JPH0831569A - Amorphous metal thin film-layered sheet - Google Patents

Abstract

PURPOSE:To provide an amorphous metal thin film-layered sheet which has excellent shielding effect against static electricity and electromagnetic waves and sufficiently high impact resistance and strength, high bending resistance and strength for practrical use. CONSTITUTION:An amorphous metal thin film-layered sheet is composed of at least one layered body produced by laminating a plurality of amorphous metal thin films and at least one flexible resin coating layer formed on the layered body. The amorphous metal thin films in the layered body are distributed in not less than one line- or island-like state by an adhesive or a gluing agent and the total surface area of the lines and islands is set to be 1.0-90% of the total sticking surface area. The flexible resin coating layer is put in either one surface among the outermost surface and interfaces of the amorphous metal thin film-layered body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an amorphous metal thin film laminated sheet. More specifically, the present invention relates to an amorphous metal containing a laminate composed of a plurality of amorphous metal thin films laminated and integrated. The present invention relates to a thin film laminated sheet. These have an excellent shielding effect against electromagnetic waves.

[0002]

2. Description of the Related Art In recent years, with the development and popularization of electronic devices, these devices, magnetic recording media, etc.
It is necessary to protect against the adverse effects of static electricity and electromagnetic waves, and as this protective material, sheet materials such as covering sheet materials and packaging sheet materials are in great demand.

In order to protect electronic equipment from the influence of static electricity, a conductive sheet containing a conductive material containing carbon powder, carbon fiber, metal foil or metal powder has been used. However, such a conventional conductive sheet cannot be said to be sufficiently effective for the purpose of protecting electronic devices from the influence of electromagnetic waves. For example, in an MRI (Nuclear Magnetic Resonance Diagnostic Device) or the like, it is easily damaged by external electromagnetic waves, and therefore the MRI is shielded by an iron plate having a thickness of 2 cm. If such a thick shield material is used, the weight of the device becomes extremely large, and the manufacturing and processing thereof are difficult. Further, the most serious drawback of the iron plate shield is that the iron plate itself is easily magnetized.

The use of amorphous metal has been attempted in order to overcome the above-mentioned drawbacks of conventional electromagnetic wave shielding materials. Amorphous metal has an excellent shield effect against electromagnetic waves, and has an advantage that when the load is removed, it immediately returns to its original state and is not magnetized.

However, the amorphous metal has the following problems with respect to the conventional electromagnetic wave shielding material (for example, iron plate). (A) Generally, the thickness of the amorphous metal material is 100 μm.
m or less (most commercial amorphous metal thin films are 50 μm
However, it is difficult to obtain an amorphous metal material having a thickness greater than that.

(B) Generally, the amorphous metal material is 1
It is supplied with a width of 00 mm or less (most commonly 20 mm or less), and it is difficult to obtain one having a width wider than this. (C) Therefore, a wide width and a considerable thickness, for example, 1
It is difficult to obtain an amorphous metal material having a thickness greater than 00 μm. (D) The laminated body obtained by laminating and bonding the amorphous metal thin films has problems that it is difficult to bend and is easily broken.

[0007]

DISCLOSURE OF THE INVENTION The present invention is intended to provide an amorphous metal thin film laminated sheet which is easily bent and is not easily broken by using an amorphous metal thin film.

[0008]

The amorphous metal thin film laminated sheet of the present invention is composed of at least one amorphous metal thin film laminated body, and is laminated on this laminated body and contains at least a flexible resin as a main component. In the amorphous metal thin film laminate, including a single coating layer, a plurality of amorphous metal thin films are laminated on each other and adhered by an adhesive or a pressure-sensitive adhesive, and on the adhesion surface of the amorphous metal thin film, The adhesive or pressure-sensitive adhesive is distributed in one or more lines or in one or more islands, and the total distribution area of the adhesive or pressure-sensitive adhesive is relative to the area of the adhesive surface of the amorphous metal thin film. , 1.0 to 90
%, And the flexible resin coating layer is arranged at any one of the outermost surface of the amorphous metal thin film and the plurality of amorphous metal thin film laminates. To do.

