Blister packaging, also known as blister packs, is a type of pre-formed packaging material that consists of a thermoformed plastic cavity and a pliable lid. The product is placed in deep-drawn pockets or cavities resembling blisters in this type of packaging. A backing material or lidding is affixed to the flat area of the plastic cavity that encloses the product inside. A heat-seal coating adhesive is used to join the two structures. Depending on the application, there are various types of blister packaging. Blister packs are most commonly used to package pharmaceutical products such as pills, tablets, capsules, and lozenges. They are also used for packaging consumer goods such as foods, electronics, toys, and tools due to their low cost, cheap raw materials, and high operating speed.
According To Coherent Market Insights " The global blister packaging market was pegged at around 2,350 kilo tons, in 2018 and is expected to exhibit a CAGR of 4.2% over the forecast period (2019-2027), to surpass 3,400 kilo tons by 2027. "
Blister packs are useful for storing products for extended periods of time while protecting them from external factors such as humidity and contamination. Light-sensitive products are also shielded from UV rays by opaque blisters. Blister packaging consists of four major components. The forming film, lidding, heat-seal coating, and prints are examples of these. The main structural components that account for nearly the entire weight of the packaging are the forming film and lidding. The heat seal layer binds the two structures together. Finally, printing is used to add labels, batch numbers, codes, and other important information.
Blister packs are commonly used to package items such as toys, hardware, medication, and so on. Many blister packaging machines form the cavity or pocket from a roll or sheet of plastic using heat and pressure applied through a die. Improvements in cold forming, specifically allowing steeper depth/angles during forming, which minimises the amount of material used for each cavity, have aided the growth of this technology in recent years. The main advantages of a plastic-based blister pack are its smaller size when compared to cold formed aluminium and its transparency, which allows you to see the product.
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