| 摘要 |
PROBLEM TO BE SOLVED: To reliably pressure-fit layers to be sealed of opposite plastic sheets for sealing. SOLUTION: The sealer 30 for a package 10 comprises a linear sealer 31 for pressing the layers 11A, 12A to be sealed of the plastic sheets 11, 12 by seal bars 41, 42 which are narrower than a sealing width for applying pressure to the layers while being heated and a plane sealer 32 for pressing the layers 11A, 12A of the plastic sheets 11, 12 by seal bars 51, 52 with a required width for sealing in the sealing width and pressure-fitting the layers to be sealed in a melted state. |
