Method of manufacturing textured-smooth hybrid metal closure caps
US10787295B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2015 |
| Grant date | Sep 29, 2020 |
| Priority date | — |
| Expiry date | Jun 6, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D41/62
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A method of manufacturing a textured-smooth hybrid metal closure cap, and a closing caps produced by the method. The method includes a) the supply of a strip or sheet, made of aluminum alloy known as a “textured” strip or sheet, typically coated on at least one of its faces by a stampable lacquer, b) a first operation for cutting discs, called blanks, c) a step for stamping, in one or more passes, of said blank metal, typically using a stamping lubricant, so as to form a stamped blank, comprising a head and a skirt, typically axially symmetric in the axial direction, d) a step for degreasing said stamped blank, typically intended to eliminate the remaining lubricant, to form a degreased blank that can be lacquered, and e) an optional step of protective lacquering and decoration. After the stamping step, and before the lacquering step, at least one drawing step consisting in passing the stamped blank through drawing rings in order to stretch and thin the metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.