KR101728110B1 - Flexible and thin film for shielding from electric wave and fabrication method for the same - Google Patents

Flexible and thin film for shielding from electric wave and fabrication method for the same Download PDF

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Publication number
KR101728110B1
KR101728110B1 KR1020150136020A KR20150136020A KR101728110B1 KR 101728110 B1 KR101728110 B1 KR 101728110B1 KR 1020150136020 A KR1020150136020 A KR 1020150136020A KR 20150136020 A KR20150136020 A KR 20150136020A KR 101728110 B1 KR101728110 B1 KR 101728110B1
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South Korea
Prior art keywords
carbon fiber
insulating film
electromagnetic wave
wave shielding
plurality
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KR1020150136020A
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Korean (ko)
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KR20170037005A (en
Inventor
김원석
박성범
구민예
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재단법인 한국탄소융합기술원
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Priority to KR1020150136020A priority Critical patent/KR101728110B1/en
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073Shielding materials
    • H05K9/0081Electromagnetic shielding materials, e.g. EMI, RFI shielding
    • H05K9/009Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising electro-conductive fibres, e.g. metal fibres, carbon fibres, metallised textile fibres, electro-conductive mesh, woven, non-woven mat, fleece, cross-linked
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00Layered products comprising a layer of synthetic resin
    • B32B27/12Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K9/00Screening of apparatus or components against electric or magnetic fields
    • H05K9/0073Shielding materials
    • H05K9/0081Electromagnetic shielding materials, e.g. EMI, RFI shielding
    • H05K9/0088Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a plurality of shielding layers; combining different shielding material structure

Abstract

A flexible thin film tape for electromagnetic wave shielding and a method of manufacturing the same are provided. The method for manufacturing a flexible thin film tape for electromagnetic wave shielding according to the present embodiment includes the steps of supplying an insulating film in a longitudinal direction to a thermal welding apparatus, attaching a carbon fiber strand to a plurality of carbon fiber yarns coated with an electromagnetic wave shielding material, A step of spreading a plurality of ammunition fiber yarns coated with an electromagnetic wave shielding material spread in the width direction of the insulating film to a thermal fusing device in the longitudinal direction, And thermally fusing a plurality of carbon fiber yarns coated with an insulating film and an electromagnetic wave shielding material.

Description

TECHNICAL FIELD [0001] The present invention relates to a flexible thin film tape for electromagnetic shielding and a method of manufacturing the flexible thin film tape.

TECHNICAL FIELD The present invention relates to a flexible thin film tape for shielding electromagnetic waves and a method of manufacturing the same. More particularly, the present invention relates to a thin film tape for electromagnetic wave shielding comprising a metal-coated carbon fiber yarn and a method of manufacturing the same.

Recently, with the rapid development of the electronic industry, a variety of electronic components such as automobiles, airplanes, and ships, which have been controlled in the past as mechanical devices, are being installed not only in various electronic products used in daily life.

As the electronic parts become the main parts of the equipment used in the industrial field or the home, the electromagnetic interference (EMI) generated due to the electromagnetic wave generated in the electronic equipment causes various electronic equipment and machinery to fail Or malfunctions have been reported.

Here, electromagnetic interference (EMI) is a phenomenon in which high electromagnetic radiation energy affects other facilities or human bodies. When all the electric / electronic devices using the power supply are operated, the electromagnetic waves generated according to the amount of current change per unit time are radiated Or conduction to impair the performance of other equipment.

As a method for preventing such electromagnetic interference, grounding, filtering, wiring and shielding methods are known. Shielding is to seal the source with a metal or a conductive object in order to minimize the electromagnetic noise emitted.

A shielding layer for electromagnetic wave shielding of a cable surrounds an insulating layer surrounding one or more cores made of a conductive material of an electromagnetic wave shielding cable and is generally made of metal.

Therefore, the conventional electromagnetic wave shielding cable has a problem in that the shielding layer made of metal is corroded because the weight of the electromagnetic shielding cable is increased by the shielding layer made of metal and the flexibility is low.

Therefore, the conventional electromagnetic wave shielding cable has a problem of hindering the weight saving of the transportation means such as an automobile, a ship and an airplane.

Japanese Laid-Open Patent Application No. 2009-245713 (published on October 22, 2009) Japanese Patent Laid-Open No. 2009-187944 (Published Aug. 20, 2009)

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a flexible thin film tape for electromagnetic wave shielding and a method of manufacturing the same.

According to an aspect of the present invention, there is provided a method of manufacturing a flexible thin film tape for shielding electromagnetic waves, comprising the steps of: supplying an insulating film in a longitudinal direction to a thermal welding apparatus; A step of spreading a plurality of carbon fiber yarns coated with an electromagnetic wave shielding material spread in the width direction of the insulating film to a thermal fusing device in the longitudinal direction so as to contact the carbon fiber yarns in a width direction of the insulating film, And thermally fusing a plurality of carbon fiber yarns coated with an insulating film and an electromagnetic wave shielding material in a fused portion.

