Patent ID: 11865741
Assignee: KURTZ GMBH & CO. KG
Field: Other special machines (Mechanical engineering)
Classification: CPC B  C | IPC B

Claim 0:
1. A tool for production of particle foam parts through welding of foam particles by means of electromagnetic waves, comprising two mould halves which bound a mould cavity, wherein at least one of the two mould halves is made of a material which is transparent to electromagnetic waves and has a boundary wall which bounds the mould cavity and one or more supports serving to support the boundary wall on a capacitor plate on a side facing away from the mould cavity and forming one or more hollow spaces between the boundary wall and the capacitor plate, and wherein a relation of a volume of the one or more supports and air within the one or more hollow spaces of the two mould halves is adjusted such that a resulting relative permittivity of the tool is adapted to a relative permittivity of the foam particles, such that a temperature in the foam particles is levelled as a whole or can be locally adjusted at need.