Composite material and method for producing the same

Abstract

To provide a composite material capable of unifying a metal thin plate material and a sheet material without adhesive bonding, and a method for producing the same.SOLUTION: A composite material 1a has: a metal thin plate material 20a, having flexibility, being made of metal, and being in a thin form; and a sheet material 10a, being in the form of a sheet, where both materials are laminated in the thickness direction. The laminated metal thin plate material 20a is provided with a plurality of cut-and-raised portions 30a to hold the sheet material 10a. The cut-and-raised portions 30a unify the laminated metal thin plate material 20a and sheet material 10a.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a composite material in which, for example, a thin metal plate material and a sheet material are laminated in the thickness direction, and a manufacturing method thereof. [Background technology]

[0002] Conventionally, there have been composite materials that have different properties from those of metallic thin plate materials, which are produced by laminating and integrating metallic thin plate materials with non-metallic sheet materials. The composite material described in Patent Document 1 is one such composite material. The composite material described in Patent Document 1 is formed by laminating a nonwoven fabric on the surface of a metal molded body and bonding the two together with an adhesive layer to form an integrated body.

[0003] However, as described above, the composite material described in Patent Document 1 is integrated by bonding a metal thin plate material and another material with an adhesive layer, so that the environment in which it can be used may be limited. In detail, in the case of a composite material in which a metal thin plate material and another material are bonded and integrated, for example, when used in a heated atmosphere, there is a risk that gas will be generated from the adhesive constituting the adhesive layer, or that the adhesive strength will decrease, causing the metal thin plate material and the other material to separate. Conversely, when used in a low-temperature atmosphere, there is a risk that the adhesive layer will harden, causing the deformability and workability of the metal thin plate material to decrease. In this way, there is a risk that the environment in which a composite material in which a metal thin plate material and another material are bonded and integrated may be limited. Therefore, there has been a demand for a composite material that is not integrated by adhesion. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 02-134244 Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE PRESENT EMBODIMENTS Accordingly, an object of the present invention is to provide a composite material capable of integrating a thin metal plate material and a sheet material without bonding, and a method for manufacturing the same. [Means for solving the problem]

[0006] This invention is characterized in that a thin, flexible metal sheet material and a sheet-shaped sheet material are stacked in the thickness direction, and at least one of the stacked metal sheet material and sheet material has a plurality of holding portions formed thereon to hold the other, and the stacked metal sheet material and sheet material are integrated by the holding portions to form a composite material.

[0007] The composite material may be composed of a single sheet material and a single metal thin plate material, a laminated sheet material and a single metal thin plate material, a laminated metal thin plate material and a single sheet material, or a laminated sheet material and a laminated metal thin plate material. The composite material may be composed of a sheet material arranged on only one side of a metal thin plate material, a sheet material arranged on both sides of a metal thin plate material, or a metal thin plate material arranged on both sides of a sheet material. Furthermore, the composite material may be composed of a laminate of a sheet material and a metal thin plate material, and further a laminate of the sheet material and the metal thin plate material.

[0008] According to the present invention, the thin metal plate material and the sheet material can be integrated without bonding. In more detail, at least one of the laminated thin metal plates and the sheet material is formed with a plurality of holding parts for holding the other, and the laminated thin metal plates and the sheet material are integrated by the holding parts. Therefore, the composite material can integrate the laminated thin metal plates and the sheet material without bonding them. Therefore, the usage environment is not limited, and the composite material can be used in various environments, for example, by processing it into a desired shape. The holding portion may be provided on either the thin metal plate material or the sheet material, or on both.

[0009] As an aspect of the present invention, the holding portion may be provided on the thin metal plate material. According to this invention, the sheet material can be firmly held by the holding portion provided on the thin metal plate material.

[0010] In another aspect of the invention, the metal thin plate material may have a cut-out portion that is cut out from another portion and bent and deformed, and the sheet material is sandwiched and held between the cut-out portion and the other portion, and the cut-out portion may be the holding portion.

[0011] According to this invention, without using a separate part, the metal thin plate material is cut out from another part and bent and deformed, and the sheet material is sandwiched and held between the cut-out part which functions as a holding part and the other part, thereby forming a composite material integrating the metal thin plate material and the sheet material.

[0012] In another aspect of the present invention, the thin metal plate material may have a cut-and-raised portion that is cut and raised from another portion toward the sheet material, the cut-and-raised portion biting into and holding the sheet material, and the cut-and-raised portion may be the holding portion.

[0013] According to this invention, without using a separate part, the metal thin plate material is cut and raised from other parts toward the sheet material, and the cut and raised parts functioning as holding parts bite into and hold the sheet material, thereby forming a composite material that integrates the metal thin plate material and the sheet material.

[0014] As a further aspect of the present invention, the cut and raised portion may penetrate the thin metal plate material. According to this invention, the cut and raised portion penetrating the thin metal plate material bites into and holds the sheet material, thereby forming a composite material in which the thin metal plate material and the sheet material are integrated.

[0015] In another aspect of the invention, the thin metal plate material may be provided with a cut-and-raised portion that is cut and raised from another portion toward the sheet material, the cut-and-raised portion biting into the sheet material and sandwiching and holding the sheet material between the cut-and-raised portion and the other portion, and the cut-and-raised portion may be the holding portion.

[0016] According to this invention, without using a separate part, the metal thin plate material is cut and raised from another part toward the sheet material, and the cut and raised part functioning as a retaining part bites into the sheet material and sandwiches and holds the sheet material between the other part, thereby forming a composite material that integrates the metal thin plate material and the sheet material.

[0017] The present invention is also characterized in that it is a method for manufacturing a composite material, which includes a bending process in which a thin, flexible metal thin plate material having a plurality of notches is bent between the notches, a cutting and raising process in which the notches are raised and raised to form cut-and-raised portions, a lamination process in which a sheet-shaped sheet material is laminated in the thickness direction on the bent thin metal plate material, and a bending and reversing process in which the sheet material is pressed against the thin metal plate material and the bent thin metal plate material is bent back.

[0018] According to this invention, in the metal thin plate material bent in the bending process, a cut-and-raised portion that functions as a retaining portion can be formed in the cutting and raising process by cutting and raising the other portion toward the sheet material. Then, in the bending and turning process, a sheet-like sheet material to be laminated in the thickness direction in the lamination process is pressed against the bent metal thin plate material, and the bend of the metal thin plate material is turned back. Therefore, in the bending and turning process, the cut-and-raised portion bites into the sheet material, and the sheet material is sandwiched and held between the other portion and the cut-and-raised portion, and a composite material in which the metal thin plate material and the sheet material are integrated can be formed without using a separate member.

[0019] In another aspect of the present invention, a bent portion that bends back in the thickness direction is provided on the main surface of the metal thin plate material, and the bent portion clamps and holds the sheet material, and the bent portion may be the holding portion.

[0020] According to this invention, without using a separate part, the main surface of the metal thin plate material is bent back in the thickness direction, and the bent back portion which functions as a holding portion sandwiches and holds the sheet material, thereby forming a composite material integrating the metal thin plate material and the sheet material. The sheet material may be sandwiched and held between the bent-back portions functioning as holding portions, or the sheet material may be sandwiched and held between the main surfaces of the metal thin plate material and the bent-back portions.

[0021] The present invention is also characterized in that it is a method for manufacturing a composite material, which includes a lamination process in which a thin, flexible metal sheet material and a sheet-shaped sheet material are laminated in the thickness direction; a wave-forming process in which the laminated metal sheet material and the sheet material are bent in the thickness direction to form a wave-like shape in which concave portions and convex portions are continuous in the main surface direction; and a clamping process in which the convex portions and concave portions that form the wave-like shape are compressed in the main surface direction and tilted in the thickness direction to form a bent portion, and the sheet material is sandwiched between the bent portion.

[0022] According to this invention, the metal thin plate material and the sheet material laminated in the lamination process can be bent in the thickness direction in the wave-shape forming process to form a wave shape in which the concave and convex portions are continuous in the main surface direction. Then, in the clamping process, the convex and concave portions forming the wave shape can be compressed in the main surface direction and tilted in the thickness direction to form a bent-back portion. Therefore, the bent-back portion can clamp and hold the sheet material, and a composite material can be formed by integrating the metal thin plate material and the sheet material without using a separate member.

[0023] As a further aspect of the present invention, the bent portion may have a curved shape with a gentle bending angle. According to the present invention, since no sharply angled curved portions are formed locally in the bent portion, a durable composite material can be formed by integrating the thin metal plate material and the sheet material.

[0024] The present invention is also characterized in that it is a method for manufacturing a composite material, which includes a lamination process in which a thin, flexible metal thin plate material and a sheet-shaped sheet material are laminated in the thickness direction, a wave-forming process in which the laminated metal thin plate material and the sheet material are bent in the thickness direction to form a wave-like shape in which concave and convex portions are continuous in the main surface direction, and a clamping process in which the convex portions and the concave portions that form the wave-like shape are compressed in the main surface direction to form bent portions and the sheet material is clamped by the bent portions, and in the clamping process, a bending limiting body is inserted inside the bending direction of the bent portions in the convex portions and the concave portions to compress the composite material while restricting the bending of the bent portions.

[0025] According to this invention, the metal thin plate material and the sheet material laminated in the lamination process can be bent in the thickness direction in the wave-shape forming process to form a wave shape in which the concave and convex portions are continuous in the main surface direction. Then, in the clamping process, the convex and concave portions forming the wave shape can be compressed in the main surface direction to form a bent-back portion. Therefore, the bent-back portion can sandwich and hold the sheet material, and a composite material in which the metal thin plate material and the sheet material are integrated can be formed without using a separate member. At this time, since no bent portion that is locally bent at an acute angle is formed in the bent-back portion, a durable composite material in which the metal thin plate material and the sheet material are integrated can be formed.

