| 摘要 |
PURPOSE:To effectively present reinforced long fiber in an engaging protrusion by narrowing long fiber-immersed composite resin material of uncured or unsolidified state in which is viscosity is adjusted to a specific value between pressing members with grooves while moving the material in an axially central direction, filling resin and long fiber in the grooves, and forming a protrusion part. CONSTITUTION:Nylon of thermoplastic resin is filled in a resin bath having heating means, heated to be melted, and immersed with carbon fiber bundle to obtain a long fiber-immersed composite resin material 1 having, for example, 3mm in diameter. The material 1 of uncured or unsolidified state is narrowed between pressing rolls 2 and 2 with grooves while moving the material 1 in an axially central direction, and the resin R of the material and long fiber F are filled in grooves 3 to form a protrusion 5. In this case, the viscosity etaof the material 1 at the time of reception of narrowing pressure is so adjusted as to satisfy the relation of a formula [I], where (d) is diameter (mm) of the fiber, L is the whole length of the narrowed part by the pressing members with grooves, deltaF rupture strength (kgf/mm<2>) of the fiber. |
