagnetic waves. Further, the electromagnetic wave isolation device can be formed into a piece of various shapes. In this way, the product cost of the electromagnetic wave isolation device is reduced. The practicability of the present invention is increased. Further, the first substrate layer and the second substrate layer can be printed with patterns, which increases the aesthetic and decorative effects of the present invention.
The features and technical contents of the present invention will be described in more detail with reference to two preferred embodiments thereof shown in the accompanying drawings.
Please refer to
The isolation layer 31 has a first surface 311 and a second surface 312 opposite to the first surface 311. The isolation layer 31 is doped with a plurality of metallic particles 313. In the first embodiment, the isolation layer 31 is made of a material selected from polyethylene terephthalate (PET), polyethylene (PE), oriented polypropylene (OPP), corrugated polypropylene (CPP), glues, lacquer, foamed plastic and compounds thereof. The metallic particles 31 are selected from steel, polished metal, Fe, Co, Ni, any metals that can be magnetized, and powder of the mixtures thereof.
The first substrate layer 32 is adhered to the first surface 311 of the isolation layer 31. The second substrate layer 33 is adhered to the second surface 312 of the isolation layer 31. In the first embodiment, the first substrate layer 32 and the second substrate layer 33 may be made of fibers, leather or nonwoven fabrics.
In practical manufacturing, Fe, polished metal, or other metals are grounded into tiny particles. Then, the tiny particles are mixed with glues or lacquer to form a mixture. The mixture is poured into a mold and dried in a baking oven to become a solid semi-product. Thereafter, the first substrate layer 32 and the second substrate layer 33 are adhered to the semi-product to form the final product. Of course, when isolation layer 31 is not dried and hardened, such a liquid-phase gel-like isolation layer 31 can be adhered to the first substrate layer 32 and the second substrate layer 33, thereby saving the expense of adhesive used between the interferences of different materials in prior art. It can be seen from
It should be noted that, based on deliberate experiments, the present Inventor proves that the isolation layer 31 can block the electromagnetic wave as long as its thickness is larger than 1 mm. Of course, the thickness of the isolation layer 31 may be changed according to the strength of the electromagnetic waves to be blocked.
Please refer to
In the electromagnetic wave isolation device 3 of the present embodiment, the isolation layer 31 is sandwiched between the first substrate layer 32 and the second substrate layer 33 to form a main body of the electromagnetic wave isolation device 3. The metallic particles 313 in the isolation layer 31 are magnetic metals. Thus, when the distribution concentration of the metallic particles 31 achieves a desired value, the metallic particles 313 in the isolation layer 31 generate a sufficient effect of blocking the electromagnetic waves. The present invention has a simple structure and an improved practicability. Further, the production cost of the present invention is reduced.
The first surface 311 and the second surface 312 of the isolation layer 31 are adhered to the first substrate layer 32 and the second substrate layer 33 respectively. The first substrate layer 32 and the second substrate layer 33 are made of soft cloth, so that the electromagnetic wave isolation device 3 of the present invention can be made as an article that can be worn by a user and is air-permeable.
Please refer to
In the electromagnetic wave isolation device 3 of the present embodiment, the isolation layer 31 is constituted of metallic particles 313 for blocking electromagnetic waves. The first substrate layer 32 and the second substrate layer 33 are soft and can be made as an article worn by a user. In manufacturing, the metallic particles 313 can be directly wrapped in rubber, so that the electromagnetic wave isolation device 3 can be formed as pieces of various shapes. Thus, the production cost of the present invention is reduced, and the practicability thereof is increased.
Although the present invention has been described with reference to the foregoing preferred embodiments, it will be understood that the invention is not limited to the details thereof. Various equivalent variations and modifications can still occur to those skilled in this art in view of the teachings of the present invention. Thus, all such variations and equivalent modifications are also embraced within the scope of the invention as defined in the appended claims.
