Side sealing mechanism for a packaging machine

Details Side sealing mechanism for a packaging machine Side sealing mechanism for a packaging machine

B - Operations, Transporting

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B31C 1/00 (2006.01) B29C 65/18 (2006.01) B31B 1/74 (2006.01) B31B 23/00 (2006.01) B31C 3/00 (2006.01)

Patent

CA 1152371

Abstract of the Disclosure Heat sealing bars are spaced circumferentially around a rotatable drum and seal together two face-to-face strips of material as the strips are drawn continuously around the drum. The sealing bars are automatically moved radially inwardly and outwardly to change the circumferential distance between the bars and the effective diameter of the drum and thereby keep the bars in register with printed material on the strips.

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