Barrier spout for a flexible bag and a flexible bag having a barrier spout
AssigneeScholle IPN Corporation
InventorsDavid Bellmore, Gail Becke, Chris Murray, Andrew Crick
Life of this patent
Estimating the term…
Abstract
A barrier spout having a base flange and an upstand portion. The base flange has a top surface, a bottom surface and an outer surface. The upstand portion has a proximal end extending from the base flange terminating at a distal end. An upper opening is defined at the distal end, and a lower opening is defined at the proximal end. The base flange and the upstand portion each comprise a three layer co-molded configuration including an outer layer, an inner layer and a central layer. The central layer has an oxygen transmission rate that is less than an oxygen transmission rate of either of the outer layer and the inner layer.
Claims18
A barrier spout comprising:
- a base flange having a top surface, a bottom surface and an outer surface;
- an upstand portion having a proximal end extending from the base flange terminating at a distal end, with an upper opening at the distal end, and a lower opening at the proximal end;
- a removable diaphragm extending across one of the upper opening and the lower opening, which removable diaphragm being cuttable at the respective distal or proximal end at which the removable diaphragm is positioned upon molding thereof
- wherein the base flange, the upstand portion and the removable diaphragm structurally comprise a co-injection molded structure, base flange and the upstand portion each comprise a three layer co-injection molded configuration, with an outer layer, an inner layer and a central layer, the central layer having an oxygen transmission rate that is less than an oxygen transmission rate of either of the outer layer and the inner layer.
A method of manufacturing a barrier spout comprising the steps of:
- co-injection molding a central layer surrounded by an inner layer and an outer layer into a barrier spout, with the central layer having an oxygen transmission rate that is less than an oxygen transmission rate of either of the outer layer and the inner layer, the barrier spout comprising:
- a base flange having a top surface, a bottom surface and an outer surface;
- an upstand portion having a proximal end extending from the base flange terminating at a distal end, with an upper opening at the distal end, and a lower opening at the proximal end;
- a removable diaphragm extending across one of the upper opening and the lower opening, effectively sealing at least a portion of a respective one of the upper opening and the lower opening;
- cutting the removable diaphragm so as to define a respective one of the upper opening and the lower opening across which the removable diaphragm extends, prior to attachment of the spout to a bag.
Dependencies are inferred from the claim text.