| 摘要 |
<p>PROBLEM TO BE SOLVED: To increase the commodity value by a method wherein a plurality of recessed beads in the circumferential direction, of which the widths in the axial direction periodically change, and which wave by an odd number of patterns, are formed on the body part of a bottle with phase differences. SOLUTION: On a lower body part 4 of a plastic bottle 1, recessed beads 5 in the circumferential direction, are formed, and the widths in the axial direction are periodically changed so that the beads may wave by three odd number patterns, i.e., larger width parts and smaller width parts in the axial direction, are provided by respectively three in the circumferential direction, and the plurality of beads are formed with phase differences in the axial direction. Then, the angle for the phase differences is made approx. 10 deg.-60 deg., and making the angle 30 deg.-50 deg. is preferable from the viewpoint of shining and swinging feelings by alternately and respectively slipping the larger width parts and the smaller width parts in the axial direction. This angle of the phase differences is formed by extension lines for which the central points of the larger width parts or the smaller width parts in the axial direction are connected.</p> |
