| 摘要 |
The invention provides that a reinforced resin impregnable flexible tubular structure (68) is manufactured by feeding an inner layer (12) in tubular form over a floating mandrel (62) which is held magnetically suspended so that the layer (12) can be fed onto one end and off the other end of the mandrel (62). As the inner layer (12) is being so fed, reinforcing filaments (44-50) onto which adhesive has been sprayed, are helically wound round the inner layer (12). An outer resin absorbent layer (58) is then applied and that layer has an outer impermeable coating (59) so that the inner and outer layers (12, 58) of the resulting structures (68) can be impregnated with resin in which the reinforcement (44-50) is immersed by charging the resin into the inside of the structure (68). |