[0026] In another aspect of the invention, the sheet material may be provided with a plurality of through holes penetrating in the thickness direction, and the metal thin plate material may be provided with a plurality of convex anti-pullout portions which pass through the through holes and have an anti-pullout shape to prevent the material from slipping out of the through holes, and the anti-pullout portions may be the retaining portions.

[0027] According to this invention, since the projection passes through the through hole of the sheet material and the pull-out prevention portion provided on the metal thin plate material has a pull-out prevention shape that prevents the pull-out prevention portion from coming out of the through hole without using a separate member, the pull-out prevention portion that functions as a holding portion does not come out of the through hole. Therefore, it is possible to form a composite material in which the metal thin plate material and the sheet material are integrated.

[0028] The present invention is also characterized in that it is a method for manufacturing a composite material which includes a lamination process in which a sheet material which is insulating and has through holes through which the convex portions pass is laminated in the thickness direction over a thin, flexible metal thin plate material having a plurality of convex portions which form a convex shape, and a pull-out prevention process in which the convex portions pass through the through holes and are positioned on the opposite side to the side on which the metal thin plate material is positioned, are processed into a pull-out prevention shape which prevents the convex portions from slipping out of the through holes.

[0029] According to the present invention, a lamination process can be performed to laminate a sheet material having insulating properties and through holes through which the protrusions are inserted onto a thin, flexible metal thin plate material having a plurality of protruding portions that form a convex shape. At this time, the protruding portions of the metal thin plate material can penetrate the through holes of the sheet material. Then, in a shape processing process, the protruding portions pass through the through holes and are processed into a slip-out prevention shape that prevents the protruding portions arranged on the side opposite to the side on which the metal thin plate material is arranged from slipping out of the through holes. Therefore, the protruding portions sandwich and hold the sheet material, and a composite material in which the metal thin plate material and the sheet material are integrated can be formed without using a separate member.

[0030] In another aspect of the invention, the metal thin plate material is provided with a plurality of through holes penetrating in the thickness direction, and the sheet material is provided with a plurality of convex anti-pullout portions which pass through the through holes and have an anti-pullout shape to prevent the sheet material from slipping out of the through holes, and the anti-pullout portions may be the retaining portions.

[0031] According to this invention, since the slip-out prevention portion provided on the sheet material has a convex shape that passes through the through hole of the thin metal plate material and has a slip-out prevention shape that prevents the sheet material from slipping out of the through hole, the slip-out prevention portion that functions as a holding portion does not slip out of the through hole. Therefore, a composite material can be formed by integrating the thin metal plate material and the sheet material.

[0032] As a further aspect of the present invention, a stitching portion may be provided for stitching the laminated thin metal plate material and the sheet material in the thickness direction, and the stitching portion may be the holding portion. According to the present invention, the stitching portion that functions as a holding portion stitches the laminated thin metal plate material and the sheet material in the thickness direction, so that a composite material can be formed by integrating the thin metal plate material and the sheet material.

[0033] As a further aspect of the present invention, the suture portion may be formed of a suture thread made of metal. According to the present invention, a seam having fire resistance and durability can be formed.

[0034] As a further aspect of the present invention, the thin metal plate may have notches, the sheet material being sandwiched and held between the notches, and the notches may serve as the holding portions. According to this invention, the notches provided in the thin metal plate material and functioning as holding portions sandwich and hold the sheet material, thereby forming a composite material integrating the thin metal plate material and the sheet material without using a separate component.

[0035] The present invention is also characterized in that it is a method for manufacturing a composite material, which includes a pulling process in which a tensile force is applied to a thin, flexible metal thin plate material having a plurality of notches so that the notches widen, a lamination process in which a sheet-shaped sheet material is laminated in the thickness direction onto the metal thin plate material with the notches widening, and a clamping process in which the sheet material is pressed against the metal thin plate material to release the tensile force applied thereto, and clamp the sheet material between the notches.

[0036] According to this invention, a tensile force is applied in the pulling process, so that the multiple notches provided in the thin metal plate material, which is a flexible metal, can be widened. Then, in the clamping process, the widened notches are deformed to close by removing the applied tensile force. When the notches deform to close, the sheet material laminated on the metal plate material in the thickness direction in the lamination process is pressed against the metal plate material, so that the sheet material can be sandwiched and held by the notches. Therefore, a composite material can be formed by integrating the metal plate material and the sheet material without using a separate member. Effect of the Invention

[0037] The present invention can provide a composite material capable of integrating a thin metal plate material and a sheet material without bonding, and a method for manufacturing the same. [Brief description of the drawings]

[0038] [Figure 1] FIG. 2 is an explanatory diagram of a composite material according to the first embodiment. [Diagram 2] FIG. 2 is an explanatory diagram illustrating a method for producing a composite material according to the first embodiment. [Diagram 3] FIG. 6 is an explanatory diagram of a composite material according to a second embodiment. [Figure 4] FIG. 6 is an explanatory diagram illustrating a method for producing a composite material according to a second embodiment. [Diagram 5] FIG. 11 is an explanatory diagram of a composite material according to a third embodiment. [Figure 6] FIG. 13 is an explanatory diagram of a composite material according to a fourth embodiment. [Figure 7] FIG. 13 is an explanatory diagram of a composite material according to a fifth embodiment. [Figure 8] FIG. 13 is an explanatory diagram illustrating a method for producing a composite material according to a fifth embodiment. [Figure 9] FIG. 13 is an explanatory diagram illustrating a method for producing a composite material according to a fifth embodiment. [Figure 10] FIG. 13 is an explanatory diagram of a composite material according to a sixth embodiment. [Figure 11] FIG. 13 is an explanatory diagram of a composite material according to a seventh embodiment. [Figure 12]FIG. 13 is a cross-sectional view of a main portion of a composite material according to an eighth embodiment. [Figure 13] FIG. 13 is an explanatory diagram illustrating a manufacturing method of a composite material according to the eighth embodiment. [Figure 14] FIG. 13 is an explanatory diagram of a composite material according to the ninth embodiment. [Figure 15] FIG. 19 is an explanatory diagram of a composite material according to a tenth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0039] An embodiment of the present invention will now be described with reference to the drawings. FIG. 1 shows an explanatory diagram of a composite material 1a of the first embodiment, and FIG. 2 shows an explanatory diagram for explaining a manufacturing method of the composite material 1a of the first embodiment.

[0040] In detail, Fig. 1(a) shows a cross-sectional view of the main part of the composite material 1a of the first embodiment, and Fig. 1(b) shows a cross-sectional view of the main part of the composite material 1a' of another embodiment. Fig. 2(a) shows a front view of the main part of the metal thin plate material 20a bent in the bending process, Fig. 2(b) shows a front view of the main part of the metal thin plate material 20a formed by the cut-and-raised part 30a in the cutting and raising process, Fig. 2(c) shows a front view of the main part in a state where the sheet material 10a is laminated on the metal thin plate material 20a in the lamination process, and Fig. 2(d) shows a front view of the main part in a state where the sheet material 10a is pressed against the metal thin plate material 20a in the bending and turning process. 1 and 2, only a part of the composite material 1a is shown, and the size and shape of the composite material 1a are not specified.

[0041] As shown in FIG. 1, the composite material 1a of the first embodiment is formed by laminating a sheet material 10a and a thin metal plate material 20a in the thickness direction (the vertical direction in FIG. 1) and integrating them by a cut-and-raised portion 30a formed in the thin metal plate material 20a.

[0042] The sheet material 10a is, for example, a sheet-like paper material formed to an appropriate thickness, and has flexibility and insulation properties. The sheet material 10a used in the composite material 1a is formed to a thickness about three times that of a metal thin plate material 20a described later, but is not limited to this thickness.

[0043] The thin metal plate 20a is a thin aluminum alloy plate having an appropriate thickness, and has excellent electrical conductivity and workability. The metal thin plate material 20a is not limited to being made of an aluminum alloy, but may be made of any suitable metal, such as stainless steel or steel.

[0044] The thin metal plate 20a has a plurality of cut-and-raised portions 30a that are cut and raised from other portions. The cut-and-raised portions 30a are louver-shaped, and are configured as a pair of two cut-and-raised portions 30a cut in opposite directions, and are cut and raised in a substantially V-shape as shown in Fig. 1. A plurality of cut-and-raised portions 30a are provided at appropriate intervals on the main surface of the metal thin plate material 20a.

[0045] The cut-and-raised portion 30a thus configured functions as a holding portion that holds the sheet material 10a to be laminated on the thin metal plate material 20a. More specifically, the cut-and-raised portion 30a protrudes from the main surface of the thin metal plate material 20a toward the laminated sheet material 10a side, and bites into the sheet material 10a while sandwiching and holding the sheet material 10a between the other portion of the thin metal plate material 20a and the cut-and-raised portion 30a, thereby integrating the sheet material 10a and constituting the composite material 1a.

[0046] Next, a method for producing the composite material 1a will be described with reference to FIG. First, a plurality of slits 31a are provided for forming the cut-and-raised portions 30a. As shown in Fig. 2(a), a flat metal thin plate material 20a is bent between the slits 31a into a substantially V-shape (bending process).

[0047] The metal thin plate material 20a bent in the bending process is cut and raised from the slits 31a to form the cut and raised portions 30a (cut and raised process), as shown in Fig. 2(b). It is noted that either the bending process or the cut and raised process may be performed first.

[0048] Next, the sheet material 10a is laminated on the metal thin plate material 20a from which the cut-and-raised portion 30a has been cut and raised (lamination process). More specifically, as shown in Fig. 2(c), the sheet material 10a is laminated on the side of the metal thin plate material 20a from which the cut-and-raised portion 30a protrudes (the upper side in Fig. 2).

[0049] At this time, the tip of the cut-and-raised portion 30a slightly bites into the bottom surface side of the sheet material 10a, but the center is raised from the metal thin plate material 20a bent into an approximately V-shape as shown in Fig. 2(c). Therefore, as shown in Fig. 2(d), the sheet material 10a is pressed against the metal thin plate material 20a, and further, the approximately V-shaped metal thin plate material 20a is bent back to a flat plate shape by applying a force of arrow F (bending back process).

