KR100622542B1 - An aluminum film for an electric wave breaker ane the making method thereof - Google Patents

Abstract

The present invention relates to a radio wave shielding aluminum film and to a method for manufacturing the same, which surrounds inner coatings such as various cable lines to block jamming from the outside, and more particularly, to uniformly apply a urethane-based adhesive to one side of the plastic film. Adhesive coating step, semi-drying step of passing the adhesive-coated plastic film for 10 to 15 minutes in a dryer to which hot air is applied at about 80 to 120 ° C., and an aluminum deposition layer is formed on the upper surface of the plastic film. Aluminum deposition film and the plastic film semi-dried through the adhesive is passed through a compression roller to be laminated as one, but the aluminum deposition layer is laminated to place the aluminum deposition layer in the middle portion, the laminated aluminum film 55 ~ 65 ℃ about one 44 to 52 hours of curing in the finished and finished The present invention relates to an aluminum film for cable wave blocking and a method of manufacturing the same.

Plastic film, aluminum deposition layer, urethane adhesive, aluminum deposition film, laminated aluminum film

Description

An aluminum film for an electric wave breaker ane the making method

1 is a manufacturing process of the aluminum film for cable wave blocking according to the present invention

Figure 2 is a perspective schematic view of the state in which the cable film blocking aluminum film according to the present invention is applied to a conventional cable

             <Description of Symbols for Major Parts of Drawings>

1a, 1b. Plastic film

2. Glue

3. Aluminum deposition film

4. Aluminum deposition layer

5. Laminated aluminum film

6. Cable line

7. Medial coating

The present invention relates to a radio wave shielding aluminum film and to a method for manufacturing the same, which surrounds inner coatings such as various cable lines to block jamming from the outside, and more particularly, to uniformly apply a urethane-based adhesive to one side of the plastic film. Adhesive coating step, semi-drying step of passing the adhesive-coated plastic film for 10 to 15 minutes in a dryer to which hot air is applied at about 80 to 120 ° C., and an aluminum deposition layer is formed on the upper surface of the plastic film. Aluminum deposition film and the plastic film semi-dried through the adhesive is passed through a compression roller to be laminated as one, but the aluminum deposition layer is laminated to place the aluminum deposition layer in the middle portion, the laminated aluminum film 55 ~ 65 ℃ about one 44 to 52 hours of curing in the finished and finished The present invention relates to an aluminum film for cable wave blocking and a method of manufacturing the same.

In general, the aluminum film used to wrap the inner coating such as various cable lines to block jamming from the outside is used aluminum deposition film having an aluminum deposition layer formed on only one side, the aluminum deposition film is a conventional vacuum deposition method By vaporizing or subliming the aluminum to be coated in the vacuum chamber to form a deposition layer by solidifying on one surface of a plastic film made of a material such as polyester, polypropylene in atomic or molecular units.

However, in the conventional aluminum deposition film, an aluminum deposition layer is formed only on one side of the plastic film, and when applied to a cable line, the aluminum deposition layer is exposed to moisture or oxygen in the air flowing between the connection portions or gaps between the cable lines. The damage caused by oxidation and corrosion was greatly reduced, and the barrier property of external radio waves was greatly reduced, and the aluminum deposition layer was formed on one surface of the plastic film while being exposed to the outside. There was an inconvenience of having to install separately so that the aluminum deposition layer is always positioned inward so as to be delayed.

The present invention is to solve the above problems by stacking the upper and lower surfaces of the aluminum deposition layer in a plastic film so that the aluminum deposition layer is not exposed to the outside, oxygen in the air flowing between the connecting portion or the gap of various cable lines and It is not oxidized or corroded by moisture, etc., so that the radio wave blocking property is not reduced. The purpose is.

In order to achieve this purpose, the adhesive coating step of uniformly applying a urethane-based adhesive on one side of the plastic film, the plastic film coated with the adhesive is passed through the dryer for 10 to 15 minutes in a hot air of about 80 ~ 120 ℃ for half an hour In the semi-drying step of drying, the conventional aluminum deposition film having the aluminum deposition layer formed on the upper surface of the plastic film and the plastic film dried by the adhesive are passed through a compression roller to be laminated together so that the aluminum deposition layer is positioned at the center. Lamination of the aluminum deposition film to be laminated, it is a feature of the present invention consists of a hardening and completion step is completed by curing the aluminum film laminated in one 44 to 52 hours at about 55 ~ 65 ℃.

