Formation of indicia in the base of a blister pack for transference to a body cast therein
US6391237B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2000 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Feb 18, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31692
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A laminated film in which a metal foil is sandwiched between two polymeric films is cold formed to define one or more blisters, and the base of the blister stamped with indicia, in two discrete stages. The blister is formed in the first stage using a standard technique of advancing a pin in a direction transverse relative to the plane of the film. According to the invention, once the blister forming stage is completed, indicia are stamped into the base of the blister in the second stage by advancing a die from one side thereof to clamp the blister base against a mold held against the other side. The direction of the die and disposition of the die and mold may be selected such that the indicia project inwardly or outwardly from the blister base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.