Mirror surface decorative sheet having crack elongation and specified surface roughness, and mirror surface decorative plate using same
US10481300B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2015 |
| Grant date | Nov 19, 2019 |
| Priority date | — |
| Expiry date | Oct 23, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B5/0808
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention provides a mirror surface decorative sheet having excellent specularity, excellent surface properties, and excellent processability in which neither springback nor cracking occurs during the processing steps, and a mirror surface decorative plate using this mirror surface decorative sheet. The present invention relates to a mirror surface decorative sheet comprising at least a base sheet and a surface-protecting layer, and having a crack elongation as measured by a predetermined method of 10 to 20%, the base sheet being formed of a polypropylene resin, the base sheet having a thickness of 150 to 500 μm, and the base sheet having a ten-point mean roughness (Rzjis) of a surface as measured according to JIS B 0601: 2001 of 5 μm or less, the surface-protecting layer being a cured product of an ionizing radiation-curable resin composition, the surface-protecting layer having a thickness of 7 to 17 μm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.