High stretch ratio preforms and related containers and methods
US9821505B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2015 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Nov 14, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/712
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A generally hollow preform for making a stretch blow-molded container may include a threaded finish portion; a neck portion depending from the finish portion; a transition portion depending from the neck portion; a main portion depending from the transition portion; and a closed, generally rounded tip portion depending from the main portion. The preform may include stretch ratios with respect to the container including an axial stretch ratio of about 3.0 to 3.5, a hoop stretch ratio of about 5.0 to 5.5, and a total stretch ratio of about 15 to 19.25. In some embodiments, high stretch ratios may be achieved with less material, yielding substantial cost savings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.