| 摘要 |
A racket frame and throat unit is prepared by injection molding using a mold with a mold cavity defining the oval frame and the throat. The method includes first injecting a first quantity of a fiber-reinforced thermoplastic resin into a first injection port at an end of the mold cavity remote from the throat, and second injecting a second quantity of the fiber-reinforced thermoplastic resin into a second injection port in the throat region. The step of second injecting is commenced at a time after the step of first injecting is commenced, typically 1-2 seconds after the first step is commenced. The frame is solid, with a central solid body at a planar centerline of the frame, and two solid arms extending outwardly from the solid body at an angle to the planar centerline of the frame of from about 70 degrees to about 80 degrees, one arm above and one arm below the planar centerline of the frame. There is preferably an oval hoop at a distal end of each of the solid arms.
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