| 摘要 |
<p>Pneumatically compensated joint for the bottle or pot with a fixed closure comprises a sealed envelope of flexible polyethylene sheet forming an elastically deformable cushion at least in the compression zone of the joint between the container and the lid. The cushion is filled in the uncompressed state with a gas at least 1 atm pressure. Pref. the cushion is lenticular or annular.</p> |
