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| Number | Title | Issue Date |
| 7311442 | Air valve for a fillable poly bag An air valve for a poly bag that permits the escape of air from the bag as it is filled by a filling tube. The air valve consists of a plurality of slitted openings in one top corner of the bag and a valve flap mounted in the poly bag near the slitted openings that ... | 12/25/2007 |
| 6913803 | One-way valve for inflatable package A one-way valve is formed by connecting a third layer of a polymeric film to one of two film layers that are sealed about the perimeter to form an inflatable member. A series of spaced seals connect the third layer so as to form a serpentine flow path across the inf... | 07/05/2005 |
| 6334711 | Liquid-tight container and process for conditioning a liquid in said container This leaktight container includes four superimposed sheets (1, 2, 3, 4). The sheet (1) includes a precut tab (5) welded (13) to a portion of the sheet (2). A passage (10) is formed between these sheets (2) and (3) and acts as a valve between the inside an... | 01/01/2002 |
| 5832698 | Method of manufacturing a flexible package comprising a pouring channel, and package obtained by the method A method for forming a discharge channel (6) in a flexible packaging during the manufacture thereof. The channel is adjacent to at least one of the edges of the packaging and extends from one end to the other of said packaging. At least one of the channel... | 11/10/1998 |
| 5351828 | Inflatable foil sachet, especially for packaging purposes The invention relates to a foil sachet (1) with at least one chamber (7) consisting of an upper and lower foil (2, 3) secured together by a closed seam (5, 6). In order to fill the chambers (7) with a substance, especially air, there is a channel (10, 14)... | 10/04/1994 |
| 5024538 | Packaging bag, especially for cooked ham, provided with drain valve A packaging bag, in particular for cooked ham, made of thermoweldable material and provided, on at least one of its walls, with a drainage hole. The inside of the bag also includes a drainage valve secured at the wall of the bag. The drainage valve compri... | 06/18/1991 |
| 4983138 | Inflatable container with self-sealing valve A one layer self-sealing, self-regulating, two-way flat valve for fluid containers, such as toy balloons and the like formed of two heat sealed film layers, is provided. The container having two container film layers joined at the perimeters thereof, an e... | 01/08/1991 |
| 4913293 | Container of flexible material A container (10) of flexible material comprises a wall (16) having a row of serrations (18) therein extending diagonally of a corner thereof and an internal sheet (19) which is adhesively secured to an inner surface of the wall (16) by peelable pressure s... | 04/03/1990 |
| 4672688 | Flexible container with internal filling chute The present specification relates to flexible containers having an aperture through which the container is filled or dispensed, the container having a flexible flap overlying the aperture so as to seal the container once filled. The container in accordanc... | 06/09/1987 |
| 3968925 | Anti-reflux valve An anti-reflux valve mounted at the inlet port to the fluid collection chamber of a fluid collection bag and having a thin flexible valve element which is retained for limited floating movement over the inlet port and which flexes to permit flow of fluid ... | 07/13/1976 |