[0050] In the composite material 1a bent back into a flat plate shape by the bending back process as shown in Fig. 1, the cut-and-raised parts 30a bite into the bottom side of the sheet material 10a, and the sheet material 10a is sandwiched between the other parts of the metal thin plate material 20a and the cut-and-raised parts 30a. Therefore, the sheet material 10a can be formed by integrating the sheet material 10a with the metal thin plate material 20a.

[0051] As described above, the composite material 1a is formed by stacking a thin, flexible metal thin plate material 20a and a sheet-shaped sheet material 10a in the thickness direction, and the stacked thin metal plate material 20a has a plurality of cut-and-raised portions 30a that hold the sheet material 10a. The stacked thin metal plate material 20a and the sheet material 10a are integrated by the cut-and-raised portions 30a, so that the thin metal plate material 20a and the sheet material 10a can be integrated without bonding them.

[0052] More specifically, a plurality of cut-and-raised portions 30a that hold the sheet material 10a are formed on the laminated thin metal plate materials 20a, and the laminated thin metal plate materials 20a and the sheet material 10a are integrated by the cut-and-raised portions 30a. Therefore, the composite material 1a can integrate the laminated thin metal plate materials 20a and the sheet material 10a without bonding them. Therefore, the use environment is not limited, and the composite material 1a can be used in various environments, for example, by processing it into a desired shape.

[0053] Furthermore, the sheet material 10a has insulating properties, and the cut-and-raised portions 30a are provided on the metal thin plate material 20a. Therefore, the insulating composite material 1a is formed on the side on which the sheet material 10a is provided, and the sheet material 10a can be firmly held by the cut-and-raised portions 30a provided on the metal thin plate material 20a.

[0054] Furthermore, the metal thin plate material 20a is provided with a cut-and-raised portion 30a cut and raised from another portion toward the sheet material 10a, and the cut-and-raised portion 30a bites into the sheet material 10a and sandwiches and holds the sheet material 10a between itself and another portion of the metal thin plate material 20a. Therefore, without using a separate member, the cut-and-raised portion 30a cut and raised from another portion of the metal thin plate material 20a toward the sheet material 10a bites into the sheet material 10a and sandwiches and holds the sheet material 10a between itself and another portion, thereby forming a composite material 1a in which the metal thin plate material 20a and the sheet material 10a are integrated.

[0055] In addition, the process includes a bending process in which a thin, flexible metal thin plate material 20a having a plurality of slits 31a formed therein is bent between the notches, a cutting and raising process in which the slits 31a are raised and raised to form cut-and-raised portions 30a, a lamination process in which a sheet-shaped sheet material 10a is laminated in the thickness direction on the bent thin metal plate material 20a, and a bending and returning process in which the sheet material 10a is pressed against the thin metal plate material 20a and the bent thin metal plate material 20a is bent back.

[0056] In the metal thin plate material 20a bent in the bending process, the other portion is cut and raised toward the sheet material 10a, and the cut and raised portion 30a can be formed in the cutting and raising process. Then, in the bending back process, the sheet material 10a, which is a sheet to be laminated in the thickness direction in the lamination process, is pressed against the bent thin metal plate material 20a, and the bend of the thin metal plate material 20a is bent back. Therefore, in the bending back process, the cut-and-raised portion 30a bites into the sheet material 10a, and the sheet material 10a is sandwiched and held between other parts of the thin metal plate material 20a, and a composite material 1a in which the thin metal plate material 20a and the sheet material 10a are integrated can be manufactured without using a separate member.

[0057] Furthermore, since the sheet material 10a is made of paper, the metal thin plate material 20a and the sheet material 10a can be integrated to form a composite material 1a that combines the properties of the metal thin plate material 20a and the properties of the paper sheet material 10a.

[0058] As shown in FIG. 1(b), a composite material 1a' may be constructed by disposing a metal thin plate material 40a made of the same material as the metal thin plate material 20a but not having a cut-and-raised portion 30a on the bottom side of the metal thin plate material 20a in the composite material 1a. This allows the metal thin plate material 40a to seal the through holes formed by the cut-and-raised portions 30a in the thickness direction of the composite material 1a'. The metal thin plate material 40a can be integrated with the metal thin plate material 20a by welding or the like, but they may be integrated and then laminated with the sheet material 10a, or the metal thin plate material 40a may be disposed on the metal thin plate material 20a laminated with the sheet material 10a and integrated by an appropriate method.

[0059] Next, a composite material 1b according to a second embodiment will be described with reference to the drawings. FIG. 3 shows an explanatory diagram of a composite material 1b of the second embodiment, and FIG. 4 shows an explanatory diagram for explaining a manufacturing method of the composite material 1b of the second embodiment.

[0060] Specifically, Fig. 3(a) shows a schematic perspective view of the composite material 1b, and Fig. 3(b) shows an exploded perspective view of the composite material 1b. Fig. 4(a) shows a front view of the main parts of the state in which the sheet material 10b and the metal thin plate material 20b are arranged, Fig. 4(b) shows a front view of the main parts in the lamination process in which the sheet material 10b and the metal thin plate material 20b are laminated, Fig. 4(c) shows a front view of the main parts in the assembly process in which the metal thin plate material 20b is pressed against the sheet material 10b to assemble it, and Fig. 4(d) shows a cross-sectional view of the main parts of a composite material 1b' of another embodiment. 3 and 4, only a part of the composite material 1b is shown, and the size and shape of the composite material 1b are not specified.

[0061] As shown in Figures 3 and 4, the composite material 1b of the second embodiment is formed by laminating a sheet material 10b and a thin metal plate material 20b in the thickness direction (the vertical direction in Figure 3), and integrating the thin metal plate material 20b by multiple cut-out portions 30b.

[0062] The sheet material 10b and the thin metal plate material 20b are made of the same material as the above-mentioned sheet material 10a and the thin metal plate material 20a, and therefore a description thereof will be omitted. The sheet material 10b used in the composite material 1b is formed to a thickness about three times that of the metal thin plate material 20b described later, but is not limited to this thickness. The metal thin plate material 20b is also not limited to being made of an aluminum alloy, and may be made of any suitable metal.

[0063] The thin metal plate 20b has a plurality of cut-out portions 30b which are cut out from another portion and bent. More specifically, a plurality of cut-out portions 30b, each cut and raised in the same direction, are arranged in a lattice shape at appropriate intervals.

[0064] The cut-out portion 30b thus configured functions as a holding portion that holds the sheet material 10b to be laminated on the metal thin plate material 20b. In more detail, the cut-out portion 30b protrudes from the main surface of the metal thin plate material 20b toward the laminated sheet material 10b, and bites into the sheet material 10b while sandwiching and holding the sheet material 10b between the other portion of the metal thin plate material 20b and the cut-out portion 30b, thereby integrating the sheet material 10b and constituting the composite material 1b.

[0065] Next, a method for producing the composite material 1b will be described with reference to FIG. First, as shown in FIG. 4(a), a sheet material 10b is placed on the side of a flat metal thin plate material 20b on which a plurality of cutout portions 30b are provided, from which the cutout portions 30b protrude.

[0066] 4(b), the sheet material 10b and the thin metal plate material 20b are laminated (lamination step) in such a way that the tip of the cut-out portion 30b is inserted into the bottom surface of the sheet material 10b. Furthermore, as shown in FIG. 4(c), the metal thin plate material 20b is pressed against the sheet material 10b and assembled (assembly step).

[0067] In this assembly process, the cut-out portion 30b bites into the inside of the sheet material 10b, and is pressed against the metal thin plate material 20b, so that the sheet material 10b is sandwiched between the cut-out portion 30b and other portions of the metal thin plate material 20b. Therefore, the sheet material 10b can be configured by integrating the sheet material 10b with the metal thin plate material 20b.

[0068] As described above, the composite material 1b has the same effects as the composite material 1a, and also has the following effects. The metal thin plate material 20b is provided with a cut-out portion 30b that is cut out from another portion and bent, and the sheet material 10b is sandwiched and held between the cut-out portion 30b and the other portion. Therefore, without using a separate member, the metal thin plate material 20b is cut out from another portion of the metal thin plate material 20b and bent, and the sheet material 10b is sandwiched and held between the cut-out portion 30b that functions as the cut-out portion 30b and the other portion, thereby forming a composite material 1b in which the metal thin plate material 20b and the sheet material 10b are integrated.

[0069] As shown in Fig. 4(d), a composite material 1b' may be constructed by disposing a metal thin plate material 40b made of the same material as the metal thin plate material 20b but not having a cut-out portion 30b on the bottom side of the metal thin plate material 20b in the composite material 1b. This allows the composite material 1b' to seal the through hole formed by the cut-out portion 30b and penetrating in the thickness direction. The metal thin plate material 40b can be integrated with the metal thin plate material 20b by welding or the like, but it may also be integrated and then laminated with the sheet material 10b, or the metal thin plate material 40b may be disposed on the metal thin plate material 20b laminated with the sheet material 10b and integrated by an appropriate method.

[0070] Next, a composite material 1c according to a third embodiment will be described with reference to the drawings. FIG. 5 shows an explanatory diagram of a composite material 1c according to the third embodiment. In detail, Figure 5(a) shows a schematic diagram of the essential parts when sheet material 10c and metal thin plate material 20c are laminated, Figure 5(b) shows a schematic diagram of the essential parts when convex portions 31c and concave portions 32c are formed in a continuous wavy shape, Figure 5(c) shows a schematic diagram of the essential parts when compressed so that convex portions 31c and concave portions 32c are close to each other, and Figure 5(d) shows a schematic diagram of the essential parts when inclined bent portion 30c is formed.

[0071] In addition, FIG. 5 illustrates only a cut-out portion of the composite material 1c, and does not specify the size or shape of the composite material 1c.

