The Face Seal Blister
The Face Seal Blister is the most popular form of blister packaging, and sees the plastic heat-sealed to a cardboard back. The cost-effective nature of face seal blisters makes them ideal for packaging small products produced at a high volume, such as toys.
The Full-Face Seal Blister
The Full-Face Seal Blister operates similarly to the one above, only the blister surrounds the cardboard back. This makes for more robust packaging and a generally nicer aesthetic.
The Full Card Blister
Like the Full-Face Seal Blister, the Full Card Blister surrounds the card. The difference, however, is that the Full Card Blister is attached to the back via flanges rather than being heat-sealed. The blister is folded tightly around the edges of the cardboard, holding it in place.
Clamshell packaging omits the cardboard entirely, and is made with a single sheet of plastic divided into two halves by a hinge, allowing it to be closed shut. These might be designed to be reclosable, as is the case with containers of refrigerated foods, or they might be securely heat-sealed at the edges, requiring a sharp pair of scissors, knives, or trauma shears to open them.