The Working Principle of an Automatic Blister Packing Machine

Automatic blister packing machines are crucial in industries like pharmaceuticals, food, and consumer goods. They package products in blisters, safeguarding, displaying, and simplifying access for end - users. Knowing their working principles helps manufacturers optimize production and ensure top - notch packaging.

1. Blister Formation
The process starts with blister creation. A roll of thermoplastic, such as PVC or PET, is fed into the machine and pre - heated by infrared heaters. Once softened, the plastic film is drawn into a mold with cavities by a vacuum system. This forms uniform blister pockets for product placement.
2. Product Filling
After blister formation, products are filled. In the pharmaceutical industry, pills, capsules, or tablets are accurately placed in the blisters. Small, uniform products are often filled volumetrically, sometimes with a vibrating feeder for consistent flow. Larger or irregular products are handled by a pick - and - place system.
3. Sealant Film Application and Heat Sealing
Once filled, a sealant film, usually aluminum foil or heat - sealable plastic, is applied. The combined material then passes through a heat - sealing station. Heat and pressure bond the film to the blisters, with settings adjusted according to the materials used.
4. Blister Pack Trimming and Separation
Post - heat - sealing, the blisters are in a continuous sheet. A die - cutting mechanism trims the excess material and separates individual blister packs, which are then ready for further processing.
5. Quality Control and Monitoring
Throughout, quality control systems with sensors are used to detect issues like missing products or poor seals. Faulty blister packs can be rejected or the production halted for inspection.

In summary, the automatic blister packing machine's operation involves multiple coordinated steps. Understanding these helps manufacturers choose the right equipment, boost efficiency, and ensure high - quality packaging, which benefits product protection, presentation, and customer satisfaction.