KR20190018237A - The electro magnetic wave shielding fabric and manufacture method thereof - Google Patents

Abstract

The purpose of the present invention is to provide a fabric enabling electromagnetic wave shielding and a manufacturing method of the fabric. According to an embodiment of the present invention, the fabric comprises a first percent by weight of a cotton fiber, a second percent by weight of a polyester fiber, and a third percent by weight of a stainless fiber based on the total weight of the fabric, wherein the first percent by weight, the second percent by weight and the third percent by weight are different from one another, the fabric is formed by weaving the cotton fiber, the polyester fiber and the stainless fiber in a state that the cotton fiber, the polyester fiber and the stainless fiber are crossed with one another so that the cotton fiber, the polyester fiber and the stainless fiber are formed in a predetermined shape, the stainless fiber is a fiber that has been processed and manufactured to have the diameter of a micrometer unit, and the fabric can be formed by weaving the stainless fiber, the cotton fiber and the polyester fiber in a state that the stainless fiber is crossed with the cotton fiber and the polyester fiber in the form of a single strand of fiber or a bundle of a plurality of fibers.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fabrication method of a fabric,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fabric capable of shielding electromagnetic waves and a method of manufacturing such fabrics, and more particularly, to a fabrics fabrication method and a fabrication method thereof, in which weight percentages of cotton fiber, polyester fiber, A polyester yarn, and a stainless steel yarn to form a predetermined shape, and a method of manufacturing such a fabric.

An electromagnetic wave, which is an abbreviation of electromagnetic wave, is a kind of electromagnetic energy generated in the flow of electricity and magnetism. The electric field and the magnetic field repeatedly link and spread as if they are waves, so they are called electromagnetic waves.

These electromagnetic waves can be classified according to the frequency magnitude. That is, they are classified into radio wave, infrared ray, visible ray, ultraviolet ray, X-ray and gamma ray in order of frequency. The term "electromagnetic wave" refers to an electromagnetic wave having a frequency of 3000 GHz or less and includes a long wave, a medium wave, a short wave, a microwave, a microwave, and a microwave.

In daily life, sun light, infrared light, ultraviolet light is also a kind of electromagnetic wave. In addition, the earth itself generates electromagnetic waves. Electromagnetic waves are also generated in antennas, satellites, etc., which can be used for broadcasting and communication in broadcasting stations, relay stations, base stations, ships, and aviation communication transmitting apparatuses. Electromagnetic waves are constantly generated in wireless communication terminals including mobile phones used by almost everyone. In addition, electromagnetic waves are generated also in radar and medical equipment for thermal therapy.

It is already well known that exposure to electromagnetic waves at high risk of radiation such as X-rays and gamma rays can cause various diseases such as leukemia and cancer. In addition, ultraviolet rays can cause skin cancer and the like.

It has been reported that when the human body is exposed to extreme low frequency (300 Hz or less) and low frequency (10 kHz or less) for a long time, the body rhythm is changed with the change of body temperature and hormone and developed into various diseases. Neurological anxiety disorder, depression, headache, eye fatigue, insomnia, etc. are reported to occur. In particular, men are increasingly reported that the number of sperm is decreasing, and that women can cause menstrual irregularities and birth defects. Accordingly, various researches and developments for blocking electromagnetic waves have been actively conducted.

Korean Utility Model Registration No. 20-0463452 (Oct. 30, 2012) Korean Patent No. 10-0578686 (2006.05.04)

The present invention is intended to provide fabrics formed by cross-weaving cross-yarns, polyester yarns and stainless steel yarns of different weight percentages to form a predetermined shape, and a method of manufacturing such fabrics.

As one embodiment of the present invention, a fabric capable of shielding electromagnetic waves and a method of fabricating the fabric can be provided.

In the fabric that can cut off the electromagnetic wave according to an embodiment of the present invention, a first weight% cotton fiber, a second weight% polyester fiber, and a third weight% The first weight%, the second weight% and the third weight% are different from each other, and the fabric is woven by interlacing the cotton yarn, the polyester yarn and the stainless yarn so as to form a predetermined shape The stainless steel yarn is fabricated to have a diameter in the micrometer range, and the fabric can be formed by interlacing with cotton yarn and polyester yarn in the form of a single strand of fibers or a bundle of plural fibers.

According to an embodiment of the present invention, the cotton yarn and the polyester yarn may be alternately arranged in parallel, and the fabric may be woven by alternately crossing the arranged cotton yarns and the polyester yarns to each other with the stainless yarns shifted from each other.

