JPH10189321A - Amorphous metallic thin film laminated composite sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an amorphous metallic thin film laminated composite sheet which has excellent static electricity and electromagnetic wave shielding effects and also excellent impact resistance, resistance against bending force, stain resistance, weather resistance, etc. SOLUTION: An amorphous metallic thin film laminated composite sheet is composed at least of one laminated body formed by laminating a plurality of amorphous metallic thin films, each of which is formed by arranging a plurality of amorphous metallic thin film ribbons in parallel with each other, and at least one coating layer which contains a flexible resin as a main component and laminated upon the laminated body, with at least one flexible resin coating layer having a conducting or semiconducting property.

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 composite sheet. More specifically, the present invention relates to a laminate obtained by laminating and integrating a plurality of amorphous metal thin films formed from a plurality of amorphous metal thin film ribbons arranged in parallel with each other, and a flexible resin coating. And at least one layer of the flexible resin coating layer has conductivity or semi-conductivity. This laminated composite sheet has an excellent shielding effect against electromagnetic waves.

[0002]

2. Description of the Related Art With the development and spread of electronic devices in recent years, these devices and magnetic recording media have been
It is necessary to protect against the adverse effects of static electricity and electromagnetic waves, and the demand for sheet materials such as coating sheet materials and packaging sheet materials as protection materials is increasing.

Conventionally, in order to protect electronic devices from the effects 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 apparatus) or the like, a strong obstacle is easily received by an external electromagnetic wave. Therefore, the MRI is shielded by an iron plate having a thickness of 2 cm. When such a thick shielding material is used, the weight of the device becomes extremely large, and it is difficult to manufacture and process the device. Further, the most serious disadvantage of the iron plate shield is that the iron plate itself tends to be magnetized.

[0004] In order to solve the above-mentioned drawbacks of the conventional electromagnetic wave shielding material, an attempt has been made to use an amorphous metal. Amorphous metal has an excellent shielding effect against electromagnetic waves, and has an advantage that when a load is removed, it immediately returns to its original state and does not take on magnetism.

[0005] However, amorphous metals have the following problems as compared with conventional electromagnetic wave shielding materials (for example, iron plates). (A) Generally, the thickness of the amorphous metal material is 100 μm.
m or less (most of the commercially available amorphous metal thin films are 50 μm
It is difficult to obtain an amorphous metal material having a thickness greater than the above.

(B) Generally, the amorphous metal material is 1
It is supplied in a width of less than 00 mm (most commonly less than 20 mm), and it is difficult to obtain one with a width wider than this. (C) Therefore, a wide and considerable thickness, for example, 1
It is difficult to obtain an amorphous metal material having a thickness greater than 00 μm. (D) The amorphous metal material has low mechanical strength such as tear strength and is easily broken.

[0007]

An object of the present invention is to provide an amorphous metal thin film laminated composite sheet having excellent electromagnetic wave shielding properties, high mechanical strength and excellent durability using an amorphous metal thin film ribbon. is there.

[0008]

According to the present invention, there is provided an amorphous metal thin film laminated composite sheet comprising at least one amorphous metal thin film comprising a plurality of amorphous metal thin film ribbons arranged in parallel with each other. And at least one coating layer laminated on the multilayer body and containing a flexible resin as a main component, wherein at least one of the flexible resin coating layers is conductive or semiconductive. It is characterized by having conductivity.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Attempts have recently been made to use amorphous metals for various applications based on their properties. Generally, an amorphous metal thin film has a width of 2.54-1.
It is supplied as a 0.16 cm ribbon-shaped material, and it is expected that a narrow sheet having a width of 20.32 cm will be supplied in the near future with respect to the expansion of the width. The supplied amorphous metal thin film generally has a thickness of 5 to 50 μm, and very rarely has a thickness of 10 μm.
Some have only a thickness of about 0 μm.

Conventionally, the above-mentioned ribbon-shaped or small (small) width material can be used only as a card case or as a packaging and storage material for small articles.
It was thought that it was almost impossible to use it for a covering sheet requiring a wide width of cm.

In the laminated composite sheet of the present invention, the amorphous metal thin film is used in the same supply width or, if necessary, by bonding it to a desired width.

The above-mentioned protection effect of the electronic device means an effect of absorbing or reflecting the electromagnetic wave energy by the electromagnetic wave shielding means so that the electromagnetic wave energy does not affect the electronic device. The degree of attenuation of the electromagnetic wave energy by the electromagnetic wave shielding means is expressed in a unit of decibel (dB), and as the electromagnetic wave shielding material is larger, the attenuation effect is larger and more preferable.

