Method of forming noise-damping composite with externally galvanized surfaces and composite formed thereby
US5418073A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1993 |
| Grant date | May 23, 1995 |
| Priority date | — |
| Expiry date | Oct 25, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12569
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A noise-damping composite is formed by providing a sandwich of a viscoelastic layer between two metal skins, the viscoelastic layer including electrically conductive particles distributed therein. The sandwich is passed through a series of cells of an electro-galvanizing line, in each cell the sandwich passing through the nip formed between a charged electrically conductive contact roller and an electrically insulating pressure roller for applying sufficient pressure to insure conductivity from the metal skin engaging the contact roller through the viscoelastic layer to the other metal skin, so that the galvanizing metal is plated on only the outer surfaces of the two metal skins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.