Method and device for improving material transfer in low-temperature processes usin high-intensity ultrasound

Abstract

[EN] The invention relates to a method for obtaining a high-barrier multi-layer film that includes a) an inner layer that includes a polar substance and b) at least one coating that includes a substance that is hydrophobic and/or suitable as a barrier to water, characterized in that said method includes coating the inner layer a) with at least one coating b), using a spinning technique. The polar substance of the inner layer a) is preferably a substance suitable as a barrier to gases and/or vapors, and is sensitive to moisture. Likewise, the invention relates to the aforementioned multi-layer film, to a material including same and to various uses of the multi-layer film or the material.

[ES] La presente invención se refiere a un procedimiento para acelerar y mejorar la transferencia de al menos un solvente, ocluido en una matríz sólida, semisólida o líquida, a un medio gaseoso a una presión absoluta igual o superior a 0.5 atm y a una temperatura igual o inferior a 15ºC, caracterizado porque comprende la aplicación de un campo ultrasónico de elevada intensidad, igual o superior a 150 dB. Asimismo, es objeto de la invención el dispositivo para llevar a cabo dicho procedimiento y su uso en el campo agroalimentario, químico, cosmético y/o farmacéutico.