Method for producing insulated electric wire

Patent metadata

Field	Value
Publication number	US-2018012684-A1
Application number	US-201615544159-A
Country	US
Kind code	A1
Filing date	Feb 5, 2016
Priority date	Feb 13, 2015
Publication date	Jan 11, 2018
Grant date	—

Abstract

A method for producing an insulated electric wire of the present invention is a method for forming an insulating coating film on a surface of an electric wire by performing baking treatment after forming an insulating layer on the surface of the electric wire by an electrodeposition method using an insulating electrodeposition coating material containing a polymer. Pretreatment of evaporating a solvent in the insulating layer is performed before the baking treatment, and the pretreatment is performed by a near infrared ray heating furnace. In addition, a temperature of the pretreatment is lower than a temperature of the baking treatment.

First claim

1 . A method for producing an insulated electric wire in which an insulating coating film is formed on a surface of an electric wire by performing baking treatment after forming an insulating layer on the surface of the electric wire by an electrodeposition method using an insulating electrodeposition coating material containing a polymer, the method comprising:
performing pretreatment of evaporating a solvent in the insulating layer before the baking treatment; and performing the pretreatment by a near infrared ray heating furnace, wherein a temperature of the pretreatment is lower than a temperature of the baking treatment.

2 . The method for producing an insulated electric wire according to claim 1 ,
wherein a peak wavelength of the near infrared ray heating furnace is set to be within a range of 0.7 to 2.5 μm.

3 . The method for producing an insulated electric wire according to claim 1 ,
wherein the temperature of the pretreatment is within a range of 50° C. to 200° C., and the temperature of the baking treatment is within a range of 200° C. to 500° C.

Assignees

• Mitsubishi Materials Corp

Inventors

• Iida Shintaro
• Sakurai Hideaki

Classifications

• C25D13/20

  Pretreatment · CPC title

• C09D5/4461

  Polyamides; Polyimides · CPC title

• H01B13/16 Primary

  by passing through or dipping in a liquid bath; by spraying · CPC title

• H01B13/0016

  for heat treatment · CPC title

• C25D13/00

  Electrophoretic coating characterised by the process (C25D15/00 takes precedence; compositions for electrophoretic coating C09D5/44) · CPC title