PROCEDE DE FABRICATION DE STRATIFIE POLYMERE COMPORTANT UNE ETAPE D'ACTIVATION PAR TRAITEMENT PLASMA

• Main Authors: DHERBECOURT BRUNO, EUSTACHE RENE PAUL, SACHE FLORENCE
• Format: Patent
• Language: French
• Published: 12.12.2014
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

"The invention relates to a method for producing a laminate comprising at least two polymer layers, a layer (A) and a layer (B), which are fixed to each other by at least one aqueous-type adhesive polymer material layer (C). Said method is characterized in that: (a) it optionally consists of a step of pre-cleaning substrate layer (A) and/or substrate layer (B), by oxidizing or reducing continuous atmospheric cold plasma processing pre-cleaning; (b) the plasma is either (i) oxidizing or reducing when the layer is a polymer layer having a shore D of strictly between 35 and 60 or when the layer is a polymer layer having a shore D> or =60 and the distance between the plasma source and the surface of the layer to be activated is < or =3 cm, and (ii) the plasma is reducing when the layer is a polymer layer having a Shore D> or =60 and the distance between the plasma source and the surface of the layer to be activated >3 cm, substrate layers (A) and (B) being identical or different, and formed by non-exudant polymers."