Process for manufacturing a sealing ring for packaging

Details Process for manufacturing a sealing ring for packaging Process for manufacturing a sealing ring for packaging

1991-01-25

1992-11-17

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Making hole or aperture in article

264294, 264296, 2643287, 26432814, B28B 0716, B29C 4504

Patent

active

051641348

ABSTRACT:
Packaging means such as a bottle, jar or other receptacle, having a sealing ring, as well as a process for manufacturing such a seal. These packaging means include containers especially of the type to be kept in stock and/or stored. The packaging means include at least a container and a lid, between which is arranged a sealing ring defining an internal space in relation to the outside of the packaging means, with the packaging means being capable of containing a product or any other substance whatsoever under conditions of vacuum or partial vacuum. The sealing ring includes means for bringing about communication between the internal space and the outside of packaging means, being blocked while the vacuum is being brought about and/or maintained and capable of being unblocked in order to facilitate opening the packaging means.

REFERENCES:
patent: 793525 (1905-05-01), Hill
patent: 1733322 (1929-10-01), Thebaud
patent: 2187395 (1940-01-01), Glocker
patent: 2437515 (1948-03-01), Glocker
patent: 3996329 (1976-12-01), Holland et al.
patent: 4142645 (1979-03-01), Walton
patent: 4778072 (1988-10-01), Newman
European Search Report-EP 88 40 3256.

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