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|1. (WO2017156604) SYSTEM AND METHOD USING HIGH FREQUENCY FOR SHAPING POLYMERIC SOLES AND MIDSOLES|
|Applicants:||ORISOL DO BRASIL INDÚSTRIA E COMÉRCIO DE MÁQUINAS LTDA
|Inventors:||LEANDRO MAUS, Jeferson
|Title:||SYSTEM AND METHOD USING HIGH FREQUENCY FOR SHAPING POLYMERIC SOLES AND MIDSOLES|
A system and a method using are described for shaping soles and midsolves made of EVA (ethylene-vinyl acetate copolymer) using high frequency, and an EVA preform injection-moulded or vulcanised inside a conventional mould with walls coated with an insulating material, the mould being used under pressure and heated to a temperature of 80°C to 120°C for 2 to 4 minutes, the EVA being then kept under pressure and cooled to a temperature from 25°C to 35°, ensuring the dimensional and geometric stability of the EVA article.