| 摘要 |
A mouthpiece for dispensing the contents of a container, made from heat-sealable plastic sheet material, has a tubular body divided by a peripheral collar into an upper and a lower portion. The lower portion, which may be cylindrical or frustoconically diverging, carries a pair of diametrically opposite wings whose outer lateral edges diverge downwardly from the periphery of the cells so as to define a trapezoidal outline. |
