Method and apparatus for measuring a characteristic of a plastic container
US7253892B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2005 |
| Grant date | Aug 7, 2007 |
| Priority date | — |
| Expiry date | Oct 11, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7158
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for measuring the wall thickness of plastic containers during a container manufacturing process includes providing a plastic container, the plastic container having a longitudinal axis and at least two side walls spaced radially from the longitudinal axis. The side walls are formed of a material that absorbs light energy in a predetermined molecular absorption band. Light energy is then directed from a source through the at least two side walls of the plastic container in a plane transverse to the longitudinal axis of the plastic container. A portion of the light energy that passes through the sidewalls of the plastic container is sensed, and a signal representing a thickness of the sidewalls of the plastic container is generated from the sensed portion of the light energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.