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IND RIERA MARSA
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Priority to ES0210926ApriorityCriticalpatent/ES210926A3/es
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Nuevo sistema de soldadura o cierre de envases de papel que consiste esencialmente en someter las zonas que deban unirse del envase a la acción conjunta de presión y calor para lograr el reblandecimiento y polimerización de una capa de material plástico apropiado previamente depositado sobre las caras en contacto del papel que forma el envase uniéndose las mismas indisolublemente por dicho efecto.
ES0210926A1953-06-301953-06-30Un nuevo sistema de soldadura o cierre de envases de papel
ExpiredES210926A3
(es)