In the laminated composite sheet of the present invention, its electromagnetic wave shielding effect substantially depends on the shielding effect of the metal thin film contained therein, and is generally preferably at least 30 dB, more preferably at least 60 dB. , 90 dB or more.

The amorphous metal thin film useful in the present invention generally comprises iron as a main component,
It is preferable to select from an amorphous alloy obtained by adding at least one 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
Parts, Si: 1 part, Co: 18 parts of an amorphous alloy),
No. 2826-MB (Fe: 40%, Ni: 38%,
Mo: 4%, B: 18% amorphous alloy) or the like can be used.

[0015] In addition to the above-mentioned alloys containing iron as a main component,
An alloy system containing cobalt as a main component (for example, Co₉₀Zr
_Ten, Co₇₈Si_TenB₁₂, Co₅₆Cr₂₆C₁₈, CO₄₄Mo
₃₆C ₂₀, Co₃₄Cr₂₈Mo₂₀C₁₈), Nickel as main component
Alloy system (for example, Ni₉₀Zr_Ten, Ni₇₈Si
_TenB₁₂, Ni₃₄Cr_{twenty four}Mo_{twenty four}C₁₈And other metals
Alloys (for example, Pd₈₀Si₂₀, Cu₈₀Zr
₂₀, 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 supplied in the form of a ribbon or a narrow sheet as described above,
When these are used in the laminated composite sheet of the present invention, a plurality of ribbon-shaped or thin sheet-shaped amorphous metal thin films are arranged in parallel with each other to form a wide thin film or, if necessary, The opposite side edges are joined by a conductive adhesive or solder 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 so as to extend parallel to the longitudinal axis direction of the obtained laminate, but if they are arranged so as to extend in a direction perpendicular to this, preferable. Further, the amorphous metal thin film may be formed by using amorphous metal powder.

Although the amorphous metal thin film has a shielding effect against an electric field, it has a particularly excellent shielding effect against a magnetic field.

In the laminated composite sheet of the present invention, the amorphous metal thin film may be formed solely from the amorphous metal thin film, or may cover at least one surface of a substrate made of the amorphous metal thin film. It may be composed of a conductive metal plating 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 the conductive metal is plated on at least one surface of the substrate made of the amorphous metal thin film, the obtained amorphous metal thin film has the magnetic field shielding property,
The electric field shielding property of the plating layer is added, so that the entire amorphous metal thin film can exhibit an excellent shielding effect against a wide range of electromagnetic waves from low frequency to high frequency. Further, the conductive metal plating layer has an effect of improving the solder bonding property 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, and more preferably has a thickness of about 0.1 to 5 μm. Further, a rust preventive or other thin protective film may be formed on the surface of the amorphous metal thin film or the metal plating layer.

The amorphous metal thin film has a thickness of 5 to 50 μm as described above, but the amorphous metal thin film laminate included in the laminated composite sheet of the present invention has a thickness of 50 μm or more as a whole. And more preferably a thickness of 100 to 5,000 μm. For this purpose, in the amorphous metal thin film laminate used in the present invention, preferably two 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 laminated composite sheet, it is desirable to laminate a large number of amorphous metal thin films. That is, when an amorphous metal thin film is used by bonding it to a large area, the shielding effect becomes more nonuniform as the area becomes larger, and the effect may decrease or become unstable. In order to solve such a problem and obtain a stable shielding effect, it is desirable to stack a large number of thin films.

The amorphous metal thin film laminate used in the present invention may include at least one amorphous metal thin film with a plating layer and an amorphous metal thin film having no at least one plating layer. As described above, by omitting the plating layer from a part of the amorphous metal thin film, required electromagnetic wave shielding properties can be obtained while lowering the product cost.

When a large number of amorphous metal thin films are laminated and adhered, an adhesive or a pressure-sensitive adhesive should be formed so as not to locally form portions having different thicknesses in the obtained laminate.
It is preferred that the adhesive or pressure-sensitive adhesive be distributed almost uniformly throughout the laminate, thereby maintaining uniformity in thickness and feel.

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 conductive or semi-conductive, and it can have rustproofing properties. There is no particular limitation on the type of the adhesive or the pressure-sensitive adhesive, and any one of existing adhesives or pressure-sensitive adhesives can be 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 depending on the use environment.

The plurality of amorphous metal thin films in the laminate are adhered or adhered to each other by an adhesive or a pressure-sensitive adhesive. In this bonding or adhesion, an adhesive or a pressure-sensitive adhesive is applied and fixed to the entire surface of the amorphous metal thin film which is vertically adjacent to each other and overlaps.

