filaments it is understandable that the liquid mixture to be deposited on the filaments preferably consists of such an anhydrous size for the definition of which reference is made to the contents of the already mentioned patent ep 0 570 283 and of the already mentioned applications fr 93 14792 96 00067 and fr 97 05926 furthermore a double or multiple application of the process of the invention to the filaments while they are being drawn before they are converged into yarn s for the purpose of transferring thereto liquid compositions capable of reacting with one another especially at ambient temperature by the copolymerization of constituents belonging to such separate compositions also forms part of the invention in other words the overall dimensions of the device necessary for implementing the process of the invention in no way prevents two or more of them being combined in order to deposit a double coating or a multiple coating on a single set of filaments as described in application fr 97 05926 the yarns obtained by the process of the invention are generally collected in the form of packages on rotating supports the yarns obtained according to the invention can be easily unwound from the packages and can be easily handled the yarns may also be collected on receiving supports undergoing translational motion they may in fact be sprayed by a device which also serves to draw them onto the collecting surface which is moving transversely to the direction of the sprayed filaments for the purpose of obtaining a web of intermingled continuous yarns called a u201c mat u201d the yarns may also be chopped before collecting by a device serving also to draw them the yarns obtained according to the invention may thus be in various forms after collection especially in the.