Fed through sealing apparatus

摘要

The apparatus seals the edges of plastic bags containing sterile goods. The apparatus has a fusing or welding tool arranged in the path through the apparatus for detecting and welding the edge of each bag as it passes through. A printing unit near the end of the path through the apparatus prints the sealed edges. The printing unit is formed of a programmable thermal printing head. This is guided by a thermal transfer color band which moves parallel to and directly above the path through the apparatus. The color band or ribbon is guided by winder spools which are also arranged above the path. The print head is arranged between these spools to cooperate with the ink or color ribbon. A seal edge sensor is arranged in the transfer path (2) before the print head. The edge sensor is in control operative connection with the print head and the ribbon drive.