[0072] As shown in FIG. 5, a composite material 1c of the third embodiment is formed by laminating a sheet material 10c and a thin metal plate material 20c in the thickness direction (the vertical direction in FIG. 1) and integrating them with a bent portion 30c that is bent back in the thickness direction.

[0073] The sheet material 10c and the thin metal plate material 20c are also made of the same material as the sheet material 10a and the thin metal plate material 20a described above, and therefore the description thereof will be omitted. The sheet material 10c used in the composite material 1c is formed to a thickness approximately equal to that of the thin metal plate material 20c described below, but is not limited to this thickness. The thin metal plate material 20c is also not limited to being made of an aluminum alloy, and may be made of any suitable metal.

[0074] The composite material 1c includes a plurality of bent portions 30c formed by laminating the thus configured sheet material 10c and the metal thin plate material 20c and bending them back. More specifically, the bent-back portion 30c is formed by bending the sheet material 10c and the metal thin plate material 20c in a laminated state, bringing them into close contact with each other, and tilting them. As a result, the bent-back portion 30c sandwiches and holds the sheet material 10c between the metal thin plate materials 20c that are generally M-shaped when viewed from the front, forming the composite material 1c. Note that a plurality of bent-back portions 30c are formed throughout the composite material 1c.

[0075] Next, a method for producing the composite material 1c will be described with reference to FIG. First, as shown in FIG. 5(a), a flat metal thin plate material 20c and a sheet material 10c are laminated together (lamination step).

[0076] Then, as shown in FIG. 5(b), the sheet material 10c and the metal thin plate material 20c laminated in the lamination process are subjected to uneven processing to form triangular protrusions 31c and V-shaped recesses 32c into a continuous wave shape in one direction (the left-right direction in FIG. 5) (wave-shape forming process).

[0077] Furthermore, the sheet material 10c and the thin metal plate material 20c that have been formed into a corrugated shape in the corrugation process are compressed in one direction (the left-right direction in FIG. 5) so that the protrusions 31c approach each other (see FIG. 5(c)). As a result, the protrusions 31c and the recesses 32c become substantially U-shaped.

[0078] Then, the sheet is compressed in one direction (left and right direction in FIG. 5) and is loaded in the thickness direction by, for example, a roller so that adjacent protruding portions 31c are inclined in one direction, and closely contacting bent-back portions 30c are formed (sandwiching process). Therefore, the sheet material 10c is sandwiched between the metal thin plate materials 20c at the closely contacting bent-back portions 30c inclined in one direction to form an integrated sheet material 10c.

[0079] As described above, the composite material 1c has the same effects as the composite material 1a, and also has the following effects. A bent-back portion 30c that bends back in the thickness direction is provided on the main surface of the metal thin plate material 20c, and the sheet material 10c is sandwiched and held by the bent-back portion 30c. Therefore, without using a separate member, the metal thin plate material 20c is bent back in the thickness direction on the main surface, and the sheet material 10c is sandwiched and held by the bent-back portion 30c, thereby forming a composite material 1c in which the metal thin plate material 20c and the sheet material 10c are integrated. The sheet material 10c may be sandwiched and held between the bent-back portions 30c functioning as bent-back portions 30c, or the sheet material 10c may be sandwiched and held between the main surface of the metal thin plate material 20c and the bent-back portions 30c.

[0080] In addition, the following steps are performed: a lamination process in which a thin, flexible metal thin plate material 20c and a sheet-like sheet material 10c are laminated in the thickness direction; a wave-forming process in which the laminated thin metal plate material 20c and the sheet material 10c are bent in the thickness direction to form a wave shape in which the concave portions 32c and the convex portions 31c are continuous in the main surface direction; and a clamping process in which the convex portions 31c and the concave portions 32c forming the wave shape are compressed in the main surface direction and tilted in the thickness direction to form the bent portion 30c, and the sheet material 10c is clamped by the bent portion 30c.

[0081] Therefore, in the wave-shape forming step, the metal thin plate material 20c and the sheet material 10c laminated in the lamination step can be bent in the thickness direction to form a wave shape in which the recesses 32c and the protrusions 31c are continuous in the main surface direction. Then, in the sandwiching step, the protrusions 31c and the recesses 32c forming the wave shape can be compressed in the main surface direction and tilted in the thickness direction to form the bent-back portion 30c. Therefore, the bent-back portion 30c sandwiches and holds the sheet material 10c, and a composite material 1c can be formed by integrating the metal thin plate material 20c and the sheet material 10c without using a separate member.

[0082] Next, a composite material 1d according to a fourth embodiment will be described with reference to the drawings. FIG. 6 shows an explanatory diagram of a composite material 1d according to the fourth embodiment. In detail, Figure 6(a) shows a schematic diagram of the essential parts when sheet material 10d and metal thin plate material 20d are laminated, Figure 6(b) shows a schematic diagram of the essential parts when convex portions 31d and concave portions 32d are formed in a continuous wavy shape, Figure 6(c) shows a schematic diagram of the essential parts when compressed so that convex portions 31d and concave portions 32d are close to each other, and Figure 6(d) shows a schematic diagram of the essential parts when the jig is removed and bent portion 30d is formed. In addition, FIG. 6 illustrates only a cut-out portion of the composite material 1d, and does not specify the size or shape of the composite material 1d.

[0083] The composite material 1d of the third embodiment is formed by laminating a sheet material 10d and a thin metal plate material 20d in the thickness direction (vertical direction in Figure 6) in the same manner as the composite material 1c described above, and integrating them by a bent portion 30d that is bent back in the thickness direction (see Figure 6).

[0084] The sheet material 10d and the thin metal plate material 20d are made of the same material as the above-mentioned sheet material 10c and the thin metal plate material 20c, and therefore a description thereof will be omitted. Similar to the composite material 1c, the composite material 1d has a plurality of bent portions 30d formed by bending a laminate of a sheet material 10d and a thin metal plate material 20d made of the same material as the above-mentioned sheet material 10c and thin metal plate material 20c.

[0085] In more detail, unlike bent-back portion 30c, which is formed by bending back sheet material 10d and thin metal plate material 20d while they are stacked, adjoining them, and then tilting them, bent-back portion 30d is formed in an approximately 3 / 4 circle shape and is adjacent to one side (the left-right direction in Figure 6).

[0086] As a result, the sheet material 10d is sandwiched and held between the metal thin plate materials 20d at the bent-back portions 30d formed in a substantially 3 / 4 circle shape to form the composite material 1d. Note that a plurality of bent-back portions 30d are formed throughout the composite material 1d.

[0087] Next, a method for producing the composite material 1d will be described with reference to FIG. First, as shown in FIG. 6(a), a flat metal thin plate material 20d and a sheet material 10d are laminated (lamination process).

[0088] Then, as shown in Fig. 6(b), the sheet material 10d and the metal thin plate material 20d laminated in the lamination process are processed to have a concave-convex shape, so that triangular convex portions 31d and V-shaped concave portions 32d are formed in a continuous wave shape in one direction (the left-right direction in Fig. 6) (wave-shape forming process). At this time, a bending restriction body 40d with a circular cross section is placed in the concave portion 32d to restrict the bending radius from becoming smaller than a predetermined diameter.

[0089] 6(c), the sheet material 10d and the metal thin plate material 20d formed into a corrugated shape in the corrugation forming process are compressed in one direction (left and right direction in FIG. 6) so that the protruding parts 31d approach each other, forming the bent-back parts 30d that are in close contact in one direction (clamping process). In the clamping process, the bending restricting body 40d is compressed while being placed in the recessed parts 32d, so that the bending radius of the bent-back parts 30d is restricted from becoming smaller than a predetermined diameter.

[0090] Then, the bending control body 40d, which controls the bending radius of the bent portion 30d from becoming smaller than a predetermined diameter, is removed (removal process), and the sheet material 10d is sandwiched between the metal thin plate materials 20d at the closely contacted bent portion 30d to form an integrated composite material 1d.

[0091] As described above, the composite material 1d has the same effects as the composite material 1a, and can also have the following effects. A bent portion 30d that bends back in the thickness direction is provided on the main surface of the metal thin plate material 20d, and the sheet material 10d is sandwiched and held by the bent portion 30d, so that a composite material 1d can be constructed by integrating the metal thin plate material 20d and the sheet material 10d without using a separate member.

[0092] The method includes a lamination process in which a thin metal thin plate material 20d made of a flexible metal and a sheet-like sheet material 10d are laminated in the thickness direction, a wave-like forming process in which the laminated thin metal plate material 20d and the sheet material 10d are bent in the thickness direction to form a wave-like shape in which the recesses 32d and the protrusions 31d are continuous in the main surface direction, and a wave-like forming process in which the protrusions 31d and the recesses 32d forming the wave-like shape are compressed in the main surface direction to form a bent-back portion 30d, and the sheet material 10d is sandwiched between the bent-back portion 30d. In the clamping process, a bending control body 40d is inserted on the inside of the bending direction of the bent-back portion 30d at the convex portion 31d and the concave portion 32d, and the bent-back portion 30d is compressed while controlling the bending. Since the bent-back portion 30d has a curved shape with a gradual bending angle, no sharp-angled portions are locally formed in the bent-back portion 30d, and therefore a durable composite material 1d can be constructed by integrating the metal thin plate material 20d and the sheet material 10d.

[0093] Next, a composite material 1e according to a fifth embodiment will be described with reference to the drawings. FIG. 7 shows an explanatory diagram of a composite material 1e of the fifth embodiment, and FIGS. 8 and 9 show explanatory diagrams for explaining a manufacturing method of the composite material 1e of the fifth embodiment.