[0009]

[Action] Recently, amorphous metals have been
Attempts have been made to use it in various applications. Amorphous metal thin films are generally supplied as ribbon-shaped materials with a width of 2.54 to 10.16 cm, and it is expected that small width sheets with a width of 20.32 cm will be supplied in the near future for expanding the width. It has been done. The supplied amorphous metal thin film is generally 5 to 50 μm.
Some have a thickness of m and very rarely have a thickness of about 100 μm.

Conventionally, the ribbon-shaped or small (narrow) width material as described above can be used only as a card case or as a packaging material for small articles, which is 100 to 300.
It was thought that it would be almost impossible to use it for a covering sheet that requires a wide width of cm.

The amorphous metal thin film used for the amorphous metal thin film laminated sheet of the present invention is used until the supply width thereof, or if necessary, by bonding it to a desired width.

The above-mentioned effect of protecting the electronic equipment means the effect of absorbing or reflecting the electromagnetic wave energy by the electromagnetic wave shield means so that the electronic equipment is not affected by the electromagnetic wave energy. The degree of electromagnetic wave energy attenuation by the electromagnetic wave shield means is expressed in a unit decibel (dB). As the electromagnetic wave shield material, the larger this value is, the larger the attenuation effect is, which is preferable.

In the amorphous metal thin film laminated sheet of the present invention, its electromagnetic wave shielding effect depends substantially on the shielding effect of the metal thin film contained therein, and is generally 3
It is preferably 0 dB or more, more preferably 60 dB or more, and even more preferably 90 dB or more.

The amorphous metal thin film useful in the present invention generally contains iron as a main component, boron,
It is preferably selected from amorphous alloys obtained by adding one or more selected from silicon, carbon, nickel, cobalt, molybdenum and the like. For example, Allied's trade name METGLAS No. 2605SC (F
e: 81%, B: 13.5%, Si: 3.5%, C:
2% amorphous alloy), No. 2605S-2 (F
e: 78%, B: 13%, Si: 9% amorphous alloy), No. 2605-Co (Fe: 87 parts, B: 14
Part, Si: 1 part, Co: 18 parts amorphous alloy)
, No. 2826-MB (Fe: 40%, Ni: 38
%, Mo: 4%, B: 18% amorphous alloy) and the like.

In addition to the above-mentioned alloys containing iron as a main component,
Alloy system containing cobalt as a main component (for example, Co₉₀Zr
_Ten, Co₇₈Si_TenB_12,Co₅₆Cr₂₆C₁₈, CO₄₄Mo
₃₆C ₂₀, Co₃₄Cr₂₈Mo₂₀C₁₈), The main component is nickel
Alloy system (for example, Ni₉₀Zr_Ten, Ni₇₈Si
_TenB₁₂, Ni₃₄Cr_{twenty four}Mo_{twenty four}C₁₈) And other metals
Alloys containing as a main component (for example, Pd₈₀Si₂₀, Cu₈₀Z
r₂₀, Nb₅₀Ni₅₀, Ti₅₀Cu₅₀) Etc. can also be used.

The amorphous metal thin film may be a perforated thin film as long as it does not substantially affect the electromagnetic wave shielding property.

Since these amorphous metal thin films are often supplied in the form of ribbons or narrow sheets as described above, when they are used in the amorphous metal thin film laminated sheet of the present invention, they may be used as needed. A plurality of ribbon-shaped or narrow sheet-shaped amorphous metal thin films arranged in parallel with each other to form a wide thin film, or if necessary, their opposing side edges are formed by a conductive adhesive or solder. Bonded to form a wide thin film having a desired width. When forming a wide thin film from a plurality of ribbons, the ribbons may be arranged to extend parallel to the longitudinal axis of the resulting laminate, or they may be arranged to extend in a direction perpendicular to this. May be. In addition, the amorphous metal thin film is
You may form using the powder of an amorphous metal. Alternatively, it may be used as a knitted woven fabric-like or non-woven fabric-like sheet from thin wires made of amorphous metal, and this sheet may be used as an amorphous metal thin film.

