Thermoplastic film capable of being sealed by high frequency current

• Main Author: DEGRAND MICHEL
• Format: Patent
• Language: English; Spanish
• Published: 16.01.1998
• Edition: 6
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; GENERAL PROCESSES OF COMPOUNDING; HANDLING THIN OR FILAMENTARY MATERIAL; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; STORING; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

The present invention relates to a thermoplastic film including at least one ethylene copolymer, which film is capable of being sealed by a high-frequency current. The film is characterized by its inclusion of a sufficient quantity of at least one N,N'-ethylenebisamide in order to obtain a high-frequency sealing time not exceeding 1 second. The films thus sealed are especially useful for packaging. PELICULA TERMOPLASTICA CAPAZ DE SER SELLADA POR ALTA FRECUENCIA. LA PELICULA COMPRENDE AL MENOS UN COPOLIMERO DE ETILENO CAPAZ DE SELLARSE MEDIANTE UNA CORRIENTE DE ALTA FRECUENCIA. LA PELICULA COMPRENDE ADEMAS UNA CANTIDAD SUFICIENTE DE POR LO MENOS UNA N,N''-ETILBISAMIDA, CON EL FIN DE OBTENER UN TIEMPO DE SELLADO A ALTA FRECUENCIA NO SUPERIOR A UN SEGUNDO.LAS PELICULAS ASI SELLADAS PUEDEN SER UTILIZADAS ESPECIALMENTE EN LA INDUSTRIA DEL ENVASADO.