Package for light and oxygen sensitive food
AssigneeCelanese Corporation
InventorsGerald S. Kirshenbaum, Elliot A. Vogelfanger
Life of this patent
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Abstract
A container comprising a blow moldable thermoplastic frame defining a volume for the storage of a fluid. The thermoplastic frame is opaque barring the transmittance therethrough of light having a wavelength in the range of between about 3500 and 5500 Angstrom units. The container is further characterized by an overwrap of a thermoplastic film disposed about the thermoplastic frame. The overwrap film is characterized by its ability to bar the transmittal therethrough of oxygen. The container is especially suited for the storage, at or near ambient conditions, of liquid food subject to spoilage by the action of light waves, oxygen and odor permeation.
Claims11
A package comprising:
- a blow molded thermoplastic container defining a volume filled with a liquid food sensitive to light and oxygen, said container providing means for ingress and egress of said liquid, said thermoplastic container including titanium dioxide, present in a concentration of at least 0.5% by weight, based on the total weight of the container which essentially bars the transmittance therethrough of light having a wavelength in the range of between about 3500 and 5500 Angstrom units;
- and
- an overwrap of polyethylene terephthalate film having a thickness of about 0.5 to 2.5 mils and disposed over said thermoplastic container, completely enclosing it.
Dependencies are inferred from the claim text.