Closure device
AssigneeWest Corporation
InventorsBarbara Alexander, Patty H. Kiang, Richard Lusch, Val Romberg
Life of this patent
Estimating the term…
Abstract
A device for use with containers, including an elastomeric member sized to engage the container. The member has a first portion for contact with the container to form a seal and a second portion having a polyparaxylylene coating to form a barrier between the member and the contents of the container.
Claims5
A device for use with containers, comprising an elastomeric member sized to engage the container, said member having a first portion for contact with said container to form a seal and a second portion having a polyparaxylylene coating of from 0.1 to 25.0 microns in thickness to form a barrier between said member and the contents of said container, said first and second portion having a boundary area wherein said coating has a decreasing cross section from said coated to said uncoated portion.
A closure device for containers, comprising an elastomeric closure member sized to engage the discharge bore of a container, said member having a first portion for contact with said bore to form a seal having a vacuum retention of at least 96%, and a second portion having a polyparaxylylene coating to form a barrier between said elastomeric member and the contents of the container, said coating being from about 0.1 to about 25 microns in thickness, said first and second portions having a boundary area wherein said coating has a decreasing cross section from said coated to said uncoated portion.
Dependencies are inferred from the claim text.