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US 12,396,534 B2Granted
Multi-material lens package
AssigneeJohnson & Johnson Vision Care, Inc.
InventorsWilliam Gooch, Timothy Burkill, Scott F. Ansell
Life of this patent
Estimating the term…
Abstract
There is described a contact lens package containing a bowl for holding a contact lens and a flange around the bowl which may be made from a different polymer material than the bowl. The packages comprise at least one interface tab with at least one slot so that the second polymer material forming the flange can encapsulate the tab providing a mechanical interlock displaying good flexural strength.
Claims51
A package comprising:
- a package base comprising a bowl comprising
- a well for holding a lens,
- a well edge, a heat seal region outside the well edge and a peripheral edge outside the heat seal region, the bowl having at least one bonding tab along at least a portion of the peripheral edge;
- and
- a flange comprising a bonding overlay which is durably thermally bonded to the bonding tab at an bonding.
2 more elements
The package of any one of the foregoing claims wherein the bonding tab has a roughened surface along the interface.
A process for forming a package base comprising
- injection molding a bowl from a bowl polymer material, the bowl comprising
- a well for holding a lens,
- a well edge, a heat seal region outside the well edge and a peripheral edge outside the heat seal region, the bowl having at least one bonding tab along at least a portion of the peripheral edge;
- and
- injection molding a flange from a flange polymer material such that the flange polymer material contacts the bonding tab forming a bonding overlay which is durably thermally bonded to the bonding tab at an interface.
2 more elements
Dependencies are inferred from the claim text.