| 摘要 |
The disclosure is of a process for moulding cellular polycarbodiimide, characterized in that it consists essentially in heating a panel by radiation and direct contact in a mould-die assembly, in compressing this panel when the foam reaches its softening point, so as to increase its density, in deforming it and rendering the material less friable, more elastic, smooth, calendered and of higher mechanical quality, while retaining its inherent qualities of non-inflammability, and finally in slightly cooling the mould after the moulding, for example by means of an air jet, so as slightly to harden the moulded product before the die is withdrawn and the said product is withdrawn from the mould. |
