Method of producing a cup-shaped, sterilizable container
US5193265A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1991 |
| Grant date | Mar 16, 1993 |
| Priority date | — |
| Expiry date | Apr 17, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1048
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of producing a cup-shaped sterilizable container from a stretch-drawable composite laminate of a total wall thickness between 30 and 200 .mu.m with an aluminum foil of a thickness less than 40 .mu.m, a sealable plastic inner layer of high extensibility and a plastic outer layer of high extensibility and load-bearing capacity, the side wall of the container running at a side wall angle (a) with respect to the direction perpendicular to the container bottom, is distinguished in that the composite laminate is deep drawn free from folds at a side wall angle of 30.degree. using smooth-walled forming tools then combined deep/stretch drawn and subsequently stretch drawn.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.