The research and development technology of China's honeycomb paperboard began in the late 1980s. After many years of research, development, and continuous improvement and improvement, China's honeycomb paperboard technology has made a breakthrough. At present, domestic honeycomb paperboard technology and equipment have improved greatly in terms of equipment processing precision, honeycomb paper molding strength, range of adaptability, or in reducing energy consumption and reducing production costs.
First, the main features of honeycomb paperboard
Honeycomb paperboard is a new sandwich structure made of high-strength cellular paper core and various high-strength kraft papers. It is an environmentally friendly and energy-saving material. The utility model has the advantages of low cost, low material consumption, sound absorption and heat insulation, high strength and good impact resistance.
1 Light weight, less material, and lower cost.
Compared with other various plate structures, the honeycomb sandwich structure has the largest strength-to-weight ratio, and thus the finished product has a good performance/price ratio, which is the key to the success of the honeycomb paperboard. The density of ordinary honeycomb paperboard is about 30~50kg/m, which is 1/3 of the density of general corrugated cardboard. The price of ordinary honeycomb paperboard is only 60% of wood, 50% of steel, and 66% of heavy-duty seven-layer corrugated cardboard. Because of its light weight, it can bring better economic benefits to users.
2 high strength, smooth surface, not easily deformed.
The honeycomb sandwich structure is approximately isotropic, has good structural stability, and is not easily deformed. Its outstanding compressive strength and bending resistance are important characteristics required for box-type packaging materials. Ordinary honeycomb cardboard can bear 2-5kg of pressure per square centimeter, which is 5-10 times the compressive capacity of ordinary corrugated board. The bending strength of ordinary honeycomb paperboard is 2 to 5 times that of reinforced corrugated paperboard, which is 5 to 30 times that of ordinary corrugated paperboard.
3 shock resistance, good cushioning.
Honeycomb paperboard is made of flexible paper core and face paper. It has good toughness and resilience. The unique honeycomb sandwich structure provides excellent cushioning performance. It has higher energy absorption per unit volume in all buffer materials. , High-thickness honeycomb paperboard can replace the now widely used EPS plastic foam cushion. According to studies, the compressive strength of honeycomb corrugated cardboard increases approximately linearly with the increase in the thickness and length of the cardboard. The compressive strength of AB楞 honeycomb corrugated cardboard can reach 8.5kgf/cm2, A楞 can reach 8.5kgf/cm2, and B楞 can reach 1 4kgf/cm2, which is much higher than the compressive strength of EPS foams. .
4 sound absorption, heat insulation.
The interior of the honeycomb sandwich structure is a closed chamber filled with air, so it has a good sound insulation performance.
5 No pollution, in line with modern environmental trends.
Honeycomb paperboard is made from recyclable paper, which can be replaced by wood, replace EPS plastic cushion liner, and can be recycled after use. Corrugated cartons in the production process of waste products and corners can also be die-cut after bonding, made of various shapes of cellular corrugated board cushioning liner, even if not abandoned, can also be natural degradation, absorption, is very good Green packaging materials.
Second, the application of honeycomb cardboard in packaging
Honeycomb paperboard products save resources and protect the ecological environment. The cost is low, the price is inexpensive, the use is wide, and the prospects are good. It conforms to the trend of application development of international packaging industry materials. As a new type of packaging material, honeycomb paperboard is widely used in the packaging of electronic and electrical appliances, and is particularly suitable for cushioning packaging of heavier home appliances, mechanical and electrical products, mechanical parts, and ceramic products. It can be specifically made into the form of honeycomb trays, packing boxes and packaging linings.
1 Honeycomb molded tray. Honeycomb molded tray uses honeycomb molded board as the top plate and bottom plate of the tray. The middle and four corner pads are made of round paper tube or small multi-layer honeycomb paperboard. After being dried and molded, a complete honeycomb paper base molding tray is made. . In order to achieve the required performance requirements for pallet use, the necessary chemical additives must be added.
(1) Add dry strength agents, such as modified starch, cationic polyacrylamide, polyvinyl acetate emulsion;
(2) adding a wet strength agent, such as polyamide-propylene oxide resin (PAE);
(3) Sizing agents, such as water-soluble acrylic polymers. This production process uses waste pulp and non-polluting additives to mix and mold in a certain proportion, the production process is simple, the production process does not discharge harmful substances, and the waste water is recycled, and almost no load is generated on the environment, and it meets the environmental protection requirements.
Compared with wooden pallets, honeycomb trays have better mildness and medium performance. Its compressive strength under flat pressure can reach over 20t, and its bending strength can reach 1t, which can play a very good protective role for products.
2 Honeycomb packing box. Honeycomb packing box is a high-strength sheet made of high-strength honeycomb paperboard with a frame and a variety of hard sheet or high-strength waterproof kraft paperboard. It is a new type of energy-saving packaging box with paper and wood. The hard and soft inner composite box boards outside the packing box are pierced externally and protected against buffers. The packaging and protection are unified, the surface is smooth, there is no patchwork, the box body is tightly fitted, the appearance is beautiful, and the printing is convenient. 13 Packaging requirements for products that reduce barriers to inspection of exported goods are a good alternative to wooden packaging.
3 Honeycomb packaging lining. According to the shape of the package, a variety of processing can be carried out using the honeycomb paperboard to make a variety of package linings. Compared with traditional polystyrene foam (EPS), honeycomb packaging lining has higher strength and good cushioning; processing does not require mold forming, is not subject to batch restrictions, but also can reduce the size of packaging containers, reduce packaging materials, Reduce transportation costs; and the material can be recycled and recycled, avoid white pollution, and achieve optimal protection and rational use of resources.
Source: Shanghai Packaging
