Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Montedison SpA
Original Assignee
Montedison SpA
Montecatini Societa Generale per lIndustria Mineraria e Chimica SpA
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Filing date
Publication date
Application filed by Montedison SpA, Montecatini Societa Generale per lIndustria Mineraria e Chimica SpAfiledCriticalMontedison SpA
Publication of ES237685A1publicationCriticalpatent/ES237685A1/es
Procedimiento para la producción de tubos de material termoplástico, caracterizado porque comprende el moldear por extrusión un material termoplástico consistente a lo menos predominantemente en un polímero de propileno, de elevado peso molecuar, lineal y cristalino utilizando una matriz de extrusión que tiene una abertura anular, montada en una extrusora mantenida a una temperatura inferior a la que es mantenida dicha matriz, y el material termoplástico sale de la abertura anular a una temperatura de hasta 100º C sobre su punto de fusión.
ES0237685A1956-09-211957-09-20PROCEDIMIENTO PARA LA PRODUCCIoN DE TUBOS DE MATERIAL TERMOPLáSTICO
ExpiredES237685A1
(es)