Coating film production apparatus and coating film production method using the same

Patent metadata

Field	Value
Publication number	US-9724726-B2
Application number	US-201514746295-A
Country	US
Kind code	B2
Filing date	Jun 22, 2015
Priority date	Aug 25, 2014
Publication date	Aug 8, 2017
Grant date	Aug 8, 2017

Abstract

A high-quality coating film with a uniform thickness is produced without crush of coating particles even in a case where a wet coating material that does not require a step of drying the coating material is used, while maintaining high productivity. By providing a surface layer with an optimized hardness on the surface of a roll used for supply of a mixture coating material, a high-quality coating film with a uniform thickness can be produced, even in a case where a wet coating material that does not require a step of drying the coating material is used, while maintaining high productivity.

First claim

What is claimed is:

1. A coating film production apparatus that produces a coating film, said apparatus comprising:
a feeder supplying a mixture coating material including coating particles; and
one or two first rolls and a second roll facing the first rolls configured to provide a gap between the first rolls and the second roll and roll the mixture coating material,
wherein the feeder supplies the mixture coating material to the gap between the first rolls and the second roll, at least one of the first rolls has, on its surface, a surface layer configured to press the mixture coating material so that a penetration depth of the coating particles into the surface layer in rolling the mixture coating material is 5% to 50% of a diameter of the coating particles,
the coating particles include one of: (1) artificial graphite particles having a collapse pressure of a granule that is an aggregate of the coating particles of approximately 0.02 GPa and a crush pressure of approximately 0.3 GPa; and (2) nickel-based cathode material particles having a collapse pressure of approximately 0.02 GPa and a crush pressure of approximately 50 GPa;
a surface layer of the at least one of the first rolls includes at least one of: (1) a fluororesin film; and a (2) diamond-like carbon (DLC) film; and
a relational expression of a Young's modulus of the surface layer is: a crush pressure of the coating particles×20>the Young's modulus of the surface layer>a collapse pressure of the granule.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Hamabe Masashi
• Kuromiya Takao
• Mikami Masateru

Classifications

• B05C1/0808

  Details thereof, e.g. surface characteristics · CPC title

• Y02P70/54

  Cross-Sectional Technologies · mapped topic

• B05C1/0869

  the work contacting the pool · CPC title

• B05C1/083

  being passed between the coating roller and one or more backing rollers · CPC title

• B05C19/00

  Apparatus specially adapted for applying particulate materials to surfaces · CPC title