Preform for continuous standing ring bottle
US5455088A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 26, 1994 |
| Grant date | Oct 3, 1995 |
| Priority date | — |
| Expiry date | May 26, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1397
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A plastic bottle having a neck portion defining an opening, a generally tubular bottle body portion depending from the neck portion, and an integral bottle bottom structure closing a lowermost end of the bottle body portion including a continuous standing ring circumscribing a central push-up region is blow molded from a preform which includes a generally tubular preform body portion having an outside wall face and an inside wall face and an integral preform bottom structure closing a lowermost end of the preform. The preform body includes a cylindrical thickened portion which upon blowing forms said continuous standing ring. The central push-up region of the plastic bottle is formed from that portion of the preform below the cylindrical thickened portion. The portion of the preform below the cylindrical thickened portion includes features contributing to enhanced bottle bottom strength while minimizing the amount of resin employed in the structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.