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US 4,809,876 AGranted
Container body having improved gas barrier properties
AssigneeAluminum Company of America
InventorsKathleen M. Tomaswick, Alfred F. LaCamera
Life of this patent
Estimating the term…
Abstract
A container body for foods and beverages having reduced gas and vapor permeability. The container body is preferably formed from a plastic resin and coated with a thin film of diamond-like carbon.
Claims20
A container body for food and beverage products comprising a hollow body having an open end, said body comprising a plastic resin or a wax having at least a portion coated with a film which imparts reduced gas and vapor permeability, said film comprising diamond-like carbon or diamond carbon.
In a process for producing a plastic food or beverage container which includes the steps of
- (a) making a preform;
- (b) forming the preform into a container body having an outwardly facing exterior surface portion and an inwardly facing interior surface portion;
- the improvement comprising
- (c) coating the exterior surface portion or the interior surface portion with a film of diamond-like carbon or diamond carbon.
1 more element
Dependencies are inferred from the claim text.