[0094] Specifically, Fig. 7(a) shows a perspective view of the composite material 1e, and Fig. 7(b) shows an AA end view of Fig. 7(a). Fig. 8(a) shows a perspective view of a state in which the sheet material 10e is arranged on the metal thin plate material 20e (arrangement process), and Fig. 8(b) shows a perspective view of a state in which the sheet material 10e is laminated on the metal thin plate material 20e (lamination process). Fig. 9(a) shows an AA end view of a state in which the sheet material 10e is arranged on the metal thin plate material 20e (arrangement process), and Fig. 9(b) shows an AA end view of a state in which the sheet material 10e is laminated on the metal thin plate material 20e (lamination process). 7 to 9, only a part of the composite material 1e is shown, and the size and shape of the composite material 1e are not specified.

[0095] As shown in Figures 7 to 9, the composite material 1e of the fifth embodiment is formed by laminating a sheet material 10e and a thin metal plate material 20e in the thickness direction (vertical direction in Figure 7) and integrating them by a slip-out prevention portion 30e formed on the thin metal plate material 20e.

[0096] The sheet material 10e and the thin metal plate material 20e are made of the same material as the above-mentioned sheet material 10a and the thin metal plate material 20a, and therefore the description thereof will be omitted. The sheet material 10e used in the composite material 1e is formed to a thickness about half that of the thin metal plate material 20e described later, but is not limited to this thickness. The thin metal plate material 20e is also not limited to being made of an aluminum alloy, and may be made of any suitable metal.

[0097] The sheet material 10e has a plurality of through holes 11e through which the later-described slip-out prevention portions 30e pass in the thickness direction. More specifically, the through holes 11e are arranged in a lattice pattern at appropriate intervals.

[0098] The thin metal plate 20e is provided with a plurality of slip-out prevention portions 30e formed in a convex shape so as to protrude from other portions. The slip-out prevention portion 30e has a concave upper surface and a generally disk-like shape with a tip side (upper side in Figure 7) that is slightly larger in diameter than the diameter of the through-hole 11e, and is formed into a slip-out prevention shape that is higher than the thickness of the sheet material 10e.

[0099] As shown in FIG. 8, the anti-pullout portion 30e is initially formed in an approximately truncated cone shape having a height greater than the thickness of the sheet material 10e and a diameter slightly smaller than the diameter of the through hole 11e, and is formed into the above-mentioned anti-pullout shape by a shaping process described later.

[0100] The pull-out prevention portion 30e configured in this manner functions as a holding portion that holds the sheet material 10e to be laminated on the metal thin plate material 20e. In detail, the pull-out prevention portion 30e protrudes from the main surface of the metal thin plate material 20e toward the laminated sheet material 10e, penetrates the through-hole 11e of the sheet material 10e, and prevents the sheet material 10e from being pulled out from the upper surface side thereof, thereby holding and integrating the sheet material 10e and constituting the composite material 1e.

[0101] Next, a method for producing the composite material 1e will be described with reference to FIGS. First, as shown in FIG. 8(a) and FIG. 9(a), a sheet material 10e is placed on a flat metal thin plate material 20e (placement step). In this arrangement step, the sheet material 10e is arranged on the side of the metal thin plate material 20e from which the undeformed pull-out prevention portion 30e protrudes. Also, the sheet material 10e is arranged so that the through hole 11e of the sheet material 10e faces the undeformed pull-out prevention portion 30e of the metal thin plate material 20e.

[0102] 8(b) and 9(b), the sheet material 10e and the thin metal plate material 20e are laminated together in a lamination process, whereby the upper portion of the undeformed slip-out prevention portion 30e penetrates the through-hole 11e and protrudes to the upper surface side of the sheet material 10e.

[0103] An upper portion of the pull-out prevention portion 30e protruding from the upper surface side of the sheet material 10e is processed into a pull-out prevention shape that prevents the metal thin plate material 20e from slipping out of the through-hole 11e as shown in Fig. 7 (shape processing step). Therefore, it is possible to configure an integrated sheet material 10e by sandwiching and restricting the metal thin plate material 20e between the main surface of the sheet material 10e and the pull-out prevention portion 30e in the thickness direction without the pull-out prevention portion 30e slipping out of the through-hole 11e through which it passes.

[0104] As described above, the composite material 1e has the same effects as the composite material 1a described above, and can also have the following effects. The sheet material 10e is provided with a plurality of through holes 11e penetrating in the thickness direction, and the metal thin plate material 20e is provided with a plurality of convex anti-pullout portions 30e that pass through the through holes 11e and have an anti-pullout shape that prevents the metal thin plate material 20e from slipping out of the through holes 11e, and the anti-pullout portions 30e are holding portions. Therefore, without using a separate member, the anti-pullout portions 30e that pass through the through holes 11e penetrating in the thickness direction provided in the sheet material 10e and that are arranged at the upper portion opposite to the side where the metal thin plate material 20e is arranged do not slip out of the through holes 11e. Therefore, a composite material 1e can be formed by integrating the metal thin plate material 20e and the sheet material 10e.

[0105] In addition, a lamination process is performed in which a sheet material 10e that is insulating and has through holes 11e through which the pre-deformation pull-out prevention portions 30e are inserted is laminated on a flexible thin metal thin plate material 20e that is made of a thin metal and has a plurality of pre-deformation pull-out prevention portions 30e that are convex in shape, in the thickness direction so that the pre-deformation pull-out prevention portions 30e pass through the through holes 11e, and a shape processing process is performed in which the pre-deformation pull-out prevention portions 30e that pass through the through holes 11e and are positioned on the opposite side to the side on which the metal thin plate material 20e is positioned are processed into a pull-out prevention shape that prevents the pre-deformation pull-out prevention portions 30e from slipping out through the through holes 11e.

[0106] Therefore, the sheet material 10e having insulation and through holes 11e through which the pre-deformation pull-out prevention parts 30e are inserted can be laminated on the metal thin plate material 20e having a plurality of convex pre-deformation pull-out prevention parts 30e. At this time, the pre-deformation pull-out prevention parts 30e of the metal thin plate material 20e can penetrate the through holes 11e of the sheet material 10e. Then, in the shape processing step, the metal thin plate material 20e passes through the through holes 11e and can be processed into a pull-out prevention shape that prevents the pre-deformation pull-out prevention parts 30e arranged on the opposite side to the side on which the metal thin plate material 20e is arranged from slipping out of the through holes 11e. Therefore, the pull-out prevention parts 30e sandwich and hold the sheet material 10e between themselves and other parts of the metal thin plate material 20e, and a composite material 1e in which the metal thin plate material 20e and the sheet material 10e are integrated can be formed without using a separate member.

[0107] Next, a composite material 1f according to a sixth embodiment will be described with reference to the drawings. FIG. 10 shows an explanatory diagram of a composite material 1f according to the sixth embodiment. In detail, Figure 10(a) shows a cross-sectional view of a key part of the composite material 1f, Figure 10(b) shows a cross-sectional view of a key part in a state where a sheet material 10f and a metal thin plate material 40f are arranged on a metal thin plate material 20f (arrangement process), and Figure 10(c) shows a cross-sectional view of a key part in a state where a sheet material 10f is stacked on a metal thin plate material 20f (stacking process). In addition, FIG. 10 illustrates only a cut-out portion of the composite material 1f, and does not specify the size or shape of the composite material 1f.

[0108] As shown in Fig. 10(a), the composite material 1f of the sixth embodiment is formed by stacking and integrating a sheet material 10f, a metal thin plate material 20f, and a metal thin plate material 40f in this order in the thickness direction (the vertical direction in Fig. 10(a)). Specifically, the composite material 1f is integrated by sandwiching a pull-out prevention portion 30f formed on the sheet material 10f between the metal thin plate material 20f and the metal thin plate material 40f.

[0109] The sheet material 10f and the thin metal plate material 20f are also made of the same material as the sheet material 10a and the thin metal plate material 20a described above, and therefore the description thereof will be omitted. The thin metal plate material 40f is made of the same material as the thin metal plate material 20f, but does not have the through-holes 21f described below.

[0110] The sheet material 10f used in the composite material 1f is formed to a thickness about half that of the metal thin plate material 20f described later, but is not limited to this thickness. The metal thin plate material 20f is also not limited to being made of an aluminum alloy, and may be made of an appropriate metal. The metal thin plate material 20f and the metal thin plate material 40f are made of the same material, but the metal thin plate material 40f may be configured to have a different thickness than the metal thin plate material 20f, or may be configured of a different metal type.

[0111] Further, the thin metal plate material 20f has a plurality of through holes 21f through which slip-out prevention portions 30f (described later) pass in the thickness direction. For example, the through holes 21f are arranged in a lattice pattern at appropriate intervals.

[0112] The sheet material 10f is provided with a plurality of pull-out prevention portions 30f formed in a convex shape so as to protrude from other portions. The anti-slip portion 30f is composed of a cylindrical portion that protrudes downward from other portions of the sheet material 10f and passes through the through hole 21f, and a disk-shaped portion whose tip (the lower end in Figure 10) is slightly larger in diameter than the diameter of the through hole 21f.

[0113] As shown in FIG. 10(b), the anti-pullout portion 30f is initially formed in an approximately truncated cone shape having a height greater than the thickness of the metal thin plate material 20f and a diameter slightly smaller than the diameter of the through hole 21f, and is formed into the above-mentioned anti-pullout shape by a shaping process described later.

[0114] The pull-out prevention portion 30f thus configured functions as a holding portion that holds the sheet material 10f to be laminated on the thin metal plate material 20f. In detail, the pull-out prevention portion 30f protrudes from the main surface of the sheet material 10f toward the laminated thin metal plate material 20f, penetrates the through hole 21f of the thin metal plate material 20f, and the disk-shaped portion of the pull-out prevention portion 30f is sandwiched and held between the bottom surface around the through hole 21f in the thin metal plate material 20f and the upper surface of the thin metal plate material 40f, and is integrated to form the composite material 1f.

[0115] Next, a method for producing the composite material 1f will be described. First, as shown in FIG. 10(b), a sheet material 10f is placed on the top surface side of a flat metal thin plate material 20f, and a metal thin plate material 40f is placed on the bottom surface side (placement step).

