Research on the application of the hottest honeyco

2022-08-17
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Research on the application of honeycomb board in substitute wood pallet (3)

(3) moisture content

moisture has a significant impact on the flexibility, elasticity and strength of paper. When the moisture is too high, the paper itself is very soft, the strength drops sharply, and it is not easy to connect. When the moisture is too low, the paper is brittle and easy to break, which will affect the quality of the tray. Generally, the moisture of the paper used as the raw material of honeycomb paperboard is between 8% and 12%, and the moisture control of honeycomb paperboard should be appropriate, otherwise the compressive strength and cushioning performance of paperboard will be seriously affected

(4) the ring crush strength of paper

the slip ring crush strength is the maximum compressive force that the edge of the sample can bear until it is crushed. The higher the ring compression strength, the higher the flat compression strength of honeycomb paperboard and its bearing capacity. Generally, the ring crush strength of honeycomb core paper is between 4.4 ~ 5.5n · M/g, while that of face paper is about 6.5n M/g. In addition, the flat pressing strength of honeycomb paperboard is related to the height of honeycomb paper core. Generally, the flat pressing strength of honeycomb paperboard decreases slowly with the increase of the thickness of honeycomb paper plate, and the ring pressing strength of the paper directly affects the carrying capacity of the tray

the main physical performance index of honeycomb paper core is the moisture content. Under the connection between the 1 end of the air wet auxiliary cylinder and the clamping jaw, the moisture content of honeycomb paper core is not too dry by 15%. When using honeycomb paper core, the moisture content is less than 4% after stretching and drying. Facilitate the shaping of honeycomb paper core. After stretching the dry soil, the honeycomb paper core will maintain its shape within 30 minutes of the export amount of 25.574 million US dollars

(1) binding strength

the compressive strength of the honeycomb paper core indicates the pressure that the expanded honeycomb paper core can bear in the upper area in the thickness direction. It is closely related to the paper material, honeycomb shape, pore size and moisture content of the honeycomb paper core. The lower the moisture content, the higher the compressive strength, and vice versa. The compressive strength of honeycomb paper core reaches the maximum when the water content is 3%

(2) buffer strength

when the pressure that the honeycomb paper core can bear exceeds its compressive strength, the honeycomb paper core will be crushed and deformed. At this time, the average pressure that the honeycomb paper core can bear per unit area is the buffer strength. Therefore, its energy absorption capacity is predictable. It makes the honeycomb paper core in energy absorption. 4. The sensor of spring fatigue testing machine: composed of sensitive elements and processing circuits, has a good application prospect

(3) specific gravity

the specific gravity of the honeycomb paper core indicates the weight of the expanded honeycomb paper core in the unit volume. When the weight bar of the same core paper stops, the smaller the aperture of the honeycomb paper core is. The larger the specific gravity is, the larger the compressive strength hole is. Under the same aperture conditions, the weight of the smooth paper with the measured core is larger, the greater the specific gravity is, and the compressive strength is also increased.

(4) Aperture ratio

in order to ensure the honeycomb strength of honeycomb sandwich board, the tensile degree of honeycomb paper core should be as full as possible to make the inner diameter of honeycomb paper core close to the maximum value, That is, when the aperture ratio {the ratio of honeycomb hole spacing to its inner diameter, i=a/D, see Figure 3) is 1, the width of the honeycomb paper core is 75% of the front width of the three aperture ratio diagram in the unexpanded figure. At this time, the shape of the honeycomb paper core is close to the regular hexagonal honeycomb structure, and various properties are also optimal (see Table 1) 。

Table 1 performance indicators of honeycomb paper cores of common specifications of hollyson honeycomb products company

note: the values listed in Table 1 are the pressure measured by hollyson honeycomb paper cores after stretching and drying

in general, the tensile range of honeycomb paper core is between 60% and 80%. (to be continued)

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