| 摘要 |
A method and device (100) for manufacturing a sandwich structure (10) comprising at least one foam layer (12; 12a, 12b) of a first thermoplastic comprising a chemical blowing agent and two cover layers (20, 22). The decomposition temperature of the chemical blowing agent is higher than the melting point or range of the first thermoplastic. The method comprises a series of steps performed on an advancing starting structure (40) including heating under pressure in order to cause decomposition of the blowing agent, intermediate cooling, foaming at a constant volume and further cooling. |
