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    • 1. 发明公开
    • MOLDING METHOD
    • EP4371745A1
    • 2024-05-22
    • EP21950222.6
    • 2021-07-16
    • Kokoku Intech Co., Ltd.
    • MORI KeisukeHIRAYAMA Kouji
    • B29C69/02F16J15/10
    • Y02E60/50F16J15/10B29C69/02
    • There is provided a molding method capable of reducing damage or deformation of a base material when a seal member is molded in a direction intersecting an uneven portion of the base material. A molding method includes: a preforming step of injecting a rubber material into a groove 462 at a temperature where the rubber material is not crosslinked, in a cavity plate 410 including the groove 462 into which the rubber material is injected; and a vulcanization molding step of sandwiching a base material 300 between the cavity plate 410 in which the rubber material is injected into the groove 462 and a mold 420, and molding the rubber material onto the base material 300 as a seal member 172 at a temperature where the rubber material is crosslinked. At least a surface 422 of the mold 420 facing a recess 334 and a protrusion 332 of the base material 300 is a flat surface when viewed in a cross-section at a position separated by a predetermined distance from a molding position of the seal member 172 in an X direction substantially orthogonal to a Y direction in which the seal member 172 extends.