Relating to foam filled honeycomb structures
US10279514B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2014 |
| Grant date | May 7, 2019 |
| Priority date | — |
| Expiry date | Jul 15, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2363/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Spherical heat foamable pellets (2) are used for reinforcing honeycomb structures (4). The pellets are preferably of average diameter from 0.5 mm to 0.9 mm and preferably at least 80% of the pellets have a diameter in this range. The pellets can form a free flowing stream which can be poured into the cells (5) of the honeycomb where they can be foamed by heating to form a reinforcing foam which can also bond the honeycomb structure to facing sheets. It is preferred that the pellets are based on a thermosetting resin and contain a curing agent that can cure the foamed resin to produce an integral rigid reinforcing foam within the cells of the honeycomb.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.