Sheet-form layered structure with attractive appearance and utilization thereof
US6808804B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2002 |
| Grant date | Oct 26, 2004 |
| Priority date | — |
| Expiry date | Sep 4, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31507
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A highly elaborately designed sheet-shaped laminated structure wherein: (1) the sheet-shaped laminated structure is a sheet-shaped laminated structure composed of at least two layers formed of a thermoplastic resin, (2) at least one outer layer forming a surface of said laminated structure is a layer (B) formed of a transparent resin, (3) at least one layer composing said laminated structure contains a dye, a pigment or a light-diffusing agent and has a monotonous thickness change at least in one direction of a sheet surface of the laminated structure, and (4) said laminated structure shows a continuous change in color tone along the sheet surface when visually observed toward an outer surface of the layer (B) formed of a transparent resin, and use thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.