| 摘要 |
The present invention relates to a portable folding cup which is created based on the ideas of the corrugations of a straw. The corrugations (101) are formed in the side surface of the cup to enable the folding of the cup. The cup is made of thermoplastic synthetic resins having a thickness of 0.1-1.0 mm, thereby the cup is used at a temperature of -40 to 230 degrees. |
