A unit for applying opening devices to a web of packaging material at predetermined areas of the web arranged at a non-zero distance from one another along the web; the unit comprises a feeding group configured for feeding the web along an advancing path; at least one first tool, arranged at a first desired position along the path and configured to apply a first opening device to a corresponding first predetermined area arranged at the first desired position; and at least one second tool, arranged at a second desired position along the path and configured to apply a second opening device to a corresponding second predetermined area arranged at the second desired position; and a buffer portion arranged along the path, downstream of the second tool and upstream of the first tool, and configured to include and/or accumulate a web portion having a number of predetermined areas which is an integer multiple of the number of tools of the unit.

A packaging device for packaging discrete medicaments in pouches that is configured to form and fill the pouches in an elongated web to contain the medicaments comprises a web drive for guiding the elongated web in a transport direction along a web trajectory, wherein the packaging device further comprises a sealing station along the web trajectory, wherein the sealing station is configured to apply a seal to the elongated web to form at least a part of a pouch.

The printer is a printer for printing on a label continuous body including a plurality of labels temporarily attached to a belt-like liner at predetermined intervals, the printer calculates the label pitch from the downstream end portion of a first label and the upstream end portion of the first label detected by a second detecting unit that detects an end portion of the label, if the calculated label pitch is smaller than a distance from a first detecting unit for identifying a printing start position of the label to a printing unit, the printer feeds the label continuous body to a printing start position of a second label based on the calculated label pitch.

A packaging device for packaging discrete medicaments in pouches that is configured to form and fill the pouches in an elongated web to contain the medicaments comprises a web drive for guiding the elongated web in a transport direction along a web trajectory, wherein the packaging device further comprises a sealing station along the web trajectory, wherein the sealing station is configured to apply a seal to the elongated web to form at least a part of a pouch.