Breathable elastic multilayer film laminate and method of making a breathable elastic multilayer film laminate
US7510758B2 · kind B2 · utility
25Cited by
47References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2002 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Mar 7, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31551
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A breathable, elastic, film laminate including layers of an inherently breathable, elastic polymer film alternately stacked with layers of a filled plastic polymer. The laminate may be made by grafting a thermoplastic polymer to an elastomer to form an inherently breathable elastic polymer, extruding, the elastic polymer through a die, extruding the filled plastic polymer through a die, stacking the extruded elastic polymer with the extruded plastic polymer while the polymers are in a melt-extrudable state to create a multilayer film laminate, and stretching the laminate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.