Method for forming and filling a container by monitoring the pressure of liquid injected in the container
US11338494B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2017 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Feb 9, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7158
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method comprising a first injection step, wherein a first predetermined volume of pressurized liquid is injected into the preform, the predetermined volume corresponding to a fraction of the container volume, the first injection step causing an expansion of the preform into a first intermediate container. The method further comprising a second injection step, wherein, once the first predetermined volume of liquid has been injected, the liquid injection speed is reduced and the pressurized liquid is further injected in the first intermediate container until a predetermined switch pressure in the liquid injection circuit is reached, the second injection step causing an expansion of the first intermediate container into a second intermediate container, and —a third injection step starting once the predetermined switch pressure is reached, wherein the liquid injection speed is decelerated until the liquid injection is stopped.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.