The amorphous metal thin film has a shielding effect against an electric field, but particularly an excellent shielding effect against a magnetic field.

The amorphous metal thin film used in the amorphous metal thin film laminated sheet of the present invention may be formed of an amorphous metal thin film alone, or a substrate composed of an amorphous metal thin film and at least one surface thereof. It may be composed of a conductive metal plating layer covering the layer.

As the conductive metal for plating, for example, copper,
Nickel, cobalt, iron, aluminum, gold, silver, tin,
Zinc and two or more alloys selected from these can be used. In this way, when a conductive metal is plated on at least one surface of the substrate made of an amorphous metal thin film, the obtained amorphous metal thin film has the electric field shielding property of the plating layer added to the magnetic field shielding property, so that the entire amorphous metal thin film is obtained. It is possible to show an excellent shielding effect against a wide range of electromagnetic waves from low frequency to high frequency. In addition, the conductive metal plating layer,
It also has the effect of improving the solder bondability of the amorphous metal thin film and facilitating the formation of a wide thin film from the amorphous metal thin film ribbon.

The conductive metal plating layer contained in the amorphous metal thin film preferably has a thickness of 0.1 μm or more, more preferably 0.1 to 5 μm. Further, a thin protective film such as a rust preventive may be formed on the surface of the amorphous metal thin film or its metal plating layer.

The amorphous metal thin films each have a thickness of 5 to 50 μm as described above, but the amorphous metal thin film laminate of the present invention has a total thickness of 50 μm.
It is preferable to have a thickness of m or more, and 100 to 5,0
More preferably it has a thickness of 00 μm. Therefore, in the amorphous metal thin film laminated sheet of the present invention, preferably 2 to 200 amorphous metal thin films are laminated and integrated in the thickness direction. In order to enhance and stabilize the shielding effect of the amorphous metal thin film laminated sheet of the present invention, it is desirable to laminate a large number of amorphous metal thin films. That is, when the amorphous metal thin film is bonded to a wide area and used, the larger the area, the more uneven the shielding effect, and the lower the effect or the more unstable. In order to solve such problems and obtain a stable shield effect, it is desirable to stack a large number of thin films.

The amorphous metal thin film laminated sheet of the present invention may include at least one amorphous metal thin film with a plating layer and at least one amorphous metal thin film having no plating layer. Thus, by omitting the plating layer from a part of the amorphous metal thin film, it is possible to obtain the required electromagnetic wave shielding property while reducing the product cost.

When a large number of amorphous metal thin films are laminated and adhered to each other, the adhesion regions formed by the adhesive or the pressure-sensitive adhesive do not overlap each other, so that a portion having a locally different thickness is not formed in the obtained laminate. It is preferable that the adhesives or the adhesives are distributed almost evenly in the laminate so that the adhesive areas of the adhesives do not overlap each other, thereby maintaining the uniformity of thickness and texture.

The adhesive or pressure-sensitive adhesive is used to electrically connect a plurality of laminated amorphous metal thin films to each other.
It is preferably electrically conductive or semi-conductive, and it can also be rustproof. There is no particular limitation on the type of such an adhesive or pressure-sensitive adhesive, and any of the existing ones can be arbitrarily selected and used according to the purpose of use. For example, a material having high cold resistance or a material having high heat resistance may be selected and used according to the use environment.

