Container lid structure and method for manufacturing the same
US4988013A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1988 |
| Grant date | Jan 29, 1991 |
| Priority date | — |
| Expiry date | Dec 22, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2517/0088
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A container lid structure made essentially of plastics. The lid structure includes a lid frame and a lid plate. The lid plate includes an inner layer comprising a metal foil coated at the opposite sides by plastic layers and connected at the peripheral portion with the lid frame and a core made of a material which is not adhesive to or has a weak bonding power with the plastic material for the lid frame and for the plastic layer of the inner layer. The core is laid over the inner layer with the peripheral portion in an abutting relationship with the inner periphery of the lid frame. A holding member is formed on the core and bonded to the inner layer through apertures in the core. A pulling tab is also formed on the core and bonded to the inner layer through an aperture in the core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.