| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for manufacturing continuously a tubular form which is reinforced with a fibrous liquid crystal resin oriented efficiently in the peripheral direction of the tubular form and also is of the exceedingly high strength and rigidity in the peripheral direction. SOLUTION: A mixture of liquid crystal resin 41 and thermoplastic resin 42 with a lower melting point or melting temperature than the transition point is injected into a first cylindrical flow path 31 of a cross heat die. In addition, a rotary die 22 is arranged at least, on one of the inner or the outer side of the first flow path 31, and the mixture is caused to flow through the first flow path 31 at a temperature higher than the transition point of the crystal liquid resin 41, and further, is shaped into a tubular shape so that the mixture receives a torsional shear while passing through the first flow path 31. Thus a tubular molding 43 consisting of the liquid crystal resin 41 oriented in the peripheral direction is formed. Next, the tubular molding 43 is injected into a second cylindrical flow path 32 with the inner and the outer peripheral face divided by a fixed wall part. Further, the tubular molding 43 is caused to pass through the second cylindrical flow path 32 at a temperature lower than the transition point of the liquid crystal resin 41 and the melting point or the melting temperature of the thermoplastic resin 42 to obtain a molded fiber-reinforced tubular form 44. |
