| 摘要 |
PURPOSE: To lessen the effect of a force applied except when the closure is opened. CONSTITUTION: This closure unit has a substantially tubular pouring part 11 and a lid part 12 for opening and closing a pouring mouth of the pouring part 11, and has an area consisting of at least two materials with at least one different property. An area consisting of one material extending to both the pouring part 11 and the lid part 12 has a breaking part 15 at least a part of which extends along the circumference of the pouring mouth. An area consisting of another material covers the breaking part 15 and an adjacent area in a protection/support zone 20 to cover and support the breaking part 15. Inside the area consisting of one material, another protection/support zone 20 covering the breaking part 15 and an adjacent area surrounding at least the breaking part 15 can be provided. |