The amorphous metal thin film laminated composite sheet of the present invention has at least one laminate formed by laminating a plurality of amorphous metal thin films, and is laminated on the laminate and contains a flexible resin as a main component. And at least one coating layer. Such a flexible resin coating layer may be formed between a plurality of amorphous metal thin film laminates, may be formed at an arbitrary interval, or at least one of the laminates It may be located on the outermost surface.

At least one of the flexible resin coating layers is conductive or semiconductive. When the conductive or semiconductive flexible resin coating layer is provided between the plurality of amorphous metal thin film laminates, the whole of the plurality of plated or unplated amorphous metal thin film laminates becomes conductive, which is a preferable result. Is obtained. In particular, when an unplated amorphous metal thin film is used, by providing a conductive or semiconductive flexible resin coating layer between the laminates, the electric field shielding property as well as the magnetic field shielding property is improved, and the performance is improved. A laminated composite sheet is obtained.

At least one of the flexible resin coating layers 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 laminated composite sheet of the present invention with desired flexibility, compressive elasticity, buffering properties against impact or pressure, resistance to rupture, and the like. That is, when an external force such as bending acts on the laminated composite sheet, the flexible resin coating layer absorbs the external force by deforming, thereby reducing the elongation and compression of the amorphous metal thin film. And has a cushioning effect of preventing permanent deformation (formation of a fold). Such a laminated composite sheet is useful as a magnetic field shielding sheet such as a nuclear magnetic resonance diagnostic apparatus (MRI), a covering sheet for electronic equipment, a sheet for packaging and storage, a floor sheet, a wall sheet, or a building sheet. is there.

The flexible resin used in the present invention includes:
Natural rubber, neoprene rubber, chloroprene rubber, silicone rubber, Hypalon or other synthetic rubber, or PVC
Resin, ethylene-vinyl acetate copolymer (EVA) resin, acrylic resin, silicone resin, polyurethane resin, polyethylene (PE) resin, polypropylene (P
P) Resins, polyester resins, fluorine-containing resins 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 laminated composite sheet. The flexible resin coating layer is 0.05 mm or more,
More preferably, it has a thickness of 0.05 to 1.0 mm, and preferably contains a conductive substance.

These flexible resin coating layers are formed by a known method such as topping, calendering, coating, dipping, etc. 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 laminate. These rubbers or resins may contain plasticizers, stabilizers, coloring agents, ultraviolet absorbers and the like, and other function-imparting agents such as flame retardants and flame retardants.

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. The flexible resin coating layer is generally formed to a thickness of 50 μm or more, and the thickness is preferably 50 to 500 μm.
0 μm, more preferably 100-3000 μm, even more preferably 200-2000 μm. Further, the flexible resin coating layer used in the present invention can exhibit sufficient flexibility in use even if it has the above-mentioned thickness.

In the laminated composite sheet of the present invention, it is preferable that at least one flexible resin coating layer is disposed on the outermost surface. Further, the outermost flexible resin coating layer includes a base layer made of a flexible and waterproof polymer and a surface layer formed on the base layer and made of an antifouling and weather resistant polymer. Preferably, it is

As the antifouling and weather-resistant polymer used in the present invention, a fluorine-containing resin and an acrylic resin can be used. That is, the antifouling / weatherproof polymer surface layer is formed by sticking a film made of a fluorine-containing resin or an acrylic resin on the base layer.

Generally, fluorine-containing resins are flame-retardant and stain-proof.
Although it is weather resistant, it is difficult to adhere to the surface of the base layer as it is because it is not compatible with ordinary plastic adhesives. Therefore, the surface of the fluorine-containing resin film is subjected to a primer treatment, a corona discharge or a low-temperature plasma treatment, etc., and the adhesion is activated as much as possible. For example, polyvinyl chloride, polyepoxy, polyacryl, polyester resin, etc. Has increased affinity with the adhesive. Normally, the surface treatment of the fluorine-containing resin film is activated by the above treatment. For this purpose, for example, 100-200 V, 40-
Corona discharge treatment is performed under the conditions of 100 μF and a short circuit current of 1 to 2 A. Such a discharge treatment gives the fluorine-containing resin film a desired adhesive ability. However, the surface treatment of the fluorine-containing resin film used in the present invention is not limited to this, and is equal to or better than another surface treatment. Any effect can be used.

