| 摘要 |
1. A fabrication process for articles of synthetic material, produced by thermo-forming and connected to one another by attachment lugs (6), that can easily be broken apart and that are separated from one another by cuts obtained without removal of material, inside a mould that consists of a fixed portion (8) and a movable portion (16) that can be displaced relatively to the fixed portion between an open position and a closed position of the mould, this process consisting in the provision, in the fixed portion and at each place where a cut is to be made, of a slot (10) bounded by two sides aligned with the direction of displacement of the movable portion, whilst for the production of each cut the movable portion is equipped with a blade (18) the cutting portion of which is bevelled, the forming of the sheet taking place after the material has been thinned and before it is cut in the areas where cuts are to be made, characterized in that it consists in arranging the blade in such a way that its cutting edge is situated close to the rim of one side of the corresponding slot (10) in the fixed portion, the slot (10) opening out into a groove (9) of width greater than that of the slot, this process also consisting in obtaining before cutting, and with the help of the cutting blade (18), a thinning of the sheet of material intended to form the article, a counter-pressure being produced during this thinning on the face of the sheet opposite to that on the side of which the cutting blade is situated. |
