| 摘要 |
PROBLEM TO BE SOLVED: To provide a welding and cutting apparatus for a packaging tube material, which achieves rapid sealing and cutting while maintaining a high- quality welded joint. SOLUTION: This apparatus includes a first propelling roller 18 and a second roller 19 cooperating with the first propelling roller 18, and these rollers are reversely driven in synchronism with each other. Each of the rollers 18, 19 is brought into contact with each other in a tangential direction on its circumference. The apparatus has a circular heating platen 30 mounted in the first propelling roller 18, and its diameter is made larger than the diameter of the circumference of the first roller 18. The second roller 19 is provided with a circumferential groove 31 into which the circumferential portion of the heating platen 30 enters. Thus, a high-quality cut joint can be made at high speed. |
