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JP-2026075583-A - Apparatus for manufacturing long carbon nanotube sheets, method for manufacturing long carbon nanotube sheets, long carbon nanotube sheets, and laminates

JP2026075583AJP 2026075583 AJP2026075583 AJP 2026075583AJP-2026075583-A

Abstract

[Problem] To provide a CNT long sheet manufacturing apparatus for efficiently producing highly useful CNT long sheets. [Solution] The lamination drum for laminating CNT films has a cylindrical shape and a slit-shaped discontinuous portion extending parallel to the axial direction on its outer circumference; a first inner roll disposed in the hollow space of the lamination drum and winding a release film that is wrapped around the outer circumference of the lamination drum via the discontinuous portion; a second inner roll disposed in the hollow space and recovering and winding the release film wound around the outer circumference of the lamination drum via the discontinuous portion; and a substrate to which a CNT forest is attached for adhering a CNT web to the release film wound around the outer circumference of the lamination drum. The lamination drum is rotatably arranged so that the CNT film with the CNT web laminated on it can be laminated on the release film, and the second inner roll winds the CNT film together with the release film. [Selection Diagram] Figure 1

Inventors

  • 杉原 康介
  • 三好 歩
  • トウ コウエイ

Assignees

  • 株式会社カーボンフライ

Dates

Publication Date
20260508
Application Date
20250519

Claims (4)

  1. A long sheet made of carbon nanotubes, with a length of 100 m or more, a width of 1 m or more, and a basis weight of 0.0226 mg/ cm² to 170 mg/ cm² .
  2. A long carbon nanotube sheet according to claim 1, comprising 20 to 10,000 layers of carbon nanotube webs laminated together.
  3. A long sheet made of carbon nanotubes according to claim 1, wherein 97% to 100% by mass is composed of carbon nanotubes.
  4. A long sheet made of carbon nanotubes according to claim 1, A laminate comprising a long sheet of carbon nanotubes and a release film disposed on both surfaces thereof.

Description

This invention relates to an apparatus for manufacturing long carbon nanotube sheets, a method for manufacturing long carbon nanotube sheets, long carbon nanotube sheets, and laminates. Carbon nanotubes (CNTs) have been known for some time as tubular nanomaterials composed solely of carbon atoms (see, for example, Patent Document 1). Due to their thinness, lightness, and flexibility, carbon nanotubes (hereinafter abbreviated as CNTs) are attracting attention as a next-generation carbon material. Japanese Patent Publication No. 2023-128466 This is a perspective view showing an overview of a CNT long sheet manufacturing apparatus according to an embodiment.This is a schematic diagram showing the state of the setting step (S1) in the CNT long sheet manufacturing method according to the embodiment, in which the release film unwound from the first inner roll is wrapped around the outer circumference of the laminated drum.This is a schematic diagram showing the layer formation step (S2) in the CNT long sheet manufacturing method according to the embodiment, in which a first carbon nanotube layer (hereinafter referred to as the first CNT film layer) is formed on a release film wrapped around the outer circumference of a laminated drum.This is a schematic diagram showing the CNT layer cutting step (S3) in which the discontinuous portion is cut, and the coating step (S4) in which an additional release film, corresponding to half the circumference of the laminated drum, is placed over the first layer of CNT film in a method for manufacturing a long sheet made of CNT according to an embodiment.This is a schematic diagram showing a state in which, in a method for manufacturing long sheets made of CNT according to an embodiment, a sandwich-like layer is formed on the second inner roll side of the outer circumference of the laminated drum, and a base layer is formed on the first inner roll side of the outer circumference of the laminated drum.This is a schematic diagram showing the winding process (S5) in which a sandwich-like layer is wound onto a second inner roll in a CNT long sheet manufacturing method according to an embodiment.This is a schematic diagram showing the layer formation process (S2) of the second cycle in the CNT long sheet manufacturing method according to the embodiment, in which a second CNT film layer is formed on top of the first CNT film layer.This is a schematic diagram showing the second cycle CNT layer cutting step (S3), in which the discontinuous portion is cut, and the second cycle coating step (S4), in which a release film with a length equivalent to half the circumference of the laminated drum is placed over the second layer of CNT film, in a method for manufacturing a long sheet made of CNT according to an embodiment.This is a schematic diagram showing a state in which, in a method for manufacturing long sheets made of CNT according to an embodiment, a sandwich-like layer is formed on the second inner roll side of the outer circumference of the laminated drum, and a base layer is formed on the first inner roll side of the outer circumference of the laminated drum.This is a schematic diagram showing the winding process (S5) of the second cycle in the CNT long sheet manufacturing method according to the embodiment, in which a sandwich-like layer is wound onto a second inner roll.This is a schematic diagram showing the third cycle layer formation step (S2) in the CNT long sheet manufacturing method according to the embodiment, in which a second CNT film layer is formed on top of the first CNT film layer.This is a schematic diagram showing the process of obtaining a long sheet made of CNT according to the embodiment. The following description will refer to the drawings to explain an embodiment of the CNT long sheet manufacturing apparatus according to the present invention. Figure 1 is a perspective view showing an overview of the CNT long sheet manufacturing apparatus. In this disclosure, expressions describing relative or absolute arrangements such as "in a certain direction," "along a certain direction," "parallel," "orthogonal," "center," "intermediate," "concentric," or "coaxial" not only strictly describe such arrangements but also include states of relative displacement with tolerances or angles or distances sufficient to achieve the same function. As shown in Figure 1, the CNT long sheet manufacturing apparatus 2 comprises a laminated drum 4, a first inner roll 6, a second inner roll 8, and a substrate 15 to which the CNT forest 16 is attached. The laminated drum 4 is a cylindrical drum having a cylindrical hollow space 10 inside, and is equipped with a slit-shaped discontinuous portion 12 extending parallel to the axial direction. The outer circumference length of the laminated drum 4 is preferably 1.5 m to 10 m, more preferably 2 m to 6 m from the viewpoint of workability, and even more preferably 2.5 m to 4 m. From the viewpoint of manufacturing long sheets of CNT with a small numbe