The step of unfolding the carbon fiber strands may include the steps of passing a carbon fiber strand through a second guide roller portion of a pneumatic spreading device installed at a first guide roller portion of the pneumatic spreading device so as to be spaced apart from the first guide roller portion, A step of pressing the carbon fiber strands with a pressing portion of a pneumatic spreading device provided between the first guide roller portion and the second guide roller portion and a step of pressing the carbon fiber strands with the carbon fiber impregnated with the pressing portion by the first suction portion of the pneumatic spreading device provided below the pressing portion And sucking air in the lower portion of one side of the tongue.

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The step of unfolding the carbon fiber strands may include the steps of passing carbon fiber strands through a pressure roller portion of a heating type spreading device provided at a second supply portion of the heating type spreading device so as to be spaced apart from the second supply portion, A step of heating a carbon fiber strand with a heating unit of a heating type spreading apparatus provided in the heating type spreading apparatus, a second suction unit of a heating type spreading apparatus provided between the heating unit and the pressure roller unit, And sucking in air.

The step of thermally fusing a plurality of carbon fiber yarns coated with the insulating film and the electromagnetic wave shielding material may include a step of heating the insulating film and a plurality of carbon fiber yarns with an infrared heating device of the heat fusion portion, And passing a plurality of carbon fiber yarns coated with an insulating film and an electromagnetic wave shielding material between a pair of heat compression rollers of the fused portion.

Supplying an insulating film to a thermal welding apparatus, supplying a first thermal insulating film to the thermal welding apparatus so as to cover one surface of the insulating film, and supplying a plurality of carbon fiber yarns coated with an electromagnetic shielding material to the thermal welding apparatus And then supplying the second heat interlinings to the heat seal apparatus so as to cover the plurality of carbon fiber yarns arranged on the other surface located on the opposite side of one side of the insulating film.

The method may further include, after supplying the first heat insulating layer to the heat sealing apparatus, removing the first heat insulating sheet from the insulating film when the first heat insulating sheet passes the heat sealing portion.

The method may further include a step of cooling the flexible thin film tape for shielding electromagnetic waves, which is formed by thermally fusing a plurality of carbon fiber yarns coated with an insulating film and an electromagnetic wave shielding material, with a cooling section.

The sum of the thickness of the fused insulating film and the thickness of the plurality of carbon fiber yarns can be adjusted between 0.1 mm and 0.5 mm.

The flexible thin film tape for electromagnetic wave shielding according to an embodiment of the present invention may be formed by contacting adjacent carbon fiber yarns among a plurality of carbon fiber yarns coated with an electromagnetic wave shielding material, And an electromagnetic wave shielding thin film disposed on one side of the insulating film, the electromagnetic wave shielding thin film including a plurality of carbon fiber yarns coated with the electromagnetic wave shielding material, The carbon fiber yarns are arranged along the longitudinal direction in the width direction of the insulating film.

In addition, the material of the insulating film is selected from the group consisting of polyvinyl chloride, polyvinyl chloride, crosslinked, polyethylene, polyamide, polytetrafluoroethylene, fluorinated ethylene propylene Fluorinated ethylene propylene, ethylene tetrafluoroethylene, polypropylene, polyvinylidene fluoride, perfluoroalkoxy copolymer, thermoplastic polyurethane, polyvinylidene fluoride, A thermoplastic polyether ester elastomer, a thermoplastic polyether elastomer, a thermoplastic polystyrene block copolymer, a thermoplastic polyether ester elastomer, a thermoplastic polyether ester elastomer, a thermoplastic polystyrene block copolymer, a thermoplastic polyether ester elastomer,Restorative Murray (Thermoplastic polyamide elastomer) one polyamide, may comprise one of silicon rubber (Silicone rubber).

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The electromagnetic wave shielding material may include Ni, Cu, Ag, Al, and Mg.

The sum of the thicknesses of the insulating film and the electromagnetic wave shielding thin film may be 0.1 mm or more and 0.5 mm or less.

Other specific details of the invention are included in the detailed description and drawings.

According to one aspect of the present invention, there is provided a flexible thin film tape for electromagnetic wave shielding which is thin and light and a method of manufacturing the same.

According to an aspect of the present invention, there is provided a flexible thin film tape for electromagnetic wave shielding having excellent flexibility in a width direction and a length direction, and a manufacturing method thereof.

According to an aspect of the present invention, there is provided a method of manufacturing a flexible thin film tape for shielding electromagnetic waves capable of adjusting a width and a thickness.

