JP2006218524A - Method for manufacturing metallic foil having roughened surface and metallic foil having roughened surface which is manufactured by using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method of a metallic foil having a roughened surface of a desired thickness without depending on the surface roughness of used rolling rolls and a metallic foil having large surface roughness. <P>SOLUTION: After roughening the surface by rolling a metallic sheet by using rolling rolls having arbitrary surface roughness, both surfaces of the metallic sheet are coated with an organic resin. Next, after again rolling the metallic sheet coated with the organic resin so that the metallic sheet is made into the metallic foil of the desired thickness, the metallic foil having the roughened surface is stably obtained by peeling the organic resin on both surfaces. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for producing a metal foil, and more particularly, to a method for producing a metal foil having a rough surface, and a metal foil having a rough surface produced using the method.

  In order to obtain a metal plate with a large surface roughness, a roll having a rough surface that can be rolled and thinned sequentially at each stand using a multi-stand rolling mill and the surface roughness of the metal plate can be obtained at the final stand. Temper rolling is performed to obtain a metal plate having the desired thickness and surface roughness. However, when a metal plate with a small thickness is rolled with a roll with a large surface roughness to be formed into a very thin metal foil with a rough surface, a buckling phenomenon occurs and a defect called warp is generated. . In addition, when tension is applied using a tension leveler or the like in order to suppress or reduce the occurrence of the vertical wrinkles, it is extremely thin, and is easily broken and cannot be stably produced.

  In order to overcome such drawbacks, for example, Patent Document 1 discloses a method of temper rolling using a roll having a surface roughness suitable for a plate thickness in which no vertical bars are generated. However, according to this method, the range of the plate thickness that can be rolled without causing vertical wrinkles is limited by the surface roughness of the roll, so that the metal foil having the desired surface roughness regardless of the thickness, particularly the thickness It is impossible to manufacture a metal foil having a surface roughness of 0.05 mm or less and Ra of 1.0 μm or more.

Japanese Patent Application Laid-Open No. 07-024501

  An object of the present invention is to provide a method for producing a metal foil having a rough surface having a desired thickness without depending on the surface roughness of a roll to be used, and a metal foil having a large surface roughness. .

In order to solve the above problems, the method for producing a metal foil having a rough surface according to the present invention, after rolling a metal plate using a roll having a rough surface processed to roughen the surface, The organic resin is coated on both surfaces of the roughened metal plate, and then the organic resin-coated metal plate is re-rolled so that the metal plate becomes a metal foil having a predetermined thickness, and then the organic resin is peeled off. A method for producing a metal foil having a rough surface characterized in that (Claim 1),
In the method for producing a metal foil having a rough surface as described above (Claim 1), the re-rolling is performed using a roll having a surface with a surface roughness smaller than that of the surface of the roll subjected to the rough surface processing ( (2) In the method for producing a metal foil having a rough surface according to (Claim 1), the metal plate has a thickness before rolling of 0.10 mm or more (Claim 3). In the method for producing a metal foil having a rough surface according to (Claim 1), the metal foil has a thickness of 0.05 mm or less (Claim 4).

Moreover, the metal foil having a rough surface of the present invention is a metal foil having a rough surface (Claim 5) produced by using any one of the metal foil production methods described above (Claims 1 to 4). ,
The metal foil having a rough surface as described above (Claim 5) has a surface roughness Ra of 1.0 μm (JIS B 0601) or more (Claim 6).

  In the present invention, a metal plate is rolled using a roll having an arbitrary surface roughness to roughen the surface, and then an organic resin is coated on both surfaces of the metal plate, and then the metal plate has a predetermined thickness. After re-rolling the organic resin-coated metal plate so as to become a metal foil, the organic resin is peeled off, so that it does not depend on the surface roughness of the roll and has any thickness without causing vertical wrinkles. It is possible to produce a metal foil having a surface roughness, particularly a metal foil having a surface roughness with a thickness of 0.05 mm or less and an Ra of 1.0 μm or more.

The contents of the present invention will be described below.
In the method for producing a metal foil having a rough surface according to the present invention, the metal plate applied as the original plate is usually a steel plate, a plated steel plate, a surface-treated steel plate, a stainless steel plate, an aluminum plate, an aluminum alloy plate, a copper plate, a copper alloy plate, etc. The metal plate manufactured by the rolling process of this can be mentioned. As the plate thickness, use a roughened metal plate rolled with the desired surface roughness with the final temper rolling roll to the minimum thickness that can be rolled without causing vertical wrinkles regardless of the surface roughness of the roll. It is preferable. For example, in the case of a steel plate, it is preferable to use a roughened surface rolled to a thickness of about 0.1 to 0.2 mm.

