GRANULOS COEXTRUDADOS CONSTITUIDOS DE UM COPOLIMERO DE ACETATO DE VINILA E DE ETILENO E,PROCESSO PARA SUA FABRICACAO

摘要

The coextruded granules consist of a copolymer of vinyl acetate and ethylene coated by coextrusion with a polar thermoplastic polymer such as, for example, polymethyl methacrylate or a copolymer of ethylene and vinyl acetate. They are advantageously produced by extrusion drying of a moist coagulate of a copolymer of vinyl acetate and ethylene and in-line coextrusion coating with a polar thermoplastic polymer. The coextruded granules are not tacky, can be stored without any problems and can be employed as adhesives for coextrusion.