Process for treating container preforms with non-contacting plasma treatment
US11701443B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 18, 2017 |
| Grant date | Jul 18, 2023 |
| Priority date | — |
| Expiry date | Sep 9, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/712
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a process for treating at least one hollow body made of thermoplastic material, such as a preform or a cap, the treatment process successively including at least the following steps: a first step, consisting in treating at least the inside of the hollow body using hydrogen peroxide; a second step, consisting in heating the hollow body; a third step, consisting in treating the hollow body with plasma in order to reduce the concentration of hydrogen peroxide residues. Also disclosed is a plant for manufacturing containers in which the process is carried out in particular by way of a unit for the plasma treatment of the preforms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.