  Next, an organic resin is coated on both surfaces of the roughened metal plate using a known coating method. As the organic resin, it is preferable to use a film made of a thermoplastic resin such as a general-purpose polyolefin resin, polyester resin, or polyamide resin and coat it by a thermal bonding method. The thickness of the organic resin is preferably about 10 to 100 μm, although it depends on the surface roughness of the roll used for re-rolling after coating the organic resin. The thermal bonding of the organic resin is preferably performed by thermal bonding in a condition where it can be easily peeled after re-rolling, for example, in a temperature range above the glass transition temperature and below the melting temperature.

  The organic resin-coated metal plate thus obtained is re-rolled so as to obtain a metal foil having a desired thickness. The surface roughness of the roll used for re-rolling is such that the rough surface of the re-rolling roll is not transferred to the surface of the metal plate when the organic resin to be coated is thin. It is preferable to use a roll having a surface roughness smaller than the surface roughness of the roll for temper rolling used for surface treatment, but the organic resin to be coated is thick, and the rough surface of the re-rolling roll is transferred to the surface of the metal plate. When there is no fear, it is not necessary to specifically limit the surface roughness of the roll.

  After rerolling in this manner, the metal foil having a large surface roughness according to the present invention can be obtained by peeling off the organic resin.

Hereinafter, the present invention will be described in more detail with reference to examples.
[Metal plate]
A 1.8 mm thick hot-rolled steel sheet is cold-rolled and annealed to a thickness of 0.5 mm with a 5-stage tandem mill and then re-rolled to a thickness of 0.1 mm with a 2-stage tandem mill. did. Then, after re-annealing, a temper rolling mill having a single-stage stand having a roll having a surface roughness Ra of 2.4 μm as a work roll was used, and a 0.1 mm thick cold having a surface roughness Ra of 1.8 μm. A rolled steel sheet was created.

[Resin-coated metal plate]
An unstretched film of polyethylene terephthalate having a thickness of 20 μm was thermally bonded to both surfaces of the cold-rolled steel plate at a heating temperature of 230 ° C. to obtain a resin-coated metal plate.

[Re-rolling]
Using the above-mentioned resin-coated metal plate as a work roll, a two-stand tandem mill having a roll with a surface roughness Ra of 0.3 μm, so that the thickness of the rolled metal foil portion is 0.04 mm Rolled. Thereafter, the resin was peeled off to obtain a steel foil having a thickness of 0.04 mm and a surface roughness of Ra of 1.6 μm.

After rolling a metal plate using a roll having an arbitrary surface roughness to roughen the surface, coat both sides of the metal plate with an organic resin, and then the metal plate becomes a metal foil of a predetermined thickness According to the method for producing a metal foil having a rough surface of the present invention comprising a series of steps of peeling the organic resin after re-rolling the organic resin-coated metal plate, it depends on the surface roughness of the roll. A metal foil having a surface roughness of an arbitrary thickness without causing vertical wrinkles, particularly a metal foil having a thickness of 0.05 mm or less and a surface roughness Ra of 1.0 μm or more. it can. In addition, since it is not necessary to apply tension to suppress the occurrence of vertical wrinkles, the metal foil is not broken and a metal foil having a rough surface can be produced stably.

Claims (6)

After rolling the metal plate using a roll having a roughened surface, the surface is roughened, and then an organic resin is coated on both surfaces of the roughened metal plate, and then the metal plate has a predetermined thickness. A method for producing a metal foil having a rough surface, wherein the organic resin-coated metal sheet is re-rolled so as to form a metal foil, and then the organic resin is peeled off. The said re-rolling is performed using a roll having a surface whose surface roughness is smaller than the surface of the roll subjected to the roughening process, The metal foil having a rough surface according to claim 1, Method. The method for producing a metal foil having a rough surface according to claim 1, wherein the metal plate has a thickness before rolling of 0.10 mm or more. The method for producing a metal foil having a rough surface according to claim 1, wherein the metal foil has a thickness of 0.05 mm or less. Metal foil which has a rough surface manufactured using the manufacturing method of metal foil in any one of Claims 1-4. 6. The metal foil having a rough surface according to claim 5, wherein the surface roughness Ra (JIS B 0601) is 1.0 μm or more.