Examples of the resin constituting the fluorine-containing resin film include various polyfluoroethylenes synthesized from monomers in which one or more hydrogen atoms of ethylene are substituted with fluorine atoms, for example, polytetrafluoroethylene. And various polychloroethylenes partially containing chlorine, for example, polytrifluorochloroethylene, and the like, but also includes polyvinyl fluoride, polyvinylidene fluoride, polydichlorodifluoroethylene, and the like. The thickness of the film is generally 0.001 mm to 0.5 mm, preferably 5 mm.
Although it is about 50 μm, it can be made thicker or thinner as long as it achieves the purpose of weather resistance, stain resistance and durability, and there is no particular limitation. The fluorine-containing resin film may be mixed with another resin, for example, MMA or the like by mixing or adhering, as long as the object of the present invention is achieved. Commercially available fluorine-containing resin films used in the present invention include Tedlar film (trademark of DuPont), Aflex film (trademark of Asahi Glass Co., Ltd.), and KFC film (trademark of Kureha Chemical Industry Co., Ltd.)
Etc.

In the present invention, it is preferable that the fluorine-containing resin in the form of a film having a substantially smooth surface is adhered to the upper surface of the base layer, but there is also a method of applying a fluorine-containing resin solution or an emulsion. . The fluorine-containing resin film used in the present invention preferably has a tensile strength of 100 kg / cm ² or more.

In the present invention, the antifouling / weather-resistant polymer surface layer may be formed of a polyacryl resin. For this purpose, an acrylic resin film is generally used, but a method of applying a solution or emulsion of an acrylic resin on the base layer and drying may be used.

The acrylic resin film used in the present invention preferably has a tensile strength of 100 kg / cm ² or more, and 1 to 50 g / m ² , preferably 3 to 30 g / m ² .
Weight of ² , or 3 μm or more (usually 3 to 50 μm)
More preferably, it has a thickness of 4 to 30 μm.

The acrylic resin film applied to the present invention may be manufactured by a T-die method, an inflation method, or any other method. Also, stretched film,
Although any of unstretched films may be used, the elongation of the film is preferably about 100 to 300%. As described above, the thickness is usually about 3 to 50 μm, but may be slightly thicker or thinner if sufficient weather resistance and antifouling property are achieved. The film material is a polyalkyl methacrylate-based film, for example, a material mainly composed of methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate, or the like, or a homomonomer such as acrylate, vinyl acetate, vinyl chloride, styrene, acrylonitrile, methacrylonitrile, or the like. Alternatively, a homopolymer or copolymer containing a comonomer as a component is preferably formed into a film. Such a film is adhered to the surface of the base layer using an adhesive or attached by other methods.

In the present invention, the antifouling / weatherproof polymer surface layer formed on the flexible / waterproof polymer base layer is made of polyvinylidene fluoride in addition to the above-mentioned fluorine-containing resin and acrylic resin. A laminate of a resin layer and an acrylic resin layer, or a laminate of a polyvinylidene fluoride resin layer, an acrylic resin layer, and a polyvinyl chloride resin layer (KFC film) may be used. In these laminates, the polyvinylidene fluoride resin layer preferably has a thickness of 2 to 3 μm, the acrylic resin layer has a thickness of 2 to 4 μm, and the polyvinyl chloride resin layer has a thickness of 40 to 45 μm.

In general, the tear strength of an amorphous metal thin film is so low that it is almost equal to 0, and the amorphous metal thin film easily tears at a low load. Further, such an amorphous metal thin film has a relatively low tensile strength and 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 "Tensile strength and elongation 6.1" of "General woven fabric test method"
2.1 (1) Width: 3c according to the A method (strip method)
m, gripping interval: 20 cm, tensile speed: 200 mm / min.
It is relatively weak at 5 kg / 3 cm, average of about 100 kg / 3 cm, and the measured values vary widely. Since amorphous metal thin films are generally provided in a narrow ribbon shape, they are arranged in parallel. When they are made into a sheet, even if they are joined by soldering or adhesive at their opposite side edges, the tensile strength in the lateral direction of this sheet is insufficient, Moreover, there is a problem that the variation is large. Therefore, the laminated composite sheet of the present invention can be applied to a flexible resin coating even when it is used for packaging or coating, or when it is used for an application where local friction is applied or an external force acts locally. It has sufficient practicality because it is reinforced by layers.

In the laminated composite sheet of the present invention, the flexible resin coating layer may be a wallpaper-like sheet layer constituting a wallpaper sheet. In this case, the obtained laminated composite sheet is useful as an electromagnetic wave shielding wallpaper. In the laminated composite sheet of the present invention, at least one of its outermost surfaces has
It may be covered with a flexible resin coating layer.

