Method for producing a panel or the like with structural and acoustic properties and panel obtained by said method
US5888610A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 1996 |
| Grant date | Mar 30, 1999 |
| Priority date | — |
| Expiry date | May 31, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24331
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for producing a sandwich-type panel with structural and acoustic properties and formed of a core with an open cellular structure. The method includes the steps of forming first and second skins by superimposing and hot-pressing at least two fabric plies of mineral or synthetic fibers impregnated with a thermoplastic resin, of forming in one of the skins perforations with a diameter of between about 0.5 and 1.5 mm, with a vacuum proportion of empty spaces on the surface of the skin of between about 10 and 25%, of after preparation of the skins applying on one face of the skins an epoxy adhesive coating, of forming a sandwich including the open cellular structure with the two skins on its opposing faces, and then of hot-pressing the sandwich at an appropriate temperature so as to polymerize the adhesive. During hot-pressing the pressure and duration are set so as to avoid any full or partial obstruction of the perforations of the perforated skin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.