Squeeze dispenser with self closing valve
Automatic closure for containers having a pinch-off fold
Disposable portion package
Disposable or reusable container for flowable material
ApplicationNo. 250737 filed on 05/27/1994
US Classes:222/212, With flow controllers or closures222/107, Nonmetallic222/494, Spring form, resilient or compressible flow controller or closure383/7, Unitary with bag (e.g., element formed by hand hole)383/23Hook-type
ExaminersPrimary: Huson, Gregory L.
Attorney, Agent or Firm
Foreign Patent References
International ClassB65D 037/00
AbstractA self-closing liquid dispensing package comprises a liquid container and a self-closing flat channel valve. The channel valve has an inlet adjacent to and in liquid communication with the liquid container. It also has a mouth, a first sheet member, and a second sheet member wherein the first and second sheet members have an original planar position and longitudinal edges, are indexed face-to-face, and are sealed together along longitudinal edges and wherein the first and second sheet members are sufficiently flexible to arch away from each other to form a flow channel therebetween to permit a flow of contained liquid in response to external pressure applied to the liquid container. At least one of the sheet members is sufficiently resilient to return the first and second sheet members to the original planar position when the external pressure is released. A lateral width of the inlet is greater than a lateral width of the mouth, and the self-closing flat channel valve has an additional portion between the inlet and the mouth which has a lateral width greater than the lateral width of the inlet and the lateral width of the mouth.