Method for manufacturing integrated sheet

Patent metadata

Field	Value
Publication number	US-10964958-B2
Application number	US-201916267922-A
Country	US
Kind code	B2
Filing date	Feb 5, 2019
Priority date	Mar 29, 2018
Publication date	Mar 30, 2021
Grant date	Mar 30, 2021

Abstract

A method for manufacturing an integrated sheet of a MEGA and a resin frame, capable of curing a UV curable adhesive in a short time by suppressing an inhibition of curing of the UV curable adhesive and thereby providing excellent productivity is provided. A manufacturing method for an integrated sheet in which a resin frame is bonded to a MEGA, includes preparing a laminate in which a gas diffusion layer is laminated on at least one surface of a MEA, applying a coating of an UV curable adhesive to the laminate; placing a resin frame on the UV curable adhesive and applying a pressure to the frame, and irradiating the UV curable adhesive with ultraviolet rays, in which the irradiating includes a first irradiation step, and a second irradiation step in which ultraviolet rays are applied with irradiation intensity higher than irradiation intensity in the first irradiation step.

First claim

What is claimed is:

1. A manufacturing method for an integrated sheet in which a resin frame is bonded to a membrane electrode gas diffusion layer assembly (MEGA), comprising:
preparing a laminate in which a gas diffusion layer is laminated on at least one surface of a membrane electrode assembly;
applying a coating of an ultraviolet (UV) curable adhesive to the laminate;
placing a resin frame on the UV curable adhesive and applying a pressure to the resin frame; and
irradiating the UV curable adhesive with ultraviolet rays,
wherein
the irradiating includes a first irradiation step, and a second irradiation step in which ultraviolet rays are applied with irradiation intensity higher than irradiation intensity in the first irradiation step, and
the second irradiation step is started after the first irradiation step is started and before a temperature of the resin frame reaches a temperature at which radical quenching occurs.

2. The method according to claim 1 , wherein the UV curable adhesive is irradiated with ultraviolet rays through the resin frame.

3. The method according to claim 1 , wherein the irradiating the UV curable adhesive with ultraviolet rays includes switching from the irradiation intensity in first irradiation step to the irradiation intensity in the second irradiation step.

4. The method according to claim 1 , wherein the first irradiation step ends before the temperature of the resin frame reaches the temperature at which radical quenching occurs.

5. The method according to claim 1 , wherein the second irradiation step continues after the temperature of the resin frame reached the temperature at which radical quenching occurs.

Assignees

• Toyota Motor Co Ltd

Inventors

• Kinoshita Katsuhiko

Classifications

• H01M4/8875 Primary

  Methods for shaping the electrode into free-standing bodies, like sheets, films or grids, e.g. moulding, hot-pressing, casting without support, extrusion without support · CPC title

• B29C65/1406

  Ultraviolet [UV] radiation · CPC title

• H01M8/1004

  characterised by membrane-electrode assemblies [MEA] (H01M8/12 takes precedence) · CPC title

• H01M2008/1095

  Fuel cells with polymeric electrolytes · CPC title

• Y02E60/50

  Fuel cells · CPC title