Method of making structured hybrid adhesive articles including lightning strike protection sheets
US10625463B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2019 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Feb 1, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J2463/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method is provided for making structured hybrid adhesive articles such as lightning strike protection sheets. In the embodiment for making lightning strike protection sheets, the method comprises the steps of: a) providing an adhesive article comprising: i) a base resin comprising an epoxy resin, ii) a first epoxy curative, and iii) a second epoxy curative; b) reacting the base resin with the first epoxy curative such that the first epoxy curative is substantially reacted with epoxy resin in the article and the second epoxy curative is substantially unreacted in the article; c) embossing the adhesive article with a relief pattern; d) depositing an electrically-conductive layer onto at least a portion of the embossed surface; and e) curing the adhesive article such that the second epoxy curative is substantially reacted with epoxy in the article. In some embodiments, the method additionally comprises a step of embedding a scrim in the adhesive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.