Ball Packaging has acquired Neuman Aluminum, a producer of aluminium slugs used to make extruded aerosol cans, beverage bottles, tubes etc. This is a strategic move to get access to critical technology. In the existing beverage can oligopoly it is crucial to get a technological advantage.
https://packintel.wordpress.com/2010/08/02/on-the-ball/

The Aluminum Beverage Can
The method begins with a circular slug that has a diameter equal to that of the can. A punch driven into the slug forces material to flow backward around it, forming the can. The process thus made the side walls and the bottom from one piece. The top was added after filling.
http://www.chymist.com/Aluminum can.pdf

SRPS EN 570:2009
- Naslov na srpskom jeziku
Aluminijum i legure aluminijuma - Tablete za udarno istiskivanje dobijene od plastično prerađenih proizvoda - Specifikacija
- Naslov na engleskom jeziku
Aluminium and aluminium alloys - Impact extrusion slugs obtained from wrought products - Specification
- Apstrakt na srpskom jeziku
Ovim dokumentom utvrđuju se tehnički zahtevi za kontrolisanje i isporuku,tolerancije mera i oblika i drugi zahtevi za pljosnate ili preoblikovane tablete za udarno istiskivanje dobijene od plastično prerađenog aluminijuma i plastično prerađenih legura aluminijuma. Primenjuje se za tablete proizvedene ili bušenjem valjanih proizvoda ili sečenjem proizvoda dobijenih presovanjem istiskivanjem.
- Apstrakt na engleskom jeziku
This document specifies the technical conditions for inspection and delivery, tolerances on dimensions and form and other requirements for flat or preformed wrought aluminium and wrought aluminium alloy slugs for impact extrusion. It applies to slugs produced either by punching of rolled products or by cutting of extruded products. Slugs covered in this document are suitable for the manufacture of impact extruded parts for packaging and industrial applications.
http://www.iss.rs/en/standard/?natstandard_document_id=22057...