| 摘要 |
PURPOSE:To secure the appropriate thickness of an adhesive layer in the title bonding structure of a plate end and to prevent the sticking of an adhesive to a heater, by providing a projecting stopper part and a part for preventing the protrusion of the adhesive to the plate end. CONSTITUTION:The projecting stopper part 1a and the part 1b for preventing the protrusion of the adhesive are provided to the plate end 1. When the adhesive 2 is arranged between the end plate 3 of a filter element 4 and the plate end 1, the plate end 1 is pressed, and the adhesive 2 is melted by a heater to bond the end plate 3 and the plate end 1. In this case, the thickness of the adhesive layer can be fixed by the stopper part 1a and the height of the projection. Besides, since the protrusion part of the adhesive 2a is covered by the protrusion preventing part 1b, the sticking of the protruded adhesive to the heater can be prevented.
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