Vacuum packaging
Patent 4744199 Issued on May 17, 1988. Estimated Expiration Date: 
February 10, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 10, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 32018 1594512 2870954 3714754 3851437 Apparatus for evacuating and sealing bags Vacuum packing device Self sealing vacuumed package Method and apparatus for packaging perishable products in a reduced air atmosphere Sack, and a method and apparatus for filling, removing air from, and closing the sack Patent #: 4581764 InventorAssigneeApplicationNo. 06/828059 filed on 02/10/1986US Classes:53/434, Flexible preform cover (e.g., bags, pouches)426/410, In flexible wrapper or container426/418, Storing solid material under controlled condition53/512With preformed bagExaminersPrimary: Culver, Horace M.Attorney, Agent or FirmInternational ClassesB65D 81/20 (20060101)B65B 31/02 (20060101) Foreign Application Priority Data1985-02-12 GBAbstractA process of packaging goods particularly foodstuffs in which the goods are placed in a first container for example a plastics bag or a tray having a deformable lid, sealing the container except for an aperture provided by an open valve. The container is then placed in a second container having rigid walls. A vacuum is then created in both containers after which the inner container is completely sealed by for example closing the valve whilst preventing the entry of undesireable substances. In a preferred process an inert or preserving gas is introduced into the first container prior to sealing. | |
