Packaging material and also use of the material for the manufacture of containers
US5234763A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 8, 1992 |
| Grant date | Aug 10, 1993 |
| Priority date | — |
| Expiry date | Jan 8, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Flexible packaging material in the form of a sheet or strip for shaping into form-stable, liquid-tight containers through fold forming, thermo-forming or other mechanical processing for shaping the material. The material (10) has a stiffening skeletal layer (11) composed of a mixture of plastic and filler to the amount of between 50 and 80% of the total weight of the mixture, and also at least one outer layer (12; 13) of plastic of the same kind as the plastic in the skeletal layer (11). With the aid of the said outer plastic layers the material is given excellent sealing properties, at the same time as the filler in the skeletal layer (11) can be effectively protected against attack from the contents of the container produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.