Plastic film formation hi - Tosi - ru is done the device

摘要

PURPOSE:To provide a device for sealing of a plastic film of which cyclic time is arbitrarily varied by a method wherein feed time of a plastic film layer and its heat sealing time are kept at selected values. CONSTITUTION:A computer 18 is connected to a plastic film intermittent feed mechanism and movable seal bar driving mechanism, and a feed speed V0 of a plastic film layer 1, feed time T1 of the plastic film layer 1, driving speeds V1, V2 of the movable seal bar driving mechanism, and heat seal time T2 of the plastic film layer 1 are selected with the computer 18. Then, the plastic film intermittent feed mechanism and the movable seal bar driving mechanism are program-controlled, and waiting time T4 is put between the feed time T1 of the plastic film layer 1 and the heat seal time 2 thereof with the computer. Cyclic time T3 of the device can be also varied thereby.