1 is a schematic view of a thermal welding apparatus used for manufacturing a flexible thin film tape for shielding electromagnetic waves according to an embodiment of the present invention.
2 is a flowchart illustrating a method of manufacturing a flexible thin film tape for shielding electromagnetic waves according to an embodiment of the present invention.
3 is a flowchart illustrating a method of thermally fusing a plurality of carbon fiber yarns coated with an insulating film and an electromagnetic wave shielding material according to an embodiment of the present invention.
4 is a schematic view of a pneumatic spreading device used in a method for expanding carbon fiber strands according to an embodiment of the present invention.
5 is a flowchart showing a method of spreading carbon fiber strands using the pneumatic spreading apparatus of FIG.
6 is a schematic view of a heating type spreading apparatus used in a method for expanding carbon fiber strands according to an embodiment of the present invention.
7 is a flow chart showing a method of spreading carbon fiber strands using the heating type spreading apparatus of FIG.
8 is a plan view of a flexible thin film tape for shielding electromagnetic waves according to an embodiment of the present invention.
9 is a cross-sectional view taken along the line XI-XI in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. 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 the same or similar components are denoted by the same reference numerals throughout the specification.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

1 is a schematic view of a thermal welding apparatus used for manufacturing a flexible thin film tape for shielding electromagnetic waves according to an embodiment of the present invention.

The heat fusing apparatus 100 according to the present embodiment includes a guide roller portion 10, a heat fusion portion 20, a cooling portion 30, a discharge roller portion 40, an insulating film providing portion 50, A study unit 60, a collection unit 70, and a thermal interposer supply / recovery unit 80.

The guide roller unit 10 includes a first guide roller 11, a second guide roller 12 and a third guide roller 13 for guiding the insulating film 291, a plurality of carbon fibers (SCF) A fourth guide roller 14 and a fifth guide roller 15,

The guide roller unit 10 includes a sixth guide roller 16 for guiding the first interleaving plate P1 supplied from the first interleaving supply unit 81 of the interleave supplying and recovering unit 80, A seventh guide roller 17 for guiding the second interleaving sheet P2 supplied from the interleave supplying section 82 and a second interleaving sheet P2 passed through the heat sealing section 20 are disposed in the first interleaving collecting section And an eighth guide roller 18 for guiding the first guide roller 83 to the second guide roller 18.

Therefore, according to the present embodiment, the insulating film 291, the plurality of carbon fibers 292b, the first interleaving sheet P1 and the second interleaving sheet P2 are bonded to the heat sealing apparatus 100 .

The thermally fused portion 20 according to the present embodiment may include an infrared heating device 21 and a pair of heat compression rollers 22.

Here, the infrared heating device 21 may include a first infrared heating device 21a and a second infrared heating device 21b installed apart from the first infrared heating device 21a.

In addition, the pair of heat compression rollers 22 may include a pair of first heat compression rollers 22a and a pair of second heat compression rollers 22b.

Specifically, the pair of first thermal compression rollers 22a according to the present embodiment includes a first upper thermal compression roller 221a and a first lower thermal compression roller 221b provided below the first upper thermal compression roller 221a, And the pair of second thermal compression rollers 22b includes a second lower thermal compression roller 221b provided below the second upper thermal compression roller 221b and the second upper thermal compression roller 221b, 222b.

According to the present embodiment, a pair of first thermal compression rollers 22a can be provided between the first infrared heating device 21a and the second infrared heating device 21b, and a pair of first thermal compression rollers 22a, A second infrared heating device 21b may be installed between the pair of second heat compression rollers 22b.

Hereinafter, a method of manufacturing a flexible thin film tape for shielding electromagnetic waves using the heat fusing device 11 according to the present embodiment will be described in detail.

FIG. 2 is a flow chart showing a method of manufacturing a flexible thin film tape for shielding electromagnetic waves according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of an insulation film according to an embodiment of the present invention and a plurality of carbon fibers Is heat-sealed.

2 and 3, a method S100 for manufacturing a flexible thin film tape for electromagnetic wave shielding according to the present embodiment includes the steps of supplying an insulating film 291 to a thermal welding apparatus 100 (S110) A step (S130) of supplying a plurality of carbon fiber yarns 292b to the thermally fusing unit 100 and a step of thermally fusing the insulating film 291 and the carbon fiber yarns 292b in the heat fusion unit 20 of the heat- (S150).

Specifically, the insulating film 291 according to the present embodiment is guided by the first guide roller 11, the second guide roller 12 and the third guide roller 13 and is guided in the longitudinal direction of the insulating film 291 And can be supplied to the thermal fusing apparatus 100.

Here, the material of the insulating film 291 according to the present embodiment may be polyvinyl chloride, crosslinked polyvinyl chloride, polyethylene, polyamide, polytetrafluoroethylene Polytetrafluoroethylene, fluorinated ethylene propylene, ethylenetetrafluoroethylene, polypropylene, polyvinylidene fluoride, perfluoroalkoxy copolymer, A thermoplastic polyether ester, a thermoplastic polyether ester, a thermoplastic polyether elastomer, a thermoplastic polyether elastomer, a thermoplastic polyether elastomer, a thermoplastic polyether elastomer, a thermoplastic polyether elastomer, (Thermoplastic polystyrene b lock copolymer, a thermoplastic polyamide elastomer, and a silicone rubber.

