Blister packaging is a term for several types of pre-formed plastic packaging used for small consumer goods, foods, and for pharmaceuticals. The primary component of a blister pack is a cavity or pocket made from a formable web, usually a thermoformed plastic. This usually has a backing of paperboard or a lidding seal of aluminum foil or plastic. A blister that folds onto itself is often called a clamshell. There are several different varieties of blister packaging, but all function on the same premise. The product is encased in a cavity of hard plastic and sealed shut, usually via an assembly line heating process. Blister packs can be very small or very large, depending on the product in question, and their uses are seemingly endless. One of the most prevalent forms of blister packaging, and also the most user-friendly, is found in single-dose strips of both over-the-counter (OTC) and prescription pharmaceuticals. More and more suppliers tend to choose blister pack because it has many following benefits.
Blister packaging allows a product to be highly visible, leading to more point of purchase sales, and also lessens packaging costs.
Blister packaging reduces store losses from shoplifting. It prevents small items, often consumer electronics, from being opened and slipped into a pocket by those who seek to cheat stores via a “five finger discount.” For both retailers and manufacturers, any method that reduces theft is a boon to bottom-line profits.
Many manufacturers use blister packaging equipment to protect their products from thieves, to allow consumers to see the product and to separate the product from itself, as with pills that come in blister packs.
Based on regulations in much of the world, all blister packaging must be light-, oxygen- and moisture-resistant to ensure the product inside is safe and the consumer does not get sick if the product is ingested. Some products, especially unstable medications, may require resistance that goes beyond regulations. If this is true, then the manufacturer should choose a blister pack that meets these higher standards, so the consumer can use it properly.
Usually, the materials used to create blister packaging can be divided into two categories: cold-formable material and thermoformable material. Cold-formable material is commonly pressed aluminum that is laminated with plastic. The aluminum is resistant to many outside forces and has high mechanical resistance; aluminum has a tendency to leech into other materials and to crack, but the plastic inclusion corrects these issues. Thermoformable materials are plastics that can be easily molded into any shape, but they are not as resistant to outside forces — especially light — because the plastic is transparent. KOS machinery is specialized in packaging machines for many years; we have blister packaging, vacuum packaging, hardware fitting packing machine and other related packaging machines. Find us on www.kosbestpacking.com.