Abstract:
Method of molding a bottle-shaped container of orientation-molded polypropylene resin. To produce a bottle-shaped container of polypropylene resin having superior transparency, this method comprises the steps of rapidly heating the inside surface (P1) of a parison (P) molded in cylindrical shape with or without a bottom at higher than approx. 170 to 220 C which is the melting point of the polypropylene resin by a heat source (1), then quenching the parison (P) to thereby remove a number of fine ribs produced due to the strain at the inner surface of the parison (P), and then molding the parison (P) by the usual heat blow-molding process into a bottle-shaped container.
Abstract:
In a vehicle provided with power steering means of the kind in which a steering reaction is modulated in accordance with the speed of the vehicle, an antiroll system wherein a hydraulic pressure for generating the steering reaction is applied to anyone of suspension units determined by the steering direction to thereby suppress the rolling of the vehicle body, which will be caused due to the centrifugal force upon turning of the vehicle. The excessive tilt upon turning may be thus prevented with the results of improving the steering stability and safety of the vehicle.