| 摘要 |
<p>A sealing element for a snap-on fitment has spaced apart inner and outer skirts engageable with opposite sides of the container neck, an annular wall interconnecting the skirts and an extension from the annular wall forming a fitment engaging portion. An annular snap bead extends from the connecting annular wall to facilitate snap engagement with the fitment, and the engaging portion has an inner sealing surface and a seal bead adjacent its outer end. The connecting wall has an annular relieved section opening into the space between the skirts so that any distortions imposed upon the snap bead and upon the sealing surface as occasioned by any dimensional and/or shape irregularities in the container neck are reduced by the relief provided between inner and outer engagements with the container neck. This results in an isolation of any distortions of the skirts relative to one another, an isolation of any outer skirt distortion relative to the snap bead, an isolation of any inner skirt distortion relative to the sealing surface, and the maintenance of dimensional stability between the snap bead and the sealing surface.</p> |
