Container or molded package with buffering capacity
OwnerKenneth Charles Wurtzelinventor
Life of this patent
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Abstract
A container for a pH-sensitive product. The container has an openable container body defining an interior volume for holding the product. More specifically, a rigid container defining an interior volume for holding a pH-sensitive product, and comprising at least an inner layer and an outer layer, the inner and outer layers being coextruded layers, the inner layer comprising a polymeric material and a buffer material, the outer layer comprising a moisture-barrier material.
Claims21
A multilayer container for storing pH-sensitive products comprising:
- a buffer layer comprising a first polymeric material and a buffer;
- and
- an outer layer comprising a second polymeric material.
A multilayer container for storing pH-sensitive products comprising:
- a buffer layer comprising a first polymeric material and a buffer, wherein the buffer is present at a range of from about 0.01 to about 5 weight percent of the desiccant layer;
- an outer, layer comprising high density polyethylene;
- and
- a middle layer comprising a barrier material.
A multilayer container for storing pH-sensitive products comprising:
- a buffer layer comprising a first polymeric material, a foaming agent and a buffer;
- an outer layer comprising a second polymeric material;
- and
- a desiccant layer disposed between the buffer layer and the outer layer, the desiccant layer comprising calcium oxide.
A method for making a multilayer container, comprising:
- providing a first masterbatch comprising a buffer and a first polymeric material;
- providing a second masterbatch comprising a second polymeric material;
- blending the first masterbatch and the second masterbatch with a third polymeric material to form a subsequent blend;
- forming the subsequent blend and high density polyethylene into a preform via co-extrusion or via co-injection molding;
- and
- blow-molding the preform to form the container.
Dependencies are inferred from the claim text.