| 摘要 |
A lid is provided for sealing containers intended mainly for containing foodstuff to be pasteurised or substances which generate a pressure in the container greater than the external pressure. The lid, constituted by a cap portion (8) moulded from a plastics material which is resistant to mechanical forces, is formed both with a wall (10) extending transversely of the mouth (2) of the container and with a side wall (7) rigid with the transverse wall (10). The cap portion (8) also has a plate-like part (11) of yielding plastics material moulded directly onto the inner surface (9) of the transverse wall (10) of the cap portion (8) so as to form therewith a unitary body without interstices. This avoids the possibility of substances being retained in the lid and deteriorating which could jeopardize the hygienic nature of the product placed in the container, particularly upon re-use of the latter. |
