Easy-open lid in which score cut edge can be covered and process for preparation thereof
US4887732A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 1988 |
| Grant date | Dec 19, 1989 |
| Priority date | — |
| Expiry date | Apr 11, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/214
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The primary object of the present invention is to provide an easy-open lid having an opening score defining a portion to be opened, an opening tab formed on the portion to be opened and a covering strip of a protecting resin formed to stride over the opening score beyond both the sides of the score, which is excellent in the rusting-preventing property of the score portion and the stain resistance of the covering resin strip, and a process for the preparation of this easy-open lid. In the easy-open lid of the present invention, an organic resin coating is formed on the outer surface of the lid, the covering resin strip is formed of a plastisol of a vinyl chloride resin containing at least one additive selected from the group consisting of anchoring fillers, tackifiers and amino resins, and the covering resin strip is peelably bonded to the organic resin coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.