Easy-opening flexible packaging laminates and packaging materials made therefrom
US5874155A · kind A · utility
60Cited by
11References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1996 |
| Grant date | Feb 23, 1999 |
| Priority date | — |
| Expiry date | Jan 25, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/3192
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A polymeric laminate for use in polymeric films, and packaging material and packages made therefrom, that is roughened or knurled to produce a series of nicks or cuts over substantially the entire surface area of the laminate, producing an easy-opening feature. The laminate may be a multilayer, polymeric structure that may comprise an oriented polypropylene, polyethylene terephthalate, or a biaxially oriented nylon. The packaging material of the invention may contain a sealant film, either a single layer or multilayer film, and may also comprise an intermediate layer of foil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.