Current situation and direction of the hottest woo

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The current situation and direction of wood packaging materials (Part 2)

second generation wood packaging

1. High strength multi-layer corrugated board

seven layer corrugated board (made of three layers of corrugated core paper and four layers of thin board alternately bonded) packaging containers made of high strength, suitable for packaging heavy mechanical and electrical products. For example, compared with wood packaging, the heavy-duty cartons made of 3A corrugated board are characterized by large capacity and small volume; Light weight (the box weight is only 25% - 30% of the weight of the wooden box with the same volume) and high strength; Good water resistance, strong sealing and good cushioning effect; It saves storage space, is suitable for folding and stacking, and is convenient for handling. Cartons and pallets made of 3A corrugated cardboard have been widely used, especially for the transportation and packaging of heavy products such as machinery, electromechanical products, etc. In addition, in order to be compatible, the packaging containers made of X-PLY super strong corrugated cardboard (made of three layers of corrugated core paper and four layers of thin cardboard alternately bonded, and the three layers of corrugated core paper are perpendicular to each other) and 3b corrugated cardboard have higher strength and bright development prospects

2. Bamboo plywood box

bamboo plywood made of bamboo is a relatively good packaging material developed in recent years. Sometimes in order to reduce weight, non-ferrous metals such as aluminum alloy and special metals are also used to replace wood with bamboo. Bamboo plywood has good physical and chemical properties. It can be made into various packaging boxes for mechanical and electrical products. It can replace a lot of wood, save money, and the cost is about half lower than wood packaging. In addition to bamboo plywood instead of wood, bamboo can also be woven into bamboo baskets for packaging fruit and vegetable products and general small mechanical and electrical products. The annual output of bamboo in China is huge (more than 2billion pieces per year), which can automatically control the experimental process. Therefore, we should vigorously develop bamboo packaging to replace wood packaging

3. Honeycomb paperboard

the packaging box or tray made of honeycomb paperboard has high strength, light weight, stable structure, wide applications, and meets the requirements of environmental protection. Using it instead of wood packaging can save wood and cost. For example, the cost of making honeycomb paperboard is only 6.48 yuan per square meter, and the cost of making a full paper pallet is nearly 20 yuan (the market price is about 38 yuan), which is much lower than the price of 100 yuan per wooden pallet. Therefore, vigorously promoting and using honeycomb paperboard instead of wood packaging materials is also a key point of improving product packaging in China, such as whether the pressing force of steel balls is less than 10kg

4. Plywood

taking advantage of the high strength of wood along the grain direction, glue two adjacent sheets in mutually perpendicular grain directions to make the strength of plywood similar in all directions. The number of layers of plywood is odd. Only in this way can the structure of plywood be balanced. The packaging container made of plywood is light, solid, not easy to deform and crack, and has good corrosion and moisture resistance. Using it instead of some wood packaging can save a lot of wood

5. Fiberboard

fiberboard is a man-made board made of various wood fibers and plant fibers such as cotton stalks, straw and reeds. It does not need logs, and all the leftovers and shavings of wood can be used. The performance of fiberboard is similar to that of plywood. It has the advantages of wide surface, uniform structure, no natural defects of wood, wear resistance, corrosion resistance, not easy to swell, shrink and crack, and insulation performance; After oil immersion or special processing, it can also resist water, fire and acid. After being made into packaging containers, fiberboard can replace some wood packaging to save wood

6. Magnesite concrete

magnesite concrete is also a good substitute for wood packaging material, which is made of magnesite, halogen block, reinforcement, filler and other raw materials. As a substitute for wood packaging material, its characteristics are: simple manufacturing process; Excellent physical properties, strength index close to wood; The quality is stable, avoiding the defects of natural wood, such as perishable, easy to be eaten by insects, inflammable, cracks and so on; The average price of raw materials is lower than that of wood. However, its specific gravity is generally kg/m2, which is slightly heavier than wood, increasing the transportation load. Because magnesite concrete has many advantages and similar properties to wood, it is increasingly used in the packaging of various mechanical and electrical products in China to replace wood packaging

7. Composite materials

are compounded with various organic and inorganic substances to make artificial composite wood to replace natural wood. This material is characterized by a large number of inorganic fibers such as glass fiber, mineral wool fiber, inorganic filler and some synthetic resins as adhesives. The strength of inorganic fiber is high, so the strength of artificial wood made of composite can approximate or exceed that of natural wood. Because this kind of production process is complex and the process technology is not mature enough, the cost is high, and there are not many officially put into production. All countries are conducting research to improve the production process and production technology. It will be a promising substitute material for wood

to sum up, in order to increase the export of large-scale products such as mechanical and electrical products in China and protect China's forest resources and ecological environment, we must consider saving wood as much as possible and using less or no wood packaging when designing the outer packaging of products. Therefore, the reasonable use of wood modification technology and vigorously develop wood packaging will become the development direction of wood packaging in the future

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