Glossary

Bending Board: This type of paperboard can be scored and bent without breaking its fibers. 

Boxboard: Another term for “paperboard”, i.e., substrates made of different types of paper that are used to make folding cartons. 

Caliper: A measurement term, expressed in thousandths of an inch, to describe the thickness of a board. 

Carton: A container or package made from paperboard that holds products. Note that a carton is not the same thing as a corrugated cardboard box or a shipping box. 

Chipboard: A paperboard made entirely from recycled fibers that isn’t as high quality or robust as other types of paperboard. 

Die: A wood or metal form that cuts or stamps. 

Dust Flaps: A folding carton’s side flaps that remain unglued and unlocked within the box, keeping dust and particles out. 

Film: The plastic that creates a window in a product box. 

Flap: The panel that closes the folding carton. 

Folding Carton: Paperboard that’s cut, folded, laminated, and printed in various styles to package products. 

Grain: The direction of fibers in paperboard, determining how best to design the carton for strength. 

Ink: A fluid with pigments, dyes, and other materials that is pressed into the paperboard.

Kraft: Light brown paperboard made from virgin, unbleached pulp. 

Paperboard: A stiff, strong sheet made from wood and paper fibres pressed together. 

Score: A crease in a carton that folds without breaking the paperboard. 

Solid Bleached Sulfate: A boxboard made from virgin sulfate pulp that’s particularly stiff and strong.

Stock: Paperboard that hasn’t been used to make folding cartons yet.  

Tear Strip: A perforated band that’s die-cut into a carton to help open a filled and sealed package. 

Thumbhole: A semi-circular cut that allows for a folding carton to be opened or emptied. 

Virgin Material: Fibers made from organic materials like wood chips.

Window: A film-covered die-cut opening in a carton that displays the product. 

 

To learn more, contact your folding carton packaging specialist.