Further, the cotton yarn, polyester yarn and stainless steel yarn may be twisted to twist, and the fabric may be formed by interweaving the twist yarns to form a predetermined shape.

The first weight% according to an embodiment of the present invention has a range value of 39 to 45, the second weight percentage has a range value of 33 to 36, and the third weight percentage has a range value of 22 to 25 Lt; / RTI >

A method of manufacturing a fabric capable of interrupting electromagnetic interference according to an embodiment of the present invention includes the steps of: preparing a first cotton fiber by weight, a second polyester fiber by weight and a polyester fiber by weight based on the total weight of the fabric, Preparing 3% by weight of a stainless fiber, and forming a fabric by interweaving the prepared cotton yarn, polyester yarn and stainless yarn so as to form a predetermined shape, wherein the first weight%, the second weight The weight% and the third weight% are different from each other, and the stainless steel yarn is a fiber produced by processing to have a diameter in the micrometer range, and is cross-linked with a cotton yarn and a polyester yarn in the form of a single- This can be woven.

Further, the cotton yarn and the polyester yarn may be alternately arranged in parallel, and the fabric may be woven by mutually crossing the cotton yarn and the polyester yarn arranged side by side while the stainless yarns are alternately shifted.

In addition, the cotton yarn, polyester yarn and stainless steel yarn can be twisted to twist, and the fabric can be formed by interweaving the twist yarns to form a predetermined shape.

According to an embodiment of the present invention, the first weight% has a range of 39 to 45, the second weight% has a range of 33 to 36, and the third weight% ranges from 22 to 25 Value. ≪ / RTI >

By using the fabric according to an embodiment of the present invention, not only the extremely low frequency but also the electromagnetic wave in the low frequency band can be effectively blocked. In other words, it is possible to shield electromagnetic waves in the sub-low frequency band by more than 40%.

Further, the fabric according to an embodiment of the present invention may be formed by cross-woven fabrics crossing each other to form various patterns (patterns) of cotton yarn, polyester yarn, and stainless steel yarn, and the electromagnetic wave shielding effect may be different depending on the blend ratio of stainless steel yarn have. As the mixing ratio of stainless steel yarns increases, the electromagnetic wave shielding effect may become higher.

1 is an enlarged view of a fabric formed according to various weave patterns of single fibers in accordance with an embodiment of the present invention.
FIG. 2 is an enlarged view of a fabric formed in accordance with various weave patterns using twist yarns according to an embodiment of the present invention.
3 is an enlarged view of a fabric formed in accordance with various weave patterns using only twist yarns according to an embodiment of the present invention.
4 is a flowchart illustrating a method of manufacturing a fabric capable of shielding electromagnetic waves according to an embodiment of the present invention.
FIGS. 5 and 6 are graphs showing electromagnetic wave shielding effects according to the frequencies of the stainless steel yarn weight ratios according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

The terms used in this specification will be briefly described and the present invention will be described in detail.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. Also, in certain cases, there may be a term selected arbitrarily by the applicant, in which case the meaning thereof will be described in detail in the description of the corresponding invention. Therefore, the term used in the present invention should be defined based on the meaning of the term, not on the name of a simple term, but on the entire contents of the present invention.

When an element is referred to as "including" an element throughout the specification, it is to be understood that the element may include other elements as well, without departing from the spirit or scope of the present invention. In addition, when a part is referred to as being "connected" to another part throughout the specification, it includes not only "directly connected" but also "connected in between" .

Static electricity is an electricity in which the charge is stopped and the distribution of electric charge does not change with time, and the cause of static electricity is known as 'static electricity' because of friction. Electrons circling around the nucleus of an object can be moved to another object through friction. Our body also exchanges electrons whenever it makes contact with surrounding objects. In this process, electricity is saved little by little. When electricity is accumulated over a suitable limit, when it touches the proper dielectric, it flickers instantaneously. This phenomenon is called electrostatic phenomenon. For example, during the dry winter season, you may experience a static sensation in your hair or skin when you take off your sweaters. In addition, a static electricity phenomenon may occur even when the metal handle door is held or an elevator button made of metal is pressed. However, static electricity is only high (over 25,000 volts, depending on the drying conditions of the atmosphere, for example) depending on the drying conditions of the atmosphere, and currents flow only a small amount during a very short period of time and are rarely seriously injured by static electricity. However, to prevent static electricity in the room, you can use carpets made of natural materials, or you can cover the metal handle of the door with natural fibers. In electronic devices such as computers, it is important to ground the metal case, the main board, and the like, since static electricity may cause an operation failure of internal elements or the like.

