| 摘要 |
<p>A plastic container (1) has a first set of flex panels (2) and a second set of flex panels (3) at least one set being adapted to react to pressure changes within the container to a different degree which can be achieved by different curvature and/or size and/or different distance from a central longitudinal axis of the container. At least one of the panels has at least two different extents of curvature. In some embodiments one or more of the panels may be flat.</p> |
