Tool, tool system and method for the production of particle foam parts

A method for the manufacture of a shoe sole by the welding of foam particles using electromagnetic waves, the method comprising

• a. arranging a tool with two mold halves forming a mold cavity corresponding to the shape of the shoe sole between two capacitor plates,
• b. filling the mold cavity with the foam particles,
• c. closing the tool by bringing the two mold halves together, and
• d. introducing electromagnetic waves to the closed tool via the capacitor plates, with the foam particles in the mold cavity is subjected to electromagnetic waves,
• e. at least partially fusing or baking together the foam particles which are heated by the electromagnetic waves, and
• f. wherein at least one of the two mold halves is made of a material which is transparent to electromagnetic waves, has a boundary wall which bounds the mold cavity, and has at least one support which serves to support the boundary wall on the capacitor plate on the side facing away from the mold cavity and which form at least one hollow spaces.