Method for fabricating thermoplastic sandwich structural panel using thermoforming and compression molding
US10828822B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2018 |
| Grant date | Nov 10, 2020 |
| Priority date | — |
| Expiry date | Nov 12, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29L2031/722
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for making a structural sandwich panel includes the steps of positioning a first and second thermoplastic skin elements in overlying relationship with respect to a heated male and heated female die molds respectively. A first pressure reduction is applied between the first thermoplastic skin element and the heated male die mold and a second pressure reduction is applied between the second thermoplastic and the heated female die mold. A core panel element is positioned between the heated male die mold and the heated female die mold wherein the core panel element has a first adhesive on a first side and has a second adhesive on a second opposing side. The male and female die molds are closed and exert a pressure onto the core panel element to secure the first and second thermoplastic skin elements to the core panel element and form the core panel element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.