JPH0546097U - Corrosion-proof electromagnetic wave shield material - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a corrosion-resistant electromagnetic wave shield material that can prevent rusting of the conductive material of the electromagnetic wave shield layer due to the penetration of moisture from the outside and can also serve as a finishing material for removing obstacles caused by various electromagnetic waves. provide. [Structure] Waterproof insulating layers 2 and 3 such as synthetic resin films are formed by vapor deposition, coextrusion molding, laminating, or the like on both front and back surfaces of an electromagnetic wave shield layer 1 serving as a metal foil layer such as electrolytic iron foil and other conductive layers. The non-combustible or flame-retardant material layers 4 and 5 are appropriately laminated on both outer surfaces with an adhesive or the like, and the finishing material layer 6 is appropriately adhered to the outer surface of one of the non-combustible or flame-retardant material layers 4. It is laminated with agents.

Description

[Detailed description of the device] [Industrial applications]

The present invention relates to an anti-corrosion electromagnetic wave shield material for removing obstacles due to various electromagnetic waves, which can prevent rusting of a conductive material forming an electromagnetic wave shield layer and can also serve as a finishing material.

[0002]

[Prior Art]

 It is known that the electromagnetic wave shielding performance can be imparted by mounting a metal plate, but there are restrictions from various practical aspects such as finishing when it is used as an interior material, so metal spraying on the finishing material is required. Alternatively, a method such as metal vapor deposition, metal foil sticking, mixing of conductive filler, mixing of conductive fiber, or application of conductive paint as another means is adopted. In addition, since the electromagnetic wave shield is incomplete at the seam of the sheet-shaped interior material, a method of folding the edge pieces or sticking a metal foil tape having an adhesive to the seam is used.

[0003]

[Problems to be solved by the device]

 Although the electromagnetic wave shielding materials suitable for the above interior materials are all considered in terms of electromagnetic wave shielding, the current situation is that they have not been improved with the intention of preventing corrosion of the conductive material. For example, the electromagnetic wave shielding material installed on the wall may be impaired by moisture from the ground side or moisture from the room side, causing the conductive material to rust over time, causing deterioration of the electromagnetic wave shield performance. was there.

The present invention has been made by paying attention to the above-mentioned problems of corrosion prevention, and it is possible to prevent rusting of the conductive material and at the same time, to make a decorative finish for the exterior such as wallpaper. The purpose is to provide a corrosion-resistant electromagnetic wave shielding material made possible.

[0005]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides a corrosion-resistant electromagnetic wave shielding material by laminating a waterproof insulating layer on both front and back surfaces of an electromagnetic wave shielding layer as a conductive layer and laminating a non-combustible or flame-retardant material layer on both outer surfaces thereof. It is characterized in that Further, the present invention is also characterized in that a finishing material layer is laminated on one surface of the above-mentioned structure, that is, the outer surface of the non-combustible or flame-retardant material layer to form a corrosion-resistant electromagnetic wave shielding material.

[0006]

[Action]

 The waterproof insulation layers on both the inside and outside of the electromagnetic wave shield layer can block the penetration of moisture from the ground side and the inside of the room, so the conductive material can be prevented from rusting, and a solvent-type adhesive can be used on the surface to cover wallpaper, etc. The finishing material layer can be laminated by sticking or the like, and even in this case, rusting of the conductive material can be prevented.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. The electromagnetic wave shield layer 1 is a metal foil layer, a metal layer formed by spraying or vapor depositing a metal on a waterproof insulating layer, a metal foil obtained by sticking a metal foil, a film or a sheet layer containing conductive filler, conductive fibers, etc. An optional conductive layer can be adopted, but it will be a flexible material with uniform thickness, high conductivity and uniform shielding performance, relatively lightweight, easy to manufacture and relatively low manufacturing cost. Particularly preferred as the material is a metal foil layer, and a thickness of around 6 to 60 μm is particularly preferred.

As the metal foil layer, electrolytic iron foil, electrolytic copper foil, rolled iron foil, copper foil, titanium foil, stainless steel foil, and other conductive metal foils can be used. What is present is electrolytic iron foil. When the electrolytic iron foil is used, it is possible to obtain an electromagnetic wave shielding performance of about 60 dB or more when the thickness is about 15 to 50 μm.

In the anticorrosion electromagnetic wave shield material of FIG. 1, waterproof insulation layers 2 and 3 are laminated on both front and back surfaces of the electromagnetic wave shield layer 1, and noncombustible or flame retardant material layers 4 and 5 are laminated on both outer surfaces thereof. Has been formed.

The waterproof insulating layers 2 and 3 are formed by film lamination or primer coating. The film is a fluororesin, ionomer, nylon, polyethylene terephthalate, polycarbonate, polyester, polyethylene, polypropylene, polystyrene, polyeletane, polyvinyl alcohol, polyvinyl chloride, vinylidene chloride, various copolymers such as ABS, AES, EVA, and others. Synthetic resin film, synthetic paper, etc., which are preferably flame-retardant materials, are laminated and integrated with the electromagnetic wave shield layer 1 by co-extrusion molding, dry laminating, wet laminating, etc. lamination molding, thermocompression bonding etc., and other appropriate methods. To be done.