The aluminum film for cable wave blocking of the present invention wraps the inner coating such as various cable wires to block interference from the outside, and the adhesive coating step of uniformly applying the adhesive to one side of the plastic film, the plastic coated with the adhesive Semi-drying step of passing the film through a dryer and semi-drying, laminating the conventional aluminum deposition film having an aluminum deposition layer on the upper surface of the plastic film and the plastic film semi-dried with the adhesive, but the aluminum deposition layer is located at the center It is composed of aluminum deposition film laminating step, and curing and finishing step of hardening the laminated aluminum film by one, and completing the laminated aluminum film as described above wrapped in the inner cover of the cable to receive interference from TV or computer It is used for cables for electronic devices.

Hereinafter, a method of manufacturing the radio wave blocking aluminum film according to the present invention will be described in detail with reference to each step as follows.

1. Glue application step

As shown in FIG. 1, the urethane-based adhesive 2 is uniformly applied to one side of the plastic film 1a having a thickness of 6 to 15 μm in a thickness of 5 to 10 μm, and the plastic film 1a is made of PET. (Polyester), polypropylene (Polypropylene), etc. are used, the urethane-based adhesive (2) has a strong adhesive strength, there are no by-products during the reaction, and has a good impact resistance and flexibility when bonding to the plastic film (1a) The most excellent compatibility was shown, and in the present invention, UR2-666-21 urethane adhesive from Henkel, Germany was used.

2. Semi-drying step

The adhesive film 2 is semi-dried by passing the plastic film 1a to which the adhesive 2 is applied for 10 to 15 minutes through a dryer to which hot air of about 80 to 120 ° C. is applied.

In case of drying above the temperature, the adhesive 2 is in an excessively dried state on the plastic film 1a, so that the aluminum deposition film 3 does not adhere well, whereas in the case of drying below the temperature, the adhesive 2 In the non-dried state, the aluminum deposition film 3 is attached, so that the undried adhesive 2 flows outward between the adhesive layers.

3. Aluminum deposition film lamination step

Compress roller is a conventional aluminum deposition film 3 having the aluminum deposition layer 4 formed on the upper surface of the plastic film 1b having a thickness of 6 to 15 µm and the plastic film 1a having the adhesive 2 semi-dried. (Not shown) is laminated to one, but the aluminum deposition layer 4 is positioned in the center portion of the plastic film (1a) (1b) is laminated on both the upper and lower surfaces of the aluminum deposition layer 4 To be laminated.

The aluminum deposition film (3) is to deposit the aluminum deposition layer (4) on the upper surface of the plastic film (1b) by a vacuum deposition method, which is known in the art, the vaporization of aluminum to be coated in a conventional vacuum chamber or The aluminum deposition layer 4 is formed by sublimation to solidify on one surface of the plastic film 1b made of polyester, polypropylene, or the like on an atomic or molecular basis with a thickness of 0.05 to 0.5 µm.

Meanwhile, the aluminum deposition film 3 may be manufactured by sputtering, ion plating, or the like, which are known in the art, instead of vacuum deposition.

4. Hardening and completion stage

When the aluminum film 5 laminated through one of the rollers is cured at about 55 to 65 ° C. for 44 to 52 hours, the aluminum film 5 having the aluminum deposition layer 4 formed thereon is completed.

The laminated aluminum film 5 manufactured as described above is used to surround the inner covering 7 of the various cable lines 6 and block interference waves from the outside, as shown in FIG. The plastic film 1a, 1b is completely enclosed, and the aluminum deposition layer 4 is not oxidized and corroded by oxygen or moisture in the air flowing between the connection portions or the gaps of the various cable wires 6, thereby effectively preventing external propagation. Will be blocked.

Specific embodiments according to the present invention are as follows.

<Example>

On one side of a 10 μm-thick plastic film 1a made of PET (Polyester) material, a uniform coating of UR2-666-21 urethane adhesive (2) made by Henkel, Germany, was carried out to a thickness of 8 μm, and then the adhesive (2) The coated plastic film 1a is passed through a drier to which hot air at 100 ° C. is applied for 12 minutes so that the adhesive 2 is semi-dried, and the upper surface of the 10 μm thick plastic film 1b made of PET is usually used. The conventional aluminum deposition film 3 having the aluminum deposition layer 4 having a thickness of 0.1 μm by the vacuum deposition method and the plastic film 1a of the semi-dried state of the adhesive 2 are passed through a compression roller and laminated together. The aluminum deposition layer 4 is positioned at the center so that the plastic films 1a and 1b are laminated on both the upper and lower surfaces of the aluminum deposition layer 4 and cured at 60 ° C. for 48 hours. The aluminum deposition layer 4 inside It is generated, thereby completing the aluminum film (5).