The plurality of carbon fiber yarns 292b according to the present embodiment may be coated with an electromagnetic wave shielding material and a plurality of carbon fiber yarns 292b may be spread in the width direction of the insulating film 291, And can be guided by the fourth guide roller 14 and the fifth guide roller 15 in the longitudinal direction and supplied to the thermal fusing device 100.

The electromagnetic wave shielding material coated on the plurality of carbon fiber yarns 292b may include nickel (Ni), copper (Cu), silver (Ag), aluminum (Al), and magnesium (Mg).

The insulating film 291 and the carbon fiber yarn 292b are thermally fused to each other in step S150 according to the present embodiment by using an infrared ray heating device 21 with an insulating film 291 and a plurality of carbon fiber yarns SFCs The step S151 of heating and the step S152 of passing the insulating film 291 and the plurality of carbon fiber yarns SFCs through the pair of heat compression rollers 22 may be included.

More specifically, the insulating film 291 and the plurality of carbon fiber yarns (SFCs) supplied to the thermal fusing device 100 are heated by the first infrared heating device 21a and the first and second heat compression rollers 221a and 221b 1 lower-row compression roller 222a. Thereafter, the insulating film 291 and the plurality of carbon fiber yarns (SFCs) which have passed between the first upper thermal compression roller 221a and the first lower thermal compression roller 222a are heated by the second infrared heating device 21b A flexible thin film tape 290 for shielding electromagnetic waves is formed by thermally fusing an insulating film 291 and a plurality of carbon fiber yarns (SFCs) by passing the insulating film 291 between the second upper thermal compression roller 221b and the second lower thermal compression roller 222b. Is created.

The method S100 for manufacturing a flexible thin film tape for shielding electromagnetic waves according to the present embodiment is a method for manufacturing a flexible thin film tape for electromagnetic wave shielding according to this embodiment in which an insulating film 291 is supplied to a thermal welding apparatus 100, (S120) of supplying a single sheet of separable sheet P1.

In addition, the method (S100) for manufacturing a flexible thin film tape for shielding electromagnetic waves according to the present embodiment is characterized in that a plurality of carbon fiber yarns 292b are supplied to a thermal fusing device 100 and then a plurality of carbon fiber yarns 292b are covered And the step (S140) of supplying the second interleaving sheet (P2) to the heat sealing apparatus (100).

The method S100 for manufacturing a flexible thin film tape for shielding electromagnetic waves according to the present embodiment further comprises the steps of supplying the first interleaving sheet P1 to the heat sealing apparatus 100 and then inserting the first interleaving sheet P1 (Step S160).

If heat is excessively applied to the insulating film 291 and the plurality of carbon fiber yarns 292b, the insulating film 291 may be fused or the plurality of carbon fiber yarns 292b may be broken.

According to the present embodiment, the infrared ray heating device 21 and the pair of heaters (not shown) are attached to the first interleaving plate P1 and the second interleaving plate P2 provided to cover the insulating film 291 and the plurality of carbon fiber yarns 292b, A part of the heat applied by the insulating film 291 and the plurality of carbon fiber yarns 292b in the compression roller 22 can be absorbed.

As a result, according to this embodiment, the insulating film 291 and the plurality of carbon fiber yarns 292b are thermally fused by the first interleaving sheet P1 and the second interleaving sheet P2 to form an electromagnetic wave shielding flexible thin film tape 290 ) Can be maintained at a suitable temperature.

In addition, according to the present embodiment, the thickness t of the flexible thin film tape 290 for shielding electromagnetic waves can be adjusted by controlling heat transmitted to the insulating film 291 and the plurality of carbon fiber yarns 292b.

The method (S100) for manufacturing a flexible thin film tape for electromagnetic wave shielding according to the present embodiment further includes a step (S170) of cooling the electromagnetic wave shielding flexible thin film tape 290 having passed through the heat fusion portion 20 with the cooling portion 30, As shown in FIG.

According to the present embodiment, the electromagnetic wave shielding flexible thin film tape 290 cooled by the cooling section 30 can be discharged through the discharge roller section 40 and recovered to the recovery section 70.

The method for manufacturing a flexible thin film tape for electromagnetic wave shielding (S100) according to the present embodiment includes the steps of: forming a plurality of insulating films 291 and 291 extending in the width direction of the insulating film 291 and arranged in the longitudinal direction of the insulating film 291 The flexible thin film tape 290 for shielding electromagnetic waves including the electromagnetic wave shielding thin film 292 including the carbon fiber yarn 292b can be manufactured.

Here, according to this embodiment, since the plurality of carbon fiber yarns 292b are spread in the width direction of the insulating film 291, the thickness t1 of the electromagnetic wave shielding thin film 292 can be made thin.

The thickness t of the electromagnetic wave shielding flexible thin film tape 290, which is the sum of the thickness t1 of the electromagnetic wave shielding thin film 292 and the thickness t2 of the insulating film 291 according to the present embodiment, May be 0.5 mm or less.

As a result, according to the method (S100) for manufacturing a flexible thin film tape for shielding electromagnetic waves according to the present embodiment, it is possible to provide a flexible thin film tape 290 for electromagnetic wave shielding which is thin and light.