When the waterproof insulating layers 2 and 3 are films, for example, the thickness is preferably around 5 to 50 μm, and when the waterproof insulating layers 2 and 3 are coated, the thickness is preferably around 0.1 to 30 μm, and strength is required, for example. Nylon, polyethylene terephthalate, etc. are used as the anticorrosion electromagnetic wave shielding material for entrances and exits, etc., and polypropylene, vinylidene chloride, etc. are used as the anticorrosion electromagnetic wave shielding material for areas with low moisture permeability. can do.

Further, the waterproof insulation layer 2 on the indoor side of the waterproof insulation layers 2 and 3 can be adhered to the electromagnetic wave shield layer 1 by a weak adhesive so as to be peelable. The weak adhesive is an arbitrary adhesive such as urethane-based, acrylic-based, etc., and has an adhesive strength smaller than that of an ordinary adhesive (about 500 g or more / 15 mm wide surface) that causes cohesive failure, preferably about 200- It has an adhesive strength of 450 g / 15 mm width surface, most preferably 300 to 350 g / 15 mm width surface, and in this range, when it functions as an adhesive and the waterproof insulating layer 2 is separated from the electromagnetic wave shield layer 1, the adhesive Can be peeled off from the electromagnetic wave shield layer 1 while being substantially attached to the waterproof insulating layer 2 side.

The non-combustible or flame-retardant material layers 4 and 5 are, for example, calcium carbonate paper, asbestos paper, flame-retardant treated paper impregnated with a bromine- or phosphoric acid-based flame retardant, and have a thickness of about 40 to 500 μm. Is preferred, and the waterproof insulating layers 2 and 3 are laminated on both outer sides with an appropriate adhesive such as a solvent type adhesive.

As shown in FIG. 2, a finishing material layer 6 is further adhered to the outer surface of the incombustible or flame-retardant material layer 4 on the indoor side through an appropriate adhesive such as a solvent-type adhesive to prevent corrosion of the electromagnetic wave shield. The material can be formed. As the finishing material layer 6, any material that can be used as wallpaper or the like can be applied. For example, a polyvinyl fluoride resin or other flame-retardant synthetic resin film layer is used, and a colored or non-colored or a printed or non-printed film is used. Can be used.

The anticorrosion electromagnetic wave shielding material formed by laminating the non-combustible or flame-retardant material layers 4 and 5 on both sides of the electromagnetic wave shielding layer 1 is directly adhered to the base surface (wall surface etc.) G with a solvent type adhesive or the like as it is. It can be used by adhering with an agent. When used as an electromagnetic wave shield and interior material, for example, one of the incombustible or flame-retardant material layer 5 is adhered to the base surface with an appropriate adhesive, and a commercially available wallpaper is attached to the outer surface of the incombustible or flame-retardant material layer 4 on the front side. The finishing material can be applied by spraying or brushing the finishing coating material. Further, the anticorrosion electromagnetic wave shield material in which the finishing material layer 6 is formed on the outer surface of the non-combustible or flame-retardant material layer 4 can be manufactured in a factory, and the non-combustible or flame-retardant material layer 5 on the back surface is attached to the base surface. By doing so, it becomes an interior material as it is.

When the anticorrosion electromagnetic wave shielding material is provided in parallel on the base surface, a conductive material such as a conductive tape or a conductive paint is applied to the joint T so as to extend over the edges of the anticorrosion electromagnetic wave shielding material. It is adhered or joined with a conductive plate, the edge pieces are folded together, or a conductive staple 7 having a protruding needle in a U-shape is driven as shown in FIG. By this means, the electromagnetic wave shielding performance can be maintained.

Further, when the waterproof insulating layer 2 on the surface side of the electromagnetic wave shield layer 1 is weakly adhered, the electromagnetic wave shield performance can be maintained as shown in FIG. That is, a cutting line 8 which cuts the surface to the waterproof insulating layer 2 with a blade such as a heat-cutting jig or a cutter or other means while keeping the widths W and W slightly from the seam T edge of the adjacent anticorrosion electromagnetic wave shield material, respectively. 8 is formed, and if the waterproof insulating layer 2 and the non-combustible or flame-retardant material layer 4 and the finishing material layer 6 at the edges separated by the cutoff line 8 are peeled from the electromagnetic wave shield layer 1 in the laminated state, a weak adhesive Can be separated from the electromagnetic wave shield layer 1 while being almost attached to the waterproof insulating layer 2 and the laminated body can be peeled off, so that the surface of the electromagnetic wave shield layer 1 is exposed by a width W. If the weak adhesive remains partially or thinly on the surface of the electromagnetic wave shield layer 1 in the peeled state, the weak adhesive can be easily removed by rubbing with a cloth or the like.

