Method for easily opening a heat-sealed seal on the locking ring of a glass container
US9302837B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2011 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Jul 18, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D77/2032
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method for opening a seal including a metal foil and a layer of thermoplastic resin via which the seal is heat-sealed to the rim of a glass jar or equivalent container, the rim having been coated beforehand with a heat-sealing primer, the heat-sealed seal providing hermetic closure of the glass jar or equivalent container, where the initial and final tear forces are not more than 28 N on peeling of the seal at 90° at a speed of 300 mm/min; a glass jar or equivalent container suitable for implementation of this method, where the coating of heat-sealing primer contains an organic and/or inorganic material in which organic and/or inorganic fillers are incorporated; and the application of this method or this glass jar or equivalent container to the packaging of processed food products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.