To provide a mold for suppressing the excessive flow of a molding base material to the outside of the mold and capable of suppressing the lowering of the number of available products and productivity.

In the mold 1 constituted by providing a product-molding part 4 for molding a sheetlike molded product to the parting part 3 of mutually opposed split molds and providing a land throttle part 9 which suppresses the excessive flow of the molding material to the outside of the mold as a part, to the product-molding part 4, a planar diagonal groove part 10 for guiding the flow of the molding base material to an oblique direction to suppress the flow to the outside of the mold is provided to the land throttle part 9.