Corrugated Carton Processes

Box Structure:

Corrugated fiberboard, or combined board, has two main components: the linerboard and the medium. Both are made of a special kind of heavy paper called containerboard. Linerboard is the flat facing that adheres to the medium. The medium is the wavy, fluted paper in between the liners. 

The following illustrations demonstrate four types of combined board.


Single Face: 

One medium is glued to one flat
sheet of linerboard. 


Single Wall:
The medium is between two sheets of
linerboard. Also known as Double Face. 

 

Double Wall:
Three sheets of linerboard with two
mediums in between. 

Triple Wall:
Four sheets of linerboard with three
mediums in between. 





Box Dimensions

Dimensions are given in the sequence of length, width and depth. Internationally, the words length, breadth and height may be used to express these dimensions. The dimensions of a box are described based on the opening of an assembled box, which can be located on the top or the side, depending on how it is to be filled. The opening of a box is a rectangle; that is, it has two sets of

parallel sides. The longer of the two sides is considered its length, the shorter of the two sides is considered its width. Theside perpendicular to length and width is considered the depth of the box 

Dimensions can be specified for either the inside or the outside of the box. Accurate inside dimensions must be determined to ensure the proper fit for the product being shipped or stored. At the same time, palletizing and distributing the boxes depends on the outside dimensions. The box manufacturer should be informed as to which dimension is most important to the customer.