| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a synthetic resin thin-walled vessel which is vertically compressive. SOLUTION: In this synthetic resin thin-walled vessel in which a neck part 3 is erected from an upper end of a peripheral wall 1 of square or rectangular section via a shoulder part 2, both end walls 5 and 5 facing each other of the vessel are square or horizontally rectangular, a first folding line 8 is peripherally provided in the middle of the peripheral wall 1 in the vertical direction, a part of the first holding line of the length of about one half of the height of the peripheral wall from both ends of the folding line part out of the part of the first folding line 8 of the end walls 5 and 5 forms a second folding line 9, and a third folding line 10 is provided from an inner end of the folding line to corner parts of the upper and lower end walls at an outer end of the folding line.</p> |