In general, a plurality of amorphous metal thin films in the laminate are adhered or adhered to each other with an adhesive or a tackifier. In this adhesion or adhesion, when an adhesive or an adhesive is applied and fixed to the entire surfaces of the amorphous metal thin films which are vertically adjacent to each other and overlap each other, when the laminated body is bent, the amorphous materials adhered or adhered to each other. The degree of freedom of mutual displacement between the metal thin films becomes insufficient. This problem,
This is especially noticeable when an adhesive is used. In order to solve such a problem, it is preferable that a plurality of amorphous metal thin films are not adhered or adhered to each other,
In this case, it becomes difficult to integrate a plurality of amorphous metal thin films.

In the amorphous metal thin film laminated sheet of the present invention, the respective amorphous metal thin films are vertically adjacent to each other and overlap each other to be partially adhered or adhered to each other, so that the parts other than the adhered or adhered parts are relatively displaced from each other. Is possible. That is, in the present invention, each amorphous metal thin film is adhered or adhered to at least one linear or island-shaped adhesive or pressure-sensitive adhesive layer with respect to the vertically adjacent and overlapping portions thereof. There is. For example, in a laminated body composed of a plurality of amorphous metal thin films, the constituent amorphous metal thin films are distributed in at least one linear or island shape, or in a mixed state of these, or in a state in which coating lines intersect. It is adhered or tacked by a layer of adhesive or cohesive. A plurality of amorphous metal thin films are adhered to each other and integrated by the adhesion or adhesion in this manner. However, the non-bonded parts of the amorphous metal thin film can be displaced relative to each other in response to bending,
This facilitates bending of the laminate and prevents breakage of the laminate due to bending.

The shape of the adhesive portion may be one or more straight lines, curved lines, or a mixed line of these, and these may intersect. Alternatively, it may consist of one or more island-shaped points, but the total adhesive application area is 1 to 9 with respect to the adhesion area of the amorphous metal thin film.
It is necessary to be within the range of 0%. When the adhesive application area ratio is less than 1%, the adhesive strength of the amorphous metal thin film becomes insufficient, and when it exceeds 90%, the bending property and the bending rupture resistance become insufficient.

The island-shaped or linear-shaped adhesive or pressure-sensitive adhesive application areas contained in the amorphous metal thin film laminate do not overlap with each other so that the laminate does not have uneven thickness locally. It is preferable that the layered product is distributed almost uniformly, whereby a laminate having a substantially uniform solidity can be obtained.

When an amorphous metal thin film is formed from the plurality of amorphous metal thin film ribbons, it is preferable to stack the amorphous metal thin film ribbons so that the ribbon bonding areas do not overlap each other.

The amorphous metal thin film laminated sheet of the present invention is laminated on at least one laminated body obtained by laminating a plurality of amorphous metal thin films as described above, and is laminated on this laminated body, and is flexible. And at least one coating layer containing a resin as a main component. Such a flexible resin coating layer may be formed between a plurality of amorphous metal thin film laminates, may be formed at arbitrary intervals, or at least one of the laminates may be formed. It may be arranged on the outermost surface.

It is desirable that the flexible resin coating layer be conductive or semiconductive. When a conductive or semi-conductive flexible resin coating layer is provided between a plurality of amorphous metal thin film laminates, the whole of the plurality of plated or unplated amorphous metal thin film laminates becomes conductive and is preferable. The result is obtained. In particular, when an unplated amorphous metal thin film is used, by providing a conductive or semi-conductive flexible resin coating layer between the laminates, the magnetic field shielding property as well as the electric field shielding property is improved, resulting in good performance. An amorphous metal thin film laminated sheet is obtained.

At least one layer of the flexible resin coating layer may be formed by sticking a film or sheet made of a flexible resin, and such a film or sheet is porous. Or it may be non-porous.

