METHOD FOR MANUFACTURING GAS DIFFUSION LAYER INTEGRATED GASKET

• Main Authors: YUI HAJIME, OBA KENICHI
• Format: Patent
• Language: English; Japanese
• Published: 30.04.2021
• Subjects: BASIC ELECTRIC ELEMENTS; BLASTING; COLOUR PRINTING; CYLINDERS; ELECTRICITY; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; LINING MACHINES; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PISTONS; PRINTING; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SEALINGS; STAMPS; THERMAL INSULATION IN GENERAL; TRANSPORTING; TYPEWRITERS; WEAPONS

To provide a method for manufacturing a gas diffusion layer integrated gasket in which no gap remains between a gasket mounting member and a gas diffusion layer, so that it is possible to prevent an electrolyte membrane from entering the gap and thus being damaged.SOLUTION: As a step, first, a gasket mounting member 51 and a gas diffusion layer 41A in a fuel battery cell are arranged on the same plane with a gap c being set between them. Next, a screen mask 82 including a printing portion 82a for forming a gasket main body 61 and a printing portion 82b for forming a gap filling member 71 which fills the gap c and integrates the gasket mounting member 51 and the gas diffusion layer 41A is covered on the plane of the gasket mounting member 51, a molding material G for forming the gasket main body 61 is coated, the molding material G for forming the gap filling member 71 is filled, and the molding material G is solidified.SELECTED DRAWING: Figure 4 【課題】ガスケット取付部材とガス拡散層との間に隙間が残らず、よって電解質膜が隙間に入り込んで破損するのを防止することができるガス拡散層一体ガスケットの製造方法を提供する。【解決手段】工程として先ず、燃料電池セルにおけるガスケット取付部材５１とガス拡散層４１Ａとを両者の間に隙間ｃを設定した状態で同一平面上に並べる。次いでガスケット取付部材５１の平面上にガスケット本体６１を形成する印刷部８２ａならびに隙間ｃを埋めガスケット取付部材５１およびガス拡散層４１Ａを一体化する隙間埋め部材７１を形成する印刷部８２ｂを備えるスクリーンマスク８２を被せ、ガスケット本体６１を形成する成形材料Ｇを塗布し、隙間埋め部材７１を形成する成形材料Ｇを充填し、成形材料Ｇを固化させる。【選択図】図４