| 摘要 |
In the production, by fluid pressure deformation of plastic foils, of molds for metal casting of small dental prosthetic parts, and in which a stump model is imbedded in a vessel attachable to a work plate of a foil deforming appliance, an insert, formed with a number of openings, is provided for attachment to the work plate. At least one pot-type vessel, having a supporting edge formed with fine air discharged channels, is inserted into an appropriate opening of the insert and a kneadable composition is placed in the vessel and shaped to extend somewhat conically above the support edge. The unprepared stump model is pressed into the composition and, after any necessary preparation of the stump model, fine channels are notched into the surface of the conically shaped portion of the composition to extend between the base of the stump model and the fine air discharge channels. Thereafter, a plastics foil is deformed into conforming relation with the model either by the application of fluid pressure or by vacuum drawing. |
