Multi-layer containers
US5676267A · kind A · utility
111Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 1995 |
| Grant date | Oct 14, 1997 |
| Priority date | — |
| Expiry date | May 31, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2495
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A multi-layer preform for forming multi-layer containers includes an extruded inner barrier layer containing polyethylene naphthalate, said inner layer having an upper portion adapted to be formed into an upper portion of a container, an intermediate portion adapted to be formed into an intermediate portion of a container, an extruded and a base portion adapted to form a base portion of a container. The preform includes an outer injection molded layer. The inner layer has a thickness which differs from the base portion to the upper portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.