| 摘要 |
In the process and machine of the invention, two strips (A and B) of heat-weldable material are supplied, reciprocally facing one another, in an advancement direction (F). The strips are welded at predetermined welding zones and give rise to cells (4) each having at least one opening (5). A part of the welding zone which surrounds the cell (4) is cut, folded and inserted, together with the cell (4), in a forming cavity (71). A forming fluid is injected into the opening to expand the cell internally of the forming cavity. The invention enables plastic containers to be made which are free of projections in the welding zone and which have a low risk of container leakage through the welding seams on the lateral walls and on the bottom of the container. <IMAGE> |
