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US 2022/0054693 A1Published application
A Multilayer Test Pack for Sterilization Monitoring
Assignee3M Innovative Properties Company
InventorsG. Marco Bommarito, Timothy J. Nies, Paul N. Holt
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Abstract
The disclosed multilayer test pack comprises a channel lamina to form a recessed channel, and then a seal layer covers the recessed channel to form an embedded channel By providing the recessed channel in a thin-film channel lamina, the recessed channel tolerances are better controlled. Further, using thin films for the channel lamina, which can be formed into a roll, allows for a continuous unrolling and continuous bonding to a seal layer.
Claims20
A multilayer test pack comprising:
- a channel lamina comprising a channel surface, a covering surface opposite from the channel surface, wherein the channel surface comprises:
- a bonding surface;
- a recessed channel extending from the first bonding surface into the channel surface;
- a seal layer comprising a seal surface and an outer surface opposite from the seal surface, wherein the seal surface is bonded to the bonding surface;
- an embedded channel contained between the recessed channel and the seal surface;
- wherein the embedded channel extends from an inlet port exposed to an external environment and an outlet port exposed to a sealed cavity;
- wherein the sealed cavity is formed in a layer of multilayer test pack other than the channel lamina.
4 more elements
A method of making a multilayer test pack comprising:
- providing a channel lamina comprising a channel surface, a covering surface opposite from the channel surface, wherein the channel surface comprises:
- a bonding surface;
- a recessed channel extending from the first bonding surface into the channel surface;
- providing a seal layer comprising a seal surface and an outer surface opposite from the seal surface;
- bonding the seal surface to the bonding surface to form an embedded channel between the recessed channel and the seal surface;
- wherein the sealed cavity formed in a layer of the multiplayer test pack other than the channel lamina.
3 more elements
(canceled)
Dependencies are inferred from the claim text.