Multiple layer flexible sheet structure
US4551371A · kind A · utility
18Cited by
2References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 4, 1983 |
| Grant date | Nov 5, 1985 |
| Priority date | — |
| Expiry date | Nov 4, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31928
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A multiple layer polymeric-based sheet structure is suitable for forming dispensing tubes. The abuse resistance of the tube is improved by incorporating in the sheet structure a layer of oriented polypropylene. A layer of linear low density polyethylene provides for heat sealing and has substantially improved stress crack resistance and resistance to generation of polydust.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.