Injection blow molded nursing bottle of polyethersulfone
US6516963B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 2000 |
| Grant date | Feb 11, 2003 |
| Priority date | — |
| Expiry date | Dec 18, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/7158
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An object of the present invention is to improve shock resistance of nursing bottles formed of a PES resin so as to provide them with such a sufficient falling impact strength that they can be used pleasantly and safely. The injection-blow-molded PES nursing bottle of the present invention has a gate flash (6) at a central portion of a bottom (5), the flash being generated when the resin is previously injected to prepare a parison. The central bottom portion (5) is raised to be of a convex shape to bulge up towards a mouth of the bottle. A height ‘h’ of such a raised bottom portion is from 9% to 20% of an inner diameter ‘R’ that is possessed by a floor-engaging rim of the bottom, the rim being generally circular in a bottom plan view.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.