Further, according to this embodiment, since the plurality of carbon fiber yarns 292b are spread in the width direction of the insulating film 291, excellent flexibility in the width direction of the electromagnetic wave shielding flexible thin film tape 290 can be ensured.

In addition, the excellent flexibility in the longitudinal direction of the flexible thin film tape 290 for shielding electromagnetic waves can be ensured by the plurality of flexible carbon fibers 292b arranged in the longitudinal direction of the insulating film 291.

Therefore, according to the method (S100) for manufacturing a flexible thin film tape for shielding electromagnetic waves according to this embodiment, the flexible thin film tape 290 for shielding electromagnetic waves having excellent flexibility can be provided.

The step S130 of supplying a plurality of carbon fiber yarns to the thermocompression bonding apparatus 100 according to the present embodiment includes a step S130A and a step S130B of spreading a carbon fiber strand OCF composed of a plurality of carbon fiber yarns 292b ).

Hereinafter, a method of spreading a carbon fiber strand (OCF) composed of a plurality of carbon fiber yarns 292b in the width direction of the insulating film 291 will be described in detail.

4 is a schematic view of a pneumatic spreading device used in a method for expanding carbon fiber strands according to an embodiment of the present invention.

4, the pneumatic spreading device 90 according to the present embodiment includes a first supply portion 91, a first guide roller portion 92, a pressing portion 93, a first suction portion 94, A second guide roller portion 95, a first water rejection portion 96, and a first water impregnation portion 97.

Here, the second guide roller unit 95 according to the present embodiment may include a twenty-first guide roller 95a and a twenty-second guide roller 95b.

The pressing portion 93 according to the present embodiment includes a first pressing member 93a and a twenty first guide roller 95a provided between the first guide roller portion 92 and the twenty first guide roller 95a, And a second pressing member 93a provided between the guide rollers 95b.

The first suction portion 94 according to the present embodiment is installed under the pressing portion 93 and includes the eleventh suction device 94a provided below the first pressing member 93a and the second suction device 94b provided below the first pressing member 93a, And a twelfth suction device 94b provided below the second suction device 93b.

The first impregnation portion 97 according to the present embodiment is provided with a plurality of expanded carbon fiber yarns 91a and 91b provided between the second pressure member 93b and the first water rejection 96 and passing through the second pressure member 93b. (292b) may be passed and impregnated with the insulating liquid.

5 is a flowchart showing a method of spreading carbon fiber strands using the pneumatic spreading apparatus of FIG.

5, a step S130A of unfolding the carbon fiber strand (OCF) according to the present embodiment includes passing the carbon fiber strand (OCF) from the first guide roller portion 92 to the second guide roller portion 95 A step S131A of pressing the carbon fiber strand OCF with the pressing portion 93 and a step S132A of pressing the carbon fiber strand OCF with the pressing portion 93. The carbon fiber strand OCF pressed by the pressing portion 93 to the first suction portion 94 (S133A) of sucking the air of the portion and the step (S134A) of impregnating the expanded carbon fiber yarn 292b with the insulating liquid.

Specifically, one surface of the carbon fiber strand (OCF) passed through the first guide roller portion 92 is pressed by the first pressing member 93a, and then the carbon fiber strand (OCF) The lower part of the pressed side is sucked in air. At this time, air is infiltrated into the carbon fiber strand (OCF) due to the difference in the pressure change around the carbon fiber strand (OCF).

Thereafter, the carbon fiber strand (OCF) into which the air has permeated is passed between the twenty-first guide roller 95a and the twenty-second guide roller 95b. The carbon fiber strand OCF infiltrated with air passing through the twenty first guide roller 95a is pressed by the second urging member 93b and the carbon fiber strand OCF) in the lower part of the pressed surface. At this time, when more air is infiltrated into the carbon fiber strand (OCF) due to the difference in the pressure change around the infiltrated carbon fiber strand (OCF), the bundled carbon fiber yarns 292b are unfolded.

Here, each of the suction device of the first pressing portion and the suction device of the first suction portion according to the present embodiment is not limited to two, but may be one, or three or more.

Further, the width and thickness of the carbon fiber yarn (OCF) according to the present embodiment can be adjusted by the number of the suction devices of the first pressing portion and the first pressing portion.

That is, if the number of the pressing devices of the first pressing portion and the suction devices of the first suction portion is increased in the step of spreading the carbon fiber strand (OCF) (S130A), the width of the spreading of the carbon fiber yarn 292b is increased and the thickness is reduced Conversely, if the number of the pressurizing device and the suction device is reduced, the width of the spreading of the carbon fiber yarn 292b can be reduced and the thickness thereof can be increased.

As a result, according to the present embodiment, the carbon fiber strand (OCF) can be spread with a plurality of carbon fiber yarns 292b, and the width and thickness of the plurality of carbon fiber yarns 292b can be adjusted.

