Method of making a uniaxially oriented label film with compatibilizer
US5451283A · kind A · utility
21Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1993 |
| Grant date | Sep 19, 1995 |
| Priority date | — |
| Expiry date | Jul 16, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Physical properties of extruded, uniaxially oriented films useful in label manufacture and formed from blends of olefinic base materials and soft polar additives such as ethylene vinyl acetate (EVA) are changed in a directionally selective manner that improves abrasion resistance while preserving conformability by use of compatibilizers or coupling agents in the blends. Machine direction strength properties, including stiffness and tensile modulus, increase with little or no degradation of cross-direction elongation, and with limited degradation of cross-direction tensile modulus, both required for good label conformability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.