| 摘要 |
PROBLEM TO BE SOLVED: To provide a stamping molding which is uniform in the fraction of a reinforcing fiber, even in the tips of the rib and boss portions, has a high rib structure and high rigidity of the shape of the molding and takes a large internal volume.SOLUTION: The molding has a rib and/or a boss having a thickness of the base of up to 2.5 mm, and the thickness (a) and the height (b) of the base of the rib and/or the boss are in a relation expressed by a specific equation. The molding contains 15-60 vol.% of a fibrous reinforcing material of an average fiber length of 7.5-75 mm in the rib and/or the boss, and the relation between the vol.% of the fibrous reinforcing material in the range from the end to 2 mm from the end of the rib and/or the boss and the vol.% of the fibrous reinforcing material in the base is expressed by a specified equation. The thermoplastic resin of the molding is a polypropylene or a polyamide. |
