Film comprising a strippable sacrificial layer for reduction of surface defects in a substrate
US11028291B2 · kind B2 · utility
0Cited by
28References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2018 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | Apr 19, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31797
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A coextruded biaxially oriented composite film comprising a polyester substrate layer and disposed on one or both surfaces thereof a strippable sacrificial layer, wherein said strippable sacrificial layer comprises an ethylene-methacrylic acid (EMAA) copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.