| 摘要 |
According to the invention, this extrusion die 10, 11 makes it possible to embed, during extrusion, in a tubular profile extruded in a single pass, a filamentary reinforcement onto two layers, a first layer of longitudinal filaments (wires, yarns) 1 and a second layer constituted by a filament 2 spirally encircling the longitudinal filaments 1, the latter being fed into the mass of extruded material via calibrated passages made radially in the die support 6 and between the two front 10 and rear 11 parts of the die, the spiroidal encircling filament 2 being delivered via a rotary filament holder 5 mounted on the front of the die support 6, with interposition of sealing rings 8 providing an air cushion (bearing), this filament 2 passing through a die nozzle 9, supported centrally by the rotary filament holder 5, which spirally delivers it onto the longitudinal filaments 1. <IMAGE>
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