| 摘要 |
An improved process for making plastisol foams is disclosed, the improvement comprising adding to the plastisol composition, prior to foaming, a material which is compatible with the plastisol and which cures at about room temperature, then foaming the resulting mixture, then curing the material added at about room temperature, and finally fusing the plastisol foam. Optionally, the foam can be shaped before or after the material is cured, but prior to fusing the plastisol composition. A separable aspect of the invention is the application of a vacuum after the composition has been foamed and prior to curing of the material, and optionally releasing the vacuum after the material has cured but prior to fusing the plastisol foam whereby a low density foam is obtained. |
