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The most frequently used flute corrugation is C flute, with 80% of boards and boxes making up this designation. The alphabetical designations of the flutes don't correspond to the sizes of corrugated boxes, but rather to the order in which the flutes were invented.
12/3/2019 Corrugated flute sizes include: A Flutes: This flute profile has about 33 flutes per foot and is 3/16” in thickness. Its larger size generally provides greater strength and cushioning.
There Four standard flute sizes are in common use, designated A, B, C and E. The sizes were given their letter names in the sequence of their introduction. A is the largest. B, which is smaller was the next size introduced. C came next, but it is between A and B in
Fluting Profiles A Flute: The thickest flute.It's ideal for extra cushioning and shock absorption. Because of the amount of space between flutes, the board surface is less smooth, so it’s not ideal for printing intricate designs. C Flute: The standard flute for RSC boxes, "Regular Slotted Containers," the most common style of corrugated box.
A-Flute, the original flute, is the highest flute size, and therefore, when combined with an inner and outer facing, is the thickest. With 36 flutes to the foot, A-Flute makes the most of corrugated’s cushioning and stacking properties for fragile and delicate items.
The types of corrugated boxes with type E flute are commonly used for packaging consumer goods and perishable food items as well as POP displays. Type F Flute This type of fluting comprises 128 flutes per foot with a height of 1/32”.
14/12/2011 Corrugated flutes come in various standard shapes or flute profiles (A, B, C, E, F, etc.). A-flute was the first to be developed and is the largest common flute profile. B-flute was developed next and is much smaller. C-flute followed and is between A and B in size.
It is made on "flute lamination machines" or "corrugators" and is used for making cardboard boxes. The corrugated medium sheet and the linerboard (s) are made of kraft containerboard, a paperboard material usually over 0.01 inches (0.25 mm) thick.
Sheet size The first dimension when specifying a sheet is always the flute direction (width) and the second the chop (length) eg 1040 x 1550mm the flutes will always run parallel to this dimension. Flute Direction The structural strength of corrugated board