Synthetic closure
US5904965A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1997 |
| Grant date | May 18, 1999 |
| Priority date | — |
| Expiry date | Sep 17, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31909
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
By achieving an extruded, foamed core formed from plastic material peripherally surrounded and integrally bonded with a cooperating synthetic, plastic, extruded, outer layer, a unique, multi-component, multi-layer synthetic closure is provided which may be employed as a bottle closure or stopper for any desired product, whether the product is a liquid, a viscous material, or a solid distributed in a bottle or container and dispensed through the open portal of the container neck. The present invention achieves a mass producible, resilient, synthetic bottle closure which is employable for any desired bottle, including wine. By employing the present invention, a multi-component or multi-layer synthetic closure is attained which possesses physical properties substantially equal to or better than the physical properties found in cork material, which has caused such cork material to be the principal closure material for wine bottles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.