公开(公告)号：US09944440B2

公开(公告)日：2018-04-17

申请号：US15261975

申请日：2016-09-11

申请人： Greif International Holding BV

发明人： Pierre Abraham

IPC分类号： B65D51/16 ,  B65D41/04 ,  B65D53/04

CPC分类号： B65D51/1622 ,  B65D41/0442 ,  B65D41/045 ,  B65D51/1616 ,  B65D51/1666 ,  B65D51/1694 ,  B65D53/04 ,  B65D2205/00 ,  B65D2205/02 ,  B65D2251/0015 ,  B65D2251/0093

摘要： A container closure comprises an annular region forming a counterface against which a gas permeable, liquid impermeable sealing element may be applied so as to urge the sealing element into sealing engagement with the rim of a container opening. The annular region comprises a gas pathway from an interior space opposite the container opening to the exterior of the annular region. The gas pathway may be of closed cross-section extending through the annular region. Alternatively the gas pathway may be of open-sided cross-section and provided in the counterface. Yet alternatively the annular region may comprise a washer, with the gas pathway provided at least partly in the washer and/or at least partly in the remainder of the annular region. A gas permeable, liquid impermeable sealing foil for bonding to a container rim is also disclosed.