Multi-layer self-tack wrapping film
US6117553A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1997 |
| Grant date | Sep 12, 2000 |
| Priority date | — |
| Expiry date | Nov 4, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31913
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
There is provided a self-tack wrapping film comprising a non-oriented multi-layer film of a chlorine-free resin, which is regulated in (a) tensile breaking elongation at a longitudinal direction, (b) ratio of a tensile breaking elongation at a transverse direction to the tensile breaking elongation at a longitudinal direction, (c) tensile breaking load at a longitudinal direction (LLD), (d) ratio of the tensile breaking load at a longitudinal direction to a tensile breaking load at a transverse direction, (e) tensile modulus at a longitudinal direction and that at a transverse direction, (f) tackiness, (g) heat resistant temperature and (h) respective thermal shrinkage percents at longitudinal and transverse directions, to a predetermined range, which wrapping film has improved tackiness, heat resistance, microwave oven suitability and "saw blade" cutting characteristics, and appropriate flexibility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.