| 摘要 |
A container of the kind having a rigid base to which a flexible cover is sealed by means of an inflatable sealing tube is formed with a rigid support plate as part of the base, the support plate being carried on a support member having an upwardly-extending pressure wall surrounding and facing inwardly towards the edge of the plate. The pressure wall extends upwardly from below the level of the edge of the plate to above that level and the sealing tube is located between the edge of the plate and the pressure wall so that when the tube is inflated the edge of the plate forms a localized pressure region along the length of the tube. |
