Great question! Thanks for asking. A blister pack is composed of 2 parts. The first is an adhesive treated paperboard card, the second, a preformed plastic shell called a blister. The two parts are sealed together around the product, trapping it inside the package.
A blister sealer is necessary to perform this operation. Most blister sealers are essentially the same thing: a hot plate that presses down and applies heat and pressure to the blister and card. The differences in the types machinery lie in the number of loading stations, sizes and automation.
The above sealer is the most basic model, a single station push/pull model. The operator loads the sealing tray and then pushed it into the machine for sealing. After the seal occurs, the tray is pulled out, finished product unloaded and is ready to repeat.