In order to eliminate or minimize the generation of static electricity in daily life, it is possible to use a fabric capable of shielding electromagnetic waves as in the embodiment of the present invention. Using these fabrics to make clothes, or to make cover or the like, the generation of static electricity can be eliminated or minimized. In addition, it is possible to minimize the occurrence of the physical problems (for example, decrease in the number of spermatozoa, physiological impairment, etc.) of the male and female as described above.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an enlarged view of a fabric formed according to various weave patterns of single fibers according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of a yarn according to an embodiment of the present invention, FIG. 3 is an enlarged view of a fabric formed according to various weave patterns using only a twist yarn according to an embodiment of the present invention. 4 is a flowchart illustrating a manufacturing method of a fabric capable of shielding electromagnetic waves according to an embodiment of the present invention.

In the fabric of the present invention, a first cotton fiber 100, a second polyester cotton 200, and a second polyester fiber 200 are formed on the fabric, ), And a third weight% of stainless fibers 300, wherein the first weight%, second weight% and third weight% are each different and the fabric is a cotton yarn 100, a polyester yarn 200 and a stainless steel yarn 300 to form a predetermined shape, and the stainless steel yarn 300 is a fiber manufactured by processing to have a diameter of micrometer (μm) The fabric may be formed by interlacing with the cotton yarn 100 and the polyester yarn 200 in the form of a bundle of a plurality of fibers.

Referring to FIG. 1, the fabric capable of shielding electromagnetic waves may be stitched so that the cotton yarn 100, the polyester yarn 200, and the stainless steel yarn 300 cross each other such that the yarns cross each other. In other words, the stainless steel yarn 300 is incorporated in the manufacturing process in addition to the fabrication of the mixed yarn of the general cotton yarn 100 and the polyester yarn 200, so that the fabric can be formed so that all or a part of the electromagnetic wave can be shielded. 1 (a) shows a fabric formed by interwoven fibers of a single strand yarn 100, a polyester yarn 200 and a stainless yarn 300, and (b) a single strand yarn 100 ), And polyester yarn (200) fibers together with a bundle of a plurality of stainless steel yarn (300) fibers. In FIG. 1 (b), the bundle of the plurality of stainless steel yarn 300 fibers may mean continuous yarn of the stainless steel yarn 300.

Twisting refers to yarn or thread that gives twist to a yarn or yarn of continuous fibers or twist yarns of more than two yarns together. In this specification, a red circle is indicated by a dotted line as shown in FIG. 2 to more clearly show that it is continuous. Typical twisting methods are ordinary twists such as twisting, twisting, and special twisting or decorative twisting for special effects. In addition, the direction of twist is divided into left and right twist, or Z twist, and right twist is right twist or S twist. In other words, yarns used in fabrics can be broadly divided into twine and twine. The shape of the braided fiber bundle can be referred to as twist yarn, and by twisting the yarn, the strength of the yarn increases, the elasticity is given by the required thickness, and the tactile feel of the fabric made of the outer yarn and the yarn can be controlled. Such a speaker may also be used to create a special yarn. In the case of industrial materials such as tire cords and ropes, it is necessary to twist the first strand (single strand) beforehand (twist the base) and to twist the same in the same direction or in the opposite direction . In addition, there is a method of giving a decorative effect to a thread bundle by putting a special yarn in the yarn or changing the yarn method. Generally, a filament-like yarn is a yarn without twisting, but a staple-shaped fiber is not threaded unless it is twisted, so it is twisted in a pre-twist to make a single yarn.

1 (a) and 1 (b), according to an embodiment of the present invention, the yarn 100 and the polyester yarn 200 may be alternately arranged side by side, and the yarn 100 And the polyester yarn 200 are alternately crossed with the stainless steel yarns 300 so that the fabric can be woven. For example, the cotton yarn 100 and the polyester yarn 200 may alternately be arranged side by side on a fabric, and the cotton yarn 100 and the polyester yarn 200 may be a sort of fabric of the fabric, The stainless steel yarn 300 produced by processing to have a diameter in the unit of micrometer (μm) crosses with the yarn 100 and the polyester yarn 200 in the form of a single strand of fibers or a bundle of a plurality of fibers, . A fabric capable of shielding electromagnetic waves according to the same weaving as in Fig. 1 can be manufactured.

