English to Spanish Tech/Engineering Metallurgy / Casting

Hola a todos, es para una patente sobre la fabricación de película de polímero:
He encontrado que lo dejan así método stenter, pero quería saber si existe algún término específico porque no encuentro algo que aplique en este caso.

"The three main methods of manufacturing polypropylene film are the stenter method, the cast method and the bubble method. In the cast and stenter methods, polymer chips are typically placed in an extruder and heated so that an extrudate is forced out of a slit die onto a chilled roller to form a film (in the case of the cast method) or a thick polymer ribbon (in the case of the stenter method). In the stenter method, the thick polymer ribbon is then reheated and then stretched lengthways and widthways to form a film."

Gracias!