| abstract |
THE SUBJECT OF THE INVENTION IS A PROCESS FOR MANUFACTURING RIGID AND HOLLOW PARTS WITH OR NOT PRESENT AGAINST SCRAPS, IN WHICH A CORE BOX 10 CONSTITUTES SAND MIXED WITH ORGANIC OR MINERAL RESIN BINDERS, IS INSULATED. EXTERNAL LAYER OF CORE 10 BY A VARNISH OR THERMOPLASTIC LAYER, CORE 10 IS DRYED, A RELEASING AGENT IS DEPOSITED ON CORE 10, CORE 10 IS PUT INTO A MOLD IN WHICH AN AGENT HAS BEEN DEPOSITED PREVIOUSLY OF DISMOLDING, THE MATERIAL SERVING TO CONSTITUTE THE PART 17 IS INJECTED IN THIS MOLD, THE UNMOLDING OF THE PART 17 IS CARRIED OUT, THE PENING OF THE SAID PART 17 IS CARRIED OUT, THEN THE SAND OF THE CORE IS RECOVERED AND REGENERATED. |