1 (b), the stainless steel yarn 300 may be interwoven with the cotton yarn 100 and the polyester yarn 200 in the form of a bundle of a plurality of fibers so as to be woven have. Although the stainless steel yarns 300 are briefly shown in FIG. 1 (b) for the sake of identification, the plurality of stainless steel yarns 310 and 320 may be twisted together to form a twisted yarn and used for manufacturing a fabric.

2, the cotton yarn 100, the polyester yarn 200 and the stainless steel yarn 300 may be twisted to form a twisting F1 according to an embodiment of the present invention, The cloth may be formed by crossing the cloths F1 to form a predetermined shape. 2 (a), the cotton yarn 100, the polyester yarn 200 and the stainless yarn 300 are twisted together to form a twist yarn F1, and such twist yarns are used for manufacturing a fabric capable of shielding electromagnetic waves Can be used. 1 and 2, the cotton yarn 100 and the polyester yarn 200 may be alternately arranged side by side in a fabric, and such a cotton yarn 100 and the polyester yarn 200 may be arranged in the form of a kind of fabric The cotton yarn 100, the polyester yarn 200 and the stainless yarn 300 can be woven with each other by mutually intersecting twisted twist yarns F1 with respect to the yarn.

2 (b), the stainless yarn 300 and the twist yarn F1 may alternately cross each other in the form of a string of the yarn 100 and the polyester yarn 200 alternately arranged . According to an embodiment of the present invention, a different pattern of weaving may be implemented depending on the purpose of use of the fabric, the size of the fabric, and the weight of the fabric. In other words, in order to further enhance the electromagnetic wave shielding function, a woven fabric of a pattern composed of only stainless steel yarns 300 or a pattern of increasing the utilization ratio in the weaving of the stainless steel yarns 300 may be utilized. For example, as shown in FIG. 2 (b), the stainless steel yarn 300 may be inserted with a twisted yarn together with the twisted yarn F1 to be used for fabrication of the fabric.

According to an embodiment of the present invention, a first twist yarn F1 and a second twist yarn F2, in which a cotton yarn 100, a polyester yarn 200 and a stainless yarn 300 are twisted with each other, May be produced. As shown in FIG. 3 (b), the first twist yarn F1 and the additional stainless yarn 300 may be interwoven with the second twist yarn F2 in the form of a net in a staggered manner.

The first weight% according to an embodiment of the present invention has a range value of 39 to 45, the second weight percentage has a range value of 33 to 36, and the third weight percentage has a range value of 22 to 25 Lt; / RTI > The above-described numerical values are provided for convenience of explanation and are not necessarily limited thereto. However, the weight percentage of the stainless steel yarn 300 may be 20 or more, and the weight percentage of the stainless steel yarn 300 may preferably be in the range of 22 to 25, considering the proper weight of the raw fabric. Further, it has been experimentally confirmed that the electromagnetic wave shielding function can be effective in this case. The experiment was carried out through the FITI test laboratory.

FIGS. 5 and 6 are graphs showing electromagnetic wave shielding effects according to the frequencies of the stainless steel yarn weight ratios according to an embodiment of the present invention.

The shielding effectiveness (SE) according to the frequency was confirmed as shown in Table 1 below when the weight percentage of the stainless steel yarn 300 was 22 (for example, a fabric named electromagnetic wave 30).

[Table 1]

The degree of the electromagnetic wave shielding effect according to the frequency when the weight percentage of the stainless steel yarn 300 is 22 can be confirmed in the form of a graph as shown in FIG.

In addition, when the weight% of the stainless steel yarn 300 is 25 (for example, the fabric named as the electromagnetic wave 50), the electromagnetic shielding effectiveness (SE) according to the frequency was confirmed as shown in Table 2 below.

[Table 2]

The degree of the electromagnetic wave shielding effect according to the frequency when the weight percentage of the stainless steel yarn 300 is 25 can be shown in the form of a graph as shown in FIG.

In the above example, the larger the SE value, the greater the electromagnetic wave shielding effect. In other words, as the weight percentage of the stainless steel yarn 300 increases, the electromagnetic wave shielding effect increases. In view of the practical use such as the weight of the fabric, the weight percentage of the stainless steel yarn 300 is 22 to 25 It may be desirable to have a range value.

