Manufacture of plastic containers having internal identifying indicia molded on a container wall
US7455808B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 13, 2005 |
| Grant date | Nov 25, 2008 |
| Priority date | — |
| Expiry date | Dec 7, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7158
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of making a container preform includes providing a mold core having at least one surface recess in the form of negative-mold indicia, and molding a preform around the core such that the preform has internal raised indicia formed by the at least one recess in the core. The preform preferably subsequently is blow-molded to form a container having the raised indicia on an inside surface of the container. This raised indicia on the inside surface of the container may be viewed from outside of the container to confirm that the container is genuine. In accordance with various embodiments of the disclosure, the raised internal indicia may be on the bottom wall, sidewall, shoulder and/or neck of the container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.