The bottom web to be formed is fed into the machine. A pneumatically grippers pulls the web in cycles. The cycles are controlled by a PLC. Once in the forming station, the web is heated and formed to a blister. During the forming process, the blister is cooled, enabling the web to retain the form which was manufactured to the client's specific requirements. For blisters which require specially strong corners, dies which pre-stretch the web can be installed in the forming station (plug assist unit). The loading zone has a length of 1 meter. The loading is done by hand or for jam also with a filling unit.
After loading the top web is added. A simple sealing onto the bottom web at atmospheric conditions can be extended to a vacuum and seal, or vacuum and thereafter re-gassing with different kinds of gases and then sealed. The remaining oxygen content in the blister is below 1%. Arriving at the cutting station, the packs are divided into the desired quantity. After cutting, the packs fall via a chute out of the machine.
For operating this machine, less than one operator is required (one operator can supervise several machines at the same time).