Separate Platte für ein Steuerventil in einem automatischen Getriebe und Verfahren zu ihrer Herstellung

摘要

The separate plate comprises a metal plate (2) and one (3) or two (4) sealing portions, each of which consists of a foam rubber layer 80 mu m to 500 mu m thick, formed on one or two surfaces thereof. Each of the one or two sealing portions consists of a foam rubber layer reinforced with inorganic fiber, organic fiber or an unwoven cloth. Alternatively, the sealing portions may have a two-layered structure consisting of a not-yet-foamed rubber layer (5) 90 mu m to 300 mu m thick, whose rubber hardness defined by JIS SHORE A is 40 to 95, and a foam rubber layer (6) 80 mu m to 200 mu m thick or a foam rubber layer 80 mu m to 200 mu m thick reinforced with inorganic fiber, organic fiber or an unwoven cloth.