Receptacles – Closures – Removable closure retained by ductile in situ deformation
Patent
1994-11-17
1996-12-03
Elkins, Gary E.
Receptacles
Closures
Removable closure retained by ductile in situ deformation
220378, 220614, 215347, B65D 4110
Patent
active
055799442
ABSTRACT:
A multi-layer gasket for providing a seal between a mounting cup and a container comprising a middle layer of rigid plastic material and inner and outer layers of softer plastic material. The middle layer supports the inner and outer layers, which provide sealing surfaces with the mounting cup and the container bead. A gasketed mounting cup comprising a panel, a skirt integral with and depending from the periphery of the panel, wherein the skirt is outwardly flared to form an annular channel for receiving a container bead that defines the container opening and a multi-layer gasket positioned in the channel portion of the mounting cup, which gasket comprises a middle layer of rigid plastic material, an inner layer of soft plastic material adjacent the channel of the mounting cup and an outer layer of soft plastic material for engaging the container bead. The middle layer is preferably high density polyethylene or polypropylene and the inner and outer layers are preferably linear low density polyethylene. A layer of thermally activated adhesive can be placed adjacent the inner layer.
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Hafner Hans
O'Toole Timothy
Cronin Stephen
Elkins Gary E.
Precision Valve Corporation
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