[0116] In this arrangement step, the metal thin plate material 20f is arranged on the side of the sheet material 10f from which the undeformed pull-out prevention portion 30f protrudes. Also, the metal thin plate material 20f is arranged so that the through hole 21f of the metal thin plate material 20f faces the undeformed pull-out prevention portion 30f of the sheet material 10f. The metal thin plate material 40f may be arranged after the lamination step described later.

[0117] 10(c), the metal thin plate material 20f and the sheet material 10f are laminated together in a lamination process, whereby the upper portion of the undeformed slip-out prevention portion 30f penetrates the through-hole 21f and protrudes toward the bottom surface side of the metal thin plate material 20f.

[0118] The lower part of the pull-out prevention part 30f protruding toward the bottom side of the metal thin plate material 20f is sandwiched between the bottom surface around the through hole 21f of the metal thin plate material 20f and the upper surface of the metal thin plate material 40f, and is deformed to have a disk-shaped part of the pull-out prevention part 30f and is processed into a pull-out prevention shape that prevents the pull-out prevention part 30f from coming out of the through hole 21f (shape processing step). Therefore, it is possible to configure the metal thin plate material 20f by sandwiching and restricting the metal thin plate material 20f in the thickness direction between the main surface of the sheet material 10f and the pull-out prevention part 30f without the pull-out prevention part 30f coming out of the through hole 21f through which it passes.

[0119] As described above, the composite material 1f has the same effects as the composite material 1a, and can also have the following effects. A plurality of through holes 21f penetrating in the thickness direction are provided in the metal thin plate material 20f, and a plurality of anti-pullout portions 30f which are convex and pass through the through holes 21f and have an anti-pullout shape which prevents the sheet material 10f from slipping out through the through holes 21f are provided in the sheet material 10f, and because the anti-pullout portions 30f are retaining portions, the anti-pullout portions 30f which function as retaining portions do not slip out of the through holes 21f, and a composite material 1f can be formed by integrating the sheet material 10f and the metal thin plate material 20f.

[0120] Next, a composite material 1g according to a seventh embodiment will be described with reference to the drawings. FIG. 11 shows an explanatory diagram of a composite material 1g according to the seventh embodiment. In detail, Figure 11(a) shows a cross-sectional view of a key part of composite material 1g, Figure 11(b) shows a cross-sectional view of a key part of the arrangement process in which sheet material 10g and metal thin plate material 20g are arranged, Figure 11(c) shows a cross-sectional view of a key part of the lamination process in which sheet material 10g and metal thin plate material 20g are laminated, and Figure 4(d) shows a cross-sectional view of a key part of composite material 1g' of another embodiment. In addition, FIG. 11 illustrates only a cut-out portion of the composite material 1g, and does not specify the size or shape of the composite material 1g.

[0121] As shown in Figure 11, the composite material 1g of the seventh embodiment is formed by stacking a sheet material 10g and a thin metal plate material 20g in the thickness direction (the vertical direction in Figure 11), and sewing the stacked sheet material 10g and the thin metal plate material 20g together at a seam 30g.

[0122] The sheet material 10g and the thin metal plate material 20g are also made of the same material as the above-mentioned sheet material 10a and the thin metal plate material 20a, and therefore a description thereof will be omitted. The sheet material 10g used in the composite material 1g is formed to have a thickness approximately equal to that of the metal thin plate material 20g described below, but is not limited to this thickness. The metal thin plate material 20g is also not limited to being made of an aluminum alloy, and may be made of any suitable metal.

[0123] The thin metal plate 20g is provided with a plurality of through holes 21g at appropriate intervals, which pass through a seam 30g, which will be described later.

[0124] The stitching portion 30g is formed in the form of a thread of the same material as the thin metal plate material 20g, and two stitching portions are provided by sewing together. More specifically, the stitching portion 30g is a set of two threads constituting an upper thread and a lower thread. The stitching portions 30g are sewn together in a so-called sewing machine stitching manner. Therefore, the stitching portion 30g is formed with a diameter that allows the two threads to pass through the through holes 21g provided in the thin metal plate material 20g. The material of the stitching portion 30g is not limited to the above-mentioned materials, and any appropriate material can be used as long as it has appropriate strength and deformability.

[0125] The seam 30g configured in this manner functions as a holding portion that holds the sheet material 10g to be laminated on the thin metal plate material 20g. In more detail, the seam 30g passes through the through hole 21g of the thin metal plate material 20g, penetrates the sheet material 10g laminated on the thin metal plate material 20g, and sews and integrates the sheet material 10g and the thin metal plate material 20g to form a composite material 1g.

[0126] Next, a method for producing the composite material 1g will be described with reference to FIG. First, as shown in FIG. 11(b), a sheet material 10g is placed on a flat metal thin plate material 20g (placement step).

[0127] Then, as shown in FIG. 11(c), the sheet material 10g and the metal thin plate material 20g are laminated in a lamination process. Then, the material passes through the through-holes 21g of the thin metal plate material 20g, penetrates the sheet material 10g, and is sewn in the thickness direction at a pair of seams 30g to form an integrated sheet material 10g.

[0128] As described above, the composite material 1g has the same effects as the composite material 1a, and can also have the following effects. A stitching portion 30g is provided to stitch the laminated thin metal plate material 20g and the sheet material 10g in the thickness direction, and the stitching portion 30g, which functions as a holding portion, stitches the laminated thin metal plate material 20g and the sheet material 10g in the thickness direction. Therefore, a composite material 1g can be formed by integrating the thin metal plate material 20g and the sheet material 10g. Furthermore, since the seam 30g is made of a metal sewing thread made of the same material as the thin metal plate material 20g, the seam 30g can be made to have fire resistance and durability.

[0129] 11(d), a composite material 1g' may be constructed by disposing a metal thin plate material 40g made of the same material as the metal thin plate material 20g but without a through hole 21g on the bottom side of the metal thin plate material 20g in the composite material 1g. This allows the through hole 21g penetrating in the thickness direction of the composite material 1g' to be sealed. The metal thin plate material 40g can be integrated with the metal thin plate material 20g by welding or the like, but the metal thin plate material 40g may also be disposed on the metal thin plate material 20g laminated with the sheet material 10g and integrated by an appropriate method.

[0130] Next, a composite material 1h according to an eighth embodiment will be described with reference to the drawings. FIG. 12 shows a cross-sectional view of a main part of a composite material 1h of the eighth embodiment, and FIG. 13 shows an explanatory diagram for explaining a manufacturing method of the composite material 1h of the eighth embodiment. In detail, FIG. 13(a) shows a cross-sectional view of a key portion of the metal thin plate material 20h, and FIG. 13(b) shows a cross-sectional view of a key portion during a pulling process in which a tensile force is applied to the metal thin plate material 20h to open the incision 30h.

[0131] Fig. 13(c) shows a cross-sectional view of the main part of the lamination process in which the sheet material 10h is laminated in the thickness direction on the thin metal plate material 20h in which the incision 30h is expanding. Fig. 13(d) shows a cross-sectional view of the main part in the state in which the sheet material 10h is pressed against the thin metal plate material 20h in the sandwiching process.

[0132] FIG. 12 shows an enlarged view of part a, and FIG. 13 shows an enlarged view of part b in FIG. 13(d).

[0133] 12 and 13, only a portion of the composite material 1h is shown, and the size and shape of the composite material 1h are not specified.

[0134] As shown in Figures 12 and 13, the composite material 1h of the eighth embodiment is formed by stacking a sheet material 10h and a metal thin plate material 20h in the thickness direction (vertical direction in Figure 12) and sandwiching the sheet material 10h between cuts 30h formed in the metal thin plate material 20h to integrate them.

[0135] The sheet material 10h and the thin metal plate material 20h are made of the same material as the sheet material 10a and the thin metal plate material 20a described above, and therefore a description thereof will be omitted. The sheet material 10h used in the composite material 1h is formed to have a thickness about half the thickness of the metal thin plate material 20h described later, but is not limited to this thickness. The metal thin plate material 20h is also not limited to being made of an aluminum alloy, and may be made of any suitable metal.

[0136] The thin metal plate 20h has a plurality of cuts 30h spaced at predetermined intervals. The cuts 30h are slits that penetrate the metal thin plate 20h in the thickness direction, and are formed so that all the cuts 30h extend in the same direction. In this embodiment, the cuts 30h extend in the front-to-back direction of the paper.

[0137] The cut 30h configured in this manner functions as a holding portion that holds the sheet material 10h to be laminated on the metal thin plate material 20h. In detail, as shown in the enlarged view of part a in Fig. 12, the cut 30h provided in the metal thin plate material 20h sandwiches and holds a part of the bottom surface of the sheet material 10h, integrating it, and forming a composite material 1h.

[0138] Next, a method for producing the composite material 1h will be described with reference to FIG. First, as shown in Fig. 13(b), a tensile force Fp is applied to the flat metal thin plate material 20h to widen the incision 30h (pulling process). Specifically, a tensile force Fp is applied to the metal thin plate material 20h in a direction substantially perpendicular to the extension direction of the incision 30h. This makes it possible to efficiently widen the incision 30h provided in the metal thin plate material 20h. Note that by continuing to apply the tensile force Fp to the metal thin plate material 20h, the widened state of the incision 30h can be maintained.

[0139] Then, as shown in FIG. 13(c), a sheet material 10h is laminated on the metal thin plate material 20h with the widened cuts 30h (lamination step). In this state, when the sheet material 10h is pressed against the metal thin plate material 20h, a part of the bottom surface of the sheet material 10h is bitten into the widened notch 30h, as shown in the enlarged view of part b in FIG.

