Polyurethane protective film
US11485162B2 · kind B2 · utility
1Cited by
243References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2014 |
| Grant date | Nov 1, 2022 |
| Priority date | — |
| Expiry date | Dec 24, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/28
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A protective film that can be included in multi-layer film laminates for use in marketing, advertising campaigns, particularly outdoor or other environment impacted promotions and safety applications. The film includes at least two different polyurethane polymers and is free or substantially free of polyvinyl chloride based polymer. One polyurethane has an ultimate elongation less than 200%, and another polyurethane has an ultimate elongation more than 400%. The film may be transparent, translucent, clear or have other desirable optical properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.