Last year, MULTIVAC Marking & Inspection launched the first DP 230 model, which was designed for integration into R 08x and R 1xx thermoforming packaging machines, as part of a new generation of direct web printers. From the 4th quarter of 2018 onwards, the new models of direct web printers will also be available for the R 2xx and R 5xx thermoforming packaging machines.
When the new generation of direct web printers was developed, there was a particular focus on meeting the latest hygiene and safety standards. As with the machines of the previous generation, the new direct web printers are based on a stainless steel and anodised aluminium construction. All exposed edges are chamfered and dead space has been systematically avoided. This means liquid can easily drain away during cleaning.
The innovations include hygienic cylinders with stainless steel connections on the film brake, as well as hybrid cables for all connections to the packaging machine. The cover plates are specially designed for use in the food sector and are perforated for ease of cleaning. Since security against loss of product has a high priority in the medical and pharmaceutical sectors, the DP 230 direct web printers for these industries are supplied with solid cover plates and plexiglass windows.
MULTIVAC currently differentiates between two models: the DP 210 is equipped with an x-axis propulsion indexer, which enables the printer to move at right angles to the film running direction, allowing for multiple packs in a pack row to be printed. The DP 230, on the other hand, is equipped with an x-axis and y-axis propulsion indexer. This means the printer can move not only at right angles to the film running direction but also in the film running direction itself, enabling all the packs of a multi-row format to be printed. Thermal transfer and thermal inkjet printers are used as the printing technology.
The models are available in each version for cut-off lengths up to 400 mm and 900 mm. This means the direct web printers are ideally designed for each film width and for all the available formats on the thermoforming packaging machine. State-of-the-art servo motors ensure maximum speed and printing accuracy are achieved.
The compact design and user-friendliness of both series also offer significant benefits. Since the direct web printers are fitted above the sealing station before the control cabinet, the loading area remains completely free. In the case of the larger thermoforming packaging machines (from the R 1xx series onwards), both the DP 210 and DP 230 can be equipped as an option with a mobile holding device, allowing them to be easily pushed to the side when changing the sealing die. This means the sealing station is then easily accessible. When the machine is to be put back into operation, the direct web printer is simply pushed over the safety guard again, and the loading area is once more completely free.
To ensure the direct web printer has a high degree of user-friendliness, MULTIVAC has equipped the printer mounting with a quick-changing device, so it can be dismantled easily when changing the thermal printhead, for example. All removable covers are provided with ergonomically arranged handles, which enable the covers to be handled easily from the operating side.