Plastics tube head provided with a lining having a barrier effect and an internal member which can be used for this lining
US5556678A · kind A · utility
71Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1991 |
| Grant date | Sep 17, 1996 |
| Priority date | — |
| Expiry date | Nov 15, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31928
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a tube head equipped with an internal lining having a barrier effect, the internal lining consists of a multi-layered polymeric element fixed by an external surface layer of the element to a plastics annular covering of the head, the element also has one or more polymeric layers having a barrier effect and a total thickness of between 0.008 and 0.05 mm and an internal surface layer of polyolefin or of polyester. The invention also relates to such thermoformed monobloc becoming the internal lining element. The invention is suitable for the production of numerous tubes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.