Next, for example, solder 9 as a conductive bonding material is bonded and welded to the joint T so as to straddle the exposed electromagnetic wave shield layers 1 and 1, and both electromagnetic wave shield layers 1 and 1 are made conductive. The solder 9 is preferably rod-shaped or band-shaped solder having an appropriate width, but it may be welded intermittently. A film tape 10 of the same or different color as the non-combustible or flame-retardant material layer 4 or the finishing material layer 6 is adhered on the joint portion so as to straddle it. The film tape 10 may be one having a pressure-sensitive adhesive or an adhesive applied on its back surface, or may be a tape which is applied with an adhesive and then laminated.

The caulking material 11 may be filled on the welded solder 9, and the film tape 10 may be applied to the surface of the caulking material 11. Alternatively, although not shown, soldering may be made by welding the solder on one side of a metal foil tape. Using a tape, apply the solder side of the soldered tape so as to straddle the exposed electromagnetic wave shield layers 1 and 1, and heat and pressure weld from the outside of the tape to weld the solder and join the electromagnetic wave shield layers 1 and 1. It can also be conducted. The latter method is effective for unskilled workers, or for surfaces such as the ceiling that are difficult to work.

The above-mentioned soldered tape is, for example, on the upper surface of a solder-attaching roller, which is rotatably arranged by partially immersing it in the molten solder of a solder melting tank, and above the molten solder on both front and rear sides of the roller. A metal foil tape made of, for example, nickel-plated electrolytic iron foil is inserted through the tape pressing roller that is erected up and down, and a movable knife after solder bonding to the tape. It can be manufactured by finishing the solder to a uniform thickness and smoothness at the edges, applying flux to prevent oxidation, and then winding it up on a take-up reel.

[0021]

[Effect of the device]

 As described above, the anticorrosion electromagnetic wave shield material of the present invention can sufficiently shield the electromagnetic wave by the electromagnetic wave shield layer 1, and at the same time, the waterproof insulating layers 2 and 3 formed on both surfaces of the anticorrosion electromagnetic wave shield material can protect the outside, for example, the base side or the outside air. It is possible to prevent the permeation of moisture from the inside and prevent rusting of the conductive material of the electromagnetic wave shield layer 1. In addition, even if the adhesive is a solvent type adhesive, the moisture of the adhesive does not migrate. It is possible to prevent the conductive material from rusting, and it is possible to easily perform the laminated construction.

According to the anticorrosion electromagnetic wave shielding material in which the waterproof insulating layers 2 and 3 and the non-combustible or flame-retardant material layers 4 and 5 are laminated on both surfaces of the electromagnetic wave shielding layer 1, the anti-corrosion electromagnetic wave shielding material can be used as it is, A desired wallpaper or the like may be laminated on the outer surface of the flame-retardant material layer 4 or a coating may be applied to form a finishing material, and the finishing material layer 6 may be laminated on the outer surface of the non-combustible or flame-retardant material layer 4. According to the anticorrosion electromagnetic wave shielding material as described above, the electromagnetic wave shielding / finishing material can be obtained by directly bonding the non-combustible or flame-retardant material layer 5 on the back surface to the lower ground G.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of an example of an anticorrosion electromagnetic wave shield material according to the present invention.

FIG. 2 is a sectional view of another example of the anticorrosion electromagnetic wave shielding material according to the present invention.

FIG. 3 is a cross-sectional view showing an example of joint treatment of a corrosion-resistant electromagnetic wave shield material.

FIG. 4 is a cross-sectional view showing another example of joint processing of the anticorrosion electromagnetic wave shielding material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Electromagnetic wave shield layer 2 Waterproof insulating layer 3 Waterproof insulating layer 4 Non-combustible or flame-retardant material layer 5 Non-combustible or flame-retardant material layer 6 Finishing material layer

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Creator Ryoichi Isoyama 4-6-15 Sendagaya, Shibuya-ku, Tokyo Fujita Co., Ltd. Aluminum foil Co., Ltd. (72) Inventor Hiroo Ueno 1 Tomiie-cho, Kanagawa-ku, Yokohama, Kanagawa Tokai Aluminum Foil Co., Ltd. (72) Inventor Kazumasa Onishi 2-12-14 Nagata-cho, Chiyoda-ku, Tokyo Ceremony Company ABC Trading Company (72) Inventor Ryuzo Uchida 2-12-14 Nagata-cho, Chiyoda-ku, Tokyo Stock Company Inc. (72) Inventor Koji Ota 2-12-14 Nagata-cho, Chiyoda-ku, Tokyo Ceremony Company ABC Company

Claims (2)

[Scope of utility model registration request] 1. An anticorrosion electromagnetic wave shield material comprising a waterproof insulating layer laminated on both front and back surfaces of an electromagnetic wave shield layer as a conductive layer, and nonflammable or flame retardant material layers laminated on both outer side surfaces thereof. 2. A waterproof insulating layer is laminated on both front and back surfaces of an electromagnetic wave shield layer as a conductive layer, non-combustible or flame-retardant material layers are laminated on both outer surfaces thereof, and one outer surface of the non-combustible or flame-retardant material layer is laminated. An anti-corrosion electromagnetic wave shield material comprising a stack of finishing material layers.