The plurality of carbon fiber yarns 292b thus spread may be impregnated with the insulating liquid through the first impregnation portion 97 containing the insulating liquid.

As described above, a plurality of carbon fiber yarns 292b spread by using the carbon fiber strands (OCF) may be supplied to the thermocompression bonding apparatus 100 to be used to produce the flexible thin film tape 290 for shielding electromagnetic waves.

6 is a schematic view of a heating type spreading apparatus used in a method for expanding carbon fiber strands according to an embodiment of the present invention.

6, the spreading device 190 according to the present embodiment includes a second supply portion 191, a pressure roller portion 192, a heating portion 193, a second suction portion 194, A second impregnation unit 195 and a second impregnation unit 196.

The pressure roller unit 192 according to the present embodiment includes a pair of first pressure rollers 192a, a pair of second pressure rollers 192b, a pair of third pressure rollers 192c, A first pressing roller 194d and a pair of fifth pressing rollers 195d.

Here, the pair of first pressing roller portions 192a may include a first lower pressing roller 192a2 provided below the first upper pressing roller 192a1 and the first upper pressing roller 192a1. The pair of second pressure roller portions 192b may include a second lower pressure roller 192b2 provided below the second upper pressure roller 192b1 and the first upper pressure roller 192b1. The pair of third pressure roller portions 192c may include a third lower pressure roller 192c2 disposed below the third upper pressure roller 192c1 and the third upper pressure roller 192c1. The pair of fourth pressure roller portions 192d may include a fourth lower pressure roller 192d2 disposed under the fourth upper pressure roller 192d1 and the fourth upper pressure roller 192d1. The pair of fifth pressure roller portions 192e may include a fifth lower pressure roller 192e2 disposed under the fifth upper pressure roller 192e1 and the fifth upper pressure roller 192e1.

The heating unit 193 according to this embodiment is installed between the first supply unit 191 and the pressure roller unit 192 to heat the carbon fiber strand OCF.

Specifically, the heating unit 193 includes a first heating unit 193a, a first pressure roller 192a, and a second pressure roller 192b provided between the second supply unit 191 and the pair of first pressure rollers 192a, A third heating device 193c provided between the second pressure roller 192b and the third pressure roller 192c, a third pressure roller 192c and a second heating device 193b provided between the second pressure roller 192b and the second pressure roller 192b, A fourth heating device 193d provided between the fourth pressing roller 192d and a fifth heating device 193e provided between the fourth pressing roller 192d and the fifth pressing roller 192e .

The second suction portion 194 according to the present embodiment is disposed between the heating portion 193 and the pressure roller portion 192 and is disposed between the heating portion 193 and the pressing roller portion 192 to heat the carbon fiber strand OCF heated by the heating portion 193 The lower part of the air can be sucked in.

Specifically, the second suction portion 194 is provided with a twenty-first suction device 194a and a pair of second heating portions 193b, which are provided between the first heating portion 193a and the pair of first pressure rollers 192a, A twenty-fourth suction device 194b provided between the third heating roller 193c and the pair of third pressure rollers 192c, a twenty-fourth suction device 194b provided between the pair of third pressure rollers 192c, A fourth suction unit 194d provided between the heating unit 193d and the pair of fourth pressure rollers 192d and a fourth suction unit 194d provided between the fifth heating unit 193e and the pair of fifth pressure rollers 192e 25 suction device 194e.

The second impregnation unit 196 according to the present embodiment includes a pair of fifth pressure rollers 192e which are provided between a pair of fifth pressure rollers 192e and a second water rejection unit 195, The carbon fiber yarn 292b of the carbon fiber yarn can be passed through and impregnated with the insulating liquid.

7 is a flow chart showing a method of spreading carbon fiber strands using the heating type spreading apparatus of FIG.

7, in step S130B, a carbon fiber strand is spread by using a heating type spreading device. The carbon fiber strand is wound on a carbon fiber strand (not shown) by a pressurizing roller part 192 provided in a second supply part 191 and spaced apart from a second supply part 191 (S131B) heating the carbon fiber strand (OCF), heating the carbon fiber strand (OCF) with the heating unit 193 (S1332B), heating the carbon fiber strand (S133B) of sucking air in the lower part of one side of the OCF and a step (S134B) of impregnating the expanded plurality of carbon fiber yarns 292b with an insulating liquid.

Specifically, after the carbon fiber strand (OCF) passed through the second supply part 191 is heated by the first heating device 193a, the carbon fiber strand (OCF) The air is sucked in the lower part of the air. At this time, due to the difference in the pressure generated by the inhaled air, air permeates through the heated carbon fiber strands (OCF).

Thereafter, the same process as the process of spreading the carbon fiber strand (OCF) by using the first heating device 193a and the 21st suction device 194a is performed by the second heating device 193b and the 22nd suction device 194b, The third heating device 193c and the 23rd suction device 194c, the fourth heating device 193d and the 24th suction device 194e, the fifth heating device 193e and the 25th suction device 194e.

