Slide blister packaging is designed with flanges that wrap around three sides of an insert card. The card can slide into the blister tray, securing the card. The primary benefit of the blister tray that it can be assembled without the use of any sealing equipment.  In fact, it is often secured with a staple or tape. The blister tray is especially useful for lightweight and flat items, but design engineers are ready to work with your requirements to produce a functional, attractive and secure package option.