Blister pack

A blister pack is packaging for a product that molds plastic around the product and is then backed with cardboard or other materials. A blister pack is heat sealed onto the backing and it generally covers the entire product. Some blister packs leave the cardboard or backing unsealed at one corner for easier access to the product.

I recommend: The Answers website has information about blister packs.

Clam shell

Clam shell packaging contains two plastic pieces that are connected together at a hinge to allow the customer to open the package. Clam shells can be formed to fit a product or purchased in stock sizes.

I recommend: FormTex Plastics supplies detailed information about clam shell packaging.

Die cut

Die cut plastic packaging is cut with hot metal dies. This type of packaging is normally made of flat plastic sheets. The dies are used for cutting plastic bags, blister and clam shell packaging.

I recommend: Visit wiseGeek for more information about die cutting.

Cello

Cello, or cellophane, is thin plastic used to make bags and packages. Cellophane is durable and flexible. It is airtight and commonly used to wrap food products. Cello bags are lightweight and are easily heat sealed.

I recommend: Pak-Sel provides more information about cellophane. TextileGlossary.com also has information concerning cello.

High density poly

High density poly, HDPE or high density polyurethane, is a strong, durable poly substance made from petroleum. HDPE is not as transparent as other plastic packaging but it is resistant to hot temperatures.

I recommend: Society of Robots provides details about high density poly. Learn more about the properties of HDPE at Hudson Poly Bag.

Gusset

A gusset is a triangular-shaped fold that extends the width of a bag or material. Gussets are often used in plastic packaging to increase the diameter of the bag.

I recommend: SorbentSystems.com has examples and information about gussets.