Here, each of the heating apparatus of the heating unit and the suction unit of the second suction unit according to the present embodiment is not limited to five, and may be one to four or six or more.

The width and thickness of the carbon fiber yarn (OCF) according to the present embodiment can be adjusted by the number of the heating devices of the heating part and the number of suction devices of the second suction part.

That is, if the number of the heating units of the heating unit and the suction units of the second suction unit are increased in the step of extending the carbon fiber strand (OCF) (S130B), the width of the spreading of the carbon fiber yarns 292b can be increased and the thickness can be reduced . On the other hand, if the number of the heating device and the suction device is reduced, the width of the carbon fiber yarn 292b can be reduced and the thickness of the carbon fiber yarn 292b can be increased.

As a result, according to the present embodiment, the carbon fiber strand (OCF) can be spread with a plurality of carbon fiber yarns 292b, and the width and thickness of the plurality of carbon fiber yarns 292b can be adjusted.

The plurality of carbon fiber yarns 292b thus spread may be impregnated with the insulating liquid through the second impregnation portion 196 containing the insulating liquid.

As described above, a plurality of carbon fiber yarns 292b spread by using the carbon fiber strands (OCF) may be supplied to the thermocompression bonding apparatus 100 to be used to produce the flexible thin film tape 290 for shielding electromagnetic waves.

FIG. 8 is a plan view of a flexible thin film tape for shielding electromagnetic waves according to an embodiment of the present invention, and FIG. 9 is a sectional view cut along the line XI-XI in FIG.

Referring to FIGS. 8 and 9, the flexible thin film tape 290 for shielding electromagnetic waves according to the present embodiment may include an insulating film 291 and an electromagnetic wave shielding thin film 292.

Here, the insulating film 291 may include one of polypropylene (PP), thermoplastic polyurethane (TPU), and polyethylene terephthalate (PET).

The electromagnetic wave shielding film 292 according to the present embodiment includes a plurality of carbon fiber yarns 292b coated with an electromagnetic wave shielding material 292a bonded to the insulating film 291 by thermal fusion, ). ≪ / RTI >

Here, the plurality of carbon fiber yarns 292b coated with the electromagnetic wave shielding material may be arranged along the length direction in the width direction of the insulating film 291.

In addition, the electromagnetic wave shielding material 292a coated on the plurality of carbon fiber yarns 292b according to the present embodiment may include nickel (Ni) and copper (Cu).

The thickness t of the electromagnetic wave shielding flexible thin film tape 290 according to the present embodiment is not less than 0.1 mm which is the sum of the thickness t1 of the electromagnetic wave shielding thin film 292 and the thickness t2 of the insulating film 191 May be 0.5 mm or less.

As a result, according to the present embodiment, it is possible to provide a flexible thin film tape 290 for electromagnetic wave shielding which is thin and light in thickness.

Further, according to the present embodiment, since the plurality of carbon fiber yarns 292b are spread in the width direction of the insulating film 291 and arranged in the longitudinal direction of the insulating film, The flexible thin film tape 290 can be provided.

However, the electromagnetic wave shielding thin film 292 according to the present embodiment is not limited to a single layer structure in which a plurality of carbon fiber yarns 292b are spread in the width direction of the insulating film 291, Layer structure in which a plurality of other carbon fiber yarns are arranged on the carbon fiber yarns 292b.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, And it goes without saying that the invention belongs to the scope of the invention.

100: Flexible thin film tape for electromagnetic wave shielding 10: Guide roller portion
20: thermal fusion portion 30: cooling portion
40: discharge roller portion 50: insulating film provided
60: Tinfoil preparation unit 70: Recovery unit
80: heat supply and recovery unit
90: Pneumatic spreading device
190: Heated spreading device
290: Flexible thin film tape for electromagnetic wave shielding

Claims (14)

