Method for treating an elastomer packaging element, and packaging element thus treated
US10995190B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2016 |
| Grant date | May 4, 2021 |
| Priority date | — |
| Expiry date | Nov 9, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2203/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of treating an elastomer packaging element (10), in particular a stopper for medical or pharmaceutical use, the packaging element (10) having a bottom portion (11) that is to penetrate into a neck (21) of a container (20) and a top portion (12) that is to co-operate in sealed manner with a top surface (22) of said neck (21) of the container (20). The top surface of the top portion (12) is treated by a plasma-assisted polymerization method at atmospheric pressure using a plasma flame created at atmospheric pressure and into which a monomer is injected, the monomer polymerizing on the top surface in order to form a coating (18).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.