| 摘要 |
PURPOSE: To provide electrolytic liquid with reliable seal ability, by folding endlessly a longitudinal edge of paper tape whose upper side is coated with plastic into the back side, and by welding the folded edge overlapping it on its opposite edge. CONSTITUTION: Normal paper tape 2 from a supply roll and second paper tape 3 are almost simultaneously supplied as endless tapes to the fixed spiral core 1 at an inclined angle. The upper side of the paper tape 3 is recovered with plastic coating 4, and the longitudinal edge 10, 13 of it is endlessly folded in the below direction, and when it is wound, the folded edge 10, 13 overlaps on the opposite edges and the paper tape 3 is welded at the overlapping zone using hot air nozzles 15, 16 through the plastic coating 4. The insulating sleeve welded with plastic is fixed, compressed and cut into short sleeves under pressure of the rotating wrapping belt 17, and is provided with adequate seal ability of electrolytic liquid using a simple wrapping technique. |
