E-B flute corrugated cardboard is a duplex 5-layer double-walled corrugated cardboard that is a popular material for shipping and storage. This cardboard comprises two E-flutes and a B-flute arranged in a five-layer double-walled structure. The E-flute and B-flute combine to give the material excellent properties such as high strength-to-weight ratio, better puncture resistance, and improved cushioning performance.
An e-flute is a flute with a thickness of about 1/16th of an inch. It is a thinner and finer flute than its counterparts, which makes it less spongy and more sturdy. However, E-flute's slimmer profile also makes it less capable of providing ample cushioning for fragile items.
On the other hand, the B-flute has a thickness of about 1/8th of an inch, which makes it a thicker and more substantial flute. It has a better cushioning performance than E-flute but is also less resistant to punctures.
By combining E-flute and B-flute, duplex 5-layer double-walled corrugated cardboard overcomes the drawbacks of both types of flutes. The resulting material is more durable and solid, offering excellent cushioning, puncture resistance, burst strength, and bending resistance.
Overall, this makes it the perfect material for shipping and storage purposes. It can withstand rough handling and harsh environmental conditions, ensuring that items remain safe and undamaged during transit.