[0044]

EXAMPLES The amorphous metal thin film laminated composite sheet of the present invention will be further described below with reference to examples. Example 1 Amorphous alloy (81% Fe, 13.5% B, S
i: 3.5%, C: 2%, trademark: METGLAS N
o. 1605 μm thick copper plating was applied to the entire surface of a 2605SC, Allied, 7.62 cm wide, 25 μm thick ribbon. This amorphous metal thin film ribbon is
Approximately 95cm in width with each side edge soldered together
Was prepared. The thus formed three sheets of the amorphous metal thin film with a plating layer are laminated, and the entire surface of one of the opposed thin films has a conductive DOTITE FE-1.
02 (manufactured by Fujikura Kasei Co., Ltd., containing Ag-Cu, acrylic resin adhesive for electromagnetic wave shielding, volume resistance: 10 ^-4 Ω-cm), and these were adhered and a flexible resin coating layer was formed.

A KFC film (trademark; Kureha Chemical Industry Co., Ltd.) was attached on the entire surface of the above-mentioned amorphous metal thin film laminate so that the polyvinyl chloride layer was adhered to the amorphous metal thin film laminate. . On the other side,
A PVC film was stuck. The obtained laminated composite sheet showed an electromagnetic wave shielding property of 50 dB, and was suitable as a film body of an outdoor electromagnetic wave shielding sheet house.

[0046]

The laminated composite sheet of the present invention includes an amorphous metal thin film laminate obtained by laminating a plurality of amorphous metal thin films arranged in parallel with each other. Strength, shock buffering, antifouling,
It has weather resistance and favorable workability, has excellent electromagnetic wave shielding properties, and is useful as an electromagnetic wave shielding coating or as a packaging sheet, rug, or wallpaper sheet. Further, the laminated composite sheet of the present invention can be used in combination with any of intermediate products or finished products in the above-mentioned applications.

Continued on the front page (51) Int.Cl. ⁶ Identification code FI H05B 6/76 H05B 6/76 Z

Claims (15)

[Claims] At least one laminated body formed by laminating a plurality of amorphous metal thin films including a plurality of amorphous metal thin film ribbons arranged in parallel with each other, and laminated on the laminated body, and An amorphous metal thin film laminated composite sheet comprising at least one coating layer containing a flexible resin as a main component, wherein at least one of the flexible resin coating layers is conductive or semiconductive. . 2. The laminated composite sheet according to claim 1, wherein the flexible resin coating layer is formed between a plurality of the amorphous metal thin film laminates. 3. The laminated composite 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. 4. The laminated composite sheet according to claim 1, wherein the flexible resin coating layer has a thickness of 50 μm or more. 5. The laminated composite sheet according to claim 1, wherein the plurality of laminated amorphous metal thin films are bonded and integrated with each other by an adhesive or a pressure-sensitive adhesive. 6. The laminated composite sheet according to claim 5, wherein the adhesive or the pressure-sensitive adhesive has conductivity or semi-conductivity. 7. The semiconductor device according to claim 7, wherein
At least one amorphous metal thin film is formed on the amorphous metal thin film and at least one surface thereof;
The laminated composite sheet according to claim 1, further comprising a plating layer made of at least one kind of conductive metal. 8. The amorphous metal thin film laminate, comprising: at least one amorphous metal thin film with a plating layer;
The laminated composite sheet according to claim 1, comprising: an amorphous metal thin film having no at least one plating layer. 9. 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 laminated composite sheet according to claim 7, comprising: 10. The amorphous metal thin film ribbon,
The laminated composite sheet according to claim 1, wherein the longitudinal side edges are joined to each other by a conductive adhesive or solder to form a single thin film having a desired width. 11. The amorphous metal thin film ribbon,
2. The laminated composite sheet according to claim 1, wherein the longitudinal side edges are joined to each other by an adhesive or a pressure-sensitive adhesive to form an integral thin film having a desired width. 12. The method according to claim 12, wherein the amorphous metal thin film is Fe,
A main component consisting of at least one member selected from the group consisting of Co, Ni, Pd, Cu, Nb and Ti, and B, Si, C, C
o, Ni, Cr, Zr, Nb, Cu, Ti, and Mo
Consisting of at least one member selected from the group consisting of:
The laminated composite sheet according to claim 1. 13. The laminated composite sheet according to claim 1, wherein each of the amorphous metal thin film ribbons has a thickness of 5 to 100 μm. 14. The method according to claim 14, wherein the amorphous metal thin film laminate
The laminated composite sheet according to claim 1, having a total thickness of 0 to 5,000 m. 15. The conductive metal plating layer has a thickness of 0.1 μm.
The laminated composite sheet according to any one of claims 7 to 9, having a thickness of at least m.