The folding carton created in the packaging industry, as it is known today, beginning in late 19th century. Basicaly, a folding carton is made of paper board, and is cutted, folded, laminated and printed for transport to manufacturers. The cartons are shipped flat to a manufacturer, which has its own machinery to fold the carton into its final shape as a container for a product. The folding carton industry has developed into an industry of $50 billion. Typically, cylinder board made from reprocessed scrap paper which is used for most packages. Cartons for food are made from a higher grade and lighter solid sulfate board. Because of the limitations of cutting machinery, the thickness of the board is limited to 0.81mm(0.032″), and folding cartons are generally limited to holding a few pounds or kilograms of materail. Most folding cartons are variations of tube or tray styles.
Tube style cartons
A tube style carton is a sheet of paperboard that is folded over and glued against its edges, forming a sleeve. The open ends of this sleeve can be closed off by dust flaps, reverse or strainght tucks, and locks.
Tray style cartons
A tray style carton has a solid bottom hinged to side and end walls. The side and end walls are joined by a flap, hook, locking tab or lock. An attached lid can also be extended from the side or end wall of some trays. In certain styles, two trays can be used(one slightly large than the other)to form a two-piece telescoping carton.
Set-up cartons are stiff paperboard boxes in three dimensional construction, generally delivered”set up” ready to use, as distinguished from a folding carton or shipping container of corrugated or solid fiber which is delivered in flat form. Set-up cartons do not lend themselves to high-speed manufacture, because they are already”set up”, they use as much storage space when empty as they do when full. Set-up cartons are used to create an upscale image, where the container acts as a storage unit, or where particular rigidity is needed, in all instances price can not be a significant factor. Fancy stationary supplies, gifts, and cosmetics are typical application.
Corrugated boxes are made of corrugated paper board, which is different from the stiff paper known as “cardboard”. Look at the edge of corrugated paperboard, and you will see a row of air columns. The air acts as a cushion, while the paper columns make the material strong. Each box is made to hold something just right, protect it from banging around, and keep it from spilling. Boxes are made with important information printed on them about what’s inside, or how to lift or move them. Carefullly designed inserts hold items in place so the items won’t spill or become damaged.