Closure package having a crimped liner pull tab and forming method therefor
US5797509A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 18, 1997 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Feb 18, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2577/205
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A liner for use with a closure package and an associated container includes a pull tab that is crimped so that the tab remains in place during assembly of the closure package. The closure package includes a cap having a top wall portion and a depending skirt portion. The cap has an engaging element formed therein, that is engageable with an engaging portion of the container. The liner is formed of a laminate having a resilient material and an adhesive layer. The liner includes a central portion configured for placement in the cap abutting the top wall portion and a tab extending from the central portion. The tab is folded over so as to rest, at least in part, on the central portion. The tab and central portion define a hinge region which defines a hinge line at a juncture of the tab and the central portion. The hinge region has a deformation area formed therein, in at least two directions relative to the hinge line, to lock the tab in position resting, at least in part, on the central portion. A method of forming the closure package includes cutting a liner material to form a tab and folding the tab onto the material to form a hinge line at a juncture thereof. The liner material is…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.