The flexible resin coating layer can provide the amorphous metal thin film laminated sheet of the present invention with desired flexibility, compressive elasticity, shock absorbing property, shock absorbing property, rupture resistance and the like. That is, when an external force such as bending is applied to the amorphous metal thin film laminated sheet, the flexible resin coating layer absorbs this external force by deforming, and the expansion and compression of the amorphous metal thin film is reduced. Prevents the metal thin film from breaking and breaking,
In addition, it exerts a buffering effect of preventing permanent deformation (crease formation). Such an amorphous metal thin film laminated sheet is useful as a magnetic shield sheet such as a nuclear magnetic resonance diagnostic apparatus (MRI), a covering sheet for electronic equipment, a sheet for packaging and storing, a floor sheet, a wall sheet, or a construction sheet. It is a thing.

The flexible resin used in the present invention includes
Natural rubber, neoprene rubber, chloroprene rubber, silicone rubber, Hypalon and other synthetic rubber, or PVC
Resin, ethylene-vinyl acetate copolymer (EVA) resin, acrylic resin, silicone resin, polyurethane resin, polyethylene (PE) resin, polypropylene (P
P) resin, polyester resin, fluorine-containing resin and other synthetic resins can be used. Such a resin material also has good waterproofness and can impart desired waterproofness, flame retardancy and mechanical strength to the obtained amorphous metal thin film laminated sheet. The flexible resin coating layer is
0.05 mm or more, more preferably 0.05 to 1.0 mm
It is preferable to have a thickness of 1 and to contain a conductive substance.

These flexible resin coating layers may be formed by a known method such as topping, calendering, coating or dipping using the above-mentioned rubber or resin film, solution, paste or straight. It can be formed on the surface of the amorphous metal thin film stack. These rubbers or resins may contain a plasticizer, a stabilizer, a colorant, an ultraviolet absorber and the like, and other function-imparting agents such as a flameproofing agent and a flame retardant.

Conventionally, it has been known to form a resin layer having a thickness of about 1 to 10 μm on the surface of a metal foil for the purpose of rust prevention and corrosion prevention, but the amorphous metal thin film laminated sheet of the present invention is formed. In, the flexible resin coating layer is generally formed to have a thickness of 50 μm or more, and this thickness is preferably 50 to 5000 μm, and more preferably 100.
To 3000 μm, and more preferably 200 to 2
It is 000 μm. Further, the flexible resin coating layer used in the present invention can exhibit sufficient flexibility in use even if it has the above thickness.

In the amorphous metal thin film laminated sheet of the present invention, the flexible resin coating layer may be porous, that is, a foam layer. Such a foamed porous layer may be a rigid foam as long as it has the desired flexibility, but it is generally preferred that it is a flexible foam.

The foamed porous layer has a porosity of 50 to 99%.
(Foaming ratio: 2 to 100 times), preferably 8
It is more preferably 0 to 98% (foaming ratio: 5 to 50 times). Usually, a foaming ratio of 20 to 60 times is used. The compression resistance of the foamed porous layer at 25% compression is 10 kg / cm ² or less, which is practical for some applications, but generally 0.5 kg / cm ² or less, preferably 0.1 kg / cm ² or less. / Cm ² or less is more preferable. The thickness of the foamed porous layer is not particularly limited and can be arbitrarily set according to the application of the amorphous metal thin film laminated sheet, but generally it is preferably in the range of 0.5 to 100 mm. , 1 to 50 mm is more preferable.

The foamed porous layer is bonded to the amorphous metal thin film laminate, but a foamed porous sheet may be prepared in advance and bonded with an adhesive, or For, the adhesive surface portion of the foamed porous sheet may be heat-melted and fused. Further, the foamed porous layer may be formed by chemically foaming on the amorphous metal thin film laminate, or a polymer coating containing bubbles may be applied on the amorphous metal thin film laminate and solidified. Alternatively, it may be formed by a so-called mechanical foaming method.

The coating layer containing the flexible resin foam porous layer as described above may be formed on both sides of the amorphous metal thin film laminate, or may be formed on only one side or in the middle. Good. When it is formed only on one side, even if the coating layer containing the non-porous layer of the flexible resin as described above is bound to the other side of the amorphous metal thin film laminate or to any part. Good.

