| 摘要 |
<p>1300112 Centrifugal casting of fibre-reinforced articles GADELIUS INTER SA 3 March 1970 [3 March 1969 17 March 1969 14 Nov 1969] 10205/70 Heading B5A Glass-fibre-reinforced plastics cylinders are produced by applying plastics to a rotating cylindrical mould on which it is evenly dispersed by centrifugal force and uniformly distributing reinforcement thereon to be pressed thereinto by centrifugal force and by rolling. A woven reinforcing sheet 15 is taken up on roller 13 from a roller (14, Fig. 1, not shown), roller 13 then being positioned axially in moulding cylinder 10. Trough 18 containing the plastics is then tilted and the plastics distributed on the mould surface as at 19. Roller 13 is then tilted to engage the plastics (Fig. 3, not shown) and sheet 15 unrolled as the mould rotates, roller 13 pressing the sheet 15 into the plastics. Alternatively (Figs. 4-5, not shown) a string (33) of glass fibre filaments is introduced into the rotating mould (21), cut therein by cylinder (39) having blades (40), applied to the plastics and rolled. The cast cylinder (50, Fig. 6, not shown) may be reinforced by windings (62, 63) of resin-impregnated strings (66, 67) under low tension.</p> |
