Corrugated Board Waveform Analysis

Corrugated waveforms are generally classified into U-shaped, V-shaped, and UV-shaped. The dome of the U-shaped dome is round, the dome of the V-shaped dome is similar to the top of the triangle, and the dome of the Uv dome is between the two.

v type: also known as the triangle. Corrugated peaks and troughs have small radii, and the peaks and troughs are connected in a straight line. The peak contact surface is small, and the adhesive and base paper are saved. However, the bonding strength is low. Due to the combined action of the two oblique lines, the plane compressive strength is greater. , exceeding its tolerance limit, its corrugated will be quickly destroyed. Pressure can not be restored after the original state, poor buffering performance, low elasticity

U-type: also known as arc-shaped. The ratio is balanced, peaks and valleys are connected, the peak contact surface is large, the area of ​​the glue is large, the bonding is firm, and the adhesive strength is large. Because the force point of the arc is unstable, the plane compressive strength is lower than that of the v-type cardboard. , But its stretch, buffering performance is good, when the pressure is eliminated, the corrugated can basically restore the original shape, the elasticity is better

UV type: It is made by combining the advantages of V type and U type. It not only maintains the adhesive strength of U type helium, but also has high plane compressive strength of V type helium. It has higher endurance and elasticity. Therefore, Widely used UV type corrugated corrugated board

Customers do not generally require waveform comparison, but under appropriate conditions, in order to ensure and improve the strength of corrugated board, increase the hardness and impact resistance, to meet the elasticity and printing needs, you can choose B for V-shaped, C or A for UV or U-shaped combination

The first type of corrugated shape was invented as Type A corrugated, the second type was B invented, and later C and T were invented between A and B models. After that, the plant E was invented and then appeared again. In recent years, the larger D楞, K楞, people have developed micro-corrugated, decayed F, G, N, O and other types.

The most commonly used corrugated types are A, B, C, E, and K. The most commonly used corrugated cartons at home and abroad are A, B, and C.

Type A: Corrugated board has good cushioning and full elasticity, but the impact resistance and stiffness are slightly inferior.

lB type: It is smooth on the surface of the cardboard, and it has high compressive strength in the plane. It can withstand high printing pressure when printing on the surface, and it can get a good printing effect.

Type C: C is more widely used in the United States than in the United States. It is between Type A and Type B. This type of production and use is to combine the advantages of Type A and Type B and to overcome both. The disadvantages; its buffering performance and side pressure strength are similar to Type A. The anti-flat compressive strength is close to the type B.

The characteristics of these three kinds of 楞楞 type are: the order of plane pressure, parallel pressure and surface smoothness are B, C, A, and the vertical pressure and buffering performance are A, C, B in order.

- A single or corrugated paperboard adopts either A or C. A dual-composite paperboard requires a reasonable combination of two types of paperboards. The best combination usually uses AB or BC combinations. In this regard, it is emphasized that from a comprehensive point of view, AB double corrugated cardboard or BC double corrugated cardboard can be used to evaluate, because AB double than corrugated board than BC double pill corrugated board is about 1mm thicker than corrugated board thickness, many customers think AB double corrugated The idea that paperboard has advantages over BC double corrugated paperboard is a misunderstanding. There is a need for corrugated box companies to properly guide customers (Li Yutian)