DEVICE FOR SEALING PACKING MATERIAL COATED WITH THERMOPLASTICS

摘要

PURPOSE: To design an inductor so as to achieve sealing of wrapping material at an extremely narrow surface without causing a large loss in electric current or problems on cooling the inductor. CONSTITUTION: For the purpose of induction sealing of precut wrapping material with confined seal region, construction is devised in such a manner that an inductor 1 has two conductors 3 and 4 with equivalent widths in the first plane 6 while the conductor 4 has a fairly broader width than the conductor 3 in the second plane 7 normal to the first plane 6.