A method of manufacturing a fabric capable of shielding electromagnetic interference according to an exemplary embodiment of the present invention includes fabricating a first weight% cotton fiber 100, a second weight% polyester fiber (200) and a third weight% of stainless fibers 300 are prepared, and the prepared cotton yarn 100, the polyester yarn 200 and the stainless steel yarn 300 have a predetermined shape (S200) of forming a fabric by cross-woven to form a fabric. Cotton yarn 100, polyester yarn 200 may be fibers made according to conventional techniques. Also, the stainless steel yarn 300 may be fabricated by processing to have a diameter of micrometer unit. The stainless steel yarn 300 may also intersect with the cotton yarn 100 and the polyester yarn 200 in the form of a single strand of fibers or a bundle of a plurality of fibers. Through this process, all or some parts of the electromagnetic shielding can be woven.

According to an embodiment of the present invention, the first weight%, the second weight% and the third weight% may be different from each other. The weight percentage of the fabric can be relatively determined depending on the purpose of use of the fabric, the weight of the fabric, etc. However, as described above, it is preferable that the weight percentage of the stainless steel yarn 300 is in the range of 22 to 25 .

The cotton yarn 100 and the polyester yarn 200 may be alternately arranged in parallel so that the yarns 100 and the polyester yarns 200 arranged in parallel cross each other with the stainless yarns 300 being shifted relative to each other The fabric can be woven.

The cotton yarn 100, the polyester yarn 200 and the stainless steel yarn 300 are twisted to twist and are cross-woven so that the twist yarns F1 and F2 form a predetermined shape, Can be formed.

According to an embodiment of the present invention, the first weight% has a range of 39 to 45, the second weight% has a range of 33 to 36, and the third weight% ranges from 22 to 25 Value. ≪ / RTI >

In the manufacturing method according to an embodiment of the present invention, the contents of the fabric described above may be applied. Therefore, the description of the same contents as those of the above-described fabrics is omitted for the manufacturing method.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: Cotton fiber
200: polyester fiber
300, 310, 320: Stainless fiber
F1, F2: twisting of cotton yarn, polyester yarn and stainless steel yarn

Claims (8)

As a fabric capable of shielding electromagnetic waves,
Wherein the fabric has, on the basis of the total weight of the fabric,
A first weight percent cotton fiber;
A second weight percent polyester fiber; And
A third weight percent of stainless fibers,
The first weight%, the second weight% and the third weight% are different from each other, and the fabric is formed by crossing the cotton yarn, the polyester yarn and the stainless yarn so as to form a predetermined shape,
The stainless steel yarn is fabricated by processing to have a diameter in the micrometer range, and the fabric can be formed by interwoven with the cotton yarn and the polyester yarn in the form of a single strand of fibers or a bundle of a plurality of fibers It is possible to cut the electromagnetic shielding material.
The method according to claim 1,
The cotton yarn and the polyester yarn may be alternately arranged side by side,
Wherein the fabric is woven by mutually intersecting the stainless steel yarns with respect to the cotton yarn and the polyester yarn arranged in parallel to each other.
The method according to claim 1,
The cotton yarn, polyester yarn and stainless steel yarn can be twisted to twist,
Wherein the fabric is formed by crossing the twist yarns so as to form a predetermined shape.
The method according to claim 1,
Wherein the first weight% has a range of 39 to 45, the second weight% has a range of 33 to 36, and the third weight% has a range of 22 to 25 Which can cut the electromagnetic wave.
A manufacturing method of a fabric capable of shielding electromagnetic waves,
Preparing a first weight percent cotton fiber, a second weight percent polyester fiber, and a third weight percent stainless fiber based on the total weight of the fabric; And
And forming the fabric by crossing the prepared cotton yarn, polyester yarn and stainless yarn so as to form a predetermined shape,
The first weight%, second weight% and third weight% are each different,
The stainless steel yarn is fabricated by processing to have a diameter in the micrometer range, and the fabric can be formed by interwoven with the cotton yarn and the polyester yarn in the form of a single strand of fibers or a bundle of a plurality of fibers Wherein the electromagnetic wave shielding material is a metal material.
6. The method of claim 5,
The cotton yarn and the polyester yarn may be alternately arranged side by side,
Wherein the fabric is woven by mutually intersecting the stainless steel yarns with respect to the cotton yarn and the polyester yarn arranged in parallel to each other.
6. The method of claim 5,
The cotton yarn, polyester yarn and stainless steel yarn can be twisted to twist,
Wherein the fabric is formed by crossing the twist yarns so as to form a predetermined shape, thereby forming the fabric.
6. The method of claim 5,
Wherein the first weight% has a range of 39 to 45, the second weight% has a range of 33 to 36, and the third weight% has a range of 22 to 25 Wherein the electromagnetic wave shielding member is made of a metal.

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