A blister packing machine can create pre-formed packages using thermoforming or cold forming methods, typically using PVC. Thermoforming involves heating PVC sheets and using pressure to mold them, while cold forming uses laminated film with aluminum and a stamp to create packaging. Blister machines can create different types of packaging, including pharmaceutical blister packs and clamshell cases for consumer goods.
A blister packing machine is a piece of equipment capable of creating pre-formed packages that can be used to seal items such as food, medicines and various consumer products. There are two main methods a blister machine can use to achieve this: thermoforming and cold forming. Some machines are only capable of using one of these methods, while others are multipurpose devices. Most blister machines use polyvinyl chloride (PVC) to form the packaging, although other materials can also be used. Blister machines are also capable of creating slightly different types of packaging, such as pharmaceutical blister packs with push-through backs and clamshell cases used to hold consumer goods.
There are two main ways that a blister machine can form sheets of material in the package. Thermoforming is a technique that involves heating PVC sheets before placing them in a blister machine. This is typically accomplished by passing the sheets between the top and bottom heating plates. When a sheet enters a thermoforming blister machine, it is soft and pliable and can be forced into the shape of a mold through the application of pressure. In some cases, a mechanical die will be used in addition to applying pressure, particularly when the shape of the die is difficult or complex.
The type of packaging created by thermoforming can be used in many different applications. Some blister machines using this technique are designed to create pharmaceutical blister packs. This type of packaging typically contains separate blister packs for each pill and has a push-through foil or card on the back.
Other blister machines are designed to create the type of clamshell packaging often used to contain consumer goods. These machines typically press each side of the shell individually, after which it can be heat sealed. A thermoforming blister machine can also create single-sided blisters which are then attached to card stock.
Cold forming is a technique that does not involve any application of heat. Unlike the thermoforming method which uses clear PVC, this technique uses thin sheets of laminated film that contain aluminum. To create packaging from these sheets, a blister machine typically uses a stamp to force it into a shape. Aluminum based foil will tend to stretch and hold its shape after the stamp is removed. This type of blister is typically used to contain pharmaceutical products, as the aluminum-based film tends to block moisture from entering the package.
Protect your devices with Threat Protection by NordVPN
