Patent ID: 8197242
Filing Date: 2012-06-12
Classification: B29C,B29D,B29K,B29L

Abstract:
1. A sheathing device for continuously sheathing a ply of threads with a thermoplastic or viscoelastic material, said ply being formed by an array of approximately mutually parallel threads, which device comprises: a thread guide; a coating chamber into which a first feed channel and a second feed channel run, which are independent of each other, connected to a first feed means and to a second feed means respectively and capable of delivering a first material and a second material under pressure and with a defined flow rate, and the outlets of which channels are placed above and below the plane of the ply of threads; an output die, through which guide, chamber and die the ply of threads runs when the device is in operation; and at least two pressure-measuring means, coupled to a controller for controlling the pressure of each of the feed means, and located in the coating chamber facing and in line with each other, on either side of the plane of the ply and in the immediate vicinity of the outlet for the feed channels.