Reaching speeds up to 350 packages/min, the Sigpack HML offers reliable sealing in a compact footprint.

Hermetic packages protect pharmaceutical products from external influences like humidity, oxygen and light. Sigpack HML, the new horizontal flow wrapping machine from Bosch Packaging Technology, allows products such as blow-fill-seal vial cards, blisters and various medical technology products including pens and inhalers to be reliably hermetically packaged.

Sigpack HML’s compact size means it can fit into facilities even where space is limited. It can be integrated into lines or used as a standalone system for added flexibility.

Sigpack HML is suitable for the production of both small and large batches. Depending on the desired output volume, the film reels can either be changed manually during short machine stops or with the help of a splicer. The splicer fully automatically connects the old and new film to avoid disturbances, such as at the film former.

Products are delivered to the flow wrapping machine via a transport chain. The transverse and longitudinal film sealing uses the proven Longdwell heat sealing technology. An extra-long sealing time results in tightly sealed seams, which are key in protection of pharmaceutical products. The machine achieves an output of up to 350 sealed packages/min.

The sealing rolls used for horizontal wrapping can be opened from both sides. This prevents the film from coming into contact with the heated sealing rolls, and from being damaged during machine downtime. For particularly temperature- sensitive products, the cover plates at the sealing station can be cooled. The Sigpack HML is also available with ultrasonic sealing, allowing customers to gently package heat-sensitive products.

Options for more robust protection

Upon request, the Sigpack HML can be equipped with options for additional product protection, such as the “no gap no seal” function. This is especially used for product piles in blister or BFS packages, which are checked once again shortly before they reach the cross-sealing. If the pile is not in the correct position, the cross-sealing stops, which helps to avoid product rejection or damaged sealing jaws. The optional MAP module (Modified Atmosphere Packaging) offers optimal product stability by removing residual oxygen from the hermetic packages. Sensors monitor and regulate the gas content of the packages.

Based on the Bosch systems competence, the Sigpack HML can be combined with other equipment, like cartoning machines as well as track and trace systems for seamless traceability of the packaged products.