Abstract: A fiber-reinforced resin composition contains a resin-adhered long fiber bundle including composition (A), a thermoplastic resin, and component (B), a rayon fiber, wherein the rayon fiber of component (B) satisfies the following requirements (b1), (b2) and (b3), and the resin-adhered long fiber bundle is obtained by adhering and integrating the thermoplastic resin of component (A) in a molten state to and with a strand of longitudinally-arranged rayon fibers of component (B), and cutting the strand into a length of 3 to 30 mm, (b1) a fiber diameter of 5 to 30 ?m; (b2) a tensile elongation of 10% or more; and (b3) a flat shape with a ratio between a major axis length and a minor axis length (major axis length/minor axis length) in a width-directional cross-section of 1.1 or more.

Abstract: The present invention provides a fiber-reinforced resin composition, which provides a molded article having a good mechanical strength. The fiber-reinforced resin composition contains a resin-adhered long fiber bundle including (A) a thermoplastic resin and (B) a rayon fiber, wherein the rayon fiber of the component (B) satisfies the following requirements (b1), (b2) and (b3), and the resin-adhered long fiber bundle is obtained by adhering and integrating the thermoplastic resin of the component (A) in a molten state to and with a strand of longitudinally-arranged rayon fibers of the component (B), and cutting the strand into a length of 3 to 30 mm, (b1) a fiber diameter of 5 to 30 ?m; (b2) a tensile elongation of 10% or more; and (b3) a flat shape with a ratio between a major axis length and a minor axis length (major axis length/minor axis length) in a width-directional cross section of 1.1 or more.

Abstract: A fiber-reinforced resin composition which is capable of providing a light-weight molded article that has a high mechanical strength. The fiber-reinforced resin composition contains (A) a thermoplastic resin and (B) resin-impregnated filament bundles containing rayon fibers. The rayon fibers of the component (B) have a fiber diameter of 5-30 ?m and an X-ray orientation degree of 86% or more. The resin-impregnated filament bundles are obtained by: tying 2,000-30,000 rayon fibers of the component (B) lined up in the longitudinal direction together in a bundle; integrating the bundle of the rayon fibers by impregnating the bundle with the thermoplastic resin of the component (A) in a molten state; and then cutting the integrated bundle into pieces 3-30 mm long.

Abstract: Provided is a fiber-reinforced resin composition which is capable of providing a light-weight molded article that has high mechanical strength. This fiber-reinforced resin composition contains (A) a thermoplastic resin and (B) resin-impregnated filament bundles containing rayon fibers. The rayon fibers of the component (B) have a fiber diameter of 5-30 ?m and an X-ray orientation degree of 86% or more. The resin-impregnated filament bundles are obtained by: tying 2,000-30,000 rayon fibers of the component (B) lined up in the longitudinal direction together in a bundle; integrating the bundle of the rayon fibers by impregnating the bundle with the thermoplastic resin of the component (A) in a molten state; and then cutting the integrated bundle into pieces 3-30 mm long.

Abstract: A resin composition comprises 1 to 60 parts by weight of a wollastonite fiber (in which the number-average fiber length is 1 to 30 ?m, the number-average fiber diameter is 0.1 to 10 ?m, and the proportion of the number of a fiber having a fiber length of 5 to 25 ?m relative to the total number of the fiber is 20 to 75%) and 0.1 to 20 parts by weight of an acid- or epoxy-modified olefinic resin having a melting point of 100 to 170° C., relative to 100 parts by weight of a thermoplastic resin (e.g., a polycarbonate-series resin). The weight-average molecular weight of the modified olefinic resin may be about 2.5×104 to 30×104. The resin composition may comprise a flame retardant. The combination use of the wollastonite fiber and the modified olefinic resin improves heat resistance, impact resistance and weld strength, even in the case of using a wollastonite fiber having a number-average fiber diameter of about 4 to 7 ?m and an average aspect ratio of about 1.5 to 3.

Abstract: A resin composition comprises 1 to 60 parts by weight of a wollastonite fiber (in which the number-average fiber length is 1 to 30 ?m, the number-average fiber diameter is 0.1 to 10 ?m, and the proportion of the number of a fiber having a fiber length of 5 to 25 ?m relative to the total number of the fiber is 20 to 75%) and 0.1 to 20 parts by weight of an acid- or epoxy-modified olefinic resin having a melting point of 100 to 170° C., relative to 100 parts by weight of a thermoplastic resin (e.g., a polycarbonate-series resin). The weight-average molecular weight of the modified olefinic resin may be about 2.5×104 to 30×104. The resin composition may comprise a flame retardant. The combination use of the wollastonite fiber and the modified olefinic resin improves heat resistance, impact resistance and weld strength, even in the case of using a wollastonite fiber having a number-average fiber diameter of about 4 to 7 ?m and an average aspect ratio of about 1.5 to 3.