Foamed sheet
US10105929B2 · kind B2 · utility
1Cited by
0References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2014 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Mar 10, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/0266
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A foamed sheet according to the present invention has a thickness of 30 to 500 μm and includes a foam. The foam has a density of 0.2 to 0.7 g/cm3, an average cell diameter of 10 to 150 μm, and a peak top of loss tangent (tan δ) occurring in a temperature range of from −30° C. to 30° C., where the loss tangent is defined as the ratio of a loss modulus to a storage modulus determined at an angular frequency of 1 rad/s in dynamic viscoelastic measurement of the foam. The foam preferably has a maximum of the loss tangent (tan δ) in the temperature range of from −30° C. to 30° C. of 0.2 or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.