  1. Supplying an insulating film in a longitudinal direction to the thermal welding apparatus;
    Expanding the carbon fiber strands in the width direction of the insulating film so that adjacent ones of the plurality of carbon fiber yarns coated with the electromagnetic shielding material are in contact with each other;
    Supplying a plurality of carbon fiber yarns coated with the electromagnetic wave shielding material spread in the width direction of the insulating film to the heat welding apparatus in the longitudinal direction; And
    Thermally fusing a plurality of carbon fiber yarns coated with the insulating film and the electromagnetic wave shielding material in a thermal welding portion of the thermal welding apparatus; Wherein the electromagnetic wave shielding tape is made of a metal.
  2. delete
  3. The method according to claim 1,
    The step of unfolding the carbon fiber strands comprises:
    Passing the carbon fiber strands through a first guide roller portion of a pneumatic spreading device to a second guide roller portion of the pneumatic spreading device spaced apart from the first guide roller portion;
    Pressing the carbon fiber strands with a pressing portion of the pneumatic spreading device provided between the first guide roller portion and the second guide roller portion; And
    Sucking air in a lower portion of one side of the carbon fiber strand pushed by the pressing portion into a first suction portion of the pneumatic spreading device provided below the pressing portion; Wherein the electromagnetic wave shielding tape is made of a metal.
  4. The method according to claim 1,
    The step of unfolding the carbon fiber strands comprises:
    Passing the carbon fiber strands through a pressing roller portion of the heating type spreading device installed at a second feeding portion of the heating type spreading device so as to be spaced apart from the second feeding portion;
    Heating the carbon fiber strands with a heating unit of the heating type spreading device provided between the second supply unit and the pressure roller unit;
    Sucking air in a lower portion of one side of the carbon fiber strand heated by the heating unit to a second suction unit of the heating type spreading apparatus provided between the heating unit and the pressure roller unit; Wherein the electromagnetic wave shielding tape is made of a metal.
  5. The method according to claim 1,
    Wherein the step of thermally fusing the insulating film and the plurality of carbon fiber yarns coated with the electromagnetic wave shielding material comprises:
    Heating the insulating film and the plurality of carbon fiber yarns with an infrared heating device of the heat fusion portion; And
    Passing a plurality of carbon fiber yarns coated with the insulation film and the electromagnetic wave shielding material between a pair of heat compression rollers of the heat fusion unit installed apart from the infrared heating device; Wherein the electromagnetic wave shielding tape is made of a metal.
  6. The method according to claim 1,
    Supplying the first insulating interlayer to the heat sealing apparatus so as to cover one surface of the insulating film after supplying the insulating film to the heat sealing apparatus; And
    A plurality of carbon fiber yarns coated with the electromagnetic wave shielding material are supplied to the thermal fusing device, and then the plurality of carbon fiber yarns coated on the other side of the insulating film are disposed on the other side of the insulating film, Supplying a second row interleaver; Further comprising the steps of: preparing a flexible thin film tape for electromagnetic wave shielding.
  7. The method according to claim 6,
    Further comprising the step of removing the first interlevel film from the insulating film when the first interlevel film passes the thermally fused portion after supplying the first interlevel film to the thermal fusing apparatus, Gt;
  8. The method according to claim 1,
    Further comprising the step of cooling the flexible thin film tape for electromagnetic wave shielding formed by thermally fusing a plurality of carbon fiber yarns coated with the insulating film and the electromagnetic wave shielding material with a cooling section.
  9. The method according to claim 1,
    Wherein the sum of the thickness of the heat-sealable insulating film and the thickness of the plurality of carbon fiber yarns is adjusted to be between 0.1 mm and 0.5 mm.
  10. Insulating film; And
    And a plurality of carbon fiber yarns positioned adjacent to one another among adjacent ones of the plurality of carbon fiber yarns coated with the electromagnetic wave shielding material to be thermally welded to the insulating film, Shielding film; / RTI >
    Wherein a plurality of carbon fiber yarns in which carbon fiber yarns positioned adjacent to one another among the plurality of carbon fiber yarns coated with the electromagnetic wave shielding material are disposed are arranged in the width direction of the insulating film, .
  11. delete
  12. 11. The method of claim 10,
    The material of the insulating film is selected from the group consisting of polyvinyl chloride, polyvinyl chloride, crosslinked, polyethylene, polyamide, polytetrafluoroethylene, fluorinated ethylene propylene Fluorinated ethylene propylene, ethylenetetrafluoroethylene, polypropylene, polyvinylidene fluoride, perfluoroalkoxy copolymer, thermoplastic polyurethane, thermoplastic polyurethane, A thermoplastic polyether ester elastomer, a thermoplastic polyether elastomer, a thermoplastic polystyrene block copolymer, a thermoplastic polyether ester elastomer, a thermoplastic polyether ester elastomer, a thermoplastic polyether elastomer, a thermoplastic polystyrene block copolymer, De one Restorative Murray (Thermoplastic polyamide elastomer), flexible thin film tape for electromagnetic wave shielding which comprises one of a silicon rubber (Silicone rubber).
  13. 11. The method of claim 10,
    Wherein the electromagnetic wave shielding material comprises Ni, Cu, Ag, Al, and Mg.
  14. 11. The method of claim 10,
    Wherein the total thickness of the insulating film and the electromagnetic wave shielding thin film is 0.1 mm or more and 0.5 mm or less.
KR1020150136020A 2015-09-25 2015-09-25 Flexible and thin film for shielding from electric wave and fabrication method for the same KR101728110B1 (en)

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JP2009187944A (en) * 2008-02-01 2009-08-20 Hon Hai Precision Industry Co Ltd Method of manufacturing coaxial cable
JP2009535530A (en) * 2006-05-02 2009-10-01 グッドリッチ コーポレイション Modification of reinforcing fiber tows used in composites using nano-reinforcing materials

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JP2009535530A (en) * 2006-05-02 2009-10-01 グッドリッチ コーポレイション Modification of reinforcing fiber tows used in composites using nano-reinforcing materials
JP2009187944A (en) * 2008-02-01 2009-08-20 Hon Hai Precision Industry Co Ltd Method of manufacturing coaxial cable

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