Folding Box Printing (E-Flute Corrugated Board)

Description:

E-flute corrugated board, laminated with greyback paperboard. 4c printing plus glossy lamination. One-piece flattened design during delivery.

Regular flute types are “A”, “B”, “C”, “E” and “F”. The letter designation relates to the order that the flutes were invented. Flute size refers to the number of flutes per lineal foot, although the actual flute dimensions for different corrugators manufacturers may vary slightly. Measuring the number of flutes is a reliable method of identifying flute size than measuring board thickness. The most common flute size in corrugated boxes is “C” flute, “E” flute and “F” flute.

Flute Designation	Flutes per linear foot	Flute thickness (in)	Flutes per linear meter	Flute thickness (mm)
A flute	33 +/− 3	3/16	108 +/− 10	4.8
B flute	47 +/− 3	1/8	154 +/− 10	3.2
C flute	39 +/− 3	5/32	128 +/− 10	4.0
E flute	90 +/− 4	1/16	295 +/− 13	1.6
F flute	128 +/− 4	1/32	420 +/− 13	0.8

Corrugated fiberboard can be specified by its construction (single face, single-wall, double-wall), flute size, burst strength, edge crush strength, flat crush, basis weight, surface treatments and coatings. TAPPI and ASTM test methods are standardized. The choice of corrugated medium can be varied to engineer a corrugated board with specific properties to match a wide variety of potential uses. Double and triple-wall corrugated board is also produced for high stacking strength and puncture resistance.