In general, the tear strength of an amorphous metal thin film is so low that it is almost equal to 0, and the thin film easily tears at a low load. Further, such an amorphous metal thin film is relatively weak in tensile strength and has a large variation in strength. For example, the tensile strength of an amorphous metal thin film having a thickness of 25 μm is measured according to JIS-L-1096 (1979). 6.12 of "General textile test method", Tensile strength and elongation 6.1
Compliant with 2.1 (1) A method (strip method), width: 3c
When measured under the conditions of m, gripping interval: 20 cm, and pulling speed: 200 mm / min, the tensile strength is 65 to 12
5 kg / 3 cm, average of about 100 kg / 3 cm, which is relatively weak, and the measured values vary widely. Amorphous metal thin films are generally provided in a narrow ribbon shape, so these are arranged in parallel. Then, if they are made into a sheet shape, even if these are at the opposite side edges,
There is a problem in that the tensile strength in the lateral direction of this sheet is insufficient even if it is joined with solder or with an adhesive, and the variation is large. Therefore, the amorphous metal thin film laminated sheet of the present invention has flexibility even when it is used for packaging or coating, or when it is used for a purpose where it is locally rubbed or an external force acts locally. Since it is reinforced by the resin coating layer, it has sufficient practicality.

In the amorphous metal thin film laminated sheet of the present invention, the flexible resin coating layer may be a wallpaper sheet layer constituting a wallpaper sheet. In this case, the obtained amorphous metal thin film laminated sheet is useful as an electromagnetic wave shielding wallpaper. In the amorphous metal thin film laminated sheet of the present invention, at least one of the outermost surfaces thereof may be covered with a flexible resin coating layer.

[0044]

EXAMPLES The amorphous metal thin film laminated sheet of the present invention will be further described below with reference to examples. Example 1 Amorphous alloy (Fe: 81%, B: 13.5%, S
i: 3.5%, C: 2%, trademark: METGLAS N
o. 2605SC, Allied, width 7.62 cm, thickness 2
The entire surface of the ribbon-shaped body having a thickness of 5 μm was plated with copper having a thickness of 1 μm. Thirteen amorphous metal thin film ribbons were arranged in parallel and the side edges of the ribbons were soldered together to form a wide thin film having a width of about 95 cm.

Ten amorphous metal thin films with a wide plating layer having a width of 95 cm are laminated, and only the both ends in the length direction are linear (width 10 mm), and a synthetic rubber adhesive (trademark:
SC12N, manufactured by Sony Kelmir Co., Ltd.) was adhered to each other to obtain an integrated amorphous metal thin film laminate. The application area ratio of the adhesive was 2%. This laminate exhibited an electromagnetic wave shielding effect of 90 dB.

Separately, the following composition: Polyvinyl chloride resin 100 parts by weight D. O. P. (Plasticizer) 70 〃 Barium borate (smoke reducing agent) 20 〃 Aluminum hydroxide (flame retardant) 100 〃 Barium sulfate (flame retardant) 200 〃 Barium-zinc stabilizer 2 〃 Ketin black EC 3 〃 resin composition From the above, a film having a width of 100 cm and a thickness of 0.3 mm was prepared.

Two sheets of the above polyvinyl chloride resin film were attached to both sides of the above-mentioned amorphous metal thin film laminate by a calendar, and the portions protruding from both ears of the amorphous metal thin film laminate were adhered to each other. Then, the amorphous metal thin film laminate was packed and sealed between two films.

The obtained amorphous metal thin film laminated sheet has practically sufficient flexibility, flexibility, strength, and workability, even though it contains a large number of amorphous metal thin films, and has 90 dB. The electromagnetic wave shielding effect was shown.

Example 2 The same operation as in Example 1 was performed. However, as an adhesive
Dotite FE-102 (manufactured by Fujikura Kasei Co., containing Ag-Cu, acrylic resin adhesive for electromagnetic wave shielding, volume resistance: 10 ^-4 Ω-cm) having conductivity was used. The obtained amorphous metal thin film laminated sheet exhibited an electromagnetic wave shielding property of 50 dB.

