| 摘要 |
A variety of problems have been encountered in providing vessel closures with packings which can easily be peeled off, mainly due to the necessity of bonding the packing to the vessel closure shell sufficiently strongly to ensure that the packing does not fall off, for example when being transported, yet still allowing the packing to be peeled away manually without needing to exert undue force. These difficulties can now be overcome using a vessel closure in which the peel strength of that region (3a) of the peelable interface between two coating layers (3,4) bonding packing (9) to a vessel closure shell (1) which corresponds to the peeling-initiating portion of the packing or is adjacent thereto is lower than the peel strength of other regions (3b) of the peelable interface. |
