Method and apparatus for producing liquid-contents-filled containers from preforms by contents being introduced into the preform under pressure
US10675804B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2017 |
| Grant date | Jun 9, 2020 |
| Priority date | — |
| Expiry date | Feb 3, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7158
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method and an apparatus for producing liquid-contents-filled containers (22) from preforms (1) by contents being introduced into the preform (1) under a filling pressure, wherein the contents are placed under pressure by a pressure pump (7) and are introduced into the preform (1) at a molding and filling station (3) by a filling valve (6). A pressure accumulator (10) arranged between the pressure pump (7) and the filling valve (6) is subjected to pressure and is filled with a volume of contents by the pressure pump (7). The invention is distinguished in that a displacement pump (26) having a filling chamber (28) for the contents and having a displacement body (30) guided so it is movable therein is provided, wherein the displacement body (30) divides the chamber (28) into a first partial chamber (28a) on the filling station side and a second partial chamber (28b) facing away from the filling station, each of which can be brought into a fluidic connection with the pressure accumulator (10). The displacement body (30) has a drive connection to a drive unit (32) and is drivable by the drive unit (32), wherein when the filling valve (6) is opened, the drive u…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.