| 摘要 |
In order, during the production of upholstery, especially of seat cushions for motor-vehicle seats, from multiple-zone foam, to obtain a pronounced interface between these zones, the position and extent of zones of differing hardness being sufficiently reproducible, the second reaction mixture is placed in the mould cavity, next to the reaction mixture already introduced, at a time when the first reaction mixture has already experienced such a decrease of density and increase of viscosity that the second reaction mixture can flow free of turbulence under the first reaction mixture from the side. <IMAGE> |
