Source: http://www.google.com/patents/US4251976?dq=3984803
Timestamp: 2017-10-19 21:16:45
Document Index: 168235456

Matched Legal Cases: ['art 28', 'art 28', 'art 28', 'art 28', 'art 28', 'art 28', 'art 28']

Patent US4251976 - Process for packing foodstuffs under vacuum - Google Patents
Disclosed herein is a simple and economical process for packing foodstuffs under vacuum in the home in a way compatible with that achieved on a large industrial scale with the use of complex, costly equipment. The process in question comprises, among other things, the following operations: the preparation...http://www.google.com/patents/US4251976?utm_source=gb-gplus-sharePatent US4251976 - Process for packing foodstuffs under vacuum
Publication number US4251976 A
Application number US 06/065,750
Also published as CA1117495A, CA1117495A1, DE2932183A1
Publication number 06065750, 065750, US 4251976 A, US 4251976A, US-A-4251976, US4251976 A, US4251976A
Inventors Paolo Zanni
Original Assignee Fiap S.R.L.
Process for packing foodstuffs under vacuum
US 4251976 A
1. A process for packing foodstuffs under vacuum, essential features of which are that it comprises the following operations:
the preparaion of a bag 10, made of flexible heat sealable plastic material having, at one extremity, an open mouth 12;
the insertion into the bag 10 of the product 14 to be preserved under vacuum;
the preparation of a spacer member 26 provided with at least one tubular projecting part 28, the free extremity of which has a cutting edge 30, while the other extremity communicates with at least one opening 32 directed orthogonally with respect to the said tubular projecting part 28;
the insertion of the spacer member 26 into the iside of the bag 10, a short distance away from the mouth 12 of the bag 10, the tubular projecting part 28 thereof being directed perpendicularly with respect to the plane of the bag 10;
the pressing of one of the walls of the bag 10 against the said tubular projecting part 28 so that the latter may perforate and pass through the said wall of the bag 10;
the carrying out of a linear heat sealing operation 42 on the walls of the bag 10, in the area in between the spacer member 26 and the mouth 12 of the bag 10;
the extraction of the air contained in the bag 10 via the tubular projecting part 28 of the spacer member 26;
the carrying out of a second linear heat sealing operation 52 on the walls of the bag 10, in the area in between the product 14 to be preserved and the spacer member 26, in a position adjacent to the latter;
the cutting of the bag 10 contiguously to the second sealing line 52.
2. A process according to claim 1, essential features of which are that it comprises, furthermore, the following operations:
the preparation of a tubular pipe union 46, shaped like a dome, connected to a source of vacuum and provided with sealing means 44 that give elastically in the region of the edge thereof;
the placing, through pressure, of the edge of the said tubular pipe union 46, shaped like a dome, on the bag 10 in such a way that the said pipe union 46 seals circumferentially the aforementioned tubular projecting part 28 of the spacer member 26 that protrudes from the bag 10, prior to the stage when the air is sucked out of the bag 10.
3. A process according to claim 1, essential features of which are that it comprises, furthermore, the following operations:
the preparation of a tensioning member 16 of a length substantially the same as the width of the bag 10, which is provided with a plurality of transverse passages 24;
the insertion of the tensioning member 16 into the inside of the bag 10 prior to the insertion of the spacer member 26, so that the extremities of the former touch against the lateral edges of the bag 10.
4. A process according to claim 1, wherein the spacer member 26 comprises an elongated quadrangular plate 34, made of rigid material, which is of a length substantially the same as the width of the bag 10, and has running through it the aforementioned tubular projecting part 28 that extends, cantilever fashion, perpendicularly from one of its major dimensional sides.
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EP1841652A2 * Jan 11, 2006 Oct 10, 2007 Unovo Inc. Method and apparatus for evacuating and sealing containers
EP1841652A4 * Jan 11, 2006 May 5, 2010 Unovo Inc Method and apparatus for evacuating and sealing containers
U.S. Classification 53/433, 426/410, 53/434, 53/512