| abstract |
A pull-open cap having excellent biodegradability and good openability is provided. A cap made of a biodegradable aliphatic polyester resin, having a top wall in which a cut region is defined by a breakable thin portion, and a finger hook provided in the cut region, A cap characterized in that the thickness of the breakable thin portion is 0.05 to 0.20 mm, more preferably the thickness of the breakable thin portion is 0.07 to 0.17 mm. [Selection] Figure 1 |