Example 3 The same operation as in Example 1 was performed. However, an acrylic resin adhesive was used instead of the adhesive. The obtained amorphous metal thin film laminated sheet exhibited good flexibility and electromagnetic wave shielding properties similar to those of Example 1.

Example 4 The same operation as in Example 1 was performed. However, first, make a wide sheet of plated amorphous metal thin film, and apply non-plated amorphous metal thin film ribbons on both sides of the adhesive in a straight line with a width of 3 mm at 1.2 cm intervals. The thus-obtained product was laminated and adhered to form a laminate having a three-layer structure. (The coating area ratio of the adhesive was about 20%.) As described above, the layered product obtained by laminating the amorphous metal thin films without plating has an excellent electromagnetic wave shielding property of 40 dB. Indicated.

As described above, the amorphous metal thin ribbon-shaped thin film without plating is sequentially bonded on the entire surface of the wide base material with a pressure sensitive adhesive or an adhesive to widen it and to form a multi-layer. Also, an amorphous metal thin film laminate and a laminated sheet can be manufactured at a low cost by a simple method, and in particular, a road to commercialization of a wide sheet containing an amorphous metal thin film has been opened.

Example 5 Three sets of laminated bodies each consisting of five sheets of the amorphous metal thin film with a wide plating layer obtained in Example 1 were prepared, and between each set of amorphous metal thin films and on the outermost front and back surfaces, there were approximately three sets.ゞ 0.
A 35 mm or approximately 0.33 mm foamed polyurethane sheet was sandwiched and overlapped, and laminated and adhered using one of the following adhesives to obtain an amorphous metal thin film laminated sheet. Adhesive (a) SC-12N (b) Dauite FE-102

The obtained amorphous metal thin film laminated sheet showed preferable elasticity in any of the above-mentioned adhesives, and a preferable sheet for use as a floor sheet (floor material) was obtained. The shielding effect and cushioning effect of the obtained amorphous metal thin film laminated sheet were also good. These have good electromagnetic wave shielding properties and favorable elasticity,
For example, it was useful as an electromagnetic wave shielding rug.

Example 6 The same operation as in Example 5 was performed. However, only the outermost front and back layers in the amorphous metal thin film laminate are composed of plated amorphous metal thin films, and the middle three layers are formed by an amorphous metal thin film ribbon without plating (same as that in Example 1). The sheets were arranged side by side so that there were no gaps, and the front and back layers and the intermediate three layers were adhesively bonded to each other to obtain an amorphous metal thin film laminated sheet. The obtained amorphous metal thin film laminated sheet exhibited a satisfactory electromagnetic wave shielding effect.

[0056]

The amorphous metal thin film laminated sheet of the present invention includes an amorphous metal thin film laminated body formed by laminating a plurality of amorphous metal thin films, and a flexible resin coating layer, but it has practically sufficient flexibility. Since it has flexibility, strength, shock absorption, workability, and excellent electromagnetic wave shielding property, it is used as an electromagnetic wave shielding coating, or as a packaging sheet, rug, or wallpaper sheet. It is useful. Further, the amorphous metal thin film laminated sheet of the present invention can be used in combination with any of the intermediate products or finished products in the above applications.