<Comparative Example>

A conventional aluminum deposition film was prepared in which an aluminum deposition layer was formed by a conventional vacuum deposition method on a 10 μm thick plastic film upper surface made of PET material.

The laminated aluminum film and the aluminum deposited film prepared by the above Examples and Comparative Examples were left at room temperature for 70 days at a humidity of 70%, and then the electromagnetic shielding performance, oxidizing property and corrosiveness were measured. In the 1000 MHz range was measured by applying the standard measurement method of the American Society for Testing and Materials (ASTM).

<Table 1> Measurement result of electromagnetic wave shielding performance, oxidative property and corrosiveness

Example Comparative Example Remarks      Electromagnetic Shielding Performance 30 38.0 37.2 -Frequency unit: MHz-Shielding performance unit: dB (The higher the shielding performance value, the better shielding of electromagnetic waves) 50 38.3 37.2 80 38.2 37.1 100 38.4 37.3 200 39.1 38.0 300 39.3 38.2 400 38.6 38.5 500 38.0 37.1 600 38.4 37.3 700 38.6 37.4 800 39.0 38.1 900 39.0 38.2 1000 38.1 37.0 Oxidative none Highly oxidizing Oxidation of Oxygen in Air causticity none Highly corrosive Corrosiveness measurement of moisture in the air

As shown in Table 1, the laminated aluminum film 5 of the embodiment according to the present invention exhibits electromagnetic shielding performance of a constant value between 38.0 and 39.3 dB without being oxidized and corroded in air, but the aluminum deposited film of the comparative example is oxidative. And the corrosiveness and the electromagnetic shielding performance of the numerical value (37.0 ~ 38.5dB) dropping overall as compared to the embodiment according to the present invention, it can be seen that the electromagnetic shielding performance is lower than the present invention.

As described above, according to the present invention, both the upper and lower surfaces of the aluminum deposition layer are surrounded by a plastic film, so that the aluminum deposition layer is not exposed to the outside, and is oxidized and corroded by oxygen and moisture in the air through the connection part or gap of the cable line. Since the shielding property of external radio waves is kept constant, when applied to various cable wires, both sides are surrounded by the same plastic film, and thus, various types of cable wires can be easily manufactured by distinguishing the upper and lower surfaces.

Claims (3)

In the method for manufacturing an aluminum deposition film produced by depositing aluminum deposition on a conventional plastic film, the adhesive coating step of uniformly applying a urethane-based adhesive on one side of the plastic film, the plastic film coated with the adhesive 80 ~ 120 ℃ Semi-drying step of passing through semi-drying for 10 to 15 minutes in a dryer to which hot air is applied, the conventional aluminum deposition film having an aluminum deposition layer formed on the upper surface of the plastic film and the plastic film semi-dried the adhesive roller Aluminum deposition film lamination step of laminating the aluminum deposition layer to be placed in the middle portion by passing through, and the curing and completion step is completed by curing the aluminum film laminated one by one at 55 ~ 65 ℃ 44 ~ 52 hours Made of aluminum film for cable wave blocking characterized in that Method. The method of claim 1, wherein the plastic film is made of PET (Polyester) or Polypropylene (Polypropylene). In an aluminum deposition film in which aluminum deposition is deposited on a conventional plastic film, an adhesive coating step of uniformly applying a urethane-based adhesive to one side of the plastic film, and a hot air of about 80 to 120 ° C. is applied to the plastic film coated with the adhesive. Semi-drying step of passing through the paper for 10 to 15 minutes in semi-drying, drying the conventional aluminum deposition film with the aluminum deposition layer formed on the upper surface of the plastic film and the plastic film dried with the adhesive through the compression roller But the aluminum deposition layer lamination step to be laminated so that the aluminum deposition layer is located in the center, it is produced through a curing and completion step is completed by curing the aluminum film laminated in one 44 ~ 52 hours at 55 ~ 65 ℃ degree Aluminum film for cable electric wave shield to say.

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