[0140] When the tensile force Fp applied to the metal thin plate material 20h is released with a part of the bottom surface of the sheet material 10h biting into the widened notch 30h, the notch 30h closes due to the elastic force of the metal thin plate material 20h, so that a part of the bottom surface of the sheet material 10h is sandwiched between the notch 30h (sandwiching process). In the sandwiching process, as shown in Fig. 12, a part of the bottom surface of the sheet material 10h is sandwiched and held between the notch 30h, and an integrated sheet material 10h can be formed.

[0141] As described above, the composite material 1h has the same effects as the composite material 1a, and also has the following effects. The thin metal plate material 20h has cuts 30h, and the sheet material 10h is sandwiched and held between the cuts 30h, and the cuts 30h function as holding portions. Therefore, the cuts 30h provided in the thin metal plate material 20h and functioning as holding portions sandwich and hold the sheet material 10h, and a composite material 1h can be formed by integrating the thin metal plate material 20h and the sheet material 10h without using a separate member.

[0142] The method also includes a pulling step in which a tensile force Fp is applied to a thin metal sheet material 20h made of flexible metal and having a plurality of notches 30h so as to widen the notches 30h, a lamination step in which a sheet-shaped sheet material 10h is laminated in the thickness direction on the thin metal sheet material 20h with the widening notches 30h, and a clamping step in which the sheet material 10h is pressed against the thin metal sheet material 20h to eliminate the applied tensile force Fp and clamp the sheet material 10h between the notches 30h. Therefore, the pulling force Fp is applied in the pulling step, so that the plurality of notches 30h provided in the thin metal sheet material 20h made of flexible metal can be widened.

[0143] Then, in the clamping process, the widened incision 30h is deformed to close by removing the applied tensile force Fp. When the incision 30h is deformed to close, the sheet material 10h laminated on the metal thin plate material 20h in the lamination process in the thickness direction is pressed against the metal thin plate material 20h, so that the sheet material 10h can be sandwiched and held by the incision 30h. Therefore, a composite material 1h can be formed by integrating the metal thin plate material 20h and the sheet material 10h without using a separate member.

[0144] Next, a composite material 1i according to a ninth embodiment will be described with reference to the drawings. FIG. 14 shows an explanatory diagram of a composite material 1i according to the ninth embodiment. In detail, Figure 14(a) shows a cross-sectional view of a key portion of composite material 1i, Figure 14(b) shows a cross-sectional view of a key portion when sheet material 10i is arranged on a metal thin plate material 20i, and Figure 14(c) shows a cross-sectional view of a key portion of composite material 1i' of another embodiment.

[0145] In addition, FIG. 14 illustrates only a cut-out portion of the composite material 1i, and does not specify the size or shape of the composite material 1i.

[0146] As shown in Figure 14, the composite material 1i of the ninth embodiment is formed by stacking a sheet material 10i and a metal thin plate material 20i in the thickness direction (the vertical direction in Figure 14) to form a metal thin plate material 20i, and integrating them by a cut-and-raised portion 30i that bites into the sheet material 10i.

[0147] The sheet material 10i and the thin metal plate material 20i are also made of the same material as the above-mentioned sheet material 10a and the thin metal plate material 20a, and therefore a description thereof will be omitted. The sheet material 10i used in the composite material 1i is formed to have a thickness about three times that of the metal thin plate material 20i described later, but is not limited to this thickness. The metal thin plate material 20i is also not limited to being made of an aluminum alloy, and may be made of any suitable metal.

[0148] The thin metal plate 20i has a plurality of cut-and-raised portions 30i which are cut and raised from other portions. The cut-and-raised portion 30i is cylindrical and protrudes upward toward the side where the sheet material 10i is disposed, and is provided at appropriate intervals on the main surface of the metal thin plate material 20i. The cut-and-raised portion 30i is substantially cylindrical and has a through hole 31i therein that penetrates the metal thin plate material 20i.

[0149] The cut-and-raised portion 30i thus configured functions as a holding portion that holds the sheet material 10i to be laminated on the metal thin plate material 20i. More specifically, the cut-and-raised portion 30i protrudes from the main surface of the metal thin plate material 20i toward the laminated sheet material 10i, and bites into and holds the sheet material 10i to integrate it, thereby constituting the composite material 1i.

[0150] Next, a method for producing the composite material 1i will be described with reference to FIG. First, as shown in FIG. 14(b), the sheet material 10i is placed on the side of the flat metal thin plate material 20i from which the cut-and-raised portions 30i protrude.

[0151] Then, by stacking the sheet material 10i on the metal thin plate material 20i so that the cut-and-raised portion 30i penetrates into the bottom surface of the sheet material 10i, as shown in Figure 14(a), the cut-and-raised portion 30i penetrates into the inside of the sheet material 10i from the bottom surface and holds it in place, thereby forming an integrated sheet material 10i.

[0152] As described above, the composite material 1i can achieve the same effects as the composite material 1a described above, and can also achieve the following effects. The metal thin plate material 20i is provided with a cut-and-raised portion 30i that is cut and raised from another portion toward the sheet material 10i, and the cut-and-raised portion 30i bites into and holds the sheet material 10i, and the cut-and-raised portion 30i is a holding portion. Therefore, without using a separate member, the metal thin plate material 20i is cut and raised from another portion toward the sheet material 10i, and the cut-and-raised portion 30i that functions as a holding portion bites into and holds the sheet material 10i, thereby forming a composite material 1i in which the metal thin plate material 20i and the sheet material 10i are integrated.

[0153] In addition, the cut-and-raised portion 30i has a through-hole 31i penetrating the thin metal plate material 20i. Therefore, when the cut-and-raised portion 30i bites into the sheet material 10i, the sheet material 10i is also bitten into the through-hole 31i and held therein, thereby improving the holding force and forming a composite material 1i in which the thin metal plate material 20i and the sheet material 10i are integrated.

[0154] As shown in Fig. 14(c), a composite material 1i' may be constructed by disposing a metal thin plate material 40i made of the same material as the metal thin plate material 20i but not having a through hole 31i on the bottom side of the metal thin plate material 20i in the composite material 1i. This allows the through hole 31i penetrating in the thickness direction of the composite material 1i' to be sealed. The metal thin plate material 40i can be integrated with the metal thin plate material 20i by welding or the like, but they may be integrated and then laminated with the sheet material 10i, or the metal thin plate material 40i may be disposed on the metal thin plate material 20i laminated with the sheet material 10i and integrated by an appropriate method.

[0155] Next, a composite material 1j according to a tenth embodiment will be described with reference to the drawings. FIG. 15 shows an explanatory diagram of a composite material 1j according to the tenth embodiment. In detail, Figure 15(a) shows a cross-sectional view of a key portion of metal thin plate material 20j, Figure 15(b) shows a cross-sectional view of a key portion when sheet material 10j is placed on metal thin plate material 20j, and Figure 15(c) shows a cross-sectional view of a key portion when sheet material 10j is stacked on metal thin plate material 20j. In addition, FIG. 15 illustrates only a cut-out portion of the composite material 1j, and does not specify the size or shape of the composite material 1j.

[0156] As shown in FIG. 15, the composite material 1j of the tenth embodiment is formed by laminating a sheet material 10j and a thin metal plate material 20j in the thickness direction (the vertical direction in FIG. 15) and integrating them with cut-and-raised portions 30j formed in the thin metal plate material 20j.

[0157] The sheet material 10j and the thin metal plate material 20j are also made of the same material as the above-mentioned sheet material 10a and the thin metal plate material 20a, and therefore a description thereof will be omitted. The sheet material 10j used in the composite material 1j is formed to have a thickness about three times that of the metal thin plate material 20j described later, but is not limited to this thickness. The metal thin plate material 20j is also not limited to being made of an aluminum alloy, and may be made of any suitable metal.

[0158] The thin metal plate 20j has a plurality of cut-and-raised portions 30j that are cut and raised from other portions. The cut-and-raised portions 30j are shaped like upward spikes, and are provided at appropriate intervals on the main surface of the thin metal plate material 20j. The cut-and-raised portions 30j are formed by cutting and raising about half the thickness of the thin metal plate material 20j.

[0159] The cut-and-raised portion 30j thus configured functions as a holding portion that holds the sheet material 10j to be laminated on the metal thin plate material 20j. More specifically, the cut-and-raised portion 30j protrudes from the main surface of the metal thin plate material 20j toward the laminated sheet material 10j, and bites into and holds the sheet material 10j to integrate it, thereby constituting a composite material 1j.

[0160] Next, a method for producing the composite material 1j will be described with reference to FIG. First, as shown in Fig. 15(b), the sheet material 10j is placed on the flat metal thin plate material 20j. At this time, the sheet material 10j is placed on the tip side of the cut-and-raised portion 30j with respect to the metal thin plate material 20j.

[0161] Then, as shown in FIG. 15(c), a sheet material 10j is laminated on a metal thin plate material 20j having cut-and-raised portions 30j protruding upward like thorns. At this time, when the sheet material 10j is pressed against the metal thin plate material 20j and laminated, the cut-and-raised portion 30j bites into the bottom surface of the sheet material 10j.

[0162] Then, the laminated sheet material 10j and the metal thin plate material 20j are shifted along the main surfaces to form a composite material 1j as shown in FIG. 15(a). Specifically, the sheet material 10j is shifted relative to the metal thin plate material 20j along the main surface of the metal thin plate material 20j toward the base end side of the cut-and-raised portion 30j. As a result, the sheet material 10j enters the gap between the metal thin plate material 20j and the lower part of the cut-and-raised portion 30j, and the cut-and-raised portion 30j is further firmly embedded in the bottom surface of the sheet material 10j.

[0163] In this manner, the cut-and-raised portions 30j provided on the thin metal plate material 20j against which the sheet material 10j is pressed bite into and hold the bottom surface of the sheet material 10j, thereby forming an integrated sheet material 10j.