Claims (19)

[Claims] 1. An amorphous metal thin film laminate comprising at least one layer of an amorphous metal thin film laminate and at least one coating layer laminated on the laminate and containing a flexible resin as a main component. In the body, a plurality of amorphous metal thin films are laminated on each other, and adhered by an adhesive or a pressure-sensitive adhesive, and on the bonding surface of the amorphous metal thin film, the adhesive or pressure-sensitive adhesive is one or more linear, Or, it is distributed in one or more islands, and the total distribution area of the adhesive or pressure-sensitive adhesive is within the range of 1.0 to 90% with respect to the area of the adhesive surface of the amorphous metal thin film, and The flexible resin coating layer is arranged on any one of the outermost surface of the amorphous metal thin film laminate and the plurality of amorphous metal thin film laminates. Amorphous metal thin film laminate sheet to symptoms. 2. The amorphous metal thin film laminated sheet according to claim 1, wherein the adhesive or pressure-sensitive adhesive has conductivity or semi-conductivity. 3. The amorphous metal thin film laminated sheet according to claim 1, wherein the adhesive or pressure-sensitive adhesive application areas between the plurality of laminated amorphous metal thin films are formed at positions that do not overlap each other. 4. In the amorphous metal thin film laminate,
At least one amorphous metal thin film is formed on the at least one surface of the amorphous metal thin film,
The amorphous metal thin film laminated sheet according to claim 1, further comprising a plating layer made of at least one kind of conductive metal. 5. The amorphous metal thin film laminate has at least one amorphous metal thin film with a plated layer,
The amorphous metal thin film laminated sheet according to claim 1, comprising an amorphous metal thin film having no at least one plating layer. 6. The conductive metal plating layer is at least one selected from copper, nickel, cobalt, iron, aluminum, gold, silver, tin, zinc, and an alloy containing at least one selected from the above metals. The amorphous metal thin film laminated sheet according to claim 4, which comprises: 7. The amorphous metal thin film laminated sheet according to claim 1, wherein the amorphous metal thin film comprises a plurality of amorphous metal thin film ribbons arranged in parallel with each other. 8. The amorphous metal thin film ribbon according to claim 7, wherein the amorphous metal thin film ribbons are joined to each other at their longitudinal edges by a conductive adhesive or solder to form an integrated thin film having a desired width. Amorphous metal thin film laminated sheet. 9. The amorphous metal thin film ribbon according to claim 7, wherein the amorphous metal thin film ribbons are bonded to each other at their longitudinal edges by an adhesive or a pressure sensitive adhesive to form an integral thin film having a desired width. Metal thin film laminated sheet. 10. A plurality of amorphous metal thin films comprising the joined amorphous metal thin film ribbons,
The amorphous metal thin film laminated sheet according to claim 4 or 9, wherein the ribbon bonding regions are laminated so as not to overlap each other. 11. The amorphous metal thin film comprises Fe,
A main component having at least one member selected from Co, Ni, Pd, Cu, Nb and Ti, and B, Si, C, C
o, Ni, Cr, Zr, Nb, Cu, Ti, and Mo
At least one member selected from the group consisting of metal-containing additive components contained in the main component,
The amorphous metal thin film laminated sheet according to claim 1. 12. Each of the amorphous metal thin films comprises:
The amorphous metal thin film laminated sheet according to claim 1, which has a thickness of 5 to 100 μm. 13. The amorphous metal thin film laminate has 5 layers.
The amorphous metal thin film laminated sheet according to claim 1, having a total thickness of 0 to 5,000 μm. 14. The conductive metal plating layer has a thickness of 0.1 μm.
The amorphous metal thin film laminated sheet according to claim 4, which has a thickness of m or more. 15. The amorphous metal thin film laminated sheet according to claim 1, wherein the flexible resin coating layer is formed between a plurality of the amorphous metal thin film laminated bodies. 16. The amorphous metal thin film laminate sheet according to claim 1, wherein the flexible resin coating layer is disposed on at least one outermost surface of the amorphous metal thin film laminate. 17. The amorphous metal thin film laminated sheet according to claim 1, wherein the flexible resin coating layer is conductive or semiconductive. 18. The amorphous metal thin film laminated sheet according to claim 1, wherein the flexible resin coating layer has a thickness of 50 μm or more. 19. At least one of the flexible resin coating layers.
The amorphous metal thin film laminated sheet according to claim 1, wherein the layer is porous.