| 摘要 |
A process for the application of twin layer bottoms on the pots, wherein the filling material of the hollow space is located on the bottom of the pot and kept at a certain distance from its profile, being a covering layer located above it, by operating them according to the Italian Pat. No. 965,732. The process is characterized in that the height of the filling material is at least 20% higher than the average thickness that the same material has at the end, and in that in the first phase of the deformation of this material a pressure is gradually applied from the center to the periphery, and in the second phase wherein the covering layer is kept in a mould and the filling material fills all the hollow space, said impact acts on said filling material in all the directions. |