[0164] As described above, the composite material 1j has the same effects as the composite material 1a described above, and can also have the following effects. The thin metal plate material 20j is provided with a cut-and-raised portion 30j that is cut and raised from another portion toward the sheet material 10j, and the cut-and-raised portion 30j bites into and holds the sheet material 10j. Therefore, without using a separate member, the thin metal plate material 20j is cut and raised from another portion toward the sheet material 10j, and the cut-and-raised portion 30j that functions as a holding portion bites into and holds the sheet material 10j, thereby forming a composite material 1j that integrates the thin metal plate material 20j and the sheet material 10j.

[0165] As described above, in the configuration of the present invention and the correspondence between the configuration and the above-mentioned embodiment, the metal thin plate material of the present invention corresponds to the metal thin plate materials 20a to 20j, Similarly, The sheet materials correspond to the sheet materials 10a to 10j. The holding portion corresponds to the cut-and-raised portions 30a, 30i, and 30j, the cut-out portion 30b, the bent-back portions 30c and 30d, the slip-out prevention portion 30e, the stitching portion 30g, and the cut 30h. The composite materials correspond to composite materials 1a to 1j. The cut-and-raised portions correspond to cut-and-raised portions 30a, 30i, and 30j. The turning portion corresponds to the turning portion 30c and the turning portion 30d. The slip-out prevention portion corresponds to the slip-out prevention portion 30e, The stitching is rated to 30g. The cut-out portion corresponds to cut-out portion 30b, The cutting depth corresponds to 30h. The convex portions correspond to the convex portions 31c and 31d. The recessed portions correspond to the recesses 32c and 32d. The bending restriction body corresponds to the bending restriction body 40d, The through hole corresponds to the through hole 11e, The pulling force corresponds to the pulling force Fp, but is not limited to the above embodiment.

[0166] For example, although the sheet materials (10a to 10j) are described as general paper materials, they may be functional papers having various functions. Examples of functional papers include waterproof paper having water resistance, greaseproof paper having oil resistance, heat-resistant paper having heat resistance, functional paper having superior strength and durability to general paper materials, and anti-slip paper having a high friction coefficient, and other papers having desired functions according to the application.

[0167] Furthermore, the sheet materials (10a to 10j) do not have to be made of paper, but may be made of nonwoven fabric. The nonwoven fabric material may be a general nonwoven fabric material or a high-performance nonwoven fabric having various functions. The high-performance nonwoven fabric may be, for example, a nonwoven fabric having a single function such as water repellency, water shielding, antibacterial properties, deodorizing properties, oil absorption, sound absorption, moisture absorption and release, high water retention, or a heat shielding function that reflects radiant heat, or a nonwoven fabric having multiple functions such as light shielding and moisture permeability, or water shielding and moisture permeability. It may also be a nonwoven fabric made of glass fibers.

[0168] Even in this case, it is possible to integrate the metal thin plate material 20 and the sheet material 10, which is a nonwoven fabric material, without using a separate component, to form a composite material 1 that combines the properties of the metal thin plate material 20 and the properties of the sheet material 10, which is a nonwoven fabric material.

[0169] The above-mentioned paper material or nonwoven fabric material may be used as sheet material 10 after being subjected to a surface treatment such as painting or coating. In this case, in addition to the effects obtained with a composite material 1 using a paper material or nonwoven fabric material that has not been surface-treated as sheet material 10, the effects due to the function of the surface treatment can be further achieved.

[0170] Furthermore, the sheet material 10 may be a glass foil having twistability and flexibility. As long as the glass foil has torsional properties and flexibility, it is thin (several microns), light, and pliable, and has functions such as heat resistance, durability, barrier properties, chemical resistance, etc. Therefore, it is possible to integrate the thin metal plate material 20 and the sheet material 10, which is glass foil, without using a separate member, to form a composite material having both the properties of the thin metal plate material 20 and the properties of the glass foil.

[0171] The above-mentioned composite materials 1a to 1j are constructed by laminating one sheet material (10a to 10j) and one metal thin plate material (20a to 20j) and integrating them. In contrast, the composite material 1 may be constructed by laminating a sheet material 10 in which a plurality of sheets are laminated and a single metal thin plate material 20, a metal thin plate material 20 in which a plurality of sheets are laminated and a single sheet material 10, or a sheet material 10 in which a plurality of sheets are laminated and a plurality of metal thin plate materials 20. The composite material 1 may be constructed by arranging the sheet material 10 only on one side of the metal thin plate material 20, by arranging the sheet material 10 on both sides of the metal thin plate material 20, or by arranging the metal thin plate material 20 on both sides of the sheet material 10. Furthermore, the composite material 1 may be constructed by further laminating the sheet material 10 and the metal thin plate material 20 laminated together. The composite material 1 constructed in this manner can also achieve the same effects as the above-mentioned composite materials 1a to 1j.

[0172] 1a~1j…Composite material 10a~10j...Sheet material 11e...Through hole 20a~20j…Thin metal plate material 30a, 30i, 30j...Cut and raised parts 30b...cutout part 30c, 30d…Bend section 30e...Ejection prevention part 30g…suture area 30h…Cutting 31c, 31d…Convex 32c, 32d…Concave 40d…Bending restriction body F…Pulling force

Claims

1. A flexible thin metal plate material and a sheet-shaped sheet material are laminated in the thickness direction, A plurality of holding portions are formed on at least one of the laminated metal thin plate material and the laminated sheet material, the holding portions holding the other of the laminated metal thin plate material and the laminated sheet material, The metal thin plate material and the sheet material stacked by the holding portion are integrated. Composite material.

2. The holding portion is provided on the metal thin plate material. The composite material of claim 1.

3. The metal thin plate has a cut-out portion that is cut out from another portion and bent and deformed, The sheet material is sandwiched and held between the cut-out portion and the other portion, The cut-out portion is the holding portion. The composite material of claim 2.

4. The metal thin plate is provided with a cut-and-raised portion that is cut and raised toward the sheet material from other portions, The cut and raised portion bites into and holds the sheet material, The cut and raised portion is the holding portion. The composite material of claim 2.

5. The cut and raised portion penetrates the metal thin plate material. The composite material of claim 4.

6. The metal thin plate is provided with a cut-and-raised portion that is cut and raised toward the sheet material from other portions, The cut and raised portion bites into the sheet material and sandwiches and holds the sheet material between the cut and raised portion and the other portion, The cut and raised portion is the holding portion. The composite material of claim 2.

7. A bent portion is provided on the main surface of the metal thin plate material in the thickness direction, The bent portion sandwiches and holds the sheet material, The bent portion is the holding portion. The composite material of claim 2.

8. The bent portion has a curved shape with a gentle bending angle. The composite material of claim 7.

9. The sheet material is provided with a plurality of through holes penetrating in a thickness direction, The metal thin plate is provided with a plurality of projections each having a projection shape that passes through the through hole and prevents the metal thin plate from slipping out of the through hole, The slip-out prevention portion is the holding portion. The composite material of claim 2.

10. The metal thin plate is provided with a plurality of through holes penetrating in a thickness direction, The sheet material is provided with a plurality of convex anti-slip portions that pass through the through holes and have an anti-slip shape that prevents the sheet material from slipping out of the through holes, The slip-out prevention portion is the holding portion. The composite material of claim 1.

11. a stitching portion is provided to stitch the laminated metal thin plate material and the sheet material in the thickness direction; The stitching portion is the holding portion. The composite material of claim 2.

12. The suture portion is made of a metal suture. The composite material of claim 11.

13. A cut is provided in the metal thin plate material, The sheet material is sandwiched and held between the cuts, The notch is the holding portion. The composite material of claim 2.

14. It is made of a flexible metal and has a thin shape. a bending process of bending a metal thin plate material having a plurality of notches between the notches; a cutting and raising step of bending the cut so as to raise and widen the cut to form a cut and raised portion; a lamination step of laminating a sheet-shaped sheet material in a thickness direction on the bent metal thin plate material; A bending process is performed in which the sheet material is pressed against the metal thin plate material and the metal thin plate material is bent back. Manufacturing methods for composite materials.

15. A lamination process of laminating a thin metal thin plate material made of a flexible metal and a sheet-shaped sheet material in a thickness direction; a wave-shape forming step of bending the metal thin plate material and the sheet material to be laminated in a thickness direction to form a wave shape in which concave portions and convex portions are continuous in a main surface direction; a clamping step of compressing the convex portions and the concave portions forming the wavy shape in the main surface direction and inclining them in the thickness direction to form bent-back portions, and clamping the sheet material with the bent-back portions; Manufacturing methods for composite materials.

16. A lamination process of laminating a thin metal thin plate material made of a flexible metal and a sheet-shaped sheet material in a thickness direction; a wave-shape forming step of bending the metal thin plate material and the sheet material to be laminated in a thickness direction to form a wave shape in which concave portions and convex portions are continuous in a main surface direction; a clamping step of compressing the convex portions and the concave portions forming the wavy shape in the main surface direction to form bent-back portions, and clamping the sheet material with the bent-back portions; In the clamping step, a bending restricting body is inserted on the inner side of the bent-back portions of the convex portion and the concave portion in the bending direction, and the bent-back portions are compressed while being restricted in bending. Manufacturing methods for composite materials.

17. a lamination process for laminating a sheet material having insulating properties and having through holes through which the protrusions are inserted onto a thin metal thin plate material having flexibility and a plurality of protruding portions in a thickness direction such that the protrusions pass through the through holes; and a pull-out prevention process for processing the protrusion, which is disposed on the opposite side to the side on which the thin metal plate material is disposed, into a pull-out prevention shape that prevents the thin metal plate material from passing through the through hole and coming out of the through hole. Manufacturing methods for composite materials.

18. A pulling process is a process of applying a pulling force to a thin flexible metal sheet material having a plurality of notches so as to widen the notches; a lamination step of laminating a sheet-shaped sheet material in a thickness direction on the metal thin plate material where the incision spreads; a clamping step of pressing the sheet material against the metal thin plate material, releasing the applied tensile force, and clamping the sheet material